Results Frm EPAs Drinking Water Radiochemistry Performance Evaluation Studies For Calendar Year 1998


United States
Environmental Protection
Agency
Office of Research and
Development
Washington, DC 20460
EPA/600/R-99/076
August 1999
oEPA
Results from EPA's Drinking
Water Radiochemistry
Performance Evaluation
Studies for Calendar Year 1998
090ECB99 cov-0

-------
TECHNICAL REPORT DATA
1. Report No. ^
EPA/600/R-99&?f
2.
3. Recipient's Accession No.
4. Title and Subtitle
Results from EPA's Drinking Water Radiochemistry Performance Evaluation Studies for
Calendar Year 1998
5. Report Date
01/01/98-12/31/98
6. Performing Organization Code
7. Authors)
Pia, S. H.
8. Performing Organization Report
No. (TIP#)
NERL-LV 99-103
9. Performing Organization Name & Address
U.S. EPA, Office of Research & Development, National Exposure Research Laboratory
Environmental Sciences Division, Environmental Chemistry Branch
944 E. Harmon Ave.
Las Vegas, NV 89119
10. Program Element Number
11. Contract/Grant No.
12. Sponsoring Agency Name & Address
U.S. EPA, Office of Research & Development, National Exposure Research Laboratory
Environmental Sciences Division, Environmental Chemistry Branch
944 E. Harmon Ave.
Las Vegas, NV 89119
13. Type of Report & Period Covered
Radiation QA, CY 1998
14. Sponsoring Agency Code
EPA 600/07
15. Supplemental Notes or Complete Citation!
Pia, S.H. Results from EPA's Radiation Performance Evaluation (Drinking Water/QA) Studies for Calendar
Year 1993, Las Vegas, NV:U.S. Environmental Protection Agency, 1993 (Rereleased 1999)
16. Abstract
Notice of termination of EPA's radiochemistry performance evaluation program was announced in the Federal
Register on June 12, 1997 (62:113). Therefore, as of March 1999, all technical assistance available from the
radiochemistry component at the EPA in Las Vegas, NV, is terminated.
The following report contains in chronological order the results for radiochemistry studies for the period indicated.
The results are organized by radiochemistry study title and date and under each title a summary report. The
summary report contains the laboratory code for each participant, the triplicate results submitted by each participant,
the average of the submitted results, and summary statistics. Introducing each report is a discussion of the statistics
and the scoring criterion.
We are providing this report to assist organizations interested in an historical account of radiochemistry Performance
Evaluation Studies. Mention of trade names, corporate names or commercial products does not constitute
endorsement or recommendation by EPA.
17. Key Words and Document Analysis
a. Descriptors:
PE Studies, PE, radiochemistry, gross alpha, gross
beta, strontium, tritium, plutonium, uranium, radium,
gamma, mixed gamma, blind, iodine, air filter,
radioactivity
b Identifiers/Open-ended Terms
c COSATI
18. Distribution Statement
RELEASE TO THE PUBLIC
19 Security Class (This Report)
UNCLASSIFIED
21. No of Pages
454
20. Secunty Class (This Page)
UNCLASSIFIED
22 Price
EPA 2220-1

-------
AUG-06-1999 14:41
USEPfi
ORD CLEARANCE FORM
513 569 7566 P.06/06
4. Copyright PeftainMn
D Yes lAttached)
X Not Applicable
1. EPA Report No.
2, Product Code
B
3. lata/ Draft Mo.
NSflL-LV 89-103
S.TWe
Rasohe from CPA'S Drinking Watar totfoehamiftfV Performance Evaluation Sw*ea for Calender Vaar 1896
0, Authors) in order of authorship, AfWiat>on, and Address (identify EPA authors with Lab/Center)
PSe, S. H.
U.S. EPA
National Exposure Rasearcn Laboratory
Environments! Sciences Division, environmental Cnsmlwrv Branch
PO Sex 93«7fl
LM Vegas, NV Ml93-3476
7. Internet Address (indicate whether it is your preferred or active URL). Attaoh diskette containing the abstract in WordPerfect.
N/A
B. 4M& task No., GPftAID Ieg, QBO101). APO.endAPM
Project 9 J 0477
9. Project Officer Mama, Telephone No. end Corttrect/IAQ, CAQ #
S. Pia. 702/788*2102
10. Cantreet/IACfAaaiitano* Agreemsm No.
N/A
M. Product Tvd6
12. BibHoaraohie Qtatiiin (Foravmnosta Miiensnd ah»lrart» Btim .
~	Mar Reviewed Journal Article ISee Mock 121
X fluWehed Report
~	Summary
~	Symposium Paper (See Mock 12)
~	took Chapter (See Mock 12)
~	Exhibit/Post si
~	EPA-Sporoored Confateiraa/Seminar/Wegtohep
~	Research Br la' or Issue Paper
D Newsletter
0 Internal dapon (distribution limited u EPA)
O Unpublished Report
~	Computer Product, Scientific Data
~	Other 	 			.
(Menwy product type, Use block T2 ff needrtj
14.
SiQnmm/tHuo
name, place and date. For refereed publications, gfva name wtiana
manusojpt Is being submitted, accepted or puMshad.)
Submitted.
Accepted.
. Published.
13. Technical Information ManegaT
»

Signature
tit
Pta, Originator

Christian. G. Daughton. Supervisor
Date
15. ctffifflMd «r Kiyvwdi
17. Thia product <
14e. Product's Peer Review Category
(Refveacl papers are usually Category 9; abstracts, ttA reports
and norweferoed products era usually Category 4.)
C 1. Major soi. & tech. work product (AA signs In 181
~ 2. important sci- & tech. work product (LD eigne to 18)
O 3. General tci. & tech, work product 
-------
United States	Office of Research and	EPA/600/R-98/060
Environmental Protection Development	May 1998
Agency	Washington, DC 20460
<&EPA Strontium in Water
Performance Evaluation
Study
A Statistical Evaluation
of the January 16,1998 Data
006ECB98COV-060
-------
Strontium in Water
Performance Evaluation Study
January 16, 1998
Environmental Protection Agency
National Exposure Research Laboratory
Environmental Sciences Division
Las Vegas, Nevada
-------

UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
OFFICE OF RESEARCH AND DEVELOPMENT
NATIONAL EXPOSURE RESEARCH LABORATORY
ENVIRONMENTAL SCIENCES DIVISION-LAS VEGAS
P.O. BOX 93478
LAS VEGAS, NEVADA 89193-3478
(702/798-2100)
Dear Participant,
Enclosed are the results of the Environmental Sciences Division (ESD-LV)
Performance Evaluation Study for Strontium in Water; January 16, 1998.
The known value for each analysis was determined by gravimetric methods,
checked by chemical analyses performed by ESD-LV's Radiochemistry Laboratory,
and compared to the participating laboratories' grand average.
The expected precision, determined by the known value, was taken from
"Table 3. Laboratory Precision: One Standard Deviation Values and Control Limits
for Various Analyses", which is based on data accumulated over the years by the
Performance Evaluation Program, and can be found in the Environmental Radioactivity
Performance Evaluation Studies Program and Radioactive Standards Distribution
Program information brochure.
Please take a few minutes to review this report and the analytical data your
laboratory submitted to us. If there are any apparent discrepancies, please notify us
immediately.
We encourage you to make use of the computer-automated data-entry system
that has been in place for some time now. As the number of participants increases,
and it becomes unrealistic for us to receive results by mail or FAX, the computer
system will be our only avenue for accepting data.
If you have any questions or comments, please send a message via the data-entry
system or contact Stephen Pia at 702/798-2102 or Patricia Honsa at 702/798-2141.
Stephen Pia
Team Leader
RADQA Program
Enclosure
-------
NOTICE
This material has been funded wholly by
the U.S. Environmental Protection Agency.
It has been subjected to the Agency's review,
and has been approved for publication as
an EPA document.
-------
ESD-LV Performance Evaluation: Strontium in Water, 16-Jan-1998	1/12
The following pages consist of separate sections for each of the nuclides in this study with four
parts per section. After the first, each part is separated from the next by a new page or a thick
horizontal bar. The first page of each section is a statistical summary for the nuclide and starts
with a statement of the known value, the control limits, and the warning limits.
The warning limits are placed at two normalized standard deviations above and below the
known value and the control limits are three normalized standard deviations above and below
the known value. If you keep control charts, these values will be useful for anticipating problems
with the accuracy of your analytical methods.
The coin shaped pie chart at the top of the summary page shows the fate of all the samples
sent out in number and percentage terms. The pie chart starts at the top and rotates clockwise.
The first sector represents those participants who submitted analytical results within both the
warning and control limits. The next sector represents those who are in the warning region but
not out of control. The third sector represents those who are out of control, but have passed
the outlier test. The fourth sector represents those who have failed the outlier test. The last
sector represents those participants who have failed to respond properly. This is the case if no
analytical results were returned, or less than three determinations were reported, or if the results
were received too late. The reeding on the edge of the coin is spaced at one percent intervals, and
the sector shading becomes darker as the data reliability decreases. Sectors with zero width are
not shown.
The table in the center shows a number of statistical quantities calculated from the submitted
data based on the mean and median values in relation to the known value, both before and after
outlier removal. The lower pie chart uses the same construction as the upper chart and shows
the distribution of properly submitted data in terms of deviation from the known value divided
into sectors representing one, two, three, and greater than three normalized standard deviations.
The second part is an alphabetical listing, in lab-code order, of submitted data and several
calculated quantities. An entry that is shaded has been rejected because of one of the reasons
listed above or failure of the outlier test. The fifth and sixth columns are a measure of laboratory
precision. The Range analysis is a normalized value that you may use to keep precision control
charts. The eighth and ninth columns are the differences from the mean of all non-outliers and
from the known value, respectively. If this value is between 2.0 and 3.0, your analytical process
precision is in the warning zone; if it exceeds 3.0 it is out of control. A tag symbol may appear in
the last column. Each page with tags has a symbol definition summary at the bottom. If there is
no tag symbol, the data is within the control limits, but it may be in the warning zone.
The third part is a three-column listing of result average, tag symbol, and lab-code in average
order excluding those labs not responding properly. In this order, all outliers and out-of-control
results appear at the top or bottom of the list.
The last part is two bar chart displays showing frequency distributions of responding
participants. The first chart places the known value at the center and a bar at each 0.2 unit of
expected precision. The second chart places the mean of the reported measurements at the center
and a bar at each 0.2 unit of standard deviation. In both cases, a bar includes those results within
0.1 unit up to the maximum of six. Any results more than six units from the center value are
shown cumulatively by a shaded bar one past the sixth unit. If the central tendency of the known
value distribution falls away from the center, an error in accuracy is indicated. If the distribution
is broad, poor precision is indicated. The mean value distribution is similar but uses the average
and standard deviation of reported results as its basis.
-------
2/12	ESD-LV Performance Evaluation: Strontium in Water, 16-Jan-1998
The Range Analysis(R + SR) is calculated from the range, mean range and standard error of
the range vnlues. The range is the difference between the maximum and minimum results for the
laboratory. The mean range is calculated by multiplying the expected precision by 1.693(for three
results). The standard error of the range is calculated by multiplying the mean range by 2.575(for
three results), subtracting the mean range from this product, and dividing the result by 3. If the
range is greater than the mean range, then the range analysis is calculated by subtracting the
mean range from the range, dividing the result by the standard error of the range and adding 1.
If the mean range is greater than or equal to the range, then the range analysis is calculated by
dividing the range by the mean range.
The normalized deviation of the mean from the grand average is calculated from the deviation
of the mean from the grand average and the standard error of the mean values. The deviation of
the mean from the grand average is calculated by subtracting the grand average from the
average of the laboratory's three results. The standard error of the mean is calculated by
dividing the expected precision by the square root of 3(the number of results). The normalized
deviation of the mean from the grand average is calculated by dividing the deviation of the mean
from the grand average by the standard error of the mean.
The normalized deviation of the mean from the known value is calculated from the deviation of
the mean from the known value and the standard error of the mean values. The deviation of the
mean from the known value is calculated by subtracting the known value from the average of the
laboratory's three results. The standard error of the mean is calculated by dividing the expected
precision by the square root of 3(the number of results). The normalized deviation of the mean
from the known value is calculated by dividing the deviation of the mean from the known value by
the standard error of the mean.
A complete explanation of the statistical calculations involved in the report may be found in
the Environmental Radioactivity Performance Evaluation Studies Program information brochure
IDraft Revision of EPA-600/4-81-004J, available from Patricia Honsa, ESD-LV, 702/798-2141.
-------
ESD-LV Performance Evaluation: Strontium in Water, 16-Jan-1998	3/12
Strontium-89	Statistical Summary	104 Participants
The known value of this nuclide is 8.0 pCi/I with an expected, precision of 5.0; the control limits
are 0.0 to 16.7; the warning regions are 0.0 to 2.2 and 13.8 to 16.7
Statistic		 Respondents	Non-outliers
Mean
9.33
Grand Avg 9.33
Std. Dev.
4,70
4.70
Variance
22.13
22.13
% Coef. of Var.
50.41
50.41
% deviation of mean from known value
16.67
16.67
Norm. dev. of mean from known value
0.28
0.28
Median
8.33
8.33
% deviation of median from known value
4.17
4.17
Norm. dev. of median from known value
0.07
0.07
-------
(?
4/12 ESD-LV Performance Evaluation: Strontium in Water,
16-Jan-1998


Strontium-89








Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation

Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
A
9.0
9.0
9.0
0.00
0.000
9.00
-0.12
0.35

AE
9.0
11.0
11.0
1.15
0.236
10.33
0.35
0.81

AF
11.0
10.0
12.0
1.00
0.236
11.00
0.58
1.04

AJ
15.0
12.0
15.0
1.73
0.354
14.00
1.62
2.08

AK
5.0
6.0
5.0
0.58
0.118
5.33
-1.39
-0.92

AL
10.0
12.0
12.0
1.15
0.236
11.33
0.69
1.15

AU
20.0
24.0
24.0
2.31
0.473
22.67
4.62
5.08
It
AW
7.0
8.0
9.0
1.00
0.236
8.00
-0.46
0.00

AY








•
AZ
13.0
14.0
16.0
1.53
0.354
14.33
1.73
2.19

BA
17.0
15.0
16.0
1.00
0.236
16.00
2.31
2.77

BB








•
BC
6.0
7.0
7.0
0.58
0.118
6.67
-0.92
-0.46

BG








•
BH
11.0
7.0
10.0
2.08
0.473
9.33
0.00
0.46

BL
8.0
13.0
9.0
2.65
0.591
10.00
0.23
0.69

BM
11.0
12.0
10.0
1.00
0.236
11.00
0.58
1.04

BO
13.0
10.0
12.0
1.53
0.354
11.67
0.81
1.27

C
6.0
7.0
6.0
0.58
0.118
6.33
-1.04
-0.58

CA
6.0
5.0
7.0
1.00
0.236
6.00
-1.15
-0.69

CC








•
CE








•
CJ
6.0
3.0
6.0
1.73
0.354
5.00
-1.50
-1.04

CO








•
CP








•
cs
9.0
8.0
6.0
1.53
0.354
7.67
-0.58
-0.12

cx
16.0
29.0
10.0
9.71
3.371
18.33
3.12
3.58
ft
D
15.0
12.0
16.0
2.08
0.473
14.33
1.73
2.19

DD
3.0
3.0
3.0
0.00
0.000
3.00
-2.19
-1.73

DE
8.0
8.0
9.0
0.58
0.118
8.33
-0.35
0.12

DO
8.0
9.0
15.0
3.79
0.827
10.67
0.46
0.92

DT
8.0
8.0
7.0
0.58
0.118
7.67
-0.58
-0.12

DZ








•
E
4.0
6.0
4.0
1.15
0.236
4.67
-1.62
-1.15

EB
6.0
4.0
7.0
1.53
0.354
5.67
-1.27
-0.81

EL
0.0
0.0
0.0
0.00
0.000
0.00
-3.23
-2.77

FE
9.0
9.0
8.0
0.58
0.118
8.67
-0.23
0.23

GQ
16.0
16.0
15.0
0.58
0.118
15.67
2.19
2.66

HK
9.0
9.0
8.0
0.58
0.118
8.67
-0.23
0.23

HP
5.0
4.0
2.0
1.53
0.354
3.67
-1.96
-1.50

I
21.0
22.0
18.0
2.08
0.473
20.33
3.81
4.27
IT
J








•
JE
9.0
7.0
8.0
1.00
0.236
8.00
-0.46
0.00

JS
5.0
5.0
6.0
0.58
0.118
5.33
-1.39
-0.92

JY
7.0
7.0
12.0
2.89
0.591
8.67
-0.23
0.23

• =
No data submitted

TAG SYMBOLS

1T = Above control limit
1 0 S
V-	
Insufficient data
X HE
Determined to be an outlier
¦11 = Below control limit
-------
	








	^

ESD-LV Performance Evaluation: Strontium in Water, 16-Jan-1998
5/12
Strontium-89








Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation

Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
K
4.0
5.0
11.0
3.79
0.827
6.67
-0.92
-0.46

KH
8.0
5.0
6.0
1.53
0.354
6.33
-1.04
-0.58

KL
7.0
4.0
4.0
1.73
0.354
5.00
-1.50
-1.04

L
13.0
110
9.0
2.00
0.473
1100
0.58
1.04

LE








•
LF
9.0
8.0
8.0
0.58
0.118
8.33
-0.35
0.12

LT
15.0
15.0
17.0
1.15
0.236
15.67
2.19
2.66

M
8.0
8.0
9.0
0.58
0.118
8.33
-0.35
0.12

N
7.0
8.0
9.0
1.00
0.236
8.00
-0.46
0.00

NJ
8.0
11.0
10.0
1.53
0.354
9.67
0.12
„ 0 58

NO








•
OA
11.0
11.0
14.0
1.73
0.354
12.00
0.92
1.39

PB

•






•
Q
9.0
10.0
11.0
1.00
0.236
10.00
0.23
0.69

QM
8.0
11.0
13.0
2.52
0.591
10.67
0.46
0.92

QU
7.0
8.0
7.0
0.58
0.118
7.33
-0.69
-0.23

QW
7.0
8.0
8.0
0.58
0.118
7.67
-0.58
-0.12

QZ
15.0
10.0
16.0
3.21
0.709
13.67
1.50
1.96

R
6.0
6.0
6.0
0.00
0.000
6.00
-1.15
-0.69

RK








1
~ j
RR
9.0
9.0
10.0
0.58
0.118
9.33
0.00
0.46

S
6.0
6.0
7.0
0.58
0.118
6.33
-1.04
-0.58

sc








•
SD
14.0
15.0
16.0
1.00
0.236
15.00
1.96
2.42

SF








•
SI
6.0
3.0
3.0
1.73
0.354
4.00
-1.85
-1.39

SL








•
SM
8.0
7.0
4.0
2.08
0.473
6.33
-1.04
-0.58

SS
0.0
0.0
0.0
0.00
0.000
0.00
-3.23
-2.77

sz








•
T
6.0
8.0
7.0
1.00
0.236
7.00
-0.81
-0.35

TD
10.0
5.0
8.0
2.52
0.591
7.67
-0.58
"012

TF








•
TL






^ ..

~
TQ
1.0
1.0
2.0
0.58
0.118
1.33
-2.77
-2.31

U








•
UM
-








UP
6.0
10.0
7.0
2.08
0.473
7.67
-0.58
-0.12

VA








•
VC








, •
VH








•
VI

/ ' "






, •
W
11.0
6.0
10.0
2.65
0.591
9.00
-0.12
0.35

WG








•
WI








•
« =
No data submitted

TAG SYMBOLS

ft = Above control limit
0 s
V	
Insufficient data
x =
Determined to be an outlier
= Below controllimit
-------
6/12	ESD-LV Performance Evaluation: Strontium in Water, 16-Jan-1998
Stronti um-89
,	_	Exper. Rng anal	Normalized deviation
	Res. *•	Res. ^	Res. 3	Sigma (R + SR) Average (grand-avg) (known) Tag
WJ	~	—	~
WO
WR
WS	.
WV
X
XI
XK
XL
XM
XO
XQ
XR
Y
23.0
7.0
10.0
22.0
7.0
12.0
21.0
7.0
9.0
1.00 0.236
0.00
1.53
0.000
0.354
22.00
7.00
10.33
4.39
-0.81
0.35
4.85 ft
-0.35
0.81
22.0
21.0
13.0
4.93
1.120
18.67
3.23
3.70
ft
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
0.00

SS
7.33

QU
10.33

XM
0.00

EL
7.67

UP
10.33

AE
1.33

TQ
7.67

TD
10.67

QM
3.00

DD
7.67

QW
10.67

DO
3.67

HP
7.67

DT
11.00

L
4.00

SI
7.67

CS
11.00

BM
4.67

E
8.00

N
11.00

AF
5.00

KL
8.00

JE
11.33

AL
5.00

CJ
8.00

AW
11.67

BO
5.33

JS
8.33

M
12.00

OA
5.33

AK
8.33

LF
13.67

QZ
5.67

EB
8.33

DE
14.00

AJ
6.00

R
8.67

JY
14.33

D
6.00

CA
8.67

HK
14.33

AZ
6.33

SM
8.67

FE
15.00

SD
6.33

S
9.00

W
15.67

LT
6.33

KH
9.00

A
15.67

GQ
6.33

C
9.33

RR
16.00

BA
6.67

K
9.33

BH
18.33
IT
CX
6.67

BC
9.67

NJ
18.67
IT
Y
7.00

XL
10.00

Q
20.33
ft
I
7.00

T
10.00

BL
22.00
22.67
ft
ft
X
AU
• s No data submitted
0 s Insufficient data
TAG SYMBOLS
x = Determined to be an outlier
11 s Above control limit
U = Below control limit
-------
ESD-LV Performance Evaluation: Strontium in Water, 16-Jan-1998
7/12
Strontium-89
% responding labs	Frequency distribution
10-
—	i ¦	* , ¦ -j		
-6	-4	-2	0	+2	+4	+6
Normalized deviation of the mean from the known value
% responding labs	Frequency distribution
10-

—U^Ib—,1—¦, ¦¦
-2	0	+2	+4
-6	-4	-2	6	+2	+4	+6
Normalized deviation of the mean from the grand average
-------
ESD-LV Performance Evaluation: Strontium in Water, 16-Jan-1998
8/12
Strontium-90	Statistical Summary	104 Participants
The known value of this nuclide is 32.0 pCi/1 with an expected precision of 5.0; the control limita
are 23.3 to 40.7; the warning regions are 23.3 to 26.2 and 37.8 to 40.7
31 (29.8 %) Failed to respond
62(59.6 %) Within all limits
1(1.0 %) Outliers »** /\K


4(3.8 %} Out of control '

*--•6(5.8 %) In warning zone
but not an outlier
i
T 1
but wilhin control
Statistic
Respondents
Non-outliers
Mean
29.69
Grand Avg 29.51
Std. Dev.
3.70
3.39
Variance
13.71
11.50
% Coef. of Var.
12.47
11.49
% deviation of mean from known value
-7.22
-7.78
Norm. dev. of mean from known value
-0.62
-0.73
Median
30.00
29.83
% deviation of median from known value
-6.25
-6.77
Norm. dev. of median from known value
-0.54
-0.64
5(6.8 %) Mora than 3 norm. S.D.
6(8.2 %) Between 2 and 3 norm. S.D
6(49.3 %) Within 1 norm. S.D.
of known value
26(35.6 %) Between 1 and 2 norm. S.D.
-------
	








	^
9/12 ESD-LV Performance Evaluation: Strontium in Water, 16-Jan-1998
\


Strontium-90








Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation

Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
A
31.0
31.0
30.0
0.58
0.118
30.67
0.40
-0.46

AE
29.0
27.0
28.0
1.00
0.236
28.00
-0.52
-1.39

AF
32.0
32.0
28.0
2.31
0.473
30.67
0.40
-0.46

AJ
29.0
29.0
27.0
1.15
0.236
28.33
-0.41
-1.27

AK
30.0
30.0
30.0
0.00
0.000
30.00
0.17
-0.69

AL
28.0
30.0
28.0
1.15
0.236
28.67
-0.29
-1.15

AU
27.0
24.0
25.0
1.53
0.354
25.33
-1.45
-2.31

AW
30.0
30.0
30.0
0.00
0.000
30.00
0.17
-0.69

AY

v






•
AZ
30.0
30.0
30.0
0.00
0.000
30.00
0.17
-0.69

BA
26.0
24.0
24.0
1.15
0.236
24.67
-1.68
-2.54

BB
28.0
24.0
25.0
2.08
0.473
25.67
-1.33
-2.19

BC
29.0
29.0
29.0
0.00
0.000
29.00
-0.18
-1.04

BG








•
BH
33.0
30.0
31.0
1.53
0.354
31.33
0.63
-0.23

BL
32.0
29.0
29.0
1.73
0.354
30.00
0.17
-0.69

BM
29.0
28.0
30.0
1.00
0.236
29.00
-0.18
-1.04

BO
27.0
29.0
27.0
1.15
0.236
27.67
-0.64
-1.50

C
31.0
34.0
33.0
1.53
0.354
32.67
1.09
0.23

CA
26.0
280
28.0
1.15
0.236
27.33
-0.75
-1.62

CC








•
CE
31.0
31.0
29.0
1.15
0.236
30.33
0.29
-0.58

CJ
32.0
32.0
31.0
0.58
0.118
31.67
0.75
-0.12

CO
29.0
27.0
29.0
1.15
0.236
28.33
-0.41
-1.27

CP








•
CS
30.0
33.0
34.0
2.08
0.473
32.33
0.98
0.12

CX
22.0
20.0
25.0
2.52
0.591
22.33
-2.49
-3.35

D
30.0
33.0
30.0
1.73
0.354
31.00
0.52
-0.35

DD
33.0
36.0
31.0
2.52
0.591
33.33
1.32
0.46

DE
32.0
33.0
33.0
0.58
0.118
32.67
1.09
0.23

DO
30.0
29.0
26.0
2.08
0.473
28.33
-0.41
-1.27

DT
30.0
30.0
30.0
0.00
0.000
30.00
0.17
-0.69

DZ
38.0
39.0
38.0
0.58
0.118
38.33
3.06
2.19

E
32.0
32.0
33.0
0.58
0.118
32.33
0.98
0.12

EB
27.0
28.0
27.0
0.58
0.118
27.33
-0.75
-1.62

EL
28.0
29.0
28.0
0.58
0.118
28.33
-0.41
-1.27

FE
33.0
33.0
32.0
0.58
0.118
32.67
1.09
0.23

GQ
33.0
33.0
32.0
0.58
0.118
32.67
1.09
0.23

HK
32.0
30.0
31.0
1.00
0.236
31.00
0.52
-0.35

HP
31.0
35.0
34.0
2.08
0.473
33.33
1.32
0.46

I
T
28.0
260
28.0
1.15
0.236
27.33
-0.75
-1.62
A
O
JE
33.0
34.0
34.0
0.55
0.118
33.67
1.44
0.58

JS
30.0
32.0
30.0
1.15
0.236
30.67
0.40
-0.46

JY
30.0
29.0
24.0
3.21
0.709
27.67
-0.64
-1.50

• =
No data submitted

TAG SYMBOLS

It s Above control limit
H0 s
Insufficient data
x =
Determined to be an outlier
U s Below control limit
	¦>)
-------
r
ESD-LV Performance Evaluation: Strontium in Water, 16-Jan-1998
10/12
r
Stronti um-90







a
Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation

Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
K
31.0
29.0
28.0
1.53
0.354
29.33
-0.06
-0.92

KH
32.0
35.0
31.0
2.08
0.473
32.67
1.09
0.23

KL
33.0
36.0
36.0
1.73
0.354
35.00
1.90
1.04

L
290
30.0
31.0
1.00
0.236
30.00
0.17
-0.69

LE








«
LF
35.0
33.0
35.0
1.15
0.236
34.33
1.67
0.81

LT
24.0
26.0
24.0
1.15
0.236
24.67
-1.68
-2.54

M
28.0
28.0
29.0
0.58
0.118
28.33
-0.41
-1.27

N
34.0
34.0
33.0
0.58
0.118
33.67
1.44
0.58

NJ
29.0
27.0
28.0
1.00
0.236
28.00
-0.52
-1.39

NO








•
OA
28.0
26.0
26.0
1.15
0.236
26.67
-0.98
-1.85

PB








•
Q
30.0
34.0
35.0
2.65
0.591
33.00
1.21
0.35

QM
24.0
19.0
18.0
3.21
0.709
20.33
-3.18
-4.04
u
QU
20.0
21.0
22.0
1.00
0.236
21.00
-2.95
-3.81

QW
24.0
21.0
21.0
1.73
0.354
22.00
-2.60
-3.46
u
QZ
28.0
30.0
27.0
1.53
0.354
28.33
-0.41
-1.27

R
27.0
27.0
28.0
0.58
0.118
27.33
-0.75
-1.62

RK








•
RR
31.0
29.0
30.0
1.00
0.236
30.00
0.17
-0.69

S
31.0
31.0
31.0
0.00
0.000
31.00
0.52
-0.35

SC








•
SD
31.0
29.0
32.0
1.53
0.354
30.67
0.40
-0.46

SF








•
SI
29.0
29.0
27.0
1.15
0.236
28.33
-0.41
-1.27

SL








•
SM
25.0
31.0
29.0
3.06
0.709
28.33
-0.41
-1.27

SS
35.0
35.0
34.0
0.58
0.118
34.67
1.79
0.92

SZ
36.0
36.0
36.0
0.00
0.000
36.00
2.25
1.39

T
29.0
26.0
27.0
1.53
0.354
27.33
-0.75
-1.62

TD
27.0
28.0
28.0
0.58
0.118
27.67
-0.64
-1.50

TF






V -


TL

» -
' * " * ¦






TQ
270
27.0
28.0
0.58
0.118
27.33
-0.75
-1-62

U








~ ~
UM





;


m
UP
\ 43.0
42.0
43.0
0.58
0.118
42.67
, 4.56
^ 3.70

VA

' *"







VC








•
VH









VI






/

«
W
30.0
32.0
310
1.00
0.236
31.00
O;52
-0.35

WG
'V - "







*
WI








. i
• = No data submitted TAG SYMBOLS ft s Above control limit
0 = Insufficient data	x = Determined to be an outlier	11 = Below control limit
-------
11/12 ESD-LV Performance Evaluation: Strontium in Water, 16-Jan-1998
Strontium-90
Exper. Rng anal	Normalized deviation
Lab Res. 1	Res. 2	Res. 3	Sigma (R + SR) Average (grand-avg) (known) Tag
WJ
WO
WR 26.0
WS
WV
X	22.0
XI
XK
XL 29.0
XM 33.0
XO
XQ
XR
Y	32.0
28.0
24.0
29.0
32.0
28.0
28.0
26.0
31.0
32.0
29.0
1.15 0.236
2.00 0.473
1.15 0.236
0.58 0.118
2.08 0.473
27.33 -0.75
29.67
32.33
29.67
-1.62
24.00 -1.91 -2.77
0.05 -0.81
0.98 0.12
0.05 -0.81
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
20.33

QM
28.33

QZ
31.00

W
21.00
li
QU
28.33

M
31.00

S
22.00
a
QW
28.33

EL
31.00

HK
22.33
a
CX
28.33

DO
31.00

D
24.00

X
28.33

CO
31.33

BH
24.67

LT
28.33

AJ
31.67

CJ
24.67

BA
28.67

AL
32.33

XM
25.33

AU
29.00

BM
32.33

E
25.67

BB
29.00

BC
32.33

CS
26.67

OA
29.33

K
32.67

KH
27.33

WR
29.67

Y
32.67

GQ
27.33

TQ
29.67

XL
32.67

FE
27.33

T
30.00

RR
32.67

DE
27.33

R
30.00

L
32.67

C
27.33

I
30.00

DT
33.00

Q
27.33

EB
30.00

BL
33.33

HP
27.33

CA
30.00

AZ
33.33

DD
27.67

TD
30.00

AW
33.67

N
27.67

JY
30.00

AK
33.67

JE
27.67

BO
30.33

CE
34.33

LF
28.00

NJ
30.67

SD
34.67

SS
28.00

AE
30.67

JS
35.00

KL
28.33

SM
30.67

AF
36.00

SZ
28.33

SI
30.67

A
38.33
42.67
X
DZ
UP
• = No data submitted	TAG SYMBOLS	ft = Above control limit
0 = Insufficient data	x s Determined to be an outlier	II s Below control limit J
-------
N\
ESD-LV Performance Evaluation: Strontium in Water, 16-Jan-1998 12 /12
Strontium-90
% responding labs	Frequency distribution
10-
l, JJjJL lh.
-6	-4	-'2	0'	+2	+4	+6
Normalized deviation of the mean from the known value
% responding labs	Frequency distribution
10-
¦lllnfll-l
¦	.	| wif ¦¦ t 11	t	i — i	i
-6	-4	-2	0	+2	+4	+6
Normalized deviation of the mean from the grand average
-------
United States	Office of Research and	EPA/600/R-98/063
Environmental Protection Development	May 1998
Agency	Washington, DC 20460
vvEPA Gross Alpha-Beta in Water
Performance Evaluation
Study
A Statistical Evaluation
of the January 30,1998 Data
006ECB98CQV-063
-------
Gross Alpha-Beta in Water
Performance Evaluation Study
January 30, 1998
Environmental Protection Agency
National Exposure Research Laboratory
Environmental Sciences Division
Las Vegas, Nevada
-------
A
\0
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
OFFICE OF RESEARCH AND DEVELOPMENT
NATIONAL EXPOSURE RESEARCH LABORATORY
ENVIRONMENTAL SCIENCES DIVISION-LAS VEGAS
P.O. BOX 93478
LAS VEGAS, NEVADA 89193-3478
(702/798-2100)
Dear Participant,
Enclosed are the results of the Environmental Sciences Division (ESD-LV)
Performance Evaluation Study for Gross Alpha-Beta in Water; January 30, 1998.
The known value for each analysis was determined by gravimetric methods,
checked by chemical analyses performed by ESD-LV's Radiochemistry Laboratory,
and compared to the participating laboratories' grand average.
The expected precision, determined by the known value, was taken from
"Table 3. Laboratory Precision: One Standard Deviation Values and Control Limits
for Various Analyses", which is based on data accumulated over the years by the
Performance Evaluation Program, and can be found in the Environmental Radioactivity
Performance Evaluation Studies Program and Radioactive Standards Distribution
Program information brochure.
Please take a few minutes to review this report and the analytical data your
laboratory submitted to us. If there are any apparent discrepancies, please notify us
immediately.
We encourage you to make use of the computer-automated data-entry system
that has been in place for some time now. As the number of participants increases,
and it becomes unrealistic for us to receive results by mail or FAX, the computer
system will be our only avenue for accepting data.
If you have any questions or comments, please send a message via the data-entry
system or contact Stephen Pia at 702/798-2102 or Patricia Honsa at 702/798-2141.
Sincerely,
Stephen Pia
Team Leader
RADQA Program
Enclosure
-------
NOTICE
This material has been funded wholly by
the U.S. Environmental Protection Agency.
It has been subjected to the Agency's review,
and has been approved for publication as
an EPA document.
-------
	 ^
ESD-LV Performance Evaluation: Gross Alpha-Beta in Water, 30-Jan-1998 1/16
The following pages consist of separate sections for each of the nuclides in this study with four
parts per section. After the first, each part is separated from the next by a new page nr a thick
horizontal bar. The first page of each section is a statistical summary for the nuclide and starts
with a statement of the known value, the control limits, and the warning limits.
The warning limits are placed at two normalized standard deviations above and below the
known value and the control limits are three normalized standard deviations above and below
the known value. If you keep control charts, these values will be useful for anticipating problems
with the accuracy of your analytical methods.
The coin shaped pie chart at the top of the summary page shows the fate of all the samples
sent out in number and percentage terms. The pie chart starts at the top and rotates clockwise.
The first sector represents those participants who submitted analytical results within both the
warning and control limits. The next sector represents those who are in the warning region but
not out of control. The third sector represents those who are out of control, but have passed
the outlier test. The fourth sector represents those who have failed the outlier test. The last
sector represents those participants who have failed to respond properly. This is the case if no
analytical results were returned, or less than three determinations were reported, or if the results
were received too late. The reeding on the edge of the coin is spaced at one percent intervals, and
the sector shading becomes darker as the data reliability decreases. Sectors with zero width are
not shown.
The table in the center shows a number of statistical quantities calculated from the submitted
data based on the mean and median values in relation to the known value, both before and after
outlier removal. The lower pie chart uses the same construction as the upper chart and shows
the distribution of properly submitted data in terms of deviation from the known value divided
into sectors representing one, two, three, and greater than three normalized standard deviations.
The second part is an alphabetical listing, in lab-code order, of submitted data and several
calculated quantities. An entry that is shaded has been rejected because of one of the reasons
listed above or failure of the outlier test. The fifth and sixth columns are a measure of laboratory
precision. The Range analysis is a normalized value that you may use to keep precision control
charts. The eighth and ninth columns are the differences from the mean of all non-outliers and
from the known value, respectively. If this value is between 2.0 and 3.0, your analytical process
precision is in the warning zone; if it exceeds 3.0 it is out of control. A tag symbol may appear in
the last column. Each page with tags has a symbol definition summary at the bottom. If there is
no tag symbol, the data is within the control limits, but it may be in the warning zone.
The third part is a three-column listing of result average, tag symbol, and lab-code in average
order excluding those labs not responding properly. In this order, all outliers and out-of-control
results appear at the top or bottom of the list.
The last part is two bar chart displays showing frequency distributions of responding
participants. The first chart places the known value at the center and a bar at each 0.2 unit of
expected precision. The second chart places the mean of the reported measurements at the center
and a bar at each 0.2 unit of standard deviation. In both cases, a bar includes those results within
0.1 unit up to the maximum of six. Any results more than six units from the center value are
shown cumulatively by a shaded bar one past the sixth unit. If the central tendency of the known
value distribution falls away from the center, an error in accuracy is indicated. If the distribution
is broad, poor precision is indicated. The mean value distribution is similar but uses the average
and standard deviation of reported results as its basis.
-------
2/16 ESD-LV Performance Evaluation: Gross Alpha-Beta in Water, 30-Jan-199g
The Range Analysis(R + SR) is calculated from the range, mean range and standard error of
thp range values. The range is the difference between the maximum and minimum results for t,he
laboratory. The mean range is calculated by multiplying the expected precision by 1.693(for three
results). The standard error of the range is calculated by multiplying the mean range by 2.575(for
three results), subtracting the mean range from this product, and dividing the result by 3. If the
range is greater than the mean range, then the range analysis is calculated by subtracting the
mean range from the range, dividing the result by the standard error of the range and adding 1.
If the mean range is greater than or equal to the range, then the range analysis is calculated by
dividing the range by the mean range.
The normalized deviation of the mean from the grand average is calculated from the deviation
of the mean from the grand average and the standard error of the mean values. The deviation of
the mean from the grand average is calculated by subtracting the grand average from the
average of the laboratory's three results. The standard error of the mean is calculated by
dividing the expected precision by the square root of 3(the number of results). The normalized
deviation of the mean from the grand average is calculated by dividing the deviation of the mean
from the grand average by the standard error of the mean.
The normalized deviation of the mean from the known value is calculated from the deviation of
the mean from the known value and the standard error of the mean values. The deviation of the
mean from the known value is calculated by subtracting the known value from the average of the
laboratory's three results. The standard error of the mean is calculated by dividing the expected
precision by the square root of 3(the number of results). The normalized deviation of the mean
from the known value is calculated by dividing the deviation of the mean from the known value by
the standard error of the mean.
A complete explanation of the statistical calculations involved in the report may be found in
the Environmental Radioactivity Performance Evaluation Studies Program information brochure
{Draft Revision of EPA-600/4-81-004], available from Patricia Honsa, ESD-LV, 702/798-2141,
-------
ESD-LV Performance Evaluation: Gross Alpha-Beta in Water, 30-Jan-1998 3/16
Gross Alpha
Statistical Summary
189 Participants
The known value of this nuclide is 30.5 pCi/1 with an expected precision of 7.6; the control limits
are 17.3 to 43.7; the warning regions are 17.3 to 21.7 and 39.3 to 43.7
39(20.6 %) Failed to respond
, 68(36.0 %) Within all limits
1 (0.5 %} Outliers '*
.

41 (21.7 %) Out of control *

- 40(21.2 %) In warning zone
but not an outlier
I

but within control
Statistic
Respondents
Non-outliers
Mean
21.52
Grand Avg 21.36
Std. Dev.
6.28
5.99
Variance
39.42
35.94
% Coef. of Var.
29.17
28.06
% deviation of mean from known value
-29.44
-29.95
Norm. dev. of mean from known value
-1.43
-1.52
Median
21.25
21.23
% deviation of median from known value
-30.33
-30.38
Norm. dev. of median from known value
-1.47
-1.55
¦43(28.7 %) More than 3 norm. S.D.,
39(26.0 %) Between 2 and 3 norm. S.D.1
S 26(17.3 %) Within 1 norm. S.D.
of known value



	
"n', V'l
42(28.0 %) Between 1 and 2 norm. S.D.
-------
4/16 ESD-LV Performance Evaluation: Gross Alpha-Beta in Water, 30-Jan-1998
^ 	
Gross Alpha
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tat
A
21.8
25.2
19.2
3.01
0.466
22.07
0.16
-1.92
AE
20.5
21.5
19.6
0.95
0.148
20.53
-0.19
-2.27
AF
21.2
18.1
24.1
3.00
0.466
21.13
-0.05
-2.13
AH
17.9
18.4
17.3
0.55
0.085
17.87
-0.80
-2.88
AJ
18.4
20.3
18.7
1.02
0.148
19.13
-0.51
-2.59
AK
17.8
18.6
19.0
0.61
0.093
18.47
-0.66
-2.74
AL
28.4
28.2
29.1
0.47
0.070
28.57
1.64
-0.44
AP







•
AR
21.3
21.3
19.3
1.15
0.155
20.63
-0.17
-2.25
AU
36.4
34.0
35.3
1.20
0.187
35.23
3.16
1.08
AW
24.1
24.3
26.8
1.50
0.210
25.07
0.84
-1.24
AZ
22.5
25.0
23.8
1.25
0.194
23.77
0.55
-1.53
BA
23.8
24.9
25.9
1.05
0.163
24.87
0.80
-1.28
BB







•
BC
25.1
28.3
25.6
1.72
0.249
26.33
1.13
-0.95
BG







•
BH
26.5
20.9
24.1
2.81
0.435
23.83
0.56
-1.52
BK
21.7
22.2
22.0
0.25
0.039
21.97
0.14
-1.94
BL
30.5
28.7
32.2
1.75
0.272
30.47
2.07
-0.01
BM
25.5
25.0
26.3
0.66
0.101
25.60
0.97
-1.12
BN
9.7
9.0
11.2
1.12
0.171
9.97
-2.60
-4.68 JJ
BO
17.0
18.3
15.8
1.25
0.194
17.03
-0.99
-3.07 U-
BS
23.6
26.3
27.1
1.83
0.272
25.67
0.98
-1.10
C
28.5
27.5
25.8
1.36
0.210
27.27
1.35
-0.74
CA
32.8
28.6
32.1
2.25
0.326
31.17
2.23
0.15
CC








CE
22.9
20.0
24.0
2.07
0.311
22.30
0.21
-1.87
CJ
35.0
34.0
30.0
2.65
D.389
33.00
2.65
0.57
CO
11.9
18.2
19.0
3.89
0.552
16.37
-1.14
-3.22 U
CP
15.0
14.0
13.0
1.00
0.155
14.00
-1.68
-3.76 U
cs







•
cx
17.9
18.6
18.0
0.38
0.054
18.17
-0.73
-2.81
D
22.5
26.6
27.0
2.49
0.350
25.37
0.91
-1.17
D*
27.4
32.3
31.3
2.59
0.381
30.33
2.04
-0.04
DB
25.6
26.1
27.0
0.71
0.109
26.23
1.11
-0.97
DD
16.7
18.8
19.3
1.38
0.202
18.27
-0.71
-2.79
DE
21.9
21.9
22.0
0.06
0.008
21.93
0.13
-1.95
DH
14.2
13.6
13.4
0.42
0.062
13.73
-1.74
-3.82 U
DO
26.0
23.0
29.0
3.00
0.466
26.00
1.06
-1.03
DR
4.2
5.7
5.8
0.90
0.124
5.23
-3.68
-5.76 U
DT
20.8
19.7
18.6
1.10
0.171
19.70
-0.38
-2.46
DZ
21.4
19.2
23.8
2.30
0.358
21.47
0.02
-2.06
Ij
EB
30.5
29.9
28.9
0.81
0.124
29.77
1.91
-0.17
EL
11.5
7.6
10.2
1.99
0.303
9.77
-2.64
-4.73 U
• s No data submitted	TAG SYMBOLS	It = Above control limit
0 = Insufficient data	x = Determined to be an outlier	II s Below control limit
-------
ESD-LV Performance Evaluation: Gross Alpha-Beta in Water, 30-Jan-1998 5/16
~ - -
Gross Alpha
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
\
Normalized deviation
(grand-avg) (known) Tag
EO
15.0
15.0
17.0
1.15
0.155
15.67
-1.30
-3.38
4
ER
21.2
21.9
21.0
0.47
0.070
21.37
0.00
-2.08

EV
14.1
14.1
16.8
1.56
0.210
15.00
-1.45
-3.53

EW








~
EX
17.0
14.2
15.0
1.44
0.218
15.40
-1.36
-3.44
11
FE
16.0
18.8
19.7
1.93
0.288
18.17
-0.73
-2.81

FF
23.5
21.2
20.6
1.53
0.225
21.77
0.09
-1.99

FJ








•
FL
11.5
12.5
14.0
1.26
0.194
12.67
-1.98
-4.06

FN
18.0
16.0
18.0
1.15
0.155
17.33
-0.92
-3.00

GQ
27.3
26.4
24.6
1.37
0.210
26.10
1.08
-1.00

GZ








•
HE








•
HI
12.8
13.5
16.5
1.97
0.288
14.27
-1.62
-3.70

HK
16.2
14.6
14.4
0.99
0.140
15.07
-1.44
-3.52
li
HL
16.7
20.0
17.7
1.69
0.256
18.13
-0.74
-2.82

HP
11.3
13.5
13.1
1.17
0.171
12.63
-1.99
-4.07
li
I
15.7
17.1
17.8
1.07
0.163
16.87
-1.03
-3.11
II
ID
18.8
14.7
13.5
2.78
0.412
15.67
-1.30
-3.38

IU








•
J
30.0
32.1
32.6
1.38
0.202
31.57
2.33
0.24

JE
13.7
13.9
10.8
1.73
0.241
12.80
-1.95
-4.03
II
JG
16.1
15.6
13.3
1.49
0.218
15.00
-1.45
-3.53
11
JM
24.7
25.3
19.7
3.07
0.435
23.23
0.43
-1.66

JN
23.2
23.3
22.8
0.26
0.039
23.10
0.40
-1.69

JP
22.7
21.1
23.6
1.27
0.194
22.47
0.25
-1.83

JQ
20.2
23.6
23.7
1.99
0.272
22.50
0.26
-1.82

JS
24.7
22.1
23.3
1.30
0.202
23.37
0.46
-1.63

JY
25.5
23.4
27.2
1.90
0.295
25.37
0.91
-1.17

K
30.4
28.9
26.7
1.86
0.288
28.67
1.66
-0.42

KE
20.4
19.3
22.7
1.73
0.264
20.80
-0.13
-2.21

KH
17.5
13.2
17.0
2.35
0.334
15.90
-1.25
-3.33
u
KT
28.0
30.0
31.0
1.53
0.233
29.67
1.89
-0.19

KX
13.0
13.0
13.0
0.00
0.000
13.00
-1.91
-3.99
u
L
19.3
18.9
21.1
i.17
0.171
19.77
-0.36
-2.45

LE








~
LF
24.0
19.0
20.0
2.65
0.389
21.00
-0.08
-2.17

LL
21.9
21.4
23.8
1.27
0.187
22.37
0.23
-1.85

LR
9.2
8.2
8.5
0.51
0.078
8.63
-2.90
-4.98
u
LT
13.7
18.4
15.6
2.36
0.365
15.90
-1.25
-3.33

M
17.2
21.8
17.9
2.48
0.358
18.97
-0.55
-2.63

MF
19.9
19.0
21.0
1.00
0.155
19.97
-0.32
-2.40

MV
22.3
23.0
16.1
3.80
0.536
20.47
-0.20
-2.29

MX








•
N
23.1
21.7
22.4
0.70
0.109
22.40
0.24
-1.85

• s No data submitted
0 s Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
IT == Above control limit
s Below control limit
-------
/S 		—	
6/16 ESD-LV Performance Evaluation: Gross Alpha-Beta in Water, 30-Jan-1998
	
Gross Alpha








Lab
Res. 1


Exper.
Rng anal

Normalized deviation

Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
NA
15.6
16.0
14.5
0.78
0.117
15.37
-1.37
-3.45
U
NB
10.6
12.1
16.1
2.84
0.427
12.93
-1.92
-4.00
U
NH
12.5
15.0
17.5
2.50
0.389
15.00
-1.45
-3.53

NJ
17.0
14.0
17.0
1.73
0.233
16.00
-1.22
-3.30

NK








•
NO








»
NP
15.2
16.3
18.5
1.68
0.256
16.67
-1.07
-3.15

O
25.2
27.4
25.7
1.15
0.171
26.10
1.08
-1.00

OA








•
OB
26.3
23.8
28.7
2.45
0.381
26.27
1.12
-0.96

OF
15.0
15.1
15.4
0.21
0.031
15.17
-1.41
-3.49

OS
22.0
21.0
22.0
0.58
0.078
21.67
0.07
-2.01

OT








~
OY








•
P
14.6
15.7
19.2
2.40
0.358
16.50
-1.11
-3.19
Ji
PA








•
PB
21.5
21.3
21.7
0.20
0.031
21.50
0.03
-2.05

PD








•
PG
21.4
23.1
25.1
1.85
0.288
23.20
0.42
-1.66

PM
22.5
21.4
23.0
0.82
0.124
22.30
0.21
-1.87

Q
18.0
17.1
16.7
0.67
0.101
17.27
-0.93
-3.02

QM
20.6
23.1
17.7
2.70
0.420
20.47
-0.20
-2.29

QP
29.6
28.4
27.8
0.92
0.140
28.60
1.65
-0.43

QQ
17.0
23.1
13.3
4.95
0.762
17.80
-0.81
-2.89

QT
24.2
22.1
21.4
1.46
0.218
22.57
0.27
-1.81

QU
23.1
25.9
28.4
2.65
0.412
25.80
1.01
-1.07

QW
24.4
29.9
29.4
3.04
0.427
27.90
1.49
-0.59

QX
14.7
15.1
14.2
0.45
0.070
14.67
-1.53
-3.61
u
QZ
31.1
24.8
25.2
3.53
0.490
27.03
1.29
-0.79

R
11.2
8.1
10.0
1.56
0.241
9.77
-2.64
-4.73

RB
26.2
26.7
33.4
4.02
0.560
28.77
1.69
-0.40

RD
27.9
25.9
25.7
1.22
0.171
26.50
1.17
-0.91

RG
16.0
17.0
16.7
0.51
0.078
16.57
-1.09
-3.18
li
RI
22.5
23.2
17.8
2.94
0.420
21.17
-0.05
-2.13

RK








•
RR
25.0
29.0
28.0
2.08
0.311
27.33
. 1.36
-0.72

RZ
24.7
23.0
23.2
0.93
0.132
23.63
0.52
-1.56

S
30.1
32.6
28.9
1.89
0.288
30.53
2.09
0.01

sc








•
SD
22.7
24.7
25.7
1.53
0.233
24.37
0.68
-1.40

SF
17.6
17.1
23.5
3.56
0.497
19.40
-0.45
-2.53

SO
52.7
37.1
45.2
7.80
1.405
45.00
5.39
3.30
X
SI
20.9
21.1
18.8.
1.27
0.179
20.27
-0.25
-2.33

SL
26.8
23.1
26.7
2.11
0.288
25.53
0.95
-1.13

SM
19.7
18.2
20.0
0.96
0.140
19.30
-0.47
-2.55

• =
No data submitted

TAG SYMBOLS

ft = Above control limit
10-
Insufficient data
x =
Determined to be an outlier
U s Below control limit
	
-------
		 ^
ESD-LV Performance Evaluation: Gross Alpha-Beta in Water, 30-Jan-1998 7/16
Gross Alpha
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
SN
18.4
20.1
17.4
1.37
0.210
18.63
-0.62
-2.70

SO
17.4
16.7
14.7
1.40
0.210
16.27
-1.16
-3.24
u
SR
18.4
22.4
22.7
2.40
0.334
21.17
-0.05
-2.13

ss
20.9
25.1
22.4
2.13
0.326
22.80
0.33
-1.75

su
15.8
17.2
15.8
0.81
0.109
16.27
-1.16
-3.24
u
sv
22.2
20.0
21.5
1.12
0.171
21.23
-0.03
l
to
J—

sx
14.3
15.0
15.7
0.70
0.109
15.00
-1.45
-3.53
u
sz
13.0
18.4
15.7
2.70
0.420
15.70
-1.29
-3.37

T
23.1
24.9
26.3
1.60
0.249
24.77
0.78
-1.31

TD
19.2
21.4
25.3
3.09
0.474
21.97
0.14
-1.94

TL








•
TN
22.5
20.8
24.3
1.75
0.272
22.53
0.27
-1.82

TQ
17.8
15.4
15.7
1.31
0.187
16.30
-1.15
-3.24

TW
21.3
18.7
23.8
2.55
0.396
21.27
-0.02
-2.10

TX








•
TY
17.7
20.8
18.8
1.57
0.241
19.10
-0.52
-2.60

U
27.9
27.7
25.5
1.33
0.187
27.03
1.29
-0.79

UA








•
UM








•
UP
27.2
25.2
27.9
1.40
0.210
26.77
1.23
-0.85

UQ
22.2
23.2
22.2
0.58
0.078
22.53
0.27
-1.82

UY








•
VA








~
VC








•
VH
28.3
30.0
26.3
1.85
0.288
28.20
1.56
-0.52

VI
22.2
21.5
17.1
2.76
0.396
20.27
-0.25
-2.33

VJ
17.1
17.1
19.2
1.21
0.163
17.80
-0.81
-2.89

VO
23.8
19.9
15.6
4.10
0.637
19.77
-0.36
-2.45

VT
22.4
22.9
21.7
0.60
0.093
22.33
0.22
-1-86

W








•
WE
17.9
17.6
13.3
2.57
0.358
16.27
-1.16
-3.24

WH
20.0
21.3
19.2
1.06
0.163
20.17
-0.27
-2.35

WJ








•
WN
38.4
43.5
45.0
3.46
0.513
42.30
4.77
2.69

WO
21.4
21.6
15.7
3.35
0.459
19.57
-0.41
-2.49

WP
19.8
37.7
24.7
9.25
1.745
27.40
1.38
-0.71

WR
21.4
22.0
27.8
3.53
0.497
23.73
0.54
-1.54

WS








•
WU








•
WW
14.7
12.5
15.5
1.55
0.233
14.23
-1.63
-3.71

WX








•
X
22.7
20.1
24.9
2.40
0.373
22.57
0.27
-1.81

XB








•
XC







<
•
XD








•
• s No data submitted TAG SYMBOLS ft = Above control limit
0 s Insufficient data	x = Determined to be an outlier	11 = Below control limit
-------
8/16
ESD-LV Performance Evaluation: Gross Alpha-Beta in Water, 30-Jan-1998
Gross Alpha
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) fknown^ Tag
XF
36.7
34.8
40.0
2.63
0.404
37.17
3.60
1.52
XI
20.0
16.0
19.0
2.08
0.311
18.33
-0.69
-2.77
XJ
15.7
15.7
16.9
0.69
0.093
16.10
-1.20
-3.28 U
XK







•
XL
27.7
28.2
26.7
0.76
0.117
27.53
1.41
-0.68
XM
25.6
23.3
25.3
1.25
0.179
24.73
0.77
-1.31
XN
43.6
37.4
35.2
4.36
0.653
38.73
3.96
1.88
xo







•
XQ
20.7
52.0
22.1
17.68
3.729
31.60
2.33
0.25
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
5.23
u
DR
16.30
U
TQ
20.47

MV
8.63
u
LR
16.37

CO
20.53

AE
9.77
u
EL
16.50
11
P
20.63

AR
9.77
u
R
16.57
11
RG
20.80

KE
9.97
u
BN
16.67
11
NP
21.00

LF
12.63
u
HP
16.87
11
I
21.13

AF
12.67
u
FL
17.03
11
BO
21.17

SR
12,80
n
JE
17.27
11
Q
21.17

RI
12.93
u
NB
17.33

FN
21.23

SV
13.00
n
KX
17.80

VJ
21.27

TW
13.73
u
DH
17.80

QQ
21.37

ER
14.00
u
CP
17.87

AH
21.47

DZ
14.23
u
WW
18.13

HL
21.50

PB
14.27
n
HI
18.17

FE
21.67

OS
14.67
u
QX
18.17

CX
21.77

FF
15.00
u
sx
18.27

DD
21.93

DE
15.00
u
NH
18.33

XI
21.97

TD
15.00
u
JG
18.47

AK
21.97

BK
15.00

EV
18.63

SN
22.07

A
15.07
u
HK
18.97

M
22.30

PM
15.17
u
OF
19.10

TY
22.30

CE
15.37
u
NA
19.13

AJ
22.33

VT
15.40
It
EX
19.30

SM
22.37

LL
15.67
11
ID
19.40

SF
22.40

N
15.67
u
EO
19.57

WO
22.47

JP
15.70

SZ
19.70

DT
22.50

JQ
15.90
u
LT
19.77

VO
22.53

TN
15.90
u
KH
19.77

L
22.53

UQ
16.00
u
NJ
19.97

MF
22.57

X
16.10
u
XJ
20.17

WH
22.57

QT
16.27
u
WE
20.27

SI
22.80

SS
16.27
u
SO
20.27

VI
23.10

JN
16.27
u
su
20.47

QM
23.20

PG
• s No data submitted
0 = Insufficient data

TAG SYMBOLS
x = Determined to be an outlier
ft
11
; Above control limit
= Below control limit
-------
ESD-LV Performance Evaluation: Gross Alpha-Beta in Water, 30-Jan-1998 9/16
Gross Alpha
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
23.23

JM
26.00

DO
28.60

QP
23.37

JS
26.10

O
28.67

K
23.63

RZ
26.10

GQ
28.77

RB
23.73

WR
26.23

DB
29.67

KT
23.77

AZ
26.27

OB
29.77

EB
23.83

BH
26.33

BC
30.33

D*
24.37

SD
26.50

RD
30.47

BL
24.73

XM
26.77

UP
30.53

S
24.77

T
27.03

U
31.17

CA
24.87

BA
27.03

QZ
31.57

J
25.07

AW
27.27

c
31.60

XQ
25.37

JY
27.33

RR
33.00

CJ
25.37

D
27.40

WP
35.23

AU
25.53

SL
27.53

XL
37.17

XF
25.60

BM
27.90

QW
38.73

XN
25.67

BS
28.20

VH
42.30

WN
25.80

QU
28.57

AL
45.00
X
SG
10
responding labs
Frequency distribution
_Tm.	
-6
responding labs
-4	-2	0	+2	+4
Normalized deviation of the mean from the known value
Frequency distribution
+6
10-
T-
-6
—I-
-4
"¦-¦llfliHHMifl
—t— —
2	0+2+4
Normalized deviation of the mean from the grand average
+6
• = No data submitted	TAG SYMBOLS	IT = Above control limit
0 s Insufficient data	x = Determined to be an outlier	II = Below control limit
-------
ESD-LV Performance Evaluation: Gross Alpha-Beta in Water, 30-Jan-1998 10/16
Gross Beta	Statistical Summary	189 Participants
The known value of this nuclide is 3.9 pCi/1 with an expected precision of 5.0; the control limits
are 0.0 to 12.6; the warning regions are 0.0 to 0.0 and 9.7 to 12.6
38(20.1 %) Failed to respond •„
8(4.2 %) Outliers •'
3( 1.6 %) Out of control '
but not an outlier
Statistic
122(64.6 %) Within all limits
Respondents
18(9.5 %) In warning zone
but within control
Non-outliers
Mean
8.34
Grand Avg 7.44
Std. Dev.
5.03
2.59
Variance
25.27
6.70
% Coef. of Var.
60.30
34.78
% deviation of mean from known value
113.74
90.76
Norm. dev. of mean from known value
0.88
1.37
Median
7.57
7.50
% deviation of median from known value
94.02
92.31
Norm. dev. of median from known value
0.73
1.39
12(7.9 %) More than 3 norm. S.D.
52(34.4 %) Within 1 norm. S.D.
of known value

17(11.3 %) Between 2 and 3 norm. S.D. •
V' * ^ « S-W ^
	
£xm
mmnm
70(46.4 %) Between 1 and 2 norm. S.D.
-------
11/16 ESD-LV Performance Evaluation: Gross Alpha-Beta in Water, 30-Jan-1998
Gross Beta
Lab
Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
fR + SR)
Average
Normalized deviation
(grand-avg) Cknown) Tag
A
5.2
5.1
5.6
0.26
0.059
5.30
-0.74
0.48
AE
6.8
6.8
6.5
0.17
0.035
6.70
-0.26
0.97
AF
9.4
10.7
9.3
0.78
0.165
9.80
0.82
2.04
AH
8.0
8.6
9.4
0.70
0.165
8.67
0.43
1.65
AJ
6.1
7.8
6.5
0.89
0.201
6.80
-0.22
1.00
AK
5.9
5.2
5.4
0.36
0.083
5.50
-0.67
0.55
AL
7.4
7.2
7.3
0.10
0.024
7.30
-0.05
1.18
AP







•
AR
7.7
8.3
7.7
0.35
0.071
7.90
0.16
1.39
AU
7.4
9.6
6.1
1.77
0.413
7.70
0.09
1.32
AW
6.6
7.8
8.3
0.87
0.201
7.57
0.04
1.27
AZ
7.0
6.0
4.8
1.10
0.260
5.93
-0.52
0.70
BA
10.3
15.6
16.7
3.42
0.756
14.20
2.34
3.57 IT
BB







•
BC
9.9
15.5
11.8
2.85
0.662
12.40
1.72
2.94
BG







•
BH
8.4
6.9
7.6
0.75
0.177
7.63
0.07
1.29
BK
7.7
6.9
5.3
1.22
0.284
6.63
-0.28
0.95
BL
8.4
8.5
8.3
0.10
0.024
8.40
0.33
1.56
BM
7.2
6.3
6.5
0.47
0.106
6.67
-0.27
0.96
BN
1.4
2.0
2.1
0.38
0.083
1.83
-1.94
-0.72
BO
4.1
4.2
4.7
0.32
0.071
4.33
-1.08
0.15
BS
6.4
7.3
7.1
0.47
0.106
6.93
-0.18
1.05
C
5.0
4.7
4.2
0.40
0.095
4.63
-0.97
0.25
CA
7.1
5.9
6.8
0.62
0.142
6.60
-0.29
0.94
CC







+
CE
4.6
4.6
5.2
0.35
0.071
4.80
-0.91
0.31
CJ
5.6
6.5
4.7
0.90
0.213
5.60
-0.64
0.59
CO
3.3
5.9
5.4
1.38
0.307
4.87
-0.89
0.33
CP
8.0
7.0
7.0
0.58
0.118
7.33
-0.04
1.19
cs







•
cx
8.2
4.4
7.1
1.96
0.449
6.57
-0.30
0.92
D
9.0
8.8
8.2
0.42
0.095
8.67
0.43
1.65
D*
4.6
6.7
4.8
1.16
0.248
5.37
-0.72
0.51
DB
8.1
9.1
10.3
1.10
0.260
9.17
0.60
1.82
DD
16.6
13.0
15.7
1.87
0.425
15.10
2.65
3.88 ft
DE
5.3
5.6
5.7
0.21
0.047
5.53
-0.66
0.57
DH
6.2
7.3
7.3
0.64
0.130
6.93
-0.18
1.05
DO
8.9
7.6
8.3
0.65
0.154
8.27
0.29
1.51
DR
6.3
7.3
7.1
0.53
0.118
6.90
-0.19
1.04
DT
7.8
9.2
8.0
0.76
0.165
8.33
0.31
1.54
DZ
1?
10.2
12.2
12.7
1.32
0.295
11.70
1.48
2.70
JBi
EB
8.0
6.8
7.2
0.61
0.142
7.33
-0.04
1.19
EL
6.8
5.8
7.4
0.81
0.189
6.67
-0.27
0.96
• = No data submitted	TAG SYMBOLS	ft = Above control limit
0 - Insufficient data	x - Determined to be an outlier	11 = Below control limit J
-------
(f	
>-
	^
ESD-LV Performance Evaluation: Gross Alpha-Beta in Water, 30-Jan-1998 12 / 16
Gross Beta







\
Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation

Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
EO
10.0
8.0
8.0
1.15
0.236
8.67
0.43
1.65

ER








•
EV
9.6
6.6
6.8
1.68
0.354
7.67
0.08
1.30

EW
9.2
9.4
9.3
0.10
0.024
9.30
0.64
1.87

EX
4.5
5.3
5.7
0.61
0.142
5.17
-0.79
0.44

FE
6.0
6.0
5.0
0.58
0.118
5.67
-0.61
0.61

FF
9.4
9.0
9.4
0.23
0.047
9.27
0.63
1.86

FJ








•
FL
8.8
7.4
6.5
1.16
0.272
7.57
0.04
1.27
'
FN
9.0
8.0
10.0
1.00
0.236
9.00
0.54
1.77

GQ
29.3
24.8
25.9
2.35
0.532
26.67
6.66
7.89
X
GZ








•
HE








•
HI
20.9
21.8
15.6
3.35
0.732
19.43
4.15
5.38
X
HK
8.8
9.3
7.6
0.87
0.201
.8.57
0.39
1.62

HL
7.2
19.4
8.5
6.70
1.840
11.70
1.48
2.70

HP
8.1
9.4
5.6
1.93
0.449
7.70
0.09
1.32

I
7.3
5.4
6.4
0.95
0.224
6.37
-0.37
0.85

ID
13.5
10.8
13.4
1.53
0.319
12.57
1.78
3.00

IU
9.6
8.4
9.3
0.62
0.142
9.10
0.58
1.80

J
5.6
5.9
6.1
0.25
0.059
5.87
-0.54
0.68

JE
14.3
8.9
8.7
3.18
0.662
10.63
1.11
2.33

JG
5.5
5.2
4.8
0.35
0.083
5.17
-0.79
0.44

JM
7.8
6.8
8.1
0.68
0.154
7.57
0.04
1.27

JN
0.5
0.1
1.0
0.45
0.106
0.53
-2.39
-1.17

JP
4.2
6.1
3.0
1.56
0.366
4.43
-1.04
0.18

JQ
0.0
0.0
0.0
0.00
0.000
0.00
-2.58
-1.35

JS
2.8
4.2
4.7
0.98
0.224
3.90
-1.23
0.00

JY
7.2
10.8
9.6
1.83
0.425
9.20
0.61
1.84

K
7.6
8.5
9.2
0.80
0.189
8.43
0.34
1.57

KE
9.1
8.1
11.0
1.47
0.343
9.40
0.68
1.91

KH
7.0
5.9
5.9
0.64
0.130
6.27
-0.41
0.82

KT
3.0
4.0
5.0
1.00
0.236
4.00
-1.19
0.03

KX
7.0
8.0
7.0
0.58
0.118
7.33
-0.04
1.19

L
7.3
6.7
8.6
0.97
0.224
7.53
0.03
1.26

LE








#
LF
7.6
7.1
7.0
0.32
0.071
7.23
-0.07
1.15

LL
8.2
5.3
6.2
1.48
0.343
6.57
-0.30
0.92

LR
8.6
8.0
11.0
1.59
0.354
9.20
0.61
1.84

LT
6.2
9.0
8.7
1.54
0.331
7.97
0.18
1.41

M
6.0
6.1
3.9
1.24
0.260
5.33
-0.73
0.50

MF
10.0
11.2
9.7
0.79
0.177
10.30
0.99
2.22

MV
9.4
9.2
16.0
3.87
0.803
11.53
1.42
2.64

MX








•
N
3.0
3.4
3.2
0.20
0.047
3.20
-1.47
-0.24

• =
No data submitted

TAG SYMBOLS

IT = Above control limit
[0-
Insufficient data
x =
Determined to be an outlier
11 = Below control limit
	-i>
-------
S.			:— 			"			
13/16 ESD-LV Performance Evaluation: Gross Alpha-Beta in Water, 30-Jan-1998
	^
Gross Beta








Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation

Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
NA
6.1
6.2
6.8
0.38
0.083
6.37
-0.37
0.85

NB
8.5
9.7
7.7
1.01
0.236
8.63
0.41
1.64

NH
8.0
9.0
11.0
1.53
0.354
9.33
0.66
1.88

NJ
7.1
6.5
7.6
0.55
0.130
7.07
-0.13
1.10

NK








•
NO








•
NP
7.3
6.6
6.3
0.51
0.118
6.73
-0.24
0.98

O
6.5
6.7
7.1
0.31
0.071
6.77
-0.23
0.99

OA








•
OB
18.3
17.8
20.0
1.15
0.260
18.70
3.90
5.13
X
OF
4.7
4.9
5.5
0.42
0.095
5.03
-0.83
0.39

OS
8.0
9.0
8.0
0.58
0.118
8.33
0.31
1.54

OT
6.8
8.7
6.0
1.39
0.319
7.17
-0.09
1.13

OY








•
P
8.5
7.0
10.8
1.91
0.449
8.77
0.46
1.69

PA








•
PB
8.8
8.6
8.6
0.12
0.024
8.67
0.43
1.65

PD
16.8
9.7
10.2
3.96
0.839
12.23
1.66
2.89

PG
9.3
10.0
8.3
0.85
0.201
9.20
0.61
1.84

PM
7.8
9.0
5.2
1.94
0.449
7.33
-0.04
1.19

Q
9.0
8.6
7.7
0.67
0.154
8.43
0.34
1.57

QM
8.3
7.3
8.6
0.68
0.154
8.07
0.22
1.44

QP
0.4
0.9
1.0
0.32
0.071
0.77
-2.31
-1.09

QQ
7.4
10.7
5.5
2.63
0.614
7.87
0.15
1.37

QT
4.9
0.9
7.5
3.32
0.780
4.43
-1.04
0.18

QU
9.9
10.0
11.9
1.13
0.236
10.60
1.09
2.32

QW
8.9
9.1
7.9
0.64
0.142
8.63
0.41
1.64

QX
9.8
11.4
10.4
0.81
0.189
10.53
1.07
2.30

QZ
6.1
5.7
5.3
0.40
0.095
5.70
-0.60
0.62

R
7.1
7.1
7.7
0.35
0.071
7.30
-0.05
1.18

KB
20.0
23.6
22.9
1.91
0.425
22.17
5.10
6.33
X
RD
23.9
15.1
19.4
4.40
1.075
19.47
4.17
5.39
X
RG
8.4
9.4
9.4
0.58
0.118
9.07
0.56
1.79

RI
11.2
7.0
13.9
3.48
0.815
10.70
1.13
2.36

RK








•
RR
9.4
8.1
8.3
0.70
0.154
8.60
0.40
1.63

RZ
9.5
10.3
9.4
0.49
0.106
9.73
0.79
2.02

S
10.1
10.4
9.9
0.25
0.059
10.13
0.93
2.16

sc








•
SD








•
SF
5.2
4.7
4.6
0.32
0.071
4.83
-0.90
0.32

SG
6.0
4.3
6.3
1.08
0.236
5.53
-0.66
0.57

SI
11.1
9.9
7.5
1.83
0.425
9.50
0.71
1.94

SL
4.2
4.8
4.7
0.32
0.071
4.57
-1.00
0.23

SM
7.8
6.0
6.3
0.96
0.213
6.70
-0.26
0.97

• =
No data submitted

TAG SYMBOLS

fl h Above control limit
in
8
Insufficient data
x =
Determined to be an outlier
Ji = Below control limit
-------
f(	








	

ESD-LV Performance Evaluation: Gross Alpha-Beta in Water, 30-Jan-1998 14 / 16
'
Gross Beta








Lab
Res. 1


Exper.
Rng anal

Normalized deviation

Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
SN
6.0
6.2
6.1
0.10
0.024
6.10
-0.46
0.76

SO
6.9
7.2
7.0
0.15
0.035
7.03
-0.14
1.09

SR
7.4
8.0
8.2
0.42
0.095
7.87
0.15
1.37

ss
7.1
6.7
6.7
0.23
0.047
6.83
-0.21
1.02

su
5.1
5.3
5.6
0.25
0.059
5.33
-0.73
0.50

sv
8.6
6.4
8.0
1.14
0.260
7.67
0.08
1.30

sx
9.2
9.5
10.0
0.40
0.095
9.57
0.74
1.96

sz
5.8
5.8
5.7
0.06
0.012
5.77
-0.58
0.65

T
5.1
3.8
6.9
1.56
0.366
5.27
-0.75
0.47

TD
2.7
3.3
3.9
0.60
0.142
3.30
-1.43
-0.21

TL








•
TN
9.3
7.9
6.7
1.30
0.307
7.97
0.18
1.41

TQ
5.2
6.1
5.6
0.45
0.106
5.63
-0.63
0.60

TW
5.8
3.5
2.7
1.61
0.366
4.00
-1.19
0.03

TX








•
TY
4.9
5.0
4.6
0.21
0.047
4.83
-0.90
0.32

U
7.5
7.7
8.1
0.31
0.071
7.77
0.11
1.34

UA








•
UM








•
UP
5.6
6.7
5.9
0.57
0.130
6.07
-0.48
0.75

UQ
7.3
8.4
8.6
0.70
0.154
8.10
0.23
1.45

UY
7.1
6.9
7.5
0.31
0.071
7.17
-0.09
1.13

VA








~
VC








•
VH
16.3
15.2
14.8
0.78
0.177
15.43
2.77
4.00
IT
VI
8.8
7.8
5.9
1.47
0.343
7.50
0.02
1.25

VJ
10.7
10.4
9.8
0.46
0.106
10.30
0.99
2.22

VO
9.5
8.9
9.3
0.31
0.071
9.23
0.62
1.85

VT
22.7
26.4
16.1
5.22
1.413
21.73
4.95
6.18
X
W








•
WE
8.1
10.0
7.8
1.19
0.260
8.63
0.41
1.64

WH
2.3
2.9
3.3
0.50
0.118
2.83
-1.60
-0.37

WJ








•
WN
43:3-
43;7
56.1
7.28
1.975
47.70
13.95
15.17
X
WO
10.5
13.3
10.7
1.56
0.331
11.50
1.41
2.63

WP








•
WR
8.1
10.6
12.2
2.07
0.484
10.30
0.99
2.22

WS








•
WU








•
WW
5.1
3.6
6.7
1.55
0.366
5.13
-0.80
0.43

wx









X
9.8
6.8
7.7
1.54
0.354
8.10
0.23
1.45

XB








•
XC








•
XD








•
• =
No data submitted

TAG SYMBOLS

IT = Above control limit
s
III
Insufficient data
x =
Determined to be an outlier
li = Below control limit
-------
15 / 16 ESD-LV Performance Evaluation: Gross Alpha-Beta in Water, 30-Jan-1998
Gross Beta
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
fgrand-avg) (known) Tag
XF
4.8
5.3
3.2
1.10
0.248
4.43
-1.04
0.18

XI
13.0
13.0
9.0
2.31
0.473
11.67
1.46
2.69

XJ








•
XK








•
XL
9.1
9.3
8.9
0.20
0.047
9.10
0.58
1.80

XM
2.3
3.1
2.9
0.42
0.095
2.77
-1.62
-0.39

XN
9.0
9.9
7.7
1.11
0.260
8.87
0.49
1.72

xo








0
XQ
17.9
19.0
20.1
1.10
0.260
19.00
4.00
5.23
X
[V^
" '•' V- !.*¦ -sfVA',
./ -.v.

< •> "i. •



u-.ivy:.

Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
0.00

JQ
5.60

CJ
7.30

AL
0.53

JN
5.63

TQ
7.33

PM
0.77

QP
5.67

FE
7.33

KX
1.83

BN
5.70

QZ
7.33

EB
2.77

XM
5.77

SZ
7.33

CP
2.83

WH
5.87

J
7.50

VI
3.20

N
5.93

AZ
7.53

L
3.30

TD
6.07

UP
7.57

JM
3.90

JS
6.10

SN
7.57

FL
4.00

TW
6.27

KH
7.57

AW
4.00

KT
6.37

NA
7.63

BH
4.33

BO
6.37

I
7.67

SV
4.43

XF
6.57

LL
7.67

EV
4.43

QT
6.57

CX
7.70

HP
4.43

JP
6.60

CA
7.70

AU
4.57

SL
6.63

BK
7.77

U
4.63

C
6.67

EL
7.87

SR
4.80

CE
6.67

BM
7.87

QQ
4.83

TY
6.70

SM
7.90

AR
4.83

SF
6.70

AE
7.97

TN
4.87

CO
6.73

NP
7.97

LT
5.03

OF
6.77

O
8.07 .

QM
5.13

WW
6.80

AJ
8.10

X
5.17

JG
6.83

SS
8.10

UQ
5.17

EX
6.90

DR
8.27

DO
5.27

T
6.93

DH
8.33

OS
5.30

A
6.93

BS
8.33

DT
5.33

SU
7.03

SO
8.40

BL
5.33

M
7.07

NJ
8.43

Q
5.37

D*
7.17

UY
8.43

K
5.50

AK
7.17

OT
8.57

HK
5.53

SG
7.23

LF
8.60

RR
5.53

DE
7.30

R
8.63

QW
• = No data submitted	TAG SYMBOLS	It s Above control limit
0 " Insufficient data	x = Determined to be an outlier	s Below control limit
-------
f	==^v
ESD-LV Performance Evaluation: Gross Alpha-Beta in Water, 30-Jan-1998 16 /16
L—	J
/" " " "					~			>.
Gross Beta
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
8.63

NB
9.27

FF
11.53

MV
8.63

WE
9.30

EW
11.67

XI
8.67

PB
9.33

NH
11.70

HL
8.67

EO
9.40

KE
11.70

DZ
8.67

D
9.50

SI
12.23

PD
8.67

AH
9.57

sx
12.40

BC
8.77

P
9.73

RZ
12.57

ID
8.87

XN
9.80

AF
14.20
w
BA
9.00

FN
10.13

S
15.10
It
DD
9.07

RG
10.30

WR
15.43
ft
VH
9.10

XL
10.30

VJ
18.70
X
OB
9.10

IU
10.30

MF
19.00
X
XQ
9.17

DB
10.53

QX
19.43
X
HI
9.20

PG
10.60

QU
19.47
X
RD
9.20

LR
10.63

-------
c
United States	Office of Research and	EPA/600/R-98/059
Environmental Protection Development	May 1998
Agency	Washington, DC 20460
&EPA Iodine in Water Performance
Evaluation Study
A Statistical Evaluation of the
February 6, 1998 Data
006ECB98COV-059
-------
Iodine in Water
Performance Evaluation Study
February 6, 1998
Environmental Protection Agency
National Exposure Research Laboratory
Environmental Sciences Division
Las Vegas, Nevada
-------

UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
OFFICE OF RESEARCH AND DEVELOPMENT
NATIONAL EXPOSURE RESEARCH LABORATORY
ENVIRONMENTAL SCIENCES DIVISION-LAS VEGAS
P.O. BOX 93478
LAS VEGAS. NEVADA 89193-3478
(702/798-2100)
Dear Participant,
Enclosed are the results of the Environmental Sciences Division (ESD-LV)
Performance Evaluation Study for Iodine in Water; February 6, 1998.
The known value for each analysis was determined by gravimetric methods,
checked by chemical analyses performed by ESD-LV's Radiochemistry Laboratory,
and compared to the participating laboratories' grand average.
The expected precision, determined by the known value, was taken from
"Table 3. Laboratory Precision: One Standard Deviation Values and Control Limits
for Various Analyses", which is based on data accumulated over the years by the
Performance Evaluation Program, and can be found in the Environmental Radioactivity
Performance Evaluation Studies Program and Radioactive Standards Distribution
Program information brochure.
Please take a few minutes to review this report and the analytical data your
laboratory submitted to us. If there are any apparent discrepancies, please notify us
immediately.
We encourage you to make use of the computer-automated data-entry system
that has been in place for some time now. As the number of participants increases,
and it becomes unrealistic for us to receive results by mail or FAX, the computer
system will be our only avenue for accepting data.
If you have any questions or comments, please send a message via the data-entry
system or contact Stephen Pia at 702/798-2102 or Patricia Honsa at 702/798-2141.
Stephen Pia
Team Leader
RADQA Program
Enclosure
-------
NOTICE
This material has been funded wholly by
the U.S. Environmental Protection Agency.
It has been subjected to the Agency's review,
and has been approved for publication as
an EPA document.
-------
ESD-LV Performance Evaluation: Iodine in Water, 6-Feb-1998
===t\
1/7
The following pages consist of separate sections for each of the nuclides in this study with four
parts per section. After the first, each part is separated from the next by a new page or a thick
horizontal bar. The first page of each section is a statistical summary for the nuclide and starts
with a statement of the known value, the control limits, and the warning limits.
The warning limits are placed at two normalized standard deviations above and below the
known value and the control limits are three normalized standard deviations above and below
the known value. If you keep control charts, these values will be useful for anticipating problems
with the accuracy of your analytical methods.
The coin shaped pie chart at the top of the summary page shows the fate of all the samples
sent out in number and percentage terms. The pie chart starts at the top and rotates clockwise.
The first sector represents those participants who submitted analytical results within both the
warning and control limits. The next sector represents those who are in the warning region but
not out of control. The third sector represents those who are out of control, but have passed
the outlier test. The fourth sector represents those who have failed the outlier test. The last
sector represents those participants who have failed to respond properly. This is the case if no
analytical results were returned, or less than three determinations were reported, or if the results
were received too late. The reeding on the edge of the coin is spaced at one percent intervals, and
the sector shading becomes darker as the data reliability decreases. Sectors with zero width are
not shown.
The table in the center shows a number of statistical quantities calculated from the submitted
data based on the mean and median values in relation to the known value, both before and after
outlier removal. The lower pie chart uses the same construction as the upper chart and shows
the distribution of properly submitted data in terms of deviation from the known value divided
into sectors representing one, two, three, and greater than three normalized standard deviations.
The second part is an alphabetical listing, in lab-code order, of submitted data and several
calculated quantities. An entry that is shaded has been rejected because of one of the reasons
listed above or failure of the outlier test. The fifth and sixth columns are a measure of laboratory
precision. The Range analysis is a normalized value that you may use to keep precision control i
charts. The eighth and ninth columns are the differences from the mean of all non-outliers and
from the known value, respectively. If this value is between 2.0 and 3.0, your analytical process
precision is in the warning zone; if it exceeds 3.0 it is out of control. A tag symbol may appear in
the last column. Each page with tags has a symbol definition summary at the bottom. If there is
no tag symbol, the data is within the control limits, but it may be in the warning zone.
The third part is a three-column listing of result average, tag symbol, and lab-code in average
order excluding those labs not responding properly. In this order, all outliers and out-of-control
results appear at the top or bottom of the list.
The last part is two bar chart displays showing frequency distributions of responding
participants. The first chart places the known value at the center and a bar at each 0.2 unit of
expected precision. The second chart places the mean of the reported measurements at the center
and a bar at each 0.2 unit of standard deviation. In both cases, a bar includes those results within
0.1 unit up to the maximum of six. Any results more than six units from the center value are
shown cumulatively by a shaded bar one past the sixth unit. If the central tendency of the known
value distribution falls away from the center, an error in accuracy is indicated. If the distribution
is broad, poor precision is indicated. The mean value distribution is similar but uses the average
and standard deviation of reported results as its basis.	I
-------
2/7	ESD-LV Performance Evaluation: Iodine in Water, 6-Feb-1998
The Range Analysis(R + SR) is calculated from the range, mean range and standard error of
the range values. The range is the difference between the maximum and minimum results for the
laboratory. The mean range is calculated by multiplying the expected precision by 1.693(for three
results). The standard error of the range is calculated by multiplying the mean range by 2.575(for
three results), subtracting the mean range from this product, and dividing the result by 3. If the
range is greater than the mean range, then the range analysis is calculated by subtracting the
mean range from the range, dividing the result by the standard error of the range and adding 1.
If the mean range is greater than or equal to the range, then the range analysis is calculated by
dividing the range by the mean range.
The normalized deviation of the mean from the grand average is calculated from the deviation
of the mean from the grand average and the standard error of the mean values. The deviation of
the mean from the grand average is calculated by subtracting the grand average from the
average of the laboratory's three results. The standard error of the mean is calculated by
dividing the expected precision by the square root of 3(the number of results). The normalized
deviation of the mean from the grand average is calculated by dividing the deviation of the mean
from the grand average by the standard error of the mean.
The normalized deviation of the mean from the known value is calculated from the deviation of
the mean from the known value and the standard error of the mean values. The deviation of the
mean from the known value is calculated by subtracting the known value from the average of the
laboratory's three results. The standard error of the mean is calculated by dividing the expected
precision by the square root of 3(the number of results). The normalized deviation of the mean
from the known value is calculated by dividing the deviation of the mean from the known value by
the standard error of the mean.
A complete explanation of the statistical calculations involved in the report may be found in
the Environmental Radioactivity Performance Evaluation Studies Program information brochure
[.Draft Revision of EPA-600/4-81-004], available from Patricia Honsa, ESD-LV, 702/798-2141.
-------
ESD-LV Performance Evaluation: Iodine in Water, 6-Feb-1998
3/7
Iodine-131	Statistical Summary	107 Participants
The known value of this nuclide is 104.9 pCi/1 with an expected precision of 10.5; the control limits
are 86.7 to 123.1; the warning regions are 86.7 to 92.7 and 117.1 to 123.1
24(22.4 %) Failed to respond
; 77(72.0 %) Within all limits
*	X.
•	\j \
#	\J X


•	P-v.
#	XI

4(3.7 %) In warning zone
2( 1.9 %) Outliers '*
i i
but within control
Statistic
Respondents
Non-outliers
Mean
104.94
Grand Avg 105.74
Std. Dev.
7.39
5.43
Variance
54.59
29.50
% Coef. of Var.
7.04
5.14
% deviation of mean from known value
0.04
0.80
Norm. dev. of mean from known value
0.01
0.15
Median
104.83
105.00
% deviation of median from known value
-0.06
0.10
Norm. dev. of median from known value
-0.01
0.02
2(2.4 %) More than 3 norm. S.D.
4(4.8 %) Between 2 and 3 norm. S.D. •
; 63(75.9 %) Within 1 norm. S.D.
of known value
14(16.9 %) Between 1 and 2 norm. S.D.
-------
/> --
4/7

ESD-LV Performance Evaluation: Iodine in Water,
6-Feb-1998

Iodine-131






\
Lab
Res. 1


Exper.
Rng anal

Normalized deviation
Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
A
107.2
106.9
107.1
0.15
0.017
107.07
0.22
0.36
AF
107.2
108.1
107.6
0.45
0.051
107.63
0.31
0.45
AJ
105.5
98.0
99.3
4.01
0.422
100.93
-0.79
-0.65
AK
107.6
107.8
109.3
0.93
0.096
108.23
0.41
0.55
AL
102.4
106.7
101.2
2.89
0.309
103.43
-0.38
-0.24
AP







»
AU
104.2
102.9
101.6
1.30
0.146
102.90
-0.47
-0.33
AW
96.4
102.7
96.1
3.73
0.371
98.40
-1.21
-1.07
AY








AZ
112.4
116.7
116.9
2.54
0.253
115.33
1.58
1.72
BA
115.0
114.0
111.0
2.08
0.225
113.33
1.25
1.39
BC
104.1
100.7
102.4
1.70
0.191
102.40
-0.55
-0.41
BH
109.0
107.0
113.0
3.06
0.338
109.67
0.65
0.79
BK
106.0
104.0
105.0
1.00
0.113
105.00
-0.12
0.02
BL
97.0
103.7
110.5
6.75
0.759
103.73
-0.33
-0.19
BM
108.6
105.6
108.4
1.68
0.169
107.53
0.30
0.43
BO
104.0
104.0
107.0
1.73
0.169
105.00
-0.12
0.02
C
103.0
102.0
104.0
1.00
0.113
103.00
-0.45
-0.31
CA
110.1
111.4
111.8
0.89
0.096
111.10
0.88
1.02
CC







•
CE
98.2
103.8
98.1
3.26
0.321
100.03
-0.94
-0.80
CJ
110.0
110.0
110.0
0.00
0.000
110.00
0.70
0.84
CP
116.6
116.7
104.3
7.13
0.698
112.53
1.12
1.26
cs







•
cx
103.3
100.0
104.2
2.21
0.236
102.50
-0.53
-0.40
D
108.9
107.2
110.1
1.46
0.163
108.73
0.49
0.63
DD
104.0
107.0
105.0
1.53
0.169
105.33
-0.07
0.07
DE
103.0
104.0
104.0
0.58
0.056
103.67
-0.34
-0.20
DR
107.0
107.0
111.0
2.31
0.225
108.33
0.43
0.57
DT
107.0
102.0
109.0
3.61
0.394
106.00
0.04
0.18
DY







•
E
103.2
107.4
98.9
4.25
0.478
103.17
-0.42
-0.29
EB
104.0
104.0
105.0
0.58
0.056
104.33
-0.23
-0.09
EH
122.0
92.0
105.0
15.04
2.310
106.33
0.10
0.24
EL
109.7
106.8
110.2
1.84
0.191
108.90
0.52
0.66
EX
94.3
107.0
92.2
8.01
0.833
97.83
-1.30
-1.17
FE







•
FL
109.0
106.0
112.0
3.00
0.338
109.00
0.54
0.68
GI
103.8
107.4
101.4
3.02
0.338
104.20
-0.25
-0.12
HE
111.1
120.7
116.8
4.83
0.540
116.20
1.73
1.86
HK
99.4
99.6
99.5
0.10
0.011
99.50
-1.03
-0.89
HP
122.0
111.0
110.0
6.66
0.675
114.33
1.42
1.56
I
107.1
102.9
104.5
2.12
0.236
104.83
-0.15
-0.01
LA







• -
IU
107.0
110.0
107.0
1.73
0.169
108.00
0.37
0.51
• = No data submitted

TAG SYMBOLS

ft = Above control limit
0 = Insufficient data
^	
X s
Determined to be an outlier
H = Below control limit
	4/
-------
ESD-LV Performance Evaluation: Iodine in Water, 6-Feb-1998	5 / 7
Iodine-131
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
\
Normalized deviation
(grand-avg) (known) Tag
J
JR








•
•
JS
117.0
120.0
119.0
1.53
0.169
118.67
2.13
2.27

JY
126.0
111.0
109.0
9.29
0.956
115.33
1.58
1.72

K
101.2
108.5
97.3
5.69
0.630
102.33
-0.56
-0.42

KL
106.7
106.8
103.7
1.76
0.174
105.73
0.00
0.14

KM
95.7
98.1
98.8
1.63
0.174
97.53
-1.35
-1.22

KX
100.0
101.0
101.0
0.58
0.056
100.67
-0.84
-0.70

L
103.7
102.7
100.2
1.80
0.197
102.20
-0.58
-0.45

LF
100.0
100.0
110.0
5.77
0.563
103.33
-0.40
-0.26

LT
104.0
104.0
107.0
1.73
0.169
105.00
-0.12
0.02

M
85.0
90.0
87.0
2.52
0.281
87.33
-3.04
-2.90

MN
100.0
106.0
101.0
3.21
0.338
102.33
-0.56
-0.42

MP
107.0
105.0
100.0
3.61
0.394
104.00
-0.29
-0.15

MV








• '
N
102.4
103.4
103.9
0.76
0.084
103.23
-0.41
-0.27

NJ
98.0
106.0
106.0
4.62
0.450
103.33
-0.40
-0.26

NO
84.4
93.2
102.1
8.85
0.996
93.23
-2.06
-1.92

O
110.0
107.0
109.0
1.53
0.169
108.67
0.48
0.62

OA
106.1
101.4
105.6
2.58
0.264
104.37
-0.23
-0.09

OB
110.6
111.6
103.3
4.53
0.467
108.50
0.46
0.59

OT
119.7
116.7
121.8
2.56
0.287
119.40
2.25
2.39

PB
104.5
102.7
105.0
1.21
0.129
104.07
-0.28
-0.14

PE








•
PW
108.0
96.0
110.0
7.57
0.788
104.67
-0.18
-0.04

Q
100.4
100.0
103.3
1.80
0.186
101.23
-0.74
-0.60

QX
101.2
95.8
96.5
2.94
0.304
97.83
-1.30
-1.17

QY
102.0
100.0
100.3
1.08
0.113
100.77
-0.82
-0.68

QZ
120.0
120.0
115.0
2.89
0.281
118.33
2.08
2.22

R
105.6
103.3
103.0
1.42
0.146
103.97
-0.29
-0.15

RK
110.0
117.0
115.0
3.61
0.394
114.00
1.36
1.50

S
101.4
103.1
105.1
1.85
0.208
103.20
•0.42
-0.28

sc








•
SD
106.6
107.9
109.0
1.20
0.135
107.83
0.35
0.48

SM
114.8
103.7
107.6
5.63
0.624
108.70
0.49
0.63

SS
99.0
104.8
109.5
5.26
0.591
104.43
-0.22
-0.08

sv
106.9
107.4
104.1
1.78
0.186
106.13
0.07
0.20

sz
108.6
103.5
106.8
2.59
0.287
106.30
0.09
0.23

TA
102.4
95.9
113.2
8.74
0.973
103.83
-0.31
-0.18

TC
76.1
67:5
76.7
5.15
0.518
73.43
-5.33
•5.19
X
TD
101.9
105.1
105.3
1.91
0.191
104.10
-0.27
-0.13

TF








•
TL








•
TQ
105.0
107.0
115.0
5.29
0.563
109.00
0.54
0.68
1
U
101.3
110.2
104.0
4.56
0.501
105.17
-0.09
0.04
j
• = No data submitted
0 = Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
If = Above control limit
II = Below control limit ,
-------
//	







	^
6/7
>
ESD-LV Performance Evaluation: Iodine in Water, 6-Feb-1998

/	
Iodine-131








Lab Res. 1


Exper.
Rng anal

Normalized deviation

Res. 2
Res. 3 Sigma
(R + SR)
Average (grand-avg) (known) Tag
UC







•
UI







•
UM







•
UP 108.0
106.0
110.0
2.00
0.225
108.00 0.37 0.51

UY 110.0
110.0
111.0
0.58
0.056
110.33 0.76 0.90

VA







•
VC







•
VM 100.0
100.0
100.0
0.00
0.000
100.00 -0.95 -0.81

VN 110.5
109.7
113.2
1.83
0.197
111.13 0.89 1.03

W







•
WM







*
WO 60.0
70.8
85.8 12.96
1.860
72.20 -5.53 -5.39
X
X 99.1
102.5
106.5
3.70
0.416
102.70 -0.50 -0.36

XK







•
XO







•
XQ







•
Y 111.0
102.0
103.0
4.93
0.506
105.33 -0.07 0.07



Data sorted by Laboratory Average

Average
Tag
Lab
Average

Tag
Lab
Average Tag
Lab
72.20
X
WO
103.23


N
106.13
SV
73.43
X
TC
103.33


NJ
106.30
sz
87.33

M
103.33


LF
106.33
EH
93.23

NO
103.43


AL
107.07
A
97.53

KM
103.67


DE
107.53
BM
97.83

QX
103.73


BL
107.63
AF
97.83

EX
103.83


TA
107.83
SD
98.40

AW
103.97


R
108.00
UP
99.50

HK
104.00


MP
108.00
IU
100.00

VM
104.07


PB
108.23
AK
100.03

CE
104.10


TD
108.33
DR
100.67

KX
104.20


GI
108.50
OB
100.77

QY
104.33


EB
108.67
O
100.93

AJ
104.37


OA
108.70 .
SM
101.23

Q
104.43


SS
108.73
D
102.20

L
104.67


PW
108.90
EL
102.33

MN
104.83


I
109.00
TQ
102.33

K
105.00


LT
109.00
FL
102.40

BC
105.00


BO
109.67
BH
102.50

CX
105.00


BK
110.00
CJ
102.70

X
105.17


U
110.33
UY
102.90

AU
105.33


Y
111.10
CA
103.00

C
105.33


DD
111.13
VN
103.17

E
105.73


KL
112.53
CP
103.20

S
106.00


DT
113.33
BA
• s No data submitted

TAG SYMBOLS

IT = Above control limit
0 s Insufficient data
v	

x - Determined to be an outlier
= Below control limit
		—			
-------
ESD-LV Performance Evaluation: Iodine in Water, 6-Feb-1998
7/7
Iodine-131
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
114.00

RK
115.33

JY
118.33

QZ
114.33

HP
115.33

AZ
118.67

JS



116.20

HE
119.40

OT
responding labs
Frequency distribution
% responding labs
-4	-2	0	+2	+4
Normalized deviation of the mean from the known value
Frequency distribution
10-


-4	-2	0	+2	+4
Normalized deviation of the mean from the grand average
+6
• = No data submitted
0 = Insufficient data
TAG SYMBOLS
x = Determined to be an outlier
ft = Above control limit
M h Below control limit
-------
United States	Office of Research and	EPA/600/R-98/061	-
Environmental Protection Development	May 1998
Agency	Washington, DC 20460
Uranium-Radium in Water
Performance Evaluation
Study
A Statistical Evaluation of the
February 13, 1998 Data
006EC898COV-061
-------
Uranium-Radium in Water
Performance Evaluation Study
February 13, 1998
Environmental Protection Agency
National Exposure Research Laboratory
Environmental Sciences Division
Las Vegas, Nevada
-------

UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
OFFICE OF RESEARCH AND DEVELOPMENT
NATIONAL EXPOSURE RESEARCH LABORATORY
ENVIRONMENTAL SCIENCES DIVISION-LAS VEGAS
P.O. BOX 93478
LAS VEGAS, NEVADA 89193-3478
(702/798-2100)
V/
Dear Participant,
Enclosed are the results of the Environmental Sciences Division (ESD-LV)
Performance Evaluation Study for Uranium-Radium in Water; February 13, 1998.
The known value for each analysis was determined by gravimetric methods,
checked by chemical analyses performed by ESD-LV's Radiochemistry Laboratory,
and compared to the participating laboratories' grand average.
The expected precision, determined by the known value, was taken from
"Table 3. Laboratory Precision: One Standard Deviation Values and Control Limits
for Various Analyses", which is based on data accumulated over the years by the
Performance Evaluation Program, and can be found in the Environmental Radioactivity
Performance Evaluation Studies Program and Radioactive Standards Distribution
Program information brochure.
Please take a few minutes to review this report and the analytical data your
laboratory submitted to us. If there are any apparent discrepancies, please notify us
immediately.
We encourage you to make use of the computer-automated data-entry system
that has been in place for some time now. As the number of participants increases,
and it becomes unrealistic for us to receive results by mail or FAX, the computer
system will be our only avenue for accepting data.
If you have any questions or comments, please send a message via the data-entry
system or contact Stephen Pia at 702/798-2102 or Patricia Honsa at 702/798-2141.
Sincerely,
Stephen Pia
Team Leader
RADQA Program
Enclosure
-------
NOTICE
This material has been funded wholly by
the U.S. Environmental Protection Agency.
It has been subjected to the Agency's review,
and has been approved for publication as
an EPA document.
-------
ft
ESD-LV Performance Evaluation: Uranium-Radium in Water, 13-Feb-1998 1/20
The following pages consist of separate sections for each of the nuclides in this study with four
parts per section. After the first, each part is separated from the next by a new page or a thick
horizontal bar. The first page of each section is a statistical summary for the nuclide and starts
with a statement of the known value, the control limits, and the warning limits.
The warning limits are placed at two normalized standard deviations above and below the
known value and the control limits are three normalized standard deviations above and below
the known value. If you keep control charts, these values will be useful for anticipating problems
with the accuracy of your analytical methods.
The coin shaped pie chart at the top of the summary page shows the fate of all the samples
sent out in number and percentage terms. The pie chart starts at the top and rotates clockwise.
The first sector represents those participants who submitted analytical results within both the
warning and control limits. The next sector represents those who are in the warning region but
not out of control. The third sector represents those who are out of control, but have passed
the outlier test. The fourth sector represents those who have failed the outlier test. The last
sector represents those participants who have failed to respond properly. This is the case if no
analytical results were returned, or less than three determinations were reported, or if the results
were received too late. The reeding on the edge of the coin is spaced at one percent intervals, and
the sector shading becomes darker as the data reliability decreases. Sectors with zero width are
not shown.
The table in the center shows a number of statistical quantities calculated from the submitted
data based on the mean and median values in relation to the known value, both before and after
outlier removal. The lower pie chart uses the same construction as the upper chart and shows
the distribution of properly submitted data in terms of deviation from the known value divided
into sectors representing one, two, three, and greater than three normalized standard deviations.
The second part is an alphabetical listing, in lab-code order, of submitted data and several
calculated quantities. An entry that is shaded has been rejected because of one of the reasons
listed above or failure of the outlier test. The fifth and sixth columns Eire a measure of laboratory
precision. The Range analysis is a normalized value that you may use to keep precision control
charts. The eighth and ninth columns are the differences from the mean of all non-outliers and
from the known value, respectively. If this value is between 2.0 and 3.0, your analytical process
precision is in the warning zone; if it exceeds 3.0 it is out of control. A tag symbol may appear in
the last column. Each page with tags has a symbol definition summary at the bottom. If there is
no tag symbol, the data is within the control limits, but it may be in the warning zone.
The third part is a three-column listing of result average, tag symbol, and lab-code in average
order excluding those labs not responding properly. In this order, all outliers and out-of-control
results appear at the top or bottom of the list.
The last part is two bar chart displays showing frequency distributions of responding
participants. The first chart places the known value at the center and a bar at each 0.2 unit of
expected precision. The second chart places the mean of the reported measurements at the center
and a bar at each 0.2 unit of standard deviation. In both cases, a bar includes those results within
0.1 unit up to the maximum of six. Any results more than six units from the center value are
shown cumulatively by a shaded bar one past the sixth unit. If the central tendency of the known
value distribution falls away from the center, an error in accuracy is indicated. If the distribution
is broad, poor precision is indicated. The mean value distribution is similar but uses the average
and standard deviation of reported results as its basis.
-------
2/20 ESD-LV Performance Evaluation: Uranium-Radium in Water, 13-Feb-1998
The Range Analysis(R + SR) is calculated from the range, mean range and standard error of
the rnnge values. The range is the difference between the maximum and minimum results for the
laboratory. The mean range is calculated by multiplying the expected precision by 1.693(for three
results). The standard error of the range is calculated by multiplying the mean range by 2.575(for
three results), subtracting the mean range from this product, and dividing the result by 3. If the
range is greater than the mean range, then the range analysis is calculated by subtracting the
mean range from the range, dividing the result by the standard error of the range and adding 1.
If the mean range is greater than or equal to the range, then the range analysis is calculated by
dividing the range by the mean range.
The normalized deviation of the mean from the grand average is calculated from the deviation
of the mean from the grand average and the standard error of the mean values. The deviation of
the mean from the grand average is calculated by subtracting the grand average from the
average of the laboratory's three results. The standard error of the mean is calculated by
dividing the expected precision by the square root of 3(the number of results). The normalized
deviation of the mean from the grand average is calculated by dividing the deviation of the mean
from the grand average by the standard error of the mean.
The normalized deviation of the mean from the known value is calculated from the deviation of
the mean from the known value and the standard error of the mean values. The deviation of the
mean from the known value is calculated by subtracting the known value from the average of the
laboratory's three results. The standard error of the mean is calculated by dividing the expected
precision by the square root of 3(the number of results). The normalized deviation of the mean
from the known value is calculated by dividing the deviation of the mean from the known value by
the standard error of the mean.
A complete explanation of the statistical calculations involved in the report may be found in
the Environmental Radioactivity Performance Evaluation Studies Program information brochure
[Draft Revision of EPA-600/4-81-004], available from Patricia Honsa, ESD-LV, 702/798-2141.
-------
ESD-LV Performance Evaluation: Uranium-Radium in Water, 13-Feb-1998 3/20
Uranium (Natural)	Statistical Summary	147 Participants
The known value of this nuclide is 32.0 pCi/1 with an expected precision of 3.0; the control limits
are 26.8 to 37.2; the warning regions are 26.8 to 28.5 and 35.5 to 37.2
42(28.6 °/o) Failed to respond
75(51.0 %) Within all limits
7(4.8 %) Outliers ' '
9(6.1 %) Out of control •'
but not an outlier
I ~
Statistic
l
Respondents
	14(9.5 %) In warning zone
but within control
Non-outliers
Mean
30.78
Grand Avg 31.27
Std. Dev.
5.09
3.00
Variance
25.93
8.97
% Coef. of Var.
16.54
9.58
% deviation of mean from known value
-3.81
-2.27
Norm. dev. of mean from known value
-0.24
-0.24
Median
31.10
31.22
% deviation of median from known value
-2.81
-2.45
Norm. dev. of median from known value
-0.18
-0.26
16(15.2 %) More than 3 norm. S.D. ,
14(13.3 %) Between 2 and 3 norm. S.D
; 54(51.4 %) Within 1 norm. S.D.
of known value
21(20.0 %) Between 1 and 2 norm. S.D.
-------
4/20 ESD-LV Performance Evaluation: Uranium-Radium in Water, 13-Feb-1998
Uranium (Natural)
Lab
Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
A
29.7
32.0
31.4
1.19
0.453
31.03
-0.14
-0.56
AE
32.4
34.3
33.7
0.97
0.374
33.47
1.27
0.85
AF
25.1
26.3
26.1
0.64
0.236
25.83
-3.14
-3.56 U
AH
19.8
19.8
20.7
0.52
0.177
20.10
-6.45
-6.87 x
AJ
24.4
29.4
27.8
2.55
0.984
27.20
-2.35
-2.77
AK
36.5
34.5
36.0
1.04
0.394
35.67
2.54
2.12
AL
36.0
37.1
37.2
0.67
0.236
36.77
3.17
2.75
AP
31.8
31.3
32.1
0.40
0.158
31.73
0.27
-0.15
AR
28.2
28.5
28.5
0.17
0.059
28.40
-1.66
-2.08
AU







•
AW
32.9
32.0
33.2
0.62
0.236
32.70
0.82
0.40
AZ
31.7
31.9
32.0
0.15
0.059
31.87
0.34
-0.08
BA
32.7
30.3
31.9
1.22
0.473
31.63
0.21
-0.21
BC
31.3
31.3
31.2
0.06
0.020
31.27
0.00
-0.42
BG







•
BH
32.2
30.0
33.7
1.86
0.728
31.97
0.40
-0.02
BK
32.3
36.0
33.4
1.90
0.728
33.90
1.52
1.10
BM
31.5
32.0
33.1
0.82
0.315
32.20
0.54
0.12
BN
21.2
22.9
18.8
2.06
0.807
20.97
-5.95
-6.37 x
BO
33.6
32.0
33.8
0.99
0.354
33.13
1.07
0.65
C
34.0
34.7
33.6
0.56
0.217
34.10
1.63
1.21
CA
26.8
25.9
24.7
1.05
0.413
25.80
-3.16
-3.58 11
CC







•
CE
34.4
33.8
33.1
0.65
0.256
33.77
1.44
1.02
CJ
27.0
28.0
26.0
1.00
0.394
27.00
-2.47
-2.89
CS
27.3
28.0
28.3
0.51
0.197
27.87
-1.97
-2.39
CX
35.0
36.4
35.3
0.74
0.276
35.57
2.48
2.06
D
31.2
33.2
30.4
1.44
0.551
31.60
0.19
-0.23
DB
27.3
27.3
28.0
0.40
0.138
27.53
-2.16
-2.58
DE
34.8
34.8
34.9
0.06
0.020
34.83
2.06
1.64
DI







•
DO
30.1
31.3
30.7
0.60
0.236
30.70
-0.33
-0.75
DR








DT
27.6
30.9
33.8
3.10
1.420
30.77
-0.29
-0.71
DZ
42.7
43.0
44.1
0.74
0.276
43.27
6.92
6.50 x
E
31.5
31.8
31.7
0.15
0.059
31.67
0.23
-0.19
EB
32.2
28.4
26.0
3.13
1.420
28.87
-1.39
-1.81
EL
28.4
29.1
29.1
0.40
0.138
28.87
-1.39
-1.81
EO







~
EP







•
ER
30.3
31.1
29.1
1.01
0.394
30.17
-0.64
-1.06
FE







•
FJ
30.1
31.1
32.9
1.42
0.551
31.37
0.05
-0.37
FN
38.0
39.0
38.0
0.58
0.197
38.33
4.08
3.66 n
GN
30.0
30.0
30.5
0.29
0.098
30.17
-0.64
-1.06
• =
No data submitted

TAG SYMBOLS

ft = Above control limit
0 s InsufTicient data	x = Determined to be an outlier	II =- Below control limit
-------
Cf	








	^

ESD-LV Performance Evaluation: Uranium-Radium in Water, 13-Feb-1998 5/20
Uranium (Natural)







Lab
Res. 1


Exper.
Rng anal

Normalized deviation

Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
GQ








•
HE
30.4
29.5
29.6
0.49
0.177
29.83
-0.83
-1.25

UK
32.8
26.3
31.5
2.32
0.88C
30.87
-0.23
-0.65

HL
37.1
35.8
32.6
2.32
0.886
35.17
2.25
1.83

HP
32.8
32.3
32.5
0.25
0.098
32.53
0.73
0.31

I
32.9
31.8
31.6
0.70
0.256
32.10
0.48
0.06

ID





1



J








•
JE
31.2
29.1
30.0
1.05
0.413
30.10
-0.68
-1.10

JG








~
JK
31.1
31.8
30.0
0.91
0.354
30.97
-0.18
-0.60

JN
29.3
28.7
27.9
0.70
0.276
28.63
-1.52
-1.94

JS
30.2
30.0
30.4
0.20
0.079
30.20
-0.62
-1.04

JX








• -
JY
30.8
33.4
32.0
1.30
0.512
32.07
0.46
0.04

K
33.0
32.9
33.4
0.26
0.098
33.10
1.05
0.64

KH
32.8
32.5
32.0
0.40
0.158
32.43
0.67
0.25

EL








" 9
KT
34.0
35.0
36.0
1.00
0.394
35.00
2.15
1.73

L
31.2
29.2
30.7
1.04
0.394
30.37
-0.52
-0.94

LF
29.6
31.6
30.5
1.00
0.394
30.57
-0.41
-0.83

LH








•
LT








•
LZ
30.0
30.0
29.0
0.58
0.197
29.67
-0.93
-1.35

M








9 -
MF








'9
MX
9.1
9.1
9.0
0.06
0.020
9.07
L2.82
-13.24
X
N
35.9
36.7
35.8
0.49
0.177
36.13
2.81
2.39

NA








•
NH
29.2
29.2
28.1
0.64
0.217
28.83
-1.41
-1.83

NJ
31.8
31.1
33.5
1.23
0.473
32.13
0.50
008

NK








•
NO
32.4
33.4
34.0
0.81
0.315
33.27
1.15
0.73

O








•
OB
31;2
31.7
30.4
0.66
0.256
311°.
•0.10
-0.52

OF




'




OS
33.3
28.2
31.1
2.56
1.008
30.87
•0.23
-0.65

OX





. '



p
53.0
49.4
42.4
5.39
3.071
48.27
9.81
9.39
X
PB
35.7
35.4
36.1
0.35
0.138
35.73
2.58
2.16

PG








•
PQ
32.0
32.8
31.9
0.49
0.177
32.23
0.55
0.13

PW
20.8
26.4
18.8
3.94
1.945
22.00
-5.35
-5.77

PX
32.4
32.0
32.9
0.45
0.177
32.43
0.67
0.25

Q
27.0
30.0
31.0
2.08
0.788
29.33
-1.12
-1.54

• =
No data submitted

TAG SYMBOLS

ft = Above control limit
[05
V"	—
Insufficient data
x =
Determined to be an outlier
U = Below control limit
-------
		 ^
6/20 ESD-LV Performance Evaluation: Uranium-Radium in Water, 13-Feb-1998
, 		
Uranium (Natural)







Lab
Res. 1


Exper.
Rng anal

Normalized deviation

Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
QM
27.7
27.4
28.2
0.40
0.158
27.77
-2.02
-2.44

QQ
32.6
32.0
30.8
0.92
0.354
31.80
0.30
-0.12

QU
33.8
33.5
36.8
1.82
0.650
34.70
1.98
1.56

QX
10.6
10.8
10.9
0.15
0.059
10.77
-11.84
-12.26
X
QZ
R
32.0
31.3
32.0
0.40
0.138
31.77
0.28
-0.13

RD
30.8
30.8
30.1
0.40
0.138
30.57
-0.41
-0.83
• ¦
RG
31.3
31.4
30.9
0.26
0.098
31.20
-0.04
-0.46

RK
27.3
30.2
27.6
1.59
0.571
28.37
-1.68
-2.10

RP
31.5
31.1
31.1
0.23
0.079
31.23
-0.02
-0.44

RR








•
RX
42.0
35.0
40.0
3.61
1.720
39.00
4.46
4.04
It
RZ
31.3
32.2
31.3
0.52
0.177
31.60
0.19
-0.23

S
27.8
28.4
28.2
0.31
0.118
28.13
-1.81
-2.23

SD
33.9
33.4
33.5
0.26
0.098
33.60
1.34
0.92

SF








•
SI
29.5
30.0
30.1
0.32
0.118
29.87
-0.81
-1.23

SL
13.6
15.0
15.5
0.98
0.374
14.70
-9.57
-9.99
X
SM
30.7
30.9
30.1
0.42
0.158
30.57
-0.41
-0.83

SO
29.9
28.2
28.6
0.89
0.335
28.90
-1.37
-1.79

ss
32.4
32.4
31.8
0.35
0.118
32.20
0.54
0.12

sx
29.8
31.2
30.2
0.72
0.276
30.40
-0.50
-0.92

sz
31.3
31.6
29.9
0.91
0.335
30.93
-0.20
-0.62

T
33.1
35.5
36.4
1.71
0.650
35.00
2.15
1.73

TD
31.2
30.9
31.2
0.17
0.059
31.10
-0.10
-0.52

TN








~
TQ
33.1
32.9
32.9
0.12
0.039
32.97
0.98
0.56

TS








•
U
30.2
31.0
31.0
0.46
0.158
30.73
-0.31
-0.73

UM








•
UP
29.0
31.0
31.1
1.18
0.413
30.37
-0.52
-0.94

UQ








•
UZ








•
VA








•
VH
41.5
39.9
38.3
1.60
0.630
39.90
4.98
4.56
It
VI
29.8
24.4
30.2
3.24
1.270
28.13
-1.81
-2.23

W
34.4
31.7
31.4
1.65
0.591
32.50
0.71
0.29

WC








•
WG








•
WH
27.4
23.3
26.4
2.14
0.807
25.70
-3.22
-3.64

WI
31.0
30.6
31.0
0.23
0.079
30.87
-0.23
-0.65

WJ
30.0
31.6
31.6
0.92
0.315
31.07
-0.12
-0.54
II
WO
26.4
26.9
25.9
0.50
0.197
26.40
-2.81
-3.23
WR
31.6
32.3
33.7
1.07
0.413
32.53
0.73
0.31
11
WX
21.6
21.9
23.0
0.74
0.276
22.17
-5.26
-5.68
• H
No data submitted

TAG SYMBOLS

ft = Above control limit
hi
s
Insufficient data
x =
Determined to be an outlier
s Below control limit
			->J
-------
ESD-LV Performance Evaluation: Uranium-Radium in Water, 13-Feb-1998 7/20

Uranium (Natural)
Exper. Rng anal	Normalized deviation
Lab Res. 1	Res. 2	Res. 3 Sigma (R + SR) Average (grand-avg) (known) Tag
X
XA
XC
XD
XI
XK
XL
XM
XO
XQ
XR
Y
33.6
34.2
30.4
30.9
27.7
31.1
2.95
1.85
1.308
0.650
30.57
32.07
-0.41
0.46
-0.83
0.04
31.5
30.8
32.0
32.0
30.3
32.7
32.4
30.6
31.8
0.45
0.25
0.47
0.177
0.098
0.177
31.97
30.57
32.17
0.40
-0.41
0.52
-0.02
-0.83
0.10
Data sorted by Laboratory Average
• -
• - .
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
9.07
X
MX
30.17

GN
31.67

E
10.77
X
QX
30.17

ER
31.73

AP
14.70
X
SL
30.20

JS
31.77

QZ
20.10
X
AH
30.37

UP
31.80

QQ
20.97
X
BN
30.37

L
31.87

AZ
22.00
u
PW
30.40

SX
31.97

XL
22.17
U
WX
30.57

XM
31.97

BH
25.70
11
WH
30.57

X
32.07

XA
25.80
U
CA
30.57

RD
32.07

JY
25.83
U
AF
30.57

SM
32.10

I
26.40
ii
WO
30.57

LF
32.13

NJ
27.00

CJ
30.70

DO
32.17

Y
27.20

AJ
30.73

U
32.20

SS
27.53

DB
30.77

DT
32.20

BM
27.77

QM
30.87

WI
32.23

PQ
27.87

CS
30.87

OS
32.43

PX
28.13

VI
30.87

HK
32.43

KH
28.13

S
30.93

SZ
32.50

W
28.37

RK
30.97

JK
32.53

WR
28.40

AR
31.03

A
32.53

HP
28.63

JN
31.07

WJ
32.70

AW
28.83

NH
31.10

TD
32.97

TQ
28.87

EL
31.10

OB
33.10

K
28.87

EB
31.20

RG
33.13

BO
28.90

SO
31.23

RP
33.27

NO
29.33

Q
31.27

BC
33.47

AE
29.67

LZ
31.37

FJ
33.60

SD
29.83

HE
31.60

RZ
33.77

CE
29.87

SI
31.60

D
33.90

BK
30.10

JE
31.63

BA
34.10

C
• s No data submitted
0 s Insufficient data
TAG SYMBOLS
= Determined to be an outlier
ft = Above control limit
= Below control limit
-------
8 / 20 ESD-LV Performance Evaluation: Uranium-Radium in Water, 13-Feb-1998
Uranium (Natural)
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
34.70

QU
35.57

CX
38.33
ft
FN
34.83

DE
35.67

AK
39.00
ft
RX
35.00

T
35.73

PB
39.90
ft
VH
35.00

KT
36.13

N
43.27
X
DZ
35.17

HL
36.77

AL
48.27
X
P
% responding labs
Frequency distribution
10-
T-
-4
JL

HByHi
nT	.	.	.	.	.
-2	0	+2
Normalized deviation of the mean from the known value
+4
+6
% responding labs	Frequency distribution
10- —
BIBB		y p	?	pL
-4	-2	0	+2	+4	+6
Normalized deviation of the mean from the grand average
• = No data submitted	TAG SYMBOLS	It = Above control limit
0 = Insufficient data	x = Determined to be an outlier	11 s Below control limit
^	x
-------
ESD-LV Performance Evaluation: Uranium-Radium in Water, 13-Feb-1998 9/20
Radium-226	Statistical Summary	147 Participants
The known value of this nuclide is 16.0 pCi/1 with an expected precision of 2.4; the control limits
are 11.8 to 20.2; the warning regions are 11.8 to 13.2 and 18.8 to 20.2
Statistic
Respondents
Non-outliers
Mean
17.54
Grand Avg 16.05
Std. Dev.
8.78
1.67
Variance
77.00
2.80
% Coef. of Var.
50.02
10.42
% deviation of mean from known value
9.65
0.32
Norm. dev. of mean from known value
0.18
0.03
Median
15.93
15.88
% deviation of median from known value
-0.42
-0.73
Norm. dev. of median from known value
-0.01
-0.07
9(9.0 %) More than 3 norm. S.D.
.59(59.0 %) Within 1 norm. S.D.
5	of known value
' * * *
8(8.0 %) Between 2 and 3 norm. S
.D. '
24(24.0 %) Between 1 and 2 norm. S.D.
-------
-
10/20 ESD-LV Performance Evaluation: Uranium-Radium in Water, 13-Feb-1998
	^
Radium-226








Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation

Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
A
16.0
13.2
15.8
1.56
0.689
15.00
-0.76
-0.72

AE
15.3
15.6
15.9
0.30
0.148
15.60
-0.33
-0.29

AF
15.5
15.7
16.1
0.31
0.148
15.77
-0.21
-0.17

AH
13.7
13.5
13.9
0.20
0.098
13.70
-1.70
-1.66

AJ
43.4
46.0
35.7
5.36
3.924
41.70
18.51
18.55
X
AK
14.6
15.2
14.5
0.38
0.172
14.77
-0.93
-0.89

AL
13.8
15.4
16.0
1.14
0.541
15.07
-0.71
-0.67

AP
17.9
19.4
19.0
0.78
0.369
18.77
1.96
2.00

AR








•
AU
7.9
8.8
8.4
0.45
0.222
8.37
-5.55
-5.51
X
AW
16.4
15.3
14.0
1.20
0.591
15.23
-0.59
-0.55

AZ
15.1
13.3
16.9
1.80
0.886
15.10
-0.69
-0.65

BA
16.1
17.9
19.0
1.46
0.714
17.67
1.17
1.20

BC
13.3
13.3
13.3
0.00
0.000
13.30
-1.99
-1.95

BG








•
BH
15.5
14.9
16.1
0.60
0.295
15.50
-0.40
-0.36

BK
16.0
16.5
16.7
0.36
0.172
16.40
0.25
0.29

BM
16.1
16.3
16.1
0.12
0.049
16.17
0.08
0.12

BN
13.1
14.6
16.4
1.65
0.812
14.70
-0.98
-0.94

BO
16.0
15.8
16.3
0.25
0.123
16.03
-0.01
0.02

C
16.5
17.0
18.7
1.15
0.541
17.40
0.97
1.01

CA
15.1
16.1
13.6
1.26
0.615
14.93
-0.81
-0.77

CC








•
CE
16.4
16.1
15.4
0.51
0.246
15.97
-0.06
-0.02

CJ
15.0
15.0
14.0
0.58
0.246
14.67
-1.00
-0.96

CS
17.2
15.9
18.1
1.11
0.541
17.07
0.73
0.77

cx








•
D








•
DB
17.7
17.2
16.6
0.55
0.271
17.17
0.80
0.84

DE
15.4
15.4
15.5
0.06
0.025
15.43
-0.45
-0.41

DI








•
DO








•
DR








•
DT
14.4
14.0
15.5
0.78
0.369
14.63
-1.02
-0.99

DZ
16.0
14.8
15.8
0.64
0.295
15.53
-0.37
-0.34

E
18.5
20.1
19.4
0.80
0.394
19.33
2.37
2.41

EB
14.2
14.3
14.4
0.10
0.049
14.30
-1.26
-1.23

EL
16.1
17.5
16.8
0.70
0.345
16.80
0.54
0.58

EO
15.0
15.4
13.9
0.78
0.369
14.77
-0.93
-0.89

EP








•
ER
16.3
16.1
16.1
0.12
0.049
16.17
0.08
0.12

FE








•
FJ








•
FN
17.8
18.2
17.4
0.40
0.197
17.80
1.26
1.30

GN
15.3
14.3
16.3
1.00
0.492
15.30
-0.54
-0.51

• =
No data submitted

TAG SYMBOLS

It = Above control limit
[0-
Insufficient data
x =
Determined to be an outlier
JJ- = Below control limit
		
-------
ESD-LV Performance Evaluation: Uranium-Radium in Water, 13-Feb-1998 11/20
Radium-226
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
GQ








•
HE
14.6
15.3
16.2
0.80
0.394
15.37
-0.49
-0.46

HK
15.9
15.6
14.7
0.62
0.295
15.40
-0.47
-0.43

HL
17.1
17.0
16.2
0.49
0.222
16.77
0.52
0.55

HP
15.3
14.9
16.0
0.56
0.271
15.40
-0.47
-0.43

I
19.9
18.5
17.1
1.40
0.689
18.50
1.77
1.80

ID
j
11.8
128
12.8
0.58
0.246
12.47
-2.59
-2.55

JE
17.5
17.8
18.1
0.30
0.148
17.80
1.26
1.30
•
JG








•
JK









JN








•
JS
15.4
15.2
14.4
0.53
0.246
15.00
-0.76
-0.72

JX
16.7
15.3
16.2
0.71
0.345
16.07
0.01
0.05

JY
19.3
19.5
17.6
1.04
0.468
18.80
1.98-
2.02

K
16.4
15.7
16.8
0.56
0.271
16.30
0.18
0.22

KH
14.2
14.3
14.5
0.15
0.074
14.33
-1.24
-1.20

KL
18.1
19.8
18.8
0.85
0.418
18.90
2.06
2.09

KT








•
L
11.5
11.9
12.8
0.67
0.320
12.07
-2.88
-2.84

LF








•
LH








•
LT
13.4
11.5
13.8
1.23
0.566
12.90
-2.27
-2.24

LZ
14.1
13.1
13.1
0.58
0.246
13.43
-1.89
-1.85

M
13.5
14.5
13.4
0.61
0.271
13.80
-1.63
-1.59

MF








•
MX
25.4
21.5
23.2
1.96
0.960
23^37
5.28
5.32
X
N
16.6
15.7
16.4
0.47
0.222
16.23
0.13
0.17

NA








•
NH
15.9
15.5
15.0
0.45
0.222
15.47
-0.42
-0.38

NJ
16.6
18.3
21.1
2.27
1.205
18.67
1.89
1.92

NK








•
NO
14.8
17.1
18.2
1.73
0.837
16.70
0.47
0.51

O
16.9
18.2
17.1
0.70
0.320
17.40
0.97
1.01

OB








*
OF








«
OS








•
OX
16.7
16.1
16.1
0.35
0.148
16.30
0.18
0.22

P
15.6
17.8
19.1
1.77
0.861
17.50
1.05
1.08

PB
16.8
17.2
16.5
0.35
0.172
16.83
0.56
0.60

PG








•
PQ








•
PW
15.5
16.2
17.2
0.85
0.418
16.30
0.18
0.22

PX
17.1
16.4
16.4
0.40
0.172
16.63
0.42
0.46

Q
20.1
20.8
23.2
1.63
0.763
21.37
3.84
3.87
ft
• =
0 s
No data submitted
Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
ft = Above control limit
JJ- = Below control limit
-------
12/20 ESD-LV Performance Evaluation: Uranium-Radium in Water, 13-Feb-1998
Radium-226
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
QM
16.2
15.3
16.8
0.75
0.369
16.10
0.03
0.07
QQ
19.6
17.2
18.4
1.20
0.591
18.40
1.69
1.73
QU
13.4
13.3
14.4
0.61
0.271
13.70
-1.70
-1.66
QX
9.0
5.8
7.8
1.62
0.788
7.53
-6.15
-6.11 x
QZ
18.4
18.1
15.4
1.65
0.738
17.30
0.90
0.94
R
13.9
16.1
12.4
1.86
0.911
14.13
-1.38
-1.35
RD
70.2
56.6
61.3
6.91
5.471
62.70
33.67.
33.70 x
RG







•
RK
14.2
12.5
13.4
0.85
0.418
13.37
-1.94
-1.90
RP







•
RR







•
RX
7.7
5.0
10.0
2.50
1.439
7.57
-6.12
-6.09 x
RZ
15.9
15.6
15.1
0.40
0.197
15.53
-0.37
-0.34
S
16.1
16.1
15.8
0.17
0.074
16.00
-0.04
0.00
SD
16.4
14.1
14.5
1.23
0.566
15.00
-0.76
-0.72
SF







•
SI
18.9
19.1
18.9
0.12
0.049
18.97
2.10
214
SL







•
SM
18.6
18.0
18.0
0.35
0.148
18.20
1.55
1.59
SO







•
ss
15.7
15.1
15.6
0.32
0.148
15.47
-0.42
-0.38
sx
16.1
17.3
15.5
0.92
0.443
16.30
0.18
0.22
sz
16.9
16.5
17.0
0.26
0.123
16.80
0.54
0.58
T
15.7
16.0
15.9
0.15
0.074
15.87
-0.13
-0.10
IT)
15.4
15.4
15.5
0.06
0.025
15.43
-0.45
-0.41
TN
14.7
14.7
14.8
0.06
0.025
14.73
-0.95
-0.91
TQ
16.2
15.7
15.8
0.26
0.123
15.90
-0.11
-0.07
TS







•
U
17.8
17.9
17.6
0.15
0.074
17.77
1.24
1.27
UM







•
UP
15.4
15.9
16.1
0.36
0.172
15.80
-0.18
-0.14
UQ
15.9
15.9
16.1
0.12
0.049
15.97
-0.06
-0.02
uz







~
VA







•
VH
13.9
17.1
14.3
1.74
0.788
15.10
-0.69
-0.65
VI
16.9
16.7
17.7
0.53
0.246
17.10
0.76
0.79
w
16.2
15.1
15.8
0.56
0.271
15.70
-0.25
-0.22
wc
15.9
21.5
18.3
2.81
1.720
18.57
1.81
1.85
WG







~
WH
15.0
16.1
16.2
0.67
0.295
15.77
-0.21
-0.17
WI






- '
•
WJ
15.9
15.6
15.7
0.15
0.074
15.73
-0.23
-0.19
WO
1.9.9
19.2
19.8
0.38
0.172
19.63
2.58
2.62
WR







•
WX
69.0
62.0
75.0
6.51
5.189
. 68.67-
37.97
38.01 x
• = No data submitted TAG SYMBOLS tt = Above control limit
[0s Insufficient data	x - Determined to be an outlier	^ = Below control limit
-------
ESD-LV Performance Evaluation: Uranium-Radium in Water, 13-Feb-1998 13 / 20
Radium-226
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
X
13.9
14.2
14.0
0.15
0.074
14.03
-1.46
-1.42
XA
18.1
16.7
17.5
0.70
0.345
17.43
1.00
1.03
XC







•
XD







•
XI







•
XK







• •
XL
14.9
15.9
16.8
0.95
0.468
15.87
-0.13
-0.10
XM
57.2
60.2
55.6
2.34
1.252
57.67
30.03
30.07 x
xo







*
XQ







*
XR







~
Y
16.3
16.5
16.3
0.12
0.049
16.37
0.23
0.26
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
7.53
X
QX
15.30

GN
16.30

SX
7.57
X
RX
15.37

HE
16.30

PW
8.37
X
AU
15.40

HP
16.30

OX
12.07

L
15.40

HK
16.37

Y
12.47

ID
15.43

TD
16.40

BK
12.90

LT
15.43

DE
16.63

PX
13.30

BC
15.47

SS
16.70

NO
13.37

RK
15.47

NH
16.77

HL
13.43

LZ
15.50

BH
16.80

SZ
13.70

QU
15.53

RZ
16.80

EL
13.70

AH
15.53

DZ
16.83

PB
13.80

M
15.60

AE
17.07

CS
14.03

X
15.70

W
17.10

VI
14.13

R
15.73

WJ
17.17

DB
14.30

EB
15.77

AF
17.30

QZ
14.33

KH
15.77

WH
17.40

O
14.63

DT
15.80

UP
17.40

C
14.67

CJ
15.87

XL
17.43

XA
14.70

BN
15.87

T
17.50

P
14.73

TN
15.90

TQ
17.67

BA
14.77

EO
15.97

UQ
17.77

U
14.77

AK
15.97

CE
17.80

JE
14.93

CA
16.00

S
17.80

FN
15.00

SD
16.03

BO
18.20

SM
15.00

JS
16.07

JX
18.40

QQ
15.00

A
16.10

QM
18.50

I
15.07

AL
16.17

ER
18.57

wc
15.10

VH
16.17

BM
18.67

NJ
15.10

AZ
16.23

N
18.77

AP
15.23

AW
16.30

K
18.80

JY
• = No data submitted
0 = Insufficient data

TAG SYMBOLS
x = Determined to be an outlier

= Above control limit
3 Below control limit
-------
(r
14/20 ESD-LV Performance Evaluation: Uranium-Radium in Water, 13-Feb-1998
Radium-226
Data sorted by Laboratory Average
Average Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
18.90
KL
19.63

WO
41.70
X
AJ
18.97
SI
21.37
ft
Q
57.67
X
XM
19.33
E
23.37
X
MX
62.70
X
RD





68.67
X
WX
% responding labs

Frequency distribution




10-
¦qi ¦
-6
% responding labs
i	— tj,r
fh|t
E»fl -Blf—
+4
-4	-2	0	+2
Normalized deviation of the mean from the known value
Frequency distribution
+6
10-
-y-Bwa1
filift.
¦¦if ¦

T-
+4
—T"
+6
-6
-4	-2	0	+2
Normalized deviation of the mean from the grand average
• = No data submitted
0 = Insufficient data
TAG SYMBOLS
x = Determined to be an outlier
ft = Above control limit
= Below control limit
-------
ESD-LV Performance Evaluation: Uranium-Radium in Water, 13-Feb-1998 15 / 20
Radium-228	Statistical Summary	147 Participants
The known value of this nuclide is 33.3 pCi/1 with an expected precision of 8.3; the control limits
are 18.9 to 47.7; the warning regions are 18.9 to 23.7 and 42.9 to 47.7
57(38.8 %) Failed to respond ;
3(2.0 %) Outliers
74(50.3 %) Within all limits
1 (0.7 %) Out of control

-- 12(8.2 %) In warning zone
but not an outlier
|
i i
but within control
Statistic
Respondents
Non-outliers
Mean
31.72
Grand Avg 31.89
Std. Dev.
7.61
5.93
Variance
57.89
35.12
% Coef. of Var.
23.98
18.59
% deviation of mean from known value
-4.74
-4.25
Norm. dev. of mean from known value
-0.21
-0.24
Median
31.70
31.73
% deviation of median from known value
-4.80
-4.70
Norm. dev. of median from known value
-0.21
-0.26
4(4.4 %) More than 3 norm. S.D. *
12(13.3 %) Between 2 and 3 norm. S
. 57(63.3 %) Within 1 norm. S.D.
of known value
17(18.9 %) Between 1 and 2 norm. S.D.
-------
16/20 ESD-LV Performance Evaluation: Uranium-Radium in Water, 13-Feb-1998
Radium-228
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
A
32.8
34.5
35.2
1.23
0.171
34.17
0.48
0.18
AE
33.3
33.5
32.4
0.59
0.078
33.07
0.25
-0.05
AF
36.4
35.5
37.5
l.UU
0.142
36.47
0.96
0.66
AH
26.9
26.1
26.9
0.46
0.057
26.63
-1.10
-1.39
AJ
30.9
32.3
30.2
1.07
0.149
31.13
-0.16
-0.45
AK
20.7
20.8
22.2
0.84
0.107
21.23
-2.22
-2.52
AL
33.9
36.0
31.4
2.30
0.327
33.77
0.39
0.10
AP
35.3
33.4
31.4
1.95
0.278
33.37
0.31
0.01
AR







•
AU
21.7
22.3
16.7
3.07
0.399
20.23
-2.43
-2.73
AW
36.5
36.9
38.0
0.78
0.107
37.13
1.10
0.80
AZ
31.5
33.7
32.3
1.11
0.157
32.50
0.13
-0.17
BA
39.6
43.1
39.4
2.08
0.263
40.70
1.84
1.54
BC
36.0
36.1
37.2
0.67
0.085
36.43
0.95
0.65
BG







•
BH
34.1
37.0
40.9
3.41
0.484
37.33
1.14
0.84
BK
33.8
34.5
32.8
0.85
0.121
33.70
0.38
0.08
BM
36.4
35.2
38.8
1.83
0.256
36.80
1.03
0.73
BN







•
BO
36.6
33.2
31.6
2.55
0.356
33.80
0.40
0.10
C
33.0
34.5
35.7
1.35
0.192
34.40
0.52
0.23
CA
32.2
31.8
28.7
1.92
0.249
30.90
-0.21
-0.50
CC







•
CE
26.5
32.6
29.6
3.05
0.434
29.57
-0.48
-0.78
CJ
32.0
30.0
34.0
2.00
0.285
32.00
0.02
-0.27
CS
40.0
41.1
40.6
0.55
0.078
40.57
181
1.52
CX







, •
D







•
DB
28.1
29^2
30.7
1.31
0.185
29.33
-0.53
-0.83
DE
24.5
24.5
24.6
0.06
0.007
24.53
-1.53
-1.83
DI







v •
DO







•
DR







«
DT
24.8
28.2
27.4
1.78
0.242
26.80
-1.06
-1.36
DZ
31.2
30.9
30.0
0.62
0.085
30.70
-0.25
-0.54
E
33.6
33.3
32.3
0.68
0.093
33.07.
0.25
-0.05
EB
31.0
31.4
32.8
0.95
0.128
31.73
-0.03
-0.33
EL
32.2
34.3
34.6
1.31
0.171
33.70
0.38
0.08
EO
32.6
29.0
29.0
2.08
0.256
30.20
-0.35
-0.65
EP







•
ER







•
FE







•
FJ







, •
FN
39.1
39.4
36.7
1.48
0.192
38.40
1.36
1.06
GN
: • - '
¦ -V'





~
• s No data submitted TAG SYMBOLS ft s Above control limit
0 = Insufficient data	x = Determined to be an outlier	11 = Below control limit
-------
	Yl
ESD-LV Performance Evaluation: Uranium-Radium in Water, 13-Feb-1998 17/20
Radium-228
Lab Re 3. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
GQ








•
HE
25.8
24.9
24.3
0.75
0.107
25.00
-1.44
-1.73

KK
24.5
22.S
29.d
3.71
0.505
. / 3
-1.28
-1.53

HL
30.6
29.1
29.6
0.76
0.107
29.77
-0.44
-0.74

HP
31.2
25.7
30.1
2.91
0.391
29.00
-0.60
-0.90

I
35.4
37.0
32.2
2.44
0.342
34.87
0.62
0.33

ID
j
23.1
27.7
29.1
3.14
0.427
26.63
-1.10
-1.39

JE
34.1
33.1
33.6
0.50
0.071
33.60
0.36
0.06
' •
JG








•
. JK








•
JN








•
JS
29.1
28.2
28.3
0.49
0.064
28.53
-0.70
-0.99

JX
28.3
30.1
27.3
1.42
0.199
28.57
-0.69
-0.99

JY
43.8
45.6
39.8
2.97
0.413
43.07
2.33
2.04

K
39.9
45.4
50.9
5.50
0.783
45.40
2.82
2.53

KH
30.3
29.5
29.5
0.46
0.057
29.77
-0.44
-0.74

KL
40.0
40.9
38.4
1.27
0.178
39.77
1.64
1.35

?KT








/•
L
31.4
32.8
30.7
1.07
0.149
31.63
-0.05
-0.35

:rLF







<. ....
' •
Ilh









LT
51.0
45.9
50.6
2.84
0.363
49.17
3.6i
3.31
It
-LZ








' •
M
34.4
35.4
34.8
0.50
0.071
34.87
0.62
0.33

-MF








•
MX
32.3
31.7
33.1
0.70
0.100
32.37
0.10
-0.19

N
28.0
28.3
26.1
1.19
0157
27.47
-0.92
-1.22

•NA








4 '
NH
31.5
34.6
30.4
2.18
0.299
32.17
0.06
-0.24

N.J
32.0
34.0
32.0
1.15
0.142
32.67
0.16
-0.13

NK:








9 -
NO
27.7
31.4
32.6
2.55
0.349
30.57
-0.28
-0.57

O
22.9
22.9
20.7
1.27
0.157
22.17
-2.03
-2.32

OB








•
OF








•
OS








#
OX
33.4
34.0
34.0
0.35
0.043
33.80
0.40
0.10

P
44.1
46.8
48.8
2.36
0.334
46.57
3.06
2.77

PB
32.2
32.0
32.4
0.20
0.028
32.20
0.07
-0.23

PG:








* .~
PQ








• '
PW
32.8
33.7
32.6
0.59
0.078
33.03
0.24
-0.06

PX'








" •
Q
38.6
39.4
39.8
0.61
0.085
39.27
1.54
1.25

• s No data submitted TAG SYMBOLS	It = Above control limit
0 s Insufficient data	 x = Determined to be an outlier	= Below control limit
-------
18/20 ESD-LV Performance Evaluation: Uranium-Radium in Water, 13-Feb-1998
Radium-228
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
QM








~
QQ








•
QU
22.9
21.6
24.3
1.35
0.192
22.93
-1.87
-2.16

QX
21.5
18.9
20.5
1.31
0.185
20.30
-2.42
-2.71

QZ
30.5
32.9
30.9
1.29
0.171
31.43
-0.09
-0.39

R








•
RD
30.6
29.2
27.1
1.76
0.249
28.97
-0.61
-0.90

RG








•
RK
10.7
10.5
10.7
0.12
0.014
10.63
-4.43
-4.73
X
RP








•
RR








•
RX
30.0
31.5
32.0
1.04
0.142
31.17
-0.15
-0.45

RZ
33.0
33.5
32.7
0.40
0.057
33.07
0.25
-0.05

S
30.7
31.7
31.9
0.64
0.085
31.43
-0.09
-0.39

SD
37.8
36.8
38.9
1.05
0.149
37.83
1.24
0.95

SF








•
SI
28.4
26.9
26.3
1.08
0.149
27.20
-0.98
-1.27

SL








•
SM
30.2
32.0
32.7
1.29
0.178
31.63
-0.05
-0.35

SO








~
ss
35.0
35.1
33.0
1.18
0.149
34.37
0.52
0.22

sx
25.0
30.2
21.7
4.29
0.605
25.63
-1.30
-1.60

sz
51.5
42.4
48.9
4.69
0.648
47.60
3.28
2.98

T
36.2
37.1
36.8
0.46
0.064
36.70
1.00
0.71

TD
18.6
23.6
22.7
2.67
0.356
21.63
-2.14
-2.43

TN
29.9
32.6
35.7
2.90
0.413
32.73
0.18
-0.12

TQ
33.5
33.6
33.9
0.21
0.028
33.67
0.37
0.08

TS








•
U
30.2
30.3
30.6
0.21
0.028
30.37
-0.32
-0.61

UM








•
UP
36.4
32.6
33.0
2.09
0.270
34.00
0.44
0.15

UQ
36.2
34.5
37.0
1.28
0.178
35.90
0.84
0.54

UZ









VA








•
VH
26.9
24.7
23.3
1.81
0.256
24.97
-1.44
-1.74

VI
31.9
35.4
27.7
3.86
0.548
31.67
-0.05
-0.34

W








•
WC
5.4
7.0
6.7
0.85
0.114
6.37
-5.33
-5.62

WG









WH
29.2
29.6
30.6
0.72
0.100
29.80
-0.44
-0.73

WI








•
WJ
26.0
23.8
28.4
2.30
0.327
26.07
-1.21
-1.51

WO
28.6
28.2
27.3
0.67
0.093
28.03
-0.80
-1.10

WR
18.8
21.2
25.6
3.45
0.484
21.87
-2.09
-2.39

WX
56.0
72.0
64.0
8.00
1.264
64.00
6.70
6.41
X
• =
0 =
No data submitted
Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
It = Above control limit
U = Below control limit
-------
ESD-LV Performance Evaluation: Uranium-Radium in Water, 13-Feb-1998 19 / 20
Radivun-228
Lab
Res. 1
Res. 2
Res. 3
Exper. Rng anal	Normalized deviation
Sigma (R + SR) Average (grand-avg) (known) Tag
X
XA
xc
XD
XI
XK
XL
XM
XO
XQ
XR
Y
20.2
19.0
22.8
1.94
0.270
20.67
-2.34
-2.64
29.2
30.8
29.6
28.5
30.0
33.1
0.40
2.30
0.057
0.327
29.60
30.80
-0.48
-0.23
-0.77
-0.52
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
6.37
X
WC
29.77

HL
33.70

EL
10.63
X
RK
29.80

WH
33.70

BK
20.23

AU
30.20

EO
33.77

AL
20.30

QX
30.37

U
33.80

OX
20.67

X
30.57

NO
33.80

BO
21.23

AK
30.70

DZ
34.00

UP
21.63

TD
30.80

XM
34.17

A
21.87

WR
30.90

CA
34.37

ss
22.17

O
31.13

AJ
34.40

c
22.93

QU
31.17

RX
34.87

M
24.53

DE
31.43

S
34.87

I
24.97

VH
31.43

QZ
35.90

UQ
25.00

HE
31.63

SM
36.43

BC
25.63

sx
31.63

L
36.47

AF
25.73

HK
31.67

VI
36.70

T
26.07

WJ
31.73

EB
36.80

BM
26.63

ID
32.00

CJ
37.13

AW
26.63

AH
32.17

NH
37.33

BH
26.80

DT
32.20

PB
37.83

SD
27.20

SI
32.37

MX
38.40

FN
27.47

N
32.50

AZ
39.27

Q
28.03

WO
32.67

NJ
39.77

KL
28.53

JS
32.73

TN
40.57

CS
28.57

JX
33.03

PW
40.70

BA
28.97

RD
33.07

E
43.07

JY
29.00

HP
33.07

RZ
45.40

K
29.33

DB
33.07

AE
46.57

P
29.57

CE
33.37

AP
47.60

SZ
29.60

XL
33.60

JE
49.17
ft
LT
29.77

KH
33.67

TQ
64.00
X
WX
• = No data submitted
0 = Insufficient data
TAG SYMBOLS
x = Determined to be an outlier
ft = Above control limit
h= Below control limit
-------
20 / 20 ESD-LV Performance Evaluation: Uranium-Radium in Water, 13-Feb-1998
v
*	— •••	¦¦	—	.i ¦ ¦. — ¦ ¦	.	——		—	— --.i
Radium-228
% responding labs	Frequency distribution
10
\	1	I	I	I	•	I	I	V	I	I	I	I
-6	-4	-2	0	+2	+4	+6
Normalized deviation of the mean from the known value
_n_
-E-
nnn m
% responding labs
Frequency distribution
10-
-r-
-6
-JB-
-J3L.
UK
idUL
-4	-2	0	+2	+4
Normalized deviation of the mean from the grand average
+6
-------
United States	Office of Research and
Environmental Protection Development
Agency	Washington, DC 20460
EPA/600/R-98/062
May 1998
Tritium in Water Performance
Evaluation Study
A Statistical Evaluation of the
March 13,1998 Data
006EC898COV462
-------
Tritium in Water
Performance Evaluation Study
March 13, 1998
Environmental Protection Agency
National Exposure Research Laboratory
Environmental Sciences Division
Las Vegas, Nevada
-------

UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
OFFICE OF RESEARCH AND DEVELOPMENT
NATIONAL EXPOSURE RESEARCH LABORATORY
ENVIRONMENTAL SCIENCES DIVISION-LAS VEGAS
P.O. BOX 93478 '
LAS VEGAS. NEVADA 89193-3478
(702/798-2100)

Dear Participant,
Enclosed are the results of the Environmental Sciences Division (ESD-LV)
Performance Evaluation Study for Tritium in Water; March 13, 1998.
The known value for each analysis was determined by gravimetric methods,
checked by chemical analyses performed by ESD-LV's Radiochemistry Laboratory,
and compared to the participating laboratories' grand average.
The expected precision, determined by the known value, was taken from
'Table 3. Laboratory Precision: One Standard Deviation Values and Control Limits
for Various Analyses", which is based on data accumulated over the years by the
Performance Evaluation Program, and can be found in the Environmental Radioactivity
Performance Evaluation Studies Program and Radioactive Standards Distribution
Program information brochure.
Please take a few minutes to review this report and the analytical data your
laboratory submitted to us. If there are any apparent discrepancies, please notify us
immediately.
We encourage you to make use of the computer-automated data-entry system
that has been in place for some time now. As the number of participants increases,
and it becomes unrealistic for us to receive results by mail or FAX, the computer
system will be our only avenue for accepting data.
If you have any questions or comments, please send a message via the data-entry
system or contact Stephen Pia at 702/798-2102 or Patricia Honsa at 702/798-2141.
Stephen Pia
Team Leader
RADQA Program
Enclosure
-------
NOTICE
This material has been funded wholly by
the U.S. Environmental Protection Agency.
It has been subjected to the Agency's review,
and has been approved for publication as
an EPA document.
-------
ESD-LV Performance Evaluation: Tritium in Water, 13-Mar-1998	1/9
The following pages consist of separate sections for each of the nuclides in this study with four
parts per section. After the first, each part is separated from the next by a new page or a thick
horizontal bar. The first page of each section is a statistical summary for the nuclide and starts
with a statement of the known value, the control limits, and the warning limits.
The warning limits are placed at two normalized standard deviations above and below the
known value and the control limits are three normalized standard deviations above and below
the known value. If you keep control charts, these values will be useful for anticipating problems
with the accuracy of your analytical methods.
The coin shaped pie chart at the top of the summary page shows the fate of all the samples
sent out in number and percentage terms. The pie chart starts at the top and rotates clockwise,
The first sector represents those participants who submitted analytical results within both the
warning and control limits. The next sector represents those who are in the warning region but
not out of control. The third sector represents those who are out of control, but have passed
the outlier test. The fourth sector represents those who have failed the outlier test. The last
sector represents those participants who have failed to respond properly. This is the case if no
analytical results were returned, or less than three determinations were reported, or if the results
were received too late. The reeding on the edge of the coin is spaced at one percent intervals, and
the sector shading becomes darker as the data reliability decreases. Sectors with zero width are
not shown.
The table in the center shows a number of statistical quantities calculated from the submitted
data based on the mean and median values in relation to the known value, both before and after
outlier removal. The lower pie chart uses the same construction as the upper chart and shows
the distribution of properly submitted data in terms of deviation from the known value divided
into sectors representing one, two, three, and greater than three normalized standard deviations.
The second part is an alphabetical listing, in lab-code order, of submitted data and several
calculated quantities. An entry that is shaded has been rejected because of one of the reasons
listed above or failure of the outlier test. The fifth and sixth columns are a measure of laboratory
precision. The Range analysis is a normalized value that you may use to keep precision control
charts. The eighth and ninth columns are the differences from the mean of all non-outliers and
from the known value, respectively. If this value is between 2.0 and 3.0, your analytical process
precision is in the warning zone; if it exceeds 3.0 it is out of control. A tag symbol may appear in
the last column. Each page with tags has a symbol definition summary at the bottom. If there is
no tag symbol, the data is within the control limits, but it may be in the warning zone.
The third part is a three-column listing of result average, tag symbol, and lab-code in average
order excluding those labs not responding properly. In this order, all outliers and out-of-control
results appear at the top or bottom of the list.
The last part is two bar chart displays showing frequency distributions of responding
participants. The first chart places the known value at the center and a bar at each 0.2 unit of
expected precision. The second chart places the mean of the reported measurements at the center
and a bar at each 0.2 unit of standard deviation. In both cases, a bar includes those results within
0.1 unit up to the maximum of six. Any results more than six units from the center value are
shown cumulatively by a shaded bar one past the sixth unit. If the central tendency of the known
value distribution falls away from the center, an error in accuracy is indicated. If the distribution
is broad, poor precision is indicated. The mean value distribution is similar but uses the average
and standard deviation of reported results as its basis.
-------
2/9
ESD-LV Performance Evaluation: Tritium in Water, 13-Mar-1998
The Range Analysis(R + SR) is calculated from the range, mean range and standard error of
the range values. The range is the difference between the maximum and minimum results for the
laboratory. The mean range is calculated by multiplying the expected precision by 1.693(.for three
results). The standard error of the range is calculated by multiplying the mean range by 2.575(for
three results), subtracting-the mean range from this product, and dividing the result by 3. If the
range is greater than the mean range, then the range analysis is calculated by subtracting the
mean range from the range, dividing the result by the standard error of the range and adding 1.
If the mean range is greater than or equal to the range, then the range analysis is calculated by
dividing the range by the mean range.
The normalized deviation of the mean from the grand average is calculated from the deviation
of the mean from the grand average and the standard error of the mean values. The deviation of
the mean from the grand average is calculated by subtracting the grand average from the
average of the laboratory's three results. The standard error of the mean is calculated by
dividing the expected precision by the square root of 3(the number of results). The normalized
deviation of the mean from the grand average is calculated by dividing the deviation of the mean
from the grand average by the standard error of the mean.
The normalized deviation of the mean from the known value is calculated from the deviation of
the mean from the known value and the standard error of the mean values. The deviation of the
mean from the known value is calculated by subtracting the known value from the average of the
laboratory's three results. The standard error of the mean is calculated by dividing the expected
precision by the square root of 3(the number of results). The normalized deviation of the mean
from the known value is calculated by dividing the deviation of the mean from the known value by
the standard error of the mean.
A complete explanation of the statistical calculations involved in the report may be found in
the Environmental Radioactivity Performance Evaluation Studies Program information brochure
[Draft Revision of EPA-600/4-81-004], available from Patricia Honsa, ESD-LV, 702/798-2141.
-------
ESD-LV Performance Evaluation: Tritium in Water, 13-Mar-1998	3/9
Tritium	Statistical Summary	182 Participants
The known value of this nuclide is 2155.0 pCi/1 with an expected precision of 348.0; the control limits
are 1551.2 to 2758.8; the warning regions are 1551.2 to 1752.2 and 2557.8 to 2758.8
Statistic	Respondents	Non-outliers
Mean
2407.23
Grand Avg 2159.47
Std. Dev.
1804.38
234.20
Variance
3255782.36
54849.07
% Coef. of Var.
74.96
10.85
% deviation of mean from known value
11.70
0.21
Norm. dev. of mean from known value
0.14
0.02
Median
2147.67
2136.00
% deviation of median from known value
-0.34
-0.88
Norm. dev. of median from known value
0.00
-0.08
-------
4/9	ESD-LV Performance Evaluation: Tritium in Water, 13-Mar-1998
k,			
Tritium
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
A
2145.0
2089.0
2257.0
85.54
0.285
2163.67
0.02
0.04
AE
2047.0
2148.0
2118.0
51.87
0.171
2104.33
-0.27
-0.25
AF
2148.0
2237.0
. 2203.0
44.91
0.151
2196.00
0.18
0.20
AH
2111.0
2082.0
2063.0
24.17
0.081
2085.33
-0.37
-0.35
AI
2236.0
3164.0
2666.0
464.42
2.095
2688.67
2.63
2.66
AJ
2027.0
2103.0
2351.0
169.44
0.550
2160.33
0.00
0.03
AK
2150.0
2168.0
2081.0
45.92
0.148
2133.00
-0.13
-0.11
AP







•
AU
1660.0
1840.0
1820.0
98.66
0.306
1773.33
-1.92
-1.90
AW
2097.0
2122.0
2111.0
12.53
0.042
2110.00
-0.25
-0.22
AY
2174.0
2269.0
2382.0
104.13
0.353
2275.00
0.58
0.60
AZ
2420.0
2186.0
2480.0
155.34
0.499
2362.00
1.01
1.03
BA
2366.0
2349.0
2230.0
74.10
0.231
2315.00
0.77
0.80
BB
2120.0
2130.0
2130.0
5.77
0.017
2126.67
-0.16
-0.14
BC
1900.0
2040.0
1970.0
70.00
0.238
1970.00
-0.94
-0.92
BG







•
BL
2212.0
2171.0
2215.0
24.58
0.075
2199.33
0.20
0.22
BM
2200.0
2060.0
2110.0
70.95
0.238
2123.33
-0.18
-0.16
BO
2120.0
2070.0
2110.0
26.46
0.085
2100.00
-0.30
-0.27
BW







•
C
2083.0
2047.0
2076.0
19.09
0.061
2068.67
-0.45
-0.43
CA
2151.0
2047.0
2193.0
75.16
0.248
2130.33
-0.15
-0.12
CC







•
CE
2240.0
2060.0
2170.0
90.74
0.306
2156.67
-0.01
0.01
CJ
1800.0
1800.0
1900.0
57.74
0.170
1833.33
-1.62
-1.60
CO
1840.0
1980.0
1870.0
73.71
0.238
1896.67
-1.31
-1.29
CP
2286.0
2263.0
2158.0
68.24
0.217
2235.67
0.38
0.40
CS
2188.0
2290.0
1975.0
160.73
0.535
2151.00
-0.04
-0.02
CX
2080.0
1930.0
1760.0
160.10
0.543
1923.33
-1.18
-1.15
D
2098.0
2137.0
2176.0
39.00
0.132
2137.00
-0.11
-0.09
DD
2000.0
2240.0
2005.0
137.14
0.407
2081.67
-0.39
-0.36
DE
2175.0
2183.0
2187.0
6.11
0.020
2181.67
0.11
0.13
DH
2163.0
2107.0
2173.0
35.57
0.112
2147.67
-0.06
-0.04
DI







*
DR
2037.0
2135.0
2144.0
59.35
0.182
2105.33
-0.27
-0.25
DT
2200.0
2300.0
2400.0
100.00
0.339
2300.00
0.70
0.72
DY







•
E
1974.0
2011.0
2168.0
103.00
0.329
2051.00
-0.54
-0.52
EA







•
EB
1952.0
2036.0
2030.0
46.86
0.143
2006.00
-0.76
-0.74
EH
1490.0
1980.0
1940.0
272.09
0.832
1803.33
-1.77
-1.75
EL
2147.0
2095.0
2044.0
51.50
0.175
2095.33
-0.32
-0.30
EW
2263.0
2132.0
2406.0
137.04
0.465
2267.00
0.54
0.56
EX
2318.0
2341.0
2345.0
14.57
0.046
2334.67
0.87
0.89
FE







•
• =
0 s
No data submitted
Insufficient data
x ==
TAG SYMBOLS
Determined to be an outlier
ft = Above control limit
it = Below control limit
-------
ESD-LV Performance Evaluation: Tritium in Water, 13-Mar-1998	5/9
Tritium
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known)
Tag
FJ
2060.0
1950.0
2120.0
86.22
0.289
2043.33
-0.58
-0.56

FL
2155.0
2020.0
2345.0
163.27
0.552
2173.33
0.07
0.09

GO

•






*
GQ
2100.0
2100.0
2200.0
57.74
0.170
2133.33
-0.13
-0.11

m
2066.0
2107.0
2078.0
21.08
0.070
2083.67
-0.38
-0.36

HK
2115.0
2146.0
2276.0
85.42
0.273
2179.00
0.10
0.12

HP
2280.0
2220.0
2040.0
124.90
0.407
2180.00
0.10
0.12

HR
2228.0
2245.0
2232.0
8.89
0.029
2235.00
0.38
0.40

I
2640.0
2770.0
2533.0
118.69
0.402
2647.67
2.43
2.45

IA







#
IU
j
1775.0
1893.0
1757.0
73.87
0.231
1808.33
-1.75
-1.73

JE
1732.0
1858.0
1451.0
208.36
0.691
1680.33
-2.38
-2.36
•
JK
2004.0
2351.0
2111.0
177.70
0.589
2155.33
-0.02
0.00

JM
2142.0
2032.0
2084.0
55.03
0.187
2086.00
-0.37.
-0.34

JN
2219.0
2015.0
2278.0
138.00
0.446
2170.67
0.06
0.08

JP
2172.0
2293.0
2091.0
101.66
0.343
2185.33
0.13
0.15

JR








•
JS
2427.0
2437.0
2298.0
77.53
0.236
2387.33
1.13
1.16

JY
2270.0
1870.0
2430.0
288.44
0.950
2190.00
0.15
0.17

K
2084.0
1864.0
1941.0
111.64
0.373
1963.00
-0.98
-0.96

KH
2196.0
2176.0
2173.0
12.50
0.039
2181.67
0.11
0.13

EM
1061.0
1084.0
1311.0
138.18
0.424
1152.00
-5.01
-4.99
X
KX
2080.0
2160.0
2130.0
40.41
0.136
2123.33
-0.18
-0.16

L
2055.0
2135.0
2017.0
60.23
0.200
2069.00
-0.45
-0.43

LE








•
LF
2100.0
2200.0
2200.0
57.74
0.170
2166.67
0.04
0.06

LR
2280.0
2222.0
2122.0
79.92
0.268
2208.00
0.24
0.26

LT
2190.0
2570.0
2380.0
190.00
0.645
2380.00
1.10
1.12

M
2616.0
2519.0
2713.0
97.00
0.329
2616.00
2.27
2.29

MN
2505.0
2545.0
2615.0
55.68
0.187
2555.00
1.97
1.99

MT
1752.0
1758.0
1768.0
8.08
0.027
1759.33
-1.99
-1.97

MV
1914.0
2526.0
2122.0
311.19
1.074
2187.33
0.14
0.16

N
1985.0
2100.0
2210.0
112.51
0.382
2098.33
-0.30
-0.28

NB
4116.0
4005.0
4051.0
55.78
0.188
4057.33
9.45
9.47
X
NH
2188.0
2191.0
2201.0
6.81
0.022
2193.33
0.17
0.19

NJ
2042.0
2129.0
2210.0
84.02
0.285
2127.00
-0.16
-0.14

NK








•
NO
3276.0
3458.0
3541.0
135.55
0.450
3425.00
6.30
6.32
X
NP
2206.0
1994.0
2155.0
110.65
0.360
2118.33
-0.20
-0.18

O
2082.0
2256.0
2061.0
107.04
0.331
2133.00
-0.13
-0.11

OA
1900.0
2000.0
2000.0
57.74
0.170
1966.67
-0.96
-0.94

OK
2320.0
2383.0
2239.0
72.19
0.244
2314.00
0.77
0.79

OM
2070.0
2070.0
2250.0
103.92
0.306
2130.00
-0.15
-0.12

OT
2345.0
2193.0
2735.0
279.57
0.920
2424.33
1.32
1.34

S •
hi "1
No data submitted
Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
ff = Above control limit
II = Below control limit
-------
6/9
v.	
ESD-LV Performance Evaluation: Tritium in Water, 13-Mar-1998
Tritium
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
OX








~
PB
2128.0
2117.0
2163.0
24.02
0.078
2136.00
-0.12
-0.09

PD
17036.0
10446.0
-13741.0
3295.00
20.401
13741.00
57.64
57.67
X
PE








•
PM
2250.0
2196.0
2178.0
37.47
0.122
2208.00
0.24
0.26

Q
2067.0
2311.0
2402.0
173.23
0.569
2260.00
0.50
0.52

QC
2190.0
1970.0
2190.0
127.02
0.373
2116.67
-0.21
-0.19

QD
2364.0
2280.0
2212.0
76.14
0.258
2285.33
0.63
0.65

QI
2306.0
2405.0
2500.0
97.01
0.329
2403.67
1.22
1.24

QM
2090.0
1902.0
2038.0
97.08
0.319
2010.00
-0.74
-0.72

QP
2532.0
2467.0
2365.0
84.18
0.283
2454.67
1.47
1.49

QQ
2366.0
2388.0
2327.0
30.89
0.104
2360.33
1.00
1.02

QT
2858.0
2326.0
2177.0
358.00
1.297
2453.67
1.46
1.49

QU
2655.0
2924.0
1941.0
508.01
2.273
2506.67
1.73
1.75

QW
2458.0
2536.0
2614.0
78.00
0.265
2536.00
1.87
1.90

ox
1700.0
1774.0
1610.0
82.13
0.278
1694.67
-2.31
-2.29

Qz
2226.0
2131.0
2016.0
105.16
0.356
2124.33
-0.17
-0.15

R
2064.0
2110.0
2025.0
42.55
0.144
2066.33
-0.46
-0.44

RB
2000.0
2050.0
2000.0
28.87
0.085
2016.67
-0.71
-0.69

KK
20256.0
22997.0
17521.0
2738.00
16.799
20258.00
90.08
90.10
X
RO








•
RR
2122.0
2356.0
2367.0
138.38
0.416
2281.67
0.61
0.63

RU
2067.0
2169.0
1983.0
93.15
0.316
2073.00
-0.43
-0.41

RX
2379.0
2491.0
3014.0
338.94
1.148
2628.00
2.33
2.35

S
2181.0
2242.0
2104.0
69.15
0.234
2175.67
0.08
0.10

SD
2300.0
2200.0
2285.0
53.93
0.170
2261.67
0.51
0.53

SF
2050.0
2110.0
2200.0
75.50
0.255
2120.00
-0.20
-0.17

SI
2450.0
2240.0
2160.0
149.78
0.492
2283.33
0.62
0.64

SM
2134.0
2033.0
1958.0
88.32
0.299
2041.67
-0.59
-0.56

SN
1970.0
1967.0
1970.0
1.73
0.005
1969.00
-0.95
-0.93

ss
2300.0
2400.0
2300.0
57.74
0.170
2333.33
0.87
0.89

su
2100.0
2128.0
1824.0
168.02
0.516
2017.33
-0.71
-0.69

sv
2401.0
2280.0
1611.0
425.50
1.649
2097.33
-0.31
-0.29

sz
2048.0
2053.0
2289.0
137.72
0.409
2130.00
-0.15
-0.12

T
1917.0
1810.0
1929.0
65.52
0.202
1885.33
-1.36
-1.34

TA








•
TC
2559.0
2122.0
2086.0
263.31
0.803
2255.67
0.48
0.50

TD
2632.0
2550.0
2549.0
47.64
0.141
2577.00
2.08
2.10

TF








*
TL








«
TN
2308.0
2012.0
2050.0
161.05
0.502
2123.33
-0.18
-0.16

TO
2145.0
1864.0
2050.0
142.93
0.477
2019.67
-0.70
-0.67

TQ
2060.0
2000.0
1850.0
108.17
0.356
1970.00
-0.94
-0.92

TU
4316.0
2241.0
3196.0
1038.59
5.804
3251.00
5.43
5.45
X
TX








~
• =
0-
No data submitted
Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
1T = Above control limit
11 = Below control limit

-------
If 	
ESD-LV Performance Evaluation: Tritium in Water, 13-Mar-1998

	^
7/9
Tritium







\
Lab
Res. 1


Exper.
Rng anal

Normalized deviation

Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Taz
U
2090.0
2020.0
2060.0
35.12
0.119
2056.67
-0.51
-0.49

uc








•
UI








•
UK
2970.0
2750.0
2790.0
117.19
0.373
2836.67
3.37
3.39

UM








•
UP
2561.0
2578.0
2694.0
72.38
0.226
2611.00
2.25
2.27

UT








•
UX








•
UY
1864.0
1934.0
2037.0
87.02
0.294
1945.00
-1.07
-1.05

VA








•
VC
2230.0
2004.0
2203.0
123.43
0.384
2145.67
-0.07
-0.05

VE








•
VI
1776.0
2013.0
1699.0
163.65
0.533
1829.33
-1.64
-1.62

VM
2618.0
2039.0
2339.0
289.56
0.983
2332.00
0.86
0.88

VN-








•
VP
2550.0
2650.0
2750.0
100.00
0.339
2650.00
2.44
2.46

VR
1098.0
2266.0
2837.0
886.41
4.717
2067.00
-0.46
-0.44

VW
1889.0
1852.0
1872.0
18.52
0.063
1871.00
-1.44
-1.41

VZ
2164.0
1695.0
2633.0
469.00
2.128
2164.00
0.02
0.04

W
2070.0
2070.0
2060.0
5.77
0.017
2066.67
-0.46
-0.44

WD
1993.0
1892.0
1892.0
58.31
0.171
1925.67
-1.16
-1.14

WH
2340.0
2826.0
2652.0
246.24
0.825
2606.00
2.22
2.24

WJ








~
WO
2190.0
2610.0
1890.0
361.66
1.423
2230.00
0.35
0.37

WP
2523.0
2341.0
2877.0
272.56
0.910
2580.33
2.09
2.12

WR
2289.0
2029.0
2324.0
161.17
0.501
2214.00
0.27
0.29

WS
5300.0
4400.0
4700.0
458.26
2.005
4800.00
13.14
13.16
X
WT
1602.0
1052.0
2681.0
828.69
4.362
1778.33
-1.90
-1.87

WV
1760.0
1600.0
1790.0
102.14
0.322
1716.67
-2.20
-2.18

WW
2250.0
2347.0
2238.0
59.77
0.185
2278.33
0.59
0.61

WX
2000.0
1900.0
2000.0
57.74
0.170
1966.67
-0.96
-0.94

WZ
1997.0
1943.0
2048.0
52.51
0.178
1996.00
-0.81
-0.79

X
1800.0
2000.0
1800.0
115.47
0.339
1866.67
-1.46
-1.44

XB
2425.0
1555.0
1600.0
489.82
1.908
1860.00
-1.49
-1.47

XC
2439.0
2809.0
2399.0
226.05
0.696
2549.00
1.94
1.96

XD
1596.0
1583.0
1541.0
28.75
0.093
1573.33
-2.92
-2.90

XE
2847.0
2908.0
3283.0
236.09
0.740
3012.67
4.26
4.27
X
XF
3019.0
2485.0
2399.0
335.90
1.100
2634.33
2.36
2.39

XG
2165.0
2174.0
2255.0
49.57
0.153
2198.00
0.19
0.21

XH
2180.0
2455.0
2477.0
165.49
0.504
2370.67
1.05
1.07

XI








•
XK








*
XM
1043.0
1707.0
1505.0
340.38
1.242
1418.33
-3.69
-3.67

XO








•
XQ








•
• =
No data submitted

TAG SYMBOLS

ft = Above control limit
l®-
Insufficient data
x =
Determined to be an outlier
s Below control limit
-------
rr-
8/9
ESD-LV Performance Evaluation: Tritium in Water, 13-Mar-1998
Tritium
Lab Res. 1
Exper. Rng anal	Normalized deviation
Res. 2	Res. 3	Sigma (R + SR) Average (grand-avg) (known) Tag
XR
Y 2061.0
2127.0
2135.0
40.61
0.126
2107.67
-0.26
-0.24


Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
1152.00
X
KM
2068.67

C
2166.67

LF
1418.33
n
XM
2069.00

L
2170.67

JN
1573.33

XD
2073.00

RU
2173.33

FL
1680.33

JE
2081.67

DD
2175.67

S
1694.67

QX
2083.67

HI
2179.00

HK
1716.67

wv
2085.33

AH
2180.00

HP
1759.33

MT
2086.00

JM
2181.67

KH
1773.33

AU
2095.33

EL
2181.67

DE
1778.33

WT
2097.33

SV
2185.33

JP
1803.33

EH
2098.33

N
2187.33

MV
1808.33

IU
2100.00

BO
2190.00

JY
1829.33

VI
2104.33

AE
2193.33

NH
1833.33

CJ
2105.33

DR
2196.00

AF
1860.00

XB
2107.67

Y
2198.00

XG
1866.67

X
2110.00

AW
2199.33

BL
1871.00

VW
2116.67

QC
2208.00

PM
1885.33

T
2118.33

NP
2208.00

LR
1896.67

CO
2120.00

SF
2214.00

WR
1923.33

CX
2123.33

TN
2230.00

WO
1925.67

WD
2123.33

KX
2235.00

HR
1945.00

UY
2123.33

BM
2235.67

CP
1963.00

K
2124.33

QZ
2255.67

TC
1966.67

WX
2126.67

BB
2260.00

Q
1966.67

OA
2127.00

NJ
2261.67

SD
1969.00

SN
2130.00

SZ
2267.00

EW
1970.00

TQ
2130.00

OM
2275.00

AY
1970.00

BC
2130.33

CA
2278.33

WW
1996.00

WZ
2133.00

O
2281.67

RR
2006.00

EB
2133.00

AK
2283.33

SI
2010.00

QM
2133.33

GQ
2285.33

QD
2016.67

RB
2136.00

PB
2300.00

DT
2017.33

SU
2137.00

D
2314.00

OK
2019.67

TO
2145.67

VC
2315.00

BA
2041.67

SM
2147.67

DH
2332.00

VM
2043.33

FJ
2151.00

CS
2333.33

SS
2051.00

E
2155.33

JK
2334.67

EX
2056.67

U
2156.67

CE
2360.33

QQ
2066.33

R
2160.33

AJ
2362.00

AZ
2066.67

W
2163.67

A
2370.67

XH
2067.00

VR
2164.00

VZ
2380.00

LT
• s No data submitted
0 = Insufficient data
TAG SYMBOLS
x = Determined to be an outlier
ft = Above control limit
•U s Below control limit
-------
Tritium
ESD-LV Performance Evaluation: Tritium in Water, 13-Mar-1998
Data sorted by Laboratory Average
9/9
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
2387.33

JS
2577.00

TD
2688.67

AI
2403.67

Qi
2580.33

WP
2836.67
1t
UK
2424.33

OT
2606.00

WH
3012.67
X
XE
2453.67

QT
2611.00

UP
3251.00
X
TU
2454.67

QP
2616.00

M
3425.00
X
NO
2506.67

QU
2628.00

RX
4057.33
X
NB
2536.00

QW
2634.33

XF
4800.00
X
WS
2549.00

xc
2647.67

I
13741.00
X
PD
2555.00

MN
2650.00

VP
20258.00
X
RK
% responding labs
Frequency distribution
io-
i ¦

— 	r"
-4	-2	0	+2	+4
Normalized deviation of the mean from the known value
Frequency distribution
F5
—r-
+6
% responding labs
10-
0—r
-6
a

-4	-2	0	+2	+4
Normalized deviation of the mean from the grand average
+6
• = No data submitted
0 = Insufficient data
TAG SYMBOLS
x = Determined to be an outlier
It s Above control limi
U s Below control limi
-------
United States	Office of Research and	EPA/600/R-98/121A
Environmental Protection	Development	September 1998
Agency	Washington, DC 20460
&EPA Blind-A Performance
Evaluation Study
A Statistical Evaluation
of the April 21,1998 Data
006ECB98-I2U
-------
Blind-A
Performance Evaluation Study
April 21, 1998
Environmental Protection Agency
National Exposure Research Laboratory
Environmental Sciences Division
Las Vegas, Nevada
-------

UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
OFFICE OF RESEARCH AND DEVELOPMENT
NATIONAL EXPOSURE RESEARCH LABORATORY
ENVIRONMENTAL SCIENCES DIVISION-LAS VEGAS
P.O. BOX 93478
LAS VEGAS, NEVADA 89193-3478
(702/798-2100)

Dear Participant,
Enclosed are the results of the Environmental Sciences Division (ESD-LV)
Performance Evaluation Study for Blind-A; April 21, 1998.
The known value for each analysis was determined by gravimetric methods,
checked by chemical analyses performed by ESD-LV's Radiochemistry Laboratory,
and compared to the participating laboratories' grand average.
The expected precision, determined by the known value, was taken from
'Table 3. Laboratory Precision: One Standard Deviation Values and Control Limits
for Various Analyses", which is based on data accumulated over the years by the
Performance Evaluation Program, and can be found in the Environmental Radioactivity
Performance Evaluation Studies Program and Radioactive Standards Distribution
Program information brochure.
Please take a few minutes to review this report and the analytical data your
laboratory submitted to us. If there are any apparent discrepancies, please notify us
immediately.
We encourage you to make use of the computer-automated data-entry system
that has been in place for some time now. As the number of participants increases,
and it becomes unrealistic for us to receive results by mail or FAX, the computer
system will be our only avenue for accepting data.
If you have any questions or comments, please send a message via the data-entry
system or contact Stephen Pia at 702/798-2102 or Patricia Honsa at 702/798-2141.
Stephen Pia
Team Leader
RADQA Program
Enclosure
-------
NOTICE
This material has been funded wholly by
the U.S. Environmental Protection Agency.
It has been subjected to the Agency's review,
and has been approved for publication as
an EPA document.
-------
ESD-LV Performance Evaluation: Blind-A, 21-Apr-199B
1/30
The following pages consist of separate sections for each of the nuclides in this study with four
parts per section. After the first, each part is separated from the next by a new page or a thick
horizontal bar. The first page of each section is a statistical summary for the nuclide and starts
with a statement of the known value, the control limits, and the warning limits.
The warning limits are placed at two normalized standard deviations above and below the
known value and the control limits are three normalized standard deviations above and below
the known value. If you keep control charts, these values will be useful for anticipating problems
with the accuracy of your analytical methods.
The coin shaped pie chart at the top of the summary page shows the fate of all the samples
sent out in number and percentage terms. The pie chart starts at the top and rotates clockwise.
The first sector represents those participants who submitted analytical results within both the
warning and control Limits. The next sector represents those who are in the warning region but
not out of control. The third sector represents those who are out of control, but have passed
the outlier test. The fourth sector represents those who have failed the outlier test. The last
sector represents those participants who have failed to respond properly. This is the case if no
analytical results were returned, or less than three determinations were reported, or if the results
were received too late. The reeding on the edge of the coin is spaced at one percent intervals, and
the sector shading becomes darker as the data reliability decreases. Sectors with zero width are
not shown.
The table in the center shows a number of statistical quantities calculated from the submitted
data based on the mean and median values in relation to the known value, both before and after
outlier removal. The lower pie chart uses the same construction as the upper chart and shows
the distribution of properly submitted data in terms of deviation from the known value divided
into sectors representing one, two, three, and greater than three normalized standard deviations.
The second part is an alphabetical listing, in lab-code order, of submitted data and several
calculated quantities. An entry that is shaded has been rejected because of one of the reasons
listed above or failure of the outlier test. The fifth and sixth columns are a measure of laboratory
precision. The Range analysis is a normalized value that you may use to keep precision control
charts. The eighth and ninth columns are the differences from the mean of all non-outliers and
from the known value, respectively. If this value is between 2.0 and 3.0, your analytical process
precision is in the warning zone; if it exceeds 3.0 it is out of control. A tag symbol may appear in
the last column. Each page with tags has a symbol definition summary at the bottom. If there is
no tag symbol, the data is within the control limits, but it may be in the warning zone.
The third part is a three-column listing of result average, tag symbol, and lab-code in average
order excluding those labs not responding properly. In this order, all outliers and out-of-control
results appear at the top or bottom of the list.
The last part is two bar chart displays showing frequency distributions of responding
participants. The first chart places the known value at the center and a bar at each 0.2 unit of
expected precision. The second chart places the mean of the reported measurements at the center
and a bar at each 0.2 unit of standard deviation. In both cases, a bar includes those results within
0.1 unit up to the maximum of six. Any results more than six units from the center value are
shown cumulatively by a shaded bar one past the sixth unit. If the central tendency of the known
value distribution falls away from the center, an error in accuracy is indicated. If the distribution
is broad, poor precision is indicated. The mean value distribution is similar but uses the average
and standard deviation of reported results as its basis.
-------
2/30	ESD-LV Performance Evaluation: Blind-A, 21-Apr-1998
f					 		N
The Range Analyais(R + SR) is calculated from the range, mean range and standard error of
the range values. The range is the difference between the maximum and minimum results for the
laboratory. The mean range is calculated by multiplying the expected precision by 1.693(for three
results). The standard error of the range is calculated by multiplying the mean range by 2.575(for
three results), subtracting the mean range from this product, and dividing the result by 3. If the
range is greater than the mean range, then the range analysis is calculated by subtracting the
mean range from the range, dividing the result by the standard error of the range and adding 1.
If the mean range is greater than or equal to the range, then the range analysis is calculated by
dividing the range by the mean range.
The normalized deviation of the mean from the grand average is calculated from the deviation
of the mean from the grand average and the standard error of the mean values. The deviation of
the mean from the grand average is calculated by subtracting the grand average from the
average of the laboratory's three results. The standard error of the mean is calculated by
dividing the expected precision by the square root of 3(the number of results). The normalized
deviation of the mean from the grand average is calculated by dividing the deviation of the mean
from the grand average by the standard error of the mean.
The normalized deviation of the mean from the known value is calculated from the deviation of
the mean from the known value and the standard error of the mean values. The deviation of the
mean from the known value is calculated by subtracting the known value from the average of the
laboratory's three results. The standard error of the mean is calculated by dividing the expected
precision by the square root of 3(the number of results). The normalized deviation of the mean
from the known value is calculated by dividing the deviation of the mean from the known value by
the standard error of the mean.
A complete explanation of the statistical calculations involved in the report may be found in
the Environmental Radioactivity Performance Evaluation Studies Program information brochure
[Draft Revision of EPA-600/4-81-004], available from Patricia Honsa, ESD-LV, 702/798-2141.
-------
fr
ESD-LV Performance Evaluation: Blind-A, 21-Apr-1998
3/30
Gross Alpha
Statistical Summary
182 Participants
The known value of this nuclide is 54.4 pCi/1 with an expected precision of 13.6; the control limits
are 30.8 to 78.0; the warning regions are 30.8 to 38.7 and 70.1 to 78.0
47(25.8 %) Failed to respond %
7(3.8 %) Outliers ~'
5(2.7 %) Out of control'
but not an outlier
Statistic
.116(63.7 %) Within all limits
Respondents
7(3.8 %) In warning zone
but within control
Non-outliers
Mean
Std. Dev.
Variance
% Coef. of Var.
% deviation of mean from known value
Norm. dev. of mean from known value
Median
% deviation of median from known value
Norm. dev. of median from known value
55.18
Grand Avg 53.26
20.09
9.73
403.46
94.77
36.40
18.28
1.43
-2.09
0.04
-0.12
53.43
53.27
-1.78
-2.08
-0.05
-0.12
-------
ESD-LV Performance Evaluation: Blind-A, 21-Apr-1998
Gross Alpha
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
N
Normalized deviation
(grand-avg) (known) Tag
A
44.8
44.6
45.5
0.47
0.039
44.97
-1.06
-1.20

AE
36.8
33.6
31.7
2.58
0.222
34.03
-2.45
-2.59

AF
55.4
58.1
65.7
5.34
0.447
59.73
0.82
0.68

AH
71.1
68.9
70.2
1.11
0.096
70.07
2.14
2.00

AJ
85.5
78.5
77.4
4.39
0.352
80.47
3.46
3.32
It
AK
64.0
58.9
61.5
2.55
0.222
61.47
1.04
0.90

AL
61.6
61.7
59.1
1.47
0.113
60.80
0.96
0.82

AP








•
AR
117.3
113.4
120.9
3.75
0.326
117.20
8.14
8.00
X
AU
58.6
63.0
62.6
2.43
0.191
61.40
1.04
0.89

AW
49.9
52.1
55.3
2.72
0.235
52.43
-0.11
-0.25

AZ
52.6
54.2
53.5
0.80
0.069
53.43
0.02
-0.12

BA
61.1
62.7
57.9
2.44
0.208
60.57
0.93
0.79

BB
38.1
40.8
40.2
1.42
0.117
39.70
-1.73
-1.87

BC
711
73.6
73.3
1.36
0.109
72.67
2.47
2.33

BG








•
BH
54.2
56.9
54.9
1.40
0.117
55.33
0.26
0.12

BK
600
61.0
62.0
1.00
0.087
61.00
0.99
0.84

BL








•
BM
61.8
61.2
61.3
0.32
0.026
61.43
1.04
0.90

BN
63.9
69.9
69.9
3.46
0.261
67.90
1.86
1.72

BO
53.0
48.0
48.0
2.89
0.217
49.67
-0.46
-0.60

BS
52.4
58.1
50.9
3.80
0.313
53.80
0.07
-0.08

BW








•
C
49.5
49.1
49.0
0.26
0.022
49.20
-0.52
-0.66

CA
50.0
48.0
47.0
1.53
0.130
48.33
-0.63
-0.77

CC








•
CE
56.8
56.1
56.6
0.36
0.030
56.50
0.41
0.27

CJ
51.0
48.0
51.0
1.73
0.130
50.00
-0.42
-0.56

CO
51.0
45.6
50.2
2.91
0.235
48.93
-0.55
-0.70

CP
56.8
54.0
59.6
2.80
0.243
56.80
0.45
0.31

cs
40.5
46.3
40.1
3.47
0.269
42.30
-1.40
-1.54

cx
59.8
61.9
60.1
1.14
0.091
60.60
0.93
0.79

D
59.4
71.3
62.0
6.26
0.517
64.23
1.40
1.25

DB
52.0
54.0
53.0
1.00
0.087
53.00
-0.03
-0.18

DD
49.5
51.6
47.4
2.10
0.182
49.50
-0.48
-0.62

DE
58.7
58.9
59.1
0.20
0.017
58.90
0.72
0.57

DI








•
DO








•
DT
50.1
47.9
47.4
1.44
0.117
48.47
-0.61
-0.76

DZ
55.3
53.1
47.7
3.91
0.330
52.03
-0.16
-0.30

E
56.0
64.5
60.5
4.25
0.369
60.33
0.90
0.76

EB
54.6
55.4
54.1
0.66
0.056
54.70
0.18
0.04

EL








•
EO
47.0
57.0
58.0
6.08
0.478
54.00
0.09
-0.05

• =
« 0 S
v-	
No data submitted
Insufficient data
X S
TAG SYMBOLS
Determined to be an outlier
11 = Above control limit
11 = Below control limit
-------
((	
V-

ESD-LV Performance Evaluation: Blind-A, 21-Apr-1998
	
5/30
Gross Alpha







\
Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation

Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
ER
61.5
60.9
64.1
1.70
0.139
62.17
1.13
0.99

EV
51.7
49.1
45.3
3.22
0.278
48.70
-0.58
-0.73

EX
60.5
53.2
41.7
9.48
0.817
51.80
-0.19
-0.33

HE-'
99;f
ioi;8
Mr
1.31
T 0.104
101.20
6;10
5.96
X
FF
29.5
29.9
28.5
0.72
0.061
29.30
-3.05
-3.20
U
FJ








•
FL
37.7
39.9
45.4
3.97
0.334
41.00
-1.56
-1.71

FN
40.0
35.0
36.0
2.65
0.217
37.00
-2.07
-2.22

GI








*
GQ
30.9
31.0
30.5
0^26
0.022
30.80
-2.86
-3.01
U
GZ
66.3
66.6
60.0
3.73
0.287
64.30
1.41
1.26

m
52.8
42.8
36.1
8.40
0.725
43.90
-1.19
-1.34

HK
66.1
67.0
74.6
4.67
0.369
69.23
2.03
1.89

HL
49.6
46.0
45.5
2.24
0.178
47.03
-0.79
-0.94

HP
52.6
52.5
53.1
0.32
0.026
52.73
-0.07
-0.21

I
41.7
43.9
45.7
2.00
0.174
43.77
-1.21
-1.35

ID
51.0
52.2
49.9
1.15
0.100
51.03
-0.28
-0.43

IU








• -1
J







V
~
JE
59.5
53.5
41.8
9.00
0.769
51.60
-0.21
0.36

JG








•
JM
40.0
40.9
40.2
0.47
0.039
40.37
-1.64
1.79

JN
65.5
51.2
42.3
11.70
1.014
53.00
-0.03
0.18

JQ
52.6
58.3
54.7
2.88
0.248
55.20
0.25
0.10

JS
42.4
44.5
43.8
1.07
0.091
43.57
-1.24
-1.38

JY
59.0
52.9
51.6
3.95
0.321
54.50
0.16
0.01

K
46.7
55.4
57.7
5.80
0.478
53.27
0.00
-0.14

KE
203.0
224.4
223.0
13.51
1.163
218.47
21,04
20.89
X
KT
50.0
52.0
54.0
2.00
0.174
52.00
-0.16
-0.31

KX
70.2
64.8
69.0
2.84
0.235
68.00
1.88
1.73

L
46.9
45.0
48.7
1.85
0.161
46.87
-0.81
-0.96

le








• -
LF
45.0
49.0
46.0
2.08
0.174
46.67
-0.84
-0.98

LL
55.0
68.9
43.5
12.72
1.196
55.80
0.32
0.18

LR
48.2
45.6
45.9
1.42
0.113
46.57
-0.85
-1.00

LT









M









MF
72.6
81.8
_77.1^
4.60
0.400
77.17
3.04
2.90

MP





' 5- ""i'. i\ -"'V,

T "r

MT









MV
67.5
50.8
62J0
8^51
0.725
6010
0.81
0.73

MY









N
50.2
47.2
51.1
2.04
0.169
49.50
-0.48
¦0,62

NA
69.0
68.0
66.0
1.53
0.130
67.67
1.83
1,69

NH
46.0
50.0
46.0
2.31
0.174
47.33
-0.76
-0,90

• = '
No data submitted

TAG SYMBOLS

It = Above control limit
1 0 5
	
Insufficient data
x =
Determined to be an outlier
s Below control limit ,
-------
A =
6/30
ESD-LV Performance Evaluation: Blind-A, 21-Apr-1998

— ^
Gross Alpha







-
Lab
Res. 1


Exper.
Rng anal

Normalized deviation

Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
NJ
50.8
52.7
49.2
1.75
0.152
50.90
-0.30
-0.45

NK








• .
NO
55.0
60.0
65.0
5.00
0.434
60.00
0.86
0.71

O
66.9
70.2
66.5
2.03
0.161
67.87
1.86
1.72

OB
56.0
40.7
49.7
7.69
0.665
48.80
-0.57
-0.71

OF
56.5
59.1
59.8
174
0.143
58.47
0.66
0.52

OM








•
OS
55.0
53.0
53.0
1.15
0.087
53.67
0.05
-0.09

OY









P
45.3
64.8
48.0
10.57
0.847
52.70
-0.07
-0.22

PA








•
PB
55.7
55.4
57.2
0.96
0.078
56.10
0.36
0.22

PD








•
PG








•
PM
46.3
43.8
40.9
2.70
0.235
43.67
-1.22
-1.37

FW








•
Q
56.3
58.1
59.4
1.56
0.135
57.93
0.59
0.45

QM
43.2
42.7
38.8
2.41
0.191
41.57
-1.49
-1.63

QP
57.4
59.2
56.4
1.42
0.122
57.67
0.56
0.42

QQ
50.3
50.9
52.5
1.14
0.096
51.23
-0.26
-0.40

QT
54.1
60.8
52.9
4.26
0.343
55.93
0.34
0.20

QU
89.5
96.0
102.5
6.50
0.565
96.00
5.44
5.30
X
QW
90.0
93.8
100.1
5.10
0.439
94.63
6.27
5.12
X
ox
61.7
63.3
63.4
0.95
0.074
62.80
1.21
1.07

QY








•
QZ
48.7
48.4
53.7
2.98
0.230
50.27
-0.38
-0.53

RB
64.1
63.9
63.0
0.59
0.048
63.67
1.32
1.18

RD
49.5
53.1
48.0
2.62
0.222
50.20
-0.39
-0.53

RG
58.6
60.5
59.5
0.95
0.083
59.53
0.80
0.65

RI
42.9
49.7
48.1
3.56
0.295
46.90
-0.81
-0.96

RK
62.6
58.0
60.2
2.30
0.200
60.27
0.89
0.75

RP








•
RR








~
RU








•
RZ








•
S
52.9
64.4
57.7
5.78
0.499
58.33
0.65
0.50

SD
57.4
48.1
52.8
4.65
0.404
52.77
-0.06
-0.21

SF








<•
SG
46.8
46.9
47.2
0.21
0.017
46.97
-0.80
-0.95

SI
58.5
53.1
52.3
3.37
0.269
54.63
0.17
0.03

SL
77.1
77.7
77.0
0.38
0.030
77.27
3.06
2.91

SM
58.7
57.6
57.9
0.57
0.048
58.07
0.61
0.47

SN
69.0
60.0
58.0
5.86
0.478
62.33
1.15
1.01

SO
50.6
47.4
47.9
1.72
0.139
48.63
-0.59
-0.73

SR
3.2
3.6
3:6
0.23
0.017
3.47
-6.34
-6.49
X
• =
No data submitted

TAG SYMBOLS

IT s Above control limit
0 3
Insufficient data
X =
Determined to be an outlier
s Below control limit
				-y
-------
1 >
ESD-LV Performance Evaluation: Blind-A, 21-Apr-1998	7/30
Gross Alpha
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
SS
56.8
60.4
60.9
2.24
0.178
59.37
0.78
0.63

SX
53.1
58.0
55.0
2.47
0.213
55.37
0.27
0.12

sz
60.1
67.2
68.9
4.67
0.382
65.40
1.55
1.40

T
49.5
43.5
40.4
4.63
0.395
44.47
-1.12
-1.27

TD
43.3
52.7
51.8
5.19
0.408
49.27
-0.51
-0.65

TL








•
TN
55.9
61.2
62.6
3.53
0.291
59.90
0.85
0.70

TQ
66.1
65.4
68.3
1.51
0.126
66.60
1.70
1.55

TS '








• ;;
TU
21.5
19.0
30.0
5.77
0.478
23.50
-3.79
-3.94
T
TY
57.3
58.6
55.9
1.35
0.117
57.27
0.51
0.37

U
38.9
39.2
37.0
1.19
0.096
38.37
-1.90
-2.04

VX









UK








•
UM








»
UP
45.5
44.5
47.2
1.37
0.117
45.73
-0.96
-1.10

UQ
53.3
55.1
54.7
0.95
0.078
54.37
0.14
0.00

UY^
0.1
01
01
0.00
0.000
010
-6.77
-6.92
X/;
VA
59.0
46.1
31.8
13.61
1.345
45.63
-0.97
-1.12

VC









VH
56.4
60.9
55.0
3.08
0.256
57.43
0.53
0.39

VI
58.4
59.9
59.2
0.75
0.065
59.17
0.75
0.61

VJ
27.7
28.2
26.7
0.76
0.065
27.53
-3.28
-3.42
u
VM









VO








•
VT
63.5
72.7
67.2
4.63
0.400
67.80
1.85
1.7i

:-w:









WE
48.4
43.3
43.3
2.94
0.222
45.00
-1.05
-1.20

WH
50.8
45.2
50.7
3.20
0.243
48.90
-0.56
-0.70

WO
47.1
47.3
47.0
0.15
0.013
47.13
-0.78
-0.93

WR
51.6
55.3
59.5
3.95
0.343
55.47
0.28
0.14

WW
47.4
52.2
46.7
2.99
0.239
48.77
-0.57
-0.72

X
58.0
56.9
47.0
6.06
0.478
53.97
0.09
-0.06

XA








• .
XC








• . *
XD








¦
XF
53.2
54.0
52.6
0.70
0.061
53.27
0.00
-0.14

XI
48.0
46.0
48.0
1.15
0.087
47.33
-0.76
-0.90

XJ
47.9
50.1
46.4
1.86
0.161
48.13
-0.65
-0.80

XK
55.0
55.0
54.9
0.05
0.004
54.97
0.22
0.07

XL
44.2
42.5
41.7
1.28
0.109
42.80
-1.33
-1.48

XM
61.9
57.7
53.3
4.30
0.374
57.63
0.56
0.41

XN
48.0
37.8
38.7
5.65
0.443
41.50
-1.50
-1.64

SoJ


















f:
• = No data submitted
0 s Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
IT = Above control limit
= Below control limit
-------
8/30
ESD-LV Performance Evaluation: Blind-A, 21-Apr-1998
Gross Alpha
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
XQ 39.0
XR
Normalized deviation
(grand-avg) (known) Tag
30.1
39.0
5.14
0.387
36.03
-2.19


Data sorted by Laboratory Average
-2.34

Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
0.10
X
UY
48.77

WW
55.47

WR
3.47
X
SR
48.80

OB
55.80

LL
23.50
U
TU
48.90

WH
55.93

QT
27.53
u
VJ
48.93

CO
56.10

PB
29.30
u
FF
49.20

C
56.50

CE
30.80

GQ
49.27

TD
56.80

CP
34.03

AE
49.50

N
57.27

TY
36.03

XQ
49.50

DD
57.43

VH
37.00

FN
49.67

BO
57.63

XM
38.37

U
50.00

CJ
57.67

QP
39.70

BB
50.20

RD
57.93

Q
40.37

JM
50.27

QZ
58.07

SM
41.00

FL
50.90

NJ
58.33

S
.41.50

XN
51.03

ID
58.47

OF
41.57

QM
51.23

QQ
58.90

DE
42.30

CS
51.60

JE
59.17

VI
42.80

XL
51.80

EX
59.37

SS
43.57

JS
52.00

KT
59.53

RG
43.67

PM
52.03

DZ
59.73

AF
43.77

I
52.43

AW
59.90

TN
43.90

HI
52.70

P
60.00

NO
44.47

T
52.73

HP
60.10

MV
44.97

A
52.77

SD
60.27

RK
45.00

WE
53.00

JN
60.33

E
45.63

VA
53.00

DB
60.57

BA
45.73

UP
53.27

XF
60.60

CX
46.57

LR
53.27

K
60.80

AL
46.67

LF
53.43

AZ
61.00

BK
46.87

L
53.67

OS
61.40

AU
46.90

RI
53.80

BS
61.43

BM
46.97

SG
53.97

X
61.47

AK
47.03

HL
54.00

EO
62.17

ER
47.13

WO
54.37

UQ
62.33

SN
47.33

XI
54.50

JY
62.80

QX
47.33

NH
54.63

SI
63.67

RB
48.13

XJ
54.70

EB
64.23

D
48.33

CA
54.97

XK
64.30

GZ
48.47

DT
55.20

JQ
65.40

SZ
48.63

SO
55.33

BH
66.60

TQ
48.70

EV
55.37

SX
67.67

NA
• = No data submitted
0 = Insufficient data

TAG SYMBOLS
x = Determined to be an outlier
tr
= Above control limit
= Below control limit
-------
ESD-LV Performance Evaluation: Blind-A, 21-Apr-1998
9/30
Gross Alpha
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
67.80

VT
70.07

AH
94.63
X
QW
67.87

O
72.67

BC
96.00
X
QU
67.90

BN
77.17

MF
101.20
X
FE
68.00

KX
77.27

SL
117.20
X
AR
69.23

HK
80.47
tr
AJ
218.47
X
KE
% responding labs
Frequency distribution
10-
jiU

*mL
_¦	
-6
responding labs
-4	-2	0	+2
Normalized deviation of the mean from the known value
Frequency distribution
+4
+6
10-
&
llftjf
j—
j —
¦2	6	+2	+4
Normalized deviation of the mean from the grand average
-r*
+6
-6
T*
-4
• s No data submitted
0 = Insufficient data
TAG SYMBOLS
x = Determined to be an outlier
It = Above control limit
!!• s Below control limit
-------
ESD-LV Performance Evaluation: Blind-A, 21-Apr-1998
10/30
Radium-226	Statistical Summary	182 Participants
The known value of this nuclide is 15.0 pCi/1 with an expected precision of 2.3; the control limits
are 11.0 to 19.0; the warning regions are 11.0 to 12.3 and 17.7 to 19.0
92(50.5 %) Failed to respond
9(4.9 %) Outliers
4(2.2 %) Out of control
but not an outlier
Statistic
; 70(38.5 %) Within all limits
Respondents
* 7(3.8 %) In warning zone
but within control
Non-outliers
Mean
17.91
Grand Avg 14.57
Std. Dev.
26.63
1.70
Variance
709.33
2.91
% Coef. of Var.
148.72
11.70
% deviation of mean from known value
19.39
-2.88
Norm. dev. of mean from known value
0.11
-0.25
Median
14.38
14.37
% deviation of median from known value
-4.11
-4.22
Norm. dev. of median from known value
-0.02
-0.37
13(14.4 %) More than 3 norm. S.D. ,
7(7.8 %) Between 2 and 3 norm. S.D.'
; 46(51.1 %) Within 1 norm. S.D.
of known value
24(26.7 %) Between 1 and 2 norm. S.D.
-------
f(	
11/
30
ESD-LV Performance Evaluation: Blind-A, 21-Apr-1998

	
Radium-226








Lab
Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
A
13.6
13.8
12.4
0.76
0.360
13.27
-0.98
-1.31

AE
13.2
13.8
14.0
0.42
0.205
13.67
-0.68
-1.00

AF
AA
14.3
14.1
14.0
0.15
0.077
14.13
-0.33
-0.65
•
AJ
20.0
19.8
18.5
0.81
0.385
19.43
3.66
3.34
It
AK
13.7
13.9
14.6
0.47
0.231
14.07
-0.38
-0.70

AL
14.5
14.0
14.6
0.32
0.154
14.37
-0.15
-0.48

AP








• '
AR








•
AU
12.
.6.6-
6.5
0.38
0.180
6.77
-6.88
-6 20
X -
AW
14.0
14.1
14.5
0.26
0.128
14.20
-0.28
-0.60

AZ
16.1
17.6
16.0
0.90
0.411
16.57
1.50
1.18

BA
13.0
13.6
14.2
0.60
0.308
13.60
-0.73
-1.05

BB








•
BC
16.4
19.3
16.2
1-73
0.796
17.30
2.06.
1.73

BG








•
BH
13.4
15.2
15.8
1.25
0.616
14.80
0.17
-0.15

BK
14.7
15.0
14.6
0.21
0.103
14.77
0.15
-0.18

BL








-V ¦
BM
13.4
14.0
12.1
0.97
0.488
13.17
-1.06
-1.38

BN
12.5
12.8
12.9
0.21
0.103
12.73
-1.38
-1.71

BO
14.3
15.2
14.5
0.47
0.231
14.67
0.07
-0.25

BS








•
BW








•
C
15.1
15.4
15.3
0.15
0.077
15.27
0.53
0.20

CA
14.6
163
149
0.91
0.437
15.27
0.53
0.20

CC








• ¦
CE
12.7
13.1
15.6
1.57
0.745
13.80
-0.58
-0.90

CJ
150
15.0
15.0
O.OO
0.000
15.00
0.32
0.00

CO








'• *-
CP








•
CS
16.3
16.0
15.9
0.21
0.103
16.07
1.13
0.80

CX









D








• '
DB
13.8
13.6
14^0
0.20
0.103
13.80
-0.58
-0.90

DD








.
DE
141
14.3
14^5
°-20
0.103
14-30
-0.20
-0^53

DI









DO








>si>^'
DT
14.0
14.2
14.6
0.31
0.154
14.27
-0.23
-0.55

DZ
16.2
13.6
15.0
1.30
0.668
14.93
0.27
-0.05

E
14.1
14.3
14.8
0.36
0.180
14.40
-0.13
-0.45

EB
11.9
12.4
12.3
0.26
0.128
12.20
-1.78
-2.11

EL
16.8
18.6
17.0
0.99
0.462
17.47
2.18
1.86

EO
15.1
15.8
15.5
0.35
0.180
15.47
0.68
0.35

• =
No data submitted

TAG SYMBOLS

ft s Above control limit
0 s
V	
Insufficient data
x =
Determined to be an outlier
JJ- = Below control limit
		—-y
-------
((	

ESD-LV Performance Evaluation: Blind-A, 21-Apr-1998
	^
12/30
f
Radium-226







Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
ER
15.1
15.8
15.5
0.35
0.180
15.47
0.68
0 35
-EV>








EX








FE
13.5
14.9
13.5
0.81
0.360
13.97
-0.45
-0.78
FF







#
FJ







•
FLi








FN
18.4
16.6
18.0
0.95
0.462
17.67
2.33
2.01
-m-:t







•
GQ
13.5
12.1
12.8
0.70
0.360
12.80
-1.33
-1.66
GZ








Bar








HK
14.9
15.2
14.7
0.25
0.128
14.93
0.27
-0.05
HL
14.7
14.6
15.1
0.26
0.128
14.80
0.17
-0.15
HP
14.9
14.5
15.2
0.35
0.180
14.87
0.22
-0.10
I
14.5
12.1
13.4
1.20
0.616
13.33
-0.93
-1.26
ID
14.1
14.7
10.9
2.04
0.976
13.23
-1.01
-1.33
iu







•
j ;







' •
JE
14.4
18.4
13.7
2.54
1.394
15.50
0.70
0.38
JG







•
JM
14.3
14.3
15.6
0.75
0.334
14.73
0.12
-0.20
JlSf







«
JQ







•
JS
14.0
15.6
11.2
2.23
1.248
13.60
-0.73
-1.05
JY
19.0
18.8
19.9
0.59
0.282
19.23
3.51
3.19 It
K
138
14.2
15.0
0.61
0.308
14.33
-0.18
-0.50
KE







•
KT







•
KX








L
11.6
11.6
12.3
°\40
0180
11.83
-2.06
-2.38
LE








'LEV







*
LL







•
LR
21^0
Mb!
220
1.63
0.770
22.33
5.85
5.52 x
LT/:







•
M







/ «
MF
11.4
13.4
12.7
1.01
0.514
12.50
-1.56
-1.88
MP?








MT








;^MV







•
MY







•
N
15.2
14.1
14.4
0.57
0.282
14.57
0.00
-0.33
NA







•
NH
12.1
12.8
12.9
0.44
0.205
12.60
-1.48
-1.81
• s
No data submitted

TAG SYMBOLS

ft = Above control limit
in
5)
Insufficient data
x ~
Determined to be an outlier
= Below control limit
-------
f(			
13/30
ESD-LV Performance Evaluation: Blind-A, 21-Apr-1998

	S\
Radium-226







1
Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation

Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
NJ
16.1
18.3
15.7
1.40
0.668
16.70
1.60
1.28

NK








•
NO
15.5
15.7
16.7
0.64
0.308
15.97
1.05
0.73

O
15.3
15.1
13.7
0.87
0.411
14.70
0.10
-0.23

OB








•
OF








•
OM








•
OS








9
OY








•
P
15.7
176
14.7
1.47
0.745
16.00
108
0.75

PA









PB
14.5
15.0
14.8
0.25
0.128
14.77
0.15
-0.18

PD








•
PG








•
PM








•
PW
20.8
21.4
21.0
0.31
0.154
21.07
4.89
4^57
X
Q
14.1
14.4
14.6
0.25
0.128
14.37
-0.15
-0.48

QM
12.8
13.2
13.0
°-20
0.103
13.00
-1.18
-1.51

QP








•
QQ
10.5
10.9
10.7
0.20
0.103
10.70
-2.91
-3.24

QT
3.1
6.4
6.5
L93
0.873
5.33
-6.95
-7.28
X
QU
21.8
21.4
20.5
0.67
0.334
21.23
5.02
4.69
X
QW








•
QX








•
QY
60.7
60.1
61.5
0.70
0.360
60.77
34.79
34.47

QZ
13.9
14.3
133
0.50
0.257
13.83
-0.55
-0.88

RB








•
RD
12.6
16.3
13.7
1.90
0.950
14.20
-0.28
-0.60

RG








•
RI









RK
12.8
12.9
14.0
0.67
0.308
1323
"101
-1.33

RP









RR









RU
34414
246.9
96.4
75.67
71.981
262.23
186.51
186.18

RZ









S
15.4
15.2
15.2
0.12
0.051
15.27
0.53
0.20

SD
13.7
12.9
12.5
0.61
0.308
13.03
-1.16
-1.48

SF








V*
SG









SI
10.2
11.1
9.9
0.62
0.308
10.40
-3.14
3.46
U
SL








-
SM
18.8
19.0
19.0
0.12
0.051
18.93
329
2.96

SN








•
SO








•
SR








•
• =
No data submitted

TAG SYMBOLS

IT = Above control limit
10S
Insufficient data
X s
Determined to be an outlier
U- = Below control limit
	—		
-------
[

ESD-LV Performance Evaluation: Blind-A, 21-Apr-1998
	
14/30
Radium-226






\
Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
SS
15.8
14.1
15.8
0.98
0.437
15.23
0.50
0.18
SX
13.9
14.8
13.7
0.59
0.282
14.13
-0.33
-0.65
sz
17.0
14.4
15.5
1.31
0.668
15.63
0.80
0.48
T
15.2
15.3
15.2
0.06
0.026
15.23
0.50
0.18
TD
23.4
22,9
26.1
1.72
0.822
24.13
7.20
6.88 x
TL







TN
12.8
14.8
15.4
1.36
0.668
14.33
-0.18
0.50
TQ
15.3
14.8
15.3
0.29
0.128
15 13
0.43
0.10
;:TS







•
TU
12.1
11.2
13.1
0.95
0.488
12:13
-1.83
2.16
TY








U
13.3
13.8
13.7
0.26
0.128
13.60
-0.73
1.05
UA








UK







•
UM







•
UP
14.9
14.8
12.8
1.18
0.539
14.17
-0.30
-0.63
UQ
133
14.4
13.4
0.61
0.282
13.70
-0.65
-0.98
UY








VA
19.0
14.8
16.1
2.15
1.150
16.63
1.55
1.23
VC







•
VH
14.6
13.2
13.1
0.84
0.385
13.63
-0.70
-1.03
VI
16.2
13.4
13.4
1.62
0.719
14.33
-0.18
-0.50
VJ







•
VM







•
VO







«
VT







•
W
12.4
10.8
11.6
0.80
0.411
11.60
-2.24
-2.56
W E








WH
15.3
16.0
15.8
0.36
0.180
15.70
0.85
0.53
WO
17.5
13.5
18.0
2.47
1.296
16.33
1.33
100
WR








WW







•
X
13.3
13.9
13.7
0.31
0.154
13.63
-0.70
-1.03
XA
18.1
16.4
19.9
1.75
0.899
18.13
2.68
2.36
XC







*
XD








<;XF..








XI
m,

Wi,
'0;76k

:;183
III

XJ







¦ •
XK








XL
14.7
15.1
15.5
0.40
0.205
15.10
0.40
0.08
XM
13.0
14.0
13.9
0.55
0.257
13.63
-0.70
-1.03	









xo








XP








• =
No data submitted

TAG SYMBOLS

1t s Above control limit
[0-
Insufficient data
x =
Determined to be an outlier
U = Below control limit
-------
15/30
ESD-LV Performance Evaluation: Blind-A, 21-Apr-1998
Radium-226
Lab Res. 1
Exper. Rng anal	Normalized deviation
Res. 2 Res. 3 Sigma (R + SR) Average (grand-ave) (known) Tatr
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag Lab
Average
Tag
Lab
5.33
X
QT
13.83
QZ
15.23

T
6.77
X
AU
13.97
FE
15.23

SS
7.83
X
XI
14.07
AK
15.27

S
10.40
u
SI
14.13
SX
15.27

CA
10.70
4
QQ
14.13
AF
15.27

C
11.60

w
14.17
UP
15.47

ER
11.83

L
14.20
RD
15.47

EO
12.13

TU
14.20
AW
15.50

JE
12.20

EB
14.27
DT
15.63

SZ
12.50

MF
14.30
DE
15.70

WH
12.60

NH
14.33
VI
15.97

NO
12.73

BN
14.33
TN
16.00

P
12.80

GQ
14.33
K
16.07

CS
13.00

QM
14.37
Q
16.33

WO
13.03

SD
14.37
AL
16.57

AZ
13.17

BM
14.40
E
16.63

VA
13.23

RK
14.57
N
16.70

NJ
13.23

ID
14.67
BO
17.30

BC
13.27

A
14.70
O
17.47

EL
13.33

I
14.73
JM
17.67

FN
13.60

U
14.77
PB
18.13

XA
13.60

JS
14.77
BK
18.93

SM
13.60

BA
14.80
HL
19.23
ft
JY
13.63

XM
14.80
BH
19.43
ft
AJ
13.63

X
14.87
HP
21.07
X
PW
13.63

VH
14.93
HK
21.23
X
QU
13.67

AE
14.93
DZ
22.33
X
LR
13.70

UQ
15.00
CJ
24.13
X
TD
13.80

DB
15.10
XL
60.77
X
QY
13.80

CE
15.13
TQ
262.23
X
RU
% responding labs

Frequency distribution



10-
JUL
mH
Jil


T

JE
¦t—
-6
-4	-2	6	+2	+4
Normalized deviation of the mean from the known value
+6
• = No data submitted	TAG SYMBOLS	ft s Above control limit
0 s Insufficient data	x = Determined to be an outlier	^ = Below control limit
-------
ESD-LV Performance Evaluation: Blind-A, 21-Apr-1998	16/30 j
Radium-226
% responding labs	Frequency distribution
10-
0
g, w y , wy	BBBB^M-B y— ^ - ¦
flnffhli
-6	-4	-2	0	+2	+4	+6
Normalized deviation of the mean from the grand average
-------
		_	.
ESD-LV Performance Evaluation: Blind-A, 21-Apr-1998	17 / 30
Radium-228	Statistical Summary	182 Participants
The known value of this nuclide is 9.3 pCi/1 with an expected precision of 2.3; the control limits
are 5.3 to 13.3; the warning regions are 5.3 to 6.6 and 12.0 to 13.3
Statistic	Respondents	Non-outliers
Mean
11.90
Grand Avg 9.50
Std. Dev.
19.12
1.61
Variance
365.48
2.59
% Coef. of Var.
160.69
16.94
% deviation of mean from known value
27.93
2.12
Norm. dev. of mean from known value
0.14
0.12
Median
9.42
9.33
% deviation of median from known value
1.25
0.36
Norm. dev. of median from known value
0.01
0.02
-------
((	








	^
18/30
\
ESD-LV Performance Evaluation: Blind-A, 21-Apr-1998


Radium-228







s
Lab
Res. 1


Exper.
Rng anal

Normalized deviation

Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
A
8.0
8.0
7.6
0.23
0.103
7.87
-1.23
-1.08

AE
8.2
8.3
8.5
0.15
0.077
8.33
-0.88
-0.73

AF
11.7
10.8
12.3
0.75
0.385
11.60
1.58
1.73

AH








•
AJ
7.4
10.2
8.3
1.43
0.719
8.63
-0.65
-0.50

AK
7.9
6.9
7.0
0.55
0.257
7.27
-1.68
-1.53

AL
11.2
7.7
8.1
1.92
0.899
9.00
-0.37
-0.23

AP








~
AR








•
AU
1.7
10.0
2.7
4.53
3.155
4.80
-3.54
-3.39

AW
11.6
12.1
12.3
0.36
0.180
12.00
1.88
2.03

AZ
9.9
9.7
10.4
0.36
0.180
10.00
0.38
0.53

BA
8.2
7.8
7.6
0.31
0.154
7.87
-1.23
1.08

BB








•
BC
11.9
11.6
11.7
0.15
0.077
11.73
1.68
1.83

BG








•
BH
9.4
8.4
9.5
0.61
0.282
9.10
-0.30
0.15

BK
10.2
9.2
9.7
0.50
0.257
9.70
0.15
0.30

BL









BM
10.5
10.8
10.7
0.15
0.077
10.67
0.88
103

BN








•
BO
9.7
9.3
10.3
0.50
0.257
9.77
°-20
0.35

BS








•
BW








•
C
9.4
9.5
9.6
0.10
0.051
9.50
0.00
0.15

CA
8.9
7.0
7.5
0.98
0.488
7.80
-1.28
1.13

CC









CE
12.1
9.2
9.2
1.67
0.745
10.17
0.50
0.65

CJ
8.3
8.7
8.5
0.20
0.103
8.50
-0.75
0.60

CO









CP








•
cs
10.1
9.4
9.0
0.56
0.282
9.50
0.00
0.15

cx









D









DB
8.4
8.3
8.0
0.21
0.103
8.23
-0.95
¦0.80

DD








•
DE
7.1
7.3
7.5
0.20
0.103
7.30
-1.65
¦1.51

DI









DO








•
DT
8.4
8.5
7.5
0.55
0.257
8.13
-1.03
-0.88

DZ
8.7
9.0
8.9
0.15
0.077
8.87
-0.47
-0.33

E
8.9
9.3
9.6
0.35
0.180
9.27
-0.17
-0.03

EB
9.5
9.1
9.1
0.23
0.103
9.23
-0.20
-0.05

EL
7.8
8.8
10.3
1.26
0.642
8.97
-0.40
-0.25

EO
9.8
8.9
9.4
0.45
0.231
9.37
-0.10
0.05

• =
No data submitted

TAG SYMBOLS

ft = Above control limit
10S
Insufficient data
X s
Determined to be an outlier
II = Below control limit
-------
ESD-LV Performance Evaluation: Blind-A, 21-Apr-1998
19/30
Radium-228
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
ER







•'
C;EV. ¦








EX








FE;







•
¦







•
FJ







•
'.FL-'







• 1 .
FN
9.7
9.4
9.5
0.15
0.077
9.53
0.03
0.18
GI







¦ •
GQ
i4-2
12.3
13.3
0.95
0.488
13.27
2.84
2.99
GZ







•
HI







. •
HK
8.6
9.8
8.8
0.64
0.308
9.07
-0.32
-0.18
HL
7.4
8.5
7.8
0.56
0.282
7.90
-1.20
-1.05
HP
8.8
10.1
9.5
0.65
0.334
9.47
-0.02-
0.13
I
9.9
8.2
9.4
0.87
0.437
9.17
-0.25
-0.10
ID
8.5
6.2
9.3
1.61
0.196
8.00
-1.13
-0.98
IU







•'
J J.







• -
JE
9.4
8.8
9.1
0.30
0.154
9.10
-0.30
-0.15
J G







»
JM







*
JN







•-
JQ







•
JS
10.2
9.2
12.2
1.53
0.770
10.53
0.78
0.93
JY
13.9
13.4
13.1
0.40
0.205
13.47
2.99
3.14 ft
K
14.0
13.4
13.5
0.32
0.154
13.63
3.11
3.26 ft
KE







•
KT








KX







m '
L
10:3
8.9
9.7
0.70
°-360
9.63
0.10
0.25
LE *







•
LF








'u/;








LR

















- mi(;
¦^s







MF
9.8
10.4
9.6
0.42
0.205
9.93
0.33
0.48 ^
,:MP:t-







MT








?Ml£







•
MY








N
10 9
10.3
9.7
0.60
°-308
10.30
0.60
0/75
NA
£






•
NH
11.1
9.5
10.3
0.80
0.411
10.30
0.60
0.75
• =
0 =
No data submitted
Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
ft = Above control limit
II = Below control limit

-------
ft
20/30
ESD-LV Performance Evaluation: Blind-A, 21-Apr-1998
			^
Radium-228



-



Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
NJ
11.5
10.0
10.5
0.76
0.385
10.67
0.88
103
NK







•
NO
8.0
9.0
10.0
1.00
0.514
9.00
-0.37
-0.23
O
9.4
9.6
10.1
0.36
0.180
9.70
0.15
0.30
OB







•
OF







•
OM







•
OS







9
OY







9
P
7.7
8.4
6.9
0.75
0.385
7.67
-1.38
-1.23
PA








PB
9.4
9.6
9.8
0.20
0.103
9.60
0.08
0.23
PD







9
PG







•
PM








PW
10.8
11.0
10.6
0.20
0.103
10.80
0.98
1.13
Q
10.0
9.1
10.3
0.62
0.308
9.80
0.23
0.38
QM








QP








QQ








QT
8.6
8.9
8.8
0.15
0.077
8.77
-0.55
-0.40
QU
12.4
12.9
13.3
0.45
0.231
12.87
2.54
2.69
QW







•
QX







•
QY







»
QZ
8.2
8.5
8.9
0.35
0.180
8.53
-0.73
-0.58
RB








RD
10.2
10.4
9.8
0.31
0.154
10.13
0.48
0.63
RG








RI







•
RK
27.1
30.9
30.2
2.02
0.976
29.40
14.99
15.14 x .
RP








RR








RU
191.6
182;1
156.8
17.99
16.118
176.83
126.02
126.16 x
RZ







•
S
7.9
7.9
8.0
0.06
0.026
7.93
-1.18
-1.03
SD
7.6
9.2
10.8
1.60
0.822
9.20
-0.22
-O.OS
SF








SG








SI
9.1
8.2
7.7
0.71
0.360
8.33
-0.88
-0.73
St








SM
10.0
9.9
9.7
0.15
0.077
9.87
0.28
0.43
SN








SO







•
SR







•
• =
No data submitted

TAG SYMBOLS

IT = Above control limit
0 s
	
Insufficient data
X EE
Determined to be an outlier
JJ. = Below control limit
-------
a
ESD-LV Performance Evaluation: Blind-A, 21-Apr-1998	21 / 30
Radium-228








Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation

Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
SS
13.6
10.5
9.1
2.30
1.296
11.07
1.18
1.33

SX
9.1
12.8
8.5
2.33
1.199
10.13
0.48
0.63

sz
12.0
11.1
13.7
1.32
0.668
12.27
2.09
2.23

T
9.6
10.4
11.3
0.85
0.437
10.43
0.71
0.85

ID
7.2
9.3
11.4
2.10
1150
9.30
-0.15
0.00

TL








•
TN
11.8
8.2
8.5
2.00
0.925
9.50
0.00
0.15

TQ
8.7
7.6
9.2
0.82
0.411
8.50
-0.75
-0.60

TS








' • -
TU









TY








• /
U
7.7
7.8
8.2
0.26
0.128
7.90
-1.20
-1.05

UA









UK









UM








• '
UP
10.0
10.3
10.3
0.17
0.077
10.20
0.53
0.68

UQ
10.5
10.8
10.0
0.40
0.205
10.43
0.71
0.85

UY








'• -*
VA
14.1
13.6
12.5
0.82
0.411
13.40
2.94
3.09
It
VC







•
'• '
VH
7.5
7.4
6.7
0.44
0.205
7.20
-1.73
-1.58

VI
12.5
11.3
9.1
1.72
0.873
10.97
1.11
1.26

VJ








•
VM








9
VO








•
VT








•
W









WE








•
WH
8.7
8.1
7.8
0.46
0.231
8.20
-0.98
-0.83

WO
8.8
5.2
7.7
1.84
0.925
7.23
-1.70
-1.56

WH








•
WW








#:
X
8.4
6.9
8.0
0.78
0.385
7.77
-1.30
-1.15

XA








•
XC









xd:









VXF*









XI








- • .>
?XJ:i








\b -I".
XK









XL
8.1
8.9
9.4
0.66
0.334
8.80
-0.52
-0.38

XM
9.1
9.3
9.0
0.15
0.077
9.13
-0.27
-0.13

?xn.








•









• ''
XP









• =
No data submitted

TAG SYMBOLS

ff s Above control limit
1 0 S
^	
Insufficient data
x &
Determined to be an outlier
U = Below control limit
-------
22/30
ESD-LV Performance Evaluation: Blind-A, 21-Apr-1998
Radium-228
Lab Res. 1
Exper. Rng anal	Normalized deviation
Res. 2 Res. 3 Sigma (R + SR) Average (grand-avg) (known) Tag
XQ
SR


Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
4.80
a
AU
8.97

EL
10.00

AZ
7.20

VH
9.00

NO
10.13

RD
7.23

WO
9.00

AL
10.13

SX
7.27

AK
9.07

HK
10.17

CE
7.30

DE
9.10

BH
10.20

UP
7.67

P
9.10

JE
10.30

NH
7.77

X
9.13

XM
10.30

N
7.80

CA
9.17

I
10.43

UQ
7.87

BA
9.20

SD
10.43

T
7.87

A
9.23

EB
10.53

JS
7.90

U
9.27

E
10.67

NJ
7.90

HL
9.30

TD
10.67

BM
7.93

S
9.37

EO
10.80

PW
8.00

ID
9.47

HP
10.97

VI
8.13

DT
9.50

TN
11.07

ss
8.20

WH
9.50

CS
11.60

AF
8.23

DB
9.50

c
11.73

BC
8.33

SI
9.53

FN
12.00

AW
8.33

AE
9.60

PB
12.27

sz
8.50

TQ
9.63

L
12.87

QU
8.50

CJ
9.70

O
13.27

GQ
8.53

QZ
9.70

BK
13.40
It
VA
8.63

AJ
9.77

BO
13.47
ft
JY
8.77

QT
9.80

Q
13.63
ft
K
8.80

XL
9.87

SM
29.40
X
RK
8.87

DZ
9.93

MF
176.83
X
RU
imsKSMEBm
% responding labs
Frequency distribution
10-

'j—
-fL
-r-
+4
-2	0	+2
Normalized deviation of the mean from the known value
+6
• s No data submitted	TAG SYMBOLS	ft = Above control limit
0 s Insufficient data	x s Determined to be an outlier	-11 = Below control limit
-------
ESD-LV Performance Evaluation: Blind-A, 21-Apr-1998
23/30
Radium-228
% responding labs	Frequency distribution
10-
I jMflhnT. ¦.
I -—T""T-—y "T	"T"	1	1	
-6	-4	-2	0	+2	+4	+6
Normalized deviation of the mean from the grand average
-------
ESD-LV Performance Evaluation: Blind-A, 21-Apr-1998
24/30
Uranium (Natural)
Statistical Summary
182 Participants
The known value of this nuclide is 5.0 pCi/1 with an expected precision of 3.0; the control limits
tire 0.0 to 10.2; the warning regions are 0.0 to 1.5 and 8.5 to 10.2
82(45.1 %) Failed to respond ,
; 94(51.6 %) Within all limits


— 1 (0.5 %) In warning zone
5(2.7 %) Outliers	
i i
but within control
Statistic
Respondents
Non-outliers
Mean
6.93
Grand Avg 5.08
Std. Dev.
9.81
0.82
Variance
96.17
0.68
% Coef. of Var.
141.41
16.20
% deviation of mean from known value
38.69
1.56
Norm. dev. of mean from known value
0.20
0.09
Median
5.07
5.03
% deviation of median from known value
1.33
0.67
Norm. dev. of median from known value
0.01
0.04
5(5.0 %) More than 3 norm. S.D.
1(1.0 %) Between 2 and 3 norm. S.D.
; 91 (91.0 %) Within 1 norm. S.D.
of known value
** 3(3.0 %) Between 1 and 2 norm. S.D.
-------
25 ! 30	ESD-LV Performance Evaluation: Blind-A, 21-Apr-1998
Uranium (Natural)
Lab
Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
A
4.9
5.0
4.9
0.06
0.020
4.93
-0.08
-0.04
AE
5.1
5.3
5.5
0.20
0.079
5.30
0.13
0.17
AF
5.7
5.7
5.4
0.17
0.059
5.60
0.30
0.35
AH
4.9
5.2
4.8
0.21
0.079
4.97
-0.06
-0.02
AJ
5.2
4.7
4.2
0.50
0.197
4.70
-0.22
-0.17
AK
6.2
6.7
6.2
0.29
0.098
6.37
0.74
0.79
AL
5.7
5.6
6.1
0.26
0.098
5.80
0.42
0.46
AP







•
AR
4.5
4.4
4.4
0.06
0.020
4.43
-0.37
-0.33
AU







•
AW
5.2
5.0
5.3
0.15
0.059
5.17
0.05
0.10
AZ
5.3
5.3
5.3
0.00
0.000
5.30
0.13
0.17
BA
5.4
5.9
5.1
0.40
0.158
5.47
0.22
0.27
BB
4.0
4.3
4.2
0.15
0.059
4.17
-0.53
-0.48
BC
5.1
5.2
5.3
0.10
0.039
5.20
0.07
0.12
BO







•
BH
6.1
6.0
5.7
0.21
0.079
5.93
0.49
0.54
BK
5.6
5.4
5.6
0.12
0.039
5.53
0.26
0.31
BL








BM
5.6
5.4
5.0
0.31
0.118
5.33
0.15
0.19
BN
3.1
4.6
3.6
0.76
0.295
3.77
-0.76
-0.71
BO
4.6
4.6
4.7
0.06
0.020
4.63
-0.26
-0.21
BS







•
BW







•
C
4.6
4.9
5.1
0.25
0.098
4.87
-0.12
-0.08
CA
5.2
5.0
5.0
0.12
0.039
5.07
-0.01
0.04
CC







• ,
CE
5.3
5.5
5.7
0.20
0.079
5.50
0.24
0.29
CJ
4.5
4.8
4.3
0.25
0.098
4.53
-0.31
-0.27
CO
3.5
3.4
3.4
0.06
0.020
3.43
-0.95
-0.90
CP







•
cs
36.7
37:0
37.7;
0.51
0.197
37.13
18.51
18.55 x
cx
5.7
5.3
5.5
0.20
0.079
5.50
0.24
0.29
D
4.8
5.2
5.0
0.20
0.079
5.00
-0.04
0.00
DB
4.4
4.5
4.6
0.10
0.039
4.50
-0.33
-0.29
DD







•
DE
6.0
7.0
7.0
0.58
0.197
6.67
0.92
0.96
DI







. <.
-
DO
5.4
4.9
4.9
0.29
0.098
5.07
-0.01
0.04
DT
5.0
5.2
7.0
1.10
0.394
5.73
0.38
0.42
DZ
8.3
7.9
8.7
0.40
0.158
8.30
1.86
1.91
E
5.3
4.9
5.0
0.21
0.079
5.07
-0.01
0.04
EB
4.5
4.3
5.1
0.42
0.158
4.63
-0.26
-0.21
EL
4.0
4.2
4.0
0.12
0.039
4.07
-0.58
-0.54
E0







¦ •
• s No data submitted	TAG SYMBOLS	ft s Above control limit
0 = Inaufficient data	x = Determined to be an outlier	= Below control limit
-------
	

ESD-LV Performance Evaluation: Blind-A, 21-Apr-1998
> 1
26/30
Uranium (Natural)







Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation

Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
ER
5.2
5.1
4.8
0.21
0.079
5.03
-0.03
0.02

EY









EX








•
FE
4.1
cJ.y
4.1
0.12
0.039
4.03
-0.60
-0.56

'FF








•
FJ
5.5
5.5
5.5
0.00
0.000
5.50
0.24
0.29

FL









FN
2.8
2.0
2.3
°-40
0.158
2.37
-i.57
-1.52

GI









GQ
4.9
4.6
4.8
0.15
0.059
4.77
-0.18
-0.13

GZ








•
m









HK
5.1
5.2
5.3
0.10
0.039
5.20
0.07
0.12

HL
4.4
5.3
4.7
0.46
0.177
4.80
-0.16
-0.12

HP
5.2
5.2
5.4
0.12
0.039
5.27
0.11
0.15

I
4.9
5.1
4.8
0.15
0.059
4.93
-0.08
-0.04

ID
4.7
4.9
4.8
0.10
0.039
4.80
-0.16
-0.12

iu









J









JE
4.8
4.9
4.8
0.06
0.020
4.83
-0.i4
-0.10

JG








•
JM








•
JN
3.6
4.9
5.2
0.85
0.315
4.57
0.30
-0.25

JQ









JS
85.5
90.9
85.5
3.12
1.120
87.30
7,47
47.62
X
JY
4.5
5.0
4.3
0.36
0.138
4.60
0.28
-0.23

K
4.8
4.7
4.8
0.06
0.020
4.77
0.18
-0.13

EE









KT
5.0
5.5
6.0
0.50
0.197
5.50
0.24
0.29
;
EX









L
5.0
5.6
5.3
0.30
0.118
5.30
0.13
0.17

LE








\ •- •
LF
4.9
5.0
5.0
0.06
0.020
4.97
0.06
-0.02

LL








•
LR









.'liT*








' •










;MF


















: •
MT








r#
MY









MY








rV
N
5.7
5.1
4.9
0.42
0.158
5.23
0.09
0.13

NA
5.0
6.0
6.0
0.58
0.197
5.67
0.34
0.38

NH
5.4
3.3
4.0
1.07
0.413
4.23
-0.49
-0.44

• =
No data submitted

TAG SYMBOLS

ft = Above control limit
0 S
	
Insufficient data
x =
Determined to be an outlier
II = Below control limit
-------
ff	







	^
27/30
ESD-LV Performance Evaluation: Blind-A, 21-Apr-1998

r ...
Uranium (Natural)





\
Lab
Res. 1


Exper.
Rng anal

Normalized deviation
Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
NJ
5.1
4.8
4.9
0.15
0.059
4.93
-0.08
-0.04
NK








NO
4.5
5.5
6.5
1.00
0.394
5.50
0.24
0.29
0







•
OB
5.1
5.1
5.5
0.23
0.079
5.23
0.09
0.13
OF







•
OM








OS
4.7
4.9
4.9
0.12
0.039
4.83
-0.14
-0.10
OY








P
5.4
6.1
7.7
142
0.512
6.07
0.57
0.62
PA








PB
4.1
4.1
4.0
0.06
0.020
4.07
-0.58
-0.54
PD








PG







9
PM








PW
17.6
20.6
20.0
1.59
0.591
19.40
8.27
8.31 x
Q
5.0
4.1
4.6
0.45
0.177
4.57
-0.30
-0.25
QM
5.4
5.2
4.8
0.31
0.118
5.13
003
0.08
QP








QQ
3.8
4.1
5.4
0.85
0.315
4.43
-0.37
-0.33
QT








QU
5.5
5.6
5.3
0.15
0.059
5.47
0.22
0.27
QW








QX
24.6
22.8
25.0
1.17
0.433
24.13
11.00
11.05 x
QY







•
QZ
4.8
4.9
4.8
0.06
0.020
4.83
-0.14
-0.10
KB







•
RD
4.8
4.8
4.8
0.00
0.000
4.80
-0.16
-0.12
RG
5.0
4.9
5.0
0.06
0.020
4.97
-0.06
-0.02
RI








RK
41.0
43.3
45.0
2.01
0.788
43.10
21.95
22.00 x
RP
5.0
4.8
4.9
0.10
0.039
4.90
-0.10
-0.06
RR







*
RU







•
RZ







•
S
4.5
4.7
4.9
0.20
0.079
4.70
-0.22
-0.17
SD
5.8
5.2
5.3
°\3.2
0.118
5.43
0.21
0.25 _
SF







v^ %,
SG








SI
5.2
5.0
5.1
0.10
0.039
5.10
0.01
0.06
SL
2.5
2.5
2.6
0.06
0.020
2.53
-1.47
-1.42
SM
5.2
5.0
5.3
0.15
0.059
517
0.05
0.10
SN







•
SO
6.3
5.0
6.5
0.81
0.295
5.93
0.49
0.54
SR







- v •
• =
No data submitted

TAG SYMBOLS

ft = Above control limit
in
Q
—')
Insufficient data
X H
Determined to be an outlier
= Below control limit
					4
-------
ESD-LV Performance Evaluation: Blind-A, 21-Apr-1998	28 / 30
Uranium (Natural)







Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation

Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
SS
5.0
4.9
5.1
0.10
0.039
5.00
-0.04
0.00

SX
4.8
5.0
5.2
0.20
0.079
5.00
-0.04
0.00

sz
4.7
5.0
4.9
0.15
0.059
4.87
-0.12
-0.08

T
6.2
6.2
6.3
0.06
0.020
6.23
0.67
0.71

TD
4.9
4.8
4.8
006
0.020
4.83
-0.14
-0.10

TL






' s '
^ v . . . - . s
•
m
' ''
* T" .:'
' i.
X
• -
#•/<" "
-SvV, *
r'' • f

TQ
5.3
5.3
5.2
006
0020
5.27
o.n
0.15

TS
t ^


. " 'V- ^ -



•
•
TU
5.4
5.1	
5.2
°-15
0.059
5.23
0.09
0.1.3

TY
.' V - - - ^

v .. ..
- - , ,
***"T?	
- ° - -


•
U
5.8
_ 5.8
5.9
0.06
0.020
5.83
0.44
0.48

UA

¦\J-*y~ v, -
' ^ ''> /
'' *J *• ¦"• ?M '• •" '-
<• ^ 5" / ' /-"V.. ^

< "•  sV / A
s/. f: * * J-
"•' -

V ^ ,
;f -
* #
UM

'3 ;1

-'f;
•>" ' ""Vw^ S'V
,f
" • ' v ^ 1 V

k * >
UP
.. ,4£
	 4.2
5.3
0.55
0.217
4.77
-0,18
-O-13

UQ

- •¦ A«<'%*V '**3?
*, * N *,-*»•> ' " ' •• -
\ -W- v^.. - V -A
\ >*"





UY
* ' < •¦ ^
"•'o* / >


' "" Sv

' ; :' ': >
V', >'\--
•
VA
5.4
4.9
6.4
0.76
0.295
5.57
0.28
0.33

VC

/ ' - '
..J"/" '•
••• * • ' • *
; • •



•
VH
6.0
5.6
5.9
0.21
0.079
5.83
0.44
0.48

VI
5.4
5.3
5.0
0.21
0.079
5.23
0.09
013

VJ


s \ ^





•
VM

\






•
VO
5.6
4.8
4.9
0.44
0.158
5.10
0.01
0.06

VT
: ,
- » ' *
V ; ¦



*^7

•
W
	5.1
	5.2
		5A
O-10
0.039
5.20
0.07
P-12

WE
• / ' ' "s \-v

i V ;if ¦'/ j " , ¦¦¦•
,£• * *\ < r -
'? '•••'¦K''' r 7-
ys> , >•, " ''
"¦ ',NV s'
- ,5

WH
4.1
4.6
'""*5.1
0.50
0.197
4.60
-0.28
-0.23

WO
5.0
4.6
4.7
0.21
0.079
4.77
-0.18
-0.13

WR
5.0
5.0
5.1
006
0.020
5.03
-0.03
0.02

WW





-T'-'V "'TV' ^w


•V • '
X
4.5
4.5
4.4
0.06
0.020
4.47
-0.35
-0:31

XA
9.8
6.6
9.3
1.72
0.630
8.57
201
2.06

;xc
\\ ,' /;\C ff*'?


-i \' "v V "
* *¦ "C '¦ ''i >' «'
^ ^ /' "
' " 'X - \


.
IXB
:x0-

\y' t.-' ' ¦> '* %?' v
. /
ST /' ¦'.
S v/^ v
'•/'-y' \ __*i.> i s^s»*
y~Si,
¦;"' ,<=¦ ¦: ^ ^;:v' ¦. s':x.
"-A ^ J » y''( Z.
' • "
f ^
V * V
XI
5.3
5.5
J 5.5^
^ 0.12
0.039
_m5.43_
0.21
0.25

C \ 'y'** ¦ x ' ¦
^ ^ /v_, ''j
i'.-i.}} •"

¦¦¦ V"'
•; V. ,y _
•• <,'
:; x\ v % :
¦¦}>
:¦
;
XL
5.7
5.3
' * 5^6 *
0.21
0.079
5.53
0.26
0^31

XM
4.5
4.6
4.5
0.06
0.020
.. 4-53
. SB1
-0.21

V5AAA v v^-va w^
i-XN,'
¦>, *-S" « • >r*v
' 'Ss* fSr \ <¦• ¦ >A 'v- ^ -r
v':"
>• s "> •..•¦,•'¦• > '/'/ t '
V A* '' ¦1 ^ N
• \ ,
' /•: ^V'"v J
" fVs
'V " "" '<"+< '

xp- . -'
'k i- -v

xp.
7 ',',,~1> s. „> ~
i«?k-'¦¦*?A "¦*•?'!
H. £-v'S S>S '•OwiJ.'v. >¦
'> -'A'/ ¦/' -
' v ' . ' >t>


^ ^"•i' c C „
' •• V V Js ' '
^ y> a

• =
No data submitted

TAG SYMBOLS

1T = Above control limit
0 s
Insufficient data
X -
Determined to be an outlier
JJ = Below control limit
-------
29/30
ESD-LV Performance Evaluation: Blind-A, 21-Apr-1998
Uranium (Natural)
Lab Res. 1 Res. 2
Exper. Rng anal	Nonnalized deviation
Res. 3	Sigma (R + SR) Average (grand-avg) (known) Tag
XQ
XR
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
2.37

FN
4.83

J£
5.30

AZ
2.53

SL
4.87

SZ
5.30

AE
3.43

CO
4.87

c
5.33

BM
3.77

BN
4.90

RP
5.43

XI
4.03

FE
4.93

NJ
5.43

SD
4.07

PB
4.93

I
5.47

QU
4.07

EL
4.93

A
5.47

BA
4.17

BB
4.97

RG
5.50

NO
4.23

NH
4.97

LF
5.50

KT
4.43

QQ
4.97

AH
5.50

FJ
4.43

AR
5.00

SX
5.50

CX
4.47

X
5.00

SS
5.50

CE
4.50

DB
5.00

D
5.53

XL
4.53

XM
5.03

WR
5.53

BK
4.53

CJ
5.03

ER
5.57

VA
4.57

Q
5.07

CA
5.60

AF
4.57

JN
5.07

E
5.67

NA
4.60

WH
5.07

DO
5.73

DT
4.60

JY
5.10

VO
5.80

AL
4.63

BO
5.10

SI
5.83

VH
4.63

EB
5.13

QM
5.83

U
4.70

AJ
5.17

SM
5.93

BH
4.70

S
5.17

AW
5.93

SO
4.77

WO
5.20

W
6.07

P
4.77

UP
5.20

HK
6.23

T
4.77

K
5.20

BC
6.37

AK
4.77

GQ
5.23

TU
6.67

DE
4.80

RD
5.23

OB
8.30

DZ
4.80

ID
5.23

N
8.57

XA
4.80

HL
5.23

VI
19.40
X
PW
4.83

TD
5.27

TQ
24.13.
X
QX
4.83

QZ
5.27

HP
37.13
X
CS
4.83

OS
5.30

L
43.10
87.30
X
X
RK
JS
• = No data submitted	TAG SYMBOLS	ft = Above control limit
0 = Insufficient data	x >¦ Determined to be an outlier	U- = Below control limit
V'		v
-------
ESD-LV Performance Evaluation: Blind-A, 21-Apr-1998
30/30
Uranium (Natural)
% responding labs	Frequency distribution
20-
10-
-1	1	»	1	I— T""""T	T	T	I	I	1	1—
-6	-4	-2	0+2+4	+6
Normalized deviation of the mean from the known value
responding labs	Frequency distribution	
20«
10-
o

-6	-4	-2	0+2+4	+6
Normalized deviation of the mean from the grand average
-------
c
United States	Office of Research and	EPA/600/R-98/121B
Environmental Protection	Development	September 1998
Agency	Washington, DC 20460
&EPA Blind-B Performance
Evaluation Study
A Statistical Evaluation
of the April 21, 1998 Data
006ECB98-121b
-------
Blind-B
Performance Evaluation Study
April 21, 1998
Environmental Protection Agency
National Exposure Research Laboratory
Environmental Sciences Division
Las Vegas, Nevada
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
OFFICE OF RESEARCH AND DEVELOPMENT
NATIONAL EXPOSURE RESEARCH LABORATORY
ENVIRONMENTAL SCIENCES DIVISION-US VEGAS
P.O. BOX 93478
LAS VEGAS, NEVADA 89193-3478
(702/798-2100)
Dear Participant,
Enclosed are the results of the Environmental Sciences Division (ESD-LV)
Performance Evaluation Study for Blind-B; April 21, 1998.
The known value for each analysis was determined by gravimetric methods,
checked by chemical analyses performed by ESD-LV's Radiochemistry Laboratory,
and compared to the participating laboratories' grand average.
The expected precision, determined by the known value, was taken from
"Table 3. Laboratory Precision: One Standard Deviation Values and Control Limits
for Various Analyses", which is based on data accumulated over the years by the
Performance Evaluation Program, and can be found in the Environmental Radioactivity
Performance Evaluation Studies Program and Radioactive Standards Distribution
Program information brochure.
Please take a few minutes to review this report and the analytical data your
laboratory submitted to us. If there are any apparent discrepancies, please notify us
immediately.
We encourage you to make use of the computer-automated data-entry system
that has been in place for some time now. As the number of participants increases,
and it becomes unrealistic for us to receive results by mail or FAX, the computer
system will be our only avenue for accepting data.
If you have any questions or comments, please send a message via the data-entry
system or contact Stephen Pia at 702/798-2102 or Patricia Honsa at 702/798-2141.
Sincerely, /)
Stephen Pia
Team Leader
RADQA Program
Enclosure
-------
NOTICE
This material has been funded wholly by
the U.S. Environmental Protection Agency.
It has been subjected to the Agency's review,
and has been approved for publication as
an EPA document.
-------
ESD-LV Performance Evaluation: Bltnd-B, 21-Apr-1998	1/44
The following pages consist of separate sections for each of the nuclides in this study with four
parts per section. After the first, each part is separated from the next by a new page or a thick
horizontal bar. The first page of each section is a statistical summary for the nuclide and starts
with a statement of the known value, the control limits, and the warning limits.
The warning limits are placed at two normalized standard deviations above and below the
known value and the control limits are three normalized standard deviations above and below
the known value. If you keep control charts, these values will be useful for anticipating problems
with the accuracy of your analytical methods.
The coin shaped pie chart at the top of the summary page shows the fate of all the samples
sent out in number and percentage terms. The pie chart starts at the top and rotates clockwise.
The first sector represents those participants who submitted analytical results within both the
warning and control limits. The next sector represents those who are in the warning region hut
not out of control. The third sector represents those who are out of control, but have passed
the outlier test. The fourth sector represents those who have failed the outlier test. The last
sector represents those participants who have failed to respond properly. This is the case if no
analytical results were returned, or less than three determinations were reported, or if the results
were received too late. The reeding on the edge of the coin is spaced at one percent intervals, and
the sector shading becomes darker as the data reliability decreases. Sectors with zero width are
not shown.
The table in the center shows a number of statistical quantities calculated from the submitted
data based on the mean and median values in relation to the known value, both before and after
outlier removal. The lower pie chart uses the same construction as the upper chart and shows
the distribution of properly submitted data in terms of deviation from the known value divided
into sectors representing one, two, three, and greater than three normalized standard deviations.
The second part i3 an alphabetical listing, in lab-code order, of submitted data and several
calculated quantities. An entry that is shaded has been rejected because of one of the reasons
listed above or failure of the outlier test. The fifth and sixth columns are a measure of laboratory
precision. The Bange analysis is a normalized value that you may use to keep precision control
charts. The eighth and ninth columns are the differences from the mean of all non-outliers and
from the known value, respectively. If this value is between 2.0 and 3.0, your analytical process
precision is in the warning zone; if it exceeds 3.0 it is out of control. A tag symbol may appear in
the last column. Each page with tags has a symbol definition summary at the bottom. If there is
no tag symbol, the data is within the control limits, but it may be in the warning zone.
The third part is a three-column listing of result average, tag symbol, and lab-code in average
order excluding those labs not responding properly. In this order, all outliers and out-of-control
results appear at the top or bottom of the list.
The last part is two bar chart displays showing frequency distributions of responding
participants. The fiiBt chart places the known value at the center and a bar at each 0.2 unit of
expected precision. The second chart places the mean of the reported measurements at the center
and a bar at each 0.2 unit of standard deviation. In both cases, a bar includes those results within
0.1 unit up to the maximum of six. Any results more than six units from the center value are
shown cumulatively by a shaded bar one past the sixth unit. If the central tendency of the known
value distribution falls away from the center, an error in accuracy is indicated. If the distribution
is broad, poor precision is indicated. The mean value distribution is similar but uses the average
and standard deviation of reported results as its basis.
-------
2/44	ESD-LV Performance Evaluation: Blind-B, 21-Apr-1998
The Range Analysis(R + SR) is calculated from the range, mean range and standard error of
the range values The range is the difference between the maximum and minimum results Fnr the
laboratory. The mean range is calculated by multiplying the expected precision by 1.693(for three
results). The standard error of the range is calculated by multiplying the mean range by 2.575(for
three results), eubtracting the mean range from this product, and dividing the result by 3. If the
range is greater than the mean range, then the range analysis is calculated by subtracting the
mean range from the range, dividing the result by the standard error of the range and adding 1.
If the mean range is greater than or equal to the range, then the range analysis is calculated by
dividing the range by the mean range.
The normalized deviation of the mean from the grand average is calculated from the deviation
of the mean from the grand average and the standard error of the mean values. The deviation of
the mean from the grand average is calculated by subtracting the grand average from the
average of the laboratory's three results. The standard error of the mean ia calculated by
dividing the expected precision by the square root of 3(the number of results). The normalized
deviation of the mean from the grand average is calculated by dividing the deviation of the mean
from the grand average by the standard error of the mean.
The normalized deviation of the mean from, the known value is calculated from the deviation of
the mean from the known value and the standard error of the mean values. The deviation of the
mean from the known value is calculated by subtracting the known value from the average of the
laboratory's three results. The standard error of the mean is calculated by dividing the expected
precision by the square root of 3(the number of results). The normalized deviation of the mean
from the known value is calculated by dividing the deviation of the mean from the known, value by
the standard error of the mean.
A complete explanation of the statistical calculations involved in the report may be found in
the Environmental Radioactivity Performance Evaluation Studies Program information brochure
[Draft Revision of EPA-600/4-81-004], available from Patricia Honsa, ESD-LV, 702/798-2141.
-------
ESD-LV Performance Evaluation: Blind-B, 21-Apr-1998
3/44
Gross Beta	Statistical Summary	182 Participants
The known value of this nuclide is 94.7 pCi/1 with an expected precision of 10.0; the control limits
are 77.4 to 112.0; the warning regions are 77.4 to 83.1 and 106.3 to 112.0
48(26.4 %) Failed to respond
93(51.1 %) Within all limits
9(4.9 %) Outliers •' /\K_ .
6(3.3 %) Out o( control •"
\J JS. '
but not an outlier
i
Statistic
111
Respondents
26(14.3 %) In warning zone
but within control
Non-outliers
Mean
98.78
Grand Avg 97.73
Std. Dev.
20.27
9.53
Variance
410.79
90.90
% Coef. of Var.
20.52
9.76
% deviation of mean from known value
4.31
3.20
Norm. dev. of mean from known value
0.20
0.32
Median
98.93
98.87
% deviation of median from known value
4.47
4.40
Norm. dev. of median from known value
0.21
0.44
15(11.2 %) More than 3 norm. S.D.
26(19.4 %) Between 2 and 3 norm. S.D.
• 47(35.1 %) Within 1 norm. S.D.
of known value
46(34.3 %) Between 1 and 2 norm. S.D
-------
f,f	








	^
4/44
ESD-LV Performance Evaluation: Blind-B, 21-Apr-1998


Gross Beta








Lab
Res. 1


Exper.
Rng anal

Normalized deviation

Reg. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
A
106.2
95.3
101.7
5.48
0.644
101.07
0.58
1.10

AE
83.9
85.1
83.7
0.76
0.083
84.23
-2.34
-1.81

AF
110.9
112.4
112.3
0.84
0.089
111.87
2.45
2.97

AH
113.3
122.1
125.2
6.17
0-703
120.20
3.89
4.42
f?
AJ
84.7
86.1
88.0
1.66
0.195
86.27
-1.99
-1.46

AK
S5.S
&5.4
97.1
0.93
0100
96.03
-0.29
0.23

AL
98.1
101.5
98.2
1.94
0.201
99.27
0.27
0.79

AP







,
•
Aft
204.8
196.7"
201.9
4.10
0.478
201.13
17.91
18.43
X
AU
105.1
104.0
100.9
2.18
0.248
103.33
0.97
1.50

AW
92.9
93.2
95.4
1.37
0.148
93.83
-0.67
-0.15

AZ
96.5
101.0
102.0
2.93
0.325
99.83
0.36
0.89

BA
98.5
81.2
83.1
9.49
1.042
87.60
-1.75
-1.23

BB
99,9
100.9
95.8
2.70
0.301
98.67
0.20
0.72

BC
96.8
90.0
98.3
4.42
0.490
95.03
-0.47
0.06

BG

* -






•
BH
103.2
102.9
104.2
0.68
0.077
103.43
0.99
1.51

BK
102.0
105.0
106.0
2.08
0.236
104.33
1.14
1.67

BL








•
BM
99.6
100.0
100.2
0.20
0.024
100.00
0.39
0.92

BN
85.3
84.1
85.5
0.76
0.083
84.97
-2.21
-1.69

BO
89.0
94.0
96.0
3.61
0.413
93.00
-0.82
-0.29

BS
98.0
94.8
98.8
2.12
0.236
97.20
-0.09
0.43

BW








«
C
102.8
101.1
105.3
2.11
0.248
103.07
0.92
1.45

CA
95.8
90.4
90.2
3.18
0.331
92.13
-0.97
¦0.44

CC








*
CE
98.9
94.0
102.9
4.46
0.526
98.60
0.15
0.68

CJ
101.0
109.0
96.0
6.56
0.768
102.00
0.74
1.26

CO
85.1
81.1
81.8
2.14
0.236
82.67
-2.61
-2.08

CP








•
cs
79.4
80.6
83.7
2.22
0.254
81.23
-2.86
-2.33

cx
84.7
82.9
80.3
2.21
0.260
82.63
-2.61
-2.09

D
106.3
105.1
104.3
1.01
0.118
105.23
1.30
1.82

BB
101.0
103.0
97.0
3.06
0.354
100.33
0,45
0.&8

DD
69.7
88.4
919
1.77
0.207
90.00
-1.34
-0.61

DE
98.2
98.4
98.6
0.20
0.024
98.40
0.12
0.64

DI

~ --^r - ¦"






» -
DO
"¦ -







, ~
DT
109.9
109.8
111.8
1.13
0.118
110.50
2.21
2.74

DZ
107.6
111.3
109.1
1.86
0.219
109.33
2.01
2.53

E
102.2
101.6
102.1
0.32
0.035
101.97
0.73
1.26

EB
96.8
95.7
96.7
0,61
0.065
96.40
-0.23
0.29

EL








• ¦
EO
99.0
99-0
97.0
1.15
o.na
93 33
D.10
0.63

• s
No data submitted

TAG SYMBOLS

ft = Above control limit
U-
Insufficient data
X S
Determined to be an outlier
= Below control limit
-------
ESD-LV Performance Evaluation: Blind-B, 21-Apr-1998	5/44
Gross
Lab
Beta
Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known 1 Tap
ER








•
EV
106.3
108.4
115.4
4.76
0.538
110.03
2.13
2.66

EX
108.6
133.9
101.9
16.88
2.695
114.80
2.96
3.48
ft
FE
98.6
99.2
99.2
0.35
0.035
99.00
0.22
0.74

FF
78.2
77.5
82.5
2.71
0.295
79.40
-3.17
-2.65

FJ








•
FL
88.8
89.7
93.3
2.38
0.266
90.60
-1.23
-0.71

FN:
52.0
.4816';
47.0
265
0.295
49.00
-8.44
-7.92
X
GI








«
GQ
98.8
98.8
98.9
0.07
0.006
98.83
0.19
0.72

GZ
94.7
93.2
89.2
2.84
0.325
92.37
-0.93
-0.40

ffl
72.3 V
41,4
47.6
16.35
2.572
53.77
-7,61
-7.09
X
HK
104.1
106.6
.04.8
1.29
0.148
105.17
1.29
1.81

HL
98.5
98.0
98.9
0.45
0.053
98.47
0.13
0.65

HP
99.3
101.0
100.0
0.85
0.100
100.10
0.41
0.94

I
97.2
102.6
103.5
3.41
0.372
101.10
0.58
1.11

ID
89.1
91.7
92.1
1.63
0.177
90.97
-1.17
-0.65

IU









J









JE
108.9
1101
108.6
0.79
0.089
109.20
199
251

JG








•
JM
107.0
107.0
110.0
1.73
0.177
108.00
1.78
2.30

JN
99.3
96.4
91.8
3.78
0.443
95.83
-0.33
0.20

JQ
153.0
150.0r
160.0
1.73
0.177,
151.00
9.23
9.75
X
JS
102.4
104.3
102.2
1.16
0.124
102.97
0.91
1.43

JY
93.4
90.5
87.7
2.85
0.337
90.53
-1.25
-0.72

K
77.6
79.6
80.3
1.40
0.159
79.17
-3.21
-2.69

KE
206,1
210.7
214.7
4.30
0.508
2HK50
19.63
20.06
X
KT
138,0
140.0
142.0
2.00
0.236
140.00
7132
7.85
X
KX
105.6
105.2
103.5
1.12
0.124
104.77
1.22
1.74

L
87.8
88.2
88.3
0.26
0.030
88.10
-1.67
-1.14

LE








. •
LF
82.0
100.0
80.0
11.02
1.345
87.33
-1.80
-1.28

LL
108.9
98.1
92.1
8.51
0.992
99.70
0.34
0.87

LR
111.0
111.0
111.0
0.00
0.000
111.00
2.30
2.82

LT









M








«
MF
103.6
105.0
102.0
1.50
0.177
103.53
1.01
1.53

ME













- »




¦ *
MV
109.9
3.1.4.4
109.1
2.86
0.313
111.13
2.32
2.85

MY








. «
N
97.7
98.1
100.5
1.51
0.165
98.77
0.18
0.70

NA
106.0
97.0
108.0
5.86
0.650
103.67
1.03
1.55

NH
93.0
95.0
93.0
1.15
0.118
93.67
-0.70
-0.18

• = No data submitted	TAG SYMBOLS	ft s Above control limit
^_0j=_In8ufficieat data	x = Determined to be an outlier	JJ- s Below control limil
-------
ESD-LV Performance Evaluation: Blind-B, 21-Apr-1998
Gross Beta
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
NJ
93.4
90.7
98.6
4.02
0.467
94.23
-0.61
-0.08
NK








NO
98.0
100.0
102.0
2.00
0.236
100.00
0.39
0.92
O
105.3
104.9
104.9
0.23
0.024
105.03
1.27
1.79
OB
94.0
91.4
97.1
2.85
0.337
94.17
-0.62
-0.09
OF
79.9
89.1
92.7
6.60
0.756
87.23
-1.82
-1.29
OM







•
OS
91.0
86.0
89.0
2.52
0.295
88.67
-1.57
-1.05
OY








P
117.6
95.7
85. i
16.57
2.752
99.47
0.30
0.83
PA








PB
106.5
105.0
105.8
0.75
0.089
105.77
1.39
1.92
PD
126.3
118.2
108.8
8.76
1.064
117.77
3.47
4.00 ft
PG








PM
107.0
103.0
95.7
5.73
0.667
101.90
0.72
1.25
PW







•
Q
109.8
111.7
107.5
2.10
0.248
109.67
2.07
2.59
QM
105.7
105.5
106.7
0.64
0.071
105.97
1.43
1.95
QP
91.4
86.1
85.3
3.31
0.360
87.60
-1.75
-1.23
QQ
91.1
93.1
92.6
1.04
0.118
92.27
-0.95
-0.42
QT
102.6
105.8
103.7
1.63
0.189
104.03
1.09
1.62
QU
114.0
107.8
100.7
6.66
0.786
107.50
1.69
2.22
QW
105.3
104.1
106.4
1.15
0.136
105.27
1.31
1.83
QX
106.8
107.0
107.2
0.20
0.024
107.00
1.61
2.13
QY







*
QZ
78.8
77.3
77.6
0.79
0.089
77.90
-3.43
-2.91
RB
110.0
105.0
105.0
2.89
0.295
106.67
1.55
2.07
RD
95.4
93.1
100.7
3.90
0.449
96.40
-0.23
0.29
RG
102.0
109.0
107.0
3.61
0.413
106.00
1.43
1.96
RI
107.2
105.7
111.2
2.84
0.325
108.03
1.79
2.31
RK
81.5
82.3
90.0
4.69
0.502
84.60
-2.27
-1-75
RP







*
RR







•
RU







¦ •
RZ







•
S
101.4
106.8
105.8
2.87
0.319
104.67
1.20
1.73
SD
106.3
111.0
108.7
2.35
0.278
108.67
1.89
2.42
SF








SG
88.1
97.9
99.2
6.07
0.656
95.07
-0.46
0.06
SI
90.9
88.2
90.1
1.39
0.159
89.73
-1.38
-0.86
SL
88.9
92.0
93.0
2.14
0.242
91.30
-1.11
-0.59
SM
84.5
85.2
81.7
1.85
0.207
83.80
-2.41
-1.89
SN
96.0
99.0
98.0
1.53
0.177
97.67
-0.01
0.51
SO
103.7
102.8
103.1
0.46
0.053
103.20
0.95
1.47
SR
87.0
93.6
81.0
6.30
0.744
87.20
-1.82
-1.30
• =
No data submitted

TAG SYMBOLS

ft = Above control limit
I 0 s Insufficient data	x = Determined to be an outlier	11 = Below control limit
V1		V
-------
ESD-LV Performance Evaluation: Blind-B, 21-Apr-1998
7/44
Gross Beta
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
tgrand-avg) (knowv'i Tag
88
85.1
86.2
85.2
0.61
0.065
85.50
-2.12
-1.59

SK
107.1
112.4
93.9
9.53
1.177
104.47
1.17
1.69

SZ
95.4
92.8
93.7
1.90
0.219
93.30
-0.77
-0.24

T
93.9
101.9
101.5
1.06
0.118
101.10
0.58
1.11

TD
148,4
162.8
148.5
2.51
0.260
149.90
9 04
9.56
X
TL








•
TN
83.9
81.1
82.8
1.41
0.165
82.60
-2.62
-2.10

TQ
107.7
105.7
108.9
1.62
0.189
107.43
1.68
2.21

T8








*
TO
42.3
23.6
20.1
11.94
1.593
28.67
-11,96
-11.44
X
TY
99.9
102.0
100.1
1.16
0.124
100.67
0.51
1.03

U
89.9
93.0
94.2
2.22
0.254
92.37
-0.93
-0.40

UA









VK








• .
UM



....




>
UP
86.7
76.7
78.4
5.35
0.591
80.60
-2.97
-2.44

UQ
96.8
95.5
97.6
1.06
0.124
96.63
-0.19
0.33

UY
88.0
86.4
87.8
0.87
0.095
87.40
-1.79
-1.26

VA
109.1
96.2
125.7
14.79
2.414
110.33
2.18
2.71

vc








<9'
VH
103.2
98.3
102.6
2.67
0.289
101.37
0.63
1.15

VI
121.1
120.7
119.0
1.12
0.124
120.27
3.90
4.43
ft
VJ
37.1
36,7
37.4
0.35
0.041
37.07
-10.51
-9.98
X
YM









VO








•
VT
109.2
107.5
104.1
2.60
0.301
106.93
1.59
2.12

W








*
WE
91.1
102.8
103.4
6.93
0.727
99.10
0.24
0.76

WH
86.7
99.1
93.3
6.20
0.732
93.03
-0.81
-0.29

WO
94.9
83.7
90.6
5.65
0.662
89.73
-1.38
-0.86

WR
86.6
88.7
89.7
1.58
0.183
88.33
-1.63
-1.10

WW
103.1
85.5
95.9
8.85
1.075
94.83
-0.50
0.02

X
108.3
99.4
113.4
7.09
0.827
107.03
1.61
2.14

XA








*
XC








*
Xl>









XF
103.5
104.2
107.7
2.25
0.248
105.13
1.28
1.81

XI
100.0
110.0
100.0
5.77
0.591
103.33
0.97
1.50

XJ
86.1
85.6
83.3
1.49
0.165
85.00
-2.20
-1.68

XK
106.0
101.0
104.0
2.52
0.295
103.67
1.03
1.55

XL
89.5
93.6
97.7
4.10
0.484
93.60
-0.71
-0.19

XM
95.4
98.6
97.0
1.60
0.189
97.00
-0.13
0.40

XN
72.7
71.4
72.7
0.75
0.077
72.27
-4.41
-3.69
tt
xo








».
XP








*
• .3
0S
No data submitted
Insufficient data
X s
TAG SYMBOLS
Determined to be an outlier
tt s Above control limit
¦it s Below control limit
-------

8/44
ESD-LV Performance Evaluation: Blind-B, 21-Apr-1998
Gross Beta
Lab Res. 1
Exper. Rng anal	Normalized deviation
Res. 2 Res. 3 Sigma (R + SR) Average (grand-avg) (known) Tag
XQ
XR
90.1
68.7
72.4
sfrVWSIr'rKiJi'*
11.44
1.503
77.07
-3.58
-3.05 U
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
28.67
X
TU
92.37

GZ
101.10

T
37.07
X
VJ
93.00

BO
101.37

VH
49.00
X
FN
93.03

WH
101.90

PM
53.77
X
HI
93.30

sz
101.97

E
72.27
11
XN
93.60

XL
102.00

CJ
77.07
11
XQ
93.67

NH
102.97

JS
77.90

QZ
93.83

AW
103.07

c
79.17

K
94.17

OB
103.20

so
79.40

FF
94.23

NJ
103.33

XI
80.60

UP
94.83

WW
103.33

AU
81.23

cs
95.03

BC
103.43

BH
82.60

TN
95.07

SG
103.53

MF
82.63

cx
95.83

JN
103.67

XK
82.67

CO
96.03

AK
103.67

NA
83.80

SM
96.40

RD
104.03

QT
84.23

AE
96.40

EB
104.33

BK
84.60

RK
96.63

UQ
104.47

SX
84.97

BN
97.00

XM
104.67

s
85.00

XJ
97.20

BS
104.77

KX
85.50

ss
97.67

SN
105.03

o
86.27

AJ
98.33

EO
105.13

XF
87.20

SR
98.40

DE
105.17

HK
87.23

OF
98.47

HL
105.23

D
87.33

LF
98.60

CE
105.27

QW
87.40

UY
98.77

N
105.77

PB
87.60

BA
98.83

GQ
105.97

QM
87.60

QP
98.87

BB
106.00

RG
88.10

L
99.00

FE
106.67

RB
88.33

WR
99.10

WE
106.93

VT
88.67

OS
99.27

AL
107.00

QX
89.73

WO
99.47

P
107.03

X
89.73

SI
99.70

LL
107.43

TQ
90.00

DD
99.83

AZ
107.50

QU
90.53

JY
100.00

NO
108.00

JM
90.60

FL
100.00

BM
108.03

RI
90.97

ED
100.10

HP
108.67

SD
91.30

SL
100.33

DB
109.20

JE
92.13

CA
100.67

TY
109.33

DZ
92.27

QQ
101.07

A
109.67

Q
92.37

U
101.10

I
110.03

EV
• = No data submitted
0 s Insufficient data

TAG SYMBOLS
x s Determined to be an
outlier
ft
= Above control limit
s Below control limit
-------
ESD-LV Performance Evaluation: Blind-B, 21-Apr-1998
9/44
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
110.33

VA
111.87

AF
140.00
X
KT
110.50

DT
114.80
It
EX
149.90
X
TD
111.00

LR
117.77
ft
PD
151.00
X
JQ
111.13

MV
120.20
ft
AH
201.13
X
AR



120.27
ft
VI
210.50
X
KE
Gross Beta
Data sorted by Laboratory Average
% responding labs
Frequency distribution
J ¦¦	¦Ml.
-4	-2	0	+2	+4
Normalized deviation of the mean from the known value
-6
+6
responding labs
Frequency distribution
¦Byllly
2	0	+2
-6
-4	-2	0	+2	+4
Normalized deviation of the mean from the grand average
+6
• = No data submitted
0 = Insufficient data
TAG SYMBOLS
x = Determined to be an outlier
IT = Above control limit
II s Below control limit
-------
ESD-LV Performance Evaluation: Blind-B, 21-Apr-1998
10/44
Strontium-89	Statistical Summary	182 Participants
The known value of this nuclide is 6.0 pCi/1 with an expected precision of 5.0; the control limits
are 0.0 to 14.7; the warning regions are 0.0 to 0.2 and 11.8 to 14.7
121(66.5 %) Failed to respond ,
4(2.2 %) Outliers
Statistic
, 56(30.8 %) Within all limits
Respondents
1(0.5 %) In warning zone
but within control
Non-outliers
Mean
8.70
Grand Avg 6.15
Std. Dev.
11.10
2.53
Variance
123.24
6.40
% Coef. of Var.
127.53
41.16
% deviation of mean from known value
45.08
2.44
Norm. dev. of mean from known value
0.24
0.06
Median
6.33
5.67
% deviation of median from known value
5.56
-5.56
Norm. dev. of median from known value
0.03
-0.13
4(6.6 %) More than 3 norm. S.D. »
1(1.6 %) Between 2 and 3 norm. S.D.
; 44(72.1 %) Within 1 norm. S.D.
of Known value
12(19.7 %) Between 1 and 2 norm. S.D.
-------
(,	








	^
11/44
ESD-LV Performance Evaluation: Blind-B, 21-Apr-1998


Strontium-89







s
Lab
Res. 1


Exper.
Rng anal

Normalized deviation

Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
A
6.0
4.0
5.0
1.00
0.236
5.00
-0.40
-0.35

AE
4.0
5.0
5.0
0.58
0.118
4.67
-0.51
-0.46

AF
7.0
7.0
6.0
0.58
0.118
6.67
0.18
0.23

AH








•
AJ
11.0
12.0
10.0
1.00
0.236
11.00
1.68
1.73

AK
7.0
7.0
3.0
2.31
0.473
5.67
-0.17
-0.12

AL
8.0
8.0
8.0
0.00
0.000
800
0.64
0.69

AP








•
AR








•
AU








•
AW
5.0
6.0
7.0
1.00
0.236
6.00
-0.05
0.00

AZ
8.0
7.0
7.0
0.58
0.118
7.33
0.41
0.46

BA
11.0
11.0
14.0
1.73
0.354
1200
2.03
2.08

BB








•
BC








•
BG








•
BH
4.0
7.0
13.0
4.58
1.120
8.00
0.64
0.69

BK








•
BL
8.0
9.0
8.0
0.58
0.118
8.33
0.76
0.81

BM
10.0
9.0
6.0
2.08
0.473
8.33
0.76
0.81

BN








•
BO
9.0
8.0
6.0
1.53
0.354
7.67
0.53
0.58

BS








•
BW








•
C
4.0
5.0
4.0
0.58
0.118
4.33
-0.63
-0.58

CA
5.0
4.0
7.0
1.53
0.354
5.33
-0.28
-0.23

CC








•
CE








•
CJ
4.0
6.0
4.0
1.15
0.236
4.67
-0.51
-0.46

CO








•
CP








•
cs
29.0
32:0
31.0
1.53
0.354
30.67
8.49
. 8.54
X
cx
4.0
5.0
6.0
1.00
0.236
5.00
-0.40
-0.35

D
8.0
7.0
6.0
100
0.236
7.00
0.30
0.35

DB








•
DD
4.0
5.0
5.0
0.58
0.118
4.67
-0.51
-0.46

DE
6.0
7.0
7.0
0.58
0.118
6.67
0.18
0.23

DI








•
DO
8.0
8.0
6.0
1.15
0.236
7.33
0.41
0.46

DT
1.0
1.0
1.0
0.00
0.000
1.00
-1.78
-1.73

DZ








• -
E
8.0
9.0
6.0
1.53
0.354
7.67
0.53
0.58

EB
3.0
4.0
6.0
1.53
0.354
4.33
-0.63
-0.58

EL
1.0
1.0
10
0.00
0.000
1.00
-1.78
-1.73

EO








•
• =
No data submitted

TAG SYMBOLS

ft = Above control limit
1 0 =
	
Insufficient data
x =
Determined to be an outlier
J1 = Below control limit
		jj
-------
	







	^
\

ESD-LV Performance Evaluation: Blind-B
21-Apr-1998
12/44
'
Strontium-89







Lab
Res. 1


Exper.
Rng anal

Normalized deviation
Res. 2
Res. 3
Sigma
(R + SR) Average
(grand-avg)
(known) Tag
ER







•
EV








EX








FE
4.0
4.0
5.0
0.58
0.118
4.33
-0.63
-0.58
FF








FJ







•
FL








FN;








GI








GQ
5.0
5.0
5.0
0.00
0.000
5.00
-0.40
-0.35
GZ








m







•
HK
5.0
5.0
5.0
0.00
0.000
5.00
-°-40
-0.35
HL








HP
91.0
76.0
612,0
14.50
5.621
76.3a
24;31 :
24.36 x
I
9.0
9.0
11.0
1.15
0.236
9.67
1.22
i.27
ED







¥
IU







*
J








JE








JG








JM








JN







•
JQ







•
JS
7.0
12.0
8.0
2.65
0.591
9.00
0.99
1.04
JY
4.0
6.0
3.0
1.53
0.354
4.33
-0.63
-0.58
K
4.0
5.0
7.0
i.53
0.354
5.33
-0.28
-0.23
KE







*
KT







•
KX








L
7.0
7.0
7.0
0.00
0.000
7.00
0.30
0.35
LE







' •
LF
5.0
4.0
5.0
0.58
0.118
4.67
-0.51
¦0.46
LL








LR








LT








¦ m'x-







>v
MF








MP








MT








MV







•
MY







•
N
8.0
8.0
9.0
0.58
0.118
8.33
0.76
0.8i
NA








NH






-
•
• =
No data submitted

TAG SYMBOLS

IT = Above control limit
0 S
V'	
Insufficient data
x =
Determined to be an outlier

11 = Below control limit
-------
	


	^
13/44
ESD-LV Performance Evaluation: Blind-B, 21-Apr-1998

Strontium-89

",1
Lab

Exper. Rng anal Normalized deviation
Res. 1
Res. 2 Res. 3 Sigma (R + SR) Average (grand-avg)
(known) Tag
NJ
7.0
4.0 8.0 2.08 0.473 6.33 0.06
0.12
NK


»
NO


•
O


•
OB


•
OF


•
OM


•
OS


•
OY


•
P


•
PA


•
PB
2.0
2.0 2.0 0.00 0.000 2.00 -1.44
-1.39
PD


•
PG


•
FM


•
PW


•
Q
9.0
6.0 6.0 1.73 0.354 7.00 0.30
0.35
QM
1.0
2.0 2.0 0.58 0.118 1.67 -1.55
-1.50
QP



QQ


•
QT


•
Qu
11.0
12.0 12.0 0.58 0.118 11.67 1.91
1.96
QW
10.0
11.0 10.0 0.58 0.118 10.33 1.45
1.50
QX


•
QY


•
QZ
9.0
7.0 6.0 1.53 0.354 7.33 0.41
0.46
RB


•
RD


•
RG


•
ra


•
RK


•
BP


•
RR



EU


•
RZ


9
8


•
SD


*
SF



SG

43.0 41.0 3.06 0.709 40.33; 11.84

SI
37.0-
11M x
, 6L


•
SM
11.0
6.0 10.0 2.65 0.591 9.00 0.99
i.04
SN


•
SO


•
SR



• =
No data submitted TAG SYMBOLS ft = Above control limit
I0 =
Insufficient data x s Determined to be an outlier 11 = Below control limit
-------
6	^
ESD-LV Performance Evaluation: Blind-B, 21-Apr-1998	14 / 44
Strontium-89
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
fgrand-avg) (known) Tag
SS
4.0
4.0
4.0
0.00
0.000
4.00
-0.74
-0.69

SX








•
sz
1.0
1.0
1.0
0.00
0.000
1.00
-1.78
-1.73

T
3.0
4.0
5.0
1.00
0.236
4.00
-0.74
-0.69

TD
5.0
7.0
9.0
2.00
0.473
7.00
0.30
0.35

TL








•
TN








• .
TQ
5.0
4.0
5.0
0.58
0.118
4.67
-0.51
-0.46

TS








*
TU








' • ,
TY









U









UA








- •
UK








•
UM








•
UP
5.0
5.0
6.0
0.58
0.118
5.33
-0.28
-0.23

UQ








~
UY








, • t
VA
35.0
26.0
39.0
6.66
2.020
33.33
9.42
9.47
x :•
vc








•
VH
7.0
7.0
8.0
0.58
0.118
7.33
041
0.46

VI









VJ








~ _'
VM








•
VO








•
VT








• ¦
W
5.0
6.0
6.0
0.58
0.118
5.67
-0.17
-0.12

WE








•
WH









WO
9.0
8.0
7.0
1.00
0.236
8.00
0.64
0.69

WR









WW








•
X
4.0
3.0
4.0
0.58
0.118
3.67
-0.86
:0-81

XA








•' _
xc








V
XD








•
XF









XI
5.0
3.0
6.0
1.53
0.354
4.67
-0.51
-0.46

XJ









XK
4.0
5.0
4.0
0.58
0.118
4.33
-0.63
-0.58

XL
5.0
5.0
5.0
0.00
0.000
5.00
-0.40
-0.35

XM
10.0
10.0
10.0
0.00
0.000
10.00
1.33
1.39

XN








« '
xo









XP








•
III ¦ III
• $
No data submitted
Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
ft = Above control limit
JJ. = Below control limit

-------
15/44
ESD-LV Performance Evaluation: Blind-B, 21-Apr-1998
Strontium-89
Lab Res. 1
Exper. Rng anal	Normalized deviation
Res. 2 Res. 3 Sigma (R + SR) Average (grand-avg) (known) Tag
XQ
XR
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
1.00

SZ
5.00

HK
7.33

AZ
1.00

EL
5.00

GQ
7.67

E
1.00

DT
5.00

CX
7.67

BO
1.67

QM
5.00

A
8.00

WO
2.00

PB
5.33

UP
8.00

BH
3.67

X
5.33

K
8.00

AL
4.00

T
5.33

CA
8.33

N
4.00

SS
5.67

W
8.33

BM
4.33

XK
5.67

AK
8.33

BL
4.33

JY
6.00

AW
9.00

SM
4.33

FE
6.33

NJ
9.00

JS
4.33

EB
6.67

DE
9.67

I
4.33

C
6.67

AF
10.00

XM
4.67

XI
7.00

TD
10.33

QW
4.67

TQ
7.00

Q
11.00

AJ
4.67

LF
7.00

L
11.67

QU
4.67

DD
7.00

D
12.00

BA
4.67

CJ
7.33

VH
30.67
X
CS
4.67

AE
7.33

QZ
33.33
X
VA
5.00

XL
7.33

DO
40.33
76.33
X
X
SI
HP
% responding labs
20-f	
Frequency distribution
10

-T-
+6
—r~
-6
-4
+2
+4
Normalized deviation of the mean from the known value
• s No data submitted TAG SYMBOLS ft = Above control limit
0 = Insufficient data	x = Determined to be an outlier	11 = Below control limit
-------
ESD-LV Performance Evaluation: Blind-B, 21-Apr-1998	16/44
Strontium-89
% responding labs	Frequency distribution
20 	
10-
-2	0	+2	+4
Normalized deviation of the mean from the grand average
-------
ESD-LV Performance Evaluation: Blind-B, 21-Apr-1998
17/44
Strontium-90	Statistical Summary	182 Participants
The known value of this nuclide is 18.0 pCi/1 with an expected precision of 5.0; the control limits
are 9.3 to 26.7; the warning regions are 9.3 to 12.2 and 23.8 to 26.7
112(61.5 %) Failed to respond •
1(0.5 %) Outliers
2(1.1 %) Out of control -
but not an outlier
. 64(35.2 %) Within all limits
3(1.6 %) In warning zone
but within control
Statistic
Respondents
Non-outliers
Mean
17.50
Grand Avg 17.06
Std. Dev.
4.60
2.75
Variance
21.13
7.56
% Coef. of Var.
26.26
16.12
% deviation of mean from known value
-2.75
-5.21
Norm. dev. of mean from known value
-0.11
-0.34
Median
17.33
17.33
% deviation of median from known value
-3.70
-3.70
Norm. dev. of median from known value
-0.15
-0.24
3(4.3 %) More than 3 norm. S.D.
; 55(78.6 %) Within 1 norm. S.D.
of known value


' ' ?i i -
' ' "	iC
:;;
:
r\ ' ¦
	 \
*¦
-- ,
3(4.3 %) Between 2 and 3 norm. S.D.
%	W	JT\S
¦< % .
'¦ «
¦,*'' + - ' ;
I I I	Q(1P.9 %) Between 1 and 2 norm. S.D.
-------
18/44

ESD-LV Performance Evaluation: Blind-B, 21-Apr-1998

Strontium-90







Lab
Res. 1


Exper.
Rng anal

Normalized deviation
Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
A
18.0
19.0
20.0
1.00
0.236
19.00
0.67
0.35
AE
17.0
17.0
16.0
0.58
0.118
16.67
-0.14
-0.46
AF
18.0
17.0
18.0
0.58
0.118
17.67
0.21
-0.12
AH







•
AJ
16.0
16.0
17.0
0.58
0.118
16.33
-0.25
-0.58
AK
17.0
18.0
18.0
0.58
0.118
17.67
0.21
-0.12
AL
16.0
15.0
16.0
0.58
0.118
15.67
-0.48
-0.81
AP







•
AR







. •
AU
17.0
20.0
22.0
2.52
0.591
19.67
0.90
0.58
AW
18.0
18.0
18.0
0.00
0.000
18.00
0.32
0.00
AZ
17.0
17.0
18.0
0.58
0.118
17.33
0.09
-0.23
BA
16.0
16.0
15.0
0.58
0.118
15.67
-0.48
-0.81
BB
15.0
15.0
15.0
0.00
0.000
15.00
-0.71
-1.04
BC
18.0
18.0
18.0
0.00
0.000
18.00
0.32
0.00
BG







•
BH
17.0
18.0
20.0
1.53
0.354
18.33
0.44
0.12
BK








BL
19.0
17.0
19.0
1.15
0.236
18.33
0.44
0.12
BM
17.0
18.0
18.0
0.58
0.118
17.67
0.21
-°12
BN







•
BO
15.0
17.0
16.0
1.00
0.236
16.00
-0.37
-0.69
BS







•
BW







•
C
18.0
17.0
17.0
0.58
0.118
17.33
0.09
-0.23
CA
19.0
17.0
16.0
153
0.354
17.33
0.09
-0.23
CC







• -•
CE
17.0
17.0
17.0
0.00
0.000
17.00
-0.02
-0.35
CJ
21.0
21.0
23.0
1.15
0.236
21.67
1.59
1.27
CO
18.0
14.0
17.0
2.08
0.473
16.33
-0.25
-0.58
CP
18.0
17.0
17.0
0.58
0.118
17.33
0.09
-0.23
CS
24.0
26.0
26.0
1.15
0.236
25.33
2.86
2.54
CX
18.0
14.0
13.0
2.65
0.591
15.00
-0.71
-1.04
D
160
16.0
170
0.58
0.118
16.33
-0.25
-0.58
DB







•
DD
18.0
17.0
17.0
0.58
0.118
17.33
0.09
-0.23
DE
18.0
19.0
19.0
0.58
0.118
18.67
0.56
0.23
DI







•
DO
16.0
16.0
16.0
0.00
0.000
16.00
-0.37
-0.69
DT
19.0
19.0
19.0
0.00
0.000
19.00
0.67
0.35
DZ
23.0
22.0
24.0
1.00
0.236
23.00
2.06
1.73
E
18.0
17.0
18.0
0.58
0.118
17.67
0.21
-0.12
EB
16.0
17.0
18.0
1.00
0.236
17.00
-0.02
-0.35
EL
16.0
16.0
15.0
0.58
0.118
15.67
-0.48
-0.81
EO




-


•
• s No data submitted	TAG SYMBOLS	It = Above control limit
0 = Insufficient data	x = Determined to be an outlier	= Below control limit J
-------
ESD-LV Performance Evaluation: Blind-B, 21-Apr-1998	19/44
Strontium-90
Lab Res. 1 Res. 2
Res. 3
Exper. Rng anal
Sigma (R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
ER




•
EV




•
EX




•
FE
21.0 19.0
20.0
1.00 0.236
20.00
1.02 0.69
EF»




*. •
FJ





FL




•
FN"





GI




*
GQ
20.0 20.0
200
0.00 0.000
20.00
1.02 0.69
GZ





m




•
HK
17.0 17.0
17.0
0.00 0.000
17.00
-0.02 -0.35
HL




•
HP
9.0 10.0
14.0
2.65 0.591
11.00
-2.10 -2.42
I
19.0 19.0
19.0
0.00 0.000
19.00
0.67 0.35
ID





IU




•
J





JE




' •
JG





JM




•
JN




«
JQ




•
JS
16.0 16.0
17.0
0.58 0.118
16.33
-0.25 -0.58
JY
18.0 15.0
17.0
1.53 0.354
16.67
-0.14 -0.46
K
16.0 16.0
16.0
0.00 0.000
16.00
-0.37 -0.69 .
KE




•
KT




m
KX





L
17.0 17.0
17.0
0.00 0.000
1700
-0.02 -0.35
,LE





LF
16.0 16.0
20.0
2.31 0.473
17.33
0.09 -0.23
LL





LR





LT





;M'r;




¦
MF;





MP;




• ^
-------
f,	



	^
20 / 44 ESD-LV Performance Evaluation: Blind-B, 21-Apr-1998
Strontium-90


-v
Lab
Res. 1 Res. 2

Exper. Rng anal
Normalized deviation
Res. 3
Sigma (R + SR) Average
(grand-avg) (known) Tag
NJ
13.0 16.0
15.0
1.53 0.354 14.67
-0.83 -1.15
NK



•
NO



•
0



•
OB



•
OF



•
OM



•
OS



•
OY



•
P



•
PA



•
PB
20.0 20.0
20.0
0.00 0.000 20.00
1.02 0.69
PD




PG



•
PM



•
PW




Q
21.0 20.0
20.0
0.58 0.118 20.33
1.13 0.81
QM
14.0 14.0
12.0
1.15 0.236 13.33
-1.29 -1.62
QP



•
QQ




QT




QU
17.0 18.0
19.0
1.00 0.236 18.00
0.32 0.00
QW
15.0 14.0
16.0
1.00 0.236 15.00
-0.71 -1.04
QX



•
QY



•
QZ
17.0 17.0
17.0
0.00 0.000 17.00
-0.02 -0.35
RB



m
RD




RG



•
RI



•
RK



•
RP



•
RR



^ *
RU



- *
RZ



•
S




SD
20.0 19.0
21.0
1.00 0.236 20.00
1.02 0.69
SF




8G



- .
SI
9.0 8.0
9.0
0.58 0.118 8.67
-2.91 -3.23 U
SL



• -
SM
12.0 17.0
140
2.52 0.591 14.33
-0.95 -1.27
SN



4
SO




SR



•
• =
No data submitted

TAG SYMBOLS
IT = Above control limit
0 =
V	
Insufficient data
x =
Determined to be an outlier
11 = Below control limit
-------
r,	







	^


ESD-LV Performance Evaluation: Blind-B, 21-Apr-1998
21/44
Strontium-90






\
Lab
Res. 1


Exper.
Rng anal

Normalized deviation
Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
SS
18.0
17.0
18.0
0.58
0.118
17.67
0.21
-0.12
SX







•
sz
21.0
19.0
21.0
1.15
0.236
20.33
1.13
0.81
T
17.0
16.0
18.0
1.00
0.236
17.00
-0.02
-0.35
TD
18.0
18.0
200
1.15
0.236
18.67
0.56
0.23
TL








TN







•
TQ
16.0
17.0
18.0
1.00
0.236
17.00
-0.02
-0.35
TS







*
TU







•
TY







•
U








UA







•
UK








UM








UP
46.0
60.0
48.0
2.00
0.473
48.00
10.72
10.39 x
UQ







•
UY







•
VA
9.0
10.0
8.0
1.00
0.236
9.00
-2.79
-3.12 U
VC








VH
24.0
16.0
20.0
4.00
0.945
20.00
1.02
0.69
VI







•
VJ







•
VM







•
VO







•
VT







• 1
W
17.0
19.0
18.0
1.00
0.236
18.00
0.32
0.00
WE








WH








WO
12.0
10.0
10.0
1.15
0.236
10.67
-2.22
-2.54
WR
12.0
12.0
13.0
0.58
0.118
12.33
-1.64
-1.96
WW








X
18.0
17.0
17.0
0.58
0.118
1733
0.09
•°-23
XA








xc







•
XL








XF







•
XI
13.0
20.0
15.0
3.61
0.827
16.00
-0.37
¦0.69
XJ







•
XK
17.0
15.0
16.0
1.00
0.236
16.00
-0.37
¦0.69
XL
16.0
16.0
16.0
0.00
0.000
16.00
-0.37
¦0.69
XM
16.0
16.0
17.0
0.58
0.118
16.33
-0.25
¦0.58
XN







•
xo







. •
XP
-






-- •
• =
No data submitted

TAG SYMBOLS

ft = Above control limit
0 =
^	
Insufficient data
x =
Determined to be an outlier
JJ s Below control limit
-------
(F
22/44
ESD-LV Performance Evaluation: Blind-B, 21-Apr-1998
Strontium-00
Lab Res. 1
Exper. Rng anal	Normalized deviation
Res. 2 Res. 3 Sigma (R + SR) Average (grand-avg) (known) Tag
XQ
XR
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
8.67
u
SI
16.33

CO
18.00

W
9.00

VA
16.33

AJ
18.00

QU
10.67

WO
16.67

JY
18.00

BC
11.00

HP
16.67

AE
18.00

AW
12.33

WR
17.00

TQ
18.33

N
13.33

QM
17.00

T
18.33

BL
14.33

SM
17.00

QZ
18.33

BH
14.67

NJ
17.00

L
18.67

TD
15.00

QW
17.00

HK
18.67

DE
15.00

CX
17.00

EB
19.00

I
15.00

BB
17.00

CE
19.00

DT
15.67

EL
17.33

X
19.00

A
15.67

BA
17.33

LF
19.67

AU
15.67

AL
17.33

DD
20.00

VH
16.00

XL
17.33

CP
20.00

SD
16.00

XK
17.33

CA
20.00

PB
16.00

XI
17.33

C
20.00

GQ
16.00

K
17.33

AZ
20.00

FE
16.00

DO
17.67

ss
20.33

SZ
16.00

BO
17.67

E
20.33

Q
16.33

XM
17.67

BM
21.67

CJ
16.33

JS
17.67

AK
23.00

DZ
16.33

D
17.67

AF
25.33
48.00
X
cs
UP
% responding labs
10-
Frequency distribution
-4	-2	0	+2
Normalized deviation of the mean from the known value
• = No data submitted
0 s Insufficient data
TAG SYMBOLS
x = Determined to be an outlier
ft = Above control limit
U s Below control limit
-------
%
20
10
0
responding labs
Frequency distribution
-r-
-4
JjUL.
L—JL
TT	.....	.
-2	6	+2	+4
Normalized deviation of the mean from the grand average
-6
+6
-------
ESD-LV Performance Evaluation: Blind-B, 21-Apr-1998
24/44
Cobalt-60	Statistical Summary	182 Participants
The known value of this nuclide is 50.0 pCi/1 with an expected precision of 5.0; the control limits
are 41.3 to 58.7; the warning regions are 41.3 to 44.2 and 55.8 to 58.7
71 (39.0 %) Failed to respond
10(5.5 %) Outliers -*
Statistic
, 99(54.4 %) Within all limits
Respondents
--- 2(1.1 %) In warning zone
but within control
Non-outliers
Mean
64.42
Grand Avg 49.65
Std. Dev.
102.54
2.25
Variance
10513.89
5.08
% Coef. of Var.
159.18
4.54
% deviation of mean from known value
28.83
-0.70
Norm. dev. of mean from known value
0.14
-0.16
Median
49.67
49.67
% deviation of median from known value
-0.67
-0.67
Norm. dev. of median from known value
0.00
-0.15
10(9.0 %) More than 3 norm. S.D.
¦ *
2(1.8 %) Between 2 and 3 norm. S.D. •
82(73.9 %) Within 1 norm. S.D.
of known value
17(15.3 %) Between 1 and 2 norm. S.D.
-------
25/44

ESD-LV Performance Evaluation: Blind-B, 21-Apr-1998

•
Cobalt-60








Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation

Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
A
48.0
49.0
50.0
1.00
0.236
49.00
-0.23
-0.35

AE
50.0
49.0
48.0
1.00
0.236
49.00
-0.23
-0.35

AF
50.0
52.0
52.0
1.15
0.236
51.33
0.58
0.46

AH








• *
AJ
46.0
53.0
50.0
3.51
0.827
49.67
0.01
-0.12

AK
51.0
49.0
52.0
1.53
0.354
50.67
0.35
0.23

AL
43.0
42.0
43.0
0.58
0.118
42.67
-2.42
-2.54

AP







A .
• '
AR








• .
AU
48.0
46.0
46.0
1.15
0.236
46.67
-1.03
-1.15

AW
51.0
52.0
50.0
1.00
0.236
51.00
0.47
0.35

AZ
43.0
45.0
50.0
3.61
0.827
46.00
-1.26
-1.39

BA
51.0
45.0
55.0
5.03
1.345
50.33
0.24
0.12

BB
50.0
49.0
51.0
1.00
0.236
50.00
0.12
0.00

BC
50.0
50.0
50:°
0.00
0.000
50.00
0.12
0.00

BG








. •
BH
49.0
50.0
51.0
1.00
0.236
50.00
0.12
0.00

BK
77.0
78.0
78.0
0.68
0.118
77.67
9.71
9.58
X
BL
54.0
51.0
49.0
2.52
0.591
51.33
0.58
0.46

BM
50.0
49.0
49.0
0.58
0.118
49.33
-0.11
-0.23

BN
49.0
54.0
49.0
2.89
0.591
50.67
0.35
0.23

BO
51.0
52.0
50.0
1.00
0.236
51.00
0.47
0.35

BS








•
BW








•
C
52.0
55.0
55.0
1.73
0.354
54.00
1.51
1.39

CA
51.0
51.0
48.0
1.73
0.354
50.00
0.12
0.00

CC








•
CE
52.0
50.0
53.0
1.53
0.354
51.67
0.70
0.58

CJ
54.0
51.0
52.0
1.53
0.354
52.33
0.93
0.81

CO
49.0
52.0
58.0
4.58
1.120
53.00
1.16
1.04

CP
54.0
48.0
53.0
3.21
0.709
51.67
0.70
0.58

CS
52.0
48.0
51.0
2.08
0.473
50.33
0.24
0.12

CX
58.0
58.0
56.0
1.15
0.236
57.33
2.66
2.54

D
50.0
50.0
53.0
1.73
0.354
5100„
0.47
0.35

DB








' •
DD
48.0
47.0
48.0
0.58
0.118
47.67
-0.69
-0.81

DE
53.0
53.0
53.0
0.00
0.000
5300
116
1.04

DI








•
DO
50.0
50.0
51.0
0.58
0.118
50.33
0.24
0.12

DT
520
51.0
53.0
1.00
0.236
52.00
0.81
0.69

DZ









E
51.0
51.0
47.0
2.31
0.473
49.67
0.01
-0.12

EB
51.0
51.0
51.0
0.00
0.000
51.00
0.47
0.35

EL
48.0
48.0
49.0
0.58
0.118
48.33
-0.46
-0.58

EO			;	/' ». ;
• = No data submitted	TAG SYMBOLS	ft = Above control limit
0 s Insufficient data	x = Determined to be an outlier	W = Below control limit
-------
/?	







	^
v

ESD-LV Performance Evaluation: Blind-B, 21-Apr-1998
26/44
Cobalt-60






\
Lab
Res. 1


Exper.
Rng anal

Normalized deviation
Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
ER







•
EV'







•
EX
49.0
48.0
41.0
4.36
0.945
46.00
-1.26
-1.39
FE
45.0
52.0
50.0
3.61
0.827
49.00
-0.23
-0.35
FF







9
FJ







9
FL
46.0
49.0
48.°
.1.53
0.354
47.67
"°-69
*0-81
FN.







•
GI
47.0
50.0
49.0
1.53
0.354
48.67
-0.34
-0.46
GQ
51.0
51.0
51.0
0.00
0.000
5100
0.47
0.35
GZ







•
HI
74.0
73.0
73.0
0.58
0.118
73.33
8.20
8.08 x
HK
49.0
49.0
50.0
0.58
0.118
49.33
-0.11
-0.23
HL
48.0
47.0
49.0
1.00
0.236
48.00
-0.57
-0.69
HP
48.0
49.0
47.0
1.00
0.236
48.00
-0.57
-0.69
I
50.0
49.0
47.0
1.53
0.354
48.67
-0.34
-0.46
m








IU
j
49.0
52.0
48.0
2.08
0.473
49.67
0.01
-0.12
JE
49.0
50.°
51.0
1.00
0.236
50.00
0.12
•
0.00
JG







J
JM
49.0
49.0
49.0
0.00
0.000
49.00
-0.23
-0.35
JN







•
JQ








JS
49.0
50.0
49.0
0.58
0.118
49.33
-0.11
-0.23
JY
51.0
50.0
52.0
1.00
0.236
51.00
0.47
0.35
K
47.0
51.0
46.0
2.65
0.591
48.00
-0.57
-0.69
KE







•
KT







•
KX
48.0
50.0
47.0
1.53
0.354
48.33
-0.46
-0.58
L
47.0
51.0
52.0
2.65
0.591
50.00
0.12
O.OO
LE








LF
51.0
49.0
50.0
100
0.236
50.00
0.12
0.00
LL







" •
LR
47.0
50.0
47.0
1.73
0.354
48.00
-0.57
-0.69
LT







- «-
M :








MF








MP
53.0
50.0
49.0
2.08
0.473
50.67
0.35
0.23
MT








MV
41.0
36i0;
410
a;46
0.709
39.00?
|&09;:
^3.81 x
MY








N
48.0
53.0
51.0
2.52
0.591
50.67
0.35
°-23
NA







•
NH
53.0
48.0
49.0
2.65
0.591
50.00
0.12
0.00
• =
No data submitted

TAG SYMBOLS

IT = Above control limit |
0 =
Insufficient data
x =
Determined to be an outlier
JJ- = Below control limit .
-------
27/44

ESD-LV Performance Evaluation: Blind-B, 21-Apr-1998

	s
Cobalt-60








Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation

Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
NJ
49.0
51.0
49.0
1.15
0.236
49.67
0.01
-0.12

NK







'
•
NO








•
O
50.0
50.0
51.0
0.58
0.118
50.33
0.24
0.12

OB
51.0
51.0
50.0
0.58
0.118
50.67
0.35
0.23

OF








' *
OM
47.0
49.0
45.0
2.00
0.473
47.00
-0.92
-1.04

OS








•
OY








•
P
50.0
51.0
53.0
1.53
0.354
51.33
0.58
0.46

PA







V * .
•
PB
50.0
49.0
50.0
0.58
0.118
49.67
0.01
-0.12

PD
52.0
44.0
48.0
4.00
0.945
48.00
-0.57
-0.69

PG








• .
PM
50.0
53.0
52.0
1.53
0.354
51.67
0.70
0.58

PW
48.0
48.0
48.0
0.00
0.000
48.00
-0.57
-0.69

Q
52.0
56.0
50.0
3.06
0.709
52.67
1.04
0.92

QM
55.0
54.0
58.0
2.08
0.473
55.67
2.08
1.96

QP
47.0
49.0
48.0
1.00
0.236
48.00
-0.57
-0.69

QQ








' # ,
QT
48.0
48.0
48.0
0.00
0.000
48.00
-0.57
-0.69

QU
48.0
47.0
50.0
1.53
0.354
48.33
-0.46
-0.58

QW
44.0
47.0
48.0
2.08
0.473
46.33
-1.15
-1.27

QX
64.0
5s;o
64:0
3.46
0.709
62^00
4.28
4.16
X
QY








•
QZ
50.0
51.0
53.0
1.53
0.354
51.38
0.58
0.46

RB








• -
RD








•
RG









HI








• -
RK
47.0
47.0
47.0
000
0.000
47.00
-0.92
-1.04

BP








• *
RR









RU
772.0
17QM
769 0
1.53
0.354
770.33
249.65
249.53
X, .
RZ








•
S
48.0
50.0
49.0
1.00
0.236
49.00
-0.23
-0.35

SD
50.0
46.0
48.0
2.00
0.473
48.00
-0.57
-0.69

SF-.









SG








f #
SI
52.0
52.0
59.0
4.04
0.827
54.33
1.62
1.50

Sli









SM
47.0
50.0
52.0
2.52
0.591
49.67
0.01
-0.12

SN
48.0
45.0
45.0
1.73
0.354
46.00
-1.26
-1.39

SO








. tt ,
SR
47.0
49.0
46.0
1.53
0.354
47.33
-0.80
-0.92

• = No data submitted	TAG SYMBOLS	1T = Above control limit
0 = Insufficient data	x = Determined to be an outlier	11 = Below control limit J
V	'		'J
-------
ESD-LV Performance Evaluation: Blind-B, 21-Apr-1998
28/44
Cobalt-60
Lab
Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known)
SS
47.0
44.0
45.0
1.53
0.354
45.33
-1.50
-1.62
SX
50.0
49.0
48.0
1.00
0.236
49.00
-0.23
-0.35
sz
48.0
49.0
49.0
0.58
0.118
48.67
-0.34
-0.46
T
50.0
49.0
49.0
0.58
0.118
49.33
-0.11
-0.23
TD
48.0
53.0
54.0
3.21
0.709
51.67
0.70
0.58
TL








-TN








TQ
47.0
45.0
44.0
1.53
0.354
45.33
-1.50
-1.62
TS








TU
30.0
32.0
50.0
11.02
3.596
37.33
-4.27
-4.39
TY








U
49.0
50.0
48.0
1.00
0.236
49.00
-0.23
-0.35
UA








UK
60.0
62.0
57.0
2.52
0.591
59.67
3.47
3.35
UM








UP
510
50.0
52.0
1.00
0.236
51.00
0.47
0.35
UQ








UY
51.0
51.0
52.0
0.58
0.118
51.33
0.58
0.46
VA
47.0
50.0
45.0
2.52
0.591
47.33
-0.80
-0.92
VC
49.0
48.0
48.0
0.58
0.118
48.33
-0.46
-0.58
VH
49.0
47.0
49.0
1.15
0.236
48.33
-0.46
-0.58
VI
49.0
51.0
51.0
1.15
0.236
50.33
0.24
0.12
VJ








VM








VO
95.0
98.0
97.0
1.53
0.354
96.67
16.29
16:17
VT
51.0
51.0
51.0
0.00
0.000
51.00
0.47
0.35
W
49.0
43.0
47.0
3.06
0.709
46.33
-1.15
-1.27
WE








WH








WO
54.0
53.0
53.0
0.58
0.118
53.33
1.28
1.15
WR
45.0
48.0
49.0
2.08
0.473
47.33
-0.80
-0.92
WW
49.0
49.0
48.0
0.58
0.118
48.67
-0.34
-0.46
X
010
Wol
57.0
2^31
0.473
59.67
3.47:
3.35
XA
49.0
50.0
50.0
0.58
0.118
49.67
0.01
-0.12
XC








XD
52.0
52.0
52.0
0.00
0.000
52.00
0.81
0.69
XF
46.0
48.0
50.0
2.00
0.473
48.00
-0.57
-0.69
XI
49.0
48.0
49.0
0.58
0.118
48.67
-0.34
-0.46
XJ








XK
54.0
55.0
52.0
1.53
0.354
53.67
1.39
1.27
XL








XM








XN

















0 s
No data submitted
Insufficient data
TAG SYMBOLS
x = Determined to be an outlier
It = Above control limit
II = Below control limit
-------
29/44
ESD-LV Performance Evaluation: Blind-B,
21-Apr-1998
	^
Cobalt-60






¦<
Lab Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation

Res. 3 Sigma
(R + SR)
Average (grand-avg) (known) Tag
XQ 860;0
860.0
; 860.0 0.00
0.000
860.00 280.71 280.59
X
XR " •'

' . '




»
Average

Data sorted by Laboratory Average

Tag
Lab
Average
Tag
Lab
Average Tag
Lab
37.33
X
TU
48.67

GI
51.00
VT
39.00
X
MV
49.00

U
51.00
UP
42.67

AL
49.00

sx
51.00
JY
45.33

TQ
49.00

s
51.00
GQ
45.33

SS
49.00

JM
51.00
EB
46.00

SN
49.00

FE
51.00
D
46.00

EX
49.00

AE
51.00
BO
46.00

AZ
49.00

A
51.00
AW
46.33

W
49.33

T
51.33
UY
46.33

QW
49.33

JS
51.33
QZ
46.67

AU
49.33

HK
51.33
P
47.00

RK
49.33

BM
51.33
BL
47.00

OM
49.67

XA
51.33
AF
47.33

WR
49.67

SM
51.67
TD
47.33

VA
49.67

PB
51.67
PM
47.33

SR
49.67

NJ
51.67
CP
47.67

FL
49.67

IU
51.67
CE
47.67

DD
49.67

E
52.00
XD
48.00

XF
49.67

AJ
52.00
DT
48.00

SD
50.00

NH
52.33
CJ
48.00

QT
50.00

LF
52.67
Q
48.00

QP
50.00

L
53.00
DE
48.00

PW
50.00

JE
53.00
CO
48.00

PD
50.00

CA
53.33
WO
48.00

LR
50.00

BH
53.67
XK
48.00

K
50.00

BC
54.00
C
48.00

HP
50.00

BB
54.33
SI
48.00

HL
50.33

VI
55.67
QM
48.33

VH
50.33

O
57.33
CX
48.33

VC
50.33

DO
59.67 x
X
48.33

QU
50.33

cs
59.67 x
UK
48.33

KX
50.33

BA
62.00 x
QX
48.33

EL
50.67

OB
73.33 x
HI
48.67

XI
50.67

N
77.67 x
BK
48.67

WW
50.67

MP
96.67 x
VO
48.67

SZ
50.67

BN
770.33 x
RU
48.67

I
50.67

AK
860.00 x
XQ
• = No data submitted

TAG SYMBOLS

It = Above control limit
0 = Insufficient data

x = Determined to be an outlier
Jj = Below control limit
-------
ESD-LV Performance Evaluation: Blind-B, 21-Apr-1998
30/44
Cobalt-60
% responding labs	Frequency distribution	
¦B	y»B^—	J - [ B	! ~
Normalized deviation of the mean from the known value
% responding labs	Frequency distribution
10-

I	i " I M I ™ I —t——-T—Jljlil y ¦ , H i1 i	i *"
-6	-4	-2	0	+2	+4	+6
Normalized deviation of the mean from the grand average
-------
ESD-LV Performance Evaluation: Blind-B, 21-Apr-1998
31/44
Cesium-134	Statistical Summary	182 Participants
The known value of this nuclide is 22.0 pCi/1 with an expected precision of 5.0; the control limits
are 13.3 to 30.7; the warning regions are 13.3 to 16.2 and 27.8 to 30.7
72(39.6 %) Failed to respond
99(54.4 %) Within all limits


— 3(1.6 %) In warning zone
8(4.4 %) Outliers
I I
but within control
Statistic
Respondents
Non-outliers
Mean
25.52
Grand Avg 20.74
Std. Dev.
35.06
2.29
Variance
1229.40
5.26
% Coef. of Var.
137.40
11.06
% deviation of mean from known value
15.99
-5.72
Norm. dev. of mean from known value
0.10
-0.55
Median
20.33
20.33
% deviation of median from known value
-7.58
-7.58
Norm. dev. of median from known value
-0.05
-0.73
8(7.3 %) More than 3 norm. S.D. »,
; 77(70.0 %) Within 1 norm. S.D.
J	of known value

ki
;	~f.\ /'J
r<7:.
3(2.7 %) Between 2 and 3 norm. S.D. •
I
(W	-.li* :f
^	rvVtfV.
"	' . - %	' i" -
: - , ' •, : %	y
I
• ¦?: ' " •
' ' ,	,* -	"v '<. . >• , •«'	i.
*S
-------
32/44	ESD-LV Performance Evaluation: Blind-B, 21-Apr-1998
Cesium-134
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
A
21.0
22.0
22.0
0.58
0.118
21.67
0.32
-0.12

AE
21.0
22.0
21.0
0.58
0.118
21.33
0.20
-0.23

AF
19.0
20.0
19.0
0.58
0.118
19.33
-0.49
-0.92

AH








•
AJ
16.0
19.0
16.0
1.73
0.354
17.00
-1.30
-1.73

AK
20.0
20.0
20.0
0.00
0.000
20.00
-0.26
-0.69

AL
28.0
24.0
31.0
3.51
0.827
27.67
2.40
1.96

AP








•
AR








•
AU
20.0
21.0
20.0
0.58
0.118
20.33
-0.14
-0.58

AW
22.0
22.0
22.0
0.00
0.000
22.00
0.44
0.00

AZ
23.0
25.0
28.0
2.52
0.591
25.33
1.59
1.15

BA
22.0
17.0
21.0
2.65
0.591
20.00
-0.26
-0.69

BB
20.0
22.0
21.0
1.00
0.236
21.00
0.09
-0.35

BC
20.0
20.0
20.0
0.00
0.000
20.00
-0.26
-0.69

BG








•
BH
22.0
22.0
23.0
0.58
0.118
22.33
0.55
0.12

BK
32.0
32.0
32.0
0.00
0.000
32.00
3.90
3.46
X
BL
22.0
20.0
20.0
1.15
0.236
20.67
-0.03
-0.46

BM
21.0
21.0
20.0
0.58
0.118
20.67
-0.03
-0.46

BN
16.0
11.0
9.0
3.61
0.827
12.00
-3.03
-3.46
X
BO
23.0
24.0
24.0
0.58
0.118
23.67
1.01
0.58

BS








•
BW








•
C
25.0
21.0
24.0
2.08
0.473
23.33
0.90
0.46

CA
20.0
20.0
22.0
1.15
0.236
20.67
-0.03
-0.46

CC








•
CE
20.0
21.0
20.0
0.58
0.118
20.33
-0.14
-0.58

CJ
21.0
22.0
20.0
1.00
0.236
21.00
0.09
-0.35

CO
19.0
21.0
22.0
1.53
0.354
20.67
-0.03
-0.46

CP
22.0
21.0
21.0
0.58
0.118
21.33
0.20
-0.23

CS
20.0
19.0
18.0
1.00
0.236
19.00
-0.60
-1.04

CX
33.0
27.0
25.0
4.16
0.945
28.33
2.63
2.19

D
19.0
19.0
20.0
0.58
0118
1933
-0.49
-0.92

DB








•
DD
20.0
19.0
20.0
0.58
0.118
19.67
-0.37
-0.81

DE
24.0
25.0
25.0
0.58
0.118
24.67
1.36
0.92

DI








•
DO
20.0
19.0
20.0
0.58
0.118
19.67
-0.37
-0.81

DT
25.0
21.0
20.0
2.65
0.591
22.00
0.44
0.00

DZ








•
E
20.0
21.0
20.0
0.58
0.118
20.33
-0.14
-0.58

EB
20.0
20.0
20,0
0.00
0.000
20.00
-0.26
-0.69

EL
21.0
22.0
21.0
0.58
0.118
2133
0.20
-0.23

EO





<


•
• =
1 0 s
No data submitted
Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
11 = Above control limit
11 = Below control limit
-v
-------
ESD-LV Performance Evaluation: Blind-B, 21-Apr-1998	33/44
Cesium-134
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
ER







•
EV







•
EX
19.0
17.0
15.0
2.00
0.473
17.00
-1.30
-1.73
FE
24.0
22.0
23.0
1.00
0.236
23.00
0.78
0.35
FF







•
FJ







•
FL
19.0
21.0
20.0
1.00
0.236
20.00
-0.26
-0.69
FN







•
GI
17.0
19.0
18.0
1.00
0.236
18.00
-0.95
-1.39
GQ
23.0
23.0
23.0
0.00
0.000
23.00
0.78
0.35
GZ







*
m
31.0
32.0
31.0
~ 0.58
0.118
31.33
3.67
3.23 x
HK
21.0
20.0
20.0
0.58
0.118
20.33
-0.14
-0.58
HL
21.0
20.0
21.0
0.58
0.118
20.67
-0.03
-0.46
HP
17.0
20.0
19.0
1.53
0.354
18.67
-0.72
-1.15
I
20.0
20.0
19.0
0.58
0.118
19.67
-0.37
-°-81
ID








IU
,r
20.0
23.°
19.0
2.08
0.473
20.67
-0.03
-0.46
JE
20.0
20.0
20.0
0.00
0.000
20.00
-0.26
-0.69
JG







•
JM
20.0
20.0
20.0
0.00
0.000
20.00
-0.26
-0.69
JN








JQ







*
JS
20.0
20.0
21.0
0.58
0.118
20.33
-0.14
-0.58
JY
19.0
19.0
19.0
0.00
0.000
19.00
-0.60
-1.04
K
20.0
20.0
20.0
0.00
0.000
2000
-0.26
-0.69
KE







•
KT







• '
KX
21.0
22.0
22.0
0.58
0.118
21.67
0.32
-0.12
L
19.0
21.0
22.0
1.53
0.354
20.67
-0.03
-0.46
LE







•
LF
20.0
21.0
19.0
1.00
0.236
20.00
-0.26
-0.69
LL







•
LR
19.0
18.0
19.0
0.58
0.118
18.67
-0.72
-1.15
LT







•
M







9> ¦
MF








MP
18.0
21.0
20.0
1.53
0.354
19.67
¦0.37
-0.81
MT








MV
12.0
14.0
12.0
1.16
0.236
12.67
•2.80
-3.23 x
"MY







i • ;
N
22.0
21.0
21.0
0.58
0.118
21.33
0.20
-0.23
NA








NH
19.0
18.0
19.0
0.58
0.118
18.67
-0^72
-1.15
• =
0 B
^	
No data submitted
Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
IT = Above control limit
= Below control limit
-------
r,	








	^
34/44
ESD-LV Performance Evaluation: Blind-B, 21-Apr-1998


r
Cesium-134








Lab
Res. 1


Exper.
Rng anal

Normalized deviation

Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
NJ
21.0
22.0
22.0
0.58
0.118
21.67
0.32
-0.12

NK









NO








•
O
22.0
220
20.0
1.15
0.236
21.33
0.20
-0.23

OB








•
OF








•
OM
19.0
18.0
20.0
1.00
0.236
19.00
-0.60
-1.04

OS








•
OY








•
P
12.0
11.0
10.0
1.00
0.236
11.00
-3.37
-3.81
X
PA








•
PB
25.0
24.0
25.0
0.58
0.118
24.67
1.36
0.92

PD
21.0
20.0
21.0
0.58
0.118
20.67
-0.03
-0.46

PG









PM
22.0
21.0
19.0
1.53
0.354
20.67
-0.03
-0.46

PW
19.0
20.0
20.0
0.58
0.118
19.67
-0.37
-0.81

Q
22.0
17.0
20.0
2.52
0.591
19.67
-0.37
-0.81

QM
16.0
17.0
17.0
0.58
0.118
16.67
-1.41
-1.85

QP
21.0
25.0
21.0
2.31
0.473
22.33
0.55
0.12

QQ







>
•
QT
20.0
19.0
20.0
0.58
0.118
19.67
-0.37
-0.81

QU
27.0
28.0
26.0
1.00
0.236
27.00
2.17
1.73

QW
29.0
27.0
26.0
1.53
0.354
27.33
2.28
1.85

QX
21.0
20.0
25.0
2.65
0.591
22.00
0.44
0.00

QY








•
QZ
20.0
20.0
21.0
0.58
0.118
20.33
-0.14
-0.58

RB









RD








•
RG








¦ •
RI








•
RK
20.0
20.0
20.0
0.00
0.000
20.00
-0.26
-0.69

RP








*
RR








~
RU
335.0
315.0
316.0
11.55
3.596
J21.67
104.24
103.81:
X
RZ








•
S
21.0
20.0
19.0
1.00
0.236
20.00
-0.26
-0.69

SD
22.0
21.0
190
1.53
0.354
20.67
•°03
-0.46

SF.








¦ •
SG








\ V"
•
SI
21.0
18.0
18.0
1.73
0.354
19.00
-0.60
-1.04

SL








•
SM
19.0
21.0
21.0
1.15
0.236
20.33
-0.14
-0.58

SN
20.0
20.0
19.0
0.58
0.118
19.67
-0.37
-0.81

SO








. •
SR
20.0
19.0
20.0
0.58
0.118
19.67
-0.37
-0.81

• =
No data submitted

TAG SYMBOLS

ft s Above control limit

Insufficient data
x =
Determined to be an outlier
•11 = Below control limit
			V
-------
	—	—=^\
ESD-LV Performance Evaluation: Blind-B, 21-Apr-1998	35/44
r
Cesium-134
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
SS
19.0
18.0
19.0
0.58
0.118
18.67
-0.72
-1.15

SX
22.0
20.0
21.0
1.00
0.236
21.00
0.09
-0.35

sz
18.0
20.0
20.0
1.15
0.236
19.33
-0.49
-0.92

T
19.0
20.0
19.0
0.58
0.118
19.33
-0.49
-0.92

TD
20.0
19.0
22.0
1.53
0.354
20.33
-0.14
-0.58

TL








•
TN








•
TQ
19.0
20.0
19.0
0.58
0.118
19.33
-0.49
-0.92

TS








•
TU
13.0
13.0
19.0
3.46
0.709
15.00
-1.99
-2.42

TY








* •
U
23.0
22.0
21.0
1.00
0.236
22.00
0.44
0.00

UA








•
UK
19.0
18.0
17.0
1.00
0.236
18.00
-0.95
-1.39

UM








•
UP
20.0
21.0
19.0
1.00
0.236
20.00
-0.26
-0.69

UQ








m'
UY
21.0
21.0
21.0
0.00
0.000
21.00
0.09
-0^35

VA
20.0
23.0
21.0
1.53
0.354
21.33
0.20
-0.23

VC
19.0
19.0
18.0
0.58
0.118
18.67
-0.72
-1.15

VH
19.0
21.0
20.0
1.00
0.236
20.00
-0.26
-0.69

VI
18.0
21.0
20.0
1.53
0.354
19.67
-0.37
-0.81

VJ








•
VM








9
VO
37.0
40.0
39.0
1.53
0.354
38.67
6.21
. 5.77
X
VT
22.0
20.0
21.0
1.00
0.236
21.00
0.09
-0.35

W
21.0
19.0
21.0
1.15
0.236
20.33
-0.14
-0.58

WE








•
WH








-
WO
21.0
38.0
25.0
8.89
2.921
28.00
2.51
2.08

WR
19.0
21.0
22.0
1.53
0.354
20.67
-0.03
-0.46

WW
20.0
19.0
18.0
1.00
0.236
19.00
-0.60
-1.04

X
28.0
25.0
25.0
1.73
0.354
26.00
1.82
1.39

XA
19.0
19.0
20.0
0.58
0.118
19.33
-0.49
-0.92

XC









XD
21.0
21.0
22.0
0.58
0.118
21.33
0.20
-0.23

XF
19.0
18.0
19.0
0.58
0.118
18.67
-0.72
-1.15

XI
19.0
19.0
19.0
0.00
0.000
19.00
-0.60
-1.04

XJ









XK
21.0
210
21.0
O.OO
0.000
21.00
0.09
-0.35

XL









XM








•
XN








•
XO








•
XP








•
• =
I0-
No data submitted
Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
ft = Above control limit
= Below control limit
-------
36/44
ESD-LV Performance Evaluation: Blind-B, 21-Apr-1998
Cesium-134
Lab Res. 1
Exper. Rng anal	Normalized deviation
Res. 2	Res. 3 Sigma (R + SR) Average (grand-avg) (known) Tag
XQ
XR
232:0
232.0
232.0
0.00
0.000
232.00
73.18
72.75
x
ea
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
11.00
X
P
19.67

DD
21.00

SX
12.00
X
BN
20.00

VH
21.00

CJ
12.67
X
MV
20.00

UP
21.00

BB
15.00

TU
20.00

S
21.33

XD
16.67

QM
20.00

RK
21.33

VA
17.00

EX
20.00

LF
21.33

O
17.00

AJ
20.00

K
21.33

N
18.00

UK
20.00

JM
21.33

EL
18.00

GI
20.00

JE
21.33

CP
18.67

XF
20.00

FL
21.33

AE
18.67

VC
20.00

EB
21.67

NJ
18.67

ss
20.00

BC
21.67

KX
18.67

NH
20.00

BA
21.67

A
18.67

LR
20.00

AK
22.00

U
18.67

HP
20.33

W
22.00

QX
19.00

XI
20.33

TD
22.00

DT
19.00

WW
20.33

SM
22.00

AW
19.00

SI
20.33

QZ
22.33

QP
19.00

OM
20.33

JS
22.33

BH
19.00

JY
20.33

HK
23.00

GQ
19.00

CS
20.33

E
23.00

FE
19.33

XA
20.33

CE
23.33

C
19.33

TQ
20.33

AU
23.67

BO
19.33

T
20.67

WR
24.67

PB
19.33

SZ
20.67

SD
24.67

DE
19.33

D
20.67

PM
25.33

AZ
19.33

AF
20.67

PD
26.00

X
19.67

VI
20.67

L
27.00

QU
19.67

SR
20.67

IU
27.33 .

QW
19.67

SN
20.67

HL
27.67

AL
19.67

QT
20.67

CO
28.00

WO
19.67

Q
20.67

CA
28.33

cx
19.67

PW
20.67

BM
31.33
X
m
19.67

MP
20.67

BL
32.00
X
BK
19.67

I
21.00

XK
38.67
X
vo
19.67

DO
21.00

VT
232.00
X
XQ



21.00

UY
321.67
X
RU
• = No data submitted	TAG SYMBOLS	ft = Above control limit
0 = Ins"fficientdata_	_x_=_Determined to be an outlier	^ = Below control limit
-------
ESD-LV Performance Evaluation: Blind-B, 21-Apr-1998
37/44
Cesium-134
% responding labs	Frequency distribution
20-
10-
0
-6	-4	-2,0	+2	+4	+6
Normalized deviation of the mean from the known value
responding labs	Frequency distribution	
20-
10-
0
¦-¦ . —		,	X
i	i	i - f	T "	.
-6	-4	-2	6	+2	+4	+6
Normalized deviation of the mean from the grand average
-------
ESD-LV Performance Evaluation: Blind-B, 21-Apr-1998
38/44
Cesium-137	Statistical Summary	182 Participants
The known value of this nuclide is 10.0 pCi/1 with an expected precision of 5.0; the control limits
are 1.3 to 18.7; the warning regions are 1.3 to 4.2 and 15.8 to 18.7
72(39.6 %) Failed to respond
; 103(56.6 %) Within all limits
* * * >,1

--- 4(2.2 %) In warning zone
3(1.6 %) Outliers
r
I \
but within control
Statistic
Respondents
Non-outliers
Mean
16.13
Grand Avg 10.82
Std. Dev.
43.11
1.72
Variance
1858.47
2.95
% Coef. of Var.
267.26
15.87
% deviation of mean from known value
61.30
8.16
Norm. dev. of mean from known value
0.14
0.48
Median
10.33
10.33
% deviation of median from known value
3.33
3.33
Norm. dev. of median from known value
0.01
0.19
3(2.7 %) More than 3 norm. S.D.
4(3:6 %) Between 2 and 3 norm. S.D.
. 96(87.3 %) Within 1 norm. S.D.
of known value
* 7(6.4 %) Between 1 and 2 norm. S.D.
-------
r,	








	
39/44
ESD-LV Performance Evaluation: Blind-B, 21-Apr-1998


Cesium-137







\
Lab
Res. 1


Exper.
Rng anal

Normalized deviation

Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
A
10.0
10.0
11.0
0.58
0.118
10.33
-0.17
0.12

AE
9.0
10.0
10.0
0.58
0.118
9.67
-0.40
-0.12

AF
10.0
11.0
9.0
1.00
0.236
10.00
-0.28
0.00

AH








•
AJ
10.0
14.0
8.0
3.06
0.709
10.67
-0.05
0.23

AK
13.0
11.0
11.0
1.15
0.236
11.67
0.29
0.58

AL
12.0
10.0
5.0
3.61
0.827
9.00
-0.63
-0.35

AP








•
AR








•
AU
10.0
10.0
9.0
0.58
0.118
9.67
-0.40
-0.12

AW
12.0
12.0
12.0
0.00
0.000
12.00
0.41
0.69

AZ
9.0
12.0
9.0
1.73
0.354
10.00
-0.28
0.00

BA
12.0
10.0
9.0
1.53
0.354
10.33
-0.17
0.12

BB
10.0
12.0
9.0
1.53
0.354
10.33
-0.17
0.12

BC
11.0
11.0
10.0
0.58
0.118
10.67
-0.05
0.23

BG








•
BH
11.0
9.0
10.0
1.00
0.236
10.00
-0.28
0.00

BK
17.0
16.0
16.0
0.58
0.118
16.33
1.91
2.19

BL
10.0
10.0
10.0
0.00
0.000
10.00
-0.28
0.00

BM
13.0
11.0
12.0
1.00
0.236
12.00
0.41
0.69

BN
11.0
8.0
7.0
2.08
0.473
8.67
-0.74
-0.46

BO
10.0
10.0
10.0
0.00
0.000
10.00
-0.28
0.00

B8








•
BW








•
C
9.0
10.0
10.0
0.58
0.118
9.67
-0.40
-0.12

CA
9.0
8.0
10.0
1.00
0.236
9.00
-0.63
"°-35

CC








•
CE
11.0
11.0
10.0
0.58
0.118
10.67
-0.05
0.23

CJ
12.0
11.0
12.0
0.58
0.118
11.67
0.29
0.58

CO
10.0
12.0
14.0
2.00
0.473
12.00
0.41
0.69

CP
12.0
10.0
10.0
1.15
0.236
10.67
-0.05
0.23

CS
11.0
13.0
14.0
1.53
0.354
12.67
0.64
0.92

CX
14.0
22.0
12.0
5.29
1.345
16.00
1.80
2.08

D
10.0
10.0
11.0
0.58
0.118
10.33
-0.17
0.12

DB








•
DD
10.0
11.0
11.0
0.58
0.118
10.67
-0.05
0.23

DE
10.0
11.0
11.0
0.58
0.118
10.67
:° 05
023

DI








•
DO
9.0
10.0
9.0
0.58
0.118
9.33
-0.51
-0.23

DT
i6.0
110
11.0
2.89
0.591
12.67
0.64
0.92

DZ








•
E
10.0
11.0
10.0
0.58
0.118
10.33
-0.17
0.12

EB
11.0
12.0
12.0
0.58
0.118
11.67
0.29
0.58

EL
9.0
10.0
9.0
0.58
0.118
9.33
-0.51
-0.23

•EO








•
• =
No data submitted

TAG SYMBOLS

ft = Above control limit
[0,
Insufficient data
x =
Determined to be an outlier
li = Below control limit
	'J
-------
ESD-LV Performance Evaluation: Blind-B, 21-Apr-1998	40/44
V.
r
Cesium-137
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
ER







•
EV







•
EX
9.0
11.0
14.0
2.52
0.591
11.33
0.18
0.46
FE
11.0
8.0
11.0
1.73
0.354
10.00
-0.28
0.00
FF







•
FJ







•
FL
12.0
10.0
10.0
1.15
0.236
10.67
-0.05
0.23
FN







•
GI
10.0
10.0
9.0
0.58
0.118
9.67
-0.40
-0.12
GQ
9.0
9.0
9.0
0.00
0.000
9.00
-0.63
-0.35
GZ







•
HI
15.0
15.0
15.U
0.00
0.000
15.00
1.45
1.73
HK
10.0
11.0
11.0
0.58
0.118
10.67
-0.05
0.23
HL
13.0
13.0
13.0
0.00
0.000
13.00
0.76
1.04
HP
10.0
11.0
11.0
0.58
0.118
10.67
-0.05
0.23
I
11.0
11.0
10.0
0.58
0118
10.67
-0.05
0.23
ID







•
IU
j
10.0
7.0
11.0
2.08
0.473
9.33
-0.51
-0.23
w
JE
10.0
10.0
10.0
0.00
0.000
10.00
-0.28
0.00
JG







•
JM
11.0
9.0
11.0
1.15
0.236
10.33
-0.17
0.12
JN








JQ







•
JS
10.0
10.0
10.0
0.00
0.000
10.00
-0.28
0.00
JY
11.0
10.0
10.0
0.58
0.118
10.33
-0.17
0.12
K
10.0
10.0
10.0
0.00
0.000
10.00
-0.28
0.00
KE







•
KT







«
KX
15.0
14.0
12.0
1.53
0.354
13.67
0.99
1.27
L
10.0
9.0
10.0
0.58
0.118
9.67
-0.40
-0.12
LE







•
LF
12.0
11.0
10.0
100
°:236
1100
0.06
0.35
LL







•
LR
11.0
12.0
11.0
0.58
0.118
11.33
0.18
0.46
LT







•
"'M.,







•'
"-MF








MP
9.0
10.0
10.0
0.58
0.118
9.67
-0.40
-0.12
MT







•
MV
9.0
15.0
9.0
3.46
0.709
11.00
0.06
0.35
MY








N
10.0
10.0
10.0
0.00
0.000
10.00
-0.28
0.00
NA







•
NH
10.0
9.0
10.0
0.58
0.118
9.67
-0.40
-0.12
• =
[0-
No data submitted
Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
ft = Above control limit
11 = Below control limit
-------
41 ! 44	ESD-LV Performance Evaluation: Blind-B, 21-Apr-1998
v		
r
Cesium-137
Lab
Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
NJ
11.0
10.0
10.0
0.58
0.118
10.33
-0.17
0.12

NK








•
NO








•
O
9.0
9.0
10.0
0.58
0.118
9.33
-0.51
-0.23

OB
11.0
11.0
110
0.00
0.000
11.00
0.06
0.35

OF








•
OM
13.0
12.0
13.0
0.58
0.118
12.67
0.64
0.92

OS








•
OY








•
P








•
PA








•
PB
9.0
10.0
9.0
0.58
0.118
9.33
-0.51
-0.23

PD
12.0
12.0
12.0
0.00
0.000
12.00
0.41
0.69

PG








•
PM
12.0
13.0
10.0
1.53
0.354
11.67
0.29
0.58

PW
10.0
10.0
11.0
0.58
0.118
10.33
-0.17
0.12

Q
10.0
12.0
12.0
1.15
0.236
11.33
0.18
0.46

QM
9.0
10.0
12.0
1.53
0.354
10.33
-0.17
0.12

QP
12.0
14.0
9.0
2.52
0.591
11.67
0.29
0.58

QQ








•
QT
8.0
9.0
8.0
0.58
0.118
8.33
-0.86
-0.58

QU
11.0
9.0
13.0
2.00
0.473
11.00
0.06
0.35

QW
11.0
12.0
12.0
0.58
0.118
11.67
0.29
0.58

QX
15.0
20.0
15.0
2.89
0.591
16.67
2.03
2.31

QY








•
QZ
10.0
10.0
HO
0.58
0.118
10.33
-0.17
0.12

RB








•
RD








•
RG








•
El








•
RK
10.0
10.0
10.0
0.00
0.000
10.00
-0.28
0.00

RP








•
BR








•
RU
158.0
160.0
169.0
1.00
0.236
159.00
51.33
5162
X
RZ








•
S
11.0
10.0
12.0
1.00
0.236
11.00
0.06
0.35

SD
10.0
9.0
11.0
1.00
0.236
10.00
-°-28
0.00

SF








•
SG








• .
SI
150
13.0
12.0
1.53
0.354
13.33
0.87
1.15

8L








• ¦:
SM
13.0
15.0
11.0
2.00
0.473
13.00
0.76
1.04

SN
10.0
10.0
11.0
0.58
0.118
10.33
-0.17
0.12

SO








*
SR
9.0
11.0
9.0
1.15
0.236
9.67
-0.40
-0.12

• =
0 s
No data submitted
Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
ft = Above control limit
II = Below control limit
-------
ESD-LV Performance Evaluation: Blind-B, 21-Apr-1998	42 / 44
r 	
Cesium-137
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
SS
10.0
10.0
10.0
0.00
0.000
10.00
-0.28
0.00

SX
12.0
12.0
12.0
0.00
0.000
12.00
0.41
0.69

sz
10.0
10.0
10.0
0.00
0.000
10.00
-0.28
0.00

T
9.0
8.0
8.0
0.58
0.118
8.33
-0.86
-0.58

TD
9.0
10.0
6.0
2.08
0.473
8.33
-0.86
-0.58

TL









TN








•
TQ
10.0
8.0
13.0
2.52
0.591
10.33
-0.17
0.1.2

Tfl-








•
TU
5.0
7.0
13.0
4.16
0.945
8.33
-0.86
-0.58

TY








•
U
10.0
11.0
10.0
0.58
0.118
1?-33
-0.17
0.12

UA








•
UK
9.0
10.0
11.0
1.00
0.236
10.00
-0.28
0.00

UM








•
UP
10.0
10.0
10.0
0.00
0.000
10.00
-0.28
0.00

UQ








«
UY
9.0
12.0
11.0
1.53
0.354
10.67
-0.05
0.23

VA
12.0
10.0
10.0
1.15
0.236
10.67
-0.05
0.23

VC
9.0
10.0
10.0
0.58
0.118
9.67
-0.40
-0.12

VH
10.0
10.0
10.0
0.00
0.000
10.00
-0.28
0.00

VI
12.0
10.0
10.0
115
0.236
1.0.67
-0.05
0.23

VJ








•
VM








•
VO
17.0
21.0
19.0
2.00
0.473
19.00
2.83
3.12
X
VT
10.0
10.0
10.0
0.00
0.000
10.00
-0.28
0.00

W
12.0
11.0
11.0
0.58
0.118
11.33
018
0.46

WE








*
WH








•
WO
14.0
21.0
15.0
3.79
0.827
16.67
2.03
2.31

WR
7.0
9.0
11.0
2.00
0.473
9.00
-0.63
-0.35

WW
8.0
14.0
8.0
3.46
0.709
10.00
-0.28
0.00

X
15.0
16.0
14.0
1.00
0.236
15.00
1.45
1.73

XA
10.0
10.0
10.0
0.00
0.000
10.00
-0.28
0.00

XC








•
XD
10.0
11.0
10.0
0.58
0.118
10.33
-0.17
0.12

XF
10.0
9.0
10.0
0.58
0.il8
9.67
-0.40
-0.12

XI
10.0
10.0
10.0
0.00
0.000
10.00
-0.28
0.00

XJ:








•
XK
14.0
14.0
180
2.31
0.473
15.33
1.56
1.85

XL









XM








•









•
XO








•
XP








•
• =
[0-
No data submitted
Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
ft = Above control limit
•11 = Below control limit
-------
43/44
ESD-LV Performance Evaluation: Blind-B, 21-Apr-1998
Cesium-137
Lab Res. 1
Exper. Rng anal	Normalized deviation
Rea 2	Res. 3 Sigma (R + SR) Average (grand-avg) (known) Tag
XQ
XR
439.0
439.0.
439.0
0.00
0.000
439.00 148.33
148.61
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
8.33

TU
10.00

K
11.00

S
8.33

TD
10.00

JS
11.00

Qu
8.33

T
10.00

JE
11.00

OB
8.33

QT
10.00

FE
11.00

MV
8.67

BN
10.00

BO
11.00

LF
9.00

WR
10.00

BL
11.33

W
9.00

GQ
10.00

BH
11.33

Q
9.00

CA
10.00

AZ
11.33

LR
9.00

AL
10.00

AF
11.33

EX
9.33

PB
10.33

XD
11.67

QW
9.33

O
10.33

U
11.67

QP
9.33

IU
10.33

TQ
11.67

PM
9.33

EL
10.33

SN
11.67

EB
9.33

DO
10.33

QZ
11.67

CJ
9.67

XF
10.33

QM
11.67

AK
9.67

VC
10.33

PW
12.00

SX
9.67

SR
10.33

NJ
12.00

PD
9.67

NH
10.33

JY
12.00

CO
9.67

MP
10.33

JM
12.00

BM
9.67

L
10.33

E
12.00

AW
9.67

GI
10.33

D
12.67

OM
9.67

C
10.33

BB
12.67

DT
9.67

AU
10.33

BA
12.67

CS
9.67

AE
10.33

A
13.00

SM
10.00

XI
10.67

VI
13.00

HL
10.00

XA
10.67

VA
13.33

SI
10.00

WW
10.67

UY
13.67

KX
10.00

VT
10.67

I
15.00

X
10.00

VH
10.67

HP
15.00

m
10.00

UP
10.67

HK
15.33

XK
10.00

UK
10.67

FL
16.00

cx
10.00

SZ
10.67

DE
16.33

BK
10.00

SS
10.67

DD
16.67

wo
10.00

SD
10.67

CP
16.67

QX
10.00

RK
10.67

CE
19.00
X
vo
10.00

N
10.67

BC
159.00
X
RU



10.67

AJ
439.00
X
XQ
• = No data submitted
0 - Insufficient data
TAG SYMBOLS
x s Determined to be an outlier
1T = Above control limit
II = Below control limit
-------
ESD-LV Performance Evaluation: Blind-B, 21-Apr-1998
44/44
Cesium-137
% responding labs
Frequency distribution
20-
10-
—r-
-4
aiyi
+2
—r~
-2
+4
+6
Normalized deviation of the mean from the known value
% responding labs	Frequency distribution







¦ 	

I	
		Il
K 	
III
!!!¦¦_ -—h
-6 -4 -2 0 +2 +4 +6
Normalized deviation of the mean from the grand average
-------
United Stales	Office of Research and	EPA/600/R-98/12Q
Environmental Protection	Development	September 1998
Agency	Washington, DC 20460
Gamma in Water
Performance
Evaluation Study
A Statistical Evaluation
of the June 5, 1998 Data
006ECB98-120
-------
Gamma in Water
Performance Evaluation Study
June 5, 1998
Environmental Protection Agency
National Exposure Research Laboratory
Environmental Sciences Division
Las Vegas, Nevada
-------
W0
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
OFFICE OF RESEARCH AND DEVELOPMENT
NATIONAL EXPOSURE RESEARCH LABORATORY
ENVIRONMENTAL SCIENCES DIVISION-LAS VEGAS
P.O. BOX 93478
LAS VEGAS, NEVADA 89193-3478
(702/798-2100)
Dear Participant,
Enclosed are the results of the Environmental Sciences Division (ESD-LV)
Performance Evaluation Study for Gamma In Water; June 5, 1998.
The known value for each analysis was determined by gravimetric methods,
checked by chemical analyses performed by ESD-LV's Radiochemistry Laboratory,
and compared to the participating laboratories' grand average.
The expected precision, determined by the known value, was taken from
'Table 3. Laboratory Precision: One Standard Deviation Values and Control Limits
for Various Analyses", which is based on data accumulated over the years by the
Performance Evaluation Program, and can be found in the Environmental Radioactivity
Performance Evaluation Studies Program and Radioactive Standards Distribution
Program information brochure.
Please take a few minutes to review this report and the analytical data your
laboratory submitted to us. If there are any apparent discrepancies, please notify us
immediately.
We encourage you to make use of the computer-automated data:entry system
that has been in place for some time now. As the number of participants increases,
and it becomes unrealistic for us to receive results by mail or FAX, the computer
system will be our only avenue for accepting data.
If you have any questions or comments, please send a message via the data-entry
system or contact Stephen Pia at 702/798-2102 or Patricia Honsa at 702/798-2141.
Sincerely, /y
Stephen Pia
Team Leader
RADQA Program
Enclosure
-------
NOTICE
This material has been funded wholly by
the U.S. Environmental Protection Agency.
It has been subjected to the Agency's review,
and has been approved for publication as
an EPA document.
-------
-ft
ESD-LV Performance Evaluation: Gamma in Water, 5-Jun-1998	1/37
The following pages consist of separate sections for each of the nuclides in this study with four
parts per section. After the first, each part is separated from the next by a new page or a thick
horizontal bar. The first page of each section is a statistical summary for the nuclide and starts
with a statement of the known value, the control limits, and the warning limits.
The warning limits are placed at two normalized standard deviations above and below the
known value and the control limits are three normalized standard deviations above and below
the known value. If you keep control charts, these values will be useful for anticipating problems
with the accuracy of your analytical methods.
The coin shaped pie chart at the top of the summary page shows the fate of all the samples
sent out in number and percentage terms. The pie chart starts at the top and rotates clockwise.
The first sector represents those participants who submitted analytical results within both the
warning and control limits. The next sector represents those who are in the warning region but
not out of control. The third sector represents those who are out of control, but have passed
the outlier test. The fourth sector represents those who have failed the outlier test. The last
sector represents those participants who have failed to respond properly. This is the case if no
analytical results were returned, or less than three determinations were reported, or if the results
were received too late. The reeding on the edge of the coin is spaced at one percent intervals, and
the sector shading becomes darker as the data reliability decreases. Sectors with zero width are
not shown.
The table in the center shows a number of statistical quantities calculated from the submitted
data based on the mean and median values in relation to the known value, both before and after
outlier removal. The lower pie chart uses the same construction aa the upper chart and shows
the distribution of properly submitted data in terms of deviation from the known value divided
into sectors representing one, two, three, and greater than three normalized standard deviations.
The second part is an alphabetical listing, in lab-code order, of submitted data and several
calculated quantities. An entry that is shaded has been rejected because of one of the reasons
listed above or failure of the outlier test. The fifth and sixth columns are a measure of laboratory
precision. The Range analysis is a normalized value that you may use to keep precision control
charts. The eighth and ninth columns are the differences from the mean of all non-outliers and
from the known value, respectively. If this value is between 2.0 and 3.0, your analytical process
precision is in the warning zone; if it exceeds 3.0 it is out of control. A tag symbol may appear in
the last column. Each page with tags has a symbol definition summary at the bottom. If there is
no tag symbol, the data is within the control limits, but it may be in the warning zone.
The third part is a three-column listing of result average, tag symbol, and lab-code in average
order excluding those labs not responding properly. In this order, all outliers and out-of-control
results appear at the top or bottom of the list.
The last part is two bar chart displays showing frequency distributions of responding
participants. The first chart places the known value at the center and a bar at each 0.2 unit of
expected precision. The aecond chart places the mean of the reported measurements at the center
and a bar at each 0.2 unit of standard deviation. In both cases, a bar includes those results within
0.1 unit up to the maximum of six. Any results more than six units from the center value are
shown cumulatively by a shaded bar one past the sixth unit. If the central tendency of the known
value distribution falls away from the center, an error in accuracy is indicated. If the distribution
ia broad, poor precision is indicated. The mean value distribution is similar but uses the average
and standard deviation of reported results as its basis.
-------
2/37	E8D-LV Performance Evaluation: Gamma in Water, 5-Jun-1998
The Range Analysis(R + SR) is calculated from the range, mean range and standard error of
the range values. The range is the difference between the maximum and minimum results for the
laboratory. The mean range is calculated by multiplying the expected precision by 1.693(for three
results). The standard error of the range is calculated by multiplying the mean range by 2.575(for
three results), subtracting the mean range from this product, and dividing the result by 3. If the
range is greater than the mean range, then the range analysis is calculated by subtracting the
mean range from the range, dividing the result by the standard error of the range and adding 1.
If the mean range is greater than or equal to the range, then the range analysis is calculated by
dividing the range by the mean range.
The normalized deviation of the mean from the grand average is calculated from the deviation
of the mean from the grand average and the standard error of the mean values. The deviation of
the mean from the grand average is calculated by subtracting the grand average from the
average of the laboratory's three results. The standard error of the mean is calculated by
dividing the expected precision by the square root of 3(the number of results). The normalized
deviation of the mean from the grand average is calculated by dividing the deviation of the mean
from the grand average by the standard error of the mean.
The normalized deviation of the mean from the known value is calculated from the deviation of
the mean from the known value and the standard error of the mean values. The deviation of the
mean from the known value is calculated by subtracting the known value from the average of the
laboratory's three results. The standard error of the mean is calculated by dividing the expected
precision by the square root of 3(the number of results). The normalized deviation of the mean
from the known value is calculated by dividing the deviation of the mean from the known value by
the standard error of the mean.
A complete explanation of the statistical calculations involved in the report may be found in
the Environmental Radioactivity Performance Evaluation Studies Program information brochure
[Draft Revision of EPA-600/4-81-004], available from Patricia Honsa, ESD-LV, 702/798-2141.
-------
ESD-LV Performance Evaluation: Gamma in Water, 5-Jun-1998
3/37
Cobalt-60	Statistical Summary	168 Participants
The known value of this nuclide is 12.0 pCi/i with an expected precision of 5.0; the control limits
are 3.3 to 20.7; the warning regions are 3.3 to 6.2 and 17.8 to 20.7
Statistic	Respondents	Non-outliers
Mean
13.31
Grand Avg 12.74
Std. Dev.
5.17
1.81
Variance
26.78
3.28
% Coef. of Var.
38.88
14.21
% deviation of mean from known value
10.91
6.20
Norm. dev. of mean from known value
0.25
0.41
Median
12.50
12.33
% deviation of median from known value
4.17
2.78
Norm. dev. of median from known value
0.10
0.18
-------
r	:—
4/37
ESD-LV Performance Evaluation: Gamma in Water,
5-Jun-1998
	^
Cobalt-60






-
Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
A
12.0
13.0
13.0
0.58
0.118
12.67
-0.03
0.23
AE
12.0
12.0
14.0
1.15
0.236
12.67
-0.03
0.23
AF
11.0
12.0
13.0
1.00
0.236
12.00
-0.26
0.00
AH
13.0
12.0
12.0
0.58
0.118
12.33
-0.14
0.12
AI
11.0
11.0
11.0
0.00
0.000
11.00
-0.60
-0.35
AJ
10.0
12.0
16.0
3.06
0.709
12.67
-0.03
0.23
AK
11.0
11.0
11.0
0.00
0.000
11.00
-0.60
-0.35
AL
18.0
17.0
20.0
1.53
0.354
18.33
1.94
2.19
AP
12.0
12.0
13.0
0.58
0.118
12.33
-0.14
0.12
AU
10.0
13.0
14.0
2.08
0.473
12.33
-0.14
0.12
AW
10.0
11.0
11.0
0.58
0.118
10.67
-0.72
-0.46
AY







»
AZ
13.0
14.0
12.0
1.00
0.236
13.00
0.09
0.35
BA
10.0
10.0
11.0
0.58
0.118
10.33
-0.84
-0.58
BB
12.0
13.0
15.0
1.53
0.354
13.33
0.20
0.46
BC
12.0
12.0
14.0
1.15
0.236
12.67
-0.03
0.23
B G







•
BH
11.0
11.0
13.0
1.15
0.236
11.67
-0.37
-0.12
BK
14.0
14.0
14.0
0.00
0.000
14.00
0.43
0.69
BL
14.0
12.0
12.0
1.15
0.236
12.67
-0.03
0.23
BM
13.0
12.0
13.0
0.58
0.118
12.67
-0.03
0.23
BN
13.0
13.0
12.0
0.58
0.118
12.67
-0.03
0.23
BO
13.0
11.0
13.0
1.15
0.236
12.33
-0.14
0.12
C
13.0
14.0
13.0
0.58
0.118
13.33
0.20
0.46
CA
13.0
14.0
15.0
1.00
0.236
14.00
0.43
0.69
CC







•
CE
12.0
12.0
12.0
0.00
0.000
12.00
-0.26
0.00
CJ
13.0
12.0
14.0
1.00
0.236
13.00
0.09
0.35
CO
15.0
13.0
16.0
1.53
0.354
14.67
0.67
0.92
CP
14.0
14.0
15.0
0.58
0.118
14.33
0.55
0.81
cs
26.0
27.0
29.0
1.53
0.354
27.33
5.05
5.31 x
cx
15.0
17.0
20.0
2.52
0.591
17.33
1.59
1.85
D
12.0
13.0
12.0
0.58
0.118
12.33
-0.14
0.12
DD
11.0
13.0
12.0
1.00
0.236
12.00
-0.26
0.00
DE
14.0
14.0
14.0
0.00
0.000
14.00
0.43
0.69
DH
12.0
12.0
13.0
0.58
0.118
12.33
-0.14
0.12
DO
12.0
12.0
14.0
1.15
0.236
12.67
-0.03
0.23
DR
13.0
13.0
13.0
0.00
0.000
13.00
0.09
0.35
DT
12.0
13.0
14.0
1.00
0.236
13.00
0.09
0.35
E
12.0
12.0
12.0
0.00
0.000
12.00
-0.26
0.00
EA-







•
EB
12.0
11.0
12.0
0.58
0.118
11.67
-0.37
-0.12
EL
11.0
13.0
11.0
1.15
0.236
11.67
-0.37
-0.12
EW
13.0
12.0
13.0
0.58
0.118
12.67
-0.03
0.23
EX
10.0
9.0
7.0
1.53
0.354
8.67
-1.41
-1.15
• =
No data submitted

TAG SYMBOLS

IT = Above control limit

Insufficient data
x =
Determined to be an outlier
II = Below control limit
		-y
-------
' ""		V
ESD-LV Performance Evaluation: Gamma in Water, 5-Jun-1998	5 / 37
Cobalt-60
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
FE
12.0
8.0
9.0
2.08
0.473
9.67
-1.07
-0.81

FJ
13.0
14.0
13.0
0.58
0.118
13.33
0.20
0.46

FL
13.0
13.0
12.0
0.58
0.118
12.67
-0.03
0.23

GI









GL
12.0
12.0
12.0
0.00
0.000
12.00
-0.26
0.00

GQ
13.0
13.0
13.0
0.00
0.000
13.00
0.09
0.35

HE
12.0
13.0
12.0
0.58
0.118
12.33
-0.14
0.12

HI
13.0
14.0
13.0
0.58
0.118
13.33
0.20
0.46

HK
12.0
12.0
13.0
0.58
0.118
12.33
-0.14
0.12

HL
20.0
18.0
22.0
2.00
0.473
20.00
2.51
2.77

HP
13.0
12.0
14.0
1.00
0.236
13.00
0.09
0.35

I
12.0
11.0
11.0
0.58
0.118
11.33
-0.49
-0.23

IU








•
' J.«








•
JE
13.0
12.0
12.0
0.58
0.118
12.33
-0.14
0.12

JG








•
JM
12.0
13.0
12.0
0.58
0.118
12.33
-0.14
0.12

JS
11.0
12.0
12.0
0.58
0.118
11.67
-0.37
-0.12

JY
13.0
12.0
13.0
0.58
0.118
12.67
-0.03
0.23

K
13.0
11.0
13.0
1.15
0.236
12.33
-0.14
0.12

KH
6.0
7.0
7.0
0.58
0.118
6.67
-2.11
-1.85

KL
13.0
12.0
11.0
1.00
0.236
12.00
-0.26
0.00

KX
12.0
12.0
13.0
0.58
0.118
12.33
-0.14
0.12

L
14.0
120
110
1.53
0.354
12.33
-0.14
0.12

LE








•
LF
13.0
13.0
13.0
0.00
0.000
13.00
0.09
0.35

LR
7.0
110
12.0
2.65
0.591
10.00
-0.95
-0.69

M -









MP
11.0
13.0
14.0
1.53
0.354
12.67
-0.03
0.23

MT
12.0
12.0
12.0
0.00
0.000
12.00
-0.26
0.00

MV








•
MX
12.0
12.0
12.0
0.00
0.000
12.00
-O.iJb
U.IHJ

N
13.0
13.0
13.0
0.00
0.000
13.00
0.09
0.35

NH
"i







.. •
NJ
13.0
13.0
13.0
0.00
0.000
13.00
0.09
0.35

NET








•
NO
10.0
14.0
18.0
4.00
0.945
14.00
0.43
0.69

NP
10.0
12.0
12.0
1.15
0.236
11.33
-0.49
-0.23

O
12.0
12.0
12.0
0.00
0.000
12.00
-0.26
0.00

OA
12.0
11.0
12.0
0.58
0.118
11.67
-0.37
-0.12

OB
13.0
12.0
12.0
0.58
0.118
12.33
-0.14
0.12

OM
17.0
19.0
19.0
1.15
0.236
18.33
1.94
2.19

OT
8.0
12.0
11.0
2.08
0.473
10.33
-0.84
-0.58

P
18.0
14.0
17.0
2.08
0.473
16.33
1.24
1.50

:PB$
r







' • '
• =
0 s
No data submitted
Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
11 = Above control limit
•It = Below control limit
-------
a	








	
6/37
ESD-LV Performance Evaluation: Gamma in Water,
5-Jun-1998


f Cobalt-60








Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation

Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
PD
9.0
15.0
11.0
3.06
0.709
n-67
-0.37
-0.12

FE








•
PM
16.0
10.0
13.0
3.00
0.709
13.00
0.09
0.35

PW
13.0
12.0
12.0
0.58
0.118
12.33
-0.14
0.12

PX
12.0
12.0
12.0
0.00
0.000
12.00
-0.26
0.00

Q
16.0
12.0
12.0
2.31
0.473
13.33
0.20
0.46

QM
14.0
15.0
16.0
1.00
0.236
15.00
0.78
1.04

QP
10.0
11.0
12.0
1.00
0.236
11.00
-0.60
-0.35

QT
12.0
12.0
14.0
1.15
0.236
12.67
-0.03
0.23

QU
13.0
12.0
13.0
0.58
0.118
12.67
-0.03
0.23

QW
12.0
12.0
11.0
0.58
0.118
11.67
-0.37
-0.12

QX








•
QZ
12.0
13.0
12.0
0.58
0.118
12.33
-0.14
0.12

R
12.0
13.0
12.0
0.58
0.118
12.33
-0.14
0.12

RK








•
RO
13.0
120
13.0
0.58
0.118
12.67
-0.03
0.23

RR








•
RU
11.0
12.0
12.0
0.58
0.118
11.67
-0.37
-0.12

RX
12.0
11.0
12.0
0.58
0.118
11.67
-0.37
-0.12

RZ
9.0
7.0
9.0
1.15
0.236
8.33
-1.53
-1.27

S
12.0
12.0
11.0
0.58
0.118
11.67
-0.37
-0.12

SD
12.0
120
12.0
0.00
0.000
12.00
-0.26
0.00

SF








•
SI
18.0
12.0
24.0
6.00
1.795
18.00
1.82
2.08

SM
12.0
14.0
16.0
2.00
0.473
14.00
0.43
0.69

SN
12.0
13.0
12.0
0.58
0.118
12.33
-0.14
0.12

SR
14.0
12.0
16.0
2.00
0.473
14.00
0.43
0.69

ss
12.0
11.0
12.0
0.58
0.118
11.67
-0.37
-0.12

sv
13.0
14.0
13.0
0.58
0.118
13.33
0.20
0.46

sx
12.0
13.0
12.0
0.58
0.118
12.33
-0.14
0.12

sz
11.0
12.0
11.0
0.58
0.118
11.33
-0.49
-0.23

T
12.0
11.0
11.0
0.58
0.118
11.33
-0.49
-0.23

TC
15.0
15.0
15.0
0.00
0.000
15.00
0.78
1.04

TD
16.0
16.0
14.0
1.15
0.236
15.33
0.90
1.15

TP








, •
TO
19.0
2&xy;
200,
4,93
1.120
22.33
3.32
3.58
X
TQ
12.0
11.0
12.0
0.58
0.118
11.67
-0.37
-0.12

TR
69 0
6&0>
650
2.31
0.473
67.6?
19.03
19.28
X
TU
12.0
12.0
12.0
0.00
0.000
12.00
-0.26
0.00

U








•
UM








•
UP
12.0
12.0
12.0
0.00
0.000
12.00
-0.26
0.00

UR
13.0
15.0
12.0
1.53
0.354
13.33
0.20
0.46

UV
12.0
14.0
14.0
1.15
0.236
13.33
0.20
0.46

UX
12.0
12.0
12.0
0.00
0.000
12.00
-0.26
0.00

• =
No data submitted

TAG SYMBOLS

ft = Above control limit
l0"
Insufficient data
x =
Determined to be an outlier
s Below control limit
	—	
-------
(?	










	

ESD-LV Performance Evaluation: Gamma in Water, 5-Jun-1998
7/37
Cobalt-60










Lab
Res. 1
Res. 2


Exper.
Rng anal

Normalized deviation

Res. 3
Sigma
(R + SR)
Average (grand-avg)
(known) Tag
UY
13.0
17.0
14.0
2.08
0.473
14.67
0.67
0.92

VA
14.0
12.0
13.0
1.00
0.236
13.00
0.09
0.35

VC
13.0
13.0
14.0
0.58
0.118
13.33
0.20
0.46

VE
15.0
12.0
15.0
1.73
0.354
14.00
0.43
0.69

VH
13.0
12.0
15.0
1.53
0.354
13.33
0.20
0.46

VI
12.0
14.0
15.0
1.53
0.354
13.67
0.32
0.58

VM
15.0
15.0
15.0
0.00
0.000
15.00
0.78
1.04

VO
11.0
10.0
13.0
1.53
0.354
11.33
-0.49
-0.23

vs
16.0
14.0
16.0
1.15
0.236
15.33
0.90
1.15

w
14.0
12.0
13.0
1.00
0.236
13.00
0.09
0.35

WD
10.0
11.0
12.0
1.00
0.236
11.00
-0.60
-0.35

rW.










' • "
WJ
13.0
13.0
11.0
1.15
0.236
12.33
-0.14
0.12

WK
11.0
10.0
12.0
1.00
0.236
11.00
-0.60
-0.35

WO
15.0
13.0
12.0
1.53
0.354
13.33
0.20
0.46

WR
11.0
12.0
15.0
2.08
0.473
12.67
-0.03
0.23

WS
12.0
10.0
13.0
1.53
0.354
11.67
-0.37
-0.12

WV
15.0
15.0
15.0
0.00
0.000
15.00
0.78
1.04

WW
12.0
12.0
11.0
0.58
0.118
11.67
¦0-3.7.
-0.12

WX










¦ •
X
14.0
150
17.0
1.53
0.354
15.33
0.90
1.15

XA










«
XB
12.0
120
12.0
0.00
0.000
12.00
-0.26
0.00

XC










9
XD
15.0
13.0
13.0
1.15
0.236
13.67
0.32
0.58

XF
12.0
11.0
11.0
0.58
0.118
11.33
-0.49
-0.23

XG
13.0
13.0
14.0
0.58
0.118
13.33
0.20
0.46

XI
12.0
12.0
12.0
0.00
0.000
12.00
-0.26
0.00

XK
12.0
10.0
15.0
2.52
0.591
12.33
-0.14
0.12

XO










9
XQ
17.0
15.0
25.0
5.29
1.345
19.00
2.17
2.42

XR










• ,
Y
13.0
13.0
13.0
0.00
0.000
13.00
0.09
0.35




Data sorted by Laboratory Averaj
;e



Average

Tag
Lab
Average
Taj?
Lab
Average
Tag
Lab
6.67


KH

11.00

WD
11.33


I
8.33


HZ

11.00

QP
11.67


WW
8.67


EX

11.00

AK
11.67


WS
9.67


FE

11.00

AI
11.67


TQ
10.00


LR

11.33

XF
11.67


SS
10.33


OT

11.33

VO
11.67


S
10.33


BA

11.33

T
11.67


RX
10.67


AW

11.33

SZ
11.67


RU
11.00


WK

11.33

NP
11.67


QW
• s No data submitted


TAG SYMBOLS

1T s Above control limit
0's Insufficient data

X 5
2 Determined to be an outlier
li = Below control limit
-------
8/37
ESD-LV Performance Evaluation: Gamma in Water, 5-Jun-1998
Cobalt-60
Data sorted by Laboratory Average
Average
Tatf
Lab
Average
Tag
Lab
Average
Tag
Lab
11.67

PD
12.33

DH
13.33

VC
11.67

OA
12.33

D
13.33

uv
11.67

JS
12.33

BO
13.33

UR
11.67

EL
12.33

AU
13.33

sv
11.67

EB
12.33

AP
13.33

Q
11.67

BH
12.33

AH
13.33

m
12.00

XI
12.67

WR
13.33

FJ
12.00

XB
12.67

RO
13.33

c
12.00

UX
12.67

QU
13.33

BB
12.00

UP
12.67

QT
13.67

XD
12.00

TU
12.67

MP
13.67

VI
12.00

SD
12.67

JY
14.00

VE
12.00

PX
12.67

FL
14.00

SR
12.00

O
12.67

EW
14.00

SM
12.00

MX
12.67

DO
14.00

NO
12.00

MT
12.67

BN
14.00

DE
12.00

KL
12.67

BM
14.00

CA
12.00

GL
12.67

BL
14.00

BK
12.00

E
12.67

BC
14.33

CP
12.00

DD
12.67

AJ
14.67

UY
12.00

CE
12.67

AE
14.67

CO
12.00

AF
12.67

A
15.00

WV
12.33

XK
13.00

Y
15.00

VM
12.33

WJ
13.00

W
15.00

TC
12.33

SX
13.00

VA
15.00

QM
12.33

SN
13.00

PM
15.33

X
12.33

R
13.00

NJ
15.33

vs
12.33

QZ
13.00

N
15.33

TD
12.33

PW
13.00

LF
16.33

P
12.33

OB
13.00

HP
17.33

CX
12.33

L
13.00

GQ
18.00

SI
12.33

KX
13.00

DT
18.33

OM
12.33

K
13.00

DR
18.33

AL
12.33

JM
13.00

CJ
19.00

XQ
12.33

JE
13.00

AZ
20.00

HL
12.33

HK
13.33

XG
22.33
X
TO
12.33

HE
13.33

WO
27.33
X
cs



13.33

VH
67.67
X
TR
• = No data submitted
0 = Insufficient data
TAG SYMBOLS
x s Determined to be sin outlier
ft s Above control limit
II = Below control limit
-------
ESD-LV Performance Evaluation: Gamma in Water, 5-Jun-1998
Cobalt-60
% responding labs
Frequency distribution
20-
10--
-i—
•6
~r-
-4
m IB , ¦
~*"1
-	-	i	.	I "I
-2	0	+2	+4
Normalized deviation of the mean from the known value
+&
% responding labs
Frequency distribution
20-
10-
—i—
•6
— ——
I¦	¦
"T
-2	0	+2
Normalized deviation of the mean from the grand average
*T
+6
-------
ESD-LV Performance Evaluation: Gamma in Water, 5-Jun-1998
10/37
Zinc-65	Statistical Summary	168 Participants
The known value of this nuclide is 104.0 pCi/1 with an expected precision of 10.0; the control limits
are 86.7 to 121.3; the warning regions are 86.7 to 92.4 and 115.6 to 121.3
29(17.3 %) Failed to respond
5(3.0 %) Outliers»
8(4.8 %) Out of control '
but not an outlier
Statistic
; 115(68.5 %) Within all limits
Respondents
11 (6.5 %) In warning zone
but within control
Non-outliers
Mean
110.18
Grand Avg 108.45
Std. Dev.
23.50
7.54
Variance
552.23
56.84
% Coef. of Var.
21.33
6.95
% deviation of mean from known value
5.94
4.28
Norm. dev. of mean from known value
0.26
0.59
Median
108.67
108.67
% deviation of median from known value
4.49
4.49
Norm. dev. of median from known value
0.20
0.62
14(10.1 %) More than 3 norm. S.D.
10(7.2 %) Between 2 and 3 norm. S.D. •
;69(49.6 %) Within 1 norm. S.D.
of known value
•46(33.1 %) Between 1 and 2 norm. S.D.
-------
		
[ ^
11/37	ESD-LV Performance Evaluation: Gamma in Water, 5-Jun-1998
Zinc-65
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
A
113.0
116.0
114.0
1.53
0.177
114.33
1.02
1.79
AE
105.0
110.0
106.0
2.65
0.295
107.00
-0.25
0.52
AF
111.0
120.0
113.0
4.73
0.532
114.67
1.08
1.85
AH
108.0
106.0
111.0
2.52
0.295
108.33
-0.02
0.75
AI
101.0
101.0
100.0
0.58
0.059
100.67
-1.35
-0.58
AJ
98.0
93.0
100.0
3.61
0.413
97.00
-1.98
-1.21
AK
94.0
94.0
96.0
1.15
0.118
94.67
-2.39
-1.62
AL
95.0
98.0
93.0
2.52
0.295
95.33
-2.27
-1.50
AP
107.0
110.0
107.0
1.73
0.177
108.00
-0.08
0.69
AU
102.0
102.0
93.0
5.20
0.532
99.00
-1.64
-0.87
AW
100.0
108.0
106.0
4.16
0.473
104.67
-0.65
0.12
AY








AZ
120.0
126.0
116.0
5.03
0.591
120.67
2.12
2.89
BA
113.0
110.0
105.0
4.04
0.473
109.33
0.15
0.92
BB
120.0
114.0
105.0
7.55
0.886
113.00
0.79
1.56
BC
108.0
109.0
107.0
1.00
0.118
108.00
-°08
0.69
BG







•
BH
115.0
116.0
112.0
2.08
0.236
114.33
1.02
1.79
BK
121.0
124.0
123.0
1.53
0.177
122.67
2.46
3.23 ft
BL
111.0
102.0
100.0
5.86
0.650
104.33
-0.71
0.06
BM
111.0
106.0
106.0
2.89
0.295
107.67
-0.14
0.64
BN
114.0
110.0
117.0
3.51
0.413
113.67
0.90
1.67
BO
109.0
110.0
108.0
1.00
0.118
109.00
0.10
0.87
C
109.0
105.0
110.0
2.65
0.295
108.00
-0.08
0.69
CA
86.0
109.0
102.0
11.79
1.683
99.00
-1.64
-0.87
CC







~
CE
113.0
108.0
106.0
3.61
0.413
109.00
0.10
0.87
CJ
109.0
114.0
112.0
2.52
0.295
111.67
0.56
1.33
CO
126.0
120.0
122.0
3.06
0.354
122.67
2.46
3.23 ft
CP
103.0
110.0
104.0
3.79
0.413
105.67
-0.48
0.29
cs
280.0
272.0
276.0
4.04
0.473
275.67
28.96
29.73 x
cx
103.0
101.0
106.0
2.52
0.295
103.33
-0.89
-0.12
D
108.0
110.0
109.0
1.00
0.118
109.00
0.10
0.87
DD
106.0
109.0
102.0
3.51
0.413
105.67
-0.48
0.29
DE
111.0
112.0
112.0
0.58
0.059
111.67
0.56
1.33
DH
96.0
102.0
98.0
3.06
0.354
98.67
-1.69
-0.92
DO
125.0
126.0
120.0
3.21
0.354
123.67
2.64
3.41 ft
DR
112.0
114.0
108.0
3.06
0.354
111.33
0.50
1.27
DT
110.0
104.0
115.0
5.51
0.650
109.67
0.21
0.98
E
ii3.q
1010
114.0
7.23
0.768
109.33
0.15
0.92
EA







•
EB
121.0
116.0
121.0
2.89
0.295
119.33
1.89
2.66
EL
105.0
107.0
100.0
3.61
0.413
104.00
-0.77
0.00
EW
109.0
106.0
105.0
2.08
0.236
106.67
-0.31
0.46
EX
101.0
105.0
109.0
4.00
0.473
105.00
-0.60
0.17
• =
1 0 S
No data submitted
Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
ft = Above control limit
¦11 = Below control limit

-------
ESD-LV Performance Evaluation: Gamma in Water, 5-Jun-1998	12/37

Zinc-65
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known)
Tag
FE
106.0
109.0
116.0
5.13
0.591
110.33
0.33
1.10

FJ
107.0
112.0
111.0
2.65
0.295
110.00
0.27
1.04

FL
110.0
116.0
117.0
3.79
0.413
114.33
1.02
1.7 9

&









GL
115.0
114.0
115.0
0.58
0.059
114.67
1.08
1.85

GQ
95.0
95.0
95.0
0.00
0.000
95.00
-2.33
-1.56

HE
113.0
105.0
111.0
4.16
0.473
109.67
0.21
0.98

m
103.0
109.0
112.0
4.58
0.532
108.00
-0.08
0.69

HK
114.0
111.0
110.0
2.08
0.236
111.67
0.56
1.33

EEL
111.0
110.0
110.0
0.58
0.059
110.33
0.33
1.10

HP
113.0
109.0
117.0
4.00
0.473
113.00
0.79
1.56

I
104.0
101.0
101.0
1.73
0.177
102.00
-1.12
-0.35

IU



















JE
116.0
109.0
115.0
3.79
0.413
113.33
0.85
1.62

JG








•
JM
104.0
106.0
105.0
1.00
0.118
105.00
-0.60
0.17

JS
107.0
107.0
109.0
1.15
0.118
107.67
-0.14
0.64

JY
117.0
121.0
121.0
2.31
0.236
119.67
1.94
2.71

K
103.0
106.0
104.0
1.53
0.177
104.33
-0.71
0.06

KH
560
56.0
767.0
1.00
0.il8
56.00
-9.08
-8 31
X
KL
104.0
100.0
109.0
4.51
0.532
104.33
-0.71
0.06

KX
106.0
105.0
105.0
0.58
0.059
105.33
-0.54
0.23

L
108.0
106.0
99.0
4.73
0.532
104.33
-0.71
006

LE








•
LF
110.0
97.0
110.0
7.51
0.768
105.67
-0.48
0.29

LR
75.0
109.0
110.0
19.92
3.033
98.00
-1.81
-1.04

M








*
MP
112.0
109.0
112.0
1.73
0.177
111.00
0.44
1.21

MT
106.0
106.0
107.0
0.58
0.059
106.33
-0.37
0.40

MV









MX
105.0
106.0
106.0
0.58
0.059
105.67
-0.48
0.29

N
104.0
106.0
108.0
2.00
0.236
106.00
-0.42
0.35

NH








• •
NJ
108.0
109.0
111.0
1.53
0.177
109.33
0.15
0.92

NK








- •
NO
122.0
129.0
144.0
11.24
1.570
131.67
4.02
4.79
tr
NP
107.0
103.0
111.0
4.00
0.473
107.00
-0.25
0.52

O
111.0
110.0
112.0
1.00
0.118
111.00
0.44
1.21

OA
108.0
96.0
105.0
6.24
0.709
103.00
-0.94
¦°17

OB









OM
94.0
103.0
99.0
4.51
0.532
98.67
-1.69
-0.92

OT
105.0
95.0
113.0
9.02
1.120
104.33
-0.71
0.06

P
100.0
109.0
101.0
4.93
0.532
103.33
-0.89
-0.12

PB








A •
• =
i_0_«
No data submitted
Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
It s Above control limit
¦11 s Below control limit
	0
-------
13/37
ESD-LV Performance Evaluation: Gamma in Water,
5-Jun-1998


Zinc-65









Lab

Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation


Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
PD

115.0
108.0
109.0
3.79
0.41.3
110.67
0.38
1.15

PE









•
PM

109.0
110.0
112.0
1.53
0.177
110.33
0.33
1.10

PW

110.0
104.0
109.0
3.21
0.354
107.67
-0.14
0.64

PX

101.0
95.0
104.0
4.58
0.532
100.00
-1.46
-0.69

Q

116.0
110.0
117.0
3.79
0.413
114.33
1.02
1.79

QM

111.0
59.0
87.0
26.03
4.946
85.67
-3.95
-3.18
li
QP

108.0
110.0
99.0
5.86
0.650
105.67
-0.48
0.29

QT

104.0
106.0
111.0
3.61
0.413
107.00
-0.25
0.52

QU

101.0
102.0
102.0
0.58
0.059
101.67
-1.17
-0.40

QW

99.0
101.0
100.0
1.00
0.118
100.00
-1.46
-0.69

QX









• •
QZ

111.0
110.0
113.0
1.53
0.177
111.33
0.50
1.27

R

113.0
109.0
114.0
2.65
0.295
112.00
0.62
1.39

RK









•
RO

109.0
115.0
1120
3.00
0.354
H 2.00
062
1.39

RR









•
RU

109.0
109.0
110.0
0.58
0.059
109.33
0.15
0.92

RX

95.0
101.0
104.0
4.58
0.532
100.00
-1.46
-0.69

RZ

93.0
97.0
98.0
2.65
0.295
96.00
-2.16
-1.39

S

111.0
111.0
109.0
1.15
0.118
110.33
0.33
1.10

SD

106.0
1140
114.0
4.62
0.473
111.33
0.50
1.27

SF









•
SI

102.0
106.0
116.0
7.21
0.827
108.00
-0.08
0.69

SM

122.0
111.0
112.0
6.08
0.650
115.00
1.13
1.91

SN

97.0
92.0
96.0
2.65
0.295
95.00
-2.33
-1.56

SR

110.0
107.0
117.0
5.13
0.591
111.33
0.50
1.27

ss

104.0
107.0
108.0
2.08
0.236
106.33
-0.37
0.40

sv

113.0
114.0
114.0
0.58
0.059
113.67
0.90
1.67

sx

103.0
112.0
118.0
7.55
0.886
111.00
0.44
1.21

sz

102.0
104.0
103.0
1.00
0.118
103.00
-0.94
-0.17

T

103.0
111.0
108.0
4.04
0.473
107.33
-0.19
0.58

TC

112.0
106.0
105.0
3.79
0.413
107.67
-0.14
0.64

TD

114.0
96.0
112.0
9.87
1.120
107.33
-0.19
0.58

TF









•
TO

117.0
121.0
139.0
11.72
1.570
125.67
2.98
3.75
ft
TQ

107.0
106.0
104.0
1.53
0.177
105.67
-0.48
0.29

TR

131.0
131.0
131.0
0.00
0.000
131.00
3.91
4.68
ft
TU
TT"

110.0
1070
109.0
1.53
0.177
108.67
0.04
0.81

U
UM









•
UP

118.0
117.0
119.0
1.00
0.118
118.00
1.65
2.42

UR

121.0
125.0
118.0
3.51
0.413
121.33
2.23
3.00

UV

101.0
100.0
120.0
11.27
1.345
107.00
-0.25
0.52

UX

108.0
114.0
115.0
3.79
0.413
112.33
0.67
1.44

• =
No data submitted

TAG SYMBOLS

ft = Above control limit
0 =
Insufficient data
X s
Determined to be an outlier
Ji = Below control limit
-------
		 ^
ESD-LV Performance Evaluation: Gamma in Water, 5-tJun-1998	14 / 37
Zinc-65
Lab
Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
UY
98.0
122.0
109.0
12.01
1.795
109.67
0.21
0.98

VA
99.0
100.0
97.0
1.53
0.177
98.67
-1.69
-0.92

VC
122.0
118.0
120.0
2.00
0.236
120.00
2.00
2.77

VE
127.0
125.0
120.0
3.61
0.413
124.00
2.69
3.46
tr
VH
105.0
109.0
112.0
3.51
0.413
108.67
0.04
0.81

VI
121.0
125.0
114.0
5.57
0.650
120.00
2.00
2.77

VM
90.0
90.0
90.0
0.00
0.000
90.00
-3.20
-2.42

vo
107.0
105.0
118.0
7.00
0.768
110.00
0.27
1.04

vs
109.0
110.0
111.0
1.00
0.118
110.00
0.27
1.04

w
100.0
106.0
97.0
4.58
0.532
101.00
-1.29
-0.52

WD
106.0
113.0
112.0
3.79
0.413
110.33
0.33
1.10

:;WrC-








•
WJ
118.0
104.0
117.0
7.81
0.827
113.00
0.79
1.56

WK
103.0
107.0
105.0
2.00
0.236
105.00
-0.60
0.17

WO
100.0
89.0
102.0
7.00
0.768
97.00
-1.98
-1.21

WR
100.0
96.0
91.0
4.51
0.532
95.67
-2.21
-1.44

W8
$64.0
27L0
259.0
6.03
0.709
264.67
27 06
27.83
X
wv
121.0
120.0
117.0
2.08
0.236
119.33
1.89
2.66

WW
99.0
101.0
105.0
3.06
0.354
101.67
-1.17
-°-40

wx








•
X
121.0
120.0
110.0
6.08
0.650
117.00
1.48
2.25

XA








•
XB
116.0
116.0
115.0
0.58
0.059
115.67
1.25
2.02

XC








•
XD
105.0
116.0
113.0
5.69
0.650
111.33
0.50
1.27

XF
93.0
106.0
106.0
7.51
0.768
101.67
-1.17
-0.40

XG
109.0
110.0
109.0
0.58
0.059
109.33
0.15
0.92

XI
110.0
110.0
110.0
0.00
0.000
110.00
0.27
1.04

XK
ii.o :
11.0
12,0
0.68
0.059
11.33
-16.82
¦16.05
X
XO






S.' \ .

•
XQ
177.6
187.0
163.0
12.06
1.796
176.67
11.64
12.41
X
XR







•
Y
110.0
106.0
110.0
2.31
0.236
108.67
0.04
. 0.81

Data sorted by Laboratory Average
Average
Tag
Lab
Average Tag
Lab
Average
Tag Lab
11.33
X
XK
96.00
RZ
100.00
RX
56.00
X
KH
97.00
WO
100.00
QW
85.67

QM
97.00
AJ
100.00
PX
90.00

VM
98.00
LR
100.67
AI
94.67

AK
98.67
VA
101.00
W
95.00

SN
98.67
OM
101.67
XF
95.00

GQ
98.67
DH
101.67
WW
95.33

AL
99.00
CA
101.67
QU
95.67

WR
99.00
AU
102.00
I
• s No data submitted

TAG SYMBOLS

IT
= Above control limit
0 = Insufficient data

x s Determined to be an outlier

s Below control limit
—y
-------
15/37	ESD-LV Performance Evaluation: Gamma in Water, 5-Jun-1998
v				
/*"" ' ' " —¦ 		 	
Zinc-65
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
103.00

SZ
108.00

C
111.67

DE
103.00

OA
108.00

BC
111.67

CJ
103.33

P
108.00

AP
112.00

RO
103.33

CX
108.33

AH
112.00

R
104.00

EL
108.67

Y
112.33

UX
104.33

OT
108.67

VH
113.00

WJ
104.33

L
108.67

TU
113.00

HP
104.33

KL
109.00

D
113.00

BB
104.33

K
109.00

CE
113.33

JE
104.33

BL
109.00

BO
113.67

SV
104.67

AW
109.33

XG
113.67

BN
105.00

WK
109.33

RU
114.33

Q
105.00

JM
109.33

NJ
114.33

FL
105.00

EX
109.33

E
114.33

BH
105.33

KX
109.33

BA
114.33

A
105.67

TQ
109.67

UY
114.67

GL
105.67

QP
109.67

HE
114.67

AF
105.67

MX
109.67

DT
115.00

SM
105.67

LF
110.00

XI
115.67

XB
105.67

DD
110.00

VS
117.00

X
105.67

CP
110.00

vo
118.00

UP
106.00

N
110.00

FJ
119.33

WV
106.33

SS
110.33

WD
119.33

EB
106.33

MT
110.33

S
119.67

JY
106.67

EW
110.33

PM
120.00

VI
107.00

UV
110.33

HL
120.00

VC
107.00

QT
110.33

FE
120.67

AZ
107.00

NP
110.67

PD
121.33

UR
107.00

AE
111.00

SX
122.67
ft
CO
107.33

TD
111.00

o
122.67
ft
BK
107.33

T
111.00

MP
123.67
ft
DO
107.67

TC
111.33

XD
124.00
ft
VE
107.67

PW
111.33

SR
125.67
ft
TO
107.67

JS
111.33

SD
131.00
ft
TR
107.67

BM
111.33

QZ
131.67
ft
NO
108.00

SI
111.33

DR
175.67
X
XQ
108.00

HI
111.67

HK
264.67
275.67
X
X
WS
CS
No data submitted
Insufficient data
TAG SYMBOLS
x = Determined to be an outlier
ft = Above control limit
Jj. = Below control limit
-------
fir	^
ESD-LV Performance Evaluation: Gamma in Water, 5-Jun-1998	16 / 37
Zinc-65
% responding labs	Frequency distribution
10-
flkllll


-6	-4	-2	0+2+4	+6
Normalized deviation of the mean from the known value
% responding labs	Frequency distribution
10-
niTli88|llhj
£L,	,	7	¦ ,	T	f	,	,11
-4	-2	0	+2	+4	+6
Normalized deviation of the mean from the grand average
-------
ESD-LV Performance Evaluation: Gamma in Water, 5-Jun-1998
17/37
Cesium-134
Statistical Summary
168 Participants
The known value of this nuclide is 31.0 pCi/1 with an expected precision of 5.0; the control limits
are 22.3 to 39.7; the warning regions are 22.3 to 25.2 and 36.8 to 39.7
29(17.3 %) Failed to respond
, 130(77.4 %) Within all limits
•	\.l X.
•	\ rs.
•	K
•	NJ rv
3(1.8 %) Outliers '
Statistic
i
Respondents
** 6(3.6 %) In warning zone
but within control
Non-outliers
Mean
28.54
Grand Avg 28.42
Std. Dev.
4.31
2.16
Variance
18.55
4.68
% Coef. of Var.
15.09
7.61
% deviation of mean from known value
-7.94
-8.31
Norm. dev. of mean from known value
-0.57
-1.19
Median
28.33
28.33
% deviation of median from known value
-8.60
-8.60
Norm. dev. of median from known value
-0.62
-1.23
3(2.2 %) More than 3 norm. S.D. »
6(4.3 %) Between 2 and 3 norm. S.D.'
,66(47.5 %) Within 1 norm. S.D.
I	of known value
64(46.0 %) Between 1 and 2 norm. S.D.
-------
r(	







	
18/37
ESD-LV Performance Evaluation: Gamma in Water,
5-Jun-1998

Cesium-134







Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
A
31.0
33.0
31.0
1.15
0.236
31.67
1.12
0.23
AE
28.0
29.0
30.0
1.00
0.236
29.00
0.20
-0.69
AF
29.0
27.0
30.0
1.53
0.354
28.67
0.08
-0.81
AH
26.0
25.0
26.0
0.58
0.118
25.67
-0.96
-1.85
AI
26.0
25.0
27.0
1.00
0.236
26.00
-0.84
-1.73
AJ
26.0
27.0
26.0
0.58
0.118
26.33
-0.72
-1.62
AK
25.0
25.0
25.0
0.00
0.000
25.00
-1.19
-2.08
AL
31.0
37.0
32.0
3.21
0.709
33.33
1.70
0.81
AP
30.0
28.0
29.0
1.00
0.236
29.00
0.20
-0.69
AU
27.0
26.0
28.0
1.00
0.236
27.00
-0.49
-1.39
AW
28.0
30.0
29.0
1.00
0.236
29.00
0.20
-0.69
AY







' • '
AZ
33.0
33.0
35.0
1.15
0.236
33.67
1.82
0.92
BA
27.0
28.0
28.0
0.58
0.118
27.67
-0.26
-1.15
BB
29.0
31.0
29.0
1.15
0.236
29.67
0.43
-0.46
BC
29.0
28.0
28.0
0.58
0.118
28.33
-0.03
-0.92
BG
-






• V
BH
31.0
26.0
30.0
2.65
0.591
29.00
0.20
-0.69
BK
32.0
33.0
32.0
0.58
0.118
32.33
1.35
0.46
BL
29.0
30.0
31.0
1.00
0.236
30.00
0.55
-0.35
BM
29.0
30.0
31.0
1.00
0.236
30.00
0.55
-0.35
BN
30.0
29.0
27.0
1.53
0.354
28.67
0.08
-0.81
BO
34.0
31.0
31.0
1.73
0.354
32.00
1.24
0.35
C
31.0
30.0
33.0
1.53
0.354
31.33
1.01
0.12
CA
26.0
28.°
260
115
0.236
26.67
-0.61
-1.50
CC







•
CE
26.0
27.0
29.0
1.53
0.354
27.33
-0.38
-1.27
CJ
33.0
32.0
32.0
0.58
0.118
32.33
1.35
0.46
CO
32.0
26.0
27.0
3.21
0.709
28.33
-0.03
-0.92
CP
30.0
29.0
29.0
0.58
0.118
29.33
0.31
-0.58
cs
69.0
70.0
67.0
1.63
0.354
68.67:
13.94
13.05 x
cx
30.0
26.0
28.0
2.00
0.473
28.00
-0.15
-1.04
D
30.0
30.0
29.0
0.58
0.118
29.67
0.43
-0.46
DD
30.0
28.0
28.0
1.15
0.236
28.67
0.08
-0.81
DE
28.0
28.0
29.0
0.58
0.118
28.33
-0.03
-0.92
DH
28.0
30.0
31.0
1.53
0.354
29.67
0.43
-0.46
DO
28.0
30.0
29.0
1.00
0.236
29.00
0.20
-0.69
DR
27.0
28.0
29.0
1.00
0.236
28.00
-0.15
-1.04
DT
30.0
32.0
30.0
1.15
0.236
30.67
0.78
-0.12
E
29.0
27.0
27.0
1.15
0.236
27.67
-0.26
"115
EA







•
EB
27.0
26.0
27.0
0.58
0.118
26.67
-0.61
-1.50
EL
29.0
28.0
27.0
1.00
0.236
28.00
-0.15
-1.04
EW
27.0
26.0
26.0
0.58
0.118
26.33
-0.72
-1.62
EX
24.0
24.0
25.0
0.58
0.118
24.33
-1.42
-2.31
• =
No data submitted

TAG SYMBOLS

11 = Above control limit
0 =
	
Insufficient data
x =
Determined to be an outlier
JJ. = Below control limit
				
-------
((	

	—






	^
v
ESD-LV Performance Evaluation: Gamma in Water,
5-Juxi-1998
19/37
'
Cesium-134







>
Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation

Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
FE
27.0
29.0
31.0
2.00
0.473
29.00
0.20
-0.69

FJ
29.0
27.0
28.0
1.00
0.236
28.00
-0.15
-1.04

FL
30.0
28.0
28.0
1.15
0.236
28.67
0.08
-0.81

GI








• '
GL
27.0
26.0
26.0
0.58
0.118
26.33
-0.72
-1.62

GQ
31.0
31.0
31.0
0.00
0.000
31.00
0.89
0.00

HE
31.0
32.0
32.0
0.58
0.118
31.67
1.12
0.23

HI
28.0
29.0
29.0
0.58
0.118
28.67
0.08
-0.81

HK
30.0
30.0
29.0
0.58
0.118
29.67
0.43
-0.46

HL
30.0
31.0
30.0
0.58
0.118
30.33
0.66
-0.23

HP
27.0
29.0
28.0
1.00
0.236
28.00
-0.15
-1.04

I
28.0
26.0
27.0
1.00
0.236
27.00
-0.49
-1.39

iu


















• - '
JE
30.0
29.0
28.0
1.00
0.236
29.00
0.20.
-0.69

JG








•
JM
26.0
27.0
27.0
0.58
0.118
26.67
-0.61
-1.50

JS
29.0
28.0
29.0
0.58
0.118
28.67
0.08
-0.81

JY
26.0
27.0
27.0
0.58
0.118
26.67
-0.61
-1.50

K
29.0
27.0
27.0
1.15
0.236
27.67
-0.26
-1.15

KH
14.0
14.0
14.0
0.00
0.000
14.00
-5.00
-5.89
X
KL
29.0
27.0
29.0
1.15
0.236
28.33
-0.03
-0.92

KX
28.0
29.0
28.0
0.58
0.118
28.33
-0.03
-0.92

L
29.0
29.0
27.0
1.15
0.236
28.33
-0.03
-0.92

LE








•
LF
28.0
31.0
28.0
1.73
0.354
29.00
0.20
-0.69

LR
22.0
27.0
26.0
2.65
0.591
25.00
-1.19
-2.08

M








•
MP
30.0
25.0
29.0
2.65
0.591
28.00
-0.15
-1.04

MT
28.0
27.0
28.0
0.58
0.118
27.67
-0.26
-1.15

MV








•
MX
28.0
27.0
27.0
0.58
0.118
27.33
-0.38
-1.27

N
27.0
26.0
28.0
1.00
0.236
27.00
-0.49
-1.39

NH








'
NJ
32.0
30.0
32.0
1.15
0.236
31.33
1.01
0.12

NK









NO
33.0
34.0
35.0
1.00
0.236
34.00
1.93
1.04

NP
27.0
27.0
29.0
1.15
0.236
27.67
-0.26
-1.15

O
29.0
29.0
29.0
0.00
0.000
29.00
0.20
-0.69

OA
28.0
28.0
27.0
0.58
0.118
27.67
-0.26
-1.15

OB








.. •
OM
27.0
26.0
27.0
0.58
0.118
26.67
-0.61
-1.50

OT
29.0
27.0
24.0
2.52
0.591
26.67
-0.61
-1.50




;|i8;d
0.68
0.118 .
18.33
-3.50
-4.39
X









•
• =
No data submitted

TAG SYMBOLS

ft s Above control limit
0 e
V-	
Insufficient data
x =
Determined to be an outlier
= Below control limit
			{/
-------
( =
20/37
ESD-LV Performance Evaluation
: Gamma in Water,
5-Jun-1998

	
Cesium-134








Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation

Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
PD
29.0
29.0
30.0
0.58
0.118
29.33
0.31
-0.58

;PB-









PM
26.0
28.0
23.0
2.52
0.591
25.67
-0.96
-1.85

PW
30.0
29.0
28.0
1.00
0.236
29.00
0.20
-0.69

PX
31.0
31.0
31.0
0.00
0.000
31.00
0.89
0.00

Q
28.0
25.0
27.0
1.53
0.354
26.67
-0.61
-1.50

QM
27.0
25.0
24.0
1.53
0.354
25.33
-1.07
-1.96

QP
31.0
28.0
29.0
1.53
0.354
29.33
0.31
-0.58

QT
27.0
29.0
27.0
1.15
0.236
27.67
-0.26
-1.15

QU
28.0
29.0
27.0
1.00
0.236
28.00
-0.15
-1.04

QW
29.0
27.0
27.0
1.15
0.236
27.67
-0.26
-1.15

QX









QZ
29.0
28.0
29.0
0.58
0.118
28.67
0.08
-0.81

R
29.0
29.0
29.0
0.00
0.000
29.00
0.20
-0.69

RK









RO
28.0
28.0
29.0
0.58
0.118
28.33
-0.03
-0.92

RR







y
•
RU
29.0
30.0
28.0
1.00
0.236
29.00
0.20
-0.69

RX
25.0
24.0
23.0
1.00
0.236
24.00
-1.53
-2.42

RZ
29.0
30.0
32.0
1.53
0.354
30.33
0.66
-0.23

S
27.0
27.0
27.0
0.00
0.000
27.00
-0.49
-1.39

SD
28.0
30.0
28.0
1.15
0.236
28.67
0:08
-0.81

SF








•
SI
27.0
19.0
30.0
5.69
1.570
25.33
-1.07
-1.96

SM
25.0
28.0
27.0
1.53
0.354
26.67
-0.61
-1.50

SN
28.0
25.0
29.0
2.08
0.473
27.33
-0.38
-1.27

SR
29.0
31.0
29.0
1.15
0.236
29.67
0.43
-0.46

ss
28.0
28.0
27.0
0.58
0.118
27.67
-0.26
-1.15

sv
24.0
24.0
26.0
1.15
0.236
24.67
-1.30
-2.19

sx
30.0
29.0
30.0
0.58
0.118
29.67
0.43
-0.46

sz
27.0
27.0
26.0
0.58
0.118
26.67
-0.61
-1.50

T
28.0
27.0
27.0
0.58
0.118
27.33
-0.38
-1.27

TC
28.0
26.0
27.0
1.00
0.236
27.00
-0.49
-1.39

TD
300
26.0
290
208
0.473
28.33
-0.03
-0.92

TF








• '
TO
34.0
31.0
34.0
1.73
0.354
33.00
1.59
0.69

TQ
24.0
27.0
26.0
1.53
0.354
25.67
-0.96
-1.85

TR
29.0
26.0
25.0
2.08
0.473
26.67
-0.61
-1.50

TU
27.0
28.0
280
0.58
0.118
27.67
-0.26
-1.15

U








•
UM








•
UP
28.0
27.0
29.0
1.00
0.236
28.00
-0.15
-1.04

UR
35.0
41.0
32.0
4.58
1.120
36.00
2.62
1.73

UV
27.0
25.0
27.0
1.15
0.236
26.33
-0.72
-1.62

UX
27.0
26.0
29.0
1.53
0.354
27.33
-0.38
-1.27

• =
No data submitted

TAG SYMBOLS

ft s Above control limit
1.0 =
Insufficient data
x =
Determined to be an outlier
li = Below control limit
			i>
-------
I-
ESD-LV Performance Evaluation: Gamma in Water, 5-Jun-1998	21 / 37
Cesium-134
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
UY
34.0
29.0
34.0
2.89
0.591
32.33
1.35
0.46
VA
26.0
27.0
25.0
1.00
0.236
26.00
-0.84
-1.73
VC
31.0
31.0
30.0
0.58
0.118
30.67
0.78
-0.12
VE
31.0
31.0
31.0
0.00
0.000
31.00
0.89
0.00
VH
28.0
24.0
26.0
2.00
0.473
26.00
-0.84
-1.73
VI
25.0
27.0
27.0
1.15
0.236
26.33
-0.72
-1.62
VM
28.0
28.0
28.0
0.00
0.000
28.00
-0.15
-1.04
VO
30.0
29.0
29.0
0.58
0.118
29.33
0.31
-0.58
vs
27.0
30.0
28.0
1.53
0.354
28.33
-0.03
-0.92
w
27.0
30.0
30.0
1.73
0.354
29.00
0.20
-0.69
WD
29.0
28.0
28.0
0.58
0.118
28.33
-0.03
-0.92
>wii;







- •
WJ
27.0
25.0
28.0
1.53
0.354
26.67
-0.61
-1.50
WK
27.0
27.0
26.0
0.58
0.118
26.67
-0.61
-1.50
WO
26.0
27.0
22.0
2.65
0.591
25.00
-1.19
-2.08
WR
27.0
31.0
26.0
2.65
0.591
28.00
-0.15
-1.04
WS
34.0
35.0
35.0
0.58
0.118
34.67
2.16
1.27
WV
28.0
28.0
28.0
0.00
0.000
28.00
-0.15
-1.04
WW
29.0
27.0
27.0
1.15
0.236
27.67
-0.26
-1.15
WX







• •
X
27.0
24.0
28.0
2.08
0.473
26.33
-0.72
-1.62
XA







•
XB
28.0
27.0
29.0
1.00
0.236
28.00
-0.15
-1.04
XC







•
XD
29.0
29.0
28.0
0.58
0.118
28.67
0.08
-0.81
XF
24.0
26.0
26.0
1.15
0.236
25.33
-1.07
-1.96
XG
33.0
33.0
32.0
0.58
0.118
32.67
1.47
0.58
XI
27.0
27.0
27.0
0.00
0.000
27.00
-0.49
-1.39
XK
30.0
28.0
27.0
1.53
0.354
28.33
-0.03
-0.92
XO







• -
XQ
31.0
31.0
34.0
1.73
0.354
32.00
1.24
0.35
XR








Y
29.0
28.0
28.0
0.58
0.118
28.33
-0.03
-0.92
Data sorted by Laboratory Average
Average
Tag
Lab
Average Tag
Lab
Average
Tag Lab
14.00
X
KH
25.33
SI
26.33
VI
18.33
X
P
25.33
QM
26.33
uv
24.00

RX
25.67
TQ
26.33
GL
24.33

EX
25.67
PM
26.33
EW
24.67

sv
25.67
AH
26.33
AJ
25.00

wo
26.00
VH
26.67
WK
25.00

LR
26.00
VA
26.67
WJ
25.00

AK
26.00
AI
26.67
TR
25.33

XF
26.33
X
26.67
sz
• s No data submitted

TAG SYMBOLS

ft
= Above control limit
0 s Insufficient data

x = Determined to be an outlier
4
s Below control limit
-------
22 / 37	E8D-LV Performance Evaluation: Gamma in Water, 5-Jun-1998
Cesium-134
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
26.67

SM
28.00

HP
29.00

AP
26.67

Q
28.00

FJ
29.00

AE
26.67

OT
28.00

EL
29.33

VO
26.67

OM
28.00

DR
29.33

QP
26.67

JY
28.00

CX
29.33

PD
26.67

JM
28.33

Y
29.33

CP
26.67

EB
28.33

XK
29.67

sx
26.67

CA
28.33

WD
29.67

SR
27.00

XI
28.33

vs
29.67

HK
27.00

TC
28.33

TD
29.67

DH
27.00

S
28.33

RO
29.67

D
27.00

N
28.33

L
29.67

BB
27.00

I
28.33

KX
30.00

BM
27.00

AU
28.33

KL
30.00

BL
27.33

ux
28.33

DE
30.33

RZ
27.33

T
28.33

CO
30.33

HL
27.33

SN
28.33

BC
30.67

VC
27.33

MX
28.67

XD
30.67

DT
27.33

CE
28.67

SD
31.00

VE
27.67

WW
28.67

QZ
31.00

PX
27.67

TU
28.67

JS
31.00

GQ
27.67

ss
28.67

m
31.33

NJ
27.67

QW
28.67

FL
31.33

C
27.67

QT
28.67

DD
31.67

HE
27.67

OA
28.67

BN
31.67

A
27.67

NP
28.67

AF
32.00

XQ
27.67

MT
29.00

W
32.00

BO
27.67

K
29.00

RU
32.33

UY
27.67

E
29.00

R
32.33

CJ
27.67

BA
29.00

PW
32.33

BK
28.00

XB
29.00

O
32.67

XG
28.00

WV
29.00

LF
33.00

TO
28.00

WR
29.00

JE
33.33

AL
28.00

VM
29.00

FE
33.67

AZ
28.00

UP
29.00

DO
34.00

NO
28.00

QU
29.00

BH
34.67

WS
28.00

MP
29.00

AW
36.00
68.67
X
UR
CS
• = No data submitted TAG SYMBOLS ft s Above control limit
0 = Insufficient data	x = Determined to be an outlier	!!¦ ~ Below control limit
-------
ESD-LV Performance Evaluation: Gamma in Water, 5-Jun-1998
23/37
Cesium-134
% responding labs
Frequency distribution
10-
-6
% responding labs
-
I	.......
-4	-2	0+2+4
Normalized deviation of the mean from the known value
Frequency distribution
+6
io4
o
I
-6
-2	0	+2	+4
Normalized deviation of the mean from the grand average
+6
J,
-------
ESD-LV Performance Evaluation: Gamma in Water, 5-Jun-1998
24/37
Cesium-137	Statistical Summary	168 Participants
The known value of this nuclide is 35.0 pCi/1 with an expected precision of 5.0; the control limits
are 26.3 to 43.7; the warning regions are 26.3 to 29.2 and 40.8 to 43.7
28(16.7 %) Failed to respond
. 133(79.2 %) Within all limits
*	\K
•	N \
9 \ \
•	\ rs^
•	X
f XJ IS.
6(3.6 %) Outliers
I
Statistic
i ixn^"^
Respondents
*"• 1 (0.6 %) In warning zone
but within control
Non-outliers
Mean
36.48
Grand Avg 36.15
Std. Dev.
5.83
2.06
Variance
34.03
4.25
% Coef. of Var.
15.99
5.70
% deviation of mean from known value
4.22
3.28
Norm. dev. of mean from known value
0.25
0.56
Median
36.00
36.00
% deviation of median from known value
2.86
2.86
Norm. dev. of median from known value
0.17
0.49
6(4.3 %) More than 3 norm. S.D.
1 (0;7 %) Between 2 and 3 norm. S.D
; 107(76.4 %) Within 1 norm. S.D.
of known value
26(18.6 %) Between 1 and 2 norm. S.D.
-------
	
25/37
ESD-LV Performance Evaluation: Gamma in Water,
5-Jun-1998
	
Cesium-137






\
Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
A
36.0
37.0
37.0
0.58
0.118
36.67
0.18
0.58
AE
35.0
35.0
37.0
1.15
0.236
35.67
-0.17
0.23
AF
39.0
35.0
35.0
2.31
0.473
36.33
0.06
0.46
AH
36.0
36.0
39.0
1.73
0.354
37.00
0.30
0.69
AI
34.0
33.0
33.0
0.58
0.118
33.33
-0.97
-0.58
AJ
39.0
39.0
39.0
0.00
0.000
39.00
0.99
1.39
AK
31.0
34.0
34.0
1.73
0.354
33.00
-1.09
-0.69
AL
35.0
31.0
36.0
2.65
0.591
34.00
-0.74
-0.35
AP
36.0
36.0
38.0
1.15
0.236
36.67
0.18
0.58
AU
34.0
37.0
36.0
1.53
0.354
35.67
-0.17
0.23
AW
37.0
35.0
36.0
1.00
0.236
36.00
-0.05
0.35
AY







•
AZ
37.0
39.0
38.0
1.00
0.236
38.00
0.64
1.04
BA
35.0
34.0
31.0
2.08
0.473
33.33
-0.97
-0.58
BB
36.0
37.0
34.0
1.53
0.354
35.67
-0.17
0.23
BC
41.0
40.0
40.0
0.58
0.118
40.33
1.45
1.85
BO







•
BH
38.0
35.0
37.0
1.53
0.354
36.67
0.18
0.58
BK
42.0
41.0
42.0
0.58
0.118
41.67
1.91
2.31
BL
35.0
35.0
34.0
0.58
0.118
34.67
-0.51
-0.12
BM
36.0
35.0
36.0
0.58
0.118
35.67
-0.17
0.23
BN
37.0
35.0
41.0
3.06
0.709
37.67
0.53
0.92
BO
35.0
39.0
32.0
3.51
0.827
35.33
-0.28
0.12
C
35.0
36.0
35.0
0.58
0.118
35.33
-0.28
0.12
CA
30.0
37.0
31.0
3.79
0.827
32.67
-1.21
-0.81
CC







•
CE
38.0
36.0
41.0
2.52
0.591
38.33
0.76
1.15
CJ
36.0
37.0
40.0
2.08
0.473
37.67
0.53
0.92
CO
36.0
36.0
34.0
1.15
0.236
35.33
-0.28
0.12
CP
34.0
35.0
36.0
1.00
0.236
35.00
-0.40
0.00
cs
89.0"
90.6
did
1.00
0.236
90.00
18.66
19.05 x
cx
36.0
36.0
40.0
2.31
0.473
37.33
0.41
0.81
D
35.0
36.0
35.0
0.58
0.118
35.33
-0.28
0.12
DD
37.0
37.0
33.0
2:31
0.473
35.67
-0.17
0.23
DE
34.0
34.0
35.0
0.58
0.118
34.33
-0.63
-0.23
DH
33.0
36.0
36.0
1.73
0.354
35.00
-0.40
0.00
DO
42.0
38.0
40.0
2.00
0.473
40.00
1.33
1.73
DR
38.0
35.0
40.0
2.52
0.591
37.67
0.53
0.92
DT
34.0
37.0
38.0
2.08
0.473
36.33
0.06
0.46
E
37.0
33.0
35.0
2.00
0.473
35.00
-0.40
0.00
EA







•
EB
40.0
40.0
41.0
0.58
0.118
40.33
1.45
1.85
EL
35.0
36.0
34.0
1.00
0.236
35.00
-0.40
0.00
EW
35.0
35.0
35.0
0.00
0.000
35.00
-0.40
0.00
EX
32.0
36.0
32.0
2.31
0.473
33.33
-0.97
-0.58
• =
No data submitted

TAG SYMBOLS

1T = Above control limit
1 0 =
V*	
Insufficient data
x =
Determined to be an outlier
JJ- = Below control limit
•y
-------
((	
E8D-LV Performance Evaluation
: Gamma in Water,
5-Jun-1998
	^
26/37
Cesium-137







>
Lab
Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known)
Tag
FE
-FJ-
28.0
32.0
8N8
^30.0
2.00
70100,
0.473
0.000
30.00
mod"
-2.13
%4i:
-1.73
3:81
X
FL
1&?
37.0
37.0
37.0
0.00
0.000
37.00
0.30
0.69
V
GL
37.0
34.0
35.0
1.53
0.354
35.33
-0.28
0.12

GQ
36.0
36.0
36.0
0.00
0.000
36.00
-0.05
0.35

HE
34.0
36.0
35.0
1.00
0.236
35.00
-0.40
0.00

m
36.0
36.0
36.0
0.00
0.000
36.00
-0.05
0.35

HK
36.0
39.0
37.0
1.53
0.354
37.33
0.41
0.81

HL
42.0
39.0
41.0
1.53
0.354
40.67
1.57
1.96

HP
36.0
34.0
36.0
1.15
0.236
35.33
-0.28
0.12

I
•J-%
37.0
35.0
35.0
l.i5
0.236
35.67
-0.17
0.23
•
•
JE
wm
37.0
36.0
35.0
1.00
0.236
36.00
. -0.05
0.35

JM
35.0
35.0
34.0
0.58
0.118
34.67
-0.51
-0.12

JS
34.0
33.0
35.0
1.00
0.236
34.00
-0.74
-0.35

JY
37.0
38.0
38.0
0.58
0.118
37.67
0.53
0.92

K
35.0
34.0
35.0
0.58
0.118
34.67
-0.51
-0.12

SkhI
10&

m#?
000
0.000
19.00
-5.94
-5.64 ¦ ;
X
KL
34.0
36.0
39.0
2.52
0.591
36.33
0.06
0.46

KX
37.0
40.0
36.0
2.08
0.473
37.67
0.53
0.92

L
35.0
34.0
34.0
0.58
0.118
34.33
-0.63
-0.23

lb








•
LF
33.0
35.0
35.0
1.15
0.236
34.33
-0.63
-0.23

LR
27.0
41.0
34.0
7.00
2.245
34.00
-0.74
-0.35

M • •'








*
MP
39.0
39.0
39.0
0.00
0.000
39.00
0.99
1.39

MT
35.0
35.0
34.0
0.58
0.118
34.67
-0.51
-0.12

MV '








*
MX
34.0
34.0
34.0
0.00
0.000
34.00
-0.74
-0.35

N
34.0
35.0
35.0
0.58
0.118
34.67
-0.51
-0.12

NH








•
NJ
36.0
37.0
39.0
1.53
0.354
37.33
0.41
0-81











NO
36.0
38.0
40.0
2.00
0.473
38.00
0.64
1.04

NP
35.0
34.0
37.0
1.53
0.354
35.33
-0.28
0.12

O
37.0
37.0
37.0
0.00
0.000
37.00
0.30
0.69

OA
36.0
34.0
34.0
1.15
0.236
34.67
-0.51
-0.12

OB
39.0
39.0
37.0
1.15
0.236
38.33
0.76
1.15

OM
39.0
39.0
40.0
0.58
0.118
39.33
1.10
1.50

OT
33.0
32.0
35.0
1.53
0.354
33.33
-0.97
-0.58

pi4

2§X>
24.0
1.00
0.236
24.06
'4*21,
>3.81
1
X
ipB:









• s No data submitted

TAG SYMBOLS

It s Above control limit
I
L0-
Insufficient data
X s
Determined to be an outlier
s Below control limit ),
-------
r,	




	



	^
27/37
v.
ESD.LV Performance Evaluation: Gamma in Water,
5-Jun-1998


Cesium-137








Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation

Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
PD
34.0
38.0
34.0
231
0.473
35.33
-0.28
0.12

FE








•
PM
35.0
36.0
36.0
0.58
0.118
35.67
-0.17
0.23

PW
37.0
36.0
35.0
1.00
0.236
36.00
-0.05
0.35

PX
34.0
34.0
34.0
0.00
0.000
34.00
-0.74
-0.35

Q
34.0
42.0
34.0
4.62
0.945
36.67
0.18
0.58

QM
42.0
41.0
37.0
2.65
0.591
40.00
1.33
1.73

QP
38.0
41.0
35.0
3.00
0.709
38.00
0.64
1.04

QT
38.0
34.0
41.0
3.51
0.827
37.67
0.53
0.92

QU
32.0
33.0
35.0
1.53
0.354
33.33
-0.97
-0.58

QW
32.0
34.0
34.0
1.15
0.236
33.33
-0.97
-0.58

QX








*
QZ
37.0
38.0
37.0
0.58
0.118
37.33
0.41
0.81

R
38.0
38.0
37.0
0.58
0.118
37.67
053
0.92

KK








•
RO
37.0
38.0
37.0
0.58
0.118
37.33
0.41
0.81

RR








•
RU
35.0
35.0
36.0
0.58
0.118
35.33
-0.28
0.12

RX
36.0
36.0
38.0
1.15
0.236
36.67
0.18
0.58

RZ
36.0
33.0
37.0
2.08
0.473
35.33
-0.28
0.12

S
35.0
36.0
38.0
1.53
0.354
36.33
0.06
0.46

SD
40.0
40.0
40.0
0.00
0.000
40.00
1.33
1.73

SF








•
SI
34.0
36.0
48.0
7.57
2.245
39.33
1.10
1.50

SM
34.0
38.0
35.0
2.08
0.473
35.67
-0.17
0.23

SN
38.0
35.0
35.0
1.73
0.354
36.00
-0.05
0.35

SR
33.0
36.0
35.0
1.53
0.354
34.67
-0.51
-0.12

ss
37.0
36.0
36.0
0.58
0.118
36.33
0.06
0.46

sv
34.0
35.0
33.0
1.00
0.236
34.00
-0.74
-0.35

sx
35.0
40.0
38.0
2.52
0.591
37.67
0.53
0.92

sz
37.0
33.0
35.0
2.00
0.473
35.00
-0.40
0.00

T
32.0
33.0
34.0
1.00
0.236
33.00
-1.09
-0.69

TC
33.0
34.0
35.0
1.00
0.236
34.00
-0.74
-0.35

TD
37.0
31.0
39.0
4.16
0.945
35.67
-0;17
0.23

TF








•
TO
38.0
43.0
40.0
2.52
0.591
40.33
1.45
1.85

TQ
34.0
35.0
40.0
3.21
0.709
36.33
0.06
0.46

TR
61.0
58.0
62.0
2.08
0.473
60.33
8.38
8.78
X
TU
36.0
36.0
37.0
0.58
0.118
36.33
0.06
0.46

U








•
UM








•
UP
37.0
36.0
38.0
1.00
0.236
37.00
0.30
0.69

UR
31.0
34.0
30.0
2.08
0.473
31.67
-1.55
-1.15

UV
33.0
33.0
33.0
0.00
0.000
33.00
-1.09
-0.69

UX
36.0
37.0
36.0
0.58
0.118
36.33
0.06
0.46

• =
No data submitted

TAG SYMBOLS

ft = Above control limit
0 S
V-	
Insufficient data
x =
Determined to be an outlier
= Below control limit
-------
ESD-LV Performance Evaluation: Gamma in Water, 5-Jun-1998

28/37
Cesium-137
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
UY
39.0
34.0
44.0
5.00
1.345
39.00
0.99
1.39
VA
31.0
32.0
32.0
0.58
0.118
31.67
-1.55
-1.15
VC
37.0
38.0
38.0
0.58
0.118
37.67
0.53
0.92
VE
43.0
35.0
37.0
4.16
0.945
38.33
0.76
1.15
VH
37.0
35.0
36.0
1.00
0.236
36.00
-0.05
0.35
VI
38.0
35.0
37.0
1.53
0.354
36.67
0.18
0.58
VM
40.0
40.0
40.0
0.00
0.000
40.00
1.33
1.73
VO
37.0
34.0
42.0
4.04
0.945
37.67
0.53
0.92
vs
42.0
39.0
40.0
1.53
0.354
40.33
1.45
1.85
w
37.0
35.0
37.0
1.15
0.236
36.33
0.06
0.46
WD^
35.0
35.0
37.0
1.15
0.236
35.67
-0.17
0.23









WJ
36.0
36.0
33.0
1.73
0.354
35.00
-0.40
0.00
WK
35.0
36.0
35.0
0.58
0.118
35.33
-0.28
0.12
WO
40.0
39.0
35.0
2.65
0.591
38.00
0.64
1.04
WR
37.0
38.0
34.0
2.08
0.473
36.33
0.06
0.46
WS
32.0
33.0
34.0
1.00
0.236
33.00
-1.09
-0.69
WV
38.0
38.0
37.0
0.58
0.118
37.67
0.53
0.92
WW
36.0
36.0
34.0
1.15
0.236
35.33
-0.28
0.12
WX







-- •
X
37.0
38.0
40.0
1.53
0.354
38.33
0.76
1.15









XB
37.0
36.0
36.0
0.58
0.118
36.33
0.06
0.46
,xe:







•
XD
38.0
35.0
39.0
2.08
0.473
37.33
0.41
0.81
XF
35.0
35.0
31.0
2.31
0.473
33.67
-0.86
-0.46
XG
34.0
35.0
34.0
0.58
0.118
34.33
-0.63
-0.23
XI
36.0
36.0
37.0
0.58
0.118
36.33
0.06
0.46
XK
40.0
38.0
36.0
2.00
0.473
38.00
0.64
1.04
XO









23.0
;27I0
ii.o
3.06
0.700
23.67
-4.32
-3.93 x
XR








Y
37.0
36.0
36.0
0.58
0.118
36.33
0.06
0.46
Data sorted by Laboratory Average
Average
Tag
Lab
Average Tag
Lab
Average
Tag Lab
19.00
X
KH
33.00
T
34.00
TC
23.67
X
XQ
33.00
AK
34.00
sv
24.00
X
P
33.33
QW
34.00
PX
30.00

FE
33.33
QU
34.00
MX
31.67

VA
33.33
OT
34.00
LR
31.67

UR
33.33
EX
34.00
JS
32.67

CA
33.33
BA
34.00
AL
33.00

WS
33.33
AI
34.33
XG
33.00

UV
33.67
XF
34.33
LF
• s No data submitted

TAG SYMBOLS

ft
= Above control limit
0 s Insufficient data

x s= Determined to be an outlier

= Below control limit
-------
29/37
E8D-LV Performance Evaluation: Gamma in Water, 5-Jun-1998
Cesium-137
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
34.33

L
35.67

AU
37.67

WV
34.33

DE
35.67

AE
37.67

vo
34.67

SR
36.00

VH
37.67

VC
34.67

OA
36.00

SN
37.67

sx
34.67

N
36.00

PW
37.67

R
34.67

MT
36.00

JE
37.67

QT
34.67

K
36.00

HI
37.67

KX
34.67

JM
36.00

GQ
37.67

JY
34.67

BL
36.00

AW
37.67

DR
35.00

WJ
36.33

Y
37.67

CJ
35.00

SZ
36.33

XI
37.67

BN
35.00

HE
36.33

XB
38.00

XK
35.00

EW
36.33

WR
38.00

WO
35.00

EL
36.33

W
38.00

QP
35.00

E
36.33

UX
38.00

NO
35.00

DH
36.33

TU
38.00

AZ
35.00

CP
36.33

TQ
38.33

X
35.33

WW
36.33

SS
38.33

VE
35.33

WK
36.33

s
38.33

OB
35.33

RZ
36.33

KL
38.33

CE
35.33

RU
36.33

DT
39.00

UY
35.33

PD
36.33

AF
39.00

MP
35.33

NP
36.67

VI
39.00

AJ
35.33

HP
36.67

RX
39.33

SI
35.33

GL
36.67

Q
39.33

OM
35.33

D
36.67

BH
40.00

VM
35.33

CO
36.67

AP
40.00

SD
35.33

C
36.67

A
40.00

QM
35.33

BO
37.00

UP
40.00

DO
35.67

WD
37.00

O
40.33

vs
35.67

TD
37.00

FL'
40.33

TO
35.67

SM
37.00

AH
40.33

EB
35.67

PM
37.33

XD
40.33

BC
35.67

I
37.33

RO
40.67

HL
35.67

DD
37.33

QZ
41.67

BK
35.67

BM
37.33

NJ
46.00
X
FJ
35.67

BB
37.33

HK
60.33
X
TR



37.33

CX
90.00
X
cs
• s No data submitted TAG SYMBOLS ft = Above control limit
0 = Inaufficient data	x = Determined to be an outlier	11 = Below control limit
-------
ESD-LV Performance Evaluation: Gamma in Water, 5-Jun-1998
30/37
Cesium-137
% responding labs
10-
Frequency distribution
% responding labs
-4	-2	0	+2	+4
Normalized deviation of the mean from the known value
Frequency distribution
10-
0J T
-6
j||


-4	-2	0	+2
Normalized deviation of the mean from the grand average
+6

-------
ESD-LV Performance Evaluation: Gamma in Water, 5-Jun-1998
31/37
Barium-133	Statistical Summary	168 Participants
The known value of this nuclide is 40.0 pCi/1 with an expected precision of 5.0; the control limits
are 31.3 to 48.7; the warning regions are 31.3 to 34.2 and 45.8 to 48.7
29(17.3 %) Failed to respond
; 121(72.0 %) Within all limits
6(3.6 %) Outliers ' / NV
%

2(1.2 %) Out of control '

10(6.0 %) In warning zone
but not an outlier
I
I I
but within control
Statistic
Respondents
Non-outliers
Mean
38.52
Grand Avg 38.11
Std. Dev.
6.55
2.84
Variance
42.93
8.07
% Coef. of Var.
17.01
7.45
% deviation of mean from known value
-3.70
-4.73
Norm. dev. of mean from known value
-0.23
-0.67
Median
38.00
38.00
% deviation of median from known value
-5.00
-5.00
Norm. dev. of median from known value
-0.31
-0.70
8(5.8 %) More than 3 norm. S.D.
10(7.2 %) Between 2 and 3 norm. S.D.
,82(59.0 %) Within 1 norm. S.D.
S	of known value
39(28.1 %) Between 1 and 2 norm. S.D.
-------
C(	
32/37
ESD-LV Performance Evaluation: Gamma in Water,
5-Jun-1998
		*^S
Barium-133






-
Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
A
39.0
40.0
38.0
1.00
0.236
39.00
0.31
-0.35
AE
39.0
37.0
38.0
1.00
0.236
38.00
-0.04
-0.69
AF
36.0
37.0
38.0
1.00
0.236
37.00
-0.38
-1.04
AH
32.0
34.0
37.0
2.52
0.591
34.33
-1.31
-1.96
AI
37.0
36.0
35.0
1.00
0.236
36.00
-0.73
-1.39
AJ
28 0
24;0
23.6
2.65
0.591
25.00
-4.64
-5.20 x
AK
32.0
33.0
33.0
0.58
0.118
32.67
-1.88
-2.54
AL
40.0
35.0
39.0
2.65
0.591
38.00
-0.04
-0.69
AP
37.0
37.0
36.0
0.58
0.118
36.67
-0.50
-1.15
AU
38.0
36.0
37.0
1.00
0.236
37.00
-0.38
-1.04
AW
41.0
40.0
39.0
100
0.236
40.00
0.66
0.00
AY







»
AZ
40.0
45.0
42.0
2.52
0.591
42.33
1.46
0.81
BA
35.0
35.0
36.0
0.58
0.118
35.33
-0.96
-1.62
BB
41.0
38.0
36.0
2.52
0.591
38.33
0.08
-0.58
BC
35.0
36.0
35.0
0.58
0.118
35.33
-0.96
-1.62
BO







•
BH
35.0
31.0
30.0
2.65
0.591
32.00
-2.12
-2.77
BK
41.0
41.0
43.0
1.15
0.236
41.67
1.23
0.58
BL
40.0
41.0
41.0
0.58
0.118
40.67
0.89
0.23
BM
40.0
42.0
37.0
2.52
0.591
39.67
0.54
-0.12
BN
40.0
42.0
37.0
2.52
0.591
39.67
0.54
-0.12
BO
40.0
37.0
38.0
1.53
0.354
38.33
0.08
-0.58
C
38.0
37.0
39.0
1.00
0.236
38.00
-0.04
-0.69
CA
35.0
36.0
37.0
1.00
0.236
36.00
-0.73
-1.39
CC







•
CE
40.0
38.0
40.0
1.15
0.236
39.33
0.42
-0.23
CJ
37.0
36.0
32.0
2.65
0.591
35.00
-1.08
-1.73
CO
35.0
50.0
40.0
7.64
2.470
41.67
1.23
0.58
CP
42.0
40.0
41.0
1.00
0.236
41.00
1.00
0.35
CS
90.0
89.0
90.0
0,68
0.118
89.67
17.86
17.21 x
CX
39.0
39.0
42.0
1.73
0.354
40.00
0.66
0.00
D
39.0
39.0
39.0
0.00
0.000
39.00
0.31
-0.35
DD
40.0
39.0
36.0
2.08
0.473
38.33
0.08
-0.58
DE
37.0
38.0
38.0
0.58
0.118
37.67
-0.15
-0.81
DH
33.0
37.0
38.0
2.65
0.591
36.00
-0.73
-1.39
DO
40.0
38.0
39.0
1.00
0.236
39.00
0.31
-0.35
DR
34.0
39.0
37.0
2.52
0.591
36.67
-0.50
-1.15
DT
33.0
40.0
40.0
4.04
0.827
37.67
-0.15
-0.81
E
37.0
37.0
39.0
115
0.236
37.67
-°15
"°\81.
EA







•
EB
38.0
36.0
37.0
1.00
0.236
37.00
-0.38
-1.04
EL
39.0
36.0
39.0
1.73
0.354
38.00
-0.04
-0.69
EW
39.0
39.0
38.0
0.58
0.118
38.67
0.19
-0.46
EX
34.0
33.0
31.0
1.53
0.354
32.67
-1.88
-2.54
• =
No data submitted

TAG SYMBOLS

ft = Above control limit
[0.
Insufficient data
x =
Determined to be an outlier
1! = Below control limit
-------
ESD-LV Performance Evaluation: Gamma in Water, 5-Jun-1998	33/37
Barium-133
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
FE
36.0
38.0
40.0
2.00
0.473
38.00
-0.04
-0.69
FJ
41.0
39.0
36.0
2.52
0.591
38.67
0.19
-0.46
FL
40.0
40.0
41.0
0.58
0.118
40.33
0.77
012
GI







•
GL
36.0
36.0
36.0
0.00
0.000
36.00
-0.73
-1.39
GQ
40.0
40.0
40.0
0.00
0.000
40.00
0.66
0.00
ffR
43.0
39.0
41.0
2.00
0.473
41.00
1.00
0.35
HI
38.0
38.0
38.0
0.00
0.000
38.00
-0.04
-0.69
HK
37.0
38.0
37.0
0.58
0.118
37.33
-0.27
-0.92
HL
39.0
41.0
41.0
1.15
0.236
40.33
0.77
0.12
HP
41.0
37.0
43.0
3.06
0.709
40.33
0.77
0.12
I
37.0
36.0
35.0
1.00
0.236
36.00
-0.73
-1.39
IU







" •
J







•
(IE
38.0
39.0
38.0
0.58
0.118
38.33
0.08.
-0.58
JG







«
JM
37.0
34.0
34.0
1.73
0.354
35.00
-1.08
-1.73
JS
34.0
34.0
36.0
1.15
0.236
34.67
-1.19
-1.85
JY
41.0
40.0
41.0
0.58
0.118
40.67
0.89
0.23
K
40.0
38.0
39.0
1.00
0.236
39.00
0.31
-0.35
KH
17.0
17.0
17;0
0.00
o;ooo
17.00
-7.31
-7;97 X
KL
38.0
36.0
40.0
2.00
0.473
38.00
-0.04
-0.69
KX
37.0
39.0
39.0
1.15
0.236
38.33
0.08
-0.58
L
41.0
39.0
37.0
2.00
0.473
39.00
0.31
-0.35
LE







•
LF
38.0
40.0
42.0
2.00
0.473
40.00
0.66
0.00
LE
27.0
32.0
25$:
3.61
0.827
28.00
-3.50
-4A6 x
M







*
MP
36.0
37.0
37.0
0.58
0.118
36.67
-0.50
-1.15
MT
41.0
41.0
39.0
115
0.236
40.33
0.77
012
MV







«
MX
37.0
36.0
36.0
0.58
0.118
36.33
-0.61
-1.27
N
37.0
41.0
38.0
2.08
0.473
38.67
0.19
-0.46
NH-;'







•'
NJ
38.0
40.0
39.0
1.00
0.236
39.00
0.31
-0.35
NKi;':







«
NO
37.0
41.0
43.0
3.06
0.709
40.33
0.77
0.12
NP
36.0
36.0
40.0
2.31
0.473
37.33
-0.27
-0.92
O
38.0
38.0
38.0
0.00
0.000
38.00
-0.04
-0.69
OA
39.0
38.0
35.0
2.08
0.473
37.33
-0.27
-0.92
OB







•
OM
38.0
39.0
39.0
0.58
0.118
38.67
0.19
-0.46
OT
34.0
34.0
37.0
1.73
0.354
35.00
-1.08
-1.73
P
38.0
35.0
40.0
2.52
0.591
37.67
-0.15
-0.81
•PB-r







•
• s . No data submitted TAG SYMBOLS ft = Above control limit
^_0_g_lnsufficient data	x s Determined to be an outlier	II = Below control limit _
-------
34 / 37	ESD-LV Performance Evaluation: Gamma in Water, 5-Jun-1998
Barium-133
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
PD
50.0
38.0
41.0
6.24
1.795
43.00
1.69
1.04
PE







.9
PM
37.0
38.0
41.0
2.08
0.473
38.67
0.19
-0.46
PW
38.0
36.0
36.0
1.15
0.236
36.67
-0.50
-1.15
PX
40.0
38.0
41.0
1.53
0.354
39.67
0.54
-0.12
Q
37.0
40.0
38.0
1.53
0.354
38.33
0.08
-0.58
QM
48.0
49.0
46.0
1.53
0.354
47.67
3.31
2.66
QP
34.0
31.0
41.0
5.13
1.345
35.33
-0.96
-1.62
QT
33.0
32.0
34.0
1.00
0.236
33.00
-1.77
-2.42
QU
40.0
41.0
43.0
1.53
0.354
41.33
1.12
0.46
QW
43.0
42.0
42.0
0.58
0.118
42.33
1.46
0.81
QX







•
QZ
39.0
38.0
39.0
0.58
0.118
38.67
0.19
-0.46
R
38.0
35.0
38.0
1.73
0.354
37.00
-0.38
-1.04
RK







•
RO
36.0
40.0
38.0
2.00
0.473
38.00
-0.04
-0.69
RR







•
RU
36.0
38.0
38.0
1.15
0.236
37.33
-0.27
-0.92
RX
44.0
42.0
43.0
1.00
0.236
43.00
1.69
1.04
RZ
34.0
35.0
34.0
0.58
0.118
34.33
-1.31
-1.96
S
43.0
43.0
41.0
1.15
0.236
42.33
1.46
0.81
SD
34.0
38.0
38.0
2.31
0.473
36.67
-0.50
-1.15
SF







•
SI
36.0
29.0
25.0
5.57
1.570
30.00
-2.81
-3.46 U
SM
38.0
43.0
40.0
2.52
0.591
40.33
0.77
0.12
SN
37.0
36.0
35.0
1.00
0.236
36.00
-0.73
-1.39
SR
41.0
36.0
38.0
2.52
0.591
38.33
0.08
-0.58
ss
40.0
40.0
37.0
1.73
0.354
39.00
0.31
-0.35
sv
41.0
42.0
40.0
1.00
0.236
41.00
1.00
0.35
sx
44.0
39.0
41.0
2.52
0.591
41.33
1.12
0.46
sz
37.0
37.0
37.0
0.00
0.000
37.00
-0.38
-1.04
T
40.0
38.0
36.0
2.00
0.473
38.00
-0.04
-0.69
TC
33.0
34.0
33.0
0.58
0.118
33.33
-1.65
-2.31
TD
35.0
30.0
36.0
3.21
0.709
33.67
-1.54
-2.19
TP







•
TO
57.0
m>o
62.0
6.00
1.345
52.00
4.81
4.16 x
TQ
34.0
41.0
36.0
3.61
0.827
37.00
-0.38
-1.04
TR
7ao
740
730
1.53
0.354
74.33
12.55
11.89 x
TU
36.0
35.0
36.0
0.58
0.118
35.67
-0.85
-1.50
U







•
UM







•
UP
39.0
38.0
40.0
1.00
0.236
39.00
0.31
-0.35
UR
49.0
49.0
45.0
2.31
0.473
47.67
3.31
2.66
uv
35.0
41.0
34.0
3.79
0.827
36.67
-0.50
-1.15
ux
40.0
40.0
40.0
0.00
0.000
40.00
0.66
0.00
• =
No data submitted

TAG SYMBOLS

ft s Above control limit
0 = Insufficient data	x = Determined to be an outlier	W = Below control limit
-------
E8D-LV Performance Evaluation: Gamma in Water, 5-Jun-1998
35/37
Barium-133
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
UY
41.0
31.0
39.0
5.29
1.345
37.00
-0.38
-1.04

VA
38.0
43.0
36.0
3.61
0.827
39.00
0.31
-0.35

VC
38.0
38.0
39.0
0.58
0.118
38.33
0.08
-0.58

VE
41.0
44.0
43.0
1.53
0.354
42.67
1.58
0.92

VH
38.0
33.0
34.0
2.65
0.591
35.00
-1.08
-1.73

VI
39.0
37.0
36.0
1.53
0.354
37.33
-0.27
-0.92

VM
39.0
39.0
39.0
0.00
0.000
39.00
0.31
-0.35

vo
40.0
40.0
42.0
1.15
0.236
40.67
0.89
0.23

vs
34.0
32.0
32.0
1.15
0.236
32.67
-1.88
-2.54

w
39.0
39.0
39.0
0.00
0.000
39.00
0.31
-0.35

WD
36.0
38.0
40.0
2.00
0.473
38.00
-0.04
-0.69

wi








•
WJ
39.0
40.0
35.0
2.65
0.591
38.00
-0.04
-0.69

WK
37.0
37.0
36.0
0.58
0.118
36.67
-0.50
-1.15

wo
25.0
30.0
34.0
4.51
1.120
29.67
-2.92
-3.58

WR
35.0
36.0
40.0
2.65
0.591
37.00
-0.38
-1.04

ws
41.0
42.0
42.0
0.58
0.118
41.67
1.23
0.58

WV
37.0
37.0
37.0
0.00
0.000
37.00
-0.38
-1.04

WW
38.0
39.0
38.0
0.58
0.118
38.33
008
-0.58

wx








. *
X
37.0
37.0
37.0
0.00
0.000
37.00
-0.38
-1.04

XA








•
XB
400
38.0
37.0
1.53
0.354
38.33
0.08
-0.58

XC








•
XD
38.0
38.0
39.0
0.58
0.118
38.33
0.08
-0.58

XF
35.0
36.0
35.0
0.58
0.118
35.33
-0.96
-1.62

XG
38.0
39.0
39.0
0.58
0.118
38.67
0.19
-0.46

XI
34.0
36.0
36.0
1.15
0.236
35.33
-0.96
-1.62

XK
36.0
39.0
41.0
2.52
0.591
38.67
0.19
-0.46

xo








, 9
XQ
49.0
52.0
380
7.37
2.245
46.33
2.85
219

XR








0
Y
40.0
40.0
41.0
0.58
0.118
40.33
0.77
0.12

Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
17.00
X
KH
33.00

QT
35.00

CJ
25.00
X
AJ
33.33

TC
35.33

XI
28.00
X
LR
33.67

TD
35.33

XF
29.67
u
WO
34.33

RZ
35.33

QP
30.00
il
SI
34.33

AH
35.33

BC
32.00

BH
34.67

JS
35.33

BA
32.67

VS
35.00

VH
35.67

TU
32.67

EX
35.00

OT
36.00

SN
32.67

AK
35.00

JM
36.00

I
• s No data submitted
0 = Insufficient data
TAG SYMBOLS
x s Determined to be an outlier
It = Above control limit
= Below control limit

-------
36 / 37	ESD-LV Performance Evaluation: Gamma in Water, 5-Jirn-1998
v			
Barium-133
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
36.00

GL
38.00

HI
39.67

PX
36.00

DH
38.00

FE
39.67

BN
36.00

CA
38.00

EL
39.67

BM
36.00

At
38.00

C
40.00

UX
36.33

MX
38.00

AL
40.00

LF
36.67

WK
38.00

AE
40.00

GQ
36.67

UV
38.33

XD
40.00

CX
36.67

SD
38.33

XB
40.00

AW
36.67

PW
38.33

WW
40.33

Y
36.67

MP
38.33

VC
40.33

SM
36.67

DR
38.33

SR
40.33

NO
36.67

AP
38.33

Q
40.33

MT
37.00

X
38.33

KX
40.33

HP
37.00

wv
38.33

JE
40.33

HL
37.00

WR
38.33

DD
40.33

FL
37.00

UY
38.33

BO
40.67

VO
37.00

TQ
38.33

BB
40.67

JY
37.00

SZ
38.67

XK
40.67

BL
37.00

R
38.67

XG
41.00

SV
37.00

EB
38.67

QZ
41.00

HE
37.00

AU
38.67

PM
41.00

CP
37.00

AF
38.67

OM
41.33

SX
37.33

VI
38.67

N
41.33

QU
37.33

RU
38.67

FJ
41.67

WS
37.33

OA
38.67

EW
41.67

CO
37.33

NP
39.00

W
41.67

BK
37.33

HK
39.00

VM
42.33

s
37.67

P
39.00

VA
42.33

QW
37.67

E
39.00

UP
42.33

AZ
37.67

DT
39.00

SS
42.67

VE
37.67

DE
39.00

NJ
43.00

RX
38.00

WJ
39.00

L
43.00

PD
38.00

WD
39.00

K
46.33

XQ
38.00

T
39.00

DO
47.67

UR
38.00

RO
39.00

D
47.67

QM
38.00

O
39.00

A
52.00
X
TO
38.00

KL
39.33

CE
74.33
89.67
X
X
TR
CS
• = No data submitted	TAG SYMBOLS	ft = Above control limit
Qi = Insufficient data	x = Determined to be an outlier	^ = Below control limit J
v-	'	—y
-------
ESD-LV Performance Evaluation: Gamma in Water, 5-Jun-1998
37/37
Barium-133
% responding labs	Frequency distribution
plBBlliSliltlMf
10-
i -I ~ I ~~ i "--f---—f--¦T-""T	1 ¦ "—i	r"	1	r®"
-6	-4	-2	0+2+4	+6
Normalized deviation of the mean from the known value
% responding labs	Frequency distribution
10-
jt
		- t Jl-llJllllf- ¦			
I - T	** I —-y-—J—-y— ,	— i ~	1	~ i	
-4	-2	0+2+4	+6
Normalized deviation of the mean from the grand average
-------
United States
Environmental Protection
Agency
Office of Research and
Development
Washington, DC 20460
EPA/600/R-98/119
September 1998
EPA Uranium-Radium in
Water Performance
Evaluation Study
A Statistical Evaluation
of the June 12, 1998 Data
-------
Uranium-Radium in Water
Performance Evaluation Study
June 12, 1998
Environmental Protection Agency
National Exposure Research Laboratory
Environmental Sciences Division
Las Vegas, Nevada
-------
A
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
OFFICE OF RESEARCH AND DEVELOPMENT
NATIONAL EXPOSURE RESEARCH LABORATORY
ENVIRONMENTAL SCIENCES DIVISION-LAS VEGAS
P.O. BOX 93478
LAS VEGAS, NEVADA 89193-3478
(702/798-2100)
Dear Participant,
Enclosed are the results of the Environmental Sciences Division (ESD-LV)
Performance Evaluation Study for Uranium-Radium in Water; June 12, 1998.
The known value for each analysis was determined by gravimetric methods,
checked by chemical analyses performed by ESD-LV's Radiochemistry Laboratory,
and compared to the participating laboratories' grand average.
The expected precision, determined by the known value, was taken from
'Table 3. Laboratory Precision: One Standard Deviation Values and Control Limits
for Various Analyses", which is based on data accumulated over the years by the
Performance Evaluation Program, and can be found in the Environmental Radioactivity
Performance Evaluation Studies Program and Radioactive Standards Distribution
Program information brochure.
Please take a few minutes to review this report and the analytical data your
laboratory submitted to us. If there are any apparent discrepancies, please notify us
immediately.
We encourage you to make use of the computer-automated data-entry system
that has been in place for some time now. As the number of participants increases,
and it becomes unrealistic for us to receive results by mail or FAX, the computer
system will be our only avenue for accepting data.
If you have any questions or comments, please send a message via the data-entry
system or contact Stephen Pia at 702/798-2102 or Patricia Honsa at 702/798-2141.
Stephen Pia
Team Leader
RADQA Program
Enclosure
-------
NOTICE
This material has been funded wholly by
the U.S. Environmental Protection Agency.
It has been subjected to the Agency's review,
and has been approved for publication as
an EPA document.
-------
ESD-LV Performance Evaluation: Uranium-Radium in Water, 12-Jun-1998 1/20
The following pages consist of separate sections for each of the nuclides in this study with four
parts per section. After the first, each part is separated from the next by a new page or a thick
horizontal bar. The first page of each section is a statistical summary for the nuclide and starts
with a statement of the known value, the control limits, and the warning limits.
The warning limits are placed at two normalized standard deviations above and below the
known value and the control limits are three normalized standard deviations above and below
the known value. If you keep control charts, these values will be useful for anticipating problems
with the accuracy of your analytical methods.
The coin shaped pie chart at the top of the summary page shows the fate of all the samples
sent out in number and percentage terms. The pie chart starts at the top and rotates clockwise.
The first sector represents those participants who submitted analytical results within both the
warning and control limits. The next sector represents those who are in the warning region but
not out of control. The third sector represents those who are out of control, but have passed
the outlier test. The fourth sector represents those who have failed the outlier test. The last
sector represents those participants who have failed to respond properly. This is the case if no
analytical results were returned, or less than three determinations were reported, or if the results
were received too late. The reeding on the edge of the coin is spaced at one percent intervals, and
the sector shading becomes darker as the data reliability decreases. Sectors with zero width are
not shown.
The table in the center shows a number of statistical quantities calculated from the submitted
data based on the mean and median values in relation to the known value, both before and after
outlier removal. The lower pie chart uses the same construction as the upper chart and shows
the distribution of properly submitted data in terms of deviation from the known value divided
into sectors representing one, two, three, and greater than three normalized standard deviations.
The second part is an alphabetical listing, in lab-code order, of submitted data and several
calculated quantities. An entry that is shaded has been rejected because of one of the reasons
listed above or failure of the outlier test. The fifth and sixth columns are a measure of laboratory
precision. The Range analysis is a normalized value that you may use to keep precision control
charts. The eighth and ninth columns Eire the differences from the mean of all non-outliers and
from the known value, respectively. If this value is between 2.0 and 3.0, your analytical process
precision is in the warning zone; if it exceeds 3.0 it is out of control. A tag symbol may appear in
the last column. Each page with tags has a symbol definition summary at the bottom. If there is
no tag symbol, the data is within the control limits, but it may be in the warning zone.
The third part is a three-column listing of result average, tag symbol, and lab-code in average
order excluding those labs not responding properly. In this order, all outliers and out-of-control
results appear at the top or bottom of the list.
The last part is two bar chart displays showing frequency distributions of responding
participants. The first chart places the known value at the center and a bar at each 0.2 unit of
expected precision. The second chart places the mean of the reported measurements at the center
and a bar at each 0.2 unit of standard deviation. In both cases, a bar includes those results within
0.1 unit up to the maximum of six. Any results more than six units from the center value are
shown cumulatively by a shaded bar one past the sixth unit. If the central tendency of the known
value distribution falls away from the center, an error in accuracy is indicated. If the distribution
is broad, poor precision is indicated. The mean value distribution is similar but uses the average
and standard deviation of reported results as its basis.
-------
2/20
ESD-LV Performance Evaluation: Uranium-Radium in Water, 12-Jun-1998
The Range Analysis(R + SR) is calculated from the range, mean range and standard error of
the range values. The range is the difference between the maximum and minimum results for the
laboratory. The mean range is calculated by multiplying the expected precision by 1.693(for three
results). The standard error of the range is calculated by multiplying the mean range by 2.575(for
three results), subtracting the mean range from this product, and dividing the result by 3. If the
range is greater than the mean range, then the range analysis is calculated by subtracting the
mean range from the range, dividing the result by the standard error of the range and adding 1.
If the mean range is greater than or equal to the range, then the range analysis is calculated by
dividing the range by the mean range.
The normalized deviation of the mean from the grand average is calculated from the deviation
of the mean from the grand average and the standard error of the mean values. The deviation of
the mean from the grand average is calculated by subtracting the grand average from the
average of the laboratory's three results. The standard error of the mean is calculated by
dividing the expected precision by the square root of 3(the number of results). The normalized
deviation of the mean from the grand average is calculated by dividing the deviation of the mean
from the grand average by the standard error of the mean.
The normalized deviation of the mean from the known value is calculated from the deviation of
the mean from the known value and the standard error of the mean values. The deviation of the
mean from the known value is calculated by subtracting the known value from the average of the
laboratory's three results. The standard error of the mean is calculated by dividing the expected
precision by the square root of 3(the number of results). The normalized deviation of the mean
from the known value is calculated by dividing the deviation of the mean from the known value by
the standard error of the mean.
A complete explanation of the statistical calculations involved in the report may be found in
the Environmental Radioactivity Performance Evaluation Studies Program information brochure
[Draft Revision of EPA-600/4-81-004], available from Patricia Honsa, ESD-LV, 702/798-2141.
-------
ESD-LV Performance Evaluation: Uranium-Radium in Water, 12-»Jun-1998 3/20
Uranium (Natural)	Statistical Summary	148 Participants
The known value of this nuclide is 3.0 pCi/1 with an expected precision of 3.0; the control limits
are 0.0 to 8.2; the warning regions are 0.0 to 0.0 and 6.5 to 8.2
47(31.8 %¦) Failed to respond •
; 96(64.9 %) Within all limits
* x K
* \J V
* \ Pn.
^ x. Nv
* N. X
~ P-S.
0 NJ Ps.
5(3.4 %) Outliers '*
i

Statistic
Respondents
Non-outliers
Mean
4.66
Grand Avg 3.15
Std. Dev.
7.97
0.67
Variance
63.45
0.45
% Coef. of Var.
170.89
21.18
% deviation of mean from known value
55.38
5.09
Norm. dev. of mean from known value
0.21
0.23
Median
3.07
3.07
% deviation of median from known value
2.22
2.22
Norm. dev. of median from known value
0.01
0.10
5(5.0 %) Mors than 3 norm. S.D. «,
; 92(91.1 %) Within 1 norm. S.D.
«
!	of known value
/yffZ ''-I/*
...

¦ '	f-
; i. 5} >
f , > ;fi.r ^
¦V#» „4V'>SJV«.Vx**"	."• - ••
-v*
•'•¦ , 'i£\>
' -V- vi >~:	,, •<•,• -
•' K'- xA-f« i
• -	C^^-V'^r
'••¦<'"i»jr v /y/-^
•sjzvtg/y fr/fbige'
, ''<~ ->..+ v'"' ?
¦',
* > '¦/;* vV /-W	"t'C-.v*
* 1 V. A	V£v.^'
' .'a-AS •-> v'/£
. - ¦+/,
%% 4(4.0 %) Between 1 and 2 norm. S.D.
-------
f(	








	^
4/20 ESD-LV Performance Evaluation: Uranium-Radium in Water, 12-Jun-1998
v

Uranium (Natural)







Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation

Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
A
3.0
3.0
3.0
0.00
0.000
3.00
-0.09
0.00

AE
3.3
3.0
3.6
0.30
0.118
3.30
0.08
0.17

AF
3.7
3.7
3.3
0.23
0.079
3.57
0.24
0.33

AH
3.0
2.7
2.8
0.15
0.059
2.83
-0.18
-0.10

AJ
2.7
4.0
3.8
0.70
0.256
3.50
0.20
0.29

AK
3.2
3.7
3.6
0.26
0.098
3.50
0.20
0.29

AL
3.4
3.4
3.2
0.12
0.039
3.33
010
0.19

AP








" • •
AR
2.8
2.7
2.8
0.06
0.020
2.77
-0.22
-0.13

AU








•
AW
3.9
4.2
4.4
0.25
0.098
4.17
0.59
0.67

AZ
3.1
3.2
2.9
0.15
0.059
3.07
-0.05
0.04

BA
3.6
4.5
4.5
0.52
0.177
4.20
0.60
0.69

BC
2.7
2.8
2.8
0.06
0.020
2.77
-0.22
-0.13

BO








' •
BH
3.9
3.0
3.9
0.52
0.177
3.60
0.26
0.35

BK
3.1
3.2
3.2
0.06
0.020
3.17
0.01
0.10

BM
3.2
3.6
2.9
0.35
0.138
3.23
0.05
0.13

BN
3.1
3.1
2.1
0.58
0.197
2.77
-0.22
-0.13

BO
3.2
3.2
3.1
0.06
0.020
3.17
0.01
0.10

C
2.8
3.1
3.4
0.30
0.118
3.10
-0.03
0.06

CA
3.0
3.2
2.8
0.20
0.079
3.00
-0.09
0.00

CC








•
CE
2.4
2.7
2.4
0.17
0.059
2.50
-0.38
-0.29

CJ
3.0
3.0
2.9
0.06
0.020
2.97
-0.11
-0.02

cs
3.2
3.0
3.0
0.12
0.039
3.07
-0.05
0.04

cx
3.4
3.5
3.6
0.10
0.039
3.50
0.20
0.29

D
3.1
2.9
3.1
0.12
0.039
3.03
-0.07
0.02

DB
2.2
2.6
1.9
0.35
0.138
2.23
-0.53
-0.44

DE
3.0
3.0
3.0
0.00
0.000
3.00
-0.09
0.00

DI








' •
DO
2.8
2.8
3.0
0.12
0.039
2.87
-0.17
-0.08

DR








• •
DT
3.1
2.8
3.0
0.15
0.059
2.97
-0.11
-0.02

DZ
4.9
4.5
4.8
0.21
0.079
4.73
0.91
1.00

E
3.1
2.7
2.9
0.20
0.079
2.90
-0.15
-0.06

EB
3.0
2.8
2.5
0.25
0.098
2.77
-0.22
-0.13

EL
3.4
3.5
3.4
0.06
0.020
3.43
0.16
0.25

EO








f -
' EP:-








•
ER
3.3
3.2
3.1
0.10
0.039
3.20
0.03
0.12

JFE.








•
FJ
3.2
3.2
3.2
0.00
0.000
3.20
0.03
0.12

FN
0.1
0.2
0.2
0.06
0.020
0.17
-1.72
-1.64

GN
3.4
3.6
3.8
0.20
0.079
3.60
0.26
0.35

• =
No data submitted

TAG SYMBOLS

IT = Above control limit
0 =
V	
Insufficient data
x =
Determined to be an outlier
J] = Below control limit
-------
6	








	N
V
ESD-LV Performance Evaluation: Uranium-Radium in Water, 12-Jun-1998 5/20
r 		——
Uranium (Natural)







Lab
Res. 1


Exper.
Rng anal

Normalized deviation

Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
GQ
3.4
2.9
3.2
0.25
0.098
3.17
0.01
0.10

HE
2.7
2.8
2.7
0.06
0.020
2.73
-0.24
-0.15

HK
3.2
3.4
3.4
0.12
0.039
3.33
0.10
0.19

HL
3.2
3.0
2.8
0.20
0.079
3.00
-0.09
0.00

HP
3.6
3.3
3.3
0.17
0.059
3.40
0.14
0.23

I
3.3
3.4
3.8
0.26
0.098
3.50
0.20
0.29

ro
J
3.3
3.3
3.2
0.06
0.020
3.27
0.07
0.15

JE
2.8
2.9
2.6
0.15
0.059
2.77
-0.22
-0.13
" *
JG








' \ "¦
.. % «
JK
2.8
2.9
2.8
0.06
0.020
2.83
-0.18
-0.10

JN
3.0
3.1
3.4
0.21
0.079
3.17
0.01
0.10


S02
69.6
58.6
0.81
0315
59.47
32-51
32.60
i
X
OX








•
JY
3.0
3.4
2.7
0.35
0.138
3.03
-0.07.
0.02

K
3.0
3.6
3.4
0.31
0.118
3.33
0.10
0.19

KH
2.9
2.9
2.8
0.06
0.020
2.87
-0.17
-0.08

KL








•
KT
3.0
4.0
5.0
1.00
0.394
4.00
0.49
0.58

L
3.2
3.0
3.0
0.12
0.039
3.07
-0.05
0.04

LF
3.2
3.0
2.7
0.25
0.098
2.97
0.11
-0.02

LH








•
LZ
3.2
3.1
3.1
0.06
0.020
3.13
-0.01
0.08

M








•
MF








•
MX
5.9
5.2
4.4
0.75
0.295
5.17
1.16
1.25

N
2.8
2.4
2.6
0.20
0.079
2.60
-0.32
-0.23
'
NA








> ' i
NH
3.0
4^8
5.4
1.25
0.473
4.40
0.72
0.81

NJ
3.1
3.2
2.9
0.15
0.059
307
-0.05
0.04

:;NK-








•
NO








» -
O









OB
4.3
4.3
3.2
0.64
0.217
3.93
0.45
0.54

OF








• .
OS


62.7
4.65
2.583
48.13
25M
26 06
X
Tox:









p
3.5
4.2
4.8
0.65
0.256
417
0.69
0.67

pi








> rf. •
9?
PG
9;7
108
11.2
0.78
0.295
10.67
4.28
4.37
¦X
PW
4.6
3.5
5.7
1.10
0.433
4.60
0.84
0.92

PX
39,6
409
33.0
4.24
2.058
37;83
2042
20.11
"x
Q
4.0
4.0
3.0
0.58
0.197
3.67
0.30
0.38

QM
4.2
4.2
4.2
0.00
0.000
4.20
0.60
0.69

QQ
2.5
2.1
2.6
0.26
0.098
2.40
-0.43
-0.35

• =
No data submitted

TAG SYMBOLS

fT = Above control limit
0 s
Insufficient data
x =
Determined to be an outlier
Ji = Below control limit
-------
6/20 ESD-LV Performance Evaluation: Uranium-Radium in Water, 12-Jun-1998
Uranium (Natural)
Lab
Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
QU
3.0
3.2
3.0
0.12
0.039
3.07
-0.05
0.04











QZ
2.9
2.9
2.9
0.00
0.000
2.90
-0.15
-0.06

R








/ O '
RD
3.2
2.9
3.0
0.15
0.059
3.03
-0.07
0,02

RG








•
RK
2.4
2.7
2.7
0.17
0.059
2.60
-0.32
-0.23

RP
28
2.8
2.9
0.06
0.020
2.83
-0.18
-0.10

RR








• /
RX
2.8
3.1
4.0
0.62
0.236
3.30
0.08
0.17

RZ
2.1
2.1
2.5
0.23
0.079
2.23
-0.53
-0.44

S
2.8
2.6
2.6
0.12
0.039
2.67
-0.28
-0.19

SD
2.7
3.2
3.6
0.45
0.177
3.17
0.01
0.10

SF '








' •
SI
3.6
3.5
3.6
0.06
0.020
3.57
0.24
0.33

SL
1.5
1.4
1.4
0.06
0.020
1.43
-0.99
-0.90

SM
2.9
3.0
3.1
0.10
0.039
3.00
-0.09
0.00

SO
3.1
2.6
2.8
0.25
0.098
2.83
-0.18
-0.10

ss
3.1
3.2
2.9
0.15
0.059
3.07
-0.05
0.04

sx
3.1
3.0
2.7
0.21
0.079
2.93
-0.13
-0.04

sz
2.9
2.9
2.7
0.12
0.039
2.83
-0.18
¦°10

T :








•
TD
3.0
3.0
2.9
006
0.020
2.97
-0.11
-0.02

TN








•
TQ
2.8
31
3.1
0.17
0.059
3.00
-0.09
0.00

TU








¦ *
U
3.6
3.4
3.5
0.10
0.039
3.50
0.20
0.29

UM








•
UP
2.7
2.6
2.3
0.21
0.079
2.53
-0.36
-0.27

UQ









UR








:
VZ
10.3
.Ilifri
14i6
2.22
0.847
12.13
5.18
, 5.27
- X-: '
VA








^ •
VH
5.3
5.3
5.5
0.12
0.039
5.37
1.28
1.37

VI
2.8
3.0
3.0
0.12
0.039
2.93
-0.13
-0.04

W
3.6
3.8
3.7
0.10
0.039
3.70
0.32
0.40

:WC;








>'• '
WG
3.4
3.2
3.2
0.12
0.039
3.27
0.07
0.15

WH
2.5
2.5
2.3
0.12
0.039
2.43
-0.42
-0.33

WI
3.0
3.1
3.0
0.06
0.020
3.03
-0.07
0.02

WJ
3.5
3.2
3.4
0.15
0.059
3.37
0.12
0.21

WO
2.7
2.7
2.7
0.00
0.000
2.70
-0.26
-0.17

WR
2.8
3.0
3.2
0.20
0.079
3.00
-0.09
0.00

JfSh








wx
>







"m
• =
I?.-
No data submitted
Insufficient data
X 5
TAG SYMBOLS
Determined to be an outlier
ft = Above control limit
U = Below control limit
-------
ESD-LV Performance Evaluation: Uranium-Radium in Water, 12-Jun-1998 7/20
=*y
Uranium (Natural)
Exper. Rng anal	Normalized deviation
Lab Res. 1 Res. 2 Res. 3 Sigma (R + SR) Average (grand-avg) (known) Tag
2.6
3.0
2.3
2.9
3.0
3.3
2.4
3.3
3.2
3.2
2.4
2.8
0.31
0.15
0.06
0.26
0.118
0.059
0.020
0.098
2.93
3.17
2.37
3.00
-0.13
0.01
-0.45
-0.09
-0.04
0.10
-0.37
0.00
• ¦
• «
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
0.17

FN
2.93

VI
3.17

GQ
1.43

SL
2.93

sx
3.17

BO
2.23

RZ
2.97

DT
3.17

BK
2.23

DB
2.97

TD
3.20

FJ
2.37

XL
2.97

LF
3.20

ER
2.40

QQ
2.97

CJ
3.23

BM
2.43

WH
3.00

XM
3.27

WG
2.50

CE
3.00

WR
3.27

ID
2.53

UP
3.00

TQ
3.30

RX
2.60

RK
3.00

SM
3.30

AE
2.60

N
3.00

HL
3.33

K
2.67

S
3.00

DE
3.33

HK
2.70

WO
3.00

CA
3.33

AL
2.73

HE
3.00

A
3.37

WJ
2.77

JE
3.03

WI
3.40

HP
2.77

EB
3.03

RD
3.43

EL
2.77

BN
3.03

JY
3.50

U
2.77

BC
3.03

D
3.50

I
2.77

AR
3.07

SS
3.50

CX
2.83

SZ
3.07

QU
3.50

AK
2.83

SO
3.07

NJ
3.50

AJ
2.83

RP
3.07

L
3.57

SI
2.83

JK
3.07

CS
3.57

AF
2.83

AH
3.07

AZ
3.60

GN
2.87

KH
3.10

C
3.60

BH
2.87

DO
3.13

LZ
3.67

Q
2.90

E
3.17

XI
3.70

W
2.90

QZ
3.17

SD
3.93

OB
2.93

X
3.17

JN
4.00

KT
• s No data submitted

TAG SYMBOLS

ir
s Above control limit
0 ^ Insufficient data

x = Determined to be an outlier
u
= Below control limit
-------
8/20 ESD-LV Performance Evaluation: Uranium-Radium in Water, 12-Jun-1998
Uranium (Natural)
Data sorted by Laboratory Average
Average Tag
Lab
Average
Tag Lab
Average
Tag
Lab
4.17
P
4.40
NH
10.57
X
PG
4.17
AW
4.60
PW
12.13
X
UZ
4.20
QM
4.73
DZ
37.83
X
PX
4.20
BA
5.17
MX
48.13
X
OS


5.37
VH
59.47
X
JS
% responding labs

Frequency distribution



40-
30
20-
10-
Normalized deviation of the mean from the known value
% responding labs
Frequency distribution
30-
20-
10-
-4	-2	0	+2
Normalized deviation of the mean from the grand average
• = No data submitted	TAG SYMBOLS	tt = Above control limit
0 = TnfluffiMent Hnt.n	x = Determined to be an outlier	= Below control limit
-------
ESD-LV Performance Evaluation: Uranium-Radium in Water, 12-Jun-1998 9/20
Radium-226
Statistical Summary
148 Participants
The known value of this nuclide is 4.9 pCi/1 with an expected precision of 0.7; the control limits
are 3.7 to 6.1; the warning regions are 3.7 to 4.1 and 5.7 to 6.1
54(36.5 %) Failed to respond ,
, 69(46.6 %) Within all limits
7(4.7 %) Outliers	
12(8.1 %) Out of control
but not an outlier
Statistic
Respondents
---- 6(4.1 %) In warning zone
but within control
Non-outliers
Mean
5.59
Grand Avg 4.70
Std. Dev.
8.04
0.70
Variance
64.64
0.49
% Coef. of Var.
143.80
14.83
% deviation of mean from known value
14.10
-4.14
Norm. dev. of mean from known value
0.09
-0.29
Median
4.80
4.80
% deviation of median from known value
-2.04
-2.04
Norm. dev. of median from known value
-0.01
-0.14
19(20.2 %) More than 3 norm. S.D. •
;48(51.1 %) Within 1 norm. S.D.
!	of known value

.+ J	^
V'	}¦'».
- 4	-
WHi - ^
'A

4y;2'^yj iJ'C
.•'A-	w
/.}",¦>" A'» -;»i V,.
5. />r"' - v ','
-1**¦*"(& ' ' '
6(6.4 %) Between 2 and 3 norm. S.D.*
T
L£-"**21 (22.3 %) Between 1 and 2 norm. S.D.

-------
10/20 ESD-LV Performance Evaluation: Uranium-Radium in Water, 12-«Jun-1998
V
"— ¦ '' 	
Radium-226
Exper. Rng anal	Normalized deviation
Lab
Res. 1
Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
A
4.6
4.7
4.7
0.06
0.084
4.67
-0.07
-0.58
AE
4.4
4.6
4.6
0.12
0.169
4.53
-0.40
-0.91
AF
4.8
4.8
4.9
0.06
0.084
4.83
0.34
-a16
AH







•
AJ
5.9
4.5
5.2
0.70
1.345
5.20
1.24
0.74
AK
4.9
4.6
4.9
0.17
0.253
4.80
0.26
-0.25
AL
4.6
4.8
5.0
0.20
0.338
4.80
0.26
-0.25
AP







• -
AR







•
AU
2il
2.2
2.1
0.06
0.084
2.13
-6.34
-6.85 . x
AW
4.8
5.1
5.4
0.30
0.506
5.10
1.00
0.49
AZ
5.8
5.4
4.8
0.50
0.844
5.33
1.57
1.07
BA
5.9
5.0
5.4
0.45
0.759
5.43
1.82
1.32
BC
80.9
81.6
83.8
1.51
3.756
82.10
191.52
191.02 x
BQ







.. •
BH
4.2
5.1
5.1
0.52
0.759
4.80
0.26
-0.25
BK
4.9
4.8
4.9
0.06
0.084
4.87
0.42
-0.08
BM
4.9
5.1
5.0
0.10
0.169
5.00
0.75
0.25
BN
4.2
4.7
4.5
0.25
0.422
4.47
-0.57
-1.07
BO
5.0
5.2
4.6
0.31
0.506
4.93
0.58
0.08
C
5.1
4.9
4.8
0.15
0.253
4.93
0.58
0.08
CA
4.3
5.0
4.7
0.35
0.591
4.67
-0.07
-0.58
CC







•
CE
5.2
4.5
4.6
0.38
0.591
4.77
0.17
-0.33
CJ
3.5
4.8
5.1
0.85
1.667
4.47
-0.57
-1.07
cs
4.7
5.5
4.7
0.46
0.675
4.97
°-67
0.16
cx







' »¦
D








DB
5.0
4.9
4.8
0.10
0.169
4.90
0.50
0.00
DE
4.9
4.9
5.0
0.06
0.084
4.93
0.58
0.08
DI







6 ...
DO







•
DR







•
DT
4.3
4.8
5.1
0.40
0.675
4.73
0.09
-0^41
DZ
5.2
5.5
5.7
0.25
0.422
5.47
1.90
1.40
E
4.3
4.5
4.6
0.15
0.253
4.47
-0.57
-1.07
EB
4.1
4.1
4.2
0.06
0.084
4.13
-1.39
-1.90
EL
4.7
4.9
4.6
0.15
0.253
4.73
0.09
-0.41
EO
4.9
4.7
4.8
0.10
0.169
4.80
0.26
-0.25
efV'







"'9
ER
4.9
5.4
4.9
0.29
0.422
5.07
0.91
0.41








• • '
FJ







• ' -
FN
5.1
6.1
5.6
0.50
0.844
5.60
2.23
1.73
GN
4.6
5.1
5.2
0.32
0.506
4.97
0.67
0.16
• s No data submitted	TAG SYMBOLS	1T & Above control limit
0 g Insufficient data	x = Determined to be an outlier	# a Below control limit
-------
ESD-LV Performance Evaluation: Uranium-Radium in Water, 12-Jun-1998 11/20
Radium-226
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
GQ
3.9
3.5
3.6
0.21
0.338
3.67
-2.55
-3.05
Jl
HE
4.3
4.0
4.2
0.15
0.253
4.17
-1.31
-1.81

HK
4.9
4.7
4.9
0.12
0.169
4.83
0.34
-0.16

HL
4.5
5.3
4.5
0.46
0.675
4.77
0.17
-0.33

HP
5.3
4.8
5.2
0.26
0.422
5.10
1.00
0.49

I
4.1
4.2
4.7
0.32
0.506
4.33
-0.90
-1.40

ID
J
5.5
4.8
4.7
0.44
0.675
5.00
0.75
0.25

JE
5.4
5.2
5.4
0.12
0.169
5.33
1.57
1.07
V -
JG








% -v
' JK








im
JN'5'








;V'-
JS
4.9
4.6
4.3
0.30
0.506
4.60
-0.24
-0.74

JX
5.0
5.2
4.6
0.31
0.506
4.93
0.58
0.08

JY
8 0
7.9
6U
0.90
1.667
7 43
6.77
6.27
x;
K
5.7
4.8
4.5
0.62
1.024
5.00
0.75
0.25

KH
4.9
4.4
4.6
0.25
0.422
4.63
-0.16
-0.66

KL
6.5
5.4
5.6
0.59
0.928
5.83
2.81
2.31

KT








'
L
4.4
4.0
3.9
0.26
0.422
4.10
-1.48
-1.98

LF








• '
LH








; •
LZ
5.2
5.2
5.3
0.06
0.084
5.23
1.33
0.82

M
3.7
4.4
3.0
0.70
1.345
3.70
-2.47
-2.97

MF
3.4
2.7
2.7
0.40
0.591
2.93
-4.36
-4.87
u
MX
3.8
3.1
3.6
0.36
0.591
3.50
-2.96
-3.46
u
N
5.0
4.9
5.0
0.06
0.084
4.97
0.67
0.16

NA








i
NH
4.5
4.8
4.7
0.15
0.253
4.67
-0.07
-0.58
1
NJ
4.4
3.5
3.2
0.62
1.024
3.70
-2.47
-2.97

NK









NO








* j*
O
5.2
5.2
4.7
0.29
0.422
5.03
0.83
0.33

OB








*
6f








*
OS








0
OX
5.2
5.1
5.2
0.06
0.084
5.17
1.16
0.66

P
4.3
4.9
4.9
0.35
0.506
4.70
0.01
-0.49

Mi









PG
i:6
18
1.8
0.12
0.169
1.73
-7.33
-7.84
:k';
PW
3.0
2.2
3.8
0.80
1.667
3.00
-4.20
-4.70
V
PX
5.6
5.2
5.4
0.20
0.338
5.40
1.74
1.24

Q
3.3
3.3
3.5
0.12
0.169
3.37
-3.29
-3.79











QQ
6.3
5.6
4.9
0.70
1.345
5.60
2.23
1.73

• s No data submitted	TAG SYMBOLS	ft s Above control limit
0 = Insufficient data		x = Determined to be an outlier	II = Below control limit
-------
12 / 20 ESD-LV Performance Evaluation: Uranium-Radium in Water, 12-Jun-1998
Radium-226
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
-
Normalized deviation
(grand-avg) (known) Tag
QU
2.9
3.0
3.1
0.10
0.169
3.00
-4.20
-4.70

QX








•
QZ
5.2
5.5
4.8
0.35
0.591
5.17
1.16
0.66

R
4.7
4.4
4.5
0.15
0.253
4.53
-0.40
-0.91

RD
9.1
.8.8
8.3
0.40
0.675
8.73
9.99
9.49
X
RG









RK
37
4.8
4.4
0.56
0.928
4.30
-0.98
-1.48

RP








•
BR









RX
8.0
6 8
8.2
0.76
1:345
7.67
7.35
6.85
X
RZ
6.2
6.3
6.4
0.10
0.169
6.30
3.97
3.46

S
5.1
5.1
5.1
0.00
0.000
5.10
1.00
0.49

SD
3.5
3.7
4.1
0.31
0.506
3.77
-2.30
-2.8°

8F








•
SI
4.5
4.2
4.4
0.15
0.253
4.37
-0.82
-1.32

SL








•
SM
5.4
5.4
5.4
0.00
0.000
5.40
1.74
1.24

SO








•
SS
4.8
5.1
4.5
0.30
0.506
4.80
0.26
-0.25

sx
4.3
4.1
4.5
0.20
0.338
4.30
-0.98
-1.48

sz
4.5
3.7
3.6
0.49
0.759
3.93
-1.89
-2.39

T








•
TD
3.2
3.6
3.5
0.21
0.338
3.43
-3.13
-3.63

TN
4.8
3.8
5.1
0.68
1.185
4.57
-0.32
-0.82

TQ
5.3
5.1
4.6
0.36
0.591
5.00
0.75
0.25

TU








~
U
4.4
4.3
4.5
0.10
0.169
4.40
-0.73
-1.24

UM








•
UP
4.9
5.0
5.1
0.10
0.169
5.00
0.75
0.25

UQ
4.9
4.9
5.1
0.12
0.169
4.97
0.67
0.16

UR








•
UZ








•
VA
6.7
6.2
6.1
0.32
0.506
6.33
4.05
3.55
it
VH
6.5
7 9
7.0
0.71
1.346
7.13
6.03
5.53
X
VI
4.1
4.3
3.8
0.25
0.422
4.07
-1.56
-2.06

W
4.9
4.4
4.5
0.26
0.422
4.60
-0.24
-0.74

WC
3.7
4.1
3.0
0.56
0.928
3.60
-2.71
-3.22
U
' WG









WH
4.7
5.0
4.7
017
0.253
4.80
0.26
-0.25

'wi '¦








•
WJ
4.9
5.0
4.6
0.21
0.338
4.83
0.34
-0.16

wo
61
5.7
6.7
0.50
0.844
6.17
3.64
3.13
It
WR








• V
WS








•
WX









• s No data submitted	TAG SYMBOLS	It = Above control limit
0 s Insufficient data	x = Determined to be an outlier	= Below control limit
-------
	^
ESD-LV Performance Evaluation: Uranium-Radium in Water, 12-Jun-1998 13 / 20
¦ ¦' 1
Radium-226







\
Lab Res. 1 Res. 2 Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
X 4.7 4.4
4.3
0.21
0.338
4.47
-0.57
-1.07

¦ 2LLI s-v-rv* v :
. y s •. ..N. V V.,, ,
' ,<7. *
, vs y
' :
ij, v ,,
*' "" Kj
'V:.

V#
»'o
XI 2.9 3.4
. ^ ; 7~
T , *. . , " ¦• 		 .-. <, " ,' - s" v '
•to
,'•45 00
s s<. /
0.32
0.506
3.03
-4.1.2
-4.62
II
- •«'
XL 5.0 5.1
5.1
0.06
0.084
5.07
0.91
0.41

XM 5.9 5.6
XO -
5.6
017
0.253
5.70
2.48
i.98
v • '
tm ¦¦.
' Alt :a ' ,



•
-


9
xs ''-
>





'
• ¦-
y







•
Df
Average Tag Lab
ita sorted by Laboratory Averaj
Average Tag Lab
:e
Average
Tag
Lab
1.73 x PG

4.53

AE

4.97

N
2.13 x AU

4.57

TN

4.97

GN
2.93 II MF

4.60

W

4.97

CS
3.00 II QU

4.60

JS

5.00

UP
3.00 U PW

4.63

KH

5.00

TQ
3.03 II XI

4.67

NH

5.00

K
3.37 II Q

4.67

CA

5.00

ID
3.43 II TD

4.67

A

5.00

BM
3.50 II MX

4.70

P

5.03

O
3.60 II WC

4.73

EL

5.07

XL
3.67 II GQ

4.73

DT

5.07

ER
3.70 NJ

4.77

HL

5.10

S
3.70 M

4.77

CE

5.10

HP
3.77 SD

4.80

WH

5.10

AW
3.93 SZ

4.80

BH

5.17

QZ
4.07 VI

4.80

SS

5.17

OX
4.10 L

4.80

EO

5.20

AJ
4.13 EB

4.80

AL

5.23

LZ
4.17 HE

4.80

AK

5.33

J Hi
4.30 SX

4.83

WJ

5.33

AZ
4.30 RK

4.83

HK

5.40

SM
4.33 I

4.83

AF

5.40

PX
4.37 SI

4.87

BK

5.43

BA
4.40 U

4.90

DB

5.47

DZ
4.47 X

4.93

JX

5.60

FN
4.47 E

4.93

DE

5.60

QQ
4.47 CJ

4.93

C

5.70

XM
4.47 BN

4.93

BO

5.83

KL
4.53 R

4.97

UQ

6.17
It
WO
• = No data submitted

TAG SYMBOLS


It s Above control limit
[ 0 = Insufficient data
x =
Determined to be an outlier

II = Below control limit
-------
14 / 20 ESD-LV Performance Evaluation: Uranium-Radium in Water, 12-Jun-1998
Radium-226
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
6.30
ft
RZ
7.13
X
VH
7.67
X
RX
6.33
ft
VA
7.43
X
JY
8.73
X
RD






82.10
X
BC
% responding labs
Frequency distribution
10.	
UL
IBJ
¦ip« — ^11 H,
III
iHlBBn ¦«. -	|jiBa.

T*"
+6
-6
-r ......	.
-4	-2	0	+2	+4
Normalized deviation of the mean from the known value
% responding labs
Frequency distribution
10-
-4	-2	0	+2	+4
Normalized deviation of the mean from the grand average
• s No data submitted
0 = Insufficient data
TAG SYMBOLS
x = Determined to be an outlier
ft = Above control limit
II s Below control limit
-------
ESD-LV Performance Evaluation: XJranium-Radium in Water, 12-Jon-1998 15 / 20
Radium-228
Statistical Summary
148 Participants
The known value of this nuclide ia 2.1 pCi/1 with an expected precision of 0.5; the control limits
are 1.2 to 3.0; the warning regions are 1.2 to 1.5 and 2.7 to 3.0
65(43.0 %) Failed to respond»
5(3.4 %) Outliers	
21(14.2 %) Out of control —-
but not an outlier
Statistic
, 45(30.4 %} Within efl limits
Respondents
* 12(8.1 %) In warning zone
but within control
Non-outliers
Mean
2.93
Grand Avg 2.62
Std. Dev.
1.57
0.64
Variance
2.46
0.41
% Coef. of Var.
53.53
24.32
% deviation of mean from known value
3&.47
24.70
Norm. dev. of mean from known value
0.53
0.81
Median
2.60
2.55
% deviation of median from known value
23.81
21.43
Norm. dev. of median from known value
0.32
0.71
27(32.5 %) Mora than 3 norm. S.O. •
11(13.3 %) Between 2 and 3 norm. S.D, *
. 18(21.7 %) Within 1 norm. S.D.
of known value
27(32.5 %) Between 1 and 2 norm. S.D.
-------
16 / 20 ESD-LV Performance Evaluation: Uranium-Radium in Water, 12-Jun-1998
Radium-228
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
A
2.7
3.0
2.4
0.30
0.709
2.70
0.28
2.08

AE
1.7
1.8
2.1
0.21
0.473
1.87
-2.61
-0.81

AF
2.5
2.5
2.4
0.06
0.118
2.47
-0.53
1.27

AH








•
AJ
2.2
3.7
2.0
0.93
2.921
2.63
0.05
1.85

AK
2.9
2.4
2.5
0.26
0.591
2.60
-0.07
1.73

AL
2.8
2.2
2.4
0.31
0.709
2.47
-0.53
1.27

AP








•
AR








•
AU








•
AW
2.9
3.0
3.3
0.21
0.473
3.07
1.55
3.35
ft
AZ
2.1
1.6
2.2
0.32
0.709
1.97
-2.26
-0.46

BA
3.9
3.6
3.9
0.17
0.354
3.80
4.09
5.89
ft
BC
2.4
2.7
2.9
0.25
0.591
2.67
0.17
1.96

BG








•
BH
2.8
2.1
2.3
0.36
0.827
2.40
-0.76
1.04

BK
1.9
2.1
2.1
0.12
0.236
2.03
-2.03
-0.23

BM
2.4
2.7
2.2
0.25
0.591
2.43
-0.64
1.15

BN








•
BO
2.5
2.8
2.1
0.35
0.827
2.47
-0.53
1.27

C
2.4
2.4
2.6
0.12
0.236
2.47
-0.53
1.27

CA
2.6
3.3
1.9
0.70
2.245
2.60
-0,°7
1.73

CC








•
CE
3.4
3.4
2.9
0.29
0.591
3.23
2.13
3.93
ft
CJ
2.1
1.7
2.0
0.21
0.473
1.93
-2.37
-0.58

CS
2.9
2.5
2.6
0.21
0.473
2.67
0.17
1.96

CX








• "
D








•
DB
1.8
1.9
1.7
0.10
0.236
1.80
-2.84
-1.04

DE
2.2
2.4
2.6
0.20
0.473
2.40
-0.76
1.04

DI








•
DO








+
DR








' »
DT
3.4
3.6
2.9
0.36
0.827
3.30
.2.36
4.16
ft
DZ
3.2
2.8
2.9
0.21
0.473
2.97
1.21
3.00

E
2.8
2.7
2.6
0.10
0.236
2.70
0.28
2.08

EB
2.6
3.0
3.2
0.31
0.709
2.93
1.09
2.89

EL
3.1
2.3
1.8
0.66
2.020
2.40
-0.76
1.04

EO
2.1
2.2
2.2
0.06
0.118
2.17
-1.57
0.23











ER








• .









•









•
FN
3.1
2.5
2.7
0.31
0.709
2.77
0.51
2.31

GN
4.2
4.6
4.5
0.21
0.473
4.43
6.29
8.08
ft
• = No data submitted	TAG SYMBOLS	ft = Above control limit
0 s Insufficient data	x = Determined to be an outlier	W = Below control limit J
^	==y
-------
ESD-LV Performance Evaluation: Uranium-Radium in Water, 12-Jun-1998 17 / 20
\		
I-	" '	" '	i ¦	.1	- 		
Radium-228
Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation

Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tap
GQ
2.9
2.3
3.4
0.55
1.570
2.87
0.86
2.66

HE
2.6
2.2
2.4
0.20
0.473
2.40
-0.76
1.04

HK
1.8
1.8
1.8
0.00
0.000
1.80
-2.84
-1.04

HL
1.8
1.7
1.8
0.06
0.118
1.77
-2.95
-1.15

HP
2.3
3.9
3.1
0.80
2.695
3.10
1.67
3.46
n
I
2.9
2.7
3.1
0.20
0.473
2.90
0.97
2.77

m
2.6
1.6
1.0
0.81
2.695
1.73
-3.07
-1.27

J








•
JE
3.3
3.3
2.9
0.23
0.473
3.17
1.90
3.70
tr
JQ








' •
JK








¦ •1









•
JS
1.7
1.1
1.1
0.35
0.709
1.30
-4.57
-2.77

JX









JY
3.1
3.3
2.8
0.25
0.591
3.07
1.55
3.35
fl-
K
2.8
4.1
3.8
0.68
2.020
3.57
3.28
5.08
it
KH
1.6
1.7
1.8
0.10
0.236
1.70
-3.18
-1.39

KL
4.5
3.7
2.4
1.06
3.821
3.53
3.17
4.97
tt
KT4-








, •
L
2.5
2.5
2.7
0.12
0.236
2.57
-0.i8
1.62

ijv:;








_ •
LH








•
LZ









M








•
MF
3.4
4.0
3.5
0.32
0.709
3.63
3.51
5.31
it
MX
1.3
1.7
1.6
0.21
0.473
1.53
-3.76
-1.96

N
2.9
3.6
2.9
0.40
0.827
3.13
178
3.58
IT
NA









NH









NJ
3.3
4.0
3.7
0.35
0.827
3.67
3.63
5.43

nk'









140j|








•
O
2.4
2.3
2.1
0.15
0.354
2.27
-1.22
0.58

,OBr-









ov-:








^ ^









'' ""
ox
1.9
1.9
1.9
0.00
0.000
1.90
-2.49
-0.69

p
1.9
1.9
1.8
0.06
0.118
1.87
-2.61
-0.81








-
*-*
to









PW
2.9
2.7
3.1
0.20
0.473
2.90
0.97
2.77

¦'pC 1








m
Q
2.0
2.1
2.4
0.21
0.473
2.17
-1.57
0.23










' • -x .









;< . ,
• s No data submitted TAG SYMBOLS ft s Above control limit
0j=lnfiufficient data	x = Determined to be an outlier	II = Below control limit y
-------
if	








	^
18 / 20 ESD-LV Perform an ce Evaluation: Uranium-Radium in Water, 12-«Jun-1998

Radium-228








Lab
Res. 1


Exper.
Rng anal

Normalized deviation

Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
QU
2.8
3.2
2.6
0.31
0.709
2.87
0.86
2.66

QX









QZ
2.3
2.2
1.9
0.21
0.473
2.13
-1.68
0.12

R








•
RD
2.4
3.0
2.3
0.38
0.827
2.57
-0.18
1.62

RG








*
RK
11.6
i3.8
11.6
1.27
4.046
12.33
33.65
35.45

HP








•
RR








•
RX
1.8
1.9
1.7
0.10
0.236
1.80
-2.84
-1.04

RZ
2.5
2.5
2.4
0.06
0.118
2.47
-0.53
1.27

S
2.3
2.0
2.0
0.17
0.354
2.10
-1.80
0.00

SD
5.2
4.5
5-5
0.51
1.345
5.07
8.48
10.28
X
SF








•
SI
2.4
1.9
2.2
0.25
0.591
2.17
-1.57
023

SL








•
SM
4.3
4.3
4.3
0.00
0.000
4.30
5.82
7.62

SO








•
ss
3.0
3.0
2.5
0.29
0.591
2.83
0.74
2.54

sx
6.6
6.8
5^3
0.60
1.795
5.87
11.25
13.05
X
sz
10.1
0.1
13.1
2.52
10.346
10.43
27.07
28.81
X
T








•
TD
3.0
0.4
7.4
3.54
14.846
3.60
3.40
5.20
ft
TN
3.5
2.7
2.5
0.53
1.345
2.90
0.97
2.77

TQ
2.0
2.2
1.9
0.15
0.354
2.03
-2.03
-0.23

TU








•
U
1.8
2.0
1.9
0.10
0.236
1.90
-2.49
-0.69

UM








•
UP
2.6
2.1
2.4
0.25
0.591
2.37
-0.87
0.92

UQ
2.0
2.5
2.3
0.25
0.591
2.27
-1.22
0.58

UR








J
UZ








*
VA
2.8
3.7
3.3
0.45
1.120
3.27
2.24
4.04
'ft
VH
5.3

;£r:
0.67
2.020
5.13
SJl
10.51
X
VI
2.3
3.7
3.5
0.76
2.245
3.17
1.90
3.70
ft
W
3.5
2.7
4.2
0.75
2.470
3.47
2.94
4.73
ft
WC
2.8
3.7
2.9
0.49
1.120
3.13
1.78
3.58
ft
WO








*
WH
2.0
2.1
3.1
0.61
1.570
2.40
-0.76
1.04

WI








•
WJ








•
WO
2.1
2.4
3.1
0.51
1.345
2.53
-0.30
1.50

WR
2.8
3.0
3.4
0.31
0.709
3.07
1.55
3.35
ft
ws








•
WX








•
• =
No data submitted

TAG SYMBOLS

ft = Above control limit
l®-
Insufficient data
x =
Determined to be an outlier
11- = Below control limit
-------
>
ESD-LV Performance Evaluation: Uranium-Radium in Water, 12-Jun-1998 19 / 20
r
Radium-228











\
Lab




Exper.
Rng anal


Normalized deviation

Res. 1 Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg) (known) Tag
X
2.6
2.5

2.5
0.06
0.118
2.53

0.30

1.50

XA













XC












' *
XD













XI
4.4
3.1

2.8
0.85
2.695
3.43

2.82

4.62
ft
XK













XL
2.0
2.3

2.5
0.25
0.591
2.27

1.22

0.58

XM
1.4
1.7

2.4
0.51
1.345
1.83
-2.72

-0.92

xo


























• -
--AJCV-













iks':-






























Data sorted by Laboratory Averaj
f©





Average
Tag

Lab
Average
Tag
Lab
Average

Tag

Lab
1.30


JS

2.40

EL

2.93



EB
1.53


MX

2.40

BH

2.97



DZ
1.70


KH

2.40

HE

3.07

IT

WR
1.73


ID

2.40

DE

3.07

IT

JY
1.77


HL

2.43

BM

3.07

It

AW
1.80


RX

2.47

RZ

3.10

ft

HP
1.80


HK

2.47

C

3.13

ft

WC
1.80


DB

2.47

BO

3.13

It

N
1.83


XM

2.47

AL

3.17

ft

VI
1.87


P

2.47

AF

3.17

ft

JE
1.87


AE

2.53

X

3.23

ft

CE
1.90


U

2.53

WO

3.27

ft

VA
1.90


OX

2.57

RD

3.30

ft

DT
1.93


CJ

2.57

L

3.43

ft

XI
1.97


AZ

2.60

CA

3.47

It

W
2.03


TQ

2.60

AK

3.53

ft

KL
2.03


BK

2.63

AJ

3.57

ft

K
2.10


S

2.67

CS

3.60

ft

TD
2.13


QZ

2.67

BC

3.63

It

MF
2.17


SI

2.70

E

3.67

ft

NJ
2.17


Q

2.70

A

3.80

ft

BA
2.17


EO

2.77

FN

4.30

ft

SM
2.27


XL

2.83

SS

4.43

ft

GN
2.27


UQ

2.87

QU

5.07

X

SD
2.27


O

2.87

GQ

5.13

X

VH
2.37


UP

2.90

TN

5.87

X

SX
2.40


WH

2.90
2.90

PW
I

10.43
12.33

X
X

SZ
RK
• s No data submitted


TAG SYMBOLS


ft
s Above control limit
[0s Insufficient data


x =
Determined to be an outlier


= Below control limit
-------
20 / 20 ESD-LV Performance Evaluation: Uranium-Radium in Water, 12-«Jun-1998
Radium-228
% responding labs	Frequency distribution
=^\
lof
—|	|	|	| ^	M yW
" -HEiEaHMBTl 1 BB Hli ¦.Ha™ Ha	— &
M
-6	-4	-2	0	+2	+4	+6
Normalized deviation of the mean from the known value
% responding labs	Frequency distribution
			 BH JS



¦s m
i
-6
-4 -2 0 +2 +4
Normalized deviation of the mean from the grand average
I
¦
+6
-------
United States
Environmental Protection
Agency
Office of Research and
Development
Washington, DC 20460
EPA 600/R-98/178
December 1998
Strontium in Water
Performance Evaluation
Study
A Statistical Evaluation
of the July 17, 1998 Data
-------
Strontium in Water
Performance Evaluation Study
July 17, 1998
Environmental Protection Agency
National Exposure Research Laboratory
Environmental Sciences Division
Las Vegas, Nevada
-------

UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
OFFICE OF RESEARCH AND DEVELOPMENT
NATIONAL EXPOSURE RESEARCH LABORATORY
ENVIRONMENTAL SCIENCES DIVISION-LAS VEGAS
P.O. BOX 93476
LAS VEGAS, NEVADA 89193-3478
(702/798-2100)
Dear Participant,
Enclosed are the results of the Environmental Sciences Division (ESD-LV)
Performance Evaluation Study for Strontium in Water; July 17, 1998.
The known value for each analysis was determined by gravimetric methods,
checked by chemical analyses performed by ESD-LV's Radiochemistry Laboratory,
and compared to the participating laboratories' grand average.
The expected precision, determined by the known value, was taken from
"Table 3. Laboratory Precision: One Standard Deviation Values and Control Limits
for Various Analyses", which is based on data accumulated over the years by the
Performance Evaluation Program, and can be found in the Environmental Radioactivity
Performance Evaluation Studies Program and Radioactive Standards Distribution
Program information brochure.
Please take a few minutes to review this report and the analytical data your
laboratory submitted to us. If there are any apparent discrepancies, please notify us
immediately.
We encourage you to make use of the computer-automated data-entry system
that has been in place for some time now. As the number of participants increases,
and it becomes unrealistic for us to receive results by mail or FAX, the computer
system will be our only avenue for accepting data.
If you have any questions or comments, please send a message via the data-entry
system or contact Stephen Pia at 702/798-2102 or Patricia Honsa at 702/798-2141.
Sincerely, n
JZfL,
Stephen Pia
Team Leader
RADQA Program
Enclosure
-------
NOTICE
This material has been funded wholly by
the U.S. Environmental Protection Agency.
It has been subjected to the Agency's review,
and has been approved for publication as
an EPA document.
-------
ESD-LV Performance Evaluation: Strontium in Water, 17-Jul-1998
1/12
The following pages consist of separate sections for each of the nuclides in this study with four
parts per section. After the first, each part is separated from the next by a new page or a thick
horizontal bar. The first page of each section is a statistical summary for the nuclide and starts
with a statement of the known value, the control limits, and the warning limits.
The warning limits are placed at two normalized standard deviations above and below the
known value and the control limits are three normalized standard deviations above and below
the known value. If you keep control charts, these values will be useful for anticipating problems
with the accuracy of your analytical methods.
The coin shaped pie chart at the top of the summary page shows the fate of all the samples
sent out in number and percentage terms. The pie chart starts at the top and rotates clockwise.
The first sector represents those participants who submitted analytical results within both the
warning and control limits. The next sector represents those who are in the warning region but
not out of control. The third sector represents those who are out of control, but have passed
the outlier test. The fourth sector represents those who have failed the outlier test. The last
sector represents those participants who have failed to respond properly. This is the case if no
analytical results were returned, or less than three determinations were reported, or if the results
were received too late. The reeding on the edge of the coin is spaced at one percent intervals, and
the sector shading becomes darker as the data reliability decreases. Sectors with zero width are
not shown.
The table in the center shows a number of statistical quantities calculated from the submitted
data based on the mean and median values in relation to the known value, both before and after
outlier removal. The lower pie chart uses the same construction as the upper chart and shows
the distribution of properly submitted data in terms of deviation from the known value divided
into sectors representing one, two, three, and greater than three normalized standard deviations.
The second part is an alphabetical listing, in lab-code order, of submitted data and several
calculated quantities. An entry that is shaded has been rejected because of one of the reasons
listed above or failure of the outlier test. The fifth and sixth columns are a measure of laboratory
precision. The Range analysis is a normalized value that you may use to keep precision control
charts. The eighth and ninth columns are the differences from the mean of all non-outliers and
from the known value, respectively. If this value is between 2.0 and 3.0, your analytical process
precision is in the warning zone; if it exceeds 3.0 it is out of control. A tag symbol may appear in
the last column. Each page with tags has a symbol definition summary at the bottom. If there is
no tag symbol, the data is within the control limits, but it may be in the warning zone.
The third part is a three-column listing of result average, tag symbol, and lab-code in average
order excluding those labs not responding properly. In this order, all outliers and out-of-control
results appear at the top or bottom of the list.
The last part is two bar chart displays showing frequency distributions of responding
participants. The first chart places the known value at the center and a bar at each 0.2 unit of
expected precision. The second chart places the mean of the reported measurements at the center
and a bar at each 0.2 unit of standard deviation. In both cases, a bar includes those results within
0.1 unit up to the maximum of six. Any results more than six units from the center value are
shown cumulatively by a shaded bar one past the sixth unit. If the central tendency of the known
value distribution falls away from the center, an error in accuracy is indicated. If the distribution
is broad, poor precision is indicated. The mean value distribution is similar but uses the average
and standard deviation of reported results as its basis.
-------
2/12	ESD-L-V Performance Evaluation: Strontium in Water, 17-Jul-1998	j|
The Range AnalyaisfR + SR) in calculated from the range, mean range and standard error of
the range values. The range is the difference between the maximum and minimum results for the
laboratory. The mean range is calculated by multiplying the expected precision by 1.693(far three
results). The standard error of the range is calculated by multiplying the mean range by 2.575{for
three results), subtracting the mean range from this product, and dividing the result by 3. If the
range is greater than the mean range, then the range analysis is calculated by subtracting the
mean Tange from the range, dividing the result by the standard error of the range and adding 1,
If the mean range is greater than or equal to the range, then the range analysis is calculated by
dividing the range by the mean range.
The normalized deviation, of the mean from the grand average is calculated from the deviation
of the mean from the grand average and the standard error of the mean values. The deviation of
the mean from the grand average is calculated by subtracting the grand average from the
average of the laboratory's three results. The standard error of the mean is calculated by
dividing the expected precision by the square root of 3{the number of results). The normalized
deviation of the mean from the grand average is calculated by dividing the deviation of the mean
from the grand average by the standard error of the mean.
The normalized deviation of the mean from the known value is calculated from the deviation of
the mean from the known value and the standard error of the mean values. The deviation of the
mean from the known value is calculated by subtracting the known value from the average of the
laboratory's three results. The standard error of the mean is calculated by dividing the expected
precision by the square root of 3{the number of results). The normalized deviation of the mean,
from the known value is calculated by dividing the deviation of the mean from the known value by
the standard error of the mean.
A complete explanation of the statistical calculations involved in the report may be found in
the Environmental Radioactivity Performance Evaluation Studies Program information brochure
[Draft Revision of EPA-6Q0/4-81-004], available from Patricia Honsa, ESD-LV, 702/798-2141.
-------
ESD-LV Performance Evaluation: Strontium in Water, 17- Jul-1998
3/12
Strontium-89
Statistical Summary	103 Participants
The known value of this nuclide is 21.0 pCi/I with an expected precision of 5.0; the control limits
are 12.3 to 29.7; the warning regions are 12.3 to 15.2 and 26.8 to 29.7
34(33.0 %) Failed to respond ;
; 58(56.3 %) Within all limits
2(1.9 %) Out of control
but not an outlier ^
Statistic
I I
Respondents
4(3.9 %) In warning zone
but within control
Non-outliers
Mean
22.31
Grand Avg 20.53
Std. Dev.
19.20
3.50
Variance
368.46
12.25
% Coef. of Var.
86.02
17.05
% deviation of mean from known value
6.26
-2.23
Norm. dev. of mean from known value
0.07
-0.13
Median
20.67
20.67
% deviation of median from known value
-1.59
-1.59
Norm. dev. of median from known value
-0.02
-0.10
9(13.0 %) More than 3 norm. S.D
,43(62.3 %) Within 1 norm. S.D.
I
!	of known value
1 'i, *"v'	'• £ '	+
2(2.9 %) Between 2 and 3 norm. S.D. • ^"~-J—U~ I I I L3-
15(21.7 %) Between 1 and 2 norm. S.D.
-------
if 	
4/12 ESD-LV Performance Evaluation:
Strontium in Water,
17-Jul-1998

	^
Strontium-89







N
Lab
Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (lcnown) Tag
A
21.0
21.0
20.0
0.58
0.118
20.67
0.05
-0.12

AE
21.0
21.0
21.0
0.00
0.000
21.00
0.16
0.00

AF
20.0
19.0
19.0
0.58
0.118
19.33
-0.41
-0.58

AJ
36.0
27.0
26.0
5.51
1.345
29.67
3.16
3.00

AK
15.0
15.0
16.0
0.58
0.118
15.33
-1.80
-1.96

AL
21.0
22.0
21.0
0.58
0.118
21.33
0.28
0.12

AU
29.0
28.0
28.0
0.58
0.118
28.33
2.70
2.54

AW
22.0
22.0
23.0
0.58
0.118
22.33
0.62
0.46

AY








9
AZ
19.0
22.0
21.0
1.53
0.354
20.67
0.05
-0.12

BA
19.0
19.0
20.0
0.58
0118
19.33
-0.41
-0.58

BB








• \
BC
17.0
17.0
17.0
0.00
0.000
17.00
-1.22
-1.39

BG








• ¦
BH
22.0
24.0
20.0
2.00
0.473
22.00
0.51
0.35

BL
21.0
20.0
23.0
1.53
0.354
21.33
0.28
0.12

BM
22.0
23.0
21.0
1.00
0.236
22.00
0.51
0.35

BO
21.0
21.0
20.0
0.58
0.118
20.67
0.05
-0.12

C
22.0
21.0
21.0
0.58
0.118
21.33
0.28
0.12

CA
16.0
19.0
22.0
3.00
0.709
19.00
-0.53
-0.69

CC









CE








•
CJ
20.0
21.0
22.0
1.00
0.236
21.00
0.16
0.00

CO
30.0
22.0
32.0
5.29
1.345
28.00
2.59
2.42

CP
19.0
17.0
20.0
1.53
0.354
18.67
-0.65
-0.81

CS
24.0
26.0
25.0
1.00
0.236
25.00
1.55
1.39

CX
13.0
19.0
20.0
3.79
0.827
17.33
-1.11
-1.27

D
21.0
20.0
16.0
2.65
0.591
19.00
-0.53
-0.69

DD
22.0
25.0
23.0
1.53
0.354
23.33
0.97
0.81

DE
18.0
18.0
18.0
0.00
0.000
18.00
-0.88
-1.04

DO
27.0
24.0
22.0
2.52
0.591
24.33
1.32
1.15

DT
19.0
20.0
15.0
2.65
0.591
18.00
-0.88
-1.04

DZ









E
24.0
21.0
22.0
1.53
0.354
22.33
0.62
0.46

EB
24.0
25.0
26.0
1.00
0.236
25.00
1.55
1.39

EL
20.0
20.0
22.0
1.15
0.236
20.67
0.05
-0.12

FE
28.0
25.0
25.0
1.73
0.354
26.00
1.89
1.73

GQ
7.0
6.0
6.0
0.68
0.118;
6.33
-4.92
-5.08
X
HK
19.0
19.0
21.0
1.15
0.236
19.67
-0.30
-0.46

HP
22.0
18.0
18.0
2.31
0.473
19.33
-0.41
-0.58

I
T
20.0
19.0
20.0
0.58
0.118
19.67
-0.30
-0.46

O
JE
9.0
12.0
10.0
1.53
0.354
10.33
-3.53
-3.70
11
JS
20.0
21.0
19.0
1.00
0.236
20.00
-0.18
-0.35

JY
23.0
23.0
19.0
2.31
0.473
21.67
0.39
0.23

• =
No data submitted

TAG SYMBOLS

ft = Above control limit
[0-
Insufficient data
x s
Determined to be an outlier
J1 = Below control limit
	—	
-------
ESD-LV Performance Evaluation: Strontium in Water, 17-Jul-1998	5/12
v	
Strontium-89








Lab
Res. 1
Res. 2
Res. 3
Exper.
Rng anal

Normalized deviation

Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
K
20.0
24.0
22.0
2.00
0.473
22.00
0.51
0.35

KH
19.0
22.0
21.0
1.53
0.354
20.67
0.05
-0.12

KL
18.0
17.0
18.0
0.58
0.118
17.67
-0.99
-1.15

L
20.0
230
20.0
1.73
0.354
21.00
0.16
0.00

LE









LF
23.0
19.0
23.0
231
0.473
21.67
0.39
0.23

•mT









N
24.0
22.0
22.0
1.15
0.236
22.67
0.74
0.58

NJ
16.0
16.0
17.0
0.58
0.118
16.33
-1.45
-1.62

NO








-' < t ^
OA
171.0
178.0
1740
3.51:
0.827
174.33
63.28
53.12
V;)
PB








-V
Q
20.0
21.0
23.0
1.53
0.354
21.33
0.28
0.12

QM
4.0
. 3.0
2.0
1;00
0.236
3.00
-6M
-6.24

QU
22.0
23.0
23.0
0.58
0.118
22.67
0.74
0.58

QW
20.0
23.0
22.0
1.53
0.354
21.67
0.39
0.23

QZ
19.0
18.0
20.0
1.00
0.236
19.00
-0.53
-0.69

R
17.0
18.0
17.0
0.58
0.118
17.33
-1.11
-1.27

RK









RR








- •; Cl
S
20.0
20.0
20.0
0.00
0.000
20.00
-0.18
-0.35

SD
25.0
20.0
22.0
2.52
0.591
22.33
0.62
0.46

SF








•v.
SI
31.0
34^0
37.0
3.00
0.709 ?
3*00
4.67
4.50
x-l-
SL









SM
17.0
18.0
18.0
0.58
0.118
17.67
-0.99
-1.15

ss
21.0
19.0
19.0
1.15
0.236
19.67
-0.30
-0.46

sz
19.0
23.0
22.0
2.08
0.473
21.33
0.28
0.12

T
21.0
21.0
18.0
1.73
0.354
20.00
-0.18
-0.35

TD









TF








> « ' +$
TL









TQ
15.0
18.0
19.0
2.08
0.473
17.33
-1.11
-1.27

U
18.0
19.0
20.0
1.00
0.236
19.00
-0.53
-0.69

UM









UP
25.0
26.0
26.0
0.58
0118
25.67
1.78
1.62

VA








• •
VC









VH








• ^
VI :








• '
W
19.0
19.0
20.0
0.58
0.118
19.33
-0.41
-0.58

WG








•
WI








•
WJ









WO
13.0
13.0
11.0
1.15
0.236
12.33
-2.84
-3.00

• = No data submitted TAG SYMBOLS IT = Above control limit
0 = Insufficient data	x = Determined to be an outlier	-U- = Below control limit
-------
6/12
ESD-LV Performance Evaluation: Strontium in Water, 17-Jul-1998
Strontium-89
Lab
Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tat
WR







•
WS







•
WV







•
X
18.0
20.0
22.0
2.00
0.473
20.00
-0.18
-0.35
XI
11.0
8.0
13.0
2.52
0.591
10.67
-3.42
-3.58 U
XK
8.0
8.0
8.0
0.00
0.000
8.00
-4.34
-4.50 x
XL
21.0
23.0
24.0
1.53
0.354
22.67
0.74
0.58
XM
22.0
24.0
24.0
1.15
0.236
23.33
0.97
0.81
XO
XQ
XR
XT
Y
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
3.00
X
QM
19.33

BA
21.67

LF
6.33
X
GQ
19.33

AF
21.67

JY
8.00
X
XK
19.67

SS
22.00

K
10.33
u
JE
19.67

I
22.00

BM
10.67

XI
19.67

HK
22.00

BH
12.33

WO
20.00

X
22.33

SD
15.33

AK
20.00

T
22.33

E
16.33

NJ
20.00

S
22.33

AW
17.00

BC
20.00

JS
22.67

XL
17.33

TQ
20.67

KH
22.67

QU
17.33

R
20.67

EL
22.67

N
17.33

CX
20.67

BO
23.33

XM
17.67

SM
20.67

AZ
23.33

DD
17.67

KL
20.67

A
24.33

DO
18.00

DT
21.00

L
25.00

EB
18.00

DE
21.00

CJ
25.00

CS
18.67

CP
21.00

AE
25.67

UP
19.00

U
21.33

SZ
26.00

FE
19.00

QZ
21.33

Q
28.00

CO
19.00

D
21.33

C
28.33

AU
19.00

CA
21.33

BL
29.67

AJ
19.33

W
21.33

AL
34.00
X
SI
19.33

HP
21.67

QW
174.33
X
OA

• = No data submitted
0 s Insufficient data
TAG SYMBOLS
x = Determined to be an outlier
IT s Above control limit
II = Below control limit
-------
	 .
ESD-LV Performance Evaluation: Strontium in Water, 17-Jul-1998	7/12 |
/i
Strontium-89
% responding labs Frequency distribution
10"	
. JIIbIIbb
a,	¥—11	1 n ¥	T	I	I ¦¦ T	1 ¦ I	11
*6	-4	*2	0	+2	+4	+6
Normalized deviation of the mean from the known value
% responding labs	Frequency distribution
10-
o-l—f	f	¦	,	u	,ji	t» ¦iyiBBlJBlBlj ¦!!
¦¦Iflnli.
-6	-4	*2	O	+2	+4	+6
Normalized deviation of the mean from the grand average

-------
ESD-LV Performance Evaluation: Strontium in Water, 17-Jul-1998
8/12
Strontium-90	Statistical Summary	103 Participants
The known value of this nuclide is 7.0 pCi/I with an expected precision of 5.0; the control limits
are 0.0 to 15.7; the warning regions are 0.0 to 1.2 and 12.8 to 15.7
29(28.2 %) Failed to respond •,
. 71 (68.9 %) Within all limits
*	\N
*	N fs.
* \1 X
* \l v
0 \

"** 2(1.9 %) In warning zone
1(1.0 %) Outliers '*
^-CLl |
i
but within control
Statistic
Respondents
Non-outliers
Mean
7.44
Grand Avg 6.82
Std. Dev.
5.66
1.80
Variance
32.00
3.22
% Coef. of Var.
76.02
26.33
% deviation of mean from known value
6.31
-2.61
Norm. dev. of mean from known value
0.08
-0.10
Median
6.67
6.67
% deviation of median from known value
-4.76
-4.76
Norm. dev. of median from known value
-0.06
-0.19
1(1.4 %) More than 3 norm. S.D.
2(2.7 %) Between 2 and 3 norm. S.D. •
. 69(93.2 %) Within 1 norm. S.D.
of known value
rv v;~
I I	2(2.7 %) Between 1 and 2 norm. S.D.
-------
(f-
9/12 ESD-LV Performance Evaluation:
Strontium in Water,
17-Jul-1998

Strontium-90






>
Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
A
7.0
7.0
7.0
0.00
0.000
7.00
0.06
0.00
AE
6.0
6.0
7.0
0.58
0.118
6.33
-0.17
-0.23
AF
7.0
7.0
7.0
0.00
0.000
7.00
0.06
0.00
AJ
3.0
5.0
5.0
1.15
0.236
4.33
-0.86
-0.92
AK
8.0
8.0
7.0
0.58
0.118
7.67
0.29
0.23
AL
6.0
6.0
6.0
0.00
0.000
6.00
-0.28
-0.35
AU
5.0
8.0
7.0
1.53
0.354
6.67
-0.05
-0.12
AW
7.0
8.0
9.0
1.00
0.236
8.00
0.41
0.35
AY
8.0
8.0
8.0
0.00
0.000
8.00
0.41
0.35
AZ
6.0
5.0
6.0
0.58
0.118
5.67
-0.40
-0.46
BA
5.0
6.0
6.0
0.58
0.118
5.67
-0.40
-0.46
BB
6.0
7.0
6.0
0.58
0.118
6.33
-0.17
-0.23
BC
8.0
8.0
7.0
0.58
0.118
7.67
0.29
0.23
BG







•
BH
7.0
6.0
7.0
0.58
0.118
6.67
-0.05
-0.12
BL
8.0
8.0
8.0
0.00
0.000
8.00
0.41
0.35
BM
7.0
7.0
8.0
0.58
0.118
7.33
0.18
0.12
BO
6.0
7.0
7.0
0.58
0.118
6.67
-0.05
-0.12 •
C
7.0
7.0
7.0
0.00
0.000
7.00
0.06
0.00
CA
7.0
7.0
7.0
0.00
0.000
7.00
0.06
0.00
CC







•
CE
7.U
6.0
7.0
0.58
0.118
6.67
-0.05
-0.12
CJ
6.0
6.0
7.0
0.58
0.118
6.33
-0.17
-0.23
CO
10.0
11.0
8.0
1.53
0.354
9.67
0.99
0.92
CP
5.0
4.0
4.0
0.58
0.118
4.33
-0.86
-0.92
CS
6.0
4.0
6.0
1.15
0.236
5.33
-0.51
-0.58
CX
7.0
8.0
10.0
1.53
0.354
8.33
0.53
0.46
D
7.0
7.0
7.0
0.00
0.000
7.00
0.06
0.00
DD
6.0
6.0
6.0
0.00
0.000
6.00
-0.28
-0.35
DE
7.0
7.0
7.0
0.00
0.000
7.00
0.06
0.00
DO
5.0
5.0
7.0
1.15
0.236
5.67
-0.40
-0.46
DT
7.0
7.0
9.0
1.15
0.236
7.67
0.29
0.23
DZ
8.0
9.0
7.0
1.00
0.236
8.00
0.41
0.35
E
8.0
8.0
8.0
0.00
0.000
8.00
0.41
0.35
EB
7.0
6.0
6.0
0.58
0.118
6.33
-0.17
-0.23
EL
10.0
7.0
7.0
1.73
0.354
8.00
0.41
0.35
FE
8.0
7.0
9.0
1.00
0.236
8.00
0.41
0.35
GQ
15.0
14.0
14.0
0.58
0.118
14.33
2.60
2.54
HK
7.0
7.0
6.0
0.58
0.118
6.67
-0.05
-0.12
HP
4.0
4.0
5.0
0.58
0.118
4.33
-0.86
-0.92
I
T
6.0
7.0
7.0
0.58
0.118
6.67
-0.05
-0.12
o
JE
5.0
3.0
4.0
1.00
0.236
4.00
-0.98
•
-1.04
JS
6.0
6.0
7.0
0.58
0.118
6.33
-0.17
-0.23
JY
6.0
6.0
7.0
0.58
0.118
6.33
-0.17
-0.23
• =
No data submitted

TAG SYMBOLS

IT = Above control limit
0 s
Insufficient data
x ==
Determined to be an outlier
li = Below control limit

-------
		 ^
ESD-LV Performance Evaluation: Strontium in Water, 17-JuM998 10/12 |
Strontium-90
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) 1
Tag
K
6.0
5.0
7.0
1.00
0.236
6.00
-0.28
-0.35

KH
7.0
7.0
7.0
0.00
0.000
7.00
0.06
0.00

KL
8.0
8.0
8.0
0.00
0.000
8.00
0.41
0.35

L
7.0
6.0
7.0
0.58
0.118
6.67
-0.05
-0.12

LE









LF
6.0
7.0
7.0
0.58
0.118
6.67
-0.05
-0.12

. M








• -¦
N
6.0
6.0
6.0
0.00
0.000
6.00
-0.28
-0.35

NJ
5.0
5.0
5.0
0.00
0.000
5.00
-0.63
-0.69

N<0









OA
60.0
49;0
60.0
6.08
L570:
5310ft:
1600
15i93
X
PB









Q
11.0
8.0
8.0
1.73
0.354
9.00
0.76
0.69

QM
14.0
14.0
14.0
0.00
0.000
14.00
2.49
2.42

QU
6.0
6.0
7.0
0.58
0.118
6.33
-0.17
-0.23

QW
6.0
6.0
7.0
0.58
0.118
6.33
-0.17
-0.23

QZ
6.0
7.0
6.0
0.58
0.118
6.33
-0.17
-0.23

R
6.0
6.0
6.0
0.00
0.000
6.00
-0.28
-0.35

RK








¦¦ •/-
RR








• -
S
7.0
7.0
7.0
0.00
0.000
7.00
0.06
0.00

SD
80
9.0
8.0
0.58
0.118
8.33
0.53
0.46

sf;:









si
5.0
4.0
4.0
0.58
0.118
4.33
-0.86
-0.92

SL









SM
5.0
6.0
5.0
0.58
0.118
"5.33
-0.51
-0.58

SS
6.0
7.0
6.0
0.58
0.118
6.33
-0.17
-0.23

sz
9.0
8.0
10.0
1.00
0.236
9.00
0.76
0.69

T
6.0
6.0
5.0
0.58
0.118
5.67
-0.40
-0.46

TD









TP








•T« >
TL








*5
TQ
7.0
6.0
7.0
0.58
0.118
6.67
-0.05
-0.12

U
7.0
7.0
7.0
000
0.000
700
0.06
0.00

UM








.• '¦
UP
7.0
7.0
8.0
0.58
0.118
7.33
0.18
012

VA








•V
VC









VH








•
VI









W
7.0
6.0
6.0
0.58
0.118
6.33
-0.17
-0.23

WG








• ;
WI









WJ








•
WO
2.0
2.0
5.0
1.73
0.354
3.00
-1.32
-1.39

• = No data submitted TAG SYMBOLS	IT = Above control limit I
0 = Insufficient data	x s Determined to be an outlier	II s Below control limit ,
^	_	i .					i	'* ¦¦ i-i-ii.	iii	¦	i ¦	i	i ¦ ¦ i - i—	.	-v
-------
ESD-LV Performance Evaluation: Strontium in Water, 17-Jul-1998
		 —
Strontium-90









	N|
Lab
Res. 1 Res. 2


Exper.
Rng anal


Normalized deviation

Res. 3
Sigma
(R + SR)
Average
(grand-avg) (known) Tag
WR
©
©

5.0

°-58
0.118

4.33
-0.86
-0.92

WS









*
WV










•
X
o
CO
o
00

6.0

1.15
0.236

6.67
-0.05
-0.12

XI
11.0 10.0

8.0

1.53
0.354

9.67
0.99
0.92

XK
3.0 4.0

6.0

1.53
0.354

4.33
-0.86
-0.92

XL
©
©

7.0

0.00
0.000

7.00
0.06
0.00

XM
6.0 6.0

6.0

0.00
0.000
6.00
-0.28
-0.35

XO










•
XQ










•
XR










•
XT










•
Y










~


Data sorted by Laboratory Average



Average
Tag
Lab
Average

Tag
Lab
Average
Tag
Lab
3.00

WO

6.33


QW

7.00

C
4.00

JE

6.33


QU

7.00

AF
4.33

XK

6.33


JY

7.00

A
4.33

WR

6.33


JS

7.33

UP
4.33

SI

6.33


EB

7.33

BM
4.33

HP

6.33


CJ

7.67

DT
4.33

CP

6.33


BB

7.67

BC
4.33

AJ

6.33


AE

7.67

AK
5.00

NJ

6.67


X

8.00

KL
5.33

SM

6.67


TQ

8.00

FE
5.33

cs

6.67


LF

8.00

EL
5.67

T

6.67


L

8.00

E
5.67

DO

6.67


I

8.00

DZ
5.67

BA

6.67


HK

8.00

BL
5.67

AZ

6.67


CE

8.00

AY
6.00

XM

6.67


BO

8.00

AW
6.00

R

6.67


BH

8.33

SD
6.00

N

6.67


AU

8.33

CX
6.00

K

7.00


XL

9.00

SZ
6.00

DD

7.00


U

9.00

Q
6.00

AL

7.00


S

9.67

XI
6.33

W

7.00


KH

9.67

CO
6.33

ss

7.00


DE

14.00

QM
6.33

QZ

7.00


D

14.33

GQ




7.00


CA
53.00
X
OA
• = No data submitted


TAG SYMBOLS


IT = Above control limit
0 h Insufficient data
	

x =
Determined to be an outlier

= Below control limit
	
-------
ESD-LV Performance Evaluation: Strontium in Water, 17-Jul-1998
12/12
Strontium-90
responding labs
Frequency distribution
30-
20-
10-
Jill jfllij
i	*	i
-4	-2	0	+2	+4
Normalized deviation of the mean from the known value
-6
-T—
+6
% responding labs
Frequency distribution
20-
10-
—r-
-6
-4	-2	0	+2	+4
Normalized deviation of the mean from the grand average
+6
-------
United States
Environmental Protection
Agency
Office ol Research and
Development
Washington, DC 20460
EPA 600/R-98/179
December 1998
EPA Gross Alpha-Beta in Water
Performance Evaluation
Study
A Statistical Evaluation
of the July 24, 1998 Data
090ECB99 cov-B
-------
Gross Alpha-Beta in Water
Performance Evaluation Study
July 24, 1998
Environmental Protection Agency
National Exposure Research Laboratory
Environmental Sciences Division
Las Vegas, Nevada
-------

UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
OFFICE OF RESEARCH AND DEVELOPMENT
NATIONAL EXPOSURE RESEARCH LABORATORY
ENVIRONMENTAL SCIENCES DIVISION-LAS VEGAS
P.O. BOX 93478
LAS VEGAS, NEVADA 89193-3478
(702/798-2100)
Dear Participant,
Enclosed are the results of the Environmental Sciences Division (ESD-LV)
Performance Evaluation Study for Gross Alpha-Beta In Water; July 24, 1998.
The known value for each analysis was determined by gravimetric methods,
checked by chemical analyses performed by ESD-LV's Radiochemistry Laboratory,
and compared to the participating laboratories' grand average.
The expected precision, determined by the known value, was taken from
'Table 3. Laboratory Precision: One Standard Deviation Values and Control Limits
for Various Analyses", which is based on data accumulated over the years by the
Performance Evaluation Program, and can be found in the Environmental Radioactivity
Performance Evaluation Studies Program and Radioactive Standards Distribution
Program information brochure.
Please take a few minutes to review this report and the analytical data your
laboratory submitted to us. If there are any apparent discrepancies, please notify us
immediately.
We encourage you to make use of the computer-automated data-entry system
that has been in place for some time now. As the number of participants increases,
and it becomes unrealistic for us to receive results by mail or FAX, the computer
system will be our only avenue for accepting data.
If you have any questions or comments, please send a message via the data-entry
system or contact Stephen Pia at 702/798-2102 or Patricia Honsa at 702/798-2141.
Sincerely,
JJfyL
Stephen Pia
Team Leader
RADQA Program
Enclosure
-------
NOTICE
This material has been funded wholly by
the U.S. Environmental Protection Agency.
It has been subjected to the Agency's review,
and has been approved for publication as
an EPA document.
-------
ff= z - —	— ¦ 			 ¦ - ¦	-	= ————
ESD-LV Performance Evaluation: Gross Alpha-Beta in Water, 24-JaH998 1/16
The following pages consist of separate sections for each of the nuclides in this study with four
parte per section. After the first, each part is separated from the next by a new page or a thick
horizontal bar. The first page of each section is a statistical summary for the nuclide and starts
with a statement of the known, value, the control limits, and the warning limits.
The warning limits are placed at two normalized standard deviations above and below the
known value and the control limits are three normalized standard deviations above and below
the known value. If you keep control charts, these values will he useful for anticipating problems
with the accuracy of your analytical methods.
The coin shaped pie chart at the top of the summary page shows the fate of all the samples
sent out in number and percentage terms. The pie chart starts at the top and rotates clockwise.
The first sector represents those participants who submitted analytical results within both the
warning and control limits. The next sector represents those who aire in the warning region but
not out of control. The third sector represents those who are out of control, but have passed
the outlier test. The fourth sector represents those who have failed the outlier test. The last
sector represents those participants who have failed to respond properly. This ia the case if no
analytical results were returned, or less than three determinations were reported, or if the results
were received too late. The reeding on the edge of the coin is spaced at one percent intervals, and
the sector shading becomes darker as the data reliability decreases. Sectors with zero width are
not shown.
The table in the center shows a number of statistical quantities calculated from the submitted
data based on the mean and median values in relation to the known value, both before and after
outlier removal. The lower pie chart uses the same construction as the upper chart and shows
the distribution of properly submitted data in terms of deviation from the known value divided
into sectors representing one, two, three, and greater than three normalized standard deviations.
The second part is an alphabetical listing, in lab-code order, of submitted data and several
calculated quantities. An entry that is shaded has been rejected because of one of the reasons
listed above or failure of the outlier test. The fifth and sixth columns are a measure of laboratory
precision. The Range analysis is a normalized value that you may use to keep precision control
charts. The eighth and ninth columns are the differences from the mean of all non-outliers and
from the known value, respectively. If this value is between 2.0 and 3.0, your analytical process
precision is in the warning zone; if it exceeds 3.0 it is out of control. A tag symbol may appear in
the last column. Each page with tags has a symbol definition summary at the bottom. If there is
no tag symbol, the data is within the control limits, but it may be in the warning zone.
The third part is a three-column listing of result average, tag symbol, and Jab-code in average
order excluding those labB not responding properly. In this order, all outliers and out-of-control
results appear at the top or bottom of the list.
The last part is two bar chart displays showing frequency distributions of responding
participants. The first chart places the known value at the center and a bar at each 0,2 unit of
expected precision. The Becond chart places the mean of the reported measurements at the center
and a bar at each 0.2 unit of standard deviation. In both cases, a bar includes those results within
0.1 unit up to the maximum of six. Any results more than six units from the center value are
shown cumulatively by a shaded bar one past the sixth unit. If the central tendency of the known
value distribution falls away from the center, an error in accuracy is indicated. If the distribution
is broad, poor precision is indicated. The mean value distribution is similar but uses the average
and standard deviation of reported results as its basis.
-------
2/16 ESD-LV Performance Evaluation: Gross Alpha-Beta in Water, 24-Jul-1998
The Range Analy8is(R + SR) is calculated from the range, mean range and standard error of
the range values. The range is the difference between the maximum and minimum results for the
laboratory. The mean range is calculated by multiplying the expected precision by 1.693{for three
results). The standard error of the range is calculated by multiplying the mean range by 2.575(for
three results), subtracting the mean range from this product, and dividing the result by 3. If the
range is greater than the mean range, then the range analysis is calculated by subtracting the
mean range from the range, dividing the result by the standard error of the range and adding 1.
If the mean range ia greater than or equal to the range, then the range analysis is calculated by
dividing the range by the mean range.
The normalized deviation of the mean from the grand average is calculated from the deviation
of the mean from the grand average and the standard error of the mean values. The deviation of
the mean from the grand average is calculated by subtracting the grand average from the
average of the laboratory's three results. The standard error of the mean is calculated by
dividing the expected precision by the square root of 3(the number of results). The normalized
deviation of the mean from the grand average is calculated by dividing the deviation of the mean
from the grand average by the standard error of the mean.
The normalized deviation of the mean from the known value is calculated from the deviation of
the mean from the known value and the standard error of the mean values. The deviation of the
mean from the known value is calculated by subtracting the known value from the average of the
laboratory's three results. The standard error of the mean is calculated by dividing the expected
precision by the square root of 3(the number of results). The normalized deviation of the mean
from the known value is calculated by dividing the deviation of the mean from the known value by
the standard error of the mean.
A complete explanation of the statistical calculations involved in the report may be found in
the Environmental Radioactivity Performance Evaluation Studies Program information brochure
[Draft Revision of EPA-600/4-81-004], available from Patricia Honsa, ESD-LV, 702/798-2141.
-------
ESD-LV Performance Evaluation: Gross Alpha-Beta in Water, 24-Jul-1998 3/16
Gross Alpha	Statistical Summary	186 Participants
The known value of this nuclide is 7.2 pCiA with an expected precision of 5.0; the control limits
are 0,0 to 15.9; the warning regions are 0.0 to 1.4 and 13.0 to 15.9
45(24.2 %) Failed to respond
; 137(73.7 %) Within all Hmlts
*	x K
•	X \
*	NJ \
*	\rv
3( 1.6 %) Outliers '
|
Statistic
i I
Respondents
*"'** 1 (0.5 %) In warning zone
but wltMn control
Non-outliers
Mean
7.67
Grand Avg 7.27
Std. Dev.
3.92
1.98
Variance
15.33
3.94
% Coef. of Var.
51.08
27.31
% deviation of mean from known value
6.47
0.93
Norm. dev. of mean from known value
0.12
0.03
Median
7.10
7.03
% deviation of median from known value
¦1.39
-2.31
Norm. dev. of median from known value
-0.03
-0.08
3(2.1 %) More than 3 norm. S.D. -
1 (0.7 %) Between 2 and 3 norm. S.D. *
. 118(83.7 %) Within 1 norm. S.D.
of known value
» 19(13.5%) Between 1 and 2 norm. S.D.
-------
		 - 				
4/16 ESD-LV Performance Evaluation: Gross Alpha-Beta in Water, 24-Jul-1998
	^
Gross Alpha








Lab
Res. 1
Res. 2
Res. 3
Exper.
Rng anal

Normalized deviation

Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
A
8.0
8.1
7.8
0.15
0.035
7.97
0.24
0.27

AE
10.7
8.7
7.7
1.53
0.354
9.03
0.61
0.64

AF
6.1
8.5
6.9
1.22
0.284
7.17
-0.03
-0.01

AH
8.2
7.9
7.5
0.35
0.083
7.87
0.21
0.23

AJ
8.9
8.4
8.8
0.26
0.059
8.70
0.50
0.52

AK
9.9
9.6
8.9
0.51
0.118
9.47
0.76
0.79

AL
7.1
7.3
6.0
0.70
0.154
6.80
-0.16
-0.14

AP
-







• •
AR
8.3
8.8
8.2
0.32
0.071
8.43
0.40
0.43

AU
8.3
8.1
9.5
0.76
0.165
8.63
0.47
0.50

AW
10.9
10.9
12.8
1.10
0.224
11.53
1.48
1.50

AZ
8.9
9.4
7.7
0.87
0.201
8.67
0.48
0.51

BA
€.8
6.2
6.9
0.38
0.083
6.63
-0.22
-0.20

BB
6.6
6.5
6.2
0.21
0.047
6.43
-0.29
-0.27

BC
7.8
7.9
8.6
0.44
0.095
8.10
0.29
0.31

BG








-V*
BH
7.5
7.1
7.1
0.23
0.047
7.23
-0.01
0.01

BK
7.5
8.4
7.5
0.52
0.106
7.80
0.18
0.21

BL
15.61
163
17.1
0.80
0.189 1
16;30
£3Mj
3.15
X
BM
9.1
8.7
7.3
0.95
0.213
8.37
0.38
0.40

BN
6.6
5.1
5.6
0.76
0.177
5.77
-0.52
-0.50

BO
3.4
3.2
4.0
0.42
0.095
3.53
-1.29
-1.27

BS
9.4
10.4
6.5
2.03
0.461
8.77
0.52
0.54

C
7.5
6.7
7.3
0.42
0.095
7.17
-0.03
-0.01

CA
5.3
5.9
6.1
0.42
0.095
5.77
-0.52
-0.50

CC








2 •,'
CE
5.6
4.8
7.3
1.28
0.295
5.90
-0.47
-0.45

CJ
5.7
5.9
4.7
0.64
0.142
5.43
-0.64
-0.61

CO
3.2
2.4
5.4
1.55
0.354
3.67
-1.25
-1.22

CP
11.9
8.7
11.2
1.68
0.378
10.60
1.15
1.18

cs








s •
cx
46.1
47;*

2:49
0.579
46.60
13.28;
13.30;
Ix
D
9.9
8.1
11.2
1.56
0.366
9.73
0.85
0.88

DB
7.1
7.7
6.6
0.55
0130
7.13
-0.05
-0.02

DD








J ••
DE
8.8
9.5
9.9
0.56
0.130
9.40
0.74
0.76

DH
6.3
6.8
4.3
1.32
0.295
5.80
-0.51
-0.48

DO
10.7
11.2
9.0
1.15
0.260
10.30
1.05
1.07

DR








•
DT
8.9
6.9
7.1
1.10
0.236
7.63
0.13
0.15

DZ
11.6
12.8
10.8
1.01
0.236
11.73
1.55
1.57

E
9.4
9.8
8.3
0.78
0.177
9.17
0.66
0.68

EB
7.0
5.8
6.6
0.61
0.142
6.47
-0.28
-0.25

EL
6.2
4.0
6.1
1.24
0.260
5.43
-0.64
-0.61

EO
7.0
7.0
5.0
1.15
0.236
6.33
-0.32
-0.30

• =
No data submitted

TAG SYMBOLS

ft s Above control limit
1 0 =
^	
Insufficient data
X s
Determined to be an outlier
JJ. s Below control limit
	JJ
-------
rf
ESD-LV Performance Evaluation: Gross Alpha-Beta in Water, 24-Jul-1998 5/16
Gross Alpha
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
EH
6.6
6.9
7.2
0.30
0.071
6.90
-0.13
-0.10

EV
5.2
4.2
3.9
0.68
0154
4.43
-0.98
-0.96

EW








" • - V
EX
4.1
4.8
4.4
0.35
0.083
4.43
-0.98
-0.96

FE
8.2
8.4
10.0
0.99
0.213
8.87
0.55
0.58

FF
5.1
5.3
5.5
0.20
0.047
5.30
-0.68
-0.66

FJ
4.6
5.2
5.5
0.46
0.106
5.10
-0.75
-0.73

FL
7.2
4.3
5.1
1.50
0.343
5.53
-0.60
-0.58

FN
8.0
7.0
9.0
1.00
0.236
8.00
0.25
0.28

GQ
7.6
6.6
6.3
0.68
0.154
6.83
-0.15
-0.13

GZ
7.6
7.4
8.4
0.53
0.118
7.80
0.18
0.21

HE
11.0
12.4
12.4
0.81
0.165
11.93
1.62
1.64

m
9.3
7.6
6.8
1.28
0.295
7.90
0.22
0.24

HK
6.1
6.1
6.1
0.00
0.000
6.10
-0.40
-0.38

HL
4.0
4.9
5.3
0.67
0.154
4.73
-0.88
-0.85

HP
4.8
5.4
6.1
0.65
0.154
5.43
-0.64
-0.61

I
7.6
3.4
4.9
2.13
0.496
5.30
-0.68
-0.66

ID
J
6.0
8.0
4.8
1.62
0.378
6.27
-0.35
-0.32

JE
7.4
6.6
7.4
0.46
0.095
7.13
-0.05
-0.02

JG








• •-£
JM
5.5
5.9
6.0
0.26
0.059
5.80
-0.51
-0.48

JN
5.1
6.1
5.4
0.51
0.118
5.53
-0.60
-0.58

JP
7.2
7.8
8.5
0.65
0.154
7.83
0.20
0.22

JQ
6.0
7.0
5.7
0.68
0.154
6.23
-0.36
-0.33

JS
8.5
7.7
7.7
0.46
0.095
7.97
0.24
0.27

JY
.'kJ
8.6
7.6
11.2
1.86
0.425
9.13
0.65
0.67

' 11^ A-
KE
7.7
9.2
8.3
0.75
0.177
8.40
0.39
0.42

KH
7.9
7.9
7.6
0.17
0.035
7.80
0.18
0.21

KT
8.0
9.5
11.0
1.50
0.354
9.50
0.77
0.80

KX
9.0
9.0
8.5
0.29
0.059
8.83
0.54
0.57

L
4.9
4.8
5.5
0.38
0.083
5.07
-0.76
-0.74

Tin








i*#
LF
6.3
6.5
6.5
0.12
0.024
6.43
-0.29
-0.27

LL









LR
'M—
5.5
5.3
4.6
0.47
0.106
5.13
-0.74
-0.72

XT A'
MF
7.7
7.6
9.0
0.78
0.165
8.10
0.29
031

MT








- »i "
MV








' s
MX
4.6
3.3
4.0
0.65
0.154
3.97
1.14
-1.12

N
5.0
5.4
5.2
0.20
0.047
5.20
-0.72
-0.69

NA
8.6
7.1
8.1
0.76
0.177
7.93
0.23
0.25

NB
4.1
3.3
5.2
0.95
0.224
4.20
-1.06
-1.04

• =
b?-
No data submitted
Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
ft s Above control limit
•li 3 Below control limit
-------
6/16 ESD-LV Performance Evaluation: Gross Alpha-Beta in Water, 24-Jul-1998
V				
Gross Alpha








Lab
Res. 1
Res. 2
Res. 3
Exper.
Rng anal

Normalized deviation

Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
NH
6.0
5.0
5.0
0.58
0.118
5.33
-0.67
-0.65

NJ
6.2
6.5
6.3
0.15
0.035
6.33
-0.32
-0.30

NK








- •
NO








•
NP
6.9
5.8
7.0
0.67
0.142
6.57
-0.24
-0.22

O
9.9
11.5
12.0
1.10
0.248
11.13
1.34
1.36

OA
7.4
6.9
5.1
1.21
0.272
6.47
-0.28
-0.25

OB
9.4
10.4
10.1
0.51
0.118
9.97
0.94
0.96

OF
9.6
8.2
9.2
0.72
0.165
9.00
0.60
0.62

OS
6.0
6.0
6.0
0.00
0.000
6.00
-0.44
-0.42

OT








•
OY









P
5.0
5.8
8.7
1.95
0.437
6.50
-0.27
-0.24

PB








•
PD









PG
0.1
0.3
0.2
0.10
0.024
0.20
-2.45
-2.42

PM
7.4
6.1
6.7
0.65
0.154
6.73
-0.18
-0.16

Q
8.6
6.3
8.6
1.33
0.272
7.83
0.20
0.22

QM
5.3
4.2
5.7
0.78
0.177
5.07
-0.76
-0.74

QP
10.6
10.6
10.4
0.12
0.024
10.53
1.13
1.15

QQ
6.5
8.3
5.2
1.56
0.366
6.67
-0.21
-0.18

QT
5.9
7.4
11.6
2.95
0.673
8.30
0.36
0.38

QU
11.6
10.5
9.3
1.15
0.272
10.47
1.11
1.13

QW
10.3
9.7
10.6
0.46
0.106
10.20
1.02
1.04

ox
9.3
8.8
8.7
0.32
0.071
8.93
0.58
0.60

QZ
5.9
5.7
5.6
0.15
0.035
5.73
-0.53
-0.51

R
5.9
5.6
5.8
0.15
0.035
5.77
-0.52
-0.50

RB
8.6
7.4
8.6
0.69
0.142
8.20
0.32
0.35

RD
6.8
5.3
3.3
1.76
0.413
5.13
-0.74
-0.72

RG
10.3
9.5
9.5
0.46
0.095
9.77
0.87
0.89

RI
7.2
6.2
5.3
0.95
0.224
6.23
-0.36
-0.33

RK
3.4
4.8
3.6
0.76
0.165
3.93
-1.15
-1.13

RR









RZ
6.8
7.2
7.6
0.40
0.095
7.20
-0.02
0.00

S
8.0
9.4
10.7
1.35
0.319
9.37
0.73
0.75

SD
9.2
9.1
8.9
0.15
0.035
9.07
0.62
0.65

SF









SG
13.6
10.3
10.9
1.76
0.390
11.60
1.50
1.52

SI
6.8
6.3
6.7
0.26
0.059
6.60
-0.23
-0.21

SL
7.2
8.0
7.8
0.42
0.095
7.67
0.14
0.16

SM
6.0
5.7
6.8
0.57
0.130
6.17
-0.38
-0.36

SN
7.4
7.7
6.0
0.91
0.201
7.03
-0.08
-0.06

SO
6.4
6.3
5.8
0.32
0.071
6.17
-0.38
-0.36

SR








* s
SS
6.5
7.6
7.3
0.57
0.130
7.13
-0.05
-0.02

• = No data submitted	TAG SYMBOLS	IT = Above control limit
0 = Insufficient data	x = Determined to be an outlier	JJ = Below control limit I
v?"	¦¦¦¦¦¦	,		 -	—	11		1	1	1	1 	^
-------
	"	
ESD-LV Performance Evaluation: Gross Alpha-Beta in Water, 24-Jul-1998 7/16
r				'
Gross Alpha
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known)
Tag
' SU;.
10.5.
21;9
16.0
5.70
1.660
16.13
3.07
3.09
'* .X..:;,
SV
11.7
10.4
10.3
0.78
0.165
10.80
1.22
1.25

SX
8.0
8.7
10.8
1.46
0.331
9.17
0.66
0.68

SZ
4.8
5.8
6.0
0.64
0.142
5.53
-0.60
-0.58

T
6.2
5.2
5.1
0.61
0.130
5.50
-0.61
-0.59

TD
11.5
7.6
10.6
2.04
0.461
9.90
0.91
0.94

TL









TN
12.1
11.1
8.1
2.08
0.473
10.43
1.10
1.12

T0>;








'
TQ
4.7
5.3
5.3
0.35
0.071
5.10
-0.75
-0.73

TW
7.0
5.6
5.7
0.78
0.165
6.10
-0.40
-0.38

TXvu.









TY
5.4
5.8
5.8
0.23
0.047
5.67
-0.55
-0.53

U
7.3
6.9
6.9
0.23
0.047
7.03
-0.08
-0.06

UA









UM








• v;
UP
7.0
6.5
6.8
0.25
0.059
6.77
-0.17
*° 16

uq:









UY









VA
7.0
6.3
7.1
0.44
0.095
6.80
-0.16
-0.14

VC









VH









VI
8.1
7.6
7.4
0.36
0.083
7.70
0.15
0.17

VJ
9.0
9.0
9.5
0.29
0.059
9.17
0.66
0.68

VO
5.4
8.3
5.1
1.77
0.378
6.27
-0.35
-0.32

VT








•4
W
7.7
7.0
6.6
0.56
0.130
7.10
-0.06
-0.03

WE
6.3
5.5
5.2
0.57
0.130
5.67
-0.55
-0.53

WH
8.2
8.9
7.9
0.51
0.118
8.33
0.37
0.39

WJ/









WN
10.6
10.3
11.5
0.62
0.142
10.80
1.22
1.25

WO
5.0
4.2
5.2
0.53
0.118
4.80
-0.85
-0.83

WP









WR
6.2
7.3
11.4
2.74
0.614
8.30
0.36
0.38

WS








>
WW
6.5
6.2
4.7
0.96
0.213
5.80
-0.51
:0.48

wxC









X
5.8
6.2
5.2
0.50
0.118
5.73
-0.53
-0.51

XB








* V
xc









XD









XF
8.0
7.3
7.8
0.36
0.083
7.70
0.15
0.17

XI
7.7
6.3
6.2
0.84
0.177
6.73
-0.18
-0.16

XJ









XK








v
• = No data submitted	TAG SYMBOLS	IT s Above control limit
0 s Insufficient data	x s Determined to be an outlier	It s Below control limit
-------
8/16 ESD-LV Performance Evaluation: Gross Alpha-Beta in Water, 24-Jul-1998
Gross Alpha










•
Lab
Res. 1
Res. 2


Exper.
Rng anal


Normalized deviation

Res. 3
Sigma
(R + SR)
Average
(grand-avg) (known) Tag
XL
5.6
6.2

5.6
0.35
0.071
5.80

0.51
-0.48

XM
6.8
6.8

6.8
0.00
0.000
6.80

0.16
-0.14

XN
12.0
8.9
10.9
1.57
0.366
10.60

1.15
1.18

xo











• •
XQ
5.6
4.0

8.8
2.44
0.567
6.13

0.39
-0.37

XR















Data sorted by Laboratory Averaj
re




Average

Tag
Lab
Average
Tag
Lab
Average

Tag
Lab
0.20


PG

5.80

JM

7.13


-------
	—	
ESD-LV Performance Evaluation: Gross Alpha-Beta in Water, 24-Jul-1998 9/16
Gross Alpha
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
8.93

QX
9.50

KT
10.60

CP
9.00

OF
9.73

D
10.80

WN
9.03

AE
9.77

RG
10.80

sv
9.07

SD
9.90

TD
11.13

o
9.13

JY
9.97

OB
11.53

AW
9.17

VJ
10.20

QW
11.60

SG
9.17

sx
10.30

DO
11.73

DZ
9.17

E
10.43

TN
11.93

HE
9.37

s
10.47

QU
16.13
X
su
9.40

DE
10.53

QP
16.30
X
BL
9.47

AK
10.60

XN
45.60
X
CX
% responding labs	Frequency distribution
104
o
¦jlllljfllliLi
i	>	i	i " i	|	T1* i	i	i *
-6	-4	-2	0	+2	+4	+6
Normalized deviation of the mean from the known value
% responding labs	Frequency distribution
10-

0 i i i i — i T T T . T .	1 i ™
-6	-4	-2	0+2+4	+6
Normalized deviation of the mean from the grand average
• = No data submitted TAG SYMBOLS ft — Above control limit
0 = Insufficient data	x = Determined to be an outlier	— Below control limit
-------
ESD-LV Performance Evaluation: Gross Alpha-Beta in Water, 24-Jul-1998 10 /16
Gross Beta	Statistical Summary	186 Participants
The known value of this nuclide is 12.8 pCi/1 with an expected precision of 5.0; the control limits
are 4.1 to 21.5; the warning regions are 4.1 to 7.0 and 18.6 to 21.5
Statistic	Respondents	Non-outliers
Mean
13.43
Grand Avg 13.23
Std. Dev.
3.93
2.84
Variance
15.44
8.07
% Coef. of Var.
29.26
21.48
% deviation of mean from known value
4.89
3.33
Norm. dev. of mean from known value
0.16
0.15
Median
13.23
13.23
% deviation of median from known value
3.39
3.39
Norm. dev. of median from known value
0.11
0.15
-------
ft
11/16 ESD-LV Performance Evaluation: Gross Alpha-Beta in Water, 24-Jul-1998
V

r
Gross Beta







-
Lab
Res. 1
Res. 2

Exper.
Rag anal

Normalized deviation

Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
A
12.5
12.5
11.5
0.58
0.118
12.17
-0.37
-0.22

AE
12.1
10.5
11.3
0.80
0.189
11.30
-0.67
-0.52

AF
13.2
12.6
11.1
1.08
0.248
12.30
-0.32
-0.17

AH
16.6
16.6
15.9
0.40
0.083
16.37
1.09
1.24

AJ
9.2
10.3
9.0
0.70
0.154
9.50
-1.29
-1.14

AK
14.4
13.9
14.9
0.50
0.118
14.40
0.41
0.55

AL
12.4
12.6
12.0
0.31
0.071
12.33
-0.31
-0.16

AP








f- ^
AR
15.0
16.0
17.4
1.21
0.284
16.13
1.01
1.15

AU
13.0
12.8
12.5
0.25
0.059
12.77
-0.16
-0.01

AW
15.7
16.7
17.1
0.72
0.165
16.50
1.13
1.28

AZ
11.7
9.0
10.6
1.36
0.319
10.43
-0.97
-0.82

BA
12.1
13.0
12.1
0.52
0.106
12.40
-0.29
-0.14

BB
13.1
13.9
13.3
0.42
0.095
13.43
0.07
0.22

BC
8.2
9.5
8.1
0.78
0.165
8.60
-1.60
-1.45

BG








' •
BH
11.3
12.1
12.1
0.46
0.095
11.83
-0.48
-0.33

BK
13.0
13.8
15.5
1.28
0.295
14.10
0.30
0.45

BL
15.5
16.8
15.1
0.89
0.201
15.80
0.89
1.04

BM
12.3
14.5
12.8
1.15
0.260
13.20
-0.01
0.14

BN
5.5
7.1
7.5
1.06
0.236
6.70
-2.26
-2.11

BO
7.8
7.0
6.0
0.90
0.213
6.93
-2.18
-2.03

BS
14.6
14.6
12.2
1.39
0.284
13.80
0.20
0.35

C
13.0
12.6
12.5
0.26
0.059
12.70
-0.18
-0.03

CA
12.2
12.8
12.2
0.35
0.071
12.40
-0.29
-0.14

CC








< •
CE
12.2
11.7
16.3
2.52
0.543
13.40
0.06
0.21

CJ
17.0
14.0
13.0
2.08
0.473
14.67
0.50
0.65

CO
8.2
6.5
8.3
1.01
0.213
7.67
-1.93
¦1.78

CP
40.6
Mi
¦iS&ft?
qm
1975

::&23-
9.38"
X
cs









cx
13.2
11.2
10.5
1.40
0.319
11.63
-0.55
-0.40

D
17.8
17.5
17.7
0.15
0.035
17.67
1.54
1.69

DB
15.7
16.2
16.6
0.45
0.106
16.17
102
1.17

DD








•
DE
13.3
13.6
13.6
0.17
0.035
13.50
0.09
0.24

DH
12.2
14.6
15.7
1.79
0.413
14.17
0.33
0.47

DO
14.0
11.0
13.0
1.53
0.354
12.67
-0.19
-0.05

DR







*

DT
12.3
12.5
13.1
0.42
0.095
12.63
-0.21
-0.06

DZ
17.3
16.9
20.0
1.69
0.366
18.07
1.68
1.82

E
14.1
12.1
13.1
1.00
0.236
13.10
-0.04
0.10

EB
12.4
11.3
12.0
0.56
0.130
11.90
-0.46
-0.31

EL
12.4
12.9
11.9
0.50
0.118
12.40
-0.29
-0.14

EO
18.0
13.0
12.0
3.21
0.709
14.33
0.38
0.53

• =
No data submitted

TAG SYMBOLS

It = Above control limit
S
in
Insufficient data
x =
Determined to be em outlier
J| = Below control limit
	//
-------
ESD-LV Performance Evaluation: Gross Alpha-Beta in Water, 24-Jul-1998 12 / 16
Gross Beta
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
EH,









EV
14.6
13.3
12.7
0.97
0.224
13.53
0.11
0.25

EW
19.3
19.0
19.3
0.17
0.035
19.20
2.07
2.22

EX
13.6
12.9
13.2
0.35
0.083
13.23
0.00
0.15

FE
11.9
11.9
11.2
0.40
0.083
11.67
-0.54
-0.39

FF
12.4
13.4
12.8
0.50
0.118
12.87
-0.12
0.02 _

FJ









FL
15.6
14.2
9.9
2.97
0.673
13.23
0.00
0.15

FN
7.0
8.0
7.0
0.58
0.118
7.33
-2.04
-1.89

GQ
13.6
14.6
11.7
1.47
0.343
13.30
0.03
0.17

GZ
11.8
12.4
12.7
0.46
0.106
12.30
-0.32
-0.17

HE
13.6
15.2
14.9
0.85
0.189
14.57
0.46
0.61

HI
15.7
13.0
13.2
1.50
0.319
13.97
0.26
0.40

HK
10.7
14.4
15.4
2.48
0.555
13.50
0.09
0.24

HL
13.6
12.6
11.9
0.85
0.201
12.70
-0.18
-0.03

HP
9.1
11.4
10.8
1.19
0.272
10.43
-0.97
-0.82

I
15.1
14.8
13.4
0.91
0.201
14.43
0.42
0.57

ID
j
14.1
12.3
10.0
2.06
0.484
12.13
-0.38
-0.23

JE
11.2
13.1
9.3
1.90
0.449
11.20
-0.70
-0.55

JG









JM
14.6
14.3
13.5
0.57
0.130
14.13
0.31
0.46

JN
9.3
9.6
9.8
0.25
0.059
9.57
-1.27
-1.12

JP
13.8
14.7
13.9
0.49
0.106
14.13
0.31
0.46

JQ
8.6
10.7
11.4
1.46
0.331
10.23
-1.04
-0.89

JS
15.2
13.0
13.8
1.11
0.260
14.00
0.27
0.42

JY
17.2
14.3
13.4
1.99
0.449
14.97
0.60
0.75

K:/.;








*»'»s *
i
KE
15.0
14.4
14.1
0.46
0.106
14.50
0.44
0.59

KH
14.9
12.6
13.7
1.15
0.272
13.73
0.18
0.32

KT
6.5
7.0
8.0
0.76
0.177
7.17
-2.10
-1.95

KX
12.2
14.3
14.2
1.18
0.248
13.57
0.12
0.27

L
14.7
12.1
15.0
1.59
0.343
13.93
0.25
0.39

: UE









LF
14.0
14.0
14.0
0.00
0.000
14.00
0.27
0.42










-
LR
16.2
16.5
17.0
0.40
0.095
16.57
1.16
1.30

Mr-









MF
137
15.0
14.5
0.66
0.154
14.40
0.41
0.55

mt"









Mv'









MX
11.3
12.1
11.7
0.40
0.095
11.70
-0.53
-0.38

N
7.6
10.1
8.9
1.25
0.295
8.87
-1.51
-1.36

NA
10.7
12.0
11.0
0.68
0.154
11.23
-0.69
-0.54

NB
17.0
13.6
15.2
1.70
0.402
15.27
0.71
0.85

• s No data submitted
0 s Insufficient data
v-		
x =
TAG SYMBOLS
Determined to be an outlier
ft = Above control limit
11 = Below control limit
	v
-------
'¦ ~			———		
13/16 ESD-LV Performance Evaluation: Gross Alpha-Beta in Water, 24-Jul-1998
	^
Gross Beta







-
Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation

Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
NH
12.0
12.0
12.0
0.00
0.000
12.00
-0.42
-0.28

NJ
13.5
13.5
12.3
0.69
0.142
13.10
-0.04
0.10

NK








•
NO








. •
NP
9.4
8.4
9.0
0.50
0.118
8.93
-1.49
-1.34

O
14.1
14.7
15.2
0.55
0.13Q
14.67
0.50
0.65

OA
29.0
26.0
28.0
1.53
0.354
27;67
5.00
5.15
X
OB
13.0
10.8
15.4
2.30
0.543
13.07
-0.06
0.09

OF
10.6
11.2
11.5
0.46
0.106
11.10
-0.74
-0.59

OS
13.0
13.0
14.0
0.58
0.118
13.33
0.04
0.18

OT
16.3
17;2
15.2
1.00
0.236
16.23
1.04
1.19

OY








«
P
13.0
18.5
17.0
2.84
0.650
16.17
1.02
1.17

PB








9
PD
15.8
14.0
13.7
1.14
0.248
14.50
0.44
0.59

PG
0.7
0.6;
0>
0.06
0.012
0.67
>4.35
-4.20:
X
PM
15.2
14.9
15.4
0.25
0.059
15.17
0.67
0.82

Q
15.8
14.0
16.7
1.37
0.319
15.50
0.79
0.94

QM
7.0
6.8
7.0
0.12
0.024
6.93
-2.18
-2.03

QP
8.0
7.6
8.7
0.56
0.130
8.10
-1.78
-1.63

QQ
14.5
14.0
14.5
0.29
0.059
14.33
0.38
0.53

QT
17.4
30.9
13.2
9.25
3.078
20.50
2.52
2.67

QU
15.1
15.3
16.4
0.70
0.154
15.60
0.82
0.97

QW
16.8
17.3
17.5
0.36
0.083
17.20
1.38
1.52

QX
19.3
20.0
20.5
0.60
0.142
19.93
2.32
2.47

QZ
11.3
12.5
11.8
0.60
0.142
11.87
-0.47
-0.32

R
13.4
14.0
15.4
1.03
0.236
14.27
0.36
0.51

RB
12.0
11.5
12.0
0.29
0.059
11.83
-0.48
-0.33

RD
11.6
17.1
19.4
4.01
0.921
16.03
0.97
1.12

RG
17.9
18.9
18.0
0.55
0.118
18.27
1.75
1.89

RI
12.3
11.5
15.0
1.83
0.413
12.93
-0.10
0.05

RK
12.4
13.7
11.7
101
0.236
12.60
-0.22
-0.07

RR









RZ
13.0
12.9
14.3
0.78
0.165
13.40
0.06
0.21

S
17.6
17.5
17.3
0.15
0.035
17.47
1.47
1.62

SD
10.0
10.0
10.1
0.06
0.012
1003
-Ml
-0.96

SF








• -
SG
17.9
15.6
13.5
2.20
0.520
15.67
0.85
0.99

SI
15.1
11.2
13.8
1.99
0.461
13.37
0.05
0.20

SL
11.9
12.1
11.0
0.59
0.130
11.67
-0.54
-0.39

SM
10.1
9.8
11.0
0.62
0.142
10.30
-1.01
-0.87

SN
14.4
14.0
13.2
0.61
0.142
13.87
0.22
0.37

SO
12.1
12.0
111
0.55
0.118
11.73
-0.52
-0.37

SR









SS
12.2
13.1
12.6
0.45
0.106
12.63
-0.21
-0.06

• =
No data submitted

TAG SYMBOLS

ft = Above control limit
III
IS)
—9
Insufficient data
x =
Determined to be an outlier
Ji = Below control limit
-------
V
ESD-LV Performance Evaluation: Gross Alpha-Beta in Water, 24-Jul-1998 14 /16
Gross Beta
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
N
Normalized deviation
(grand-avg) (known) Tag
SU
26.1
19.9
21.0
3.31
0.732
22.33
3.15
3.30

SV
14.2
13.7
14.1
0.26
0.059
14.00
0.27
0.42

SX
16.2
20.6
14.5
3.15
0.721
17.10
1.34
1.49

sz
11.7
12.2
11.4
0.40
0.095
11.77
-0.51
-0.36

T
13.1
11.5
12.2
0.80
0.189
12.27
-0.33
-0.18

TD
15.0
17.7
16.1
1.36
0.319
16.27
1.05
1.20

-TL-









TN
13.4
13.2
12.0
0.76
0.165
12.87
-0.12
0.02

TO









TQ
12.4
12.9
12.5
0.26
0.059
12.60
-0.22
-0.07

TW
12.3
9.9
10.0
1.36
0.284
10.73
-0.86
-0.72

TX








Wi
TY
12.1
11.7
11.9
0.20
0.047
11.90
-0.46
-0.31

U
12.3
11.8
12.1
0.25
0.059
12.07
-0.40
-0.25

UA









UM








• f >
UP
145
11.2
124
1.67
0.390
12.70
-0.18
-0.03
i
uq£









UY
10.3
11.3
11.1
0.53
0.118
10.90
-0.81
-0.66

VA
9.2
8.7
7.2
1.04
0.236
8.37
-1.68
-1.54

VC;









VH








•
VI
15.6
14.2
14.1
0.84
0.177
14.63
0.49
0.64

VJ
17.5
13.5
11.8
2.93
0.673
14.27
0.36
0.51

VO
14.1
19.4
9.8
4.81
1.255
14.43
0.42
0.57

VT








i v..; ^
W
13.7
13.8
12.2
0.90
0.189
13.23
0.00
0.15

WE
16.1
13.9
15.2
1.11
0.260
15.07
0.64
0.79

WH
176
13.7
14.7
2.03
0.461
15.33
0.73
0.88

WJ









WN
4.5
4.9
5.2
0.35
0.083
4.87
-2.90
-2.75

WO
17.0
11.5
13.0
2.84
0.650
13.83
0.21
0.36

WP








' r&E*,
WR
11.2
11.7
181
3.85
0.815
13.67
0.15
0.30
.
WS









WW
12.6
11.0
10.8
0.99
0.213
11.47
-0.61
-0.46

WX









X
13.0
11.2
13.4
1.17
0.260
12.53
-0.24
-0.09

XB









XC








W,\ • -
XD








-
XF
14.6
13.8
13.3
0.66
0.154
13.90
0.23
0.38

XI
12.0
11.0
12.0
0.58
0118
11.67
-0.54
-0.39

XJ








' • V
XK









• =
0 B
^	
No data submitted
Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
1T = Above control limit
U = Below control limit
-------
15 / 16 ESD-LV Performance Evaluation: Gross Alpha-Beta In Water, 24-Jul-1998
Gross Beta
Lab
Res. 1
Res. 2
XL
XM
XN
xo
XQ
XR
13.7
16.4
12.9
2.8
16.4
11.6
121
10.2
Exper. Rng anal	Normalized deviation
Res. 3 Sigma (R + SR) Average (grand-avg) (known) Tag
13.7
8.9
10.2
53.9
1.56
3.80
1.39
27.62
0.319
0.886
0.319
10.594
14.60
12.30
11.73
22.30
0.48
-0.32
-0.52
3.14
0.62
-0.17
-0.37
3.29 ft
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
0.67
X
PG
11.83

BH
13.30

GQ
4.87

WN
11.87

QZ
13.33

OS
6.70

BN
11.90

TY
13.37

SI
6.93

QM
11.90

EB
13.40

RZ
6.93

BO
12.00

NH
13.40

CE
7.17

KT
12.07

U
13.43

BB
7.33

FN
12.13

ID
13.50

HK
7.67

CO
12.17

A
13.50

DE
8.10

QP
12.27

T
13.53

EV
8.37

VA
12.30

XM
13.57

KX
8.60

BC
12.30

GZ
13.67

WR
8.87

N
12.30

AF
13.73

KH
8.93

NP
12.33

AL
13.80

BS
9.50

AJ
12.40

EL
13.83

WO
9.57

JN
12.40

CA
13.87

SN
10.03

SD
12.40

BA
13.90

XF
10.23

JQ
12.53

X
13.93

L
10.30

SM
12.60

TQ
13.97

HI
10.43

HP
12.60

RK
14.00

SV
10.43

AZ
12.63

SS
14.00

LF
10.73

TW
12.63

DT
14.00

JS
10.90

UY
12.67

DO
14.10

BK
11.10

OF
12.70

UP
14.13

JP
11.20

JE
12.70

HL
14.13

JM
11.23

NA
12.70

C
14.17

DH
11.30

AE
12.77

AU
14.27

VJ
11.47

WW
12.87

TN
14.27

R
11.63

CX
12.87

FF
14.33

QQ
11.67

XI
12.93

RI
14.33

EO
11.67

SL
13.07

OB
14.40

MF
11.67

FE
13.10

NJ
14.40

AK
11.70

MX
13.10

E
14.43

VO
11.73

XN
13.20

BM
14.43

I
11.73

SO
13.23

W
14.50

PD
11.77

sz
13.23

FL
14.50

KE
11.83

RB
13.23

EX
14.57

HE
• = No data submitted
0 s Insufficient data

TAG SYMBOLS
x = Determined to be an outlier

s Above control limit
ee Below control limit
-------
ESD-LV Performance Evaluation: Gross Alpha-Beta in Water, 24-Jul-1998 16 116
Gross Beta
Data sorted by Laboratory Average
Average Tag
Lab
Average
Tag Lab
Average
Tag
Lab
14.60
XL
15.67
SG
17.20

QW
14.63
VI
15.80
BL
17.47

S
14.67
O
16.03
RD
17.67

D
14.67
CJ
16.13
AR
18.07

DZ
14.97
JY
16.17
P
18.27

RG
15.07
WE
16.17
DB
19.20

EW
15.17
PM
16.23
OT
19.93

QX
15.27
NB
16.27
TD
20.50

QT
15.33
WH
16.37
AH
22.30
It
XQ
15.50
Q
16.50
AW
22.33
It
su
15.60
QU
16.57
LR
27.67
X
OA


17.10
SX
39.87
X
CP
% responding labs
Frequency distribution
10-
% responding labs
-4	-2	0+2+4
Normalized deviation of the mean from the known value
Frequency distribution
10-•
0—r
-6

mill-,.--
0	+2
-4	-2	0+2+4
Normalized deviation of the mean from the grand average
+6
• = No data submitted	TAG SYMBOLS	IT = Above control limit
0 = Insufficient data	x s Determined to be an outlier	= Below control limitl
-------
United States
Enviro-rr.ental Protection
Agency
Office of Research and
Development
Washington, DC 20460
EPA 600/R-98/177
December 1999
Tritium in Water
Performance Evaluation
Study
A Statistical Evaluation
of the August 1, 1998 Data
090ECB99 cov-C
-------
Tritium in Water
Performance Evaluation Study
August 7, 1998
Environmental Protection Agency
National Exposure Research Laboratory
Environmental Sciences Division
Las Vegas, Nevada
-------

UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
OFFICE OF RESEARCH AND DEVELOPMENT
NATIONAL EXPOSURE RESEARCH LABORATORY
ENVIRONMENTAL SCIENCES DIVISION-LAS VEGAS
P.O. BOX 93478
LAS VEGAS, NEVADA 89193-3478
(702/798-2100)

Dear Participant,
Enclosed are the results of the Environmental Sciences Division (ESD-LV)
Performance Evaluation Study for Tritium in Water; August 7, 1998.
The known value for each analysis was determined by gravimetric methods,
checked by chemical analyses performed by ESD-LV's Radiochemistry Laboratory,
and compared to the participating laboratories' grand average.
The expected precision, determined by the known value, was taken from
'Table 3. Laboratory Precision: One Standard Deviation Values and Control Limits
for Various Analyses", which is based on data accumulated over the years by the
Performance Evaluation Program, and can be found in the Environmental Radioactivity
Performance Evaluation Studies Program and Radioactive Standards Distribution
Program information brochure.
Please take a few minutes to review this report and the analytical data your
laboratory submitted to us. If there are any apparent discrepancies, please notify us
immediately.
We encourage you to make use of the computer-automated data-entry system
that has been in place for some time now. As the number of participants increases,
and it becomes unrealistic for us to receive results by mail or FAX, the computer
system will be our only avenue for accepting data.
If you have any questions or comments, please send a message via the data-entry
system or contact Stephen Pia at 702/798-2102 or Patricia Honsa at 702/798-2141.
Stephen Pia
Team Leader
RADQA Program
Enclosure
-------
NOTICE
This material has been funded wholly by
the U.S. Environmental Protection Agency.
It has been subjected to the Agency's review,
and has been approved for publication as
an EPA document.
-------
ESD-LV Performance Evaluation: Tritium in Water, 7-Aug-1998	1/9
The following pages consist of separate sections for each of the nuclides in this study with four
parts per section. After the first, each part is separated from the next by a new page or a thick
horizontal bar. The first page of each section is a statistical summary for the nuclide and starts
with a statement of the known value, the control limits, and the warning limits.
The warning limits are placed at two normalized standard deviations above and below the
known value and the control limits are three normalized standard deviations above and below
the known value. If you keep control charts, these values will be useful for anticipating problems
with the accuracy of your analytical methods.
The coin shaped pie chart at the top of the summary page shows the fate of all the samples
sent out in number and percentage terms. The pie chart starts at the top and rotates clockwise.
The first sector represents those participants who submitted analytical results within both the
warning and control limits. The next sector represents those who are in the warning region but
not out of control. The third sector represents those who are out of control, but have passed
the outlier test. The fourth sector represents those who have failed the outlier test. The last
sector represents those participants who have failed to respond properly. This is the case if no
analytical results were returned, or less than three determinations were reported, or if the results
were received too late. The reeding on the edge of the coin is spaced at one percent intervals, and
the sector shading becomes darker as the data reliability decreases. Sectors with zero width are
not shown.
The table in the center shows a number of statistical quantities calculated from the submitted
data based on the mean and median values in relation to the known value, both before and after
outlier removal. The lower pie chart uses the same construction as the upper chart and shows
the distribution of properly submitted data in terms of deviation from the known value divided
into sectors representing one, two, three, and greater them three normalized standard deviations.
The second part is an alphabetical listing, in lab-code order, of submitted data and several
calculated quantities. An entry that is shaded has been rejected because of one of the reasons
listed above or failure of the outlier test. The fifth and sixth columns are a measure of laboratory
precision. The Range analysis is a normalized value that you may use to keep precision control
charts. The eighth and ninth columns are the differences from the mean of all non-outliers and
from the known value, respectively. If this value is between 2.0 and 3.0, your analytical process
precision is in the warning zone; if it exceeds 3.0 it is out of control. A tag symbol may appear in
the last column. Each page with tags has a symbol definition summary at the bottom. If there is
no tag symbol, the data is within the control limits, but it may be in the warning zone.
The third part is a three-column listing of result average, tag symbol, and lab-code in average
order excluding those labs not responding properly. In this order, all outliers and out-of-control
results appear at the top or bottom of the list.
The last part is two bar chart displays showing frequency distributions of responding
participants. The first chart places the known value at the center and a bar at each 0.2 unit of
expected precision. The second chart places the mean of the reported measurements at the center
and a bar at each 0.2 unit of standard deviation. In both cases, a bar includes those results within
0.1 unit up to the maximum of six. Any results more than six units from the center value are
shown cumulatively by a shaded bar one past the sixth unit. If the central tendency of the known
value distribution falls away from the center, an error in accuracy is indicated. If the distribution
is broad, poor precision is indicated. The mean value distribution is similar but uses the average
and standard deviation of reported results as its basis.
-------
* ^
2/9	ESD-LV Performance Evaluation: Tritium in Water, 7-Aug-1998
The Range Analysis(R + SR) is calculated from the range, mean range and standard error of
the range values. The range is the difference between the maximum and minimum results for the
laboratory. The mean range is calculated by multiplying the expected precision by 1.693(for three
results). The standard error of the range is calculated by multiplying the mean range by 2.575(for
three results), subtracting the mean range from this product, and dividing the result by 3. If the
range is greater than the mean range, then the range analysis is calculated by subtracting the
mean range from the range, dividing the result by the standard error of the range and adding 1.
If the mean range is greater than or equal to the range, then the range analysis is calculated by
dividing the range by the mean range.
The normalized deviation of the mean from the grand average is calculated from the deviation
of the mean from the grand average and the standard error of the mean values. The deviation of
the mean from the grand average is calculated by subtracting the grand average from the
average of the laboratory's three results. The standard error of the mean is calculated by
dividing the expected precision by the square root of 3(the number of results). The normalized
deviation of the mean from the grand average is calculated by dividing the deviation of the mean
from the grand average by the standard error of the mean.
The normalized deviation of the mean from the known value is calculated from the deviation of
the mean from the known value and the standard error of the mean values. The deviation of the
mean from the known value is calculated by subtracting the known value from the average of the
laboratory's three results. The standard error of the mean is calculated by dividing the expected
precision by the square root of 3(the number of results). The normalized deviation of the mean
from the known value is calculated by dividing the deviation of the mean from the known value by
the standard error of the mean.
A complete explanation of the statistical calculations involved in the report may be found in
the Environmental Radioactivity Performance Evaluation Studies Program information brochure
[Draft Revision of EPA-600/4-81-004], available from Patricia Honsa, ESD-LV, 702/798-2141.
-------
ESD-LV Performance Evaluation: Tritium in Water, 7-Aug-1998
3/9
Tritium	Statistical Summary	179 Participants
The known value of this nuclide is 17996 pCi/1 with an expected precision of 1800.0; the control limits
are 14873.1 to 21118.9; the warning regions are 14873.1 to 15912.3 and 20079.7 to 21118.9
50(27.9 %) Failed to respond ,
6(3.4 %) Outliers '
1 (0.6 %) Out of control •'
but not an outlier
Statistic
.111 (62.0 %) Within all limits
Respondents
"*11 (6.1 %) In warning zone
but within control
Non-outliers
Mean
17513.72
Grand Avg 17874.29
Std. Dev.
2979.77
1189.17
Variance
8879039.55
1414119.30
% Coef. of Var.
17.01
6.65
% deviation of mean from known value
-2.68
-0.68
Norm. dev. of mean from known value
-0.16
-0.10
Median
17800.33
17833.33
% deviation of median from known value
-1.09
-0.90
Norm. dev. of median from known value
-0.07
-0.14
7(5.4 %) More than 3 norm. S.D. •
11 (8.5 %) Between 2 and 3 norm. S.D.
.84(65.1 %) Within 1 norm. S.D.
of known value
% 27(20.9 %) Between 1 and 2 norm. S.D.
-------
ft
4/9

ESD-LV Performance Evaluation: Tritium in Water,
7-Aug-1998


'IVitinm








Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation

Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
A
17810.0
17920.0
17960.0
77.66
0.049
17896.67
0.02
-0.10

AE
17830.0
17574.0
17467.0
186.57
0.119
17623.67
-0.24
-0.36

AF
18174.0
18405.0
18095.0
161.09
0.102
18224.67
0.34
0.22

AH
17100.0
17700.0
17700.0
346.42
0.197
17500.00
-0.36
-0.48

AI
18600.0
18960.0
19000.0
220.30
0.131
18853.33
0.94
0.82

AJ
17489.0
17261.0
17166.0
165.98
0.106
17305.33
-0.55
-0.66

AK
15680.0
15001.0
15333.0
339.52
0.223
15338.00
-2.44
-2.56

AP








•
AU
16600.0
16800.0
16800.0
115.47
0.066
16733.33
-1.10
-1.22

AW
18297.0
18016.0
18106.0
143.46
0.092
18139.67
0.26
0.14

AY
17895.0
17959.0
18512.0
339.28
0.202
18122.00
0.24
0.12

AZ








•
BA
18121.0
19190.0
19053.0
581.67
0.351
18788.00
0.88
0.76

BB
17.0
18.0
19.0
1.00
0,001
18.00
-17.18
-17.30
X
BC
16573.0
16513.0
16874.0
193.47
0.118
16653.33
-1.17
-1.29

BG








•
BL
17889.0
18018.0
17792.0
113.37
0.074
17899.67
0.02
-0.09

BM
17650.0
17340.0
17600.0
166.40
0.102
17530.00
-0.33
-0.45

BO
17100.0
17100.0
17500.0
230.96
0.131
17233.33
-0.62
-0.73

C
20183.0
19534.0
19318.0
450.17
0.284
19678.33
1.74
1.62

CA
17699.0
17761.0
17736.0
31.11
0.020
17732.00
-0.14
-0.25

CC
14322.0
11626.0
13007.0
1348.13
0.885
12985.00
-4.70
-4.82
X
CE
17110.0
18000.0
16830.0
610.94
0.384
17313.33
-0.54
-0.66

CJ
16000.0
16000.0
16000.0
0.00
0.000
16000.00
-1.80
-1.92

CO
17100.0
16700.0
17100.0
230.96
0.131
16966.67
-0.87
-0.99

CP
16755.0
16353.0
16554.0
200.98
0.132
16554.00
-1.27
-1.39

CS
18778.0
18873.0
18993.0
107.77
0.071
18881.33
0.97
0.85

CX
18400.0
18800.0
18100.0
351.18
0.230
18433.33
0.54
0.42

D
17311.0
17497.0
17262.0
124.00
0.077
17356.67
-0.50
-0.62

DD








•
DE
17916.0
17936.0
17956.0
20.40
0.013
17936.00
0.06
-0.06

DH
TYT
18075.0
17944.0
17583.0
254.81
0.161
17867.33
-0.01
-0.12

ill
DR








~
•
DT
18100.0
17700.0
18300.0
305.52
0.197
18033.33
0.15
0.04

DY








•
E
17370.0
17429.0
17251.0
90.74
0.058
17350.00
-0.50
-0.62

EA









EB
18062.0
17953.0
17236.0
448.74
0.271
17750.33
-0.12
-0.24

EH
16300.0
16500.0
16900.0
305.52
0.197
16566.67
-1.26
-1.38

EL
17660.0
17550.0
17450.0
105.06
0.069
17553.33
-0.31
-0.43

EW
18600.0
19000.0
18790.0
200.12
0.131
18796.67
0.89
0.77

EX
18758.0
18690.0
18753.0
38.05
0.022
18733.67
0.83
0.71

FE
18290.0
18080.0
18230.0
108.22
0.069
18200.00
0.31
0.20

FJ
19800.0
20600.0
20600.0
461.91
0.263
20333.33
2.37
2.25

• =
No data submitted

TAG SYMBOLS

11 s Above control limit
0 s
V	
Insufficient data
x =
Determined to be ail outlier
•11 = Below control limit
	V
-------
ESD-LV Performance Evaluation: Tritium in Water, 7-Aug-1998	5/9
Tritium
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
>
Normalized deviation
(grand-avg) (known) Tag
FL
178?8.0
17937.0
17725.0
106.12
0.070
17833.33
-0.04
-0.16

GO








v:
GQ








' •v*.
m
18088.0
17998.0
17775.0
161.18
0.103
17953.67
0.08
-0.04

HK
17657.0
17604.0
17222.0
237.36
0.143
17494.33
-0.37
-0.48

HP









HR
19510.0
19248.0
19453.0
137.83
0.086
19403.67
1.47
1.35

I
16807.0
16963.0
16968.0
91.56
0.053
16912.67
-0.93
-1.04

IA








•r
IU









J








• 3 .
JE
15911.0
16950.0
15792.0
637.00
0.380
16217.67
-1.59
-1.71

JK
15570.0
14194.0
16393.0
1111.02
0.722
15385.67
-2.39
-2.51

JM
18389.0
17807.0
18301.0
313.74
0.191
18165.67
0.28
0.16

JN
20089.0
20093.0
19931.0
92.35
0.053
20037.67
2.08
1.96

JP
17410.0
18095.0
17896.0
352.40
0.225
17800.33
-0.07
-0.19

JR









JS
19723.0
19073.0
19622.0
349.76
0.213
19472.67
1.54
1.42

JY
17200.0
17500.0
17900.0
351.21
0.230
17533.33
-0.33
-0.45

K
17400.0
17613.0
17369.0
132.78
0.080
17460.67
-0.40
-0.52

KH
18000.0
18400.0
18200.0
200.00
0.131
18200.00
0.31
0.20

KM
18919.0
18695.0
18992.0
154.81
0.097
18868.67
0.96
0.84

EX
5710.0
5730;0
6720.0
10.00
0.007
5720!0d
-11.76
-11.81
' X -
L
17686.0
17622.0
17811.0
96.17
0.062
17706.33
-°16
-0.28

LE









LF
19000.0
19000.0
19000.0
5.66
0.000
19000.00
1.08
0.97

LR
14917.0
17123.0
16270.0
1112.41
0.724
16103.33
-1.70
-1.82

M
16828.0
16416.0
16702.0
211.09
0.135
16648.67
-1.18
-1.30

MN
18000.0
18600.0
18800.0
416.33
0.263
18466.67
0.57
0.45

MT
17602.0
17607.0
17597.0
5.10
0.003
17602.00
-0.26
-0.38

MV
17746.0
17259.0
18075.0
410.53
0.268
17693.33
-0.17
-0.29

N
18144.0
18283.0
18307.0
88.00
0.053
18244.67
0.36
0.24

NB
20037.0
20080.0
20000.0
39.88
0.026
20039.00
2.08
1.97

NH
17863.0
18067.0
18044.0
111.78
0.067
17991.33
0.11
0.00

NJ
15835.0
15432.0
15700.0
205.15
0132
15655.67
-2.13
-2.25

NK









NO








9.'"
NP
18326.0
18380.0
17991.0
210.77
0.128
18232.33
0.34
0.23

O
18022.0
17534.0
17793.0
244.18
0.160
17783.00
-0.09
-0.20

OA
17800.0
17300.0
17700.0
264.61
0.164
17600.00
-0.26
-0.38

OK









OM
19600.0
18000.0
19000.0
808.29
0.525
18866.67
0.95
0.84

OT
18400.0
17600.0
19000.0
702.38
0.459
18333.33
0.44
0.32

OX
17695.0
17584.0
17724.0
73.84
0.046
17667.67
-0.20
-0.32

PB
17955.0
17597.0
17877.0
188.24
0.117
17809.67
-0.06
-0.18

• = No data submitted TAG SYMBOLS ft = Above control limit
0 = Insufficient data	x = Determined to be an outlier	U = Below control limit y
-------
6/9

ESD-LV Performance Evaluation: Tritium in Water,
7-Aug-1998

	^
Tritium








Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation

Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
PD
18966.0
19088.0
19232.0
133.20
0.087
19095.33
1.17
1.06

PE








•
PM
18540.0
18169.0
18420.0
189.29
0.122
18376.33
0.48
0.37

Q
18751.0
18556.0
18784.0
123.18
0.075
18697.00
0.79
0.67

QC
17900.0
17600.0
17500.0
208.21
0.131
17666.67
-0.20
-0.32

QD
18292.0
17827.0
17959.0
239.62
0.153
18026.00
0.15
0.03

Qi
16468.0
17086.0
17022.0
339.82
0.203
16858.67
-0.98
-1.09

QM
15721.0
16581.0
16765.0
557.29
0.343
16355.67
-1.46
-1.58

QP
20337.0
20808.0
21021.0
350.03
0.224
20722.00
2.74
2.62

QQ
21261.0
20063.0
18827.0
1217.06
0.799
20050.33
2.09
1.98

QT
20761.0
20387.0
20493.0
192.80
0.123
20547.00
2.57
2.45

QU
18512.0
17513.0
18666.0
625.99
0.378
18230.33
0.34
0.23

QW
18066.0
17592.0
17256.0
406.95
0.266
17638.00
-0.23
-0.34

ox
12001.0
12478.0
12445.0
266.37
0.157
12308.00
-5.36
-5.47
X
QZ
17380.0
17810.0
17230.0
301.03
0.190
17473.33
-0.39
-0.50

R
17345.0
17417.0
17326.0
47.89
0.030
17362.67
-0.49
-0.61

RB
17300.0
17400.0
17800.0
264.56
0.164
17500.00
-0.36
-0.48

RK
1.0
1.0
1.0
0.00
0.000
1.00
-17.20
-17.32
X
RO
18370.0
18361.0
17105.0
727.76
0.415
17945.33
0.07
-0.05

RR








•
RU








~
RX








•
S
17758.0
17679.0
17613.0
72.55
0.048
17683.33
-0.18
-0.30

SD
20700.0
20900.0
20100.0
416.30
0.263
20566.67
2.59
2.47

SF








•
SI
17900.0
17700.0
17900.0
115.50
0.066
17833.33
-0.04
-0.16

SM
15900.0
16900.0
16580.0
510.69
0.328
16460.00
-1.36
-1.48

SN
18000.0
17000.0
17000.0
577.35
0.328
17333.33
-0.52
-0.64

ss
17900.0
17600.0
18000.0
208.15
0.131
17833.33
-0.04
-0.16

su
15933.0
15840.0
16036.0
97.98
0.064
15936.33
-1.86
-1.98

sv








„ •
sz
17600.0
18400.0
18500.0
493.28
0.295
18166.67
0.28
0.16

T
16854.0
16483.0
16593.0
190.53
0.122
16643.33
-1.18
-1.30

TA








•
TC
17227.0
17342.0
17582.0
181.13
0.116
17383.67
-0.47
-0.59

TD








•
TF








•
TL








•
TN
19151.0
19381.0
18941.0
220.11
0.144
19157.67
1.23
1.12

TQ








•
TU
28800.0
29900.0
30400.0
818.57
0.525
29700,00
11:38
ii:26
X
TX








•
U
18700.0
18100.0
18600.0
321.48
0.197
18466.67
0.57
0.45

UC








•
UI








•
• =
No data submitted

TAG SYMBOLS

IT 3 Above control limit
in
8
—t)
Insufficient data
X =
Determined to be an outlier
J] = Below control limit
¦¦—-y
-------
^==========^=============^===^======
ESD-LV Performance Evaluation: Tritium in Water, 7-Aug-1998	7/9
Tritium
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
UK








' • V
UM









UP
17686.0
17967.0
18581.0
457.71
0.294
18078.00
0.20
0.08

UT









UX
18100.0
18257.0
18129.0
83.49
0.052
18162.00
0.28
0.16

UY









VA
zi4aa.o
aimy.o
19043.0
1195.05
0.784
20231.67
2.27
2.15

VC
17400.0
17600.0
17500.0
99.96
0.066
17500.00
-0.36
-0.48

VE








-
VI
14900.0
14300.0
14700.0
305.52
0.197
14633.33
-3.12
-3.24
u
VM
18401.0
17780.0
18078.0
310.57
0.204
18086.33
0.20
009

VN








V,-
VP
17800.0
18300.0
18800.0
499.99
0.328
18300.00
0.41
0.29

VR
17082.0
19027.0
19178.0
1168.98
0.688
18429.00
0.53
0.42

VW
16536.0
15864.0
16031.0
349.88
0.221
16143.67
-1.67
-1.78

vz







r
" • "*
w
18280.0
17670.0
17950.0
305.36
0.200
17966.67
0.09
-0.03

WD
17435.0
17262.0
17537.0
138.97
0.090
17411.33
-0.45
-0.56

WH
20478.0
21019.0
20789.0
271.55
0.178
20762.00
2.78
2.66

WJ








•
WO
14700.0
15200.0
15500.0
404.16
0.263
15133.33
-2.64
-2.75

WP
20386.0
20572.0
20554.0
102.61
0.061
20504.00
2.53
2.41

WR
18340.0
18594.0
19015.0
340.92
0.222
18649.67
0.75
0.63

ws
17890.0
18750.0
17640.0
582.26
0.364
18093.33
0.21
0.09

WT








• '
WV
17600.0
17400.0
17400.0
115.47
0.066
17466.67
-0.39
-0.51

WW
19835.0
19592.0
19914.0
167.73
0.106
19780.33
1.83
1.72

WX









wz
16972.0
17322.0
17428.0
238.63
0.150
17240.67
-0.61
-0.73

X
17900.0
18200.0
17700.0
251.69
0.164
17933.33
0.06
-0.06

XB
16700.0
18000.0
16500.0
814.46
0.492
17066.67
-0.78
-0.89

XC
171140
17157.0
17165.0
27.66
0.017
17145.33
-0.70
-0.82

XD








•
XE








#•
XF
17770.0
17330.0
18170.0
420.15
0.276
17756.67
-0.11
-0.23

XG
18770.0
18730.0
19100.0
203.07
0.121
18866.67
0.95
0.84

XH
13502.0
17414.0
17696.0
2344.25
1.717
16204.00
-1.61
-1.72

XI
17000.0
16000.0
16500.0
499.99
0.328
16500.00
-1.32
-1.44

XK








. •
XM
15848.0
16449.0
16972.0
562.44
0.369
16423.00
-1.40
-1.51

XO








. •
XQ








« :
XR








- y
Y








- •
in. "I
• 
-------
8/9
ESD-LV Performance Evaluation: Tritium in Water, 7-Aug-1998
Tritium
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
1.00
X
RK
17473.33

QZ
18165.67

JM
18.00
X
BB
17494.33

HK
18166.67

SZ
5720.00
X
KX
17500.00

VC
18200.00

KH
12308.00
X
QX
17500.00

RB
18200.00

FE
12985.00
X
CC
17500.00

AH
18224.67

AF
14633.33

VI
17530.00

BM
18230.33

QU
15133.33

WO
17533.33

JY
18232.33

NP
15338.00

AK
17553.33

EL
18244.67

N
15385.67

JK
17600.00

OA
18300.00

VP
15655.67

NJ
17602.00

MT
18333.33

OT
15936.33

SU
17623.67

AE
18376.33

PM
16000.00

CJ
17638.00

QW
18429.00

VR
16103.33

LR
17666.67

QC
18433.33

CX
16143.67

VW
17667.67

OX
18466.67

U
16204.00

XH
17683.33

S
18466.67

MN
16217.67

JE
17693.33

MV
18649.67

WR
16355.67

QM
17706.33

L
18697.00

Q
16423.00

XM
17732.00

CA
18733.67

EX
16460.00

SM
17750.33

EB
18788.00

BA
16500.00

XI
17756.67

XF
18796.67

EW
16554.00

CP
17783.00

O
18853.33

AI
16566.67

EH
17800.33

JP
18866.67

XG
16643.33

T
17809.67

PB
18866.67

OM
16648.67

M
17833.33

SS
18868.67

KM
16653.33

BC
17833.33

SI
18881.33

CS
16733.33

AU
17833.33

FL
19000.00

LF
16858.67

Qi
17867.33

DH
19095.33

PD
16912.67

I
17896.67

A
19157.67

TN
16966.67

CO
17899.67

BL
19403.67

HR
17066.67

XB
17933.33

X
19472.67

JS
17145.33

XC
17936.00

DE
19678.33

C
17233.33

BO
17945.33

RO
19780.33

WW
17240.67

WZ
17953.67

HI
20037.67

JN
17305.33

AJ
17966.67

W
20039.00

NB
17313.33

CE
17991.33

NH
20050.33

QQ
17333.33

SN
18026.00

QD
20231.67

VA
17350.00

E
18033.33

DT
20333.33

FJ
17356.67

D
18078.00

UP
20504.00

WP
17362.67

R
18086.33

VM
20547.00

QT
17383.67

TC
18093.33

WS
20566.67

SD
17411.33

WD
18122.00

AY
20722.00

1QP
17460.67

K
18139.67

AW
20762.00

WH
17466.67

WV
18162.00

UX
29700.00
X
TU
• = No data submitted
0 = Insufficient data

TAG SYMBOLS
x = Determined to be an outlier
ft
= Above control limit
s Below control limit
-------
ESD-LV Performance Evaluation: Tritium in Water, 7-Aug-1998
9/9
Tritium
% responding labs	Frequency distribution
10-
lllfrl

i i i	r*
-6	-4	-2	0	+2	+4	+6
Normalized deviation of the mean from the known value
% responding labs	Frequency distribution
10-

Dpi

•6	"4	-2	0	+2	+4	+6
Normalized deviation of the mean from the grand average
-------
United States	Ottice of Research and	EPA 600/R-98/176
Environmental Protection	Development	December 1998
Agency	Washington. DC 20460
&EPA Iodine in Water
Performance Evaluation
Study
A Statistical Evaluation
of the September 11,1998
Data
090ECB99 cov-0
-------
Iodine in Water
Performance Evaluation Study
September 11, 1998
Environmental Protection Agency
National Exposure Research Laboratory
Environmental Sciences Division
Las Vegas, Nevada
-------

UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
OFFICE OF RESEARCH AND DEVELOPMENT
NATIONAL EXPOSURE RESEARCH LABORATORY
ENVIRONMENTAL SCIENCES DIVISION-LAS VEGAS
P.O. BOX 93478
LAS VEGAS, NEVADA 89193-3478
(702/798-2100)
Dear Participant,
Enclosed are the results of the Environmental Sciences Division (ESD-LV)
Performance Evaluation Study for Iodine in Water; September 11, 1998.
The known value for each analysis was determined by gravimetric methods,
checked by chemical analyses performed by ESD-LV's Radiochemistry Laboratory,
and compared to the participating laboratories' grand average.
The expected precision, determined by the known value, was taken from
'Table 3. Laboratory Precision: One Standard Deviation Values and Control Limits
for Various Analyses", which is based on data accumulated over the years by the
Performance Evaluation Program, and can be found in the Environmental Radioactivity
Performance Evaluation Studies Program and Radioactive Standards Distribution
Program information brochure.
Please take a few minutes to review this report and the analytical data your
laboratory submitted to us. If there are any apparent discrepancies, please notify us
immediately.
We encourage you to make use of the computer-automated data-entry system
that has been in place for some time now. As the number of participants increases,
and it becomes unrealistic for us to receive results by mail or FAX, the computer
system will be our only avenue for accepting data.
If you have any questions or comments, please send a message via the data-entry
system or contact Stephen Pia at 702/798-2102 or Patricia Honsa at 702/798-2141.
Sincerely, /)
MfLf'u
Stephen Pia
Team Leader
RADQA Program
Enclosure
-------
NOTICE
This material has been funded wholly by
the U.S. Environmental Protection Agency.
It has been subjected to the Agency's review,
and has been approved for publication as
an EPA document.
-------
ESD-LV Performance Evaluation: Iodine in Water, ll-Sep-1998	1/7
The following pages consist of separate sections for each of the nuclides in this study with four
parts per section. After the first, each part is separated from the next by a new page or a thick
horizontal bar. The first page of each section is a statistical summary for the nuclide and starts
with a statement of the known value, the control limits, and the warning limits.
The warning limits are placed at two normalized standard deviations above and below the
known value and the control limits are three normalized standard deviations above and below
the known value. If you keep control charts, these values will be useful for anticipating problems
with the accuracy of your analytical methods.
The coin shaped pie chart at the top of the summary page shows the fate of all the samples
sent out in number and percentage terms. The pie chart starts at the top and rotates clockwise.
The first sector represents those participants who submitted analytical results within both the
warning and control limits. The next sector represents those who are in the warning region but
not out of control. The third sector represents those who are out of control, but have passed
the outlier test. The fourth sector represents those who have failed the outlier test. The last
sector represents those participants who have failed to respond properly. This is the case if no
analytical results were returned, or less than three determinations were reported, or if the results
were received too late. The reeding on the edge of the coin is spaced at one percent intervals, and
the sector shading becomes darker as the data reliability decreases. Sectors with zero width are
not shown.
The table in the center shows a number of statistical quantities calculated from the submitted
data based on the mean and median values in relation to the known value, both before and after
outlier removed. The lower pie chart uses the same construction as the upper chart and shows
the distribution of properly submitted data in terms of deviation from the known value divided
into sectors representing one, two, three, and greater than three normalized standard deviations.
The second part is an alphabetical listing, in lab-code order, of submitted data and several
calculated quantities. An entry that is shaded has been rejected because of one of the reasons
listed above or failure of the outlier test. The fifth and sixth columns are a measure of laboratory
precision. The Range analysis is a normalized value that you may vise to keep precision control
charts. The eighth and ninth columns are the differences from the mean of all non-outliers and
from the known value, respectively. If this value is between 2.0 and 3.0, your analytical process
precision is in the warning zone; if it exceeds 3.0 it is out of control. A tag symbol may appear in
the last column. Each page with tags has a symbol definition summary at the bottom. If there is
no tag symbol, the data is within the control limits, but it may be in the warning zone.
The third part is a three-column listing of result average, tag symbol, and lab-code in average
order excluding those labs not responding properly. In this order, all outliers and out-of-control
results appear at the top or bottom of the list.
The last part is two bar chart displays showing frequency distributions of responding
participants. The first chart places the known value at the center and a bar at each 0.2 unit of
expected precision. The second chart places the mean of the reported measurements at the center
and a bar at each 0.2 unit of standard deviation. In both cases, a bar includes those results within
0.1 unit up to the maximum of six. Any results more than six units from the center value are
shown cumulatively by a shaded bar one past the sixth unit. If the central tendency of the known
value distribution falls away from the center, an error in accuracy is indicated. If the distribution
is broad, poor precision is indicated. The mean value distribution is similar but uses the average
and standard deviation of reported results as its basis.
-------
-—		 —^
2/7	ESD-LV Performance Evaluation: Iodine in Water, ll-Sep-1998
		^
The Range Analysis(R + SR) is calculated from the range, mean range and standard error of
the range values. The range is the difference between the maximum and minimum results for the
laboratory. The mean range is calculated by multiplying the expected precision by 1.693(for three
results). The standard error of the range is calculated by multiplying the mean range by 2.575(for
three results), subtracting the mean range from this product, and dividing the result by 3. If the
range is greater than the mean range, then the range analysis is calculated by subtracting the
mean range from the range, dividing the result by the standard error of the range and adding 1.
If the mean range is greater than or equal to the range, then the range analysis is calculated by
dividing the range by the mean range.
The normalized deviation of the mean from the grand average is calculated from the deviation
of the mean from the grand average and the standard error of the mean values. The deviation of
the mean from the grand average is calculated by subtracting the grand average from the
average of the laboratory's three results. The standard error of the mean is calculated by
dividing the expected precision by the square root of 3(the number of results). The normalized
deviation of the mean from the grand average is calculated by dividing the deviation of the mean
from the grand average by the standard error of the mean.
The normalized deviation of the mean from the known value is calculated from the deviation of
the mean from the known value and the standard error of the mean values. The deviation of the
mean from the known value is calculated by subtracting the known value from the average of the
laboratory's three results. The standard error of the mean is calculated by dividing the expected
precision by the square root of 3(the number of results). The normalized deviation of the mean
from the known value is calculated by dividing the deviation of the mean from the known value by
the standard error of the mean.
A complete explanation of the statistical calculations involved in the report may be found in
the Environmental Radioactivity Performance Evaluation Studies Program information brochure
[Draft Revision of EPA-600/4-81-004], available from Patricia Honsa, ESD-LV, 702/798-2141.
-------
	.	 ^
ESD-LV Performance Evaluation: Iodine in Water, ll-Sep-1998	3/7
Iodine-131	Statistical Summary	106 Participants
The known value of this nuclide is 6.1 pCi/1 with an expected precision of 2.0; the control limits
are 2.6 to 9.6; the warning regions are 2.6 to 3.8 and 8.4 to 9.6
40(37.7 %) Failed to respond «
2(1.9 %) Outliers	
3(2.8 %) Out of control
but not an outlier
Statistic
. 59(55.7 %) Within all limits
Respondents
--- 2(1.9 %) In warning zone
but within control
Non-outliers
Mean
6.91
Grand Avg 6.70
Std. Dev.
1.69
1.17
Variance
2.87
1.38
% Coef. of Var.
24.50
17.55
% deviation of mean from known value
13.28
9.77
Norm. dev. of mean from known value
0.48
0.51
Median
6.48
6.43
% deviation of median from known value
6.28
5.46
Norm. dev. of median from known value
0.23
0.28
5(7.6 %) More than 3 norm. S.D. •,
2(3.0 %) Between 2 and 3 norm. S.D."
. 48(72.7 %) Within 1 norm. S.D.
•	of known value
» 11(16.7 %) Between 1 and 2 norm. S.D.
-------
r,	
4/7

ESD-LV Performance Evaluation: Iodine in Water, ll-Sep-1998

	
Iodine-131







\
Lab
Res. 1
Res. 2
Res. 3
Exper.
Rng anal

Normalized deviation

Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
A
6.5
6.1
5.7
0.40
0.236
6.10
-0.52
0.00

AF
7.2
6.1
6.0
0.67
0.354
6.43
-0.23
0.29

AJ
7.4
11.1
3.6
3.75
3.314
7.37
0.58
1.10

AK
7.9
9.1
7.2
0.96
0.561
8.07
1.19
1.70

AL
5.2
6.7
5.1
0.90
0.473
5.67
-0.89
-0.38

AP








•
AU








*
AW
5.9
5.9
6.2
0.17
0.089
6.00
-0.60
-0.09

AY
9.2
11.4
9.4
1.22
0.650
10.00
2.86
3.38
ft
AZ
6.4
4.0
4.9
1.21
0.709
5.10
-1.38
-0.87

BA
7.7
4.9
6.0
1.41
0.827
6.20
-0.43
009

BC








•
BH
7.4
8.3
7.1
0.62
0.354
7.60
0.78
1.30

BK
6.9
7.1
8.5
0.87
0.473
7.50
0.70
1.21

BL
7.2
6.2
6.4
0.53
0.295
6.60
-0.08
0.43

BM
6.3
6.8
5.4
0.71
0.413
6.17
-0.46
0.06

BO
5.9
6.1
5.3
0.42
0.236
5.77
-0.80
-0.29

C
5.8
5.2
6.0
0.42
0.236
5.67
-0.89
-0.38

CA
6.0
6.0
5.8
0.12
0.059
5.93
-0.66
-0.14

CC








• '
CE
6.8
7.8
6.0
0.90
0.532
6.87
0.15
0.66

CJ
5.4
5.9
6.5
0.55
0.325
5.93
-0.66
-0.14

CP








•
CS








•
CX
5.5
10.2
9.0
2.44
1.739
8.23
1.33
1.85

D
7.0
6.0
7.0
0.58
0.295
6.67
-0.03
0.49

DD
7.7
8.4
8.0
0.35
0.207
8.03
1.16
1.67

DE
9.6
9.8
10.0
0.20
0.118
9.80
2.69
3.20
ft
DR
8.3
10.6
9.0
1.18
0.679
9.30
2.26
2.77

DT
5.2
6.3
5.7
0.55
0.325
5.73
-0.83
-0.32

DY
6.7
6.4
5.6
0.57
0.325
6.23
-0.40
0.12

E
8.1
8.2
4.5
2.11
1.177
6.93
0.21
0.72

EB
5.5
4.8
5.3
0.36
0.207
5.20
-1.30
-0.78

EH
5.4
5.6
6.8
0.76
0.413
5.93
-0.66
-0.14

EL
6.0
6.0
4.8
0.69
0.354
5.60
-0.95
-0.43

EX
6.8
5.8
6.7
0.55
0.295
6.43
-0.23
0.29

FE








•
FL
6.8
7.1
5.7
0.74
0.413
6.53
-0.14
0.38

GI
5.8
7.8
6.8
1.00
0.591
6.80
0.09
0.61

HK
6.9
6.6
6.3
0.30
0.177
6.60
-0.08
0.43

HP







•
•
I
5.7
5.5
5.8
0.15
0.089
5.67
-0.89
-0.38

IA








•
IU








• _ '
J
6.4
5.8
5.4
0.50
0.295
5.87
-0.72
-0.20

• =
No data submitted

TAG SYMBOLS

ft = Above control limit
in

—¦)
Insufficient data
x =
Determined to be an outlier
•li = Below control limit
-------
k.

ESD-LV Performance Evaluation: Iodine in Water, ll-Sep-1998

5/7
Iodine-131








Lab
Res. 1
Res. 2
Res. 3
Exper.
Rng anal

Normalized deviation

Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
JR








9; '*
JS
5.5
6.4
6.0
0.45
0.266
5.97
-0.63
-0.12

JY
5.0
5.0
5.0
0.00
0.000
5.00
-1.47
-0.95

K
8.3
5.7
6.0
1.42
0.768
6.67
-0.03
0.49

KL
5.6
6.3
7.0
0.70
0.413
6.30
-0.34
0.17

KM
5.4
5.5
5.3
0.10
0.059
5.40
-1.12
-0.61

KX








• //v
L
6.9
6.5
6.3
0.31
U.177
6.57
-0.11
0.40

LF
7.2
6.4
7.4
0.53
0.295
7.00
0.26
0.78

LR
8.3
6.5
10.4
1.95
1.289
8.40
1.48
1.99

M
5.8
5.0
5.4
0.40
0.236
5.40
-1.12
-0.61

MN








*¦ % yf
- • V
MP








'•t ^
MV
13.*
16.4;
14.8 ^
1;60
0886.

ll7v08


N
6.6
7.9
6.4
0.81
0.443
6.97
0.23
0.75

NH
7.4
6.1
6.6
0.66
0.384
6.70
0.00
0.52

NJ
6.3
5.1
5.7
0.60
0.354
5.70
-0.86
-0.35

NO









O
S.3
6.4
6.1
0.15
0.089
6.27
-0.37
0.14

OA
4.5
7.0
6.9
142
0.738
6.13
-0.49
0.03

OB








" "'-wet
* ,'sv '
16.0
&51:
3.033
izmf
5il7
5.69

PB








' ~
PE








V
PW
7.0
8.0
6.0
1.00
0.591
7.00
0.26
0.78

Q
6.7
8.3
7.8
0.82
0.473
7.60
0.78
1.30

QX
5.1
6.0
7.6
1.27
0.738
6.23
-0.40
0.12

QY









QZ
D.l
t>.0
b.4
0.21
0.118
6.33
-0.31
0.20

R
7.0
6.6
7.0
0.23
0.118
6.87
0.15
0.66

:RK~








J
S
5.4
6.1
4.4
0.85
0.502
5.30
-1.21
-0.69

SD








"
SM









SS
5.8
6.0
6.3
0.25
0.148
6.03
-0.57
-0.06

SV
10.6
8.9
7.8
1.41
0.827
9.10
2.08
2.60

SZ









TA








•'
TC
7.3
7.4
7.8
0.26
0.148
7.50
0.70
1.21

TD









TF









TL








•.*»
TQ
5.4
7.7
3.7
2.01
1.345
5.60
-0.95
-0.43

U
7.!
7.6
7.1
0.29
0.148
7.27
0.49
1.01

UC



, ^ s




•!
• s No data submitted

TAG SYMBOLS

1T = Above control limit
0 s Insufficient data
x =
Determined to be an outlier
s Below control limit
	<0
-------
6/7

ESD-LV Performance Evaluation: Iodine in Water, ll-Sep-1998
Iodine-131



¦v
Lab
Res. 1
Res. 2 Res. 3
Exper.
Rng anal
Normalized deviation
Sigma
(R + SR)
Average (grand-avg) (known) Tag
UI




¦¦
UM





UP
5.2
6.3 6.0
0-57
0.325
5.83 -0.75 -0.23
UY





VA





VC





VM
10.0
10.0 10.0
0.00
0.000
10.00 2.86 3.38 ft
VN




•
W '





WM





WO




- 0^
X
9.5
7.5 3.7
2.95
2.358
6.90 0.18 0.69
XK





XQ





XT




•
Y
7.0
8.6 8.3
0.85
0.473
7.97 1.10 1.62
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
5.00

JY
6.10

A
6.93

E
5.10

AZ
6.13

OA
6.97

N
5.20

EB
6.17

BM
7.00

PW
5.30

S
6.20

BA
7.00

LF
5.40

M
6.23

QX
7.27

U
5.40

KM
6.23

DY
7.37

AJ
5.60

TQ
6.27

O
7.50

TC
5.60

EL
6.30

KL
7.50

BK
5.67

I
6.33

QZ
7.60

Q
5.67

C
6.43

AF
7.60

BH
5.67

AL
6.43

EX
7.97

Y
5.70

NJ
6.53

FL
8.03

DD
5.73

DT
6.57

L
8.07

AK
5.77

BO
6.60

BL
8.23

CX
5.83

UP
6.60

HK
8.40

LR
5.87

J
6.67

K
9.10

SV
5.93

EH
6.67

D
9.30

DR
5.93

CJ
6.70

NH
9.80
It
DE
5.93

CA
6.80

GI
10.00
It
VM
5.97

JS
6.87

R
10.00
IT
AY
6.00

AW
6.87

CE
12.67
X
OT
6.03

ss
6.90

X
14.87
X
MV
• = No data submitted	TAG SYMBOLS	ft = Above control limit
0 = Insufficient data	x = Determined to be an outlier	h Below control limit
V-	==i/
-------
ESD-LV Performance Evaluation: Iodine in Water, ll-Sep-1998	7/7
Iodine-131
% responding labs	Frequency distribution	
10-
Win
I	i	I	1	I	T----T""T-	~	mu i " I	1	¦—r2
-6	-4	-2	0	+2	+4	+6
Normalized deviation of the mean from the known value
% responding labs	Frequency distribution	
oiv""""""V"""^ iijlwlf.h;ii"p
-6	-4	-2	0	+2	+4	+6
Normalized deviation of the mean from the grand average
-------
United States
Environmental Protection
Agency
Office of Research and
Development
Washington, DC 20460
EPA 600/R-98/180
December 1998
4vEPA Uranium-Radium in Water
Performance Evaluation
Study
A Statistical Evaluation
of the September 18, 1998
Data
090ECB99 cov-E
-------
Uranium-Radium in Water
Performance Evaluation Study
September 18, 1998
Environmental Protection Agency
National Exposure Research Laboratory
Environmental Sciences Division
Las Vegas, Nevada
-------

UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
OFFICE OF RESEARCH AND DEVELOPMENT
NATIONAL EXPOSURE RESEARCH LABORATORY
ENVIRONMENTAL SCIENCES DIVISION-LAS VEGAS
P.O. BOX 93478
LAS VEGAS, NEVADA 89193-3478
(702/798-2100)

Dear Participant,
Enclosed are the results of the Environmental Sciences Division (ESD-LV)
Performance Evaluation Study for Uranium-Radium in Water; September 18, 1998.
The known value for each analysis was determined by gravimetric methods,
checked by chemical analyses performed by ESD-LV's Radiochemistry Laboratory,
and compared to the participating laboratories' grand average.
The expected precision, determined by the known value, was taken from
'Table 3. Laboratory Precision: One Standard Deviation Values and Control Limits
for Various Analyses", which is based on data accumulated over the years by the
Performance Evaluation Program, and can be found in the Environmental Radioactivity
Performance Evaluation Studies Program and Radioactive Standards Distribution
Program information brochure.
Please take a few minutes to review this report and the analytical data your
laboratory submitted to us. If there are any apparent discrepancies, please notify us
immediately.
We encourage you to make use of the computer-automated data-entry system
that has been in place for some time now. As the number of participants increases,
and it becomes unrealistic for us to receive results by mall or FAX, the computer
system will be our only avenue for accepting data.
If you have any questions or comments, please send a message via the data-entry
system or contact Stephen Pia at 702/798-2102 or Patricia Honsa at 702/798-2141.
Stephen Pia
Team Leader
RADQA Program
Enclosure
-------
NOTICE
This material has been funded wholly by
the U.S. Environmental Protection Agency.
It has been subjected to the Agency's review,
and has been approved for publication as
an EPA document.
-------
	
ESD-LV Performance Evaluation: Uranium-Radium in Water, 18-Sep-1998 1/20
The following pages consist of separate sections for each of the nuclides in this study with four
parts per section. After the first, each part is separated from the next by a new page or a thick
horizontal bar. The first page of each section is a statistical summary for the nuclide and starts
with a statement of the known value, the control limits, and the warning limits.
The warning limits are placed at two normalized standard deviations above and below the
known value and the control limits are three normalized standard deviations above and below
the known value. If you keep control charts, these values will be useful for anticipating problems
with the accuracy of your analytical methods.
The coin shaped pie chart at the top of the summary page shows the fate of all the samples
sent out in number and percentage terms. The pie chart starts at the top and rotates clockwise.
The first sector represents those participants who submitted analytical results within both the
warning and control limits. The next sector represents those who are in the warning region but
not out of control. The third sector represents those who are out of control, but have passed
the outlier test. The fourth sector represents those who have failed the outlier test. The last
sector represents those participants who have failed to respond properly. This is the case if no
analytical results were returned, or less than three determinations were reported, or if the results
were received too late. The reeding on the edge of the coin is spaced at one percent intervals, and
the sector shading becomes darker as the data reliability decreases. Sectors with zero width are
not shown.
The table in the center shows a number of statistical quantities calculated from the submitted
data based on the mean and median values in relation to the known value, both before and after
outlier removal. The lower pie chart uses the same construction as the upper chart and shows
the distribution of properly submitted data in terms of deviation from the known value divided
into sectors representing one, two, three, and greater than three normalized standard deviations.
The second part is an alphabetical listing, in lab-code order, of submitted data and several
calculated quantities. An entry that is shaded has been rejected because of one of the reasons
listed above or failure of the outlier test. The fifth and sixth columns are a measure of laboratory
precision. The Range analysis is a normalized value that you may use to keep precision control
charts. The eighth and ninth columns are the differences from the mean of all non-outliers and
from the known value, respectively. If this value is between 2.0 and 3.0, your analytical process
precision is in the warning zone; if it exceeds 3.0 it is out of control. A tag symbol may appear in
the last column. Each page with tags has a symbol definition summary at the bottom. If there is
no tag symbol, the data is within the control limits, but it may be in the warning zone.
The third part is a three-column listing of result average, tag symbol, and lab-code in average
order excluding those labs not responding properly. In this order, all outliers and out-of-control
results appear at the top or bottom of the list.
The last part is two bar chart displays showing frequency distributions of responding
participants. The first chart places the known value at the center and a bar at each 0.2 unit of
expected precision. The second chart places the mean of the reported measurements at the center
and a bar at each 0.2 unit of standard deviation. In both cases, a bar includes those results within
0.1 unit up to the maximum of six. Any results more than six units from the center value are
shown cumulatively by a shaded bar one past the sixth unit. If the central tendency of the known
value distribution falls away from the center, an error in accuracy is indicated. If the distribution
is broad, poor precision is indicated. The mean value distribution is similar but uses the average
and standard deviation of reported results as its basis.
-------
2/20
ESD-LV Performance Evaluation: Uranium-Radium in Water, 18-Sep-1998
The Range Analysis(R + SR) is calculated from the range, mean range and standard error of
the range values. The range is the difference between the maximum and minimum results for the
laboratory. The mean range is calculated by multiplying the expected precision by 1.693(for three
results). The standard error of the range is calculated by multiplying the mean range by 2.575(for
three results), subtracting the mean range from this product, and dividing the result by 3. If the
range is greater than the mean range, then the range analysis is calculated by subtracting the
mean range from the range, dividing the result by the standard error of the range and adding 1.
If the mean range is greater than or equal to the range, then the range analysis is calculated by
dividing the range by the mean range.
The normalized deviation of the mean from the grand average is calculated from the deviation
of the mean from the grand average and the standard error of the mean values. The deviation of
the mean from the grand average is calculated by subtracting the grand average from the
average of the laboratory's three results. The standard error of the mean is calculated by
dividing the expected precision by the square root of 3(the number of results). The normalized
deviation of the mean from the grand average is calculated by dividing the deviation of the mean
from the grand average by the standard error of the mean.
The normalized deviation of the mean from the known value is calculated from the deviation of
the mean from the known value and the standard error of the mean values. The deviation of the
mean from the known value is calculated by subtracting the known value from the average of the
laboratory's three results. The standard error of the mean is calculated by dividing the expected
precision by the square root of 3(the number of results). The normalized deviation of the mean
from the known value is calculated by dividing the deviation of the mean from the known value by
the standard error of the mean.
A complete explanation of the statistical calculations involved in the report may be found in
the Environmental Radioactivity Performance Evaluation Studies Program information brochure
[Draft Revision of EPA-600/4-81-004], available from Patricia Honsa, ESD-LV, 702/798-2141.
-------
ESD-LV Performance Evaluation: Uranium-Radium in Water, 18-Sep-1998 3 / 20
Uranium (Natural)	Statistical Summary	148 Participants
The known value of this nuclide is 9.1 pCi/1 with an expected precision of 3.0; the control limits
are 3.9 to 14.3; the warning regions are 3.9 to 5.6 and 12.6 to 14.3
57(38.5 %} Failed to respond
4(2.7 %) Outliers
Statistic
85(57.4 %) Within all limits
Respondents
.4 %) In warning zone
but within control
Non-outliers
Mean
Std. Dev.
Variance
% Coef. of Var.
% deviation of mean from known value
Norm. dev. of mean from known value
Median
% deviation of median from known value
Norm. dev. of median from known value
9.74
Grand Avg 8.62
9.63
1.13
92.83
1.29
98.88
13.17
7.08
-5.31
0.07
-0.43
8.73
8.73
-4.03
-4.03
-0.04
-0.32
-------
,f	








	^
4/20 ESD-LV Performance Evaluation: Uranium-Radium in Water, 18-Sep-1998
\

Uranium (Natural)







Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation

Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
A
8.5
8.5
8.5
0.00
0.000
8.50
-0.07
-0.35

AE
8.3
7.9
8.2
0.21
0.079
8.13
-0.28
-0.56

AF
11.0
11.4
10.3
0.56
0.217
10.90
1.32
1.04

AH








•
AJ
7.2
7.0
8.1
0.59
0.217
7.43
-0.68
-0.96

AK
11.0
10.9
10.9
0.06
0.020
10.93
1.34
1.06

AL
7.0
8.2
7.9
0.62
0.236
7.70
-0.53
-0.81

AP








~
AB
8.1
7.9
7.8
0.15
0.059
7.93
-0.39
-0.67

AU








•
AW
8.1
7.9
8.5
0.31
0.118
8.17
-0.26
-0.54

AZ








•
BA
9.7
9.3
9.7
0.23
0.079
9.57
0.55
0.27

BB
8.2
8.7
8.5
0.25
0.098
8.47
-0.09
-0.37

BC
8.7
8.6
8.4
0.15
0.059
8.57
-0.03
-0.31

BG








*.
BH
10.3
10.6
10.6
0.17
0.059
10.50
1.09
0.81

BK
8.9
8.9
8.8
0.06
0.020
8.87
0.14
-0.13

BM
8.9
9.7
10.2
0.66
0.256
9.60
0.57
0.29

BN
10.4
8.5
7.1
1.66
0.650
8.67
0.03
-0.25

BO
10.1
10.0
9.9
0.10
0.039
10.00
0.80
0.52

C
9.3
8.7
8.5
0.42
0.158
8.83
0.12
-0.15

CA
8.6
7.7
8 2
0.45
0.177
8.17
-0.26
-0.54

CC









CE
9.3
9.8
9.8
0.29
0.098
9.63
0.59
0.31

CJ
9.5
9.6
9.2
0.21
0.079
9.43
0.47
0.19

CS
8.8
8.8
8.8
0.00
0.000
8.80
0.11
-0.17

cx
10.4
10.2
10.0
0.20
0.079
10.20
0.91
0.64

D
9.1
8.8
9.0
015
0.059
8.97
0.20
-0.08

DB
6.3
5.9
7.4
0.78
0.295
6.53
-1.20
-1.48

DE
9.5
9.5
9.5
0.00
0.000
9.50
0.51
0.23

DI








t* '
DO
8.0
8.5
8.4
0.26
0.098
8.30
-0.18
-0.46

DR








* *
DT
8.2
8.3
8.8
0.32
0.118
8.43
-0.11
-0.38

DZ
9.3
9.3
9,6
0.17
0.059
9.40
0.45
0.17

E
9.1
9.0
9.1
0.06
0.020
9.07
0.26
-0.02

EB









EL
8.5
8.5
8.4
0.06
0.020
8.47
-0.09
-0.37

EO








¦,
EP.








• "
ER
8.6
8.3
7.9
0.35

8.27
-0.20
-0.48

FE








•
FJ








*
FN


. ... .
" V,





• =
No data, submitted

TAG SYMBOLS

1T = Above control limit
in
-------
f,	








	Sn

ESD-LV Performance Evaluation: Uranium-Radium in Water, 18-Sep-1998 5/20
Uranium (Natural)








Lab



Exper.
Rng anal

Normalized deviation

Res. 1 Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
GN
5.7
7.3
7.0
0.85
0.315
6.67
-1.13
-1.40

GQ
6.5
7.0
8.7
1.15
0.433
7.40
-0.70
-0.98

HE
8.0
8.1
7.9
0.10
0.039
8.00
-0.36
-0.64

HK
10.4
9.4
9.6
0.53
0.197
9.80
0.68
0.40

HL
8.9
8.8
8.9
0.06
0.020
8.87
0.14
-0.13

HP
99 ;2"
95:4
102X)
3.31
1.570
98.87
52111
51.83

I
8.9
8.5
8.6
0.21
0.079
8.67
0.03
-0.25
ID









J








"< •*
JE
8.4
8.7
8.0
0.35
0.138
8.37
-0.14
-0.42

JG









JK
8.5
9.0
8.6
0.26
0.098
8.70
0.05
-0.23

JN
8.1
8.6
8.3
0.25
0.098
8.33
-0.16
-0.44

JS
9.0
8.9
8.9
0.06
0.020
8.93
0.18
-0.10

JX









JY
8.9
8.9
8.4
0.29
0.098
8.73
0.07
-0.21

K
8.1
8.7
8.7
0.35
0.118
8.50
-0.07
-0.35
i
KH
9.0
9.0
9.0
0.00
0.000
9.00
0.22
-0.06

KL









KT
9.0
9.5
10.0
0.50
0.197
9.50
0.51
0.23

L
8.9
9.0
9.3
0.21
0.079
9.07
0.26
-0.02

LF
9.3
8.9
8.7
0.31
0.118
8.97
0.20
-0.08

LH









LZ
8.0
8.6
8.3
0.30
0.118
8.30
-0.18
-0.46

M









MP









MX
10.6
7.0
6.1
2.38
0.886
7.90
-0.41
-0.69

N








'1M
NA
10.0
9.0
11.0
1.00
0.394
10.00
0.80
0.52

NH
8.0
7.2
9.6
1.22
0.473
8.27
-0.20
-0.48

NJ
91
8.7
8.9
0.20
0.079
8.90
0.16
-0.12

NK









NO









O









OB
8.0
8.4
9.3
0.67
0.256
8.57
-0.03
-0.31

OF









OS
8.4
90
8.4
0.35
0.118
8.60
-0.01
-0.29

OX







V. '

P
8.0
8.6
8.3
0.30
0.118
8.30
-0.18
-0.46

PB








¦
PG
4.7
4.6
4.3
0.21
0.079
4.53
-2.36
-2.64

PQ
10.0
10.3
T0.4
0.21
0.079
10.23
0.93
0.65

PW








* :m
PX
9.4
9.2
9.1
0.15
0.059
9.23
0.36
0.08

Q
8.1
9.2
9.1
0.61
0.217
8.80
0.11
-0.17

• =
No data submitted

TAG SYMBOLS

1) = Above control limit
0 s
	
Insufficient data
x =
Determined to be an outlier
li = Below control limit
-------
6/20 ESD-LV Performance Evaluation: Uranium-Radium in Water, 18-Sep-1998
	VI
Uranium (Natural)











Res. 3
Exper.
Rng anal

Normalized deviation

Lab
Kes. 1 Res. 2
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
QM
11.0
11.1
10.8
0.15
0.059
10.97
1.36
1.08

QQ
7.1
7.2
7.5
0.21
0.079
7.27
-0.78
-1.06

QU
10.2
9.0
9.2
0.64
0.236
9.47
0.49
0.21

QX








r
QY








, •
QZ
8.6
8.9
8.7
0.15
0.059
8.73
0.07
-0.21

R







'
~
RD








. • -
RG
9.0
9.0
9.1
0.06
0.020
9.03
0.24
-0.04

RK








- * .
RP
9.2
9.1
8.9
0.15
0.059
9.07
0.26
-0.02

RR








• ¦
RX
5.6
4.6
5.0
0.50
0.197
5.07
-2.05
-2.33

RZ
7.9
7.5
7.6
0.21
0.079
7.67
-0.55
-0,83

S
8.6
8.7
8.5
0.10
0.039
8.60
-0.01
-0.29

SD
8.2
8.3
8.1
0.10
0.039
8.20
-0.24
-0.52

SF









SI
17.7
18.4
17.6
0.44
0.158
17.90
5.36:,
5.08 -1

SL
5.8
6.4
6.9
0.55
0.217
6.37
-1.30
-1.58

SM
9.0
8.9
8.9
0.06
0.020
8.93
0.18
-0.10

SO









ss
9.4
9.2
9.1
0.15
0.059
9.23
0.36
0.08

sx
T
8.5
8.1
8.4
0.21
0.079
8.33
-0.16
-0.44
• --
M.
TD
8.9
8.9
9.0
0.06
0.020
8.93
0.18
-0.10
•.
TN








•v
TQ
9.1
9.4
9.5
0.21
0.079
9.33
0.41
0.13

U
9.5
8.8
9.5
0.40
0.138
9.27
0.37
0.10

UM









UP
7.9
8.3
7.2
0.56
0.217
7.80
-0.47
-0.75

UQ









UR









UZ
6.1
6.1
8.1
1.15
0.394
6.77
-1.07
-1.35

VA








«. 1
VH








• .
VI
9.4
9.1
9.1
0.17
0.059
9.20
0.34
0.06

w








.. •
WC









WG
9.1
9.3
9.4
0.15
0.059
9.27
0.37
0.10

WH
7.0
6.9
7.0
0.06
0.020
6.97
-0.95
-1.23

WI








- *
WJ









WO
6.0
6.1
6.0
0.06
0.020
6.03
-1.49
-1.77

WR








• _ -
WS








•
• =
No data submitted

TAG SYMBOLS

ft s Above control limit
0 =
Insufficient data
X s
Determined to be an outlier
= Below control limit
-------

ESD-LV Performance Evaluation: Uranium-Radium in Water, 18-Sep-1998 7/20 ^
Uranium (Natural)








>
Lab
Res. 1




Exper.
Rng anal

Normalized deviation

Res. 2
Res. 3
Sigma
(R + SR)
Average (grand-avg) (known) Tag
WX










• -
X
8.6

8.3

8.9
0.30
0.118
8.60 -0.01
-0.29

XA
7.9

6.5

8.4
0.98
0.374
7.60 -0.59
-0.87

XC










*•
XD










•
XI
18,0

iSiO;
18.0
000
0.000
18.00' 5i42
, 5.14
X
XK










•
XL
10.3

10.5
10.6
0.15
0.059
10.47 1.07
0.79

XM
8.6

8.9

8.7
0.15
0.059
8.73 0.07
-0.21

XQ










' '• -
xs
2.2

. 2.4-

2.2^
0;12
0.039
2.27 -3.67
-3.95

XTW











Y
8.7

8.8

8.7
0.06
0.020
8.73 0.07
-0.21





Data sorted by Laboratory Averaj
[e


Average

Tag

Lab
Average
Tag
Lab
Average
Tag
Lab
2.27

X

XS

8.33

JN
8.97

D
4.53



PG

8.37

JE
9.00

KH
5.07



RX

8.43

DT
9.03

RG
6.03



WO

8.47

EL
9.07

RP
6.37



SL

8.47

BB
9.07

L
6.53



DB

8.50

K
9.07

E
6.67



GN

8.50

A
9.20

VI
6.77



UZ

8.57

OB
9.23

SS
6.97



WH

8.57

BC
9.23

PX
7.27



QQ

8.60

OS
9.27

WG
7.40



GQ

8.60

X
9.27

U
7.43



AJ

8.60

S
9.33

TQ
7.60



XA

8.67

I
9.40

DZ
7.67



RZ

8.67

BN
9.43

CJ
7.70



AL

8.70

JK
9.47

QU
7.80



UP

8.73

JY
9.50

KT
7.90



MX

8.73

Y
9.50

DE
7.93



AR

8.73

XM
9.57

BA
8.00



HE

8.73

QZ
9.60

BN
8.13



AE

8.80

Q
9.63

CE
8.17



CA

8.80

CS
9.80

HF
8.17



AW

8.83

C
10.00

NA
8.20



SD

8.87

HL
10.00

BC
8.27



NH

8.87

BK
10.20

CX
8.27



ER

8.90

NJ
10.23

PC
8.30



P

8.93

TD
10.47

XL
8.30



LZ

8.93

SM
10.50

Bl
8.30



DO

8.93

JS
10.90

AP
8.33



sx

8.97

LF
10.93

AI
• s No data submitted


TAG SYMBOLS

IT = Above control limi
[0s Insufficient data


x =
Determined to be an outlier
•11 s Below control limi
-------
8/20 ESD-LV Performance Evaluation: Uranium-Radium in Water, 38-Sep-1998
Uranium (Natural)
Average
10.97
Data sorted by Laboratory Average
Tag	Lab Average	Tag	Lab
QM
17.90
SI
Average
18.00
98.87
Tag
x
x
Lab
XI
HP
20-
10-
responding tabs
Frequency distribution
-4	-2	6	+2	+4
Normalized deviation of the mean from the known value
% responding labs
20-—		5	
Frequency distribution
Normalized deviation of the mean from the grand average
• s No data submitted
0 = Insufficient data
TAG SYMBOLS
x = Determined to be an outlier
ft s Above control limit
JJ == Below control limit
-------
ESD-LV Performance Evaluation: Uranium-Radium in Water, 18-Sep-1998 9/20
Radium-226	Statistical Summary	148 Participants
The known value of this nuclide is 1.7 pCi/1 with an expected precision of 0.3; the control limits
are 1.2 to 2.2; the warning regions are 1.2 to 1.4 and 2.0 to 2.2
58(39.2 %) Failed to respond
11 (7.4 %) Outliers
10(6.8 %) Out of control
but not an outlier
Statistic
. 58(39.2 %) Within all limits
Respondents
11 (7.4 %) In warning zone
but within control
Non-outliers
Mean
2.25
Grand Avg 1.82
Std. Dev.
1.59
0.29
Variance
2.54
0.09
% Coef. of Var.
70.80
16.17
% deviation of mean from known value
32.40
6.95
Norm. dev. of mean from known value
0.35
0.40
Median
1.80
1.77
% deviation of median from known value
5.88
3.92
Norm. dev. of median from known value
0.06
0.23
21(23.3 %) More than 3 norm. S.D. •
11 (12.2 %) Between 2 and 3 norm. S.D. *
;43(47.8 %) Within 1 norm. S.D.
of known value
15(16.7 %) Between 1 and 2 norm. S.D.
-------
10/20 ESD-LV Performance Evaluation: Uranium-Radium in Water, 18-Sep-1998
Radium-226
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
A
1.7
1.6
1.7
0.06
0.197
1.67
-0.87
-0,19

AE
1.8
1.9
2.0
0.10
0.394
1.90
0.47
1.15

AF
1.8
1.7
1.8
0.06
0.197
1.77
-0.30
0.38

AH








•
AJ
2.8
1.1
1.5
0.89
5.471
1.80
-0.10
0.58

AK
1.8
1.7
1.6
0.10
0.394
1.70
-0.68
0.00

AL
1.9
1.8
1.4
0.26
0.984
1.70
-0.68
0.00

AP








~
AR








• "*
AU
0.8
0.7
0.6
0.10
0.394,
0.70
-646
.-5X7
x\
AW
2.2
2.3
2.3
0.06
0.197
2.27
2.59
3.27
it
AZ








• - /
BA
1.4
1.8
1.6
0.20
0.788
1.60
-1.26
-0.58

BB
2.1
2.3
1.9
0.20
0.788
2.10
1.63
2.31

BC
2.1
2.0
2.0
0.06
0.197
2.03
1.24
1.92

BG








¦ J f
BH
2.3
1.9
1.7
0.31
1.345
1.97
0.86
1.54

BK
1.7
1.7
1.7
0.00
0.000
1.70
-0.68
0.00

BM
2.0
1.9
1.9
0.06
0.197
1.93
0.67
1.35

BN
3.7
3.4
::3\7.
017
0.591
3.60
10.29
<10:97
-•Xr;-
BO
1.7
1.7
1.6
0.06
0.197
1.67
-0.87
-0.19

C
1.9
1.9
1.9
0.00
0.000
1.90
0.47
1.15

CA
1.6
1.8
L8
0.12
0.394
1.73
-0.49
0.19

CC








•/ -
CE
1.9
1.8
1.8
0.06
0.197
1.83
0.09
0.77

CJ
1.8
1.0
1.8
0.46
2.095
1.53
-1.64
-0.96

CS
2.3
2.2
2.4
0.10
0.394
2.30
2.78
3.46
J
CX









D ^









OB
2.2
2.3
2.1
0.10
0.394
2.20
2.20
2.89

DE
1.8
1.8
1.9
0.06
0.197
1.83
0.09
0.77

DI









DO








• vr
DR








• '-V
DT
1.6
1.7
1.6
0.06
0.197
1.63
-1.07
-0.38

DZ
1.7
1.9
2.1
0.20
0.788
1.90
0.47
1.15

E
1.9
2.0
2.1
0.10
0.394
2.00
1.05
1.73

EB
1.6
1.6
1.4
0.12
0.394
1.53
-1.64
-0.96

EL
1.6
1.8
1.8
0.12
0.394
1.73
-0.49
0.19

EO
1.7
2.2
2.0
0.25
0.984
i.97
0.86
1.54

EP








• . '
ER
1.7
1.7
1.6
0.06
0.197
1.67
-0.87
-0.19

FE








• * <¦
FJ








#
FN








' V -
• = No data submitted	TAG SYMBOLS	ff = Above control limit
[05 Insufficient data	x s Determined to be an outlier	= Below control limit
-------
ESD-LV Performance Evaluation: Uranium-Radium in Water, 18-Sep-1998 11/20
/		1
Radium-226
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
GN
3.6
3.3
• 3.4
0.15
0.591
- 3.43
9:33
10.01
X-
GQ
1.1
1.7
1.4
0.30
1.345
1.40
-2.41
-1.73

HE
1.6
1.7
1.6
0.06
0.197
1.63
-1.07
-0.38

HK
1.7
1.7
1.7
0.00
0.000
1.70
-0.68
0.00

HL
1.6
1.4
1.8
0.20
0.788
1.60
-1.26
-0.58

HP
1.8
2.0
1.8
0.12
0.394
1.87
0.28
0.96

I
2.1
2.3
2.2
0.10
0.394
2.20
2.20
2.89

ID
J
1.6
1.3
1.5
0.15
0.591
1.47
-2.03
-1.35

J JK
2.3
1.4
1.6
0.47
2.470
1.77
-0.30
0.38
• £>
JG









JK









JN








•
JS
1.8
1.6
1.1
0.36
1.720
1.50
-1.84
-1.15

JX
2.1
2.3
2.0
0.15
0.591
2.13
1.82
2.50

JY
1.3
1.2
1.1
0.10
0.394
1.20
-3.57
-2.89

K
1.7
1.7
1.8
0.06
0.197
1.73
-0.49
0.19

KH
1.8
1.8
1.8
0.00
0.000
1.80
-0.10
0.58

KL
3.3
2.1
1.5
0.92
5.846
2.30
2.78
3.46
tr
KT








•v ¦
L
1.4
1.3
L2
0.10
0.394
1.30
-2.99
-2.31

ISF








"""¦ 2 % ^ *<*
LH









LZ
1.5
1.7
1.5
0.12
0.394
1.57
-1.45
-0.77

M
3.0
2.5
2.7
0.25
0.984
2.73
5.28
5.97
rr
MF
1.1
1.3
1.4
0.15
0.591
1.27
-3.18
-2.50

MX
1.3
1.7
1.7
0.23
0.788
1.57
-1.45
-0.77

N








• 'V
• *
NA








-
NH
1.8
1.8
1.9
0.06
0.197
1.83
0.09
0.77

NJ
2.3
2.8
2.0
0.40
2.095
2.37
3.17
3.85

NK








-.'T, H
NO








v\.
O
2.2
1.8
1.7
0.26
0.984
1.90
0.47
1.15

OB









OF*








* 0
OS









OX









P
ts3
to
2.5
2.1
0.21
0.788
2.27
2.59
3.27
n
PB








-- • '-.V
PG
7.9
79
: 7.8
0.06
0.197
*87
34;92
36.60

PQ








•
PW








•
PX
1.8
1.8
1.8
0.00
0.000
1.80
-0.10
0.58

Q
1.4
1.4
1.7
0.17
0.591
1.50
-1.84
-1.15

• S
No data submitted

TAG SYMBOLS

IT s Above control limit
0 = Insufficient data	x = Determined to be an outlier	U s Below control limit
-------
			 ^
12/20 ESD-LV Performance Evaluation: Uranium-Radium in Water, 18-Sep-1998
(
Radium-226
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known)
Tag
QM
2.5
2.3
2.3
0.12
0.394
2.37
3.17
3.85
n
QQ
2.2
2.0
1.9
0.15
0.591
2.03
1.24
1.92

QU
3.7
3.8
3.7
0.06
0.197
3.73
11.06
11.74
X
QX








•
QY
1.8
1.9
1.6
0.15
0.591
1.77
-0.30
0.38

QZ
1.7
1.6
1.8
0.10
0.394
1.70
-0.68
0.00

R
2.1
1.6
1.3
0.40
2.095
1.67
-0.87
-0.19

RD
12.5
12.5
12.5
0.00
0.000;.
.12 50.
-61.67
62.35
X
RG








•
RK








. •
BP








•
KR








*
RX
5.2
5.6
5.1
0.26
0.984
5.30^
20.10
20.78
X .
RZ
1.5
1.6
1.6
0.06
0.197
1.57
-1.45
-0.77

S
1.8
1.7
1.7
0.06
0.197
1.73
-0.49
0.19

SD
2.0
1.8
1.7
0.15
0.591
1.83
0.09
0.77

SF








; V
SI
6.1 v
6 3.
;5.8;.;
0.25
0.984
6.07 I
24.53
25.21.
rbt*.
SL







:¦ V:

SM
2.0
2.0
2.2
0.12
0.394
2.07
1.43
2.12

SO









ss
1.4
1.9
1.6
0.25
0.984
1.63
-1.07
-0.38

sx
T
1.7
1.8
16
0.10
0.394
1.70
-0.68
0.00

TD
2.2
2.1
2.2
0.06
0.197
2.17
2.01
2.69
•
TN
1.9
1.6
1.6
0.17
0.591
1.70
-0.68
0.00

TQ
1.7
1.5
1.5
0.12
0.394
1.57
-1.45
-0.77

U
2.4
2.3
2.4
0.06
0.197
2.37
3.17
3.85
rr
UM
-








UP
1.5
1.6
2.0
0.26
0.984
1.70
-0.68
0.00

UQ
1.7
1.6
1.7
0.06
0.197
1.67
-0.87
-0.19

UR









UZ








~
VA









VH








•
VI
1.7
1.7
1.8
0.06
0.197
1.73
-0.49
019

W









WC
5.4
5.8
5.1;
0.35
1.720
5.43
20,87
21.65
X
WG









WH
1.7
1.9
1.8
0.10
0.394
1.80
-0.10
0.58

WI








•
WJ
1.6
1.9
1.8
0.15
0.591
1.77
-0.30
0.38

WO
2.8
3.1
3.1
0.17
0.591
3.00"
"6.82
7.51
X
WR








~
WS








~
(f	
$ •
hi "I
No data submitted
Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
ft = Above control limit
11 = Below control limit
	-V
-------
ESD-LV Performance Evaluation: Uranium-Radium in Water, 18-Sep-1998 13 / 20
Radium-226











=
-------
14/20 ESD-LV Performance Evaluation: Uranium-Radium in Water, 18-Sep-1998
Radium-226
Average
Data sorted by Laboratory Average
Lab Average	Tag	Lab Average
% responding labs
Frequency distribution
10-
JB	 won m, ¦HBBB
% responding labs
-4	-2	0	+2	+4
Normalized deviation of the mean from the known value
Frequency distribution
Normalized deviation of the mean from the grand average
+6
• = No data submitted
0 = Insufficient data .
TAG SYMBOLS
x h Determined to be an outlier.
IT s Above control limit
J1 = Below control limit
-------
ESD-LV Performance Evaluation: Uranium-Radium in Water, 18-Sep-1998 15 / 20
Radium-228
Statistical Summary
148 Participants
The known value of this nuclide is 5.7 pCi/1 with an expected precision of 1.4; the control limits
are 3.3 to 8.1; the warning regions are 3.3 to 4.1 and 7.3 to 8.1
73(49.3 %) Failed to respond
6(4.1 %) Outliers
Statistic
, 66(44.6 %) Within all limits
Respondents
3(2.0 %) In warning zone
but within control
Non-outliers
Mean
5.75
Grand Avg 5.76
Std. Dev.
1.29
0.82
Variance
1.66
0.67
% Coef. of Var.
22.42
14.25
% deviation of mean from known value
0.80
1.05
Norm. dev. of mean from known value
0.04
0.07
Median
5.80
5.80
% deviation of median from known value
1.75
1.75
Norm. dev. of median from known value
0.08
0.12
6(8.0 %) More than 3 norm. S.D.
3(4.0 %) Between 2 and 3 norm. S.D.
; 42(56.0 %) Within 1 norm. S.D.
of known value
24(32.0 %) Between 1 and 2 norm. S.D.
-------
ft
16/20 ESD-LV Performance Evaluation: Uranium-Radium in Water, 18-Sep-1998
	^
Radium-228







-
Lab
Res. 1
Res. 2
Res. 3
Exper.
Rng anal

Normalized deviation

Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
A
7.3
8.8
6.8
1.04
0.844
7.63
2.32
2.39

AE
4.8
4.7
4.6
0.10
0.084
4.70
-1.31
-1.24

AF
6.1
6.7
6.5
0.31
0.253
6.43
O-83
0.91

AH








•
AJ
5.9
5.3
5.8
0.32
0.253
5.67
-0.12
-0.04

AK
2.6
2.4
2.5
0.10
0.084 ,
2;50
/ -4.03 :
. -3.96
X
AL
6.1
4.4
4.1
1.08
0.844
4.87
-1.11
-1.03

AP

'


'; v> '

; ¦		 *
•
AR




' - • ',



•
AU

: •: ¦


,k - ' * ¦"
y ,s'\ v
^ v"? r .¦ ,

•
AW
4.1
4.5
4.7
0.31
0.253
4.43
-1.64
-1.51

AZ


'


J>
J'" . .TV/-

*
BA
4.5
5.3
4.8
0.40
0.338
4.87
-1.11
-1.03

BB
6.8
6.9
6.6
0.15
0.127
6.77
1.25
1.32

BC
6.6
5.8
5.6
0.53
0.422
600
°:30
0.37

BG




V-
¦ ~



BH
6.1
6.5
5.8
0.35
0.295
6.13
0.46
0.54

BK
6.7
6.2
6.4
0.25
0.211
6.43
0.83
0.91

BM
5.4
5.8
6.1
0.35
0.295
5.77
0.01
0.08

BN

* tj
1 v *% * " v V
,v;rv: V



• 		V %

BO
5.5
5.4
5.3
0.10
0.084
5.40
-0.45
-0.37

C
4.7
4.7
4.6
0.06
0.042
4.67
-1.35
-1.28

CA
6.7
5.5
6.0
0.60
0.506
6.07
0.38
0.45

CC


, v , : ¦ .

N *' 1 '
' ¦ ¦ '¦ •v
v.(-. , '!Svv
* ' > s 1

CE
5.7
6.3
5.7
0.35
0.253
5.90
0.17
0.25

CJ
6.5
7.1
6.5
0.35
0.253
6.70
1.16
1.24

CS
9.2

*W8A::>

0338 .
; ' 8.901'



CX




1 V
;4 ! -TO"*'
.i'.; o5 ? ;.'V- a-A

D


' fi, *¦
"/W $"•> .


' ' » \ y v« V S*. ' S$* .. ..
-T . AT<.


DB
6.2
6.4
6.0
0.20
0.169
6.20
0.54
0.62

DE
4.1
4.1_
4.2
0.06
0.042
4.1.3
-2.01
-i.94

DI


••t ,v >vv •


- ' ^ ^




ER








**¦
FE

'
. . <

. ..



•
FJ
¦


.

' /¦
' -?• v' '¦

•
FN


v, ' A ^
"1 '
- V"
A * '
',V'-¦

' ~
• =
No data submitted

TAG SYMBOLS

IT s Above control limit
La-
Insufficient data
X s
Determined to be an outlier
h Below control limit
	-v
-------
(r	
	^
ESD-LV Performance Evaluation: Uranium-Radium in Water, 18-Sep-1998 17 / 20
Radium-228







V
Lab



Exper.
Rng anal

Normalized deviation

Res. 1 Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
GN
4.8
4.9
5.0
0.10
0.084
4.90
-1.06
-0.99

GQ
10.1
9.8
9.4
0.35
0.295
9.77
4.96
5.03
X
HE
5.8
5.8
5.9
0.06
0.042
5.83
0.09
0.16

HK
5.0
4.8
5.3
0.25
0.211
5.03
-0.90
-0.82

HL
5.0
4.5
4.8
0.25
0.211
4.77
-1.23
-1.15

HP
4.9
4.1
4.5
0.40
0.338
4.50
-1.56
-1.48

I
7.0
7.6
5.9
0.86
0.717
6.83
1.33
1.40

ID
5.0
4.8
4.7
0.15
0.127
4.83
-1.15
-1.07

J








1 A /V
JE -









JG









JK









JN








-
JS
5.7
5.4
5.6
0.15
0.127
5.57
-0^24
-0.16

JX
7.3
6.3
4.5
1.42
1.345
6.03
0.34
0.41

JY
5.6
5.7
5.5
0.10
0.084
5.60
-0.20
-0.12

K
5.3
5.0
6.6
0.85
0.675
5.63
-0.16
-0.08

KH
5.9
5.8
5.8
0.06
0.042
5.83
0.09
0.16

KL
7.8
7.5
7.1
0.35
0.295
7.47
2.11
2.19

KT









L
5.8
5.4
6.2
0.40
0.338
5.80
0.05
0.12

LF









LH








¦ • "/- ¦
LZ








•V*
M









MF
5.7
6.0
6.8
0.57
0.464
6.17
0.50
0.58

MX
5.2
5.8
5.6
0.31
0.253
5.53
-0.28
-0.21

N
5.3
5.6
5.8
0.25
0.211
5.57
-0.24
-0.16

¦NAt









NH
4.3
5.3
4.6
0.51
0.422
4.73
-1.27
-1.20

NJ
6.1
5.0
6.3
0.70
0.548
5.80
0.05
0.12

NK;









NO









O
6.3
6.6
6.3
0.17
0.127
6.40
0.79
0.87

OB









OF









OS








-
OX









P
9.5
7.2
9.5
1.33
6.970'
|;73
3:68
3.76

PB-









PG









PQ









PW









PX









Q
5.5
6.7
7.2
0.87
0.717
6.47
0.87
0.95

• =
No data submitted

TAG SYMBOLS

IT s Above control limit
0 =
Vfc	
Insufficient data

x =
Determined to be an outlier
= Below control limit
-------
18/20 ESD-LV Performance Evaluation: Uranium-Radium in Water, 18-Sep-1998
Kadium-228
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
QM








. •
QQ








•
QU
6.5
6.4
6.9
0.26
0.211
6.60
1.04
1.11

QX








•
QY








•
QZ
5.2
4.8
4.8
0.23
0.169
4.93
-1.02
-0.95

R








•
RD
7.0
7.0
7.0
0.00
0.000
7.00
1.53
161

RG








, • "
RK








•
HP








•-
SB








• '
RX
5.4
5.8
5.6
0.20
0.169
5.60
-0.20
-0.12

RZ
5.7
5.6
5.6
0.06
0.042
5.63
-0.16
-0.08

S
5.4
5.6
5.3
0.15
0.127
5.43
-0.40
-0.33

SD
5.5
4.4
5.7
0.70
0.548
5.20
-0.69
-0.62

SF








- •.
SI
6.1
6.1
5.9
0.12
0.084
6.03
0.34
0.41

SL









SM
4.7
4.8
4.2
0.32
0.253
4.57
-1.48
-1.40

SO








•
ss
5.7
6.0
6.7
0.51
0.422
6.13
0.46
0.54

sx
7.3
6.7
6.7
0.35
0.253
6.90
1.41
1.48

T








•
TD
4.5
4.4
4.2
0.15
0.127
4.37
-1.72
-1.65

TN
5.8
5.9
7.1
0.72
0.548
6.27
0.63
0.70

TQ
5.6
5.3
5.5
0.15
0.127
5.47
-0.36
-0.29

U
4.7
4.7
4.7
0.00
0.000
4.70
-1.31
-1.24

UM









UP
6.0
7.1
7.1
0.64
0.464
6.73
1.20
1.28

UQ
6.7
7.0
7.1
0.21
0.169
6.93
1.45
1.53

UR









UZ








m -
VA








9
VH








•
VI
7.3
9.2
5.5
1.85
2.069
7.33
1.95
2.02

W








•
WC
1.4
LB:
2;2.
0.44
P;338
1:70
-5.02
-4.95
X. -
WG








\ .
WH
5.3
5.6
5.8
0.25
0.21.1
5.57
-0.24
-0.16

WI








•
WJ








•
WO
5.6
3.7
4.0
1.02
0.802
4.43
-1.64
-1.57

WR








#
ws








•
• =
0 =
No data submitted
Insufficient data
X =
TAG SYMBOLS
Determined to be an outlier
ft = Above control limit
= Below control limit

-------
ESD-LV Performance Evaluation: Uranium-Radium in Water, 18-Sep-1998 19/20
Radium-228
Exper. Rng anal	Normalized deviation
	^es- 1	Res. 2	Res. 3	Sigma (R + SR) Average (grand-avg) (known) Tag
wx








, •
X
1.7
2.2
1.7
0.29
0.211
. 1.87
-4.82
-4.74
X
XA








•
XC








•
XD








, «
XI
5.6
6/7
6.1
0.55
0.464
6.13
0.46
0.54

XK









XL
5.3
5.4
5.6
0.15
0.127
5.43
-0.40
-0.33

XM
7.0
6.0
4.4
1.31
1.185
5.80
0.05
0.12

XQ
XS	!
XT	;
Y
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
1.70
X
WC
5.47

TQ
6.17

MF
1.87
X
X
5.53

MX
6.17

E
2.50
X
AK
5.57

WH
6.20

EL
4.13

DE
5.57

N
6.20

DB
4.37

TD
5.57

JS
6.27

TN
4.43

WO
5.60

JY
6.40

O
4.43

AW
5.60

RX
6.43

BK
4.50

HP
5.63

RZ
6.43

AF
4.57

SM
5.63

K
6.47

Q
4.67

C
5.67

AJ
6.50

DZ
4.70

u
5.77

BM
6.60

QU
4.70

AE
5.80

XM
6.67

DT
4.73

EB
5.80

NJ
6.70

CJ
4.73

NH
5.80

L
6.73

UP
4.77

HL
5.83

KH
6.77

BB
4.83

ID
5.83

HE
6.83

I
4.87

BA
5.90

EO
6.90

sx
4.87

AL
5.90

CE
6.93

UQ
4.90

GN
6.00

BC
7.00

RD
4.93

QZ
6.03

SI
7.33

VI
5.03

HK
6.03

JX
7.47

KL
5.20

SD
6.07

CA
7.63

A
5.40

BO
6.13

XI
8.73
X
P
5.43

XL
6.13

ss
8.90
X
cs
5.43

S
6.13

BH
9.77
X
GQ
• = No data submitted TAG SYMBOLS IT s Above control limit
0 = Insufficient data	x s Determined to be an outlier	II s Below control limit
-------
20 / 20 ESD-LV Performance Evaluation: Uranium-Radium in Water, 18-Sep-1998
Radium-228
% responding labs	Frequency distribution
10-

-6	-4	-2	0	+2	+4	+6
Normalized deviation of the mean from the known value
% responding labs	Frequency distribution
10.	JL		
-4	-2	0	+2	+4
Normalized deviation of the mean from the grand average
-------
United States	Office of Research and	EPA/600/R-99/018
Environmental Protection	Development	February 1999
Agency	Washington, DC 20460
«vEPA Blind-A Performance
Evaluation Study
A Statistical Evaluation of
the October 20, 1998 Data
-------
Blind-A
Performance Evaluation Study
October 20, 1998
Environmental Protection Agency
National Exposure Research Laboratory
Environmental Sciences Division
Las Vegas, Nevada
-------
A
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY

OFFICE OF RESEARCH AND DEVELOPMENT
NATIONAL EXPOSURE RESEARCH LABORATORY
ENVIRONMENTAL SCIENCES DIVISION-US VEGAS
P.O. BOX 93478
LAS VEGAS, NEVADA 89193-3478
(702/798-2100)
Dear Participant,
Enclosed are the results of the Environmental Sciences Division (ESD-LV)
Performance Evaluation Study for Blind-A; October 20, 1998.
The known value for each analysis was determined by gravimetric methods,
checked by chemical analyses performed by ESD-LV's Radiochemistry Laboratory,
and compared to the participating laboratories' grand average.
The expected precision, determined by the known value, was taken from
'Table 3. Laboratory Precision: One Standard Deviation Values and Control Limits
for Various Analyses", which is based on data accumulated over the years by the
Performance Evaluation Program, and can be found In the Environmental Radioactivity
Performance Evaluation Studies Program and Radioactive Standards Distribution
Program information brochure.
Please take a few minutes to review this report and the analytical data your
laboratory submitted to us. If there are any apparent discrepancies, please notify us
immediately.
We encourage you to make use of the computer-automated data-entry system
that has been In place for some time now. As the number of participants increases,
and it becomes unrealistic for us to receive results by mall or FAX, the computer
system will be our only avenue for accepting data.
If you have any questions or comments, please send a message via the data-entry
system or contact Stephen Pia at 702/798-2102 or Patricia Honsa at 702/798-2141.
Stephen Pia
Team Leader
RADQA Program
Enclosure
-------
NOTICE
This material has been funded wholly by
the U.S. Environmental Protection Agency.
It has been subjected to the Agency's review,
and has been approved for publication as
an EPA document.
-------
ESD-LV Performance Evaluation: Blind-A, 20-Oct-1998	1/28
The following pages consist of separate sections for each of the nuclides in this study with four
parts per section. After the first, each part is separated from the next by a new page or a thick
horizontal bar. The first page of each section is a statistical summary for the nuclide and starts
with a statement of the known value, the control limits, and the warning limits.
The warning limits are placed at two normalized standard deviations above and below the
known value and the control limits are three normalized standard deviations above and below
the known value. If you keep control charts, these values will be useful for anticipating problems
with the accuracy of your analytical methods.
The coin shaped pie chart at the top of the summary page shows the fate of all the samples
sent out in number and percentage terms. The pie chart starts at the top and rotates clockwise.
The first sector represents those participants who submitted analytical results within both the
warning and control limits. The next sector represents those who are in the warning region but
not out of control. The third sector represents those who are out of control, but have passed
the outlier test. The fourth sector represents those who have failed the outlier test. The last
sector represents those participants who have failed to respond properly. This is the case if no
analytical results were returned, or less than three determinations were reported, or if the results
were received too late. The reeding on the edge of the coin is spaced at one percent intervals, and
the sector shading becomes darker as the data reliability decreases. Sectors with zero width are
not shown.
The table in the center shows a number of statistical quantities calculated from the submitted
data based on the mean and median values in relation to the known value, both before and after
outlier removal. The lower pie chart uses the same construction as the upper chart and shows
the distribution of properly submitted data in terms of deviation from the known value divided
into sectors representing one, two, three, and greater than three normalized standard deviations.
The second part is an alphabetical listing, in lab-code order, of submitted data and severed
calculated quantities. An entry that is shaded has been rejected because of one of the reasons
listed above or failure of the outlier test. The fifth and sixth columns are a measure of laboratory
precision. The Range analysis is a normalized value that you may use to keep precision control
charts. The eighth and ninth columns are the differences from the mean of all non-outliers and
from the known value, respectively. If this value is between 2.0 and 3.0, your analytical process
precision is in the warning zone; if it exceeds 3.0 it is out of control. A tag symbol may appear in
the last column. Each page with tags has a symbol definition summary at the bottom. If there is
no tag symbol, the data is within the control limits, but it may be in the warning zone.
The third part is a three-column listing of result average, tag symbol, and lab-code in average
order excluding those labs not responding properly. In this order, all outliers and out-of-control
results appear at the top or bottom of the list.
The last part is two bar chart displays showing frequency distributions of responding
participants. The first chart places the known value at the center and a bar at each 0.2 unit of
expected precision. The second chart places the mean of the reported measurements at the center
and a bar at each 0.2 unit of standard deviation. In both cases, a bar includes those results within
0.1 unit up to the maximum of six. Any results more than six units from the center value are
shown cumulatively by a shaded bar one past the sixth unit. If the central tendency of the known
value distribution falls away from the center, an error in accuracy is indicated. If the distribution
is broad, poor precision is indicated. The mean value distribution is similar but uses the average
and standard deviation of reported results as its basis.
-------
2/28
ESD-LV Performance Evaluation: Blind-A, 20-Oct-1998
y
The Range Analysis{R + SR) is calculated from the range, mean range and standard error of
the range values. The range is the difference between the maximum and minimum results for the
laboratory. The mean range is calculated by multiplying the expected precision by 1.693(for three
results). The standard error of the range is calculated by multiplying the mean range by 2.575(for
three results), subtracting the mean range from this product, and dividing the result by 3. If the
range is greater than the mean range, then the range analysis is calculated by subtracting the
mean range from the range, dividing the result by the standard error of the range and adding 1.
If the mean range is greater than or equal to the range, then the range analysis is calculated by
dividing the range by the mean range.
The normalized deviation of the mean from the grand average is calculated from the deviation
of the mean from the grand average and the standard error of the mean values. The deviation of
the mean from the grand average is calculated by subtracting the grand average from the
average of the laboratory's three results. The standard error of the mean is calculated by
dividing the expected precision by the square root of 3(the number of results). The normalized
deviation of the mean from the grand average is calculated by dividing the deviation of the mean
from the grand average by the standard error of the mean.
The normalized deviation of the mean from the known value is calculated from the deviation of
the mean from the known value and the standard error of the mean values. The deviation of the
mean from the known value is calculated by subtracting the known value from the average of the
laboratory's three results. The standard error of the mean is calculated by dividing the expected
precision by the square root of 3{the number of results). The normalized deviation of the mean
from the known value is calculated by dividing the deviation of the mean from the known value by
the standard error of the mean.
A complete explanation of the statistical calculations involved in the report may be found in
the Environmental Radioactivity Performance Evaluation Studies Program information brochure
[Draft Revision of EPA-600/4-81-004], available from Patricia Honsa, ESD-LV, 702/798-2141.
-------
ESD-LV Performance Evaluation: Blind-A, 20-Oct-1998
3/28
Gross Alpha	Statistical Summary	175 Participants
The known value of this nuclide is 30.1 pCi/1 with an expected precision of 7.5; the control limits
are 17.1 to 43.1; the warning regions are 17.1 to 21.4 and 38.8 to 43.1
53(30.3 %) Failed to respond ,
106(60.6 %) Within all limits
5(2.9 %) Outliers '
1(0.6 %) Out of control *
but not an outlier
Statistic
Respondents
10(5,7 %) In warning zone
but within control
Non-outliers
Mean
Std. Dev.
Variance
% Coef. of Var.
% deviation of mean from known value
Norm. dev. of mean from known value
Median
% deviation of median, from known value
Norm. dev. of median from known value
34.81
Grand Avg 30.01
33.08
5.15
1094.21
26.55
95.02
17.17
15.66
-0.31
0.14
-0.02
29.33
29.00
-2.55
-3.65
-0.02
-0.21
-------
jf
4/28	ESD-LV Performance Evaluation: Blind-A, 20-Oct-1998
f—		~ ¦¦¦ -	¦ ¦	..	I	- ¦ ¦ ¦	— ¦ I—'-. ' :	— ¦ — —
Gross Alpha
Lab
Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
A
29.8
28.1
29.0
0.85
0.134
28.97
-0.24
-0.26
AE
26.9
28.7
28.4
0.96
0.142
28.00
-0.46
-0.48
AF
33.5
31.2
33.9
1.46
0.213
32.87
0.66
0.64
AH
38.1
37.3
28.9
5.10
0.725
34.77
1.10
1.08
AJ
25.9
23.9
30.0
3.11
0.480
26.60
-0.79
-0.81
AK
30.2
29.7
30.9
0.60
0.095
30.27
0.06
0.04
AL
33.5
28.4
31.9
2.61
0.402
31.27
0.29
0.27
'"•fT --W
;'APj:





J*. •
AR
oo.t
30.4
ao.y
U.25
0.039
35.67
1.31
1.29
AU
35.0
33.4
34.0
0.81
0.126
34.13
0.95
0.93
AW
21.3
24.3
24.9
1.93
0.284
23.50
-1.50
-1.52
AZ
26.3
27.8
27.4
0.78
0.118
27.17
-0.66
-0.68
BA
31.1
30.9
28.8
1.27
0.181
30.27
0.06
0.04
BB
33.4
35.2
33.2
1.10
0.158
33.93
0.91
0.89
BC
36.1
37.4
35.7
0.89
0.134
36.40
1.48
1.45
BG







-V. \
BH
27.5
24.9
26.8
1.35
0.205
26.40
-0.83
-0.85
BK
38.0
32.0
35.0
3.00
0.473
35.00
1.15
L13
3BL








BM
32.4
30.9
33.5
1.31
0.205
32.27
0.52
0.50
BN
28.0
29.3
29.0
0.68
0.102
28.77
-0.29
-0.31
BO
37.3
38.7
40.3
1.50
0.236
38.77
2.02
2.00
BS
34.0
33.9
32.8
0.67
0.095
33.57
0.82
0.80
C
25.9
27.1
27.7
0.92
0.142
26.90
-0.72
-0.74
CA
26.6
24.6
25.2
1.03
0.158
25.47
-1.05
-1.07
cc







tV .
CE
22.3
17.0
23.9
3.61
0.543
21.07
-2.06
-2.09
CJ
23.0
19.0
23.0
2.31
0.315
21.67
-1.93
-1.95
CO








CP
29.8
26.4
25.7
2.19
0.323
27-30
-0.62
-0.65
|GS-
>253:A,
i24&9 "
252J5 •

|&488-<

¦lip?
50^98 :x:
' cx"
28.6
28?0~
27.0
0.81
0126
'27.87
To.49
-0.52
D
30.6
31.4
33.0
1.22
0.189
31.67
0.38
0.36
DB
28.5
29.0
29.5
0.50
0.079
29.00
-0.23
-0.25
DD
23.7
25.8
24.0
1.14
0.165
24.50
-1.27
-1.29
DE
32.5
32.9
33.5
0.50
0.079
32.97
0.68
0.66
DI







• •
mo








DT
29.2
26.1
27.2
1.57
0.244
27.50
-0.58
-0.60
DZ
25.9
25.4
25.4
0.29
0.039
25.57
-1.03
-1.05
E
28.4
28.4
27.3
0.64
0.087
28.03
0.46
-0.48
•eb;
60,0
52:5


|gi97j

Wn
4:95'* X :•








V: ;
EO
29.0
30.0
33.0
2.08
0.315
30.67
0.15
0.13
ER

...


r-'

*v ¦; wv." v" j"."*
... ™. .
• s No data submitted TAG SYMBOLS ff e Above control limit
0 s Insufficient data	x = Determined to be an outlier	-II S Below control limit
-------
((	








	^
k.

ESD-LV Performance Evaluation: Blind-A, 20-Oct-1998
5/28
Gross Alpha








Lab
Res. 1


Exper.
Rng anal

Normalized deviation

Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
EV
27.4
23.3
27.2
2.31
0.323
25.97
-0.93
-0.95

EX
31.0
25.3
27.3
2.89
0.449
27.87
-0.49
-0.52

<\v. .1? >








V-j
FF
27.8
26.2
25.8
1.06
0.158
26.60
-0.79
-0.81

FJ
27.8
26.9
27.8
0.52
0.071
27.50
-0.58
-0.60

^FL
30.0
22.0
27.0
4.04
0.630
26.33
-0.85
-0.87


111®
M&J
Hi

in

mis
MM
m









M ?
GQ
31.7
31.8
31.6
0.10
0.016
31.70
0.39
0.37

GZ
43.6
40.9
44.5
1.87
0.284
43.00
3.00
2.98

HI
25.9
21.9
21.9
2.31
0.315
23.23
-1.56
-1.59

HK
41.4
39.9
39.6
0.96
0.142
40.30
2.38
2.36

HL
23.2
26.3
26.6
1.88
0.268
25.37
-1.07
-1.09

HP
25.1
29.5
24.2
2.84
0.417
26.27
-0.86
-0.89

I
24.9
24.4
27.1
1.44
0.213
25.47
-1.05
-1.07

ID
28.6
348
32,8
3.16
0.488
32.07
0.48
0.45

IEF








Si*;
•ife








i&i
JE
30.6
29.3
29.5
0.70
0.102
29.80
-0.05
-0.07

;-s*/' -» &









-¦MT-:
;• v+ii,









jMV








^ ¦
|my:









3n^i








<. -
NA
35.0
35.0
32.0
1.73
0.236
34.00
0.92
0.90
l
NH
18.0
26.0
23.0
4.04
0.630
22.33
-1.77
-1.79

NJ
31.3
30.8
31.9
0.55
0.087
31.33
0.31
0.28

• =
No data submitted

TAG SYMBOLS

ft = Above control limit
0 =
V
Insufficient data
x =
Determined to be an outlier
H s Below control limit
-------
	








——^
6/28
V.
ESD-LV Performance Evaluation: Blind-A, 20-Oct-1998


Gross Alpha








Lab
Res. 1


Exper.
Rng anal

Normalized deviation

Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg) (known) Tag
'WS







" ' ' ^ - --
• ^ V
NO








y • * ''S
0
31.7
34.8
36.0
2.22
0.339
34.17
0.96
0.94

(iy&k








*
OF
34.4
33.0
28.1
3.31
0.496
31.83
0.42
0.40











OS
28.0
27.0
29.0
1.00
0.158
28.00
-0.46
-0.48

'-op









p
46.3
44.6
38.4
4.16
0.622
43.10
3.02
3.00

PB








%. -
PD









PG
42.3
42.3
43.4
0.64
0.087
42.67
2.92
2.90

PM
27.5
29.2
29.1
0.95
0.134
28.60
-0.32
-0.35

pw'J








¦ ;
Q
29.6
32.9
32.5
1.80
0.260
31.67
0.38
0.36

QM








»
QP
30.8
27.9
31.0
1.73
0.244
29.90
-0.02
-0.05

QQ
31.3
31.6
31.6
0.17
0.024
31.50
0.35
0.32

QT
25.0
28.1
27.8
1.71
0.244
26.97
-0.70
-0.72

QU
22.5
22.9
23.8
0.67
0.102
23.07
-1.60
-1.62

QW
22.9
22.3
22.3
0.35
0.047
22.50
-1.73
-1.76

QX
23.6
23.5
23.7
0.10
0.016
23.60
-1.48
-1.50

QZ
26.8
27.1
25.2
1.02
0.150
26.37
-0.84
-0.86

KB
29.7
29.3
30.3
0.50
0.079
29.77
-0.06
-0.08

RD
24.2
30.2
26.7
3.01
0.473
27.03
-0.69
-0.71

RG








' V
HI
34.1
34.2
30.0
2.40
0.331
32.77
0.64
0.62

JRK
314-9:
318:9';
WW
5£05;
"0:638 ;
3UM:
65:79"
65^76 v
X
RP








J %
RR









-RIK








' * S
i
RZ
37.4
37.4
37.5
0.06
0.008
37.43
1.72
1.69

S
36.2
37.1
36.7
0.45
0.071
36.67
1.54
1.52

SD
32.0
31.5
33.6
1.10
0.165
32.37
0.55
0.52

SF
31.0
29.2
31.0
1.04
0.142
30.40
0.09
0.07

SG
30.7
28.5
27.7
1.55
0.236
28.97
-0.24
-0.26

SI
27.2
28.9
27.6
0.89
0.134
27.90
-0.49
-0.51

SL
41.6
46.6
45.1
2.57
0.394
44.43
3.33
3.31
fr
SM
32.4
28.8
34.1
2.71
0.417
31.77
0.41
0.38

SN
30.9
32.5
31.1
0.87
0.126
31.50
0.35
0.32

SO
24.2
25.5
25.4
0.72
0102
25.03
-1.15
-117

SR









ss
33.7
26.3
32.1
3.89
0.583
30.70
0.16
0.14

sx
28.7
27.3
28.5
0.76
0.110
28.17
-0.42
-0.45

T
25.2
22.5
22.9
1.46
0.213
23.53
-1.49
-1.52


SJo data submitted

TAG SYMBOLS

1T = Above control limit
0 =
Insufficient data
X s=
Determined to be an outlier
It = Below control limit
					'S
-------
ESD-LV Performance Evaluation: Blind-A, 20-Oct-1998
7/28
Gross Alpha
Lab Res. 1
Exper. Rug anal	Normalized deviation
Res. 2 Rea. 3 Sigma (R + SR) Average (grand-avg) (known) Tag
TD
44.8
35.0
37.8
5.05
0.772
39.20
2.12
2.10
Average
Tag_
Data sorted by Laboratory Average
Lab
Average
Tag.
Lab
Average
Tag
Lab
21.07
21.67
CE
CJ
22.33
22.40
NH
TN
22.50
22.97
QW
XN
• s No data submitted
0 s Insufficient data
TAG SYMBOLS
x h Determined to be an outlier
ft = Above control limit
^ s Below control limit
-------
(t	^
8/28	ESD-LV Performance Evaluation: Blind-A, 20-Oct-1998
Gross Alpha
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
23.07

QU
27.80

VO
32.07

ID
23.23

HI
27.87

EX
32.20

JQ
23.50

AW
27.87

CX
32.27

BM
23.53

T
27.90

SI
32.37

SD
23.60

QX
28.00

OS
32.67

UP
23.83

TY
28.00

AE
32.77

RI
24.03

VH
28.03

E
32.87

AF
24.50

DD
28.17

SX
32.97

DE
24.80

KE
28.30

VI
33.30

TQ
25.00

XI
28.37

XM
33.57

BS
25.03

SO
28.60

PM
33.93

BB
25.33

LF
28.77

BN
34.00

NA
25.37

XL
28.97

SG
34.13

AU
25.37

HL
28.97

A
34.17

O
25.47

I
29.00

DB
34.77

AH
25.47

CA
29.17

XF
35.00

BK
25.53

JS
29.33

U
35.57

VJ
25.57

DZ
29.33

JM
35.67

AR
25.97

EV
29.40

K
35.83

WR
26.03

WW
29.77

KB
36.40

BC
26.27

HP
29.77

MF
36.67

S
26.33

FL
29.80

JE
37.43

RZ
26.37

QZ
29.90

QP
38.13

JN
26.40

BH
30.27

BA
38.77

BO
26.50

KT
30.27

AK
38.90

W
26.60

FF
30.40

X
38.90

KX
26.60

AJ
30.40

SF
39.20

TD
26.77

UQ
30.67

EO
39.97

VT
26.87

L
30.70

ss
40.30

HK
26.90

C
31.27

AL
42.23

LL
26.97

QT
31.33

NJ
42.67

PG
27.03

RD
31.50

SN
43.00

GZ
27.17

AZ
31.50

QQ
43.10

P
27.20

WH
31.67

Q
44.43
it
SL
27.30

CP
31.67

LR
51.53
X
EB
27.37

WE
31.67

D
57.67
X
FN
27.50

FJ
31.70

GQ
61.63
X
WO
27.50

DT
31.77

SM
250.83
X
CS



31.83

OF
314.87
X
RK
• = No data submitted	TAG SYMBOLS	ft = Above control limit
0 = Insufficient data	x s Determined to be an outlier	U = Below control limit
^		jj
-------
fi- ¦	1	11	—TT--	"	...	^
ESD-LV Performance Evaluation; Btind-A, 20-Oct-1898	9/28
Gtoss Alpha
% responding labs		Frequency distribution 		
104
o
¦! ¦	r
T • 1 '1	1	I ' T-~~~T	T	T	T *T 	1	T	I ™
-6-4-2	0	+2	+4	+6
Normalized deviation of the mean from the Itnown value
% responding labs Frequency distribution
10+			
0
.¦y„ m.,
-6	-4	-2	0	+2	+4	46
Normalized deviation of the mean from the grand average
-------
ESD-LV Performance Evaluation; Blind-A, 20-Oct-1998
10/28
Radiu.m-226	Statistical Summary	175 Participants
The known value of thi3 nuclide is 4.5 pCi/1 with an expected precision of 0.7; the control limits
are 3.3 to 6.7; the warning regions are 3.3 to 3.7 and 5.3 to 5.7
91 (52.0 %) Failed to respond
3(1.7 %) Outliers
13(7.4 %) Out of control
but not en outlier
Statistic
62(35.4 %) Within all limits
Respondents
6(3.4 %) In warning zone
but wtthln control
Non-outliers
Mean
4.71
Grand Avg 4.53
Std. Dev.
1.41
0.98
Variance
1.98
0.97
% Coef. of Var.
29.90
21.72
% deviation of mean from known value
4.64
0.57
Norm. dev. of mean from known value
0.15
0.03
Median
4.47
4.40
% deviation of median from known value
-0.74
-2.22
Norm. dev. of median from known value
-0.02
-0.10
16(19.0 %) More than 3 norm. S.D
¦
6(7.1 %) Between 2 and 3 norm. S.D.*
.42(50.0 %) Within 1 norm. S.D.
of known value
-20(23.8 %) Between 1 and 2 norm. S.D.
-------
Mil/28

ESD-LV Performance Evaluation: Blind-A, 20-Oefc-1998

1
Radium-228







Lab
Res. 1

Exper.
Rnganal

Normalized deviation

Res. 2 Res. 3
Sigma
(R + SR)
Average
(grand-avg) (known) Tag
A
5.1
4.8 4.5
0.30
0.506
4.80
0.68
0.74

AE
4.0
4.1 4.1
0.06
0.084
4.07
-1.14
-1.07

AF
4.2
4.5 4.1
0.21
0.338
_ 4.27^
-0.64
-0.58

"J.--
:AH>f; ¦.
^®B5BBS$psr

•!.X^3SSJjT3SS»iFwrc


w$
-~i S*"v^ yr;^
AJ
8.3
7.4 6.3
1.00
2.310
7.33
6.95 ""
7.01
ff
AK
4.3
5.9 4.1
0.99
1.988
4.77
0.60
0.66

AL
4.0
4.2 5.2
0.64
1.024
4.47
-0.15
-0.08


¦' i£ \viwHi1 i# •.¦

^Sg§Sk
=T^v1, .trx&iV-zs
'^- iSrT'S^
¦W.5-"C -r« -cv.-
AU	
. 16' ....
1.6 1.6
0.00
0,000'
1.60
-7.24
' -7.18
i '
AW
4.4
4.5 4.6
0.10
0.169
4.50
-0.06
0.00

AZ
4.2
4.5 4.5
0.17
0.253
4.40
-0.31
-0.25

BA
4.0
4.2 3.4
0.42
0.675
3.87
-1,63
-1.57

BB
5.8
6.7 7.1
0.67
1.185
6.53
4.97
5.03
ft
BC
4.5
4.6 4.6
0.15
0.253
4,63
0.27
0.33

IbgF^
llilfli
','¦ ", ¦¦ ¦ ffs' •¦• ?,. - ,%¦f'p-Fr.z
/ A'""i ¦•. /,'¦ ¦¦ • -. -',<• " < -ft-'" > ^yv„v^-t/» n .• , Jt" .J?/'C '¦! \
^Zxbii \£gf&Wr-j *-ir':

p^tm^srrm
;-j^> ¦•" ' "•

BH
" 4.6
4.0 4.2
0.31
0.506
4.27
-0.64
-0.68

BK
4.6
4.7 4.6
0.06
0.084
4.63
0.27
1)^33


?,V^p5J?'^^:xt-T!5v'5?-.





BM
4.4
4.4 ^ 4.4
0.00
0.000
4.40
-0.31
-0,25

bn
2.6
3.5 2.9
0.46
0.769
3.00
-3.77
-3.71

bo
4.4
4.4 4.4
0.00
0.000
4.40
-0.31
-0.25


-" ' ¦'" -J1 J:1*" .\;--1 "..t \.-"J i . :..



c
6.0
4.8 4.7
0.15
0.253
4.83
0.76
0.82

CA
4.2
4.4 4.1
0.15
» 9;253
4.23
-0.72
-0.66



-.'I'-*:V'- ¦ 0;V
&?s£>3»£v*?: S





CE
5.0
,.-. 41 - -.... g-g
0.59
0.928'
4.33
-0.48
-0.41

CJ
4.7
4.9 4.4
0.25
0.422
4.67
0.35
0.41

¦'&6>;;
a?p.*> •>
' rk'W?'*S0$%.

. ffiig-e
-
.Vs>vw
rrX-si
f.. J.,
*
• X
cs
4.1
4.0 4.6
0.32
*"' 0.506
4.23
-0.72
-0.66


f&s$£z0$titi
* ?.?* v&$ »
SPii&SiaSSiSSisyS#*
xsaMS3te»" ^

iC^PR^sa?'
--" 7-.-.
2^msii;smz
.V?, T^*5-': ? \ ¦• j-'-1-* :v
DE
4.6
4.6 4.7
0.06
0.084
4.63
0.27
0.33

ui
¦sT'-'-r,-

- r .

*?K" •"£?!?.

.• <¦ •.. '.. •-££¦ ¦ -j
'X-v-,-
'k-* r }'"
DO
?.<. Jv^V'5'^"--! '"1;.
, * _ •-*-
' J 0\ *
- - -



^I'V;"

BT
39
4.0 4.5
0 32
0.506
4,13
-0.97
-0.91

DZ
50
4.0 4.2
0.53
0.844
4.40
-0.31
-0.25

£
4.7
4.4 4.0
0.35
0.591
4.37
-0.39
-0.33

EB
4.0
3.8 3.9
0.10
0.169
3.90
-1.55
-1.48

EL
5.0
6.1 5.3
0.15
0.253
5.13
1.50
1.57

EO
4.3
4.3 4.3
0.00
0.000
4.30
-0.56
-0.49

•jSBtgJH
T ¦5-'
a"--':'.,' -f s;.^

-v 1-v
?> ^>Vr. is"'"?? f ~v

. ¦ : ^5

* ,*¦'$&& V->f - r..^S^>
^ '« £;< i jjJ. 'v5- ••", '-, V V'-
v'- - 'f/' v
5->'- c.-'Ky?,?-
V C>-=V- - -j- '^S'/ ¦*



• s No data submitted
TAG SYMBOLS

= Above control limit
0 s Insufficient data x s
Determined to be an outlier
it- s Below control limit
-------
ESD-LV Performance Evaluation: Blind-A, 20-Oct-1998	12/28
Radimn-226
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Bug anal
0.56
-0.49

Igz!








- "PI
HI








:^SS
Hfi
4,3
4.8
4.5
0.25
0.422
4.53
0.02
0.08

HL
3.7
3.9
3.6
0.15
0.253
3.73
-1.96
-1.90

HP
5.9
5.5
4.9
0.50
0.844
5.43
2.25
2.31

I
4.0
4.1
3.9
0.10
0.16 9
4.00
•1.30
-1.24

ID
4.7
3.0
4.5
0.93
1.828
4.07
-1.14
-1.07

•tu









"fe









•JE
5.9
4.5
4.0
0.98
2.149
4.80
0.68
0.74

Pol'








"¦if
JTVI
2.2
2.3
2.3
0.06
0.084
2.27
-5.59
-5.53
i
•¦¦ -.iy .. •w-j'


















"t-to
JS
4.8
4.9
4.6
0.15
0.253
4.77
0.60
0.66

JX
4.7
4.7
4.4
0.17
0.253
4.60
018
0.25











K
incj
4.6
4.0
4.9
0.46
0,759
4.50
-0.06
U.0D

pCF;









KX;








fy'A.:3gw
L
3.8
4.4
3.5
0.46
0.759
3.90
-1.55
-1.48

3ir









iu|f




























iSt
M
3.0
3.4
3.6
0.31
0.606
3.33
-2.95
-2.89

MF
3.9
4.0
4.1
0.10
0.169
4.00
-1.30
-1.24

•mp!








'VA;.
•MTX








>5:









sftli
Mifi
S. ••»








*••••••;
• /•
'N.U/'








?y-C
-------
f=	








	s
13/28
I

ESD-LY Performance Evaluation: Blind-A, 20-Oct-1998

, - ... J
[ Radium-226








Lab



Exper.
Rnganal

Normalized deviation

Res. 1
Res. 2
Res. 3
Sigma
-------
		











	^


ESD-LV Performance Evaluation: Blind-A, 20-Oct-1998
14/28
Radium.226










%






Exper.
Rng anal


Normalized deviation

Lab Rea. 1
Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
TD
4.4

4.5
4.5
0.06
0.084
4.47
-0.15
-0.08













TN
4.1

4.7
4.4
0.30
0.506
4.40
-0.31
-0.25

TQ
4.0

4.5
4.3
0.25
0.422
4.27
-0.64
-0.58














u*"
4.1

3.8
3.9
O.lfi
0.253
3.93
-1.47
-1.40














Mm











¦' \ A'h
UP
6.4

5.4

4.4
0.58
0.844
5.07
1.34
1.40

UQ
4.1

4.3

4.2
0.10
0.169
4.20
-0.81
-0.74














VA
6.1

6.0

6.2
0.10
0.169
6.10
3.90
3.96
it
• ••< i 1WS'
¦;Vq-











IP!
:VBL[



:lb:ou

mm

MX


VI
5.6

5.1

5.7
0.32
0.506
5.47"
2.33
2.39

5VJ?
¦mi











rr 5 a?














6.7;
+ >>. S+<




:1;65>
l£23gj|

$7C
8;83:
¦*v
w
3.0

4.2

4.1
0.67
1.024
3.77
-1.88
-1.81













i»5-i
WH
4.0

4.6

4.5
0.32
0.506
4.37
-0.39
-0.33

WO
6.2

6.2

6.0
0.12
0.169
6.13
3.98
4.04

SwkT
¦ <,& /•>-/












:ym\












X
4.8

6.0

4.7
0.72
1.185
5.17
1.59
1.65

XA
4.2

4.6

5.8
0.83
1.667
4.87
0.84
0.91

yv" -w"V*
























t§
xXFi












Jaf'
7.3

4.6

5.9
1.35
3.435
5.93
3.48
3.55













S3
mm












XL
4.6

4.8

5.0
0.20
0.338
4.80
0.68
0.74

XM
5.5

5.2

4.8
0.35
0.591
5.17
1.59
1.65

;?XNl











i.^k












v 'V-.
'¦C*
?£q1
¦'XT/;,:
























,/y











>: :v"<
i •




Data sorted by Laboratory Average



Average

Tag

Lab
Average
Tag
Lab
Average Tag
Lab
1.60



AU

2.27
11
JM

2.93
U
QM
2.17



QT

2.90
U
P

3.00

BN
• 2 No data submitted	TAG SYMBOLS	ft = Above control limit
0 s Insufficient data 	x s Determined to be an outlier	& = Below control limit Jj
-------
15 / 28	ESD-LV Performance Evaluation: Blind-A, 20-Oct>1998
Radium-226
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag Lab
Average
Tag
Lab
3.33

M
4.30
EO
4.80

A
3.43

Q
4.33
CE
4.83

C
3.73

RK
4.37
WH
4.87

XA
3.73

HL
4.37
E
4.90

DB
3.77

W
4.40
TN
5.03

RD
3.87

BA
4.40
DZ
5.07

UP
3.90

L
4.40
BO
5.07

QQ
3.90

EB
4.40
BM
5.13

EL
3.93

U
4.40
AZ
5.17

XM
4.00

SD
4.47
TD
5.17

X
4.00

MF
4.47
AL
5.17

NJ
4.00

I
4.50
K
5.27

S
4.07

ID
4.50
AW
5.43

FN
4.07

AE
4.53
HK
5.43

HP
4.13

DT
4.57
SS
5.47

VI
4.17

NH
4.60
JX
5.50

QU
4.20

UQ
4.63
DE
5.93
ft
XI
4.20

SX
4.63
BK
6.10

VA
4.23

cs
4.63
BC
6.13
ft
WO
4.23

CA
4.67
CJ
6.53
ft
BB
4.23

RZ
4.73
T
7.03
ft
PG
4.27

TQ
4.77
O
7.33
ft
AJ
4.27

BH
4.77
JS
7.60
ft
SM
4.27

AF
4.77
AK
8.07
X
VT
4.30

GQ
4.80
XL
8.53
X
VH
4.30

QZ
4.80
JE
12.37
X
SI
% responding labs

Frequenty distribution



¦!- I - y T
-4	-2	0	+2	+4
Normalized deviation of the mean from the known value
% responding labs	Frequency distribution
Normalized deviation of the mean from the grand average
• = No data submitted TAG SYMBOLS ft = Above control limit
[ 0 s Insufficient data	x = Determined to be an outlier	H a Below control limit
-------
ESD-LV Performance Evaluation: Blind-A, 20-Oct-1998
16/28
Radium-228	Statistical Summary	175 Participants
The known value of this nuclide is 1.5 pCi/1 with an expected precision of 0.4; the control limits
are 0.8 to 2.2; the warning regions axe 0.8 to 1.0 and 2.0 to 2.2
102(58,3 %) Failed to respond
7(4.0 %) Outliers
16(9.1 %) Out of control
but not an outlier
Statistic
36(20.6 %) Within all limits
Respondents
* 14(8.0 %) In warning zone
but within control
Non-outliers
Mean
2.48
Grand Avg 1.92
Std. Dev.
2.18
0.51
Variance
4.77
0.26
% Coef. of Var.
87.90
26.50
% deviation of mean from known value
€5.66
27.85
Norm. dev. of mean from known value
0.45
0.82
Median
1.93
1.88
% deviation of median from known value
28.89
25.56
Norm. dev. of median from known value
0.20
0.75
23(31.5 %) More than 3 norm. S.D. •
14(19.2Between 2 and 3 norm. S
17(23.3 %) Within 1 norm. S.D.
of Known value
19(26.0 %) Between 1 and 2 norm. S.D.
-------
at	
17/28
V
ESD-LV Performance Evaluation: Blind-A, 20-Oct-1998

	=5\
i
r ——
Radium-228







\
Lab
Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
A
0.9
1.7
2.9
1.01
4.721
1.83
-0.37
1.44

AE
1.3
1.8
2.0
0.36
1.064
1.70
-0.94
0.87

AF
1.8
1.8
2.2
0.23
0.591
1.93
0.07
1.88

"Ahi
{







* '>
AJ
2.6
1.6
2.0
0.50
1.908
2.07
0.65
2.45

AK
1.9
1.6
1.8
0.15
0.443
1.77
-0.65
1.15

AL
1.5
1.3
1.1
0.20
0.591
1.30
-2.67
-0.87

;Api:








'
Ar








•
AU








•
AW
2.7
2.8
3.1
0.21
0.591
2.87
4.11
5.92
fr "
AZ
1.2
1.4
1.8
0.31
0.886
1.47
-1.95
-0.14

BA
1.2
1.3
1.4
0.10
0.295
1.30
-2.67
-0.87

Tbb









BC
2.9
3.0
2.6
0.21
0.591
2.83
3.96
5.77
if
BG









BH
2.1
2.8
2.6
0.36
1.064
2.50
2.52
4.33
ft
BK
1.9
1.8
1.8
0.06
0.148
1.83
-0.37
1.44

BL








"
BM
2.2
2.0
2.1
0.10
0.295
2.10
0.79
2.60

;bn;








~ . V*
BO
1.6
2.3
1.6
0.40
1.064
1.83
-0.37
1.44

bs








¦ •'* -
c
1.5
1.6
1.7
0.10
0.295
1.60
-1.38
0.43

CA
.4-0
3 8
:5:1
0.70
J/752;
,y ,"i "
,4.30
10.32
12;i2

CC









CE
1.8
2.9
3.1
0.70
2.752
2.60
2.95
4.76
ft
CJ
2.6
1.7
1.4
0.62
2.470
1.90
-0.08
173

CO









:cp'









cs
0.9
1.0
1.0
0.06
0.148
0.97
-4.12
-2.31

'•ci*









'D'.' ^








•
DB
1.9
2.0
1.9
0.06
0.148
1.93
0.07
1.88

dd








, •
DE
1.7
1.7
1.8
0.06
0.148
1.73
-0.80
1.01

Jpi-









DO








•
DT
1.5
1.7
1.8
0.15
0.443
1.67
-1.09
0.72

DZ
2.9
2.3
2.4
0.32
0.886
2.53
2.67
4.47
n
E
2.0
2.0
1.5
0.29
0.738
1.83
-0.37
1.44

EB
2.6
1.8
1.5
0.57
2.189
1.97
0.21
2.02

EL
1.6
0.4
1.8
0.76
3.033
1.27
-2.82
-1.01

EO
1.6
2.1
1.9
0.25
0.738
1.87
-0.22
1.59

ER
... >, •, ...





¦ , ,c ¦ • -


• =
No data submitted

TAG SYMBOLS

IT = Above control limit
0 S
Insufficient data
x =
Determined to be an outlier
= Below control limit
	
-------
ESD-LV Performance Evaluation: Blind-A, 20-Oct-1998
18/28

SK
FN
2.4
2.3
2.4
0.06
0.148
2.37
1.94
3.75
MSDf








GQ
2.2
2.3
2.2
0.06
0.148
2.23
1.37
3.18









WM








HK
2.0
2.0
2.1
0.06
0.148
2.03
0.50
2.31
HL
1.5
1.6
1.4
0.10
0.295
1.50
-1.81
0.00
HP
2.2
3.3
1.9
0.74
3.033
2.47
2.38
4.19
I
1.7
2.8
1.7
0.64
2.189
2.07
0.65
2.45
ID
2.2
1.9
1.6
0.30
0.886
1.90
-0.08
1.73
Radium-228
Lab

lit*?.
,#fK*
fsm
.VA
JS
Ipf
K
XT
'KE
'jg/ft. *¦
»T~
,vKX
£
3SP

MF
w •;
MP
;^MT-
:^ivrv.
^my;
fNH:
NJ
Res. 1
1.6
1.9
1.9
2.1
Exper. Rng anal	Normalized deviation
Res. 2 Res. 3 Sigma (R + SR) Average (grand-avg) (known)
Tag
1.2
1.0
2.6
2.0
2.0
1.9
1.1
1.8
1.8
0.32 0.886
0.44 1.345
0.10 0.295
1.8
0.15 0.443
1.7
0.36
1.064
1.23 -2.96
2.10 0.79
1.90 -0.08
1.97 0.21
1.60
-1.38
-1.15
2.60
1.73
{•• '3
W-':}
tM
it
&•)
2.02
tr

tr
is#; _
iV4-%
'.'*??•
& t

;•[! 'j£



¦ <-
*?V

' .
tr •
. -•
V
0.43
• s No data submitted
0 = Insufficient data
TAG SYMBOLS
x = Determined to be an outlier
ft — Above control limit
JJ = Below control limit
-------
19/28
ESD-LV Performance Evaluation: Blind-A, 20-Oct>1998
Radium-228
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
*NK>








^ "
NO









0
1.4
1.6
1.5
U.1U
0.295
1.50
-1.81
0.00

OB








•4-V
. ' "•»
OF








i £
6m









OS








; * vf .. V
• <
OY








* V
'v-'
P
1.7
0.7
1.0
0.51
1.908
1.13
-3.40
-1.59

PB








''S-
PD








$ - V
PG








, :-,V ¦
%. ?
PM








•• %
PW








w
Q
2.3
2.3
2.4
0.06
0.148
2.33
1.80
3.61
..11
QM.








^ •'
QP









QQ








v:-?,.»
QT
2.2
1.8
2.0
0.20
0.591
2.00
0.36
2.17

QU
2.8
3.2
3.3
0.26
0.738
3.10
5.12
6.93

QW








-¦ri*) V
QX









QZ
1.7
1.5
1.5
0.12
0.295
1.57
-1.52
0.29

KB









RD
2.1
3.5
3.2
0.74
3.033
2.93
4.40
6.21
si
RG








C''«"
RI








-
IlK
1.4
2.0
1.6
0.31
0.886
1.67
-1.09
0.72

RP








*"•-> v
r ?._>•; ¦-
RR








":4: C
RU








:V'
RZ
1.4
1.3
1.4
0.06
0,148
1.37
-2.39
-0.58

S
1.2
2.5
3.8
1.30
6.408
2.50
2.52
4.33
it
SD
3.0
2.6
3.3
0.35
1.064
2.97
4.54
6.35
tr
sf"









SG








- ;
SI
8.2
7.9
-9.o:,
•0.67
2.189v
8.37;
27.92
29.73
;*x i
SL








^ m}^
SM
1.7
2.3
1.6
0.38
1.064
1.87
-0.22
1.59

SN








."m
SO









SR








's •
ss
1.8
1.6
1.9
0.15
0.443
L77
-0.65
1.15

sx
1.6
1.6
1.8
0.12
0.295
1.67
-1.09
0.72

T
2.2
1.9
1.9
0.17
0.443
2.00
0.36
2.17

• =
No data submitted

TAG SYMBOLS

fl = Above control limit
0 s Insufficient data	x = Determined to be an outlier	- Below control limit
-------
ESD-LV Performance Evaluation: Blind-A, 20-Oct-1998
20/28
Radium-228
Lab
Res. 1
Exper. Rng anal
Res. 2 Res. 3 Sigma (R + SR) Average
Normalized deviation
(grand-avg) (known) Tag
s-fw v<
u
«UM;
UP
UQ
WM
IMf
5VCXr
v> y' , i-.< ^
IWP
WH
WO
WR
>ww*
X
SaT
' J*
:?XC|2
IXD^
XI
XL
XM
?<• ^ lr'
XQ
:xt$
¦ •yS-
0.2
1.3
1.9
1.3
2.0
2.1
:15.9
'Si* Y£?
10.3
,-y
m
:4-8j
3;6
1.2
2.1
2.0
2.7
0.9
2.0
1.6
2.5
1.4
2.2
1.2
2.3
2.0
|15M
8.5'
' /> & <•
0.9
3.0
2.8
2.4
1.1
2.0
1.2
2.1
1.8
0.9
1.2
2.0
2.2
;16&
6:8
9i8>>
A ' yf ' X
W-V
1.3
3.1
2.9
2.9
1.23
0.26
0.68
0.06
0.17
0.10
Kl;5j6:!>-
\ '\t V •} S'/'X
**86
5.564
0.738
2.752
0.148
0.443
0.295
0.20; 0:591
7.815
7&.502!;
2-59: 13:i59
*Q;5"3? f;i;908
0.21	0.591
0.55	1.908
0.49	1.627
0.25	0.738
1.0 0.10 0.295
2.1 0.06 0.148
1.1 0.26 0.738
1.60
1.50
1.67
1.23
2.10
2.10
15.70:
MM
4^83;
;&7i^
6;M
1.13
2.73
2.57
2.67
1.00
2.03
1.30
-1.38
-1.81
-1.09
-2.96
0.79
0.79
0.43
0.00
0.72
-1.15
2.60
2.60
59:68: Mi49i
12^3;
25:04
-3.40
3.53
2.81
3.24
14:43
26.85
?9;96
-1.59
5.34
4.62
-3.97
0.50
-2.67
-2.17
2.31
-0.87



'XfrS
It
ir
5.05 IT
fW':
;pv
- '
.'

i?'
> >
¦zSr'tfX
9 v-v

Data sorted by Laboratory Average
Average	Tag	Lab Average	Tag	Lab Average	Tag
Lab
0.97
1.00
cs
XI
1.13
1.13
WH
P
1.23
1.23
U
JS
• = No data submitted
0 = Insufficient data
TAG SYMBOLS
x = Determined to be an outlier
IT s Above control limit
•H s Below control limit
-------
21 / 28	ESD-LV Performance Evaluation: Blind-A, 20-Oct-1998
Radium-228
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
1.27

EL
1.83

BO
2.23
11
GQ
1.30

XM
1.83

BK
2.33
IT
Q
1.30

BA
1.83

A
2.37
It
FN
1.30

AL
1.87

SM
2.47
IT
HP
1.37

RZ
1.87

EO
2.50
IT
S
1.47

AZ
1.90

L
2.50
IT
BH
1.60

TN
1.90

CJ
2.53
IT
DZ
1.50

O
1.90

ID
2.57
IT
WR
1.50

HL
1.93

DB
2.60
IT
CE
1.57

QZ
1.93

AF
2.67
it
X
1.60

TD
1.97

MF
2.73
it
WO
1.60

NJ
1.97

EB
2.83
IT
BC
1.60

C
2.00

T
2.87
ir
AW
1.67

TQ
2.00

QT
2.93
ir
RD
1.67

SX
2.03

XL
2.97
if
SD
1.67

RK
2.03

HK
3.10
tr
QU
1.67

DT
2.07

AJ
3.80
X
W
1.70

AE
2.07

I
4.30
X
CA
1.73

DE
2.10

K
4.83
X
VI
1.77

SS
2.10

UQ
7.70
X
VT
1.77

AK
2.10

UP
8.37
X
SI
1.83

E
2.10

BM
10.13
15.70
X
X
VH
VA
Normalized deviation of the mean from the known value
% responding labs	Frequency distribution
10-
	B	?|WB ^nHHH@WBlB IB mm nHgiMin a yna
•6	-4	-2	0	+2	+4	+6
Normalized deviation of the mean from the grand average
• sNo data submitted TAG SYMBOLS	IT = Above control limit
0 = Insufficient data	x = Determined to be an outlier	It £ Below control limit
-------
/?=
ESD-LV Performance Evaluation: Blind-A, 20-Oct-1998
22/28
Uranium (Natural)	Statistical Summary	175 Participants
The known value of this nuclide is 18.1 pCi/1 with an expected precision of 3.0; the control limits
are 12.9 to 23.3; the warning regions ere 12.9 to 14.6 and 21.6 to 23.3
87(49.7 %) Failed to respond
4(2.3 %) Outliers
Statistic
77(44.0 %) Within all limits
Respondents
---- 7(4.0 %) In warning zone
but within control
Non-outliers
Mean
17.46
Grand Avg 17.30
Std. Dev.
3.47
' 1.68
Variance
12.01
2.81
% Coef. of Var.
19.85
9.70
% deviation of mean from known value
-3.53
-4.40
Norm. dev. of mean from known value
-0.18
-0.48
Median
17.43
17.43
% deviation of median from known value
-3.68
-3.68
Norm. dev. of median from known value
-0.19
-0.40
4(4.5 %) More than 3 norm. S.D.
7(8.0 %) Between 2 and 3 norm. S.D. •
. 58(65.9 %) Within 1 norm. S.D.
I
!	of known value
19(21.6 %) Between 1 and 2 norm. S.D.
-------
f,	








	
23/28
*•
ESD-LV Performance Evaluation: Blind-A, 20-Oct-1998


r					 ¦— ¦
Uranium (Natural)







Lab
Res. 1


Exper.
Rng anal

Normalized deviation

Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
A
17.1
16.9
17.4
0.25
0.098
17.13
-0.10
-0.56

AE
14.2
14.7
16.9
1.44
0.532
15.27
-1.18
-1.64

AF
19.5
20.2
17.7
1.29
0.492
19.13
1.06
0.60










V\*» —¦
¦ •-
MM









AK
19.3
20.3
19.5
0.53
0.197
19.70
1.38
0.92

AL
18.0
17.3
17.3
0.40
0.138
17.53
0.13
-0.33

:ap^








;• •
AR
16.5
16.3
16.0
0.25
0.098
16.27
-0.60
-1.06

Jau-:;








«
AW
17.9
18.2
17.8
0.21
0.079
17.97
0.38
-0.08

AZ
17.8
17.0
18.9
0.95
0.374
17.90
0.34
-0.12

BA
19.8
17.4
18.0
1.25
0.473
18.40
0.63
0.17

BB
15.2
15.5
15.4
0.15
0.059
15.37
-1.12
-1.58

BC
17.9
18.5
17.7
0.42
0.158
18.03
0.42
-0.04

7bg>








, • -
BH
13.6
14.5
15.2
0.80
0.315
14.43
-1.66
-2.12

BK
171
17.0
17.1
0.06
0.020
1707
-0.14
-0.60

;BI?








,< •:
BM
17.7
15.1
16.8
1.32
0.512
16.53
-0.44
-0.90

BN
14.6
14.5
13.3
0.72
0.256
14.13
-1.83
-2.29

BO
18.6
18.6
18.5
0.06
0.020
18.57
0.73
0.27

~BS~;'








\ •- -
C
17.8
16.9
16.4
0.71
0.276
17.03
-0.16
-0.62

CA
15.9
16.3
16.2
0.21
0.°79
16.13
-0.68
-1.14

W:.








¦ •-'V
CE
17.9
18.8
18.4
0.45
0.177
18.37
0.61
0.15

CJ
20.0
18.0
19.0
1.00
0.394
19.00
0.98
0.52

CO
15.8
15.1
16.4
0.65
0.256
15.77
-0.89
-1.35

jiCR;









cs
15.6
15.6
15.6
0.01
0.000
15.60
-0.98
-1.44

cx
19.5
20.2
19.1
0.56
0.217
19.60
1.33
0.87

D
18.4
20.1
19.2
0.85
0.335
19.23
1.11
0.65

DB
15.4
16.4
13.0
1.75
0.669
14.93
-1.37
-1.83

DO









iraf"
•26.9;
§26:91
¦:21M
-0:06
|0:020l
26,93:
5.56
5.10
; ><
-N f
B1









DO
16.7
16.4
16.8
0.21
0.079
16.63
-0.39
-0.85

DT
17.9
16.6
17.4
0.66
0.256
17.30
0.00
-0.46

DZ
15.4
15.7
15.6
0.15
0.059
15.57
-1.00
-1.46

E
16.1
16.3
17.6
0.81
0.295
16.67
-0.37
-0.83

EB
13.0
14.2
15.2
1.10
0.433
14.13
-1.83
-2.29

EL
13.3
13.6
14.4
0.57
0.217
13.77
-2.04
-2.50

r'S* • "
*EO








»* 0 „
:ER^








I i
• =
No data submitted

TAG SYMBOLS

IT = Above control limit
I 0 =
Insufficient data
x =
Determined to be an outlier
JJ- = Below control limit
	-0
-------
ESD-LV Performance Evaluation: Blind-A, 20-Oct-1998
24/28
Uranium (Natural)
Lab Res. 1 Res, 2
Exper. Rng anal
Rea. 3 Sigma (R + SR) Average
Normalized deviation
(grand-avg) (known) Tag
W
' JEX'i
:FE'§
FJ
^flP
17.1
17.8
17.9
0.44
0.158
17.60
0.17
-0.29
ff JU;
fn"
14.0
14.0
15.0
0.58
0.197
14.33
-1.71
-2.17
'Ml








GQ
17.5
17.6
17.7
0.10
0.039
17.60
0.17
-0.29
^zf,
v o" '

















iia|i
ii^y
$j§8;
¥M
§9®
fpai;?

UMI
tern
HL
15.0
13 ^9
15.7
0.91
0.354
14.87
-141
' -1.87
HP
20.7
20.8
20.9
0.10
0.039
20.80
2.02
1.56
I
17.9
15.0
16.2
1.46
0.571
16.37
-0.54
-1.00
ID
17.6
18.0
17.7
0.21
0.079
17.77
0.27
-0.19
'TO';








&4l.








J£
17.0
16.7
17.5
0.40
0.158
17.07
-0.14
-0.60
!®K?"








•#,








JN
16.6
15.2
17.9
1.35
0.532
16.57
-0.42
-0.89
JQ








JS
18.0
17.6
17.8
0.20
0.079
17.80
0.29
-0.17
pXf

















K
13.2
18.0
18.2
2.83
0.984
16.47
-0.48
-0.94
;}XE*'








JSL
20.5
19.5
20.0
0.50
0.197
20.00
1.56
1.10
liA








L
20.6
19.2
19.2
0.81
0.276
19.67
1.36
0.90
vjUG--








LF
18.3
17.5
17.0
0.66
0.256
17.60
0.17
-0.29
'•Lli
LR;
MS
•MP.
MP
"MT
"mV
•¦MY
NA
NH
NJ
18.0
15.4
16.0
18.0
13.9
16.8
19.0
15.7
17.3
0.68
0.96
0.66
0.197
0.354
0.256
18.33
15.00
16.70
0.59
-1.33
-0.35
>&•

•'.'JIM
Ls*VMU

'¦ST^v
iff^f
$»->V
--
1g»§<5

3£5j£'?
¦ 5£ V*
'':

:
r$< ~:;x
.y,-»
- V*"
0.13
-1.79
-0.81
• 5 No data submitted
0 s Insufficient data
TAG SYMBOLS
x = Determined to be an outlier
1t s Above
s Below
control limit
control limit
-------
25 / 28	ESD-LV Performance Evaluation: Blind-A, 20-Oct-1998
'
Uranium (Natural)
Lab Res. 1 Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known)
-
"X
Tag
VNK;;







	

ISpS









0 v








K'
: •, r
OB
19.9
18.0
18.3
1.02
0.374
18.73
0.83
0.37










:f\"
OM









OS
17.7
18.0
17.6
0.21
0.079
17.77
0.27
-0.19

.xyjr








f *
p
16.0
16.7
17.5
0.75
0.295
16.73
-0.33
-0.79

PB









PD









PG



















PW








% ^
Q
17.7
18.2
18.6
0.45
0.177
18.17
0.50
0.04

QM
20.9
20.4
20.3
0.32
0.118
20.53
1.87
1.40

QP








r. it -
QQ
16.3
17.3
16.9
0.50
0.197
16.83
-0.27
-0.73

QT








' r
QU
16.8
17.0
20.5
2.08
0.728
18.10
0.46
0.00

QW








~ y"5
QX








9
QZ
17.7
17.6
17.9
0.15
0.059
17.73
0.25
-0.21

RB








1 V<
BX)
5:6
5:6
5.6
0.00
0.000
5.60
6.76
-7.22

RG
17.5
17.6
17.6
0.06
0.020
17.57
0.15
-0.31

RI








'
RK
17.5
14.7
14.5
1.68
0.591
15.57
-1.00
-1.46

RP
17.6
17.5
17.5
0.06
0.020
17.53
0.13
-0.33

RR









:RU}








' ''-Z
'J
RZ
16.4
16.6
15.3
0.70
0.256
16.10
-0.69
-1.15

S
17.4
16.7
17.0
0.35
0.138
17.03
-0.16
-0.62

SD
20.0
19.6
198
0.20
0.079
19.80
1.44
0.98










•v.*
•>SG









SI
18.5
18.7
19.7
0.64
0.236
18.97
0.96
0.50

SL
13.4
15.8
12.5
1.71
0.650
13.90
-1.96
-2.42

SM
16.2
15.9
17.0
0.57
0.217
16.37
-0.54
-1.00

vSN-








•*
SO
14.6
14.6
17.2
1.50
0.512
15.47
-1.06
-1.52

SR









SS
17.8
17.5
17.2
0.30
0.118
17^50
0.11
-0.35

SX
17.4
17.0
16.9
0.26
0.098
17.10
-0.12
-0.58

T
20.5
20.5
17.8
1.56
0.532
19.60
1.33
0.87

1 in ill
• 5)
;	'.>
No data submitted
Insufficient data
X s
TAG SYMBOLS
Determined to be an outlier
1T = Above control limit
s Below control limit
	jj
-------
ESD-LV Performance Evaluation: Blind-A, 20-Oct-1998
26/28
Uranium (Natural)
Exper. Rng anal	Normalized deviation
Lab Res. 1 Res. 2 Res. 3 Sigma (R + SR) Average (grand-avg) (known) Tag
TD
:TL.
TQ
..VCs®
U0
UP
16.8
18.4
16.5
. -c V?iS *
VA
y.-* *»'»».
:&S®
VH
VI
$*3
"

0.90
-1.04
-0.25
^ * I
I
M


Average
14.13
14.13
TAG SYMBOLS
x s Determined to be an outlier
Lab
EB
BN
ft = Above control limit
II s Below control limit
-------
27/28
ESD-LV Performance Evaluation: Blind-A, 20-Oct-1998
Uranium (Natural)
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag Lab
Average
Tag
Lab
14.33

FN
16.83
QQ
17.93

VO
14.43

BH
17.03
c
17.97

AW
14.87

HL
17.03
s
18.03

BC
14.93

DB
17.07
TD
18.10

QU
15.00

NH
17.07
JE
18.17

Q
15.27

AE
17.07
BK
18.23

WR
15.37

BB
17.10
SX
18.30

TQ
15.47

SO
17.13
A
18.33

NA
15.57

RK
17.23
WO
18.37

CE
15.57

DZ
17.30
DT
18.40

BA
15.60

cs
17.37
XA
18.57

BO
15.77

CO
17.50
ss
18.73

OB
16.10

RZ
17.53
AL
18.97

SI
16.13

CA
17.53
VI
19.00

CJ
16.27

AR
17.53
RP
19.13

AF
16.30

XL
17.57
RG
19.23

D
16.37

SM
17.60
LF
19.60

T
16.37

I
17.60
GQ
19.60

CX
16.40

UP
17.60
FJ
19.67

XI
16.43

WH
17.67
XM
19.67

L
16.47

K
17.73
QZ
19.70

AK
16.53

BM
17.77
OS
19.80

SD
16.57

JN
17.77
ID
20.00

KT
16.63

DO
17.80
W
20.53

QM
16.67

E
17.80
JS
20.80

HP
16.70

NJ
17.90
X
22.80

VH
16.73

P
17.90
AZ
26.93
40.40
X
X
DE
HK
% responding labs

Frequency distribution



10-
T
0	+2
Normalized deviation of the mean from the known value
• s No data submitted
0 s Insufficient data
TAG SYMBOLS
x = Determined to be an outlier
ft = Above control limit
JJ- = Below control limit
-------
ESD-LV Performance Evaluation: Blind-A, 20-Oct-1998	28 / 28
Uranium (Natural)
% responding labs	Frequency distribution
10-

T	1	—t	1	T	T	T~*"—f	T	» "	r	1	¦—r™
-6	-4	-2	0+2+4	+6
Normalized deviation of the mean from the grand average
-------
United States
Environmental Protection
Agency
Office of Research and
Development
Washington, DC 20460
E PA/600/R -99/019
February 1999
Blind-B Performance
Evaluation Study
A Statistical Evaluation of
the October 20,1998 Data
-------
Blind-B
Performance Evaluation Study
October 20, 1998
Environmental Protection Agency
National Exposure Research Laboratory
Environmental Sciences Division
Las Vegas, Nevada
-------
df%
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY

OFFICE OF RESEARCH AND DEVELOPMENT
NATIONAL EXPOSURE RESEARCH LABORATORY
ENVIRONMENTAL SCIENCES DIVISION-LAS VEGAS
P.O. BOX 93478
LAS VEGAS, NEVADA 89193-3478
(702/798-2100)
Dear Participant,
Enclosed are the results of the Environmental Sciences Division (ESD-LV)
Performance Evaluation Study for Blind-B; October20, 1998.
The known value for each analysis was determined by gravimetric methods,
checked by chemical analyses performed by ESD-LV's Radiochemistry Laboratory,
and compared to the participating laboratories' grand average.
The expected precision, determined by the known value, was taken from
'Table 3. Laboratory Precision: One Standard Deviation Values and Control Limits
for Various Analyses", which is based on data accumulated over the years by the
Performance Evaluation Program, and can be found In the Environmental Radioactivity
Performance Evaluation Studies Program and Radioactive Standards Distribution
Program information brochure.
Please take a few minutes to review this report and the analytical data your
laboratory submitted to us. If there are any apparent discrepancies, please notify us
immediately.
We encourage you to make use of the computer-automated data-entry system
that has been in place for some time now. As the number of participants increases,
and it becomes unrealistic for us to receive results by mail or FAX, the computer
system will be our only avenue for accepting data.
If you have any questions or comments, please send a message via the data-entry
system or contact Stephen Pia at 702/798-2102 or Patricia Honsa at 702/798-2141.
Stephen Pia
Team Leader
RADQA Program
Enclosure
-------
NOTICE
This material has been funded wholly by
the U.S. Environmental Protection Agency.
It has been subjected to the Agency's review,
and has been approved for publication as
an EPA document.
-------
V.
ESD-LV Performance Evaluation: Blind-B, 20-Oct-1998
		
1/43
The following pages consist of separate sections for each of the nuclides in this study with four
parts per section. After the first, each part is separated from the next by a new page or a thick
horizontal bar. The first page of each section is a statistical summary for the nuclide and starts
with a statement of the known value, the control limits, and the warning limits.
The warning limits are placed at two normalized standard deviations above and below the
known value and the control limits are three normalized standard deviations above and below
the known value. If you keep control charts, these values will be useful for anticipating problems
with the accuracy of your analytical methods.
The coin shaped pie chart at the top of the summary page shows the fate of all the samples
sent out in number and percentage terms. The pie chart starts at the top and rotates clockwise.
The first sector represents those participants who submitted analytical results within both the
warning and control limits. The next sector represents those who are in the warning region but
not out of control. The third sector represents those who are out of control, but have passed
the outlier test. The fourth sector represents those who have failed the outlier test. The last
sector represents those participants who have failed to respond properly. This is the case if no
analytical results were returned, or less than three determinations were reported, or if the results
were received too late. The reeding on the edge of the coin is spaced at one percent intervals, and
the sector shading becomes darker as the data reliability decreases. Sectors with zero width are
not shown.
The table in the center shows a number of statistical quantities calculated from the submitted
data based on the mean and median values in relation to the known value, both before and after
outlier removal. The lower pie chart uses the same construction as the upper chart and shows
the distribution of properly submitted data in terms of deviation from the known value divided
into sectors representing one, two, three, and greater than three normalized standard deviations.
The second part is an alphabetical listing, in lab-code order, of submitted data and several
calculated quantities. An entry that is shaded has been rejected because of one of the reasons
listed above or failure of the outlier test. The fifth and sixth columns are a measure of laboratory
precision. The Range analysis is a normalized value that you may use to keep precision control
charts. The eighth and ninth columns are the differences from the mean of all non-outliers and
from the known value, respectively. If this value is between 2.0 and 3.0, your analytical process
precision is in the warning zone; if it exceeds 3.0 it is out of control. A tag symbol may appear in
the last column. Each page with tags has a symbol definition summary at the bottom. If there is
no tag symbol, the data is within the control limits, but it may be in the warning zone.
The third part is a three-column listing of result average, tag symbol, and lab-code in average
order excluding those labs not responding properly. In this order, all outliers and out-of-control
results appear at the top or bottom of the list.
The last part is two bar chart displays showing frequency distributions of responding
participants. The first chart places the known value at the center and a bar at each 0.2 unit of
expected precision. The second chart places the mean of the reported measurements at the center
and a bar at each 0.2 unit of standard deviation. In both cases, a bar includes those results within
0.1 unit up to the maximum of six. Any results more than six units from the center value are
shown cumulatively by a shaded bar one past the sixth unit. If the central tendency of the known
value distribution falls away from the center, an error in accuracy is indicated. If the distribution
is broad, poor precision is indicated. The mean value distribution is similar but uses the average
and standard deviation of reported results as its basis.
-------
2/43	ESD-LV Performance Evaluation: Blind-B, 20-Oct-1998
The Range Analysis(R + SR) is calculated from the range, mean range and standard error of
the range values. The range is the difference between the maximum and minimum results for the
laboratory. The mean range is calculated by multiplying the expected precision by 1.693(for three
results). The standard error of the range is calculated by multiplying the mean range by 2.575(for
three results), subtracting the mean range from this product, and dividing the result by 3. If the
range is greater than the mean range, then the range analysis is calculated by subtracting the
mean range from the range, dividing the result by the standard error of the range and adding 1.
If the mean range is greater than or equal to the range, then the range analysis is calculated by
dividing the range by the mean range.
The normalized deviation of the mean from the grand average is calculated from the deviation
of the mean from the grand average and the standard error of the mean values. The deviation of
the mean from the grand average is calculated by subtracting the grand average from the
average of the laboratory's three results. The standard error of the mean is calculated by
dividing the expected precision by the square root of 3(the number of results). The normalized
deviation of the mean from the grand average is calculated by dividing the deviation of the mean
from the grand average by the standard error of the mean.
The normalized deviation of the mean from the known value is calculated from the deviation of
the mean from the known value and the standard error of the mean values. The deviation of the
mean from the known value is calculated by subtracting the known value from the average of the
laboratory's three results. The standard error of the mean is calculated by dividing the expected
precision by the square root of 3(the number of results). The normalized deviation of the mean
from the known value is calculated by dividing the deviation of the mean from the known value by
the standard error of the mean.
A complete explanation of the statistical calculations involved in the report may be found in
the Environmental Radioactivity Performance Evaluation Studies Program information brochure
[Draft Revision of EPA-600/4-81-004], available from Patricia Honsa, ESD-LV, 702/798-2141.
-------
ESD-LV Performance Evaluation: Blind-B, 20-Oct-1998
3/43
Gross Beta	Statistical Summary	175 Participants
The known value of this nuclide is 94.0 pCi/1 with an expected precision of 10.0; the control limits
are 76.7 to 111.3; the warning regions are 76.7 to 82.4 and 105.6 to 111.3
51 (29.1 %) Failed to respond »4
10(5.7 %) Outliers '
11 (6.3 %) Out of control
but not an outlier
Statistic
86(49.1 %) Within all limits
Respondents
17(9.7 %) In warning zone
but within control
Non-outliers
Mean
104.07
Grand Avg 94.20
Std. Dev.
93.80
10.64
Variance
8799.07
113.12
% Coef. of Var.
90.14
11.29
% deviation of mean from known value
10.71
0.21
Norm. dev. of mean from known value
0.11
0.02
Median
95.03
95.03
% deviation of median from known value
1.10
1.10
Norm. dev. of median from known value
0.01
0.10
21(16.9 %) More than 3 norm. S.D. .
17(13.7 %) Between 2 and 3 norm. S.D
• 52(41.9 %) Within 1 norm. S.D.
of known value
34(27.4 %) Between 1 and 2 norm. S.D.
-------
4/43

ESD-LV Performance Evaluation: Blind-B, 20-Oct-1998

j
Gross Beta







•>




Exper.
Rng anal

Normalized deviation

Lab
Res. 1
Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
A
90.6
95.4
93.6
2.42
0.284
93.20
-0.17
-0.14

AE
86.6
86.3
88.7
1.31
0.142
87.20
-1.21
-1.18

AF
104.1
103.7
104.4
0.35
0.041
104.07
1.71
1.74

AH
80.7
86.0
81.9
2.78
0.313
82.87
-1.96
-1.93

AJ
70.9
70.0
73.1
1.59
0.183
71.33
-3.96
-3.93
11
AK
94.8
94.3
96.4
1.10
0.124
95.17
0.17
0.20

AL
96.2
94.2
95.7
1.04
0.118
95.37
0.20
0.24

:'ap








"
AR
105.9
104.5
106.7
1.11
0.130
105.70
1.99
2.03

AU
94.8
96.8
95.5
1.01
0.118
95.70
0.26
0.29

"aw"'
7:4';
<8.6
7?W'-
S4V;
ftiagjT
Miifc
t")"')"!" "ff/w
-14c83
14^80. i
:;x
AZ
89.7
84.7
93%
4.61
0.543
89.43
-0.83
-0.79

BA
109.0
109.5
88.7
11.87
1.435
102.40
1.42
1.45

•MI
160.7:
1l5L3;
'¦* X* ''
144.7
SSjsI

IMS
;9AT-

'M -•
BC
88.4
90.1
93.8
2.76
0.319~
90.77
-0.59
-0.56

;bg








' • ,*
BH
94.5
96.4
96.0
1.00
0.112
95.63
0.25
0.28

BK
105.0
106.0
113.0
4.36
0.473
108.00
2.39
2.42

BL








•/ -
BM
96.7
99.4
97.0
1.48
0.159
97.70
0.61
0.64

BN
72.2
73.0
74.1
0.95
0.112
73.10
-3.65
-3.62

BO
105.0
108.3
103.1
2.63
0.307
105.47
1.95
1.99

BS
92.0
90.3
86.8
2.65
0.307
89.70
-0.78
-0.74

C
99.9
97.5
95.0
2.45
0.289
97.47
0.57
0.60

CA
95.7
88.9
94.9
3.72
0.402
93.17
-0.18
-0.14

cc"








rV
CE
88.5
91.0
89.9
1.25
0.148
89.80
-0.76
-0.73

CJ
73.0
83.0
68.0
7.64
0.886
74.67
-3.38
-3.35

vCcF-








•:r
M;
5684XK.
¦-767W
713.8
^42.32
8.490
':721;77?

108.73,
.X.';
sps*

900^
025.0
Mod;
~-Cf\
4:72 li-
900:00
$&$$$

fx>
cx
88.7
86.9
84.0
2.37
0.278
86.53
-1.33
-129

D
100.4
96.9
95.1
2.70
0.313
97.47
0.57
0.60

DB
100.0
101.0
100.0
0.58
0.059
100.33
1.06
1.10

DD
92.9
89.0
88.3
2.48
0.272
90.07
-0.72
-0.68

DE
94.0
95.0
96.0
1.00
0.118
95.00
0.14
0.17











£DO









DT
92.6
90.4
91.7
1.11
0.130
91.67
-0.46
-0.42

DZ
90.5
93.3
99.8
4.77
0.549
94.63
0.06
0.09

E
96.4
94.4
95.0
1.03
0.118
95.27
0.18
0.22

"¦EB?"
— 	
-------
ESD-LV Performance Evaluation: Blind-B, 20-Oct-1998	5/43
Gross Beta








Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation

Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
EV
111.7
99.8
106.4
5.96
0.703
105.97
2.04
2.07

EX
101.1
92.2
89.2
6.19
0.703
94.17
-0.01
0.03

pi-l









FF
76.7
76.8
77.8
0.61
0.065
77.10
-2.96
-2.93

§&1








}$$&&
FL_
82.0
88.0
88.0
3.46
0.354
86.00
-1.42
-1.39

®ss
MfA
#4i0d
111
Us!
;i0ill8
iiip
Mm™*
IBSf

PP
jiff
GQ
92.2
91.5
93.1
0.80
0.095
92.27
-0.34
-0.30

GZ
104.5
103.8
100.8
1.97
0.219
103.03
1.53
1.56



i35.T:
#iSi
®80^
^PJ9-C:
N3^7|
rmm


HK
104.0
101.0
106.0
2.52
0.295
103?67
1j64
167

HL
94.3
97.7
96.9
1.78
0.201
96.30
0.36
0.40

HP
90.8
94.1
90.9
1.88
0.195
91.93
-0.39
-0.36

I
97.4
100.3
96.5
1.99
0.224
98.07
0.67
0.70

ID
84.4
85.2
82.0
1.67
0.189
83.87
-1.79
-1.76










~s5# t-v-
, >sv*T«s.
JE
98.1
96.7
98.0
0.78
0.083
97.60
0.59
0.62










' |*:^I
JM
98.1
98.8
101.2
1.63
0.183
99.37
0.89
0.93

JN
113.0
109.0
104.0
4.51
0.532
108.67
2.51
2.54

JQ
121.2
127.5
124.2
3.15
0.372
124.30
5.21
5.25
It
js^
101.0
102.6
103.3
1.18
0.136
102.30
1.40
1.44










~¥pf
'/jif?
i" *









K
87.8
89.8
88.4
1.03
0.118
88.67
-0.96
-0.92

pE"
PS
Jpp
tMrM
ttyiw -
S#9
0!|36
f44j03

Igp
saseEF?
KT
80.0
82.5
79.0
Tso
0.207
80.50
-2.37~
-2.34

KX
106.4
105.9
106.7
0.40
0.047
106.33
2.10
2.14

L
107.6
107.8
106.0
0.99
0.106
107.13
2.24
2.27











LF
87.0
86.0
81.0
3.21
0.354
84.67
-1.65
-1.62
5 >X
LL
116.9
113.7
114.6
1.65
0.189
115.07
3.61
3.65
it
LR
102.0
105.0
106.0
2.08
0.236
104.33
1.75
1.79










V;?
MF
105.7
105.7
104.4
0.75
0.077
105.27
1.92
i.95

:wi
V \OW.









•MTi









MV
122.7
118.5
120.0
2.13
0.248
120.40
4.54
4.57
n
¦ MVvi








vv- ;¦
< •• -s. ./
1
NA
99.5
99.6
94.7
2.80
0.289
97.93
0.65
0.68

NH
68.0
79.0
92.0
12.01
1.795
79.67
-2.52
-2.48

NJ
91.3
91.0
90.5
0.40
0.047
90.93
-0.57
-0.53

• E
Mo data submitted

TAG SYMBOLS

It = Above control limit
Q
in
Insufficient data
X s
Determined to be an outlier
¦11 = Below control limit
-------
6/43

ESD-LV Performance Evaluation: Blind-B, 20-Oct-1998


Gross Beta








Lab
Res. 1


Exper.
Rug anal

Normalized deviation

Res. 2
Res. 3
Sigma
-------
ESD-LV Performance Evaluation: Blind-B, 20-Oct-1998
7/43
Gross Beta
Lab
Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
TD
TN
TQ
TY
U
PS
•UM
UP
UQ
92.1
95.7
99.8
3.85
0.455
95.87
0.29
0.32
65.6
70.9
74.4
4.43
0.520
70.30
-4.14
-4.10
85.4
87.2
90.8
2.75
0.319
87.80
-1.11
-1.07
95.6
94.8
94.8
0.46
0.047
95.07
0.15
0.18
103.5
97.9
100.4
2.81
0.331
100.60
1.11
1.14
98.0
105.0
101.0
3.51
0.413
101.33
1.24
1.27
101.0
97.0
104.0
3.51
0.413
100.67
1.12
1.15
117.5
81.1
87.9
102.8
83.9
92.4
107.0
81.9
91.5
7.57
1.44
2.38
0.868
0.165
0.266
109.10
82.30
90.60
2.58
-2.06
-0.62
2.62
-2.03
-0.59

t*';
vxm
9.&

vo
96.2
100.0
88.2
6.02
0.697
94.80
0.10
0.14
x'jv;

iliii
PPIffi
mm
iSlj
3£§w2
136^70
:;;?i36
1*40;

W
91.2
85.0
85.6
3.42
0.366
87.27
-1.20
-1.17

WE
110.0
107.0
107.0
1.73
0.177
108.00
2.39
2.42

WH
92.6
95.4
102.5
5.10
0.585
96.83
0.46
0.49

WO
92.5
101.0
109.0
8.25
0.975
100.83
1.15
1.18

WR
90.3
90.6
95.0
2.63
0.278
91.97
-0.39
-0.35

WW
76.0
78.6
84.6
4.41
0.508
79.73
-2.51
-2.47

X
94.9
93.6
89.4
2.87
0.325
92.63
-0.27
-0.24

!xa
.Sxe>:







**










to.









XF
90.5
91.4
92.4
0.95
0.112
91.43
-0.48
-0.44
•v
XI
,-rv. v*1
90.0
92.0
91.0
1.00
0.118
91.00
-0.55
-0.52

H&r









xk
77.7
94.8
86.7
8.55
1.019
86.40
-1.35
-1.32

XL
87.5
91.4
95.4
3.95
0.467
91.43
-0.48
-0.44

XM
86.7
85.1
86.9
0.99
0.106
86.23
-1.38
-1.35

XN
74.0
71.1
71.9
1.50
0.171
72.33
-3.79
-3.75

MB-:








»
XQ








i !•
xrl









,
-------
8/43	ESD-LV Performance Evaluation: Blind-B, 20-Oct-1998
Gross Beta
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
70.30
11
TN
91.43

XL
99.00

SX
71.33
II
AJ
91.43

XF
99.37

SG
71.73
II
SL
91.57

DT
99.37

JM
72.33
II
XN
91.93

O
100.33

DB
73.10
II
BN
91.93

HP
100.60

U
74.67
11
CJ
91.97

WR
100.67

UQ
77.10

FF
92.27

GQ
100.83

WO
77.17

QZ
92.63

X
101.33

UP
79.67

NH
93.03

QT
101.37

RI
79.73

WW
93.17

CA
102.30

JS
80.50

KT
93.20

A
102.40

BA
81.20

SI
93.90

RZ
102.63

SD
82.30

VI
94.17

EX
103.03

GZ
82.70

OF
94.53

DZ
103.07

Q
82.87

AH
94.80

VO
103.67

RB
83.00

OS
94.80

QQ
103.67

HK
83.87

ID
95.00

DE
104.07

AF
84.07

RK
95.07

TY
104.33

LR
84.67

LF
95.17

AK
104.57

PG
85.03

SS
95.27

E
105.27

MF
85.30

QP
95.37

AL
105.47

BO
86.00

FL
95.63

BH
105.70

AR
86.23

XM
95.70

QX
105.97

EV
86.40

XK
95.70

AU
106.33

KX
86.53

CX
95.80

SN
107.13

L
87.20

AE
95.87

TD
108.00

WE
87.27

W
96.00

EO
108.00

BK
87.80

TQ
96.30

HL
108.67

JN
87.97

SM
96.83

WH
108.70

P
88.67

K
96.83

T
109.10

VH
89.43

AZ
97.47

D
110.13

SF
89.70

BS
97.47

C
115.07
fl
LL
89.80

CE
97.60

-------
ESD-LV Performance Evaluation: Blind-B, 20-Oct-1998	9/43
Gross Beta
% responding labs	Frequency distribution
lOf

¦	i — -j*— y B—t ¦ [	|*
-6	-4	-2	0	+2	+4	+6
Normalized deviation of the mean from the known value
% responding labs	Frequency distribution	
10	
- —pH— ^ ¦—^¦¦Bb^IIIbJbIbjIbBb^hwB-
-2	0	+2
-4	-2	0	+2	+4	+6
Normalized deviation of the mean from the grand average
\V-
-------
ESD-LV Performance Evaluation: Blind-B, 20-Oct-1998
10/43
Strontium-89
175 Participants
Statistical Summary
The known value of this nuclide is 19.0 pCi/i with an expected precision of 6.0; the control limits
are 10.3 to 27.7; the warning regions are 10.3 to 13.2 and 24.8 to 27.7
112(64.0 %) Failed to respond •
5(2.9 %) Outliers	
2(1.1 %) Out of control
but not an outlier
Statistic
/ 51(29.1 %) Within all limits
Respondents
• 5(2.9 %) In warning zone
but within control
Non-outliers
Mean
18.87
Grand Avg 18.25
Std. Dev.
6.43
3.33
Variance
41.34
11.10
% Coef. of Var.
34.08
18.26
% deviation of mean from known value
-0.70
-3.96
Norm. dev. of mean from known value
-0.02
-0.23
Median
18.33
18.33
% deviation of median from known value
-3.51
-3.51
Norm. dev. of median from known value
-0.10
-0.20
8(12.7 %) More than 3 norm. S.D
,45(71.4 %) Within 1 norm. S.D.
¦	of known value
6(9.5 %) Between 1 and 2 norm. S.D.
-------
11/43	ESD-LV Performance Evaluation: Blind-B, 20-Oct-1998
Strontium-89
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
A
19.0
19.0
20.0
0.58
0.118
19.33
0.38
0.12

AE
17.0
18.0
18.0
0.58
0.118
17.67
-0.20
-0.46

AF
18.0
17.0
19.0
1.00
0.236
18.00
-0.09
-0.35

AH









AJ
18.0
21.0
20.0
1.53
0.354
19.67
0.49
0.23

AK
19.0
18.0
18.0
0.58
0.118
18.33
0.03
-0.23

AL
19.0
20.0
18.0
1.00
0.236
19.00
0.26
0.00

."ap









AR








%-
Au
32.0
400
32i0
4.62

534.67
•5;69
5.^3
X
AW
20.0
21.0
22.0
1.00
0.236
21.00
0.95
0.69

AZ
18.0
19.0
18.0
0.58
0.118
18.33
0.03
-0.23

BA
20.0
20.0
20.0
0.00
0.000
20.00
0.61
0.35

BB









BC
17.0
18.0
18.0
0.58
0.118
17.67
-0.20
-0.46

N - - ••
BG








, • ,
BH
26.0
27.0
27.0
0.58
0.118
26.67
2.92
2.66

BK








•
BL
21.0
19.0
18.0
1.53
0.354
19.33
0.38
0.12

BM
19.0
19.0
20.0
0.58
0.118
19.33
0.38
0.12

BN









BO
20.0
21.0
20.0
0.58
0.118
20.33
0.72
0.46

cBS









C
20.0
21.0
20.0
0.58
0.118
20.33
0.72
0.46

CA
16.0
20.0
18.0
200
0.473
18.00
-0.09
-0.35

ice.









CE








V •-
CJ
20.0
17.0
18.0
1.53
0.354
18.33
0.03
-0.23

CO



2^65
>0.591?
J'¥oo;
•4:94
-5f20"
KX
CP
15.0
11.0
13.0
2.00
0.473
13.00
¦1.82
-2.08

cs
23.0
25.0
22.0
1.53
0.354
23.33
1.76
1.50

|cx"
J&o
28 (j
WM
-7:00;
2.020/'
!36 OO -
6.15
5.89

D
18.0
18.0
15.0
1.73
0.354
17.00
¦0.43
-0.69

DB









DD
23.0
22.0
18.0
2.65
0.591
21.00
0.95
0.69

DE
17.0
17.0
17.0
0.00
0.000
17.00
-0.43
-0.69

DI








' •
DO
19.0
22.0
18.0
2.08
0.473
19.67
0.49
0.23

DT
17.0
16.0
17.0
0.58
0.118
16.67
-0.55
-0.81

DZ









E
18.0
21.0
20.0
1.53
0.354
19.67
0.49
0.23

EB
21.0
21.0
21.0
0.00
0.000
21.00
0.95
0.69

EL
19.0
18.0
18.0
0.58
0.118
18.33
0.03
-0.23

EO








v •
ER








\«i," ¦
• h No data submitted	TAG SYMBOLS	It = Above control limit
0 h Insufficient data	x s Determined to be an outlier	U = Below control limit
y*	¦>)
-------
((	






	
>•
ESD-LV Performance Evaluation: Blind-B, 20-Oct-1998
12/43
Strontium-89









Exper. Rng anal

Normalized deviation

Lab
Res. 1 Res. 2
Res. 3
Sigma (R + SR)
Average
(grand-avg)
(known) Tag







WM








FE
22.0 19.0
18.0
2.08 0.473
19.67
0.49
0.23

^FFh















|FIi







fW






W&t*









!!!$ spiOf
1KB
i%m mi

ISM
WB








\\








HK
19.0 19.0
19.0
0.00 0.000
19.00
0.26
0.00

:• -•<
EDL






...'v.xLiS
HP
12.0 13.0
13.0
0.58 0.118
12.67
-1.93
-2.19

I
19.0 20.0
21.0
1.00 0.236
20.00
0.61
0.35

ID






PTf&Tt;
V"-
••IU;,







%j4






-«-iy
': H&M
JE
22.0 20.0
21.0
1.00 0.236
21.00
0.95
0.69

"«JGi:






JM






' ''Tas 9r
' \yl
JN
¦£ £
JQ













JS
17.0 16.0
18.0
1.00 0.236
17.00
-0.43
-0.69








'7
¦V ',>. •%"
:.JY^






. f$i>
K
16.0 18.0
19.0
1.53 0.354
17.67
-0.20
-0.46









KT














ll#
L
18.0 19.0
19.0
0.58 0.118
18.67
0.15
-0.12

-------

13/43

ESD-LV Performance Evaluation: Blind-B, 20-Oct-1998

Strontium-89




\
Lab
Res. 1
Res. 2

Exper. Rng anal
Normalized deviation

Res. 3
Sigma (R + SR)
Average (grand-avg) (known) Tag
'NK;













0





¦ • *
OB





' v
OF





- &
QM





• -: x
¦OS.;





*
ox





¦ • V
p;y-






PB





' +
PD





- :
PG






PM





/
PW





' '%
Q
25.0
23.0
19.0
3.06 0.709
22.33 1.42 1.15

QM
11.0
10.0
10.0
0.58 0.118
10.33 -2.74 -3.00

QP





.^**
QQ






QT






QU
15.0
17.0
18.0
1.53 0.354
16.67 -0.55 -0.81

QW
15.0
16.0
18.0
1.53 0.354
16.33 -0.66 -0.92

QX





• Jt,
QZ





?
RB






RD





p V
RG;





•s ^
RR






;ru;





b
•rz?





* ' -' A,
#
s
17.0
17.0
18.0
0.58 0.118
17.33 -0.32 -0.58

SD
19.0
22.0
20.0
1.53 0.354
20.33 0.72 0.46

"sf3






SG





•-
si •





• t'
SL





.*•;';
SM
12.0
13.0
13.0
0.58 0.118
12.67 -1.93 -2.19

sn'






so






SR





• -f
ss
15.0
13.0
14.0
1.00 0.236
14.00 -1.47 -1.73

''SX:>




A
' -
T
16.0
17.0
19.0
1.53 0.354
17.33 -0.32 -0.58

• s No data submitted

TAG SYMBOLS
1T = Above control limit
0 = Insufficient data	x = Determined to be an outlier	s Below control limit
v*	—v
-------
ESD-LV Performance Evaluation: Blind-B, 20-Oct-1998	14 / 43
I	—	
Strontium-89
Exper. Rng anal	Normalized deviation
Lab
Res. 1
Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
TD
17.0
16.0
20.0
2.08
0.473
17.67
-0.20
-0.46

:\TLV'









J?"
:;TN{









TQ
18.0
18.0
18.0
0.00
0.000
18.00
-0.09
-0.35











u ""
20.0
20.0
19.0
0.58
0!ll8
19.67
0.49
0.23

WM









«UM>








::W
UP
8.0
8.0
9.0
0.58
0.118
8.33
-3.43
-3.70

SP"








KS









'va|









¦:yci,








r
VH
21.0
16.0
19.0
2.52
0.591
18.67
0.15
-0.12

;w









:;VJ


















I#
vo
10.0
8.0
9.0
1.00
0.236
9.00
-3.20
-3.46
c
^vrr









w
17.0
19.0
18.0
1.00
0.236
18.00
-0.09
-0.35

WE
\ ' ?








?;;im
" WH :








'v>*.. *•
a
> A. -
WR









WW









x"""
16.0
17.0
17.0
0.58
0.118
16.67
-0.55
-0.81










:#
xe
¦f








t"
fXD:








t>
fxF^









J/v „
i&Qt!


0,58
0.118
mj
•4.36
¦¦4i62
if










XK
26.0
25.0
20.0
3.21
0.709
23.67
1.88
1.62

XL
23.0
24.0
25.0
1.00
0.236
24.00
1.99
1.73

XM
19.0
22.0
24.0
2.52
0.591
21.67
1.18
0.92

cXT^i









¦'-XP'v









^xq;;









'XT':'









Y
19.0
16.0
16.0
1.73
0.354
17.00
-0.43
-0.69

Data sorted by Laboratory Average
Average Tag
Lab
Average Tag
Lab
Average
Tag Lab
4.00 x
CO
8.33 U
UP
10.33
QM
5.67 x
XI
9.00 U
VO
12.67
SM
• 3 No data submitted

TAG SYMBOLS

n
= Above control limit
0 s Insufficient data

x s Determined to be an outlier

s Below control limit
-------
fr
15/43
ESD-LV Performance Evaluation: Blind-B, 20-Oct-1998
Strontium-89
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag Lab
Average
Tag
Lab
12.67

HP
18.00
TQ
19.67

AJ
13.00

CP
18.00
CA
20.00

I
14.00

ss
18.00
AF
20.00

BA
16.00

NJ
18.33
EL
20.33

SD
16.33

QW
18.33
CJ
20.33

C
16.67

X
18.33
AZ
20.33

BO
16.67

QU
18.33
AK
21.00

JE
16.67

DT
18.67
VH
21.00

EB
17.00

Y
18.67
L
21.00

DD
17.00

JS
19.00
LF
21.00

AW
17.00

DE
19.00
HK
21.67

XM
17.00

D
19.00
AL
22.33

Q
17.33

T
19.33
BM
23.33

cs
17.33

S
19.33
BL
23.67

XK
17.67

TD
19.33
A
24.00

XL
17.67

K
19.67
U
26.67

BH
17.67

BC
19.67
FE
34.67
X
AU
17.67

AE
19.67
E
36.00
X
CX
18.00

W
19.67
DO
50.00
X
GQ
% responding labs

Frequency distribution



10-
wi11
41	B?
XL
¦ ¦ .
-6
T~ ~~| " 1	1
-4	-2	0	+2	+4
Normalized deviation of the mean from the known value
+6
% responding labs	Frequency distribution
10-

JRL
-4	-2	0	+2
Normalized deviation of the mean from the grand average
—T-
+4
+6
• = No data submitted
0 = Insufficient data
TAG SYMBOLS
x e Determined to be an outlier
ft s Above control limit
II = Below control limit
-------
ESD-LV Performance Evaluation: Blind-B, 20-Oct>1998
	>
16/43
Strontium-90	Statistical Summary	175 Participants
The known value of this nuclide is 8.0 pCi/1 with an expected precision of 6.0; the control limits
are 0.0 to 16.7; the warning regions are 0.0 to 2.2 and 13.8 to 16.7
Statistic	Respondents	Non-outliers
Mean
7.66
Grand Avg 7.24
Std. Dev.
2.84
1.61
Variance
8.04
2.60
% Coef. of Var.
37.04
22.27
% deviation of mean from known value
-4.29
-9.44
Norm. dev. of mean from known value
-0.12
-0.47
Median
7.33
7.33
% deviation of median from known value
-8.33
-8.33
Norm. dev. of median from known value
-0.24
-0.41
-------
17/43
V	
ESD-LV Performance Evaluation: Blind-B, 20-Oct-1998
Strontiuxn-90
Exper. Rng anal	Normalized deviation
Lab Res. 1 Res. 2	Res. 3	Sigma (R + SR) Average (grand-avg) (known) Tag
A
8.0
7.0
7.0
0.58
0.118
7.33
0.03
-0.23

AE
7.0
7.0
6.0
0.58
0.118
6.67
-0.20
-0.46

AF
8.0
8.0
8.0
0.00
0.000
8.00
0.26
0.00

AH^









AJ
8.0
7.0
8.0
0.58
0.118
7.67
0.15
-0.12

AK
7.0
8.0
7.0
0.58
0.118
7.33
0.03
-0.23

AL
8.0
8.0
8.0
0.00
0.000
8.00
0.26
0.00

'ap,-;








<•
AR









AU
6.0
4.0
12.0
4.16
0.945
7.33
0.03
-0.23

AW
8.0
8.0
8.0
0.00
0.000
8.00
0.26
0.00

AZ
7.0
8.0
7.0
0.58
0.118
7.33
0.03
-0.23

BA
8.0
7.0
7.0
0.58
0.118
7.33
0.03
-0.23

BB
7.0
7.0
7.0
0.00
0.000
7.00
-0.08
-0.35

BC
5.0
5.0
6.0
0.58
0.118
5.33
-0.66
-0.92

BG









BH
8.0
9.0
10.0
1.00
0.236
9.00
0.61
0.35

; BK








•
BL
7.0
8.0
9.0
1.00
0.236
8.00
0.26
0.00

BM
7.0
8.0
9.0
1.00
0.236
8.00
0.26
0.00

BN









BO
8.0
7.0
7.0
0.58
0.118
7.33
0.03
-0.23

bsT








-
-------
	






	^
N.
ESD-LV Performance Evaluation: Blind-B,
20-Oct-1998
18/43
- —
f Strontium-90









Exper. Rng anal

Normalized deviation

Lab
Res. 1 Res. 2
Res. 3
Sigma (R + SR) Average
(grand-avg)
(known) Tag
. * V V \







'4EX-?;






FE
©
©
8.0
0.58 0.118
7.33
U.03
-U.23

*¦> -rY ' "»V
VOFF-:















•
o
7.0
0.00 0.000
7.00
-0.08
-0.35

•¦HFi''







HP
9.0 7.0
7.0
1.15 0.236
7.67
0.15
-0.12

I
00
b
b
7.0
0.58 0.118
7.33
0.03
-0.23

ID
\'<'v '






s-^'v'^vv
IU







•Ur'







JE
8.0 9.0
9.0
0.58 0.118
8-67
0.49
0.23

v*5< --t s
tJG'-







;:JM'







•1JN'







4jq-






. ^
JS
o
00
b
7.0
0.58 0.118
7.33
0.03
-0.23








	
, JY







K
00
o
00
o
8.0
0.00 0.000
8.00
0.26
0.00

^.v- ~ •••
;KE







5|KTv






m
rKX^






jfv^O
. Sixs!*
L
o
o
7.0
0.00 0.000
7.00
-0.08
-0.35

"3le







LF
5.0 5.0
5.0
0.00 0.000
5.00
-0.78
-1.04

fLL






;
y
LB






•fl







•VS
MI






•iss
?M1






\{v
¦'¦Ml






•-S
Ml







;M1






•#
•;N







;n/






*f-k
NI







NJ
5.0 6.0
8.0
1.53 0.354
6.33
-0.32
-0.58

• =
No data submitted

TAG SYMBOLS

ft e Above control limit
1 0 B
Insufficient data
X H
Determined to be an outlier

s Below control limit
v?	




	—y
-------
(r
19/43
ESD-LV Performance Evaluation: Blind-B, 20-Oct-1998

r
Strontium-90



>


Exper.
Rng anal
Normalized deviation

Lab
Res. 1 Res. 2
Res. 3 Sigma
(R + SR) Average
(grand-avg) (known) Tag






t. .
m





' o




-9 ^ \ >
OB





OF-




,• v -
oivf




f*'
'
OS




• ^ ¦
6y





p.f.





PB




• • *
PD





PG




*;:?
PM





PW





Q
9.0 8.0
11.0 1.53
0.354 9.33
0.72 0.46

QM
o
©
7.0 0.00
0.000 7.00
-0.08 -0.35

QP




'
QQ





QT




« t
QU
7.0 6.0
4.0 1.53
0.354 5.67
-0.55 -0.81

QW
6.0 6.0
7.0 0.58
0.118 6.33
-0.32 -0.58

QX




£ •
QZ




v • ;v<
KB




^
RD





RG





RI




:
-------
Strontium-90
Lab Res. 1
ESD-LV Performance Evaluation: Blind-B, 20-Oct-1998
20/43
Res. 2 Res. 3
Exper. Rng anal	Normalized deviation
Sigma (R + SR) Average (grand-avg) (known) Tag
TD
;'"TL;
¦:

















W
8.0
7.0
7.0
0.58
0.118
7.33
0.03
-0.23
:^ve








1SVH








iwo








WR
8.0
8.0
9.0
0.58
0.118
8.33
0.38
0.12
'WW?








X
8.0
7.0
7.0
0.58
0.118
7.33
0.03
-0.23
;XA?








•:xc^:

















:-xe:|








XI
11.0
12.0
13.0
1.00
0.236
12.00
1.65
1.39
•'Xjl








XK
5.0
4.0
4.0
0.58
0.118
4.33
-1.01
-1.27
XL
7.0
7.0
7.0
0.00
0.000
7.00
-0.08
-0.35
XM
7.0
6.0
7.0
0.58
0.118
6.67
-0.20
-0.46
"Mj







•xp-;-








XQ/








'XT./








. Y
11.0
10.0
9.0
1.00
0.236
10.00
0.95
0.69
TagL
f-M

< •v
y. ¦ * y
j v .»-n?L
J r X I
'?;•5 A '
rf'V"
/{# £V
' $
:'>Y'v
ij Ay;.'1

¦.a i'~ 4'
y w, ~
~v^>
> C'A
•*« ^-rXII
> • :
*iC*v
•	'-V:
•	>;
"•*5
Lab
2.67
2.67
GQ
CX
2.67
4.33
CO
XK
5.00
5.33
LF
SM
• = No data submitted
0 = Insufficient data
TAG SYMBOLS
x = Determined to be an outlier
ft s Above control limit
JJ- = Below control limit
-------
21/43
ESD-LV Performance Evaluation: Blind-B, 20-Oct-1998
Strontium-90
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag Lab
Average
Tag
Lab
5.33

BC
7.00
BB
8.00

BM
5.67

QU
7.33
X
8.00

BL
6.00

TD
7.33
W
8.00

AW
6.33

T
7.33
JS
8.00

AL
6.33

QW
7.33
I
8.00

AF
6.33

NJ
7.33
FE
8.33

WR
6.33

EB
7.33
CP
8.33

DT
6.33

DO
7.33
CA
8.33

CJ
6.67

XM
7.33
BO
8.67

SS
6.67

CE
7.33
BA
8.67

SD
6.67

AE
7.33
AZ
8.67

JE
7.00

XL
7.33
AU
8.67

C
7.00

U
7.33
AK
9.00

BH
7.00

TQ
7.33
A
9.33

VH
7.00

S
7.67
HP
9.33

Q
7.00

QM
7.67
D
10.00

Y
7.00

L
7.67
AJ
10.67

DZ
7.00

HK
8.00
K
12.00

XI
7.00

EL
8.00
E
20.33
X
UP
7.00

DD
8.00
DE
21.33
X
cs
% responding labs

Frequency distribution



20-
10-
"T"
-6
T
-r
T "	1	
-2	0	+2
Normalized deviation of the mean from the known value
¦ ¦
-4
+6
• = No data submitted	TAG SYMBOLS	ft = Above control limit
0 = Insufficient data	x = Determined to be an outlier	li = Below control limit
-------
ESD-LV Performance Evaluation: Blind-B, 20-Oct-1998
22/43
Strontium-90
% responding labs
Frequency distribution
30-
20-
10-
-I-
-4
.1
J	flllM IIwBjw ¦
¦JUL
-6
2	0" +2	+4
Normalized deviation of the mean from the grand average
+6
-------
ESD-LV Performance Evaluation: Blind-B, 20-Oct-1998	23 / 43
>-	 -¦
r	—	—>
Cobalt-60	Statistical Summary	175 Participants
The known value of this nuclide is 21.0 pCi/1 with an expected precision of 5.0; the control limits
are 12.3 to 29.7; the warning regions are 12.3 to 15.2 and 26.8 to 29.7
Statistic	Respondents	Non-outliers
Mean
21.93
Grand Avg 21.77
Std. Dev.
3.59
2.03
Variance
12.92
4.13
% Coef. of Var.
16.39
9.33
% deviation of mean from known value
4.43
3.68
Norm. dev. of mean from known value
0.26
0.38
Median
21.67
21.67
% deviation of median from known value
3.17
3.17
Norm. dev. of median from known value
0.19
0.33
-------
ft	







	x
24/43
ESD-LV Performance Evaluation: Blind-B, 20-Oct-1998

Cobalt-60






¦ >
Lab
Res. 1
Res. 2
Res. 3
Exper.
Rng anal

Normalized deviation
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
A
22.0
21.0
22.0
0.58
0.118
21.67
-0.04
0.23
AE
23.0
22.0
25.0
1.53
0.354
23.33
0.54
0.81
AF
21.0
20.0
21.0
0.58
0.118
20.67
-0.38
-0.12
AH
20.0
20.0
17.0
1.73
0.354
19.00
-0.96
-0.69
AJ
24.0
24.0
23.0
0.58
0.118
23.67
0.66
0.92
spi
?3(K0;
—>v.
30.0 V
Ho*
!W
i,0.2|6:
130,67 s


JkL
25.0
24.0
25.0
0.58
0.118
24.67
1.00
1.27









All







* f
Alf
22.0
22.0
21.0
0.58
0.118
21.67
-0.04
0.23
AW
19.0
19.0
20.0
0.58
0.118
19.33
-0.84
-0.58
AZ
20.0
16.0
18.0
2.00
0.473
18.00
-1.31
-1.04
BA
19.0
23.0
23.0
2.31
0.473
21.67
-0.04
0.23
BB
22.0
20.0
22.0
1.15
0.236
21.33
-0.15
0.12
BC
21.0
21.0
21.0
0.00
0.000
21.00
-0.27
0.00
:bg';







T'.
BH
21.0
24.0
22.0
1.53
0.354
22.33
0.19
0.46
BK
23.0
23.0
23.0
0.00
0.000
23.00
0.43
0.69
BL
23.0
21.0
21.0
1.15
0.236
21.67
-0.04
0.23
BM
23.0
21.0
22.0
1.00
0.236
22.00
0.08
0.35
BN
21.0
20.0
21.0
0.58
0.118
20.67
-0.38
-0.12
BO
21.0
21.0
24.0
1.73
0.354
22.00
0.08
0.35








 >c.v- v&i
££23|S3

¦5;69®;
Wfk
CP
25.0
21.0
23.0
2.00
0.473
23.00
0.43
0.69
cs
21.0
22.0
21.0
0.58
0.118
21.33
-0.15
0.12
cx
20.0
24.0
24.0
2.31
0.473
22.67
0.31
0.58
D
21.0
22.0
21.0
0.58
0.118
21.33
-0.15
0.12
Ipj;





•V»jvvJ.
DD
18.0
21.0
20.0
1.53
0.354
19.67
-0.73
-0.46
DE
23.0
23.0
24.0
0.58
0.118
23.33
0.54
0.81








?>•s
DO
21.0
21.0
22.0
0.58
0.118
21.33
-0.15
0.12
DT
21.0
22.0
24.0
1.53
0.354
22.33
0.19
0.46
bz








E
23 X)
21.0
22.0
1.00
0.236
22.00
0.08
0.35
EB
24.0
24.0
25.0
0.58
0.118
24.33
0.89
1.15
EL
20.0
22.0
21,0
1.00
0.236
21.00
-0.27
0.00
eo








^ER:;







;A »V;
• =
No data submitted

TAG SYMBOLS

ft = Above control limit
0 S
V=-—
Insufficient data
X s
Determined to be an outlier
= Below control limit
-------
ESD-LV Performance Evaluation: Blind-B, 20-Oct-1998
25/43
Cobalt-60
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
wi:"








EX
22.0
21.0
20.0
1.00
0.236
21.00
-0.27
0.00
FE
21.0
21.0
18.0
1.73
0.354
20.00
-0.61
-0.35
FJ
22.0
22.0
22.0
0.00
0.000
22.00
0.08
0.35
FL
22.0
23.0
23.0
0.58
0.118
22.67
0.31
0.58
Spl








GQ
xs v- y<-yr--yo
1GZ;
22.0
22.0
22.0
0.00
0.000
22.00
0.08
0.35
m
22.0
22.0
22.0
0.00
0.000
22.00
0.08
0.35
HK
23.0
23.0
22.0
0.58
0.118
22.67
0.31
0.58
HL
24.0
23.0
22.0
1.00
0.236
23.00
0.43
0.69
HP
21.0
21.0
21.0
0.00
0.000
21.00
-0.27
0.00
I
22.0
22.0
21.0
0.58
0.118
21.67
-0.04
0.23
IPf

















JE
21.0
21.0
22.0
0.58
0.118
21.33
-0.15
0.12
JG
26.0
26.0
30.0
2.31
0.473
27.33
1.93
2.19
JM
22.0
20.0
20.0
1.15
0.236
20.67
-0.38
-0.12
aOR
PQ1








JS
21.0
21.0
22.0
0.58
0.118
21.33
-0.15
0.12
ixi








At' *¦.








K
22.0
22.0
22.0
0.00
0.000
22.00
0.08
0.35
®KE<
'»








LF
23.0
20.0
25.0
2.52
0.591
22.67
0.31
0.58
LR
18.0
22.0
20.0
2.00
0.473
20.00
-0.61
-0.35
M
22.0
21.0
22.0
0.58
0.118
21.67
-0.04
0.23
Sm®T








MP
20.0
18.0
19.0
1.00
0.236
19.00
-0.96
-0.69









MV
18.0
13.0
16.0
2.52
0.591
15.67
-2.12
-1.85
m^P








Ina^«








NH
20.0
20.0
21.0
0.58
0.118
20.33
-0.50
-0.23
NJ
21.0
21.0
21.0
0.00
0.000
21.00
-0.27
0.00



iW

V

&



• s No data submitted
0 = Insufficient data
TAG SYMBOLS
x = Determined to be an outlier
IT e Above
II = Below
control limit
control limit
v/
-------
r,	
26/43
ESD-LV Performance Evaluation: Blind-B, 20-Oct-1998

	^
Cobalt-60








Lab
Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
' NK/
.....






'

NO









O
23.0
23.0
23.0
0.00
0.000
23.00
0.43
0.69

OB
22.0
22.0
22.0
0.00
0.000
22.00
0.08
0.35

OP:









om
21.0
22.0
23.0
1.00
0.236
22.00
0.08
0.35

'OS









OY:









p
30.0
25.0
25.0
2.89
0.591
26.67
1.70
1.96

PB;









PD
45.0
f46:0
46.0
0.58
0.118
45:67,
18.28:
'8.54
^x';>
PG








Svi
PM
22.0
23.0
33.0
6.08
1.570
26.00
1.46
1.73

PW








9 ', }ls
Q
21.0
21.0
22.0
0.58
0.118
21.33
-0.15
0.12

QM
25.0
22.0
24.0
1.53
0.354
23.67
0.66
0.92

QP
20.0
21.0
23.0
1.53
0.354
21.33
-0.15
0.12

QQ









QT
20.0
19.0
19.0
0.58
0.118
19.33
-0.84
-0.58

QU
21.0
20.0
20.0
0.58
0.118
20.33
-0.50
-0.23

QW
23.0
21.0
19.0
2.00
0.473
21.00
-0.27
0.00

QX
14.0
16.0
16.0
1.15
0.236
15.33
-2.23
-1.96

QZ
26.0
21.0
23.0
2.52
0.591
23.33
0.54
0.81

RB









RD
29.0
29.0
29.0
0.00
0.000
29.00
2.50
2.77

BG









RI ^









RK
23.0
23.0
23.0
0.00
0.000
23.00
0.43
0.69

BP








•
BR









RU








#,
RZ
17.0
16.0
17.0
0.58
0.118
16.67
-1.77
-1.50

S
21.0
22.0
21.0
0.58
0.118
21.33
-0.15
0.12

SD
21.0
21.0
21.0
0.00
0.000
21.00
-0.27
0.00

SF
21.0
23.0
21.0
1.15
0.236
21.67
-0.04
0.23

¦;sg.








•:
SI
22.0
21.0
25.0
2.08
0.473
22.67
0.31
0.58

SL








¦ *: '
SM
24.0
21.0
26.0
2.52
0.591
23.67
0.66
0.92

SN
22.0
19.0
20.0
1.53
0.354
20.33
-0.50
-0.23

SO








w >
SR









ss
21.0
25.0
24.0
2.08
0.473
23.33
0.54
0.81

sx
19.0
23.0
21.0
2.00
0.473
21.00
-0.27
0.00

T
22.0
20.0
23.0
1.53
0.354
21.67
-0.04
0.23

• =
No data submitted

TAG SYMBOLS

ft s Above control limit
0 =
	
Insufficient data
x =
Determined to be an outlier
JJ- s Below control limit
	jj
-------
ESD-LV Performance Evaluation: Blind-B, 20-Oct-1998
27/43
Cobalt-60
Lab
TD
w*
Ml
TQ
f jc» <•»¦<
f-TY#
U
mu
UP
MM
|TO
p
^V€|
VH
VI
W
WM
vo
VT
W
fWE,
•rV-> '2^23<
ipt:
wo
WR
WW
X
XA
XD
XF
XI
«-N*.¦¦ •	v:
XQt
XT
,Y-^
Res. 1
24.0
21.0
21.0
22.0
22.0
27.0
16.0
23.0
21.0
21.0
Res. 2
25.0
17.0
23.0
20.0
20.0
26.0
23.0
25.0
22.0
22.0
Exper. Rng anal	Normalized deviation
Res. 3 Sigma (R + SR) Average (grand-avg) (known) Tag
24.0
20.0
22.0
21.0
20.0
19.0
23.0
26.0
21.0
21.0
058
2.08
1.00
1.00
0.118
0.473
0.236
0.236
24.33
19.33
22.00
21.00
1.15
4.36
4.04
1.53
0.58
0.236
0.945
0.827
0.354
0.118
20.67
24.00
20.67
24.67
21.33
0.58
0.118
21.33
Average
Tag
Data sorted by Laboratory Average
Lab Average	Tag	Lab
0.89
-0.84
0.08
-0.27
-0.38
0.77
-0.38
1.00
-0.15
-0.15
1.15
-0.58
0.35
0.00
-0.12
1.04
-0.12
1.27
0.12
18.0
18.0
18.0
0.00
0.000
18.00
-1.31
-1.04
22.0
22.0
22.0
0.00
0.000
22.00
0.08
0.35
22.0
22.0
22.0
0.00
0.000
22.00
0.08
0.35
21.0
27.0
24.0
3.00
0.709
24.00
0.77
1.04
23.0
21.0
22.0
1.00
0.236
22.00
0.08
0.35
22.0
23.0
24.0
1.00
0.236
23.00
0.43
0.69
22.0
20.0
20.0
1.15
0.236
20.67
-0.38
-0.12
21.0
22.0
21.0
0.58
0.118
21.33
-0.15
0.12
22.0
22.0
22.0
0.00
0.000
22.00
0.08
0.35
0.12
Average
Tag.
If
v ,y>>s v
as;

HC
'¦47?>k
4s
¦c ,4s
. •. s-
- -Ajt?
*vV<

* V".
•V
Lab
5.33
15.33
x
CO
QX
15.67
16.67
MV
RZ
18.00
18.00
WO
AZ
• h No data submitted
0 s Insufficient data
TAG SYMBOLS
x == Determined to be an outlier
ft = Above control limit
= Below control limit
-------
28/43
ESD-LV Performance Evaluation: Blind-B, 20-Oct-1998
Cobalt-60
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
19.00

MP
21.33

S
22.33

BH
19.00

AH
21.33

QP
22.67

SI
19.33

TQ
21.33

Q
22.67

LF
19.33

QT
21.33

JS
22.67

HK
19.33

AW
21.33

JE
22.67

FL
19.67

DD
21.33

DO
22.67

CX
20.00

LR
21.33

D
23.00

XD
20.00

FE
21.33

CS
23.00

RK
20.33

SN
21.33

BB
23.00

O
20.33

QU
21.67

T
23.00

KX
20.33

NH
21.67

SF
23.00

HL
20.67

XF
21.67

M
23.00

CP
20.67

VO
21.67

I
23.00

BK
20.67

VH
21.67

BL
23.33

SS
20.67

JM
21.67

BA
23.33

QZ
20.67

CA
21.67

AU
23.33

DE
20.67

BN
21.67

A
23.33

AE
20.67

AF
22.00

XK
23.67

SM
21.00

UP
22.00

XA
23.67

QM
21.00

sx
22.00

WW
23.67

AJ
21.00

SD
22.00

WR
24.00

X
21.00

QW
22.00

U
24.00

VI
21.00

NJ
22.00

OM
24.33

TD
21.00

L
22.00

OB
24.33

EB
21.00

HP
22.00

K
24.67

VT
21.00

KX
22.00

m
24.67

AL
21.00

EL
22.00

GQ
25.00

C
21.00

CE
22.00

FJ
26.00

PM
21.00

BC
22.00

E
26.67

P
21.33

XT
22.00

BO
27.33

JG
21.33

XI
22.00

BM
29.00

RD
21.33

W
22.33

DT
30.67
X
AK



22.33

CJ
45.67
X
PD
responding labs
Frequency distribution
20-
10-
UUL
#¦
¦»
T"
-6
-1—
-4
-2	0	+2
Normalized deviation of the mean from the known value
+4
+6
• s No data submitted
0 s Insufficient data
TAG SYMBOLS
x = Determined to be an outlier
ft = Above control limit
•11 = Below control limit
-------
ESD-LV Performance Evaluation: Blind-B, 20-Oct-1998
29/43
Cobalt-60
% responding labs
Frequency distribution
20-
10-
-4	-2	0" +2	+4
Normalized deviation of the mean from the grand average
-------
ESD-LV Performance Evaluation: Blind-B, 20-Oct-1998
30/43
Cesium-134	Statistical Summary	175 Participants
The known value of this nuclide is 6.0 pCi/I with an expected precision of 6.0; the control limits
are 0.0 to 14.7; the warning regions are 0.0 to 0.2 and 11.8 to 14.7
76(43.4 %) Failed to respond ,
; 96(54.9 %) Within all limits
1(0.6 %) Outliers
Statistic
Respondents
---•2(1.1 %) In warning zone
but within control
Non-outliers
Mean
6.49
Grand Avg 6.40
Std. Dev.
1.84
1.57
Variance
3.37
2.46
%Coef. of Var.
28.27
24.54
% deviation of mean from known value
8.25
6.63
Norm. dev. of mean from known value
0.27
0.25
Median
6.33
6.33
% deviation of median from known value
5.56
5.56
Norm. dev. of median from known value
0.18
0.21
1(1.0 %) More than 3 norm. S.D.
. 91 (91.9 %) Within 1 norm. S.D.
of known value
sj	',7*%.*?
$
2(2.0 %) Between 2 and 3 norm. S.D.'
* 5(5.1 %) Between 1 and.2 norm. S.D.
-------
31 / 43	ESD-LV Performance Evaluation: Blind-B, 20-Oct-1998
r
Cesium-134
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
A
6.0
7.0
6.0
0.58
0.118
6.33
-0.02
0.12

AE
7.0
7.0
7.0
0.00
0.000
7.00
0.21
0.35

AF
5.0
6.0
5.0
0.58
0.118
5.33
-0.37
-0.23

>Ah3








'*&
/• v V?
AJ
5.0
5.0
6.0
0.58
0.118
5.33
-0.37
-0.23

AK
14.0
13.0
16.0
1.53
0.354
14.33
2.75
2.89

AL
10.0
6.0
13.0
3.51
0.827
9.67
1.13
1.27

>p:.









^;AR:








<»VVi
AU
4.0
6.0
5.0
1.00
0.236
5.00
-0.48
-0.35

AW
8.0
8.0
8.0
0.00
0.000
8.00
0.55
0.69

AZ
14.0
8.0
9.0
3.21
0.709
10.33
1.36
1.50

BA
5.0
6.0
6.0
0.58
0.118
5.67
-0.25
-0.12

BB
5.0
7.0
5.0
1.15
0.236
5.67
-0.25
-0.12

BC
7.0
6.0
6.0
0.58
0.118
6.33
-0.02
0.12

-bgT.








s -J ; C.
BH
6.0
7.0
8.0
1.00
0.236
7.00
0.21
0.35

BK
6.0
7.0
6.0
0.58
0.118
6.33
-0.02
0.12

BL
7.0
7.0
7.0
0.00
0.000
7.00
0.21
0.35

BM
7.0
7.0
7.0
0.00
0.000
7.00
0.21
0.35

BN
6.0
5.0
6.0
0.58
0.118
5.67
-0.25
-0.12

BO
8.0
7.0
8.0
0.58
0.118
7.67
0.44
0.58

CbsI








•/ *
c
7.0
7.0
6.0
0.58
0.118
6.67
0.09
0.23

CA
6.0
6.0
6.0
0.00
0.000
6.00
-0.14
0.00











CE
7.0
6.0
7.0
0.58
0.118
6.67
0.09
0.23

CJ
7.0
6.0
7.0
0.58
0.118
6.67
0.09
0.23

CO
2.0
1.0
2.0
0.58
0.118
1.67
-1.64
-1.50

CP
7.0
7.0
5.0
1.15
0.236
6.33
-0.02
0.12

CS
6.0
6.0
6.0
0.00
0.000
6.00
-0.14
0.00

CX
7.0
6.0
7.0
0.58
0.118
6.67
0.09
0.23

D
6.0
6.0
6.0
0.00
0.000
6.00
-0.14
0.00

;DB









DD
6.0
7.0
7.0
0.58
0.118
6.67
0.09
0.23

DE
10.0
10.0
10.0
0.00
0.000
10.00
1.25
1.39

i'DYt








• ^
DO
6.0
5.0
7.0
1.00
0.236
6.00
-0.14
0.00

DT
7.0
7.0
8.0
0.58
0.118
7.33
0.32
0.46

DZ








• * "
E
5.0
7.0
6.0
1.00
0.236
6.00
-0.14
0.00

EB
6.0
7.0
6.0
0.58
0.118
6.33
-0.02
0.12

EL
6.0
6.0
7.0
0.58
0.118
6.33
-0.02
0.12

;E0T








¦ * _
ER








>• •• r
• =
[*>*
No data submitted
Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
ff = Above control limit
U- = Below control limit
				 		 4
-------
ESD-LV Performance Evaluation: Blind-B, 20-Oct-1998
32/43
Cesium-134








Lab
Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
¦:~EVm









EX
7.0
5.0
6.0
1.00
0.236
6.00
-0.14
0.00

FE
6.0
3.0
4.0
1.53
0.354
4.33
-0.72
-0.58

M?* '7
FJ
5.0
5.0
5.0
0.00
0.000
5.00
-0.48
-0.35
FL
7.0
8.0
6.0
1.00
0.236
7.00
0.21
0.35

Wm








f










GQ
7.0
7.0
6.0
0.58
0.118
6.67
0.09
0.23











m
6.0
7.0
7.0
0.58
0.118
6.67
0.09
0.23

HK
7.0
6.0
7.0
0.58
0.118
6.67
0.09
0.23

HL
7.0
9.0
8.0
1.00
0.236
8.00
0.55
0.69

HP
5.0
6.0
6.0
0.58
0.118
5.67
-0.25
-0.12

I
5.0
6.0
7.0
1.00
0.236
6.00
-0.14
0.00

ID









:;iu
.f








"9/}£v:
JE
TJG.
7.0
,—t.v
16.0
. „ - ' •.
6.0
16.0«
6.0
ifog
0.58
iotio;
0.118
IP*
6.33
*S#t**"*?>•'
i6|do;
-0.02
0.12
1:46
V f
JM
6.0
6.0
6.0
0.00
0.000
6.00
-0.14
0.00

sjn:
3Q








¦ "•
*4-1
•i
JS
6.0
6.0
6.0
0.00
0.000
6.00
-0.14
0.00










•-'life
JY









-*L
7.0
7.0
5.0
1.15
0.236
6.33
-0.02
0.12

•'KE-j!









"4f "V • "" f
•;KT;>








ijV.
kx
6.0
7.0
6.0
0.58
0.118
6.33
-0.02
0.12

L
8.0
6.0
7.0
1.00
0.236
7.00
0.21
0.35











LF
7.0
6.0
7.0
0.58
0.118
6.67
0.09
0.23

•ill"









LR
3.0
5.0
6.0
1.53
0.354
4.67
-0.60
-0.46

M
6.0
6.0
6.0
0.00
0.000
6.00
-0.14
0.00

rMF
MP
MV
:;NA!
NH
NJ
6.0
4.0
6.0
6.0
5.0
5.0
6.0
6.0
5.0
5.0
7.0
6.0
0.58 0.118
0.58 0.118
0.58
0.00
0.118
0.000
5.33
4.67
6.33
6.00
-0.37
-0.60
-0.02
-0.14
-0.23
-0.46
0.12
0.00

.V«vN

• s No data submitted
0 s Insufficient data
TAG SYMBOLS
x s Determined to be an outlier
ft s Above control limit
li = Below control limit
-------
(c	








	^
33/43

ESD-LV Performance Evaluation: Blind-B
20-Oct-1998


r
Cesium-134








Lab



Exper.
Rng anal

Normalized deviation

Res. 1
Res. 2
Res. 3
Sigma
(R + SR) Average
(grand-avg)
(known) Tag




















O
6.0
6.0
6.0
0.00
0.000
6.00
-0.14
0.00

V:6bJ









JOF*








xv. C-
6m
5.0
5.0
6.0
0.58
0.118
5.33
-0.37
-0.23

Ifps;-
'(OY*








^ *
¦I?/';









¦]VB4









PD
13.0
13.0
13.0
0.00
0.000
13.00
2.29
2.42










-
PM
4.0
8.0
7.0
2.08
0.473
6.33
-0.02
0.12

';PW:









Q
7.0
6.0
6.0
0.58
0.118
6.33
-0.02
0.12

QM
4.0
5.0
4.0
0.58
0.118
4.33
-0.72
-0.58

QP
5.0
5.0
5.0
0.00
0.000
5.00
-0.48
-0.35

 j









mi









-;RU|








' -A
RZ
6.0
6.0
7.0
0.58
0.118
6.33
-0.02
0.12

S
5.0
5.0
5.0
0.00
0.000
5.00
-0.48
-0.35

SD
6.0
6.0
5.0
0.58
0.118
5.67
-0.25
-0.12

SF
6.0
6.0
6.0
0.00
0.000
6.00
-0.14
0.00

:*S<3,;









SI
6.0
7.0
7.0
0.58
0.118
6.67
0.09
0.23

TsL:








¦\ •''
SM
7.0
7.0
5.0
1.15
0.236
6.33
-0.02
0.12

SN
6.0
6.0
6.0
0.00
0.000
6.00
-0.14
0.00

SO








v •
sr;









ss
9.0
8.0
7.0
1.00
0.236
8.00
0.55
0.69

sx
6.0
7.0
7.0
0.58
0.118
6.67
0.09
0.23

T
6.0
6.0
6.0
0.00
0.000
6.00
-0.14
0.00

• s No data submitted

TAG SYMBOLS

ft s Above control limit
[0s Insufficient data
X H
Determined to be an outlier

= Below control limit
	v
-------
((	











	^


ESD-LV Performance Evaluation: Blind-B,

20-Oct-1998
34/43
r
Cesium-134











Lab




Exper.
Rng anal



Normalized deviation

Res. 1
Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg) (known) Tag
'I'D
6.0
8.0

7.0
1.00
0.236

7.00
0.21
0.35

SEf












tTNs












TQ
SrvS
6.0
4.0

7.0
1.53
0.354

5.67
-0.25
-0.12

U
7.0
8.0

8.0
0.58
0.118

7.67
0.44
0.58
I
§UA?











9 >:
ftlM












UP
6.0
6.0

6.0
0.00
0.000

6.00
-0.14
0.00

-^Q':












Jpi











¦
|VA1












¥&&&












VH
7.0
9.0

8.0
1.00
0.236

8.00
0.55
0.69

VI
7.0
6.0

6.0
0.58
0.118

6.33
-0.02
0.12

pi












tyS/L












vo
8.0
6.0

7.0
1.00
0.236

7.00
0.21
0.35

VT
6.0
7.0

8.0
1.00
0.236

7.00
0.21
0.35

W
8.0
5.0

6.0
1.53
0.354

6.33
-0.02
0.12

/"*r ?>&>
:w&










fWBD











^ v.>x
"• * ^
WO
2.0
3.0

3.0
0.58
0.118

2.67
-1.29
-1.15

WR
7.0
7.0

7.0
0.00
0.000

7.00
0.21
0.35

WW
6.0
6.0

6.0
0.00
0.000

6.00
-0.14
0.00

X
5.0
5.0

8.0
1.73
0.354

6.00
-0.14
0.00

XA
6.0
6.0

6.0
0.00
0.000

6.00
-0.14
0.00

|











•*4*
XD
5.0
6.0

8.0
1.53
0.354

6.33
-0.02
0.12

XF
5.0
4.0

5.0
0.58
0.118

4.67
-0.60
-0.46

XI
5.0
6.0

6.0
0.58
0.118

5.67
-0.25
-0.12

:0Ji












;XK_
6.0
6.0

7.0
0.58
0.118

6.33
-0.02
0.12

|XL*












jsy












=!»$
.S< \ v<^ ..£...












:xp>;:











X»A S
«#!











•
XT
6.0
6.0

6.0
0.00
0.000

6.00
-0.14
0.00













iV"



Data sorted by Laboratory Average



Average

Tag
Lab
Average
Tag
Lab

Average
Tag
Lab
1.67


CO

4.33

QM


4.67

XF
2.67


WO

4.33

FE


4.67

MV
• = No data submitted


TAG SYMBOLS



IT h Above control limit
I 05 Insufficient data
V* ¦ " —- ¦

x =
Determined to be an outlier


li = Below control limit
-------
35 / 43	ESD-LV Performance Evaluation: Blind-B, 20-Oct-1998
Cesium-134
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
4.67

LR
6.00

JS
6.67

HK
5.00

S
6.00

JM
6.67

m
5.00

QP
6.00

I
6.67

GQ
5.00

FJ
6.00

EX
6.67

DD
5.00

AU
6.00

E
6.67

CX
5.33

OM
6.00

DO
6.67

CJ
5.33

MP
6.00

D
6.67

CE
5.33

AJ
6.00

cs
6.67

C
5.33

AF
6.00

CA
7.00

WR
5.67

XI
6.33

XK
7.00

VT
5.67

TQ
6.33

XD
7.00

VO
5.67

SD
6.33

W
7.00

TD
5.67

QW
6.33

VI
7.00

L
5.67

QT
6.33

SM
7.00

FL
5.67

HP
6.33

RZ
7.00

BM
5.67

BN
6.33

QU
7.00

BL
5.67

BB
6.33

Q
7.00

BH
5.67

BA
6.33

PM
7.00

AE
6.00

XT
6.33

NH
7.33

DT
6.00

XA
6.33

KX
7.67

U
6.00

X
6.33

K
7.67

BO
6.00

WW
6.33

-------
ESD-LV Performance Evaluation: Blind-B, 20-Oct-1998
36/43
Cesium-134
% responding labs	Frequency distribution
Normalized deviation of the mean from the grand average
-------
ESD-LV Performance Evaluation: Blind-B, 20-Oct-1998
37/43
Cesium-137	Statistical Summary	175 Participants
The known value of this nuclide is 50.0 pCi/I with an expected precision of 5.0; the control limits
are 41.3 to 58.7; the warning regions are 41.3 to 44.2 and 55.8 to 58.7
71 (40.6 %) Failed to respond
7(4.0 %) Outliers
Statistic
92(52.6 %) Within all limits
Respondents
.9 %) In warning zone
but within control
Non-outliers
Mean
50.98
Grand Avg 50.88
Std. Dev.
7.33
2.72
Variance
53.73
7.39
% Coef. of Var.
14.38
5.34
% deviation of mean from known value
1.96
1.77
Norm. dev. of mean from known value
0.13
0.32
Median
51.00
51.00
% deviation of median from known value
2.00
2.00
Norm. dev. of median from known value
0.14
0.37
7(6.7 %) More than 3 norm. S.D.
5(4.8 %) Between 2 and 3 norm. S.D.'
; 67(64.4 %) Within 1 norm. S.D.
'	of known value
25(24.0 %) Between 1 and 2 norm. S.D.
-------
38/43

ESD-LV Performance Evaluation: Blind-B, 20-Oct-1998


r
Cesium-137








Lab
Res. 1


Exper.
Rng anal

Normalized deviation

Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
A
52.0
52.0
53.0
0.58
0.118
52.33
0.50
0.81

AE
46.0
48.0
52.0
3.06
0.709
48.67
-0.77
-0.46

AF
52.0
49.0
52.0
1.73
0.354
51.00
0.04
0.35

AH
53.0
51.0
58.0
3.61
0.827
54.00
1.08
1.39

AJ
52.0
50.0
51.0
1.00
0.236
51.00
0.04
0.35

AK
45.0
45.0
45.0
0.00
0.000
45.00
-2.04
-1.73

AL
62.0
52.0
54.0
5.29
1.345
56.00
1.77
2.08

AP









•vAR









AU
46.0
49.0
49.0
1.73
0.354
48.00
-1.00
-0.69

AW
48.0
49.0
49.0
0.58
0.118
48.67
-0.77
-0.46

AZ
50.0
47.0
53.0
3.00
0.709
50.00
-0.31
0.00

BA
52.0
47.0
48.0
2.65
0.591
49.00
-0.65
-0.35

BB
48.0
50.0
49.0
1.00
0.236
49.00
-0.65
-0.35

BC
53.0
53.0
54.0
0.58
0.118
53.33
0.85
1.15

*:bg'








•
BH
53.0
51.0
53.0
1.15
0.236
52.33
0.50
0.81

BK
56.0
55.0
55.0
0.58
0.118
55.33
1.54
1.85

BL
50.0
49.0
53.0
2.08
0.473
50.67
-0.07
0.23

BM
50.0
50.0
51.0
0.58
0.118
50.33
-0.19
0.12

BN
50.0
51.0
53.0
1.53
0.354
51.33
0.16
0.46

BO
53.0
52.0
52.0
0.58
0.118
52.33
0.50
0.81

JbsT









c
48.0
49.0
46.0
1.53
0.354
47.67
-1.11
-0.81

CA
44.0
49.0
50.0
3.21
0.709
47.67
-1.11
-0.81

">CC:









CE
52.0
52.0
51.0
0.58
0.118
51.67
0.27
0.58

CJ
52.0
58.0
59.0
3.79
0.827
56.33
1.89
2.19

'"col

P;6T-~
lilo?
0?58?
5piii8j
13,33$
:13:0H
-12.70;

CP
46.0
45.0
50.0
2.65
0.591
47.00
-L35
-1.04

cs
52.0
54.0
52.0
1.15
0.236
52.67
0.62
0.92

cx
51.0
54.0
52.0
1.53
0.354
52.33
0.50
0.81

D
50.0
51.0
50.0
0.58
0.118
50.33
-0.19
0.12

>dbJ









DD
52.0
50.0
48.0
2.00
0.473
50.00
-0.31
0.00

DE
49.0
50.0
50.0
0.58
0.118
49.67
-0.42
-0.12

;1bi-








•
DO
53.0
55.0
50.0
2.52
0.591
52.67
0.62
0.92

DT
50.0
52.0
49.0
1.53
0.354
50.33
-0.19
0.12

DZ








•
E
51.0
50.0
54.0
2.08
0.473
51.67
0.27
0.58

EB
'"vn'<
64;0
;64;0*
64.0
oj6o
^6!poQ;
:e&00/
?l54?
4:85 "
-cx
EL
49.0
51.0
49.0
1.15
0.236
49.67
-0~42
0.12

EO








• '
EK








/~
• = No data submitted	TAG SYMBOLS	1T = Above control limit
0 = Insufficient data	x s Determined to be an outlier	I! = Below control limit
-------
((	
V

ESD-LV Performance Evaluation: Blind-B, 20-Oct-1998
39/43
Cesium-137








Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation

Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
^EVm
EX""
47.0
44.0
47.0
1.73
0.354
46.00
-1.69
-1.39

FE
49.0
48.0
54.0
3.21
0.709
50.33
-0.19
0.12

P8S






P&v:
FJ
56.0
55.0
55.0
0.58
0.118
55.33
1.54
1.85

FL
.|sU\T
52.0
54.0
51.0
1.53
0.354
52.33
0.50
0.81

Sffli..








$0
GQ
49.0
49.0
49.0
0.00
0.000
49.00
-0.65
-0.35

mm









m
50.0
49.0
48.0
1.00
0.236
49.00
-0.65
-0.35

HK
54.0
53.0
54.0
0.58
0.118
53.67
0.96
1.27

HL
54.0
52.0
54.0
1.15
0.236
53.33
0.85
1.15

HP
49.0
48.0
49.0
0.58
0.118
48.67
-0.77
-0.46

I
51.0
50.0
54.0
2.08
0.473
51.67
0.27
0.58





















>?; itiS"
»X'.—.
'»+i|









JE
51.0
51.0
52.0
0.58
0.118
51.33
0.16
0.46

w&
. w ?;v+^
64:£
p58;Q:
a»?y<*y > rf
[68.0/

£l?3J5;
63133;:
&3i;

mt
JM
50.0
50.0
50.0
0.00
0000
50.00
0.31
om

,4; *







S&Qfl.









^JS^
50.0
51.0
51.0
0.58
0.118
50.67
-0.07
0.23











• <% »..








*£&>
K
50.0
52.0
53.0
1.53
0.354
51.67
0.27
0.58

£*•»¦"¦» f-f ~/{V :
^?KE;7j









f.KT^








^ X i^Nv,
kx
56.0
51.0
58.0
3.61
0.827
55.00
1.43
1.73

L
49.0
51.0
51.0
1.15
0.236
50.33
-0.19
0.12

iGEf








~,.5
LF
MiTP
54.0
56.0
51.0
2.52
0.591
53.67
0.96
1.27

LR
41.0
50.0
49.0
4.93
1.120
46.67
-1.46
-1.15
t
>A '^4-

50.0
52.0
51.0
1.00
0.236
51.00
0.04
0.35

•ijlVpFV








•
MP
46.0
46.0
49.0
1.73
0.354
47.00
-1.35
-1.04

Imt









MV
46.0
46.0
45.0
0.58
0.118
45.67
-1.81
-1.50

:; MY!








• w>
Kt- -H i ,->








V 0^
(' •
VLV
/NAI








i'' V
NH
49.0
49.0
48.0
0.58
0.118
48.67
-0.77
-0.46

NJ
53.0
52.0
51.0
1.00
0.236
52.00
0.39
0.69

• s No data submitted

TAG SYMBOLS

ft s Above control limit
<71 = Tn
cnfTir»iorif fl
ata
V =
Dpfprminp
H fn Ko on nil
f lior
JL = Rolnw
nnnfrnl limit.
-------
(f	








	^
40/43
ESD-LV Performance Evaluation: Blind-B, 20-Oct-1998


Cesium-137







>




Exper.
Rng anal

Normalized deviation

Lab
Res. 1
Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
• Nk ;







" ""

.'•no*








\ *¦
o
54.0
54.0
54.0
0.00
0.000
54.00
1.08
1.39

OB
53.0
52.0
52.0
0.58
0.118
52.33
0.50
0.81

v-< v sy;*"
OF









OM
53.0
52.0
50.0
1.53
0.354
51.67
0.27
0.58

OS^









oy









p:X°
3Sjd 7
35;0
MM'
0232,
•0591
37;67
-4.58;
-4.275
X : V
PB








t.
O \ •'
PD>
101;0£
; :95;0?
>99.0v
3.• >
QT
50.0
48.0
49.0
1.00
0.236
49.00
-0.65
-0.35

QU
44.0
46.0
47.0
1.53
0.354
45.67
-1.81
-1.50

QW
48.0
46.0
48.0
1.15
0.236
47.33
-1.23
-0.92

QX
290
23.0
31.0
4:16
0,945
27.67
-8:04
-7/74 :
'vV
QZ
50.0
53.0
54.0
2.08
0.473
52.33
0.50
0.81

RB







"*

RD
57.0
57.0
57.0
0.00
0.000
57.00
2.12
2.42

RG









RI









RK
50.0
49.0
52.0
1.53
0.354
50.33
-0.19
0.12

RP








^ v~ V
' • * "V
s " , <
RR








'v Li >-
RU








? V •••
-f-iu
RZ
56.0
55.0
53.0
1.53
0.354
54.67
1.31
1.62

S
49.0
51.0
51.0
1.15
0.236
50.33
-0.19
0.12

SD
49.0
49.0
55.0
3.46
0.709
51.00
0.04
0.35

SF
43.0
50.0
46.0
3.51
0.827
46.33
-1.58
-1.27

SG








•'s'-
SI
57.0
52.0
52.0
2.89
0.591
53.67
0.96
1.27

SL









SM
49.0
51.0
50.0
1.00
0.236
50.00
-0.31
0.00

SN
49.0
51.0
52.0
1.53
0.354
50.67
-0.07
°:23

SO









gR









ss
51.0
54.0
54.0
1.73
0.354
53.00
0.73
1.04

sx
52.0
53.0
51.0
1.00
0.236
52.00
0.39
0.69

T
48.0
45.0
47.0
1.53
0.354
46.67
-1.46
-1.15

• =
No data submitted

TAG SYMBOLS

ft = Above control limit
[0S
Insufficient data
x =
Determined to be an outlier
JJ =v Below control limit
	'J
-------
ESD-LV Performance Evaluation: Blind-B, 20-Oct-1998
41/43
Cesium-137
Lab
Res. 1
Res. 2
Exper. Rng anal	Normalized deviation
Res. 3 Sigma (R + SR) Average (grand-avg) (known) Tag
TD
"tiF
V Jv
TQ
V
mm
UP
- W: •
UYl
¦Wei
VH
VI
vb
w
WfE$.
WH
WO
WR
WW
X
XA
XD
XF
XI
A"*, l*". ¦#£•/
Wm.
XK
IXOJ:
-J
£XM?
psr:
:>v.'; ' A'%
XQ
XT
Y ?
«¦¦¦
53.0
49.0
50.0
61.0
50.0
50.0
51.0
50.0
61.0
51.0
50.0
50.0
51.0
52.0
1.73
1.00
0.58
5.20
0.354
0.236
0.118
1.120
51.00
50.00
50.33
58.00
50.0
0.58
0.118
50.33
53.0
53.0
52.0
0.58
0.118
52.67
0.62
0.92
50.0
47.0
51.0
2.08
0.473
49.33
-0.54
-0.23
50.0
51.0
52.0
1.00
0.236
51.00
0.04
0.35
52.0
55.0
53.0
1.53
0.354
53.33
0.85
1.15
52.0
51.0
54.0
1.53
0.354
52.33
0.50
0.81
51.0
49.0
53.0
2.00
0.473
51.00
0.04
0.35
49.0
51.0
47.0
2.00
0.473
49.00
0.65
¦0.35
i6;0
62i0;
yi;64jpj
§£oa:
'0.473
62100
—¦xt- ¦;
'3:85
'VaV " 'v'
4-16
47.0
48.0
57.0
5.51
1.345
50.67
0.07
0.23
54.0
55.0
56.0
1.00
0.236
55.00
1.43
1.73
50.0
50.0
54.0
2.31
0.473
51.33
0.16
0.46
53.0
53.0
55.0
1.15
0.236
53.67
0.96
1.27
57.0
49.0
55.0
4.16
0.945
53.67
0.96
1.27
48.0
49.0
45.0
2.08
0.473
47.33
-1.23
-0.92
0.04
-0.31
-0.19
2.47
-0.19
0.35
0.00
0.12
2.77
0.12
x., ¦>

r£mi£'f
-T ' Vv v
& ..
Hi

Average
Tag
Data sorted by Laboratory Average
Lab
Average
Tag
Lab
Average
Tag
Lab
13.33
27.67
x
x
CO
QX
37.67
43.33
P
QM
45.00
45.67
AK
QU
• = No data submitted
0 s Insufficient data
TAG SYMBOLS
x = Determined to be an outlier
ft = Above control limit
s Below control limit
-------
42 / 43	ESD-LV Performance Evaluation: Blind-B, 20-Oct-1998
Cesium-137
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
45.67

MV
50.33

S
52.33

OB
46.00

EX
50.33

RK
52.33

FL
46.33

SF
50.33

Q
52.33

CX
46.67

T
50.33

L
52.33

BO
46.67

LR
50.33

FE
52.33

BH
47.00

MP
50.33

DT
52.33

A
47.00

CP
50.33

D
52.67

TD
47.33

XA
50.33

BM
52.67

DO
47.33

QW
50.67

W
52.67

cs
47.67

CA
50.67

SN
53.00

SS
47.67

C
50.67

JS
53.33

UP
48.00

AU
50.67

BL
53.33

HL
48.67

NH
51.00

XD
53.33

BC
48.67

HP
51.00

VI
53.67

X
48.67

AW
51.00

U
53.67

WW
48.67

AE
51.00

SD
53.67

SI
49.00

VO
51.00

M
53.67

LF
49.00

QT
51.00

AJ
53.67

HK
49.00

HI
51.00

AF
54.00

O
49.00

GQ
51.33

WR
54.00

AH
49.00

BB
51.33

QP
54.67

RZ
49.00

BA
51.33

JE
55.00

WO
49.33

TQ
51.33

BN
55.00

KX
49.67

EL
51.67

PM
55.33

FJ
49.67

DE
51.67

OM
55.33

BK
50.00

XF
51.67

K
56.00

AL
50.00

SM
51.67

I
56.33

CJ
50.00

JM
51.67

E
57.00

RD
50.00

DD
51.67

CE
58.00

XK
50.00

AZ
52.00

SX
62.00
X
VT
50.33

XT
52.00

NJ
63.33
X
JG
50.33

XI
52.33

VH
64.00
X
EB



52.33

QZ
98.33
X
PD
% responding labs
10-
Frequency distribution
-2	0	+2
Normalized deviation of the mean from the known value
• s No data submitted	TAG SYMBOLS	IT = Above control limit
0 = Insufficient data	x = Determined to be an outlier	II s Below control limit
		-y
-------
ESD-LV Performance Evaluation: Blind-B, 20-Oct-1998
43/43
Cesium-137
% responding labs	Frequency distribution
10-
.hHU.i
t	1—		1	1—		T--"T-""T""T Bib I "	1	"-1—M—I	r®
-6	-4	-2	0	+2	+4	+6
Normalized deviation of the mean from the grand average
-------
United States	Office of Research and	EPA/600/R-99/020
Environmental Protoction	Development	February 1999
Agency	Washington, DC 20460
&EPA Gamma in Water
Performance
Evaluation Study
A Statistical Evaluation of
the November 6, 1998 Data
-------
Gamma in Water
Performance Evaluation Study
November 6, 1998
Environmental Protection Agency
National Exposure Research Laboratory
Environmental Sciences Division
Las Vegas, Nevada
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
OFFICE OF RESEARCH AND DEVELOPMENT
NATIONAL EXPOSURE RESEARCH LABORATORY
ENVIRONMENTAL SCIENCES DIVISION-LAS VEGAS
P.O. BOX 93478
LAS VEGAS, NEVADA 89193-3478
(702/798-2100)
Dear Participant,
Enclosed are the results of the Environmental Sciences Division (ESD-LV)
Performance Evaluation Study for Gamma In Water; November 6,1998.
The known value for each analysis was determined by gravimetric methods,
checked by chemical analyses performed by ESD-LV's Radiochemistry Laboratory,
and compared to the participating laboratories' grand average.
The expected precision, determined by the known value, was taken from
'Table 3. Laboratory Precision: One Standard Deviation Values and Control Limits
for Various Analyses", which is based on data accumulated over the years by the
Performance Evaluation Program, and can be found in the Environmental Radioactivity
Performance Evaluation Studies Program and Radioactive Standards Distribution
Program information brochure.
Please take a few minutes to review this report and the analytical data your
laboratory submitted to us. If there are any apparent discrepancies, please notify us
immediately.
We encourage you to make use of the computer-automated data-entry system
that has been in place for some time now. As the number of participants increases,
and it becomes unrealistic for us to receive results by mail or FAX, the computer
system will be our only avenue for accepting data.
If you have any questions or comments, please send a message via the data-entry
system or contact Stephen Pia at 702/798-2102 or Patricia Honsa at 702/798-2141.
Stephen Pia
Team Leader
RADQA Program
Enclosure
-------
NOTICE
This material has been funded wholly by
the U.S. Environmental Protection Agency.
It has been subjected to the Agency's review,
and has been approved for publication as
an EPA document.
-------
ESD-LV Performance Evaluation: Gamma in Water, 6-Nov-1998	1/37
The following pages consist of separate sections for each of the nuclides in this study with four
parts per section. After the first, each part is separated from the next by a new page or a thick
horizontal bar. The first page of each section is a statistical summary for the nuclide and starts
with a statement of the known value, the control limits, and the warning limits.
The warning limits are placed at two normalized standard deviations above and below the
known value and the control limits are three normalized standard deviations above and below
the known value. If you keep control charts, these values will be useful for anticipating problems
with the accuracy of your analytical methods.
The coin shaped pie chart at the top of the summary page shows the fate of all the samples
sent out in number and percentage terms. The pie chart starts at the top and rotates clockwise.
The first sector represents those participants who submitted analytical results within both the
warning and control limits. The next sector represents those who are in the warning region but
not out of control. The third sector represents those who are out of control, but have passed
the outlier test. The fourth sector represents those who have failed the outlier test. The last
sector represents those participants who have failed to respond properly. This is the case if no
analyti cal results were returned, or less than three determinations were reported, or if the results
were received too late. The reeding on the edge of the coin is spaced at one percent intervals, and
the sector shading becomes darker as the data reliability decreases. Sectors with zero width are
not shown.
The table in the center shows a number of statistical quantities calculated from the submitted
data based on the mean and median values in relation to the known value, both before and after
outlier removal. The lower pie chart uses the same construction as the upper chart and shows
the distribution of properly submitted data in terms of deviation from the known value divided
into sectors representing one, two, three, and greater than three normalized standard deviations.
The second part is an alphabetical listing, in lab-code order, of submitted data and several
calculated quantities. An entry that is shaded has been rejected because of one of the reasons
listed above or failure of the outlier test. The fifth and sixth columns are a measure of laboratory
precision. The Range analysis is a normalized value that you may use to keep precision control
charts. The eighth and ninth columns are the differences from the mean of till non-outliers and
from the known value, respectively. If this value is between 2.0 and 3.0, your analytical process
precision is in the warning zone; if it exceeds 3.0 it is out of control. A tag symbol may appear in
the last column. Each page with tags has a symbol definition summary at the bottom. If there is
no tag symbol, the data is within the control limits, but it may be in the warning zone.
The third part is a three-column listing of result average, tag symbol, and lab-code in average
order excluding those labs not responding properly. In this order, all outliers and out-of-control
results appear at the top or bottom of the list.
The last part is two bar chart displays showing frequency distributions of responding
participants. The first chart places the known value at the center and a bar at each 0.2 unit of
expected precision. The second chart places the mean of the reported measurements at the center
and a bar at each 0.2 unit of standard deviation. In both cases, a bar includes those results within
0.1 unit up to the maximum of six. Any results more than six units from the center value are
shown cumulatively by a shaded bar one past the sixth unit. If the central tendency of the known
value distribution falls away from the center, an error in accuracy is indicated. If the distribution
is broad, poor precision is indicated. The mean value distribution is similar but uses the average
and standard deviation of reported results as its basis.
-------
2/37	ESD-LV Performance Evaluation: Gamma in Water, 6-Nov-1998
v				. i . i						J
The Range Analysis(R + SR) is calculated from the range, mean range and standard error of
the range values. The range is the difference between the maximum and minimum results for the
laboratory. The mean range is calculated by multiplying the expected precision by 1.693(for three
results). The standard error of the range is calculated by multiplying the mean range by 2.575(for
three results), subtracting the mean range from this product, and dividing the result by 3. If the
range is greater than the mean range, then the range analysis is calculated by subtracting the
mean range from the range, dividing the result by the standard error of the range and adding 1.
If the mean range is greater than or equal to the range, then the range analysis is calculated by
dividing the range by the mean range.
The normalized deviation of the mean from the grand average is calculated from the deviation
of the mean from the grand average and the standard error of the mean values. The deviation of
the mean from the grand average is calculated by subtracting the grand average from the
average of the laboratory's three results. The standard error of the mean is calculated by
dividing the expected precision by the square root of 3(the number of results). The normalized
deviation of the mean from the grand average is calculated by dividing the deviation of the mean
from the grand average by the standard error of the mean.
The normalized deviation of the mean from the known value is calculated from the deviation of
the mean from the known value and the standard error of the mean values. The deviation of the
mean from the known value is calculated by subtracting the known value from the average of the
laboratory's three results. The standard error of the mean is calculated by dividing the expected
precision by the square root of 3(the number of results). The normalized deviation of the mean
from the known value is calculated by dividing the deviation of the mean from the known value by
the standard error of the mean.
A complete explanation of the statistical calculations involved in the report may be found in
the Environmental Radioactivity Performance Evaluation Studies Program information brochure
[Draft Revision of EPA-600/4-81-004], available from Patricia Honsa, ESD-LV, 702/798-2141.
-------
ESD-LV Performance Evaluation: Gamma in Water, 6-Nov-1998	3/37
v
"		—v
Cobalt-60	Statistical Summary	166 Participants
The known value of this nuclide is 38.0 pCi/I with an expected precision of 5.0; the control limits
are 29.3 to 46.7; the warning regions are 29.3 to 32.2 and 43.8 to 46.7
Statistic	Respondents	Non-outliers
Mean
44.12
Grand Avg 38.17
Std. Dev.
67.92
2.38
Variance
4613.47
5.67
% Coef. of Var.
153.96
6.24
% deviation of mean from known value
16.10
0.44
Norm. dev. of mean from known value
0.09
0.07
Median
38.00
38.00
% deviation of median from known value
0.00
0.00
Norm. dev. of median from known value
0.00
0.00
, 110(80.3 %) Within 1 norm. S.D.
9
of known value
-------
{? 	
4/37	ESD-LV Performance Evaluation: Gamma in Water, 6-Nov-1998
Cobalt-60
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known)
A
40.0
39.0
39.0
0.58
0.118
39.33
0.40
0.46
AE
39.0
41.0
37.0
2.00
0.473
39.00
0.29
0.35
AF
41.0
39.0
39.0
1.15
0.236
39.67
0.52
0.58
AH
37.0
33.0
31.0
3.06
0.709
33.67
-1.56
-1.50









AJ
46.0
41.0
43.0
2.52
0.591
43.33
1.79
1.85
AK
39.0
39.0
38.0
0.58
0.118
38.67
0.17
0.23
AL
43.0
44.0
38.0
3.21
0.709
41.67
1.21
1.27
.;:ab








AU
38.0
37.0
35.0
1.53
0.354
36.67
-0.52
-0.46
AW
37.0
37.0
37.0
0.00
0.000
37.00
-0.40
-0.35
AY
34.0
34.0
33.0
0.58
0.118
33.67
-1.56
-1.50
AZ
36.0
35.0
32.0
2.08
0.473
34.33
-1.33
-1.27
BA
36.0
37.0
34.0
1.53
0.354
35.67
-0.87
-0.81
BB
39.0
38.0
39.0
0.58
0.118
38.67
0.17
0.23
BC
35.0
35.0
35.0
0.00
0.000
35.00
-1.10
-1.04
•bgJ








BH
38.0
37.0
38.0
0.58
0.118
37.67
-0.17
-0.12
BK
40.0
40.0
41.0
0.58
0.118
40.33
0.75
0.81
BL
42.0
44.0
37.0
3.61
0.827
41.00
0.98
1.04
BM
37.0
38.0
38.0
0.58
0.118
37.67
-0.17
-0.12
BN
45.0
37.0
35.0
5.29
1.345
39.00
0.29
0.35
BO
38.0
38.0
37.0
0.58
0.118
37.67
-0.17
-0.12
C
37.0
35.0
35.0
1.15
0.236
35.67
-0.87
-0.81
CA
40.0
38.0
37.0
i.53
0.354
38.33
0.06
0.12









CE
36.0
40.0
37.0
2.08
0.473
37.67
-0.17
-0.12
CJ
42.0
40.0
37.0
2.52
0.591
39.67
0.52
0.58
CO
38.0
46.0
41.0
4.04
0.945
41.67
1.21
1.27
CP
37.0
40.0
39.0
1.53
0.354
38.67
0.17
0.23
cs
38.0
37.0
37.0
0.58
0.118
37.33
-0.29
-0.23
riCXl

MqI
1®
Ilf!
^0.236 \
lorn,

-JS.12
D
38.0
38.0
36.0
1.15
0 236
37.33
-0.29
-0.23
DD
38.0
37.0
35.0
1.53
0.354
36.67
-0.52
-0.46
DE
36.0
37.0
37.0
0.58
0.118
36.67
-0.52
-0.46
DH
38.0
36.0
37.0
1.00
0.236
37.00
-0.40
-0.35
DO
40.0
36.0
39.0
2.08
0.473
38.33
0.06
0.12
DR
41.0
36.0
40.0
2.65
0.591
39.00
0.29
0.35
DT
35.0
40.0
36.0
2.65
0.591
37.00
-0.40
-0.35
E
38.0
40.0
38.0
1.15
0.236
38.67
0.17
0.23
/•eXC








EB
43.0
44.0
43.0
0.58
0.118
43.33
1.79
1.85
EL
38.0
37.0
36.0
1.00
0.236
37.00
-0.40
-0.35
'.¥w"








EX
35.0
38.0
34.0
2.08
0.473
35.67
-0.87
-0.81
• = No data submitted	TAG SYMBOLS	IT = Above control limit
0 s Insufficient data	x - Determined to be an outlier	it = Below control limit
-------
f(	
ESD-LV Performance Evaluation: Gamma in Water,
6-Nov-1998
			^
5/37
f Cobalt-60








Lab
Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
FE
37.0
37.0
40.0
1.73
0.354
38.00
-0.06
0.00

FJ
38.0
38.0
38.0
0.00
0.000
38.00
-0.06
0.00

FL
JGI||
35.0
39.0
38.0
2.08
0.473
37.33
-0.29
-0.23

GL
38.0
37.0
38.0
0.58
0.118
37.67
-0.17
-0.12

GQ
38.0
38.0
38.0
0.00
0.000
38.00
-0.06
0.00

HE
38.0
36.0
38.0
1.15
0.236
37.33
-0.29
-0.23

m
36.0
40.0
36.0
2.31
0.473
37.33
-0.29
-0.23

UK
38.0
39.0
37.0
1.00
0.236
38.00
-0.06
0.00

HL
40.0
40.0
40.0
0.00
0.000
40.00
0.64
0.69











i ~
35.0
35.0
37.0
1.15
0.236
35.67
-0.87
-0.81

IU
JE
38.0
39.0
38.0
0.58
0.118
38.33
0.06
0.12

40.0
38.0
38.0
1.15
0.236
38.67
0.17
0.23

JG
45.0
41.0
44.0
2.08
0.473
43.33
1.79
1.85

JM
37.0
37.0
38.0
0.58
0.118
37.33
-0.29
-0.23

JS
38.0
38.0
38.0
0.00
0.000
38.00
-0.06
0.00

JY
40.0
39.0
40.0
0.58
0.118
39.67
0.52
0.58

K
39.0
37.0
37.0
1.15
0.236
37.67
-0.17
-0.12

KH
38.0
40.0
41.0
1.53
0.354
39.67
0.52
0.58

KL
38.0
38.0
37.0
0.58
0.118
37.67
-0.17
-0.12

KX
37.0
39.0
37.0
1.15
0.236
37.67
-0.17
-0.12

L
40.0
37.0
37.0
1.73
0.354
38.00
-0.06
0.00

LE
38.0
38.0
47.0
5.20
1.120
41.00
0.98
1.04

LF
39.0
38.0
37.0
1.00
0.236
38.00
-0.06
0.00

LR
36.0
37.0
37.0
0.58
0.118
36.67
-0.52
-0.46

M
34.0
39.0
40.0
3.21
0.709
37.67
-0.17
-0.12

MP
41.0
41.0
38.0
1.73
0.354
40.00
0.64
0.69

MT
38.0
38.0
38.0
0.00
0.000
38.00
-0.06
0.00

MV
40.0
41.0
38.0
1.53
0.354
39.67
0.52
0.58

MX
37.0
38.0
37.0
0.58
0.118
37.33
-0.29
-0.23

N
40.0
39.0
38.0
1.00
0.236
39.00
0.29
0.35

NH
36.0
35.0
37.0
1.00
0.236
36.00
-0.75
-0.69

NJ
38.0
37.0
37.0
0.58
0.118
37.33
-0.29
-0.23












v45i0j
mm&
mm


mm
4:56
4-62 v

NP
34.0
37.0
37.0
1.73
0.354
36.00
-0.75
-0.69

O
39.0
'73;0
40.0
|7J5}0j
40.0
0.58
|lil5-:
0.118
mmt
39.67
¦uM
0.52
12153
0.58
12.59
X!:-;'
OB
38.0
39.0
37.0
1.00
0.236
38.00
-0.06
0.00

OM
46.0
45.0
45.0
0.58
0.118
45.33
2.48
2.54

OT
38.0
36.0
39.0
1.53
0.354
37.67
-0.17
-0.12

P
MIL.
38.0
38.0
W f WMJVtW!'* ('~WW f
41.0
1.73
0.354
39.00
0.29
0.35

• s No data submitted	TAG SYMBOLS	ft = Above control limit
0 = Insufficient data	x s Determined to be an outlier	e= Below control limit
-------
6/37	ESD-LV Performance Evaluation: Gamma in Water, 6-Nov-1998
V.		.	.				
Cobalt-60
Exper. Rng anal	Normalized deviation
Lab
Res. 1
Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
PD
38.0
40.0
40.0
1.15
0.236
39.33
0.40
0.46
PE.








PM
38.0
37.0
40.0
1.53
0.354
38.33
0.06
0.12
PW
36.0
36.0
36.0
0.00
0.000
36.00
-0.75
-0.69
PX
39.0
32.0
39.0
4.04
0.827
36.67
-0.52
-0.46
Q
39.0
42.0
41.0
1.53
0.354
40.67
0.87
0.92
QM
37.0
39.0
40.0
1.53
0.354
38.67
0.17
0.23
QP
37.0
34.0
32.0
2.52
0.591
34.33
-1.33
-1.27
QT
35.0
34.0
36.0
1.00
0.236
35.00
-1.10
-1.04
QU
34.0
32.0
37.0
2.52
0.591
34.33
-1.33
-1.27
QW
33.0
33.0
34.0
0.58
0.118
33.33
-1.67
-1.62
QX
40.0
40.0
41.0
0.58
0.118
40.33
0.75
0.81
QZ
40.0
40.0
38.0
1.15
0.236
39.33
0.40
0.46
R
38.0
39.0
38.0
0.58
0.118
38.33
0.06
0.12
RK
42.0
36.0
37.0
3.21
0.709
38.33
0.06
0.12
RO
36.0
36.0
37.0
0.58
0.118
36.33
-0.64
-0.58
rr3







/•r








-
RX
lafl
40.0
41.0
39.0
1.00
;2{3i;':
0.236
$473]
40.00
28|33/
0.64
vJW w .yvvAW
0.69
SSI
s'*"*
36.0
37.0
si.o
0.58"
0.118
36.67
-0.52
-0.46
SD
36.0
38.0
37.0
1.00
0.236
37.00
-0.40
-0.35
SF
40.0
36.0
35.0
2.65
0.591
37.00
-0.40
-0.35
SI
37.0
44.0
41.0
3.51
0.827
40.67
0.87
0.92
SM
42.0
36.0
42.0
3.46
0.709
40.00
0.64
0.69
SN
37.0
36.0
32.0
2.65
0.591
35.00
-1.10
-1.04
SR
38.0
32.0
36.0
3.06
0.709
35.33
-0.98
-0.92
ss
38.0
41.0
39.0
1.53
0.354
39.33
0.40
0.46
sv
39.0
39.0
38.0
0.58
0.118
38.67
0.17
0.23
sx
37.0
40.0
38.0
1.53
0.354
38.33
0.06
0.12
T
38.0
37.0
37.0
0.58
0.118
37.33
-0.29
-0.23
TC
37.0
38.0
37.0
0.58
0.118
37.33
-0.29
-0.23
TD
38.0
49.0
41.0
5.69
1.570
42.67
1.56
162
Tfig







*
TO
29.0
54.0
50.0
13.43
4.721
44.33
2.14
2.19
TQ
37.0
37.0
34.0
1.73
0.354
36.00
-0.75
-0.69
TR
30.0
30.0
28.0
1.15
0.236
29.33
-3.06
-3.00
TW
44.0
41.0
51.0
5.13
1.345
45.33
2.48
2.54
U
40.0
40.0
38.0
1.15
0.236
39.33
0.40
0.46









UP
40.0
38.0
37.0
1.53
0.354
38.33
0.06
0.12
Suit:








uv
37.0
37.0
36.0
0.58
0.118
36.67
-0.52
-0.46
ux
36.0
39.0
37.0
1.53 ^
->-¥v
0.354
\ : \ >
' ix.'--', .. # ' ' I.
37.33
„ i>;29__
/ 11 V 5;
/.v ,s ' ' /. S*
-0.23
• s No data submitted	TAG SYMBOLS	IT s Above control limit
0 5 Insufficient data	x = Determined to be an outlier	= Below control limit
	—										-y
-------
ESD-LV Performance Evaluation: Gamma in Water, 6-Nov-1998	7/37
V
Cobalt-60	~	~~~ ~
Exper. Rng anal	Normalized deviation
Lab
Res. 1
Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
4VA&







* m *;V
vc
41.0
40.0
41.0
0.58
0.118
40.67
0.87
0.92
VE
37.0
37.0
37.0
0.00
0.000
37.00
-0.40
-0.35
VH
39.0
37.0
40.0
1.53
0.354
38.67
0.17
0.23
VI
40.0
41.0
39.0
1.00
0.236
40.00
0.64
0.69
MM








vo
31.0
42.0
40.0
5.86
1.570
37.67
-0.17
-0.12
vs
37.0
39.0
37.0
1.15
0.236
37.67
-0.17
-0.12
w
36.0
38.0
36.0
1.15
0.236
36.67
-0.52
-0.46
WD
37.0
38.0
38.0
0.58
0.118
37.67
-0.17
-0.12
1
0'M
V V







1v <1 '¦•is.'s,
wm








WR
36.0
37.0
39.0
1.53
0.354
37.33
-0.29
-0.23
pwsl







x
WW
37.0
39.0
38.0
1.00
0.236
38.00
-0.06
0.00









x'~"
42.0
50.0
44.0
4.16
0.945
45.33
2.48
2.54
XA
40.0
41.0
41.0
0.58
0.118
40.67
0.87
0.92
XB
'
37.0
37.0
36.0
0.58
0.118
36.67
-0.52
-0.46









XD
41.0
39.0
41.0
1.15
0.236
40.33
0.75
0.81
XF
35.0
38.0
37.0
1.53
0.354
36.67
-0.52
-0.46
fjKOi








XI
36.0
37.0
37.0
0.58
0.118
36.67
-0.52
v1^. ;; '¦
-0.46
XK
38.0
42.0
42.0
2.31
0.473
40.67
0.87
0.92








•Iff,
XT
37.0
38.0
36.0
1.00
0.236
37.00
-0.40
-0.35
"*XU§
84&0I
:82£10
MM
14vl5
WM
A /S-#* - < V.
8311671
2®8f
hM Wf ^(v>u>MWMy
274:93 :xg;:
Y
38.0
35.0
36.0
1.53
0.354
36.33
" -0 64
' -0.58	
B
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
20.33
X
CX
35.00

BC
36.33

RO
28.33
X
RZ
35.33

SR
36.67

XI
29.33

TR
35.67

I
36.67

XF
33.33

QW
35.67

EX
36.67

XB
33.67

AY
35.67

C
36.67

W
33.67

AH
35.67

BA
36.67

uv
34.33

QU
36.00

TQ
36.67

s
34.33

QP
36.00

PW
36.67

PX
34.33

AZ
36.00

NP
36.67

LR
35.00

SN
36.00

NH
36.67

DE
35.00

QT
36.33

Y
36.67

DD
• = No data submitted	TAG SYMBOLS	ft = Above control limit
t 0 = Insufficient data	x = Determined to be an outlier	11 = Rplnw mntml limif
-------
f 8/37	ESD-LV Performance Evaluation: Gamma in Water, 6-Nov-1998
Cobalt-60
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
36.67

AU
38.00

WW
39.33

A
37.00

XT
38.00

OB
39.67

O
37.00

VE
38.00

MT
39.67

MV
37.00

SF
38.00

LF
39.67

KH
37.00

SD
38.00

L
39.67

JY
37.00

EL
38.00

JS
39.67

CJ
37.00

DT
38.00

HK
39.67

AF
37.00

DH
38.00

GQ
40.00

VI
37.00

AW
38.00

FJ
40.00

SM
37.33

WR
38.00

FE
40.00

RX
37.33

UX
38.33

UP
40.00

MP
37.33

TC
38.33

sx
40.00

HL
37.33

T
38.33

RK
40.33

XD
37.33

NJ
38.33

R
40.33

QX
37.33

MX
38.33

PM
40.33

BK
37.33

JM
38.33

IU
40.67

XK
37.33

HI
38.33

DO
40.67

XA
37.33

HE
38.33

CA
40.67

VC
37.33

FL
38.67

VH
40.67

SI
37.33

D
38.67

sv
40.67

Q
37.33

CS
38.67

QM
41.00

LE
37.67

WD
38.67

JE
41.00

BL
37.67

vs
38.67

E
41.67

CO
37.67

vo
38.67

CP
41.67

AL
37.67

OT
38.67

BB
42.67

TD
37.67

M
38.67

AK
43.33

JG
37.67

KX
39.00

P
43.33

EB
37.67

KL
39.00

N
43.33

AJ
37.67

K
39.00

DR
44.33

TO
37.67

GL
39.00

BN
45.33

X
37.67

CE
39.00

AE
45.33

TW
37.67

BO
39.33

U
45.33

OM
37.67

BM
39.33

SS
51.33
X
NO
37.67

BH
39.33

QZ
74.33
X
OA



39.33

PD
831.67
X
XU
• s No data submitted TAG SYMBOLS ft = Above control limit
0 = Insufficient data 	x s Determined to be an outlier	II = Below control limit
-------
ESD-LV Performance Evaluation: Gamma in Water, 6-Nov-1998	9 / 37
^ . . — ¦ . ¦ 	 —	 . -¦ ..... . ¦ . — ¦
Cobalt-60
%
20
10
0
%
20
10
0
responding labs
-™—V-
Frequency distribution
-r~
-2
¦W.w ¦
-r~
+4
—r~
+6
+2
Normalized deviation of the mean from the known value
responding labs ¦	Frequency distribution
Injli
li
| — j	| EH	-1 ^ -1 ^	-	[ m
-6	-4	-2	0	+2	+4	+6
Normalized deviation of the mean from the grand average
-------
f
ESD-LV Performance Evaluation: Gamma in Water, 6-Nov-1998	10/37
—	—.	-	...	-i	.i	ii	i.i
r	.
Zinc-65	Statistical Summary	166 Participants
The known value of this nuclide is 131.0 pCi/1 with an expected precision of 13.0; the control limits
are 108.4 to 163.6; the warning regions are 108.4 to 116.0 and 146.0 to 153.6
Statistic	Respondents	Non-outliers
Mean
163.02
Grand Avg 137.21
Std. Dev.
303.49
7.65
Variance
92103.49
58.45
% Coef. of Var.
186.16
5.57
% deviation of mean from known value
24.44
4.74
Norm. dev. of mean from known value
0.11
0.81
Median
137.33
137.33
% deviation of median from known value
4.83
4.83
Norm. dev. of median from known value
0.02
0.83
-------
	^
11/37	ESD-LV Performance Evaluation: Gamma in Water, 6-Nov-1998
				_____			.	J
¦ - —
Zinc-65
Lab
Res. I
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
A
141.0
143.0
140.0
1.53
0.136
141.33
0.55
1.38
AE
134.0
130.0
140.0
5.03
0.454
134.67
-0.34
0.49
AF
139.0
143-0
140.0
2.08
0.182
140.67
0.46
1.29
AH
118.0
139.0
121.0
11.36
0.954
126.00
-1.49
-0.67
ImT;







«¦
AJ
153.0
135.0
135.0
10.39
0.818
141.00
0.51
1.33
AK
133.0
136.0
137.0
2.08
0.182
135.3 3
-0.25
0.58
AL
129.0
127.0
131.0
2.00
0.182
129.00
-1.09
-0.27
^ ap;








AU
122.0
133.0
131.0
5.86
0.500
128.67
-1.14
-0.31
AW
135.0
132.0
130.0
2.52
0.227
132.33
-0.65
0.18
AY
135.0
134.0
127.0
4.36
0.363
132.00
-0.69
0.13
AZ
132.0
139.0
134.0
3.61
0.318
135.00
-0.29
0.53
BA
120.0
128.0
130.0
5.29
0.454
126.00
-1.49
-0.67
BB
145.0
143.0
143.0
1.15
0.091
143.67
0.86
1.69
BC
139.0
138.0
138.0
0.58
0.045
138.33
0.15
0.98
:BG








BH
154.0
151.0
155.0
2.08
0.182
153.33
2.15
2.98
BK
152.0
152.0
152.0
0.00
0.000
152.00
1.97
2.80
BL
130.0
130.0
137.0
4.04
0.318
132.33
-0.65
0.18
BM
135.0
134.0
140.0
3.21
0.273
136.33
-0.12
0.71
BN
136.0
150.0
132.0
9.45
0.818
139.33
0.28
1.11
BO
136.0
136.0
130.0
3.46
0.273
134.00
-0.43
0.40
C
130.0
139.0
133.0
4.58
0.409
134.00
-0.43
0.40
CA
116.0
117.0
130.0
7.81
0.636
121.00
-2.16
-1.33
V'- > v -V ¦ •
cc








CE
138 .U
134.U
14U.U
iJ.Ub
0.273
137.33
0.02
0.84
CJ
153.0
132.0
137.0
10.97
0.954
140.67
0.46
1.29
CO
145.0
162.0
150.0
8.74
0.772
152.33
2.02
2.84
CP
143.0
154.0
142.0
6.66
0.545
146.33
1.22
2.04
cs
140.0
141.0
142.0
1.00
0.091
141.00
0.51
1.33
:CK:

WWi
¦MiM
MM
pmr

!-&82;
x ;/
D
140.0
138.0
137.0
1.53
0.136
138,33
0.15
0.98
DD
137.0
140.0
135.0
2.52
0.227
137.33
0.02
0.84
DE
134.0
135.0
135.0
0.58
0.045
134.67
-0.34
0.49
DH
127.0
128.0
125.0
1.53
0.136
126.67
-1.40
-0.58
DO
146.0
141.0
122.0
12.66
1.172
136.33
-0.12
0.71
DR
138.0
144.0
130.0
7.02
0.636
137.33
0.02
0.84
DT
144.0
136.0
141.0
4.04
0.363
140.33
0.42
1.24
E
140.0
143.0
142.0
1.53
0.136
141.67
0.59
1.42
WC;








EB
170.0
1*70.0
170.0
;0.00
IWq:?
SiP/Qo'l
4i37
5:20 x
EL
133.0
128.0
132.0
2.65
0.227
131.00
-0.83
0.00
EW ,







^ •
EX
130.0
118.0
136.0
9.17
0.818
128.00
-1.23
-0.40
• 3 No data submitted
9} s T"sr,mc!ent data
y. =
TAG SYMBOLS
Determined to be an outlier
If s Above control limit
II s Below control limit
-------
ESD-LV Performance Evaluation: Gamma in Water, 6-Nov-1998	12/37
I 	
/¦ ¦ ¦
Zinc-65













Exper.
Rng anal

Normalized deviation

Lab
Res. 1
Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
FE
120.0
130.0
140.0
10.00
0.909
130.00
-0.96
-0.13

FJ
143.0
140.0
136.0
3.51
0.318
139.67
0.33
1.15

FL
137.0
139.0
145.0
4.16
0.363
140.33
0.42
1.24

IgiJ








GL
141.0
135.0
136.0
3.21
0.273
137.33
0.02
0.84

GQ
139.0
139.0
139.0
0.00
0.000
139.00
0.24
1.07

HE
134.0
134.0
136.0
1.15
0.091
134.67
-0.34
0.49

HI
130.0
126.0
125.0
2.65
0.227
127.00
-1.36
-0.53

HK
141.0
139.0
144.0
2.52
0.227
141.33
0.55
1.38

HL
131.0
135.0
134.0
2.08
0.182
133.33
-0.52
0.31










-'m
r'
131.0
134.0
133.0
1.53
0.136
132.67
-0.61
0.22



,#l'3i0/

:o$Bl
'v, ~V"i v\ £ •
ft* w+J-yT"*
>10.045;
;;.:il3i67;;-
v.' v"*-;; •>¦?}*'' "*"
*163463

w
JE
145.0
143.0
143.0
1.15
0.091
143.67
0.86
1.69

JG
160.0
162.0
159.0
1.53
0.136
160.33
3.08
3.91
tr
JM
132.0
135.0
135.0
1.73
0.136
134.00
-0.43
0.40

JS
137.0
141.0
139.0
2.00
0.182
139.00
0.24
1.07

JY
146.0
150.0
151.0
2.65
0.227
149.00
1.57
2.40

K
138.0
136.0
138.0
1.15
0.091
137.33
0.02
0.84

KH
127.0
130.0
130.0
1.73
0.136
129.00
-1.09
-0.27

KL
138.0
139.0
137.0
1.00
0.091
138.00
0.11
0.93

KX
140.0
137.0
126.0
7.37
0.636
134.33
-0.38
0.44

L
141.0
128.0
136.0
6.56
0.591
135.00
-0.29
0.53

LE
180.0
135.0
145.0
23.63
2.990
153.33
2.15
2.98

LF
150.0
140.0
150.0
5.77
0.454
146.67
1.26
2.09

LR
134.0
138.0
135.0
2.08
0.182
135.67
-0.21
0.62

M
144.0
146.0
152.0
4.16
0.363
147.33
1.35
2.18

MP
134.0
130.0
137.0
3.51
0.318
133.67
-0.47
0.36

MT
142.0
144.0
138.0
3.06
0.273
141.33
0.55
1.38

MV
140.0
133.0
141.0
4.36
0.363
138.00
0.11
0.93

MX
120.0
126.0
124.0
3.06
0.273
123.33
-1.85
-1.02

N
134.0
136.0
142.0
4.16
0.363
137.33
0.02
0.84

NH
145.0
146.0
148.0
1.53
0.136
146.33
1.22
2.04

NJ
137.0
135.0
136.0
1.00
0.091
136.00
-0.16
0.67

mm








NO
150.0
155.0
160.0
5.00
0.454
155.00
2.37
3.20
n
NP
131.0
141.0
133.0
5.29
0.454
135.00
-0.29
0.53

O
140.0
142.0
142.0
1.15
0.091
141.33
0.55
1.38

p-v w
mx
wmi
< Jyi. i-
WE
|27M
l2i89;
Wf'-yytso- -*y wvtv*
$.227i
1 !7» , jr.J
Mm
L8i27:J
19dp";

OB








OM
141.0
145.0
148.0
3.51
0.318
144.67
0.99
1.82

OT
129.0
119.0
142.0
11.53
1.086
130.00
-0.96
-0.13

P
131.0
127.0
125.0
3.06
0.273
127.67
-1.27
-0.44

Kg'-iyv &• ••« -
*PB;









• e No data submitted

TAG SYMBOLS

1t e Above control limit
k 0 = Insufficient data 	x s Determined to be an outlier	-U- = Below control limit
-------
13/37
ESD-LV Performance Evaluation: Gamma in Water, 6-Nov-1998
Zinc-65
Exper. Rng anal
Normalized deviation
Lab
Res. 1
Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known)
PD
140.0
139.0
125.0
8.39
0.682
134.67
-0.34
0.49









PM
147.0
128.0
144.0
10.21
0.863
139.67
0.33
1.15
PW
133.0
130.0
131.0
1.53
0.136
131.33
-0.78
0.04
PX
127.0
128.0
132.0
2.65
0.227
129.00
-1.09
-0.27
Q
129.0
129.0
125.0
2.31
0.182
127.67
-1.27
-0.44
QM
138.0
146.0
143.0
4.04
0.363
142.33
0.68
1.51
QP
130.0
134.0
127.0
3.51
0.318
130.33
-0.92
-0.09
QT
134.0
135.0
134.0
0.58
0.045
134.33
-0.38
0.44
QU
116.0
118.0
119.0
1.53
0.136
117.67
-2.60
-1.78
QW
116.0
120.0
116.0
2.31
0.182
117.33
-2.65
-1.82
QX
142.0
138.0
136.0
3.06
0.273
138.67
0.19
1.02
QZ
143.0
144.0
144.0
0.58
0.045
143.67
0.86
1.69
R
141.0
144.0
142.0
1.53
0.136
142.33
0.68
1.51
RK
150.0
130.0
140.0
10.00
0.909
140.00
0.37
1.20
RO
153.0
134.0
157.0
12.29
1.086
148.00
1.44
2.26
mm

















RX
124.0
123.0
125.0
1.00
0.091
124.00
-1.76
-0.93
RZ
126.0
139.0
148.0
11.06
1.000
137.67
0.06
0.89
S
134.0
135.0
133.0
1.00
0.091
134.00
-0.43
0.40
SD
141.0
137.0
142.0
2.65
0.227
140.00
0.37
1.20
SF
135.0
126.0
133.0
4.73
0.409
131.33
-0.78
0.04
SI
146.0
152.0
141.0
5.51
0.500
146.33
1.22
2.04
SM
144.0
133.0
143.0
6.08
0.500
140.00
0.37
1.20
SN
137.0
134.0
116.0
11.36
0.954
129.00
-1.09
-0.27
SR
134.0
139.0
132.0
3.61
0.318
135.00
-0.29
0.53
ss
137.0
151.0
148.0
7.37
0.636
145.33
1.08
1.91
sv
143.0
130.0
137.0
6.51
0.591
136.67
-0.07
0.75
sx
150.0
145.0
135.0
7.64
0.682
143.33
0.82
1.64
T
120.0
140.0
139.0
11.27
0.909
133.00
-0.56
0.27
TC
130.0
128.0
130.0
1.15
0.091
129.33
-1.05
-0.22
TD
128.0
146.0
143.0
9.64
0.818
139.00
0.24
1.07










130.0
166.0
155.0
18.45
2.211
150.33
1.75
2.58
TQ
134.0
136.0
143.0
4.73
0.409
137.67
0.06
0.89
TR
123.0
123.0
134.0
6.35
0.500
126.67
-1.40
-0.58
rm
C153i0N
gPJ

ills]
Jp05G
16i>.33
»»(!'
3.75
&
u
134.0
135.0
134.0
0.58
0.045
134.33
-0.38
0.44
>UM. .








UP
137.0
139.0
140.0
1.53
0.136
138.67
0.19
1.02









UV
133.0
115.0
123.0
9.02
0.818
123.67
-1.80
-0.98
ux
140.0
145.0
136.0
4.51
0.409
140.33
0.42
1.24









X A
• = No data submitted
0 = Insufficient data
x s
TAG SYMBOLS
Determined to be an outlier
ft = Above control limit
II = Below control limit
-------
ESD-LV Performance Evaluation: Gamma in Water, 6-Nov-1998
14/37
3
Zinc-65
Lab
Exper. Rng anal	Normalized deviation
Res. 1 Res. 2 Res. 3 Sigma (R + SR) Average (grand-avg) (known) Tag


vc
151.0
144.0
147.0
3.51
0.318
147.33
1.35
2.18

VE
141.0
151.0
157.0
8.08
0.727
149.67
1.66
2.49

VH
145.0
145.0
144.0
0.58
0.045
144.67
0.99
1.82

VI
nil
vo
146.0
136.0
147.0
118.0
144.0
139.0
1.53
11.36
0.136
0.954
145.67
131.00
1.13
-0.83
1.95
0.00

vs
135.0
137.0
134.0
1.53
0.136
135.33
-0.25
0.58

w
126.0
127.0
130.0
2.08
0.182
127.67
-1.27
-0.44

WD
wm
'if?WJM
M
130.0
135.0
128.0
3.61
0.318
131.00
-0.83
0.00

MR
W&:
lOSiOt
¦ it
10^0
mM
I4:d4>

10*33
-3^98:;;c
t.'S't'-'y F'S 'x
^15;
km
K,
WW
130.0
134.0
145.0
7.77
0.682
136.33
-0.12
0.71

IpF









jf"
135.0
115.0
147.0
16.17
1.865
132.33
-0.65
0.18

XA
156.0
157.0
126.0
17.62
1.778
146.33
1.22
2.04

XB
149.0
148.0
137.0
6.66
0.545
144.67
0.99
1.82

T%V"*",5V
4xg?









XD
138.0
146.0
143.0
4.04
0.363
142.33
0.68
1.51

XF
129.0
145.0
138.0
8.02
0.727
137.33
0.02
0.84

y»*y ;








• . rss~*>
XI
140.0
140.0
140.0
0.00
0.000
140.00
0.37
1.20

XK
-vcy
146.0
139.0
148.0
4.73
0.409
144.33
0.95
1.78
¦ 		
.A!*
XT
SsxiH-
*  . v
126.0
136.0
3672;0{v
«• 'St.•.vtAJi'jf
128.0
3.79
v.v*
4.16
0.318
h:72T
0.363
138.67
36pSf
129.33
0.19
;470;60
: v'v^r.'Si .
-1.05
1.02
-0.22
$X&<;
.«• SC. .
Data sorted by Laboratory Average
Average
Tae
Lab
Average Tag
Lab
Average
Tag Lab
13.67
X
IU
126.67
TR
129.00
AL
71.00
X
cx
126.67
DH
129.33
Y
107.33
X
WR
127.00
HI
129.33
TC
117.33

QW
127.67
W
130.00
OT
117.67

QU
127.67
Q
130.00
FE
121.00

CA
127.67
p
130.33
QP
123.33

MX
128.00
EX
131.00
WD
123.67

UV
128.67
AU
131.00
VO
124.00

RX
129.00
SN
131.00
EL
126.00

BA
129.00
PX
131.33
SF
126.00

AH
129.00
KH
131.33
PW
• s No data submitted
0 3 Insufficient data

TAG SYMBOLS
x s Determined to be an outlier
it
u
= Above control limit
= Below control limit
-------
15/37	ESD-LV Performance Evaluation: Gamma in Water, 6-Nov-1998
Zinc-65
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
132.00

AY
137.33

GL
141.67

E
132.33

X
137.33

DR
142.33

XD
132.33

BL
137.33

DD
142.33

R
132.33

AW
137.33

CE
142.33

QM
132.67

I
137.67

TQ
143.33

SX
133.00

T
137.67

RZ
143.67

QZ
133.33

HL
138.00

MV
143.67

JE
133.67

MP
138.00

KL
143.67

BB
134.00

S
138.33

D
144.33

XK
134.00

JM
138.33

BC
144.67

XB
134.00

C
138.67

XT
144.67

VH
134.00

BO
138.67

UP
144.67

OM
134.33

U
138.67

QX
145.33

ss
134.33

QT
139.00

TD
145.67

VI
134.33

KX
139.00

JS
146.33

XA
134.67

PD
139.00

GQ
146.33

SI
134.67

HE
139.33

BN
146.33

NH
134.67

DE
139.67

PM
146.33

CP
134.67

AE
139.67

FJ
146.67

LF
135.00

SR
140.00

XI
147.33

VC
135.00

NP
140.00

SM
147.33

M
135.00

L
140.00

SD
148.00

RO
135.00

AZ
140.00

RK
149.00

JY
135.33

vs
140.33

UX
149.67

VE
135.33

AK
140.33

FL
150.33

TO
135.67

LR
140.33

DT
152.00

BK
136.00

NJ
140.67

CJ
152.33

CO
136.33

WW
140.67

AF
153.33

LE
136.33

DO
141.00

CS
153.33

BH
136.33

BM
141.00

AJ
155.00
ft
NO
136.67

sv
141.33

O
160.33
ft
JG
137.33

XF
141.33

MT
165.33
X
TW
137.33

N
141.33

HK
170.00
X
EB
137.33

K
141.33

A
274.33
3669.33
X
X
OA
XU
% responding labs
10-
Frequency distribution
+2	+4
Normalized deviation of the mean from the known value
• s No data submitted TAG SYMBOLS IT == Above control limit
-------
ESD-LV Performance Evaluation: Gamma in Water, 6-Nov-1998
16/37
Zinc-65
% responding labs	Frequency distribution
10-
iBfigiHHhfi—:T-.
0	+2
a I	I	T	i—H " I ® I	1	l	l ¦" T		 i 		1	r
-6	-4	~2	0	+2	+4	+6
Normalized deviation of the mean from the grand average
-------
ESD-LV Performance Evaluation: Gamma in Water, 6-Nov-1998
17/37
Cesium-134	Statistical Summary	166 Participants
The known value of this nuclide is 105.0 pCi/1 with an expected precision of 5.0; the control limits
are 96.3 to 113.7; the warning regions are 96.3 to 99.2 and 110.8 to 113.7
30(18.1 %) Failed to respond »»
5(3.0 %) Outliers
60(36.1 %) Out of control
but not an outlier
Statistic
. 43(25.9 %) Within all limits
Respondents
28(16.9 %) In warning zone
but within control
Non-outliers
Mean
105.32
Grand Avg 97.11
Std. Dev.
98.90
6.14
Variance
9781.94
37.67
% Coef. of Var.
93.91
6.32
% deviation of mean from known value
0.30
-7.52
Norm. dev. of mean from known value
0.00
-1.29
Median
96.67
96.67
% deviation of median from known value
-7.94
-7.94
Norm. dev. of median from known value
-0.08
-1.36
69(50.7 %) More than 3 norm. S.D. •
24(17.6 %) Between 2 and 3 norm. S.D
17(12.5 %) Within 1 norm. S.D.
of known value
26(19.1 %) Between 1 and 2 norm. S.D.'
vv_
-------
18/37
-
ESD-LV Performance Evaluation
: Gamma in Water,
6-Nov-1998


Cesium-134












Exper.
Rng anal

Normalized deviation

Lab
Res. 1
Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg) (known) Tag
A
106.0
108.0
107.0
1.00
0.236
107.00
3.43
0.69

AE
102.0
102.0
97.0
2.89
0.591
100.33
1.12
-1.62

AF
100.0
100.0
94.0
3.46
0.709
98.00
0.31
-2.42

AH
99.0
104.0
93.0
5.51
1.570
98.67
0.54
-2.19

:.aiv;.








' • ;
AJ
95.0
95.0
95.0
0.00
0.000
95.00
-0.73
-3.46
V
AK
94.0
94.0
94.0
0.00
0.000
94.00
-1.08
-3.81

AL
112.0
124.0
110.0
7.57
2.245
115.33
6.31
3.58
ft
^ • AP."'








'"7
.'
AU
95.0
97.0
99.0
2.00
0.473
97.00
-0.04
-2.77

AW
94.0
94.0
94.0
0.00
0.000
94.00
-1.08
-3.81

AY
91.0
94.0
93.0
1.53
0.354
92.67
-1.54
-4.27

AZ
101.0
108.0
103.0
3.61
0.827
104.00
2.39
-0.35

BA
98.0
97.0
96.0
1.00
0.236
97.00
-0.04
-2.77

BB
102.0
102.0
103.0
0.58
0.118
102.33
1.81
-0.92

BC
96.0
96.0
96.0
0.00
0.000
96.00
-0.38
-3.12
JL
BG









BH
104.0
97.0
93.0
5.57
1.570
98.00
0.31
-2.42

BK
105.0
106.0
104.0
1.00
0.236
105.00
2.73
0.00

BL
94.0
94.0
94.0
0.00
0.000
94.00
-1.08
-3.81
u
BM
101.0
103.0
101.0
1.15
0.236
101.67
1.58
-1.15

BN
95-0
100.0
91.0
4.51
1.120
95.33
-0.61
-3.35
u
BO
111.0
109.0
103.0
4.16
0.945
107.67
3.66
0.92

C
98.0
105.0
98.0
4.04
0.827
100.33
1.12
-1.62

CA
85.0
91.0
97.0
6.00
1.795
91.00
-2.12
-4.85
A
^pCv








•' -
CE
103.0
104.0
96.0
4.36
0.945
101.00
1.35
-1.39

CJ
103.0
101.0
105.0
2.00
0.473
103.00
2.04
-0.69

CO
93.0
96.0
98.0
2.52
0.591
95.67
-0.50
-3.23

CP
101.0
100.0
98.0
1.53
0.354
99.67
0.89
-1.85

cs
95.0
97.0
94.0
1.53
0.354
95.33
-0.61
-3.35
u
jCX:

jol
"'MX*.
£4:00


r^632
-lp5

D
103.0
99.0
102.0
2.08
0.473
101.33
1.46
-1.27

DD
105.0
107.0
104.0
1.53
0.354
105.33
2.85
0.12

DE
99.0
100.0
100.0
0.58
0.118
99.67
0.89
-1.85

DH
102.0
103.0
101.0
1.00
0.236
102.00
1.70
-1.04

DO
96.0
98.0
100.0
2.00
0.473
98.00
0.31
-2.42

DR
91.0
92.0
97.0
3.21
0.709
93.33
-1.31
-4.04
u
DT
88.0
94.0
93.0
3.21
0.709
91.67
-1.88
-4.62

E
98.0
101.0
98.0
1.73
0.354
99.00
0.66
-2.08

;EA*









EB
100.0
100.0
100.0
0.00
0.000
100.00
1.00
-1.73

EL
104.0
104.0
101.0
1.73
0.354
103.00
2.04
-0.69

EW








, ~
EX
89.0
99.0
90.0
5.51
1.345
92.67
	-1.54
-4.27

• s No data submitted TAG SYMBOLS 1T s Above control limit
0 s Insufficient data	x = Determined to be an outlier	 D- = Below control limit
-------
&	
ESD-LV Performance Evaluation
: Gamma in Water,
6-Nov-1998
	^
19/37
Cesium-134








Lab
Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
FE
97.0
110.0
94.0
8.50
2.695
100.33
1.12
-1.62

FJ
94.0
93.0
94.0
0.58
0.118
93.67
-1.19
-3.93
4
FL
98.0
96.0
96.0
1.15
0.236
96.67
-0.15
-2.89
'%£ $
GL
90.0
89.0
85.0
2.65
0.591
88.00
-3.15
-5.89
f '
GQ
108.0
108.0
108.0
0.00
0.000
108.00
3.77
1.04

HE
108.0
107.0
106.0
1.00
0.236
107.00
3.43
0.69

m
93.0
94.0
96.0
1.53
0.354
94.33
-0.96
-3.70

HK
100.0
98.0
101.0
1.53
0.354
99.67
0.89
-1.85

HL
102.0
98.0
101.0
2.08
0.473
100.33
1.12
-1.62

i|mP









T
95.0
95.0
95.0
0.00
0.000
95.00
-0.73
-3.46
T
IU
95.0
101.0
99.0
3.06
0.709
98.33
0.42
-2.31

JE
101.0
97.0
100.0
2.08
0.473
99.33
0.77
-1.96
M '
JG
108.0
113.0
111.0
2.52
0.591
110.67
4.70
1.96

JM
90.0
91.0
89.0
1.00
0.236
90.00
-2.46
-5.20
u
JS
99.0
100.0
98.0
1.00
0.236
99.00
0.66
-2.08

JY
92.0
92.0
91.0
0.58
0.118
91.67
-1.88
-4.62

K
101.0
103.0
102.0
1.00
0.236
102.00
1.70
-1.04

KH
84.0
83.0
84.0
0.58
0.118
83.67
-4.66
-7.39
u
KL
98.0
102.0
96.0
3.06
0.709
98.67
0.54
-2.19

KX
101.0
100.0
100.0
0.58
0.118
100.33
1.12
-1.62

L
97.0
97.0
99.0
1.15
0.236
97.67
0.19
-2.54

LE
106.0
104.0
116.0
6.43
1.795
108.67
4.00
1.27

LF
100.0
110.0
99.0
6.08
1.570
103.00
2.04
-0.69

LR
91.0
88.0
96.0
4.04
0.945
91.67
-1.88
-4.62
n
M
97.0
96.0
96.0
0.58
0.118
96.33
-0.27
-3.00

MP
97.0
93.0
96.0
2.08
0.473
95.33
-0.61
-3.35

MT
91.0
93.0
94.0
1.53
0.354
92.67
-1.54
-4.27
u
J*Y.
«jMX^
100.0
W&t&
101.0
97.0
2.08
0.473
w$m
99.33 ^
0.77
-1.96
-20i44|i
^ :

99.0
101.0
100.0
1.00
0.236
100.00
1.00
-1.73

NH
90.0
91.0
89.0
1.00
0.236
90.00
-2.46
-5.20

NJ
93.0
92.0
91.0
1.00
0.236
92.00
-1.77
-4.50
u








m <
NO
99.0
105.0
111.0
6.00
1.795
105.00
2.73
0.00

NP
90.0
88.0
100.0
6.43
1.795
92.67
-1.54
-4.27
u
0
Wt
99.0
183.0
&.jt .j' .'V
99.0
IB
100.0
mm
0.58
^6i35i
0.118
iii
99.33
^$331
0.77
yyT*'
)3^;29?
-1.96
p|6;

lOB








->V,< V> ^
OM
98.0
99.0
100.0
1.00
0.236
99.00
0.66
-2.08

OT
91.0
87.0
92.0
2.65
0.591
90.00
-2.46
-5.20
u
P
88.0
85.0
78.0
5.13
1.345
83.67
-4.66
-7.39










'•tp
s
• e No data submitted	TAG SYMBOLS	ft = Above control limit
0 = Insufficient data	x = Determined to be an outlier	JJ. = Below control limit
-------
6
20 / 37	ESD-LV Performance Evaluation: Gamma in Water, 6-Nov-1998
Cesium-134
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
-
Normalized deviation
(grand-avg) (known) Tag
PD
96.0
98.0 .
93.0
2.52
0.591
95.67
-0.50
-3.23

:FEi








• \xi
PM
90.0
94.0
91.0
2.08
0.473
91.67
-1.88
-4.62
ii
PW
93.0
96.0
93.0
1.73
0.354
94.00
-1.08
-3.81
u
PX
106.0
107.0
110.0
2.08
0.473
107.67
3.66
0.92

Q
87.0
91.0
93.0
3.06
0.709
90.33
-2.35
-5.08
u
'*QM


pXol

infill
^7410035

-10;?4
TP
QP
101.0
104.0
109.0
4.04
0.945
104.67
2.62
-0.12

QT
97.0
95.0
96.0
1.00
0.236
96.00
-0.38
-3.12
u
QU
95.0
97.0
99.0
2.00
0.473
97.00
-0.04
-2.77

QW
96.0
97.0
98.0
1.00
0.236
97.00
-0.04
-2.77

QX
97.0
97.0
95.0
1.15
0.236
96.33
-0.27
-3.00

QZ
90.0
93.0
91.0
1.53
0.354
91.33
-2.00
-4.73
u
R
98.0
100.0
98.0
1.15
0.236
98.67
0.54
-2.19

RK
96.0
85.0
91.0
5.51
1.570
90.67
-2.23
-4.97
u
RO 96.0
93.0
93.0
1.73
0.354
94.00
-1.08
-3.81
I








-
::RU:^









RX
102.0
101.0
103.0
1.00
0.236
102.00
1.70
-1.04

RZ
111.0
112.0
114.0
1.53
0.354
112.33
5.27
2.54

S
96.0
97.0
97.0
0.58
0.118
96.67
-0.15
-2.89

SD
91.0
88.0
87.0
2.08
0.473
88.67
-2.92
-5.66
u
SF
82.0
84.0
81.0
1.53
0.354
82.33
-5.12
-7.85

SI
104.0
110.0
98.0
6.00
1.795
104.00
2.39
-0.35

SM
90.0
88.0
89.0
1.00
0.236
89.00
-2.81
-5.54
#
SN
98.0
95.0
106.0
5.69
1.570
99.67
0.89
-1.85

SR
97.0
99.0
96.0
1.53
0.354
97.33
0.08
-2.66

ss
105.0
103.0
104.0
1.00
0.236
104.00
2.39
-0.35

sv
83.0
85.0
82.0
1.53
0.354
83.33
-4.77
-7.51
u
sx
100.0
100.0
102.0
1.15
0.236
100.67
1.23
-1.50

T
99.0
93.0
95.0
3.06
0.709
95.67
-0.50
-3.23
a
TC
78.0
79.0
75.0
2.08
0.473
77.33
-6.85
-9.58
u
TD
88.0
101.0
100.0
7.23
2.020
96.33
-0.27
-3.00

Itf








¦-
¦?< •

98.0
123.0
113.0
12.58
4.721
111.33
4.93
2.19

TQ
95.0
93.0
88.0
3.61
0.827
92.00
-1.77
-4.50

TR
88.0
89.0
90.0
1.00
0.236
89.00
-2.81
-5.54

TW
103.0
94.0
104.0
5.51
1.345
100.33
1.12
-1.62

U
103.0
102.0
103.0
0.58
0.118
102.67
1.93
-0.81

lUM









UP
97 jO
98.0
99.0
1.00
0.236
98.00
0.31
-2.42

:"'tjR








->•/ >
uv
85.0
87.0
93.0
4.16
0.945
88.33
-3.04
-5.77
i '
ux
98.0
88-°
90.0
5.29
1.345
92.00
-1.77
-4.50










» ^ ¦
• =
No data submitted

TAG SYMBOLS

= Above control limit

Insufficient data
X s
Determined to be an outlier
JJ- = Below control limit
-------
(t	











	
>
ESD-LV Performance Evaluation: Gamma in Water,
6-Nov-1998
21/37
*
Cesium-134











Lab




Exper.
Rng anal


Normalized deviation

Res. 1
Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
'W-AfiV










" /

vc
103.0
103.0
102.0
0.58
0.118
102.67

1.93
-0.81

VE
92.0
94.0
93.0
1.00
0.236
93.00

-1.42
-4.16
u
VH
97.0
99.0
101.0
2.00
0.473
99.00

0.66
-2.08

VI
93.0
91.0
91.0
1.15
0.236
91.67

-1.88
-4.62
11
-4ym:
••N.'V - - A f ->.S










~?V>5£
vo
93.0
94.0
92.0
1.00
0.236
93.00

-1.42
-4.16
jf"
vs
93.0
94.0
92.0
1.00
0.236
93.00

-1.42
-4.16
u
w
96.0
98.0
94.0
2.00
0.473
96.00

-0.38
-3.12
11
WD
98.0
96.0
94.0
2.00
0.473
96.00

-0.38
-3.12
11
'"wfcf
; . »»;J$ ¥ £

























IS®












WO












WR
94.0
97.0
98.0
2.08
0.473
96.33

-0.27
-3.00

 'xr-wwr?
1242.00 396;60
393;87v

Y
96.0
93.0
93.0
1.73
0.354
94.00

-1.08
-3.81
iT



Data sorted by Laboratory Average




Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
46.00

X
MX

89.00
U
TR

91.67

11
PM
50.00

X
cx

89.00
u
SM

91.67

u
LR
74.00

X
QM

90.00
u
OT

91.67

11
JY
77.33

U
TC

90.00
u
NH

91.67

u
DT
82.33

U
SF

90.00
u
JM

92.00

11
UX
83.33

11
sv

90.33
u
Q

92.00

u
TQ
83.67

U
p

90.67
u
RK

92.00

11
NJ
83.67

U
KH

91.00
11
XI
92.67

u
NP
88.00

H
GL

91.00
u
CA

92.67

u
MT
88.33

U
UV

91.33
11
QZ
92.67

11
EX
88.67

U
SD

91.67
u
VI
92.67

11
AY
• = No data submitted


TAG SYMBOLS


ft = Above control limit
0 - Insufficient data
VN-

x ;
= Determined to be an outlier

11 = Below control limit
	jj
-------
f	^
22/37	ESD-LV Performance Evaluation: Gamma in Water, 6-Nov-1998
; Cesium-134
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
93.00
u
VS
96.67

S
100.33

C
93.00
u
vo
96.67

FL
100.33

AE
93.00
u
VE
97.00

QW
100.67

sx
93.33
u
XT
97.00

QU
101.00

XB
93.33
u
DR
97.00

BA
101.00

CE
93.67
u
FJ
97.00

AU
101.33

D
94.00
u
Y
97.33

SR
101.67

BM
94.00
u
XF
97.67

L
102.00

RX
94.00

RO
98.00

UP
102.00

K
94.00

PW
98.00

DO
102.00

DH
94.00

BL
98.00

BH
102.33

BB
94.00

AW
98.00

AF
102.67

VC
94.00
11
AK
98.33

IU
102.67

U
94.33
u
m
98.67

R
103.00

LF
94.67

X
98.67

KL
103.00

EL
95.00

WW
98.67

AH
103.00

CJ
95.00
11
I
99.00

XD
104.00

SS
95.00
11
AJ
99.00

VH
104.00

SI
95.33
11
MP
99.00

OM
104.00

AZ
95.33
11
CS
99.00

JS
104.67

Qp
95.33
11
BN
99.00

E
105.00

NO
95.67
11
XA
99.33

O
105.00

BK
95.67
11
T
99.33

MV
105.33

DD
95.67
11
PD
99.33

JE
107.00

HE
95.67
11
CO
99.67

SN
107.00

A
96.00
11
WD
99.67

HK
107.67

PX
96.00
11
W
99.67

DE
107.67

BO
96.00
11
QT
99.67

CP
108.00

GQ
96.00
11
BC
100.00

N
108.67

LE
96.33

WR
100.00

EB
110.67

JG
96.33

TD
100.33

TW
111.33

TO
96.33

QX
100.33

KX
112.33

RZ
96.33

M
100.33

HL
115.33
n
AL
96.67

XK
100.33

FE
190.33
1242.00
X
X
OA
XU
% responding labs	Frequency distribution
6	-4	-2	0

-6	-4	-2	0	+2	+4	+6
Normalized deviation of the mean from the known value
• = No data submitted	TAG SYMBOLS	ft = Above control limit
0 = Insufficient data	x s Determined to be an outlier	U s Below control limit
-------
ESD-LV Performance Evaluation: Gamma in Water, 6-Nov-1998	23 / 37
Cesium-134
% responding labs	Frequency distribution
— i —M < —	b-b ^ wm-j — j— [ tn
-4	-2	0	+2	+4	+6
Normalized deviation of the mean from the grand average
-------
ESD-LV Performance Evaluation: Gamma in Water, 6-Nov-1998
24/37
Cesium-137	Statistical Summary	166 Participants
The known value of this nuclide is 111.0 pCi/1 with an expected precision of 6.0; the control limits
are 100.6 to 121.4; the warning regions are 100.6 to 104.1 and 117.9 to 121.4
29(17.5 %) Failed to respond
7(4.2 %) Outliers •
11 (6.6 %) Out of control'
but not an outlier
Statistic
. 98(59.0 %) Within all limits
Respondents
21(12.7 %) In warning zone
but within control
Non-outliers
Mean
129.91
Grand Avg 113.38
Std. Dev.
190.93
5.42
Variance
36455.89
29.43
% Coef. of Var.
146.97
4.78
% deviation of mean from known value
17.04
2.15
Norm. dev. of mean from known value
0.10
0.44
Median
113.33
113.33
% deviation of median from known value
2.10
2.10
Norm. dev. of median from known value
0.01
0.43
18(13.1 %) More than 3 norm. S.D. »
21(15.3 %) Between 2 and 3 norm. S.D. *
,65(47.4 %) Within 1 norm. S.D.
f
•	of known value
33(24.1 %) Between 1 and 2 norm. S.D.
-------
25 / 37	ESD-LV Performance Evaluation: Gamma in Water, 6-Nov-1998
Ceeium-137
Lab Rea. 1
Res. 2
Res. 3
Exper,
Sigma
Rag anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tog
A
115.0
116.0
117.0
1.00
0.197
116.00
0.76
1.44

AE
114.0
115.0
115.0
0.58
0.098
114.67
0.37
1.06

AF
122.0
114.0
118.0
4.00
0.788
118.00
1.33
2.02

AH
107.0
120.0
117.0
6.81
1.533
114.67
0,37
106











AJ
120.0
125.0
121.0
2.65
0.492
122.00
2.49
3.18
ft
AK
110.0
111.0
111.0
0.58
0.098
110.67
-0.78
-0.10

-AL-
• s.- ' t>
HE

HI

0.492;
K93B?!
•589
-5;oo' ¦
•x \
AP









AU
112.0
113.0
111.0
l.CO
0.191
112.00
-0.40
0.29

AW
112.0
112.0
106.0
3.46
0.591
110.00
-0.98
-0.29

AY
96.0
96.0
103.0
4.04
0.689
98.33
-4.34
¦3.66

AZ
111.0
108.0
106.0
2.52
0.492
108.33
-1.46
-0.77

BA
110.0
103.0
110.0
4.04
0.689
107.67
-1.65
-0.96

BB
114.0
114.0
107.0
4.04
0.689
111.67
-0.50
0.19

BC
112.0
113.0
113.0
0.58
0.098
112.67
-0.21
0.48

BG









BH
119.0
120.0
120.0
0.58
0.098
119.67
1.81
2.50

BK
123.0
125.0
125.0
1.15
0.197
124.33
3.16
3.85
ft
BL
109.0
104.0
110.0
3.21
0.591
107.67
-1.65
-0.96

BM
112.0
111.0
113.0
1.00
0.197
112.00
-0.40
0.29

BN
122.0
116.0
121.0
3.21
0.591
119.67
1.81
2.50

BO
113.0
112.0
112.0
0.58
0.098
112.33
-0.30
0.38

C
100.0
110.0
100,0
5.77
0.984
103.33
-2.90
-2.21

CA
103.0
113.0
113.0
5.77
0.984
109.67
-1.07
-0.38

cc









CE
123.0
120.0
118.0
2.52
0.492
120.33
2.01
2.69

CJ
114.0
115.0
117.0
1.53
0.295
115.33
0.56
1.25

CO
117.0
113.0
118.0
2.65
0.492
116.00
0.76
1.44

CP
111.0
116.0
114.0
2.52
0.492
113.67
0.08
0.77

cs
112.0
112.0
114.0
1.15
0.197
112.67
-0.21
0.48


€$§E
3W:
MMi
MM
Mill
IP®:



D
112.0
111.0
106.0
3.21
0.591
109.67
-1.07
-0.38

BD
123.0
119.0
121.0
2.00
0.394
121.00
2.20
2,89

DE
113.0
114.0
114.0
0.58
0.098
113.67
0.08
0.77

DH
113.0
111.0
112.0
1.00
0.197
112.00
-0.40
0.29

DO
118.0
117.0
113.0
2.65
0.492
116.00
0.76
1.44

DR
112.0
114.0
113.0
1.00
0.197
113.00
-0.11
0.58

DT
116.0
114.0
119.0
2.52
0.492
116.33
0.85
1.54

E
114.0
117.0
119.0
2,52
0.492
116.67
0.95
1.64

EA,









EB
14.0i0 ,
"140.0
140.0";
:-q.oo-.
fo:ooo?
140.00;
•7.68 :
8.37
¦K"
EL
113.0
111.0
109.0
2.00
0.394
111.00
-0.69
0.00

ew:









EX
103.0
98.0
102.0
2.65
0.492
101.00
-3.57
-2.89

• =
C* ~
No data submitted
x s
TAG SYMBOLS
Determined to be an outlier
11 s Above control limit
{!¦ s Below control limit
-------
ESD-LV Performance Evaluation: Gamma in Water, 6-Nov-1998	26 / 37
	
Cesium-137
Exper. Rng anal	Normalized deviation
Lab
Res. 1
Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg) (known)
FE
110.0
120.0
130.0
10.00
2.846
120.00
1.91
2.60
FJ
110.0
110.0
110.0
0.00
0.000
110.00
-0.98
-0.29
FL
116.0
118.0
117.0
1.00
0.197
117.00
1.04
1.73
WI







GL
110.0
109.0
109.0
0.58
0.098
109.33
-1.17
-0.48
GQ
108.0
108.0
108.0
0.00
0.000
108.00
-1.55
-0.87
HE
111.0
111.0
113.0
1.15
0.197
111.67
-0.50
0.19
m
109.0
109.0
110.0
0.58
0.098
109.33
-1.17
-0.48
HK
121.0
115.0
118.0
3.00
0.591
118.00
1.33
2.02
HL
119.0
119.0
112.0
4.04
0.689
116.67
0.95
1.64
-mzi.
•V* , J ¦'WC-.VW








I
114.0
114.0
113.0
0.58
0.098
113.67
0.08
0.77

IU
JE
111.0
117.0
114.0
3.00
0.591
114.00
0.18
0.87

117.0
114.0
115.0
1.53
0.295
115.33
0.56
1.25
: 'i#,,
JG
117.0
136.0
119.0
10.44
2.658
124.00
3.07
3.75
ir
JM
107.0
108.0
111.0
2.08
0.394
108.67
-1.36
-0.67

JS
116.0
115.0
112.0
2.08
0.394
114.33
0.27
0.96

JY
114.0
117.0
116.0
1.53
0.295
115.67
0.66
1.35

K
116.0
120.0
121.0
2.65
0.492
119.00
1.62
2.31

KH
114.0
111.0
114.0
1.73
0.295
113.00
-0.11
0.58

KL
115.0
116.0
118.0
1.53
0.295
116.33
0.85
1.54

KX
115.0
117.0
115.0
1.15
0.197
115.67
0.66
1.35

L
SLE-
112.0
i&iol
111.0
I2&01
111.0
0.58
%L68f
0.098
111.33
yf,y
Ktf6;33:
-0.59
0.10
7.31;
•x'Sp
LF
120.0
110.0
120.0
5.77
0.984
116~67
0.95
1.64

LR
109.0
108.0
119.0
6.08
1.158
112.00
-0.40
0.29

M
119.0
118.0
119.0
0.58
0.098
118.67
1.53
2.21

MP
117.0
106.0
118.0
6.66
1.345
113.67
0.08
0.77

MT
110.0
111.0
111.0
0.58
0.098
110.67
-0.78
-0.10

MV
Mi
126.0
fefe^AQi
122.0
116.0
^6|k0j
5.03
:M3'
0.984
mm
121.33
giii
2.30
' ITJT
mm
2.98
4%P7I

N
110.0
114.0
115.0
2.65
0.492
113.00
-0.11
0.58

NH
110.0
109.0
110.0
0.58
0.098
109.67
-1.07
-0.38

NJ
§fe
114.0
111.0
117.0
3.00
0.591
114.00
0.18
0.87

NO
119.0
123.0
127.0
4.00
0.788
123.00
2.78
3.46

NP
108.0
108.0
117.0
5.20
0.886
111.00
-0.69
0.00

O
i:m
119.0
S231.QI
119.0
m2&m
118.0
•vy- W / y
$39l0£
0.58
imp;
0.098
118.67
it*"
1.53
2.21
3^83::

OB
116.0
114.0
113.0
1.53
0.295
114.33
0.27
0.96

OM
120.0
120.0
122.0
1.15
0.197
120.67
2.10
2.79

OT
117.0
99.0
114.0
9.64
2.470
110.00
-0.98
-0.29

P
99.0
93.0
95.0
3.06
0.591
95.67
-5.11
-4.43
u
W&i








7
• = No data submitted	TAG SYMBOLS	IT = Above control limit
. 0 s Insufficient data	x = Determined to be an outlier	11 = Below control limit
-------
27/37
<-
ESD-LV Performance Evaluation
: Gamma in Water,
6-Nov-1998


f
Cesium-137








Lab
Res. 1


Exper.
Rng anal

Normalized deviation

Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
PD
118.0
120.0
116.0
2.00
0.394
118.00
1.33
2.02

,'.PE








V
PM
111.0
110.0
117.0
3.79
0.689
112.67
-0.21
0.48

PW
111.0
110.0
111.0
0.58
0.098
110.67
-0.78
-0.10

PX
106.0
108.0
107.0
1.00
0.197
107.00
-1.84
-1.15

Q
106.0
105.0
107.0
1.00
0.197
106.00
-2.13
-1.44

QM
97.0
105.0
101.0
4.00
0.788
101.00
-3.57
-2.89

QP
113.0
112.0
116.0
2.08
0.394
113.67
0.08
0.77

QT
107.0
109.0
114.0
3.61
0.689
110.00
-0.98
-0.29

QU
110.0
110.0
112.0
1.15
0.197
110.67
-0.78
-0.10

QW
113.0
108.0
109.0
2.65
0.492
110.00
-0.98
-0.29

QX
115.0
116.0
115.0
0.58
0.098
115.33
0.56
1.25

QZ
111.0
114.0
114.0
1.73
0.295
113.00
-0.11
0.58

R
120.0
119.0
119.0
0.58
0.098
119.33
1.72
2.41

RK
116.0
102.0
110.0
7.02
1.720
109.33
-1.17
-0.48

RO
119.0
119.0
114.0
2.89
0.492
117.33
1.14
1.83

JRR









RU








Imi, \
RX
112.0
113.0
113.0
0.58
0.098
112.67
-0.21
0.48

RZ
127.0
121.0
123.0
3.06
0.591
123.67
2.97
3.66
ft
S
111.0
110.0
112.0
1.00
0.197
111.00
-0.69
0.00

SD
106.0
109.0
111.0
2.52
0.492
108.67
-1.36
-0.67

SF
101.0
101.0
104.0
1.73
0.295
102.00
-3.29
-2.60

SI
122.0
127.0
116.0
5.51
1.158
121.67
2.39
3.08
ft
SM
112.0
114.0
118.0
3.06
0.591
114.67
0.37
1.06

SN
113.0
117.0
117.0
2.31
0.394
115.67
0.66
1.35

SR
106.0
110.0
107.0
2.08
0.394
107.67
-1.65
-0.96

ss
118.0
123.0
120.0
2.52
0.492
120.33
2.01
2.69

sv
108.0
105.0
100.0
4.04
0.788
104.33
-2.61
-1.92

sx
119.0
136.0
112.0
12.34
3.596
122.33
2.58
3.27
ft
T
106.0
106.0
104.0
1.15
0.197
105.33
-2.32
-1.64

TC
109.0
110.0
108.0
1.00
0.197
109.00
-1.26
-0.58

TD
110.0
110.0
116.0
3.46
0.591
112.00
-0.40
0.29

\TF:/








**
TO
119.0
128.0
127.0
4.93
0.886
124.67
3.26
3.95
fr '
TQ
115.0
114.0
117.0
1.53
0.295
115.33
0.56
1.25

TR
111.0
109.0
101.0
5.29
0.984
107.00
-1.84
-1.15

TW
114.0
113.0
117.0
2.08
0.394
114.67
0.37
1.06

U
115.0
115.0
116.0
0.58
0.098
115.33
0.56
1.25

;UM'f









UP
1120
114.0
115.0
1.53
0.295
113.67
0.08
0.77

ur"








/• - *
uv
105.0
103.0
105.0
1.15
0.197
104.33
-2.61
-1.92

ux
112.0
113.0
101.0
6.66
1.345
108.67
-1.36
-0.67











• = No data submitted	TAG SYMBOLS	ft = Above control limit
0 = T-ciT-^cient data	x = Determined to be an outlier	J1 = Below control limit
		-y
-------
ESD-LV Performance Evaluation: Gamma in Water, 6-Nov-1998	28/37
s							
Cesium-137







	>
Lab



Exper.
Rng anal

Normalized deviation

Res. 1
Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag









v'-iS i I
•"¦i'sa-'"
vc
118.0
117.0
118.0
0.58
0.098
117.67
1.24
1.92

VE
110.0
111.0
108.0
1.53
0.295
109.67
-1.07
-0.38

VH
121.0
119.0
122.0
1.53
0.295
120.67
2.10
2.79

VI
118.0
116.0
115.0
1.53
0.295
116.33
0.85
1.54










vo
107.0
116.0
118.0
5.86
1.158
113.67
0.08
0.77

vs
108.0
109.0
109.0
0.58
0.098
108.67
-1.36
-0.67

w
112.0
116.0
112.0
2.31
0.394.
113.33
-0.01
0.67

WD
117.0
115.0
116.0
1.00
0.197
116.00
0.76
1.44

yWI?









j/v V 5



















fW(X









WR
110.0
110.0
117.0
4.04
0.689
112.33
-0.30
0.38

firej









WW
118.0
115.0
114.0
2.08
0.394
115.67
0.66
1.35










\
X
123.0
118.0
120.0
2.52
0.492
120.33
2.01
2.69

XA
111.0
111.0
113.0
1.15
0.197
111.67
-0.50
0.19

XB
110.0
109.0
112.0
1.53
0.295
110.33
-0.88
-0.19

MP;;









XD
118.0
114.0
119.0
2.65
0.492
117.00
1.04
1.73

XF
110.0
114.0
108.0
3.06
0.591
110.67
-0.78
-0.10

JSG'f







s\V;.
-y. '-
XI
110.0
110.0
110.0
0.00
0.000
110.00
-0.98
-0.29

XK
129.0
124.0
125.0
2.65
0.492
126.00
3.64
4.33
tr
^XQ;









XT
113.0
116.0
111.0
2.52
0.492
113.33
-0.01
0.67


-Tt'. - v
;2238:0:I
V">"«**
f236g0%

M&il
35.285};


PSil
'tKrk
Y
113.0
108.0
109.0
2.65 •
0 492
110.00
-0.98
-0.29

Data sorted by Laboratory Average
Average
Tag
Lab
Average Tag
Lab
Average
Tag
Lab
55.33
X
MX
105.33
T
108.67

SD
59.00
X
CX
106.00
Q
108.67

JM
93.67
X
AL
107.00
TR
109.00

TC
95.67
u
P
107.00
PX
109.33

RK
98.33

AY
107.67
SR
109.33

HI
101.00

QM
107.67
BL
109.33

GL
101.00

EX
107.67
BA
109.67

VE
102.00

SF
108.00
GQ
109.67

NH
103.33

C
108.33
AZ
109.67

D
104.33

uv
108.67
VS
109.67

CA
104.33

sv
108.67
ux
110.00

Y
• s No data submitted

TAG SYMBOLS

ft
= Above control limit
0 s Insufficient data

x = Determined to be an outlier
4
= Below control limit
-------
29/37
ESD-LV Performance Evaluation: Gamma in Water, 6-Nov-1998
Cesium-137
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
110.00

XI
113.33

XT
116.67

E
110.00

QW
113,33

W
117.00

XD
110.00

QT
113.67

VO
117.00

FL
110.00

OT
113.67

UP
117.33

RO
110.00

FJ
113.67

QP
117.67

VC
110.00

AW
113.67

MP
118.00

PD
110.33

XB
113.67

I
118.00

HK
110.67

XF
113.67

DE
118.00

AF
110.67

QU
113.67

CP
118.67

O
110.67

PW
114.00

NJ
118.67

M
110.67

MT
114.00

IU
119.00

K
110.67

AK
114.33

OB
119.33

R
111.00

S
114.33

JS
119.67

BN
111.00

NP
114.67

TW
119.67

BH
111.00

EL
114.67

SM
120.00

FE
111.33

L
114.67

AH
120.33

X
111.67

XA
114.67

AE
120.33

ss
111.67

BE
115.33

U
120.33

CE
111.67

BB
115.33

TQ
120.67

VH
112.00

TD
115.33

QX
120.67

OM
112.00

LR
115.33

JE
121.00

DD
112.00

DH
115.33

CJ
121.33

MV
112.00

BM
115.67

WW
121.67
1t
SI
112.00

AU
115.67

SN
122.00
it
AJ
112.33

WR
115.67

KX
122.33
it
sx
112.33

BO
115.67

JY
123.00
ft
NO
112.67

RX
116.00

WD
123.67
ir
RZ
112.67

PM
116.00

DO
124.00
n
JG
112.67

CS
116.00

CO
124.33
it
BK
112.67

BC
116.00

A
124.67
ir
TO
113.00

QZ
116.33

VI
126.00
ir
XK
113.00

N
116.33

KL
136.33
X
LE
113.00

KH
116.33

DT
140.00
X
EB
113.00

DR
116.67

LF
231.67
X
OA



116.67

HL
2342.67
X
xu
responding labs
Frequency distribution
£L
y m
-y —m^h!


-6
-4	-2	fl	+2
Normalized deviation of the mean from the known value
+4
+6
• = No data submitted TAG SYMBOLS ft = Above control limit
<55 = Insufficient data	x = Determined to be an outlier	# = Below control limit
-------
ESD-LV Performance Evaluation: Gamma in Water, 6-Nov-1998	30/37
Cesium-137
% responding labs	Frequency distribution
lo-r	
o w, -	- , ¦ -j	<	.^iw -
-6	-4	-2	0	+2
+4	+6
Normalized deviation of the mean from the grand average
-------
ESD-LV Performance Evaluation: Gamma in Water, 6-Nov-1998
31/37
Barium-133	Statistical Summary	166 Participants
The known value of this nuclide is 56.0 pCi/1 with an expected precision of 6.0; the control limits
are 46.6 to 66.4; the warning regions are 45.6 to 49.1 and 62.9 to 66.4
30(18.1 %) Failed to respond
6(3.6 %) Outliers '
4(2.4 %) Out of control
but not an outlier
Statistic
. 109(65.7 %) Within all limits
Respondents
17(10.2 %) In warning zone
but within control
Non-outliers
Mean
72.65
Grand Avg 53.11
Std. Dev.
228.21
3.64
Variance
52079.28
13.23
% Coef. of Var.
314.55
6.85
% deviation of mean from known value
29.56
-5.16
Norm dev. of mean from known value
0.07
-0.80
Median
53.67
53.67
% deviation of median from known value
-4.17
-4.17
Norm. dev. of median from known value
-0.01
-0.64
10(7.4 %) More than 3 norm. S.D.
17(12.5 %) Between 2 and 3 norm. S.D
.77(56.6 %) Within 1 norm. S.D.
of known value
32(23.
o) Between 1 and 2 norm. S.D.
-------
.
32/37	ESD-LV Performance Evaluation: Gamma in Water, 6-Nov-1998
v—:—			—-					
r
Barium-133
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known)
A
56.0
55.0
53.0
1.53
0.295
54.67
0.45
-0.38
AE
54.0
57.0
55.0
1.53
0.295
55.33'
0.64
-0.19
AF
53.0
56.0
50.0
3.00
0.591
53.00
-0.03
-0.87
AH
52.0
53.0
60.0
4.36
0.788
55.00
0.55
-0.29
I®
S> ~ /&¦/	








AJ
49.0
42.0
44.0
3.61
0.689
45.00
-2.34
-3.18
AK
51.0
51.0
51.0
0.00
0.000
51.00
-0.61
-1.44
AL
44.0
44.0
51.0
4.04
0.689
46.33
-1.96
-2.79
~yw








AU
53.0
52.0
50.0
1.53
0.295
51.67
-0.42
-1.25
AW
54.0
52.0
53.0
1.00
0.197
53.00
-0.03
-0.87
AY
54.0
54.0
55.0
0.58
0.098
54.33
0.35
-0.48
AZ
59.0
56.0
57.0
1.53
0.295
57.33
1.22
0.38
BA
51.0
49.0
46.0
2.52
0.492
48.67
-1.28
-2.12
BB
49.0
55.0
47.0
4.16
0.788
50.33
-0.80
-1.64
BC
4 8.0
48.0
48.0
0.00
0.000
48.00
-1.47
-2.31
BG,








BH
40.0
50.0
48.0
5.29
0.984
46.00
-2.05
-2.89
BK
52.0
50.0
50.0
1.15
0.197
50.67
-0.70
-1.54
BL
55.0
55.0
55.0
0.00
0.000
55.00
0.55
-0.29
BM
55.0
57.0
57.0
1.15
0.197
56.33
0.93
0.10
BN
58.0
57.0
55.0
1.53
0.295
56.67
1.03
0.19
BO
53.0
57.0
48.0
4.51
0.886
52.67
-0.13
-0.96
C
54.0
53.0
53.0
0.58
0.098
53.33
0.07
-0.77
CA
55.0
55.0
54.0
0.58
0.098
54.67
0.45
-0.38
;CCT "








CE
59.0
56.0
57.0
1.53
0.295
57.33
1.22
0.38
CJ
46.0
44.0
49.0
2.52
0.492
46.33
-1.96
-2.79
CO
54.0
57.0
54.0
1.73
0.295
55.00
0.55
-0.29
CP
56.0
58.0
57.0
1.00
0.197
57.00
1.12
0.29
cs
57.0
53.0
56.0
2.08
0.394
55.33
0.64
0.19
¦&M

|25#i|
MM
,'V'
1;63
:0.295;j

^ "-v -v- f-nt. j
i"8.02&
'8185:;
D
56.0
54.0
52.0
2.00
0.394
54.00
0.26
0.58
DD
60.0
60.0
57.0
1.73
0.295
59.00
1.70
0.87
DE
55.0
56.0
56.0
0.58
0.098
55.67
0.74
-0.10
DH
55.0
57.0
55.0
1.15
0.197
55.67
0.74
-0.10
DO
59.0
54.0
61.0
3.61
0.689
58.00
1.41
0.58
DR
53.0
57.0
52.0
2.65
0.492
54.00
0.26
-0.58
DT
55.0
59.0
56.0
2.08
0.394
56.67
1.03
0.19
E
54.0
56.0
55.0
1.00
0.197
55.00
0.55
-0.29
;ea .








EB
58.0
58.0
58.0
0.00
0.000
58.00
1.41
0.58
EL
53.0
56.0
52.0
2.08
0.394
53.67
0.16
-0.67
-EW'<








EX
55.0
57.0
56.0
1.00
0.197
56.00
0.83
0.00
• s No data submitted TAG SYMBOLS IT = Above control limit
i9) = T~c,r«Vent data	x s Determined to be an outlier	II - Below control limit
-------
ESD-LV Performance Evaluation: Gamma in Water, 6-Nov-1998
33/37
Barium-133
Lab
Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
FE
63.0
64.0
65.0
4.93
0.886
60.67
2.18
1.35
FJ
61.0
54.0
52.0
1.53
0.295
52.33
-0.22
-1.06
FL
56.0
58.0
53.0
2.52
0.492
55.67
0.74
-0.10
GL
49.0
46.0
54.0
4.04
0.788
49.67
-0.99
-1.83
GQ
56.0
56.0
56.0
0.00
0.000
56.00
0.83
0.00
HE
56.0
57.0
59.0
1.53
0.295
57.33
1.22
0.38
HI
52.0
54.0
52.0
1.15
0.197
52.67
-0.13
-0.96
HK
52.0
51.0
52.0
0.58
0.098
51.67
-0.42
-1.25
HL
56.0
58.0
57.0
1.00
0.197
57.00
1.12
0.29
i
53.0
50.0
56.0
3.00
0.591
53.00
-0.03
-0.87
IU
JE
58.0
55.0
52.0
3.00
0.591
55.00
0.55
-0.29
55.0
55.0
55.0
0.00
0.000
55.00
0.55
-0.29
JG
56.0
56.0
58.0
1.15
0.197
56.67
1.03
0.19
JM
51.0
52.0
49.0
1.53
0.295
50.67
-0.70
-1.54
JS
51.0
51.0
50.0
0.58
0.098
50.67
-0.70
-1.54
JY
57.0
56.0
55.0
1.00
0.197
56.00
0.83
0.00
K
61.0
59.0
57.0
2.00
0.394
59.00
1.70
0.87
KH
46.0
46.0
48.0
1.15
0.197
46.67
-1.86
-2.69
KL
51.0
50.0
55.0
2.65
0.492
52.00
-0.32
-1.15
KX
54.0
54.0
54.0
0.00
0.000
54.00
0.26
-0.58
L
56.0
55.0
54.0
1.00
0.197
55.00
0.55
-0.29
LE
61.0
60.0
60.0
0.58
0.098
60.33
2.09
1.25
LF
60.0
61.0
58.0
1.53
0.295
59.67
1.89
1.06
LR
49.0
41.0
48.0
4.36
0.788
46.00
-2.05
-2.89
M
52.0
53.0
50.0
1.53
0.295
51.67
-0.42
-1.25
MP
50.0
44.0
43.0
3.79
0.689
45.67
-2.15
-2.98
MT
45.0
45.0
45.0
0.00
0.000
45.00
-2.34
-3.18
MV
65^0
58.0
56.0
1.53
0.295
56.33
0.93
0.10
Vmx
N
56.0
iSS
54.6
mm
54.0
iiS
1.15
aQv*92i
0.197
54.67
0.45
156
0.38
NH
54.0
55.0
54.0
0.58
0.098
54.33
0.35
-0.48
NJ
51.0
54.0
53.0
1.53
0.295
52.67
-0.13
-0.96
NO
56.0
58.0
60.0
2.00
0.394
58.00
1.41
0.58
NP
48.0
48.0
53.0
2.89
0.492
49.67
-0.99
-1.83
0
,iy ¦%
\OA
% v*'
:i0B
54.0
Wp
54.0
Kofi
54.0
yitjiiF
?109;0>
0.00
sn*
0.000
3£788J
54.00
107;Q0
0.26
16£6i.
-0.58
S--. ?<'
=14.72
v , Vs"-.
OM
58.0
54.0
64.0
2.31
0.394
65.33
0.64
-0.19
OT
51.0
48.0
39.0
6.24
1.345
46.00
-2.05
-2.89
P
Ipb:
54.0
53.0
53.0
0.58
0.098
63.33
0.07
-0.77

s—

• s No data submitted
0 s Insufficient data
TAG SYMBOLS
x = Determined to be an outlier
ft s= Above control limit
II s Below control limit
-------
34/37
>¦
ESD-LV Performance Evaluation: Gamma in Water,
6-Nov-1998


Bariiun-133








Lab
Res. 1


Exper.
Rng anal

Normalized deviation

Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
PD
66.0
58.0
57.0
1.00
0.197
57.00
1.12
0.29

NpgT








• V ;
PM
51.0
51.0
53.0
1.15
0.197
51.67
-0.42
-1.25

PW
50.0
50.0
51.0
0.58
0.098
50.33
-0.80
-1.64

PX
55.0
58.0
58.0
1.73
0.295
57.00
1.12
0.29

Q
52.0
53.0
52.0
0.58
0.098
52.33
-0.22
-1.06

QM
52.0
58.0
57.0
3.21
0.591
55.67
0.74
-0.10

QP
49.0
50.0
46.0
2.08
0.394
48.33
-1.38
-2.21

QT
44.0
43.0
47.0
2.08
0.394
44.67
-2.44
-3.27

QU
50.0
50.0
48.0
1.15
0.197
49.33
-1.09
-1.92

QW
49.0
50.0
46.0
2.08
0.394
48.33
-1.38
-2.21

QX
52.0
52.0
53.0
0.58
0.098
52.33
-0.22
-1.06

QZ
49.0
53.0
57.0
4.00
0.788
53.00
-0.03
-0.87

R
52.0
53.0
52.0
0.58
0.098
52.33
-0.22
-1.06

RK
47.0
42.0
45.0
2.52
0.492
44.67
-2.44
-3.27
u
RO
50.0
52.0
49.0
1.63
0.295
50.33
-0.80
-1.64

RR.








' •
RU








ry.
":rx;:
£664:
461,0.:,

MM
0.098:
•66>;67:

;^;p8
;'X
RZ
53.0
55.0
57.0
2.00
0.394
55.00
0.55"
-0.29

S
56.0
55.0
58.0
1.53
0.295
56.33
0.93
0.10

SD
56.0
62.0
52.0
2.31
0.394
53.33
0.07
-0.77

SF
46.0
48.0
48.0
1.15
0.197
47.33
-1.67
-2.50

SI
52.0
56.0
53.0
2.08
0.394
53.67
0.16
-0.67

SM
57.0
51.0
58.0
3.79
0.689
55.33
0.64
-0.19

SN
55.0
51.0
45.0
5.03
0.984
50.33
-0.80
-1.64

SR
51.0
52.0
56.0
2.65
0.492
53.00
-0.03
-0.87

ss
56.0
48.0
49.0
4.36
0.788
51.00
-0.61
-1.44

sv
52.0
52.0
53.0
0.58
0.098
52.33
-0.22
-1.06

sx
59.0
55.0
56.0
2.08
0.394
56.67
1.03
0.19

T
52.0
54.0
65.0
1.53
0.295
53.67
0.16
-0.67




225^
#68;

"MM:
-8,21
WML

TD
47.0
48.0
48.0
0.58
6"098
47.67
-1.57
-2 41










- '•
TO
54.0
61.0
63.0
4.73
0.886
59.33
1.80
0.96

TQ
53.0
51.0
51.0
1.15
0.197
51.67
-0.42
-1.25

TR
54.0
50.0
60.0
2.31
0.394
51.33
-0.51
-1.35

TW
52.0
55.0
52.0
1.73
0.295
53.00
-0.03
-0.87

U
55.0
55.0
63.0
1.15
0.197
54.33
0.35
-0.48

:um









UP
55.0
66.0
55.0
0.68
0.098
55.33
0.64
-0.19

,UR








, •
UV
50.0
48.0
49.0
1.00
0.197
49.00
-1.19
-2.02

UX
58.0
55.0
52.0
3.00
0.591
55.00
0.55
-0.29











• = No data submitted	TAG SYMBOLS	ft = Above control limit
0 = Insufficient data	x = Determined to be an outlier	11 s Below control limit
-------
ESD-LV Performance Evaluation: Gamma in Water, 6-Nov-1998	35/37
V		
Barium-133







Lab



Exper.
Rng anal

Normalized deviation
Res. 1
Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag









vc
56.0
54.0
56.0
1.15
0.197
55.33
0.64
-0.19
VE
50.0
54.0
52.0
2.00
0.394
52.00
-0.32
-1.15
VH
55.0
56.0
52.0
2.08
0.394
54.33
0.35
-0.48
VI
51.0
51.0
51.0
0.00
0.000
51.00
-0.61
-1.44









vo
53.0
59.0
59.0
3.46
0.591
57.00
1.12
0.29
vs
56.0
54.0
54.0
1.15
0.197
54.67
0.45
-0.38
w
52.0
58.0
55.0
3.00
0.591
55.00
0.55
-0.29
WD
54.0
55.0
53.0
1.00
0.197
54.00
0.26
-0.58








—•vysTft
MK








V.
I-WK







•"ZptS'f
7
wv







>? vv
WR
51.0
51.0
55.0
2.31
0.394
52.33
-0.22
-1.06
^w&J








WW
57.0
56.0
54.0
1.53
0.295
55.67
0.74
-0.10









X
51.0
53.0
53.0
1.15
0.197
52.33
-0.22
-1.06
XA
52.0
51.0
55.0
2.08
0.394
52.67
-0.13
-0.96
XB
50.0
49.0
48.0
1.00
0.197
49.00
-1.19
-2.02
^xc|








xd~
53.0
53.0
52.0
0.58
0.098
52.67
-0.13
-0.96
XF
48.0
50.0
50.0
1.15
0.197
49.33
-1.09
-1.92
•:XGv








XI
50.0
47.0
46.0
2.08
0.394
47.67
-1.57
-2.41
XK
68.0
59.0
50.0
9.00
2.470
59.00
1.70
0.87
-Fxq*








XT
49.0
49.0
49.0
0.00
0.000
49.00
-1.19
-2.02
«-tr
::'XUi
$2683i0j
c../ < /A.
#!0;i
¦ V /S At*,.

€64^47^
21.222"
i271300^

1^67101^
Y
53.0
53.0
56j0
1.73
0.295
54.00
0.2(T
-0 58
Data sorted by Laboratory Average
Average
Tag
Lab
Average Tag
Lab
Average
Tag
Lab
24.67
X
TC
46.33
CJ
49.00

XB
25.33
X
CX
46.33
AL
49.00

UV
26.33
X
MX
46.67
KH
49.33

XF
44.67
u
RK
47.33
SF
49.33

QU
44.67
w
QT
47.67
XI
49.67

NP
45.00

MT
47.67
TD
49.67

GL
45.00
u
AJ
48.00
BC
50.33

SN
45.67

MP
48.33
QW
50.33

RO
46.00

OT
48.33
QP
50.33

PW
46.00

LR
48.67
BA
50.33

BB
46.00

BH
49.00
XT
50.67

JS
• = No data submitted

TAG SYMBOLS

ft
= Above control limit
0 = Insufficient data

x = Determined to be an outlier

s Below control limit
-------
36/37
ESD-LV Performance Evaluation: Gamma in Water, 6-Nov-1998
Bariirm-133
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
50.67

JM
53.67

T
55.67

QM
50.67

BK
53.67

SI
55.67

FL
61.00

VI
53.67

EL
55.67

DH
51.00

SS
54.00

Y
55.67

DE
51.00

AK
54.00

WD
56.00

JY
51.33

TR
54.00

O
56.00

GQ
51.67

TQ
54.00

KX
56.00

EX
51.67

PM
54.00

DR
56.33

S
51.67

M
54.00

D
56.33

MV
51.67

HK
54.33

VH
56.33

BM
51.67

AU
54.33

U
56.67

SX
52.00

VE
54.33

NH
56.67

JG
52.00

KL
54.33

AY
56.67

DT
52.33

X
54.67

vs
56.67

BN
52.33

WR
54.67

N
57.00

VO
52.33

sv
54.67

CA
57.00

PX
52.33

R
54.67

A
57.00

PD
52.33

QX
55.00

W
57.00

HL
52.33

Q
55.00

UX
57.00

CP
52.33

FJ
55.00

RZ
57.33

HE
52.67

XD
55.00

L
57.33

CE
52.67

XA
55.00

JE
57.33

AZ
52.67

NJ
55.00

IU
58.00

NO
52.67

HI
55.00

E
58.00

EB
52.67

BO
55.00

CO
58.00

DO
53.00

TW
55.00

BL
59.00

XK
53.00

SR
55.00

AH
59.00

K
53.00

QZ
55.33

VC
59.00

DD
53.00

I
55.33

UP
59.33

TO
53.00

AW
55.33

SM
59.67

LF
53.00

AF
55.33

OM
60.33

LE
53.33

SD
55.33

CS
60.67

FE
53.33

P
55.33

AE
66.67
X
KX
53.33

C
55.67

WW
107.00
2713.00
X
X
OA
XU
% responding labs
10-
Frequency distribution
-4	-2	0	+2	+4
Normalized deviation of the mean from the known value
• = No data submitted
0 = Insufficient data
TAG SYMBOLS
x = Determined to be an outlier
ft s Above control limit
¦U = Below control limit
-------
ESD-LV Performance Evaluation: Gamma in Water, 6-Nov-1998
37/37
Barium-133
% responding labs
10-
Frequency distribution
-2	0	+2	+4
Normalized deviation of the mean from the grand average
-------
United States	Office of Research and	EPA/600/R-99/034
Environmental Protection	Development	March 1999
Agency	Washington, DC 20460
<&EPA Gross Alpha-Beta in Water
Performance Evaluation
Study
A Statistical Evaluation of
the November 13, 1998 Data
-------
Gross Alpha-Beta in Water
Performance Evaluation Study
November 13, 1998
Environmental Protection Agency
National Exposure Research Laboratory
Environmental Sciences Division
Las Vegas, Nevada
-------
A
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
OFFICE OF RESEARCH AND DEVELOPMENT
NATIONAL EXPOSURE RESEARCH LABORATORY
ENVIRONMENTAL SCIENCES DIVISION-LAS VEGAS
P.O. BOX 93478
LAS VEGAS, NEVADA 89193-3478
(702/798-2100)
Dear Participant,
Enclosed are the results of the Environmental Sciences Division (ESD-LV)
Performance Evaluation Study for Gross Alpha-Beta in Water; November 13, 1998.
The known value for each analysis was determined by gravimetric methods,
checked by chemical analyses performed by ESD-LV's Radiochemistry Laboratory,
and compared to the participating laboratories' grand average.
The expected precision, determined by the known value, was taken from
'Table 3. Laboratory Precision: One Standard Deviation Values and Control Limits
for Various Analyses", which is based on data accumulated over the years by the
Performance Evaluation Program, and can be found in the Environmental Radioactivity
Performance Evaluation Studies Program and Radioactive Standards Distribution
Program information brochure.
Please take a few minutes to review this report and the analytical data your
laboratory submitted to us. If there are any apparent discrepancies, please notify us
immediately.
We encourage you to make use of the computer-automated data-entry system
that has been in place for some time now. As the number of participants increases,
and it becomes unrealistic for us to receive results by mail or FAX, the computer
system will be our only avenue for accepting data.
If you have any questions or comments, please send a message via the data-entry
system or contact Stephen Pia at 702/798-2102 or Patricia Honsa at 702/798-2141.
Stephen Pla
Team Leader
RADQA Program
Enclosure
-------
NOTICE
This material has been funded wholly by
the U.S. Environmental Protection Agency.
It has been subjected to the Agency's review,
and has been approved for publication as
an EPA document.
-------
ESD-LV Performance Evaluation: Gross Alpha-Beta in Water, 13-Nov-1998 1/16
The following pages consist of separate sections for each of the nuclides in this study with four
parts per section. After the first, each part is separated from the next by a new page or a thick
horizontal bar. The first page of each section is a statistical summary for the nuclide and starts
with a statement of the known value, the control limits, and the warning limits.
The warning limits are placed at two normalized standard deviations above and below the
known value and the control limits are three normalized standard deviations above and below
the known value. If you keep control charts, these values will be useful for anticipating problems
with the accuracy of your analytical methods.
The coin shaped pie chart at the top of the summary page shows the fate of all the samples
sent out in number and percentage terms. The pie chart starts at the top and rotates clockwise.
The first sector represents those participants who submitted analytical results within both the
warning and control limits. The next sector represents those who are in the warning region but
not out of control. The third sector represents those who are out of control, but have passed
the outlier test. The fourth sector represents those who have failed the outlier test. The last
sector represents those participants who have failed to respond properly. This is the case if no
analytical results were returned, or less than three determinations were reported, or if the results
were received too late. The reeding on the edge of the coin is spaced at one percent intervals, and
the sector shading becomes darker as the data reliability decreases. Sectors with zero width are
not shown.
The table in the center shows a number of statistical quantities calculated from the submitted
data based on the mean and median values in relation to the known value, both before and after
outlier removal. The lower pie chart uses the same construction as the upper chart and shows
the distribution of properly submitted data in terms of deviation from the known value divided
into sectors representing one, two, three, and greater than three normalized standard deviations.
The second part is an alphabetical listing, in lab-code order, of submitted data and several
calculated quantities. An entry that is shaded has been rejected because of one of the reasons
listed above or failure of the outlier test. The fifth and sixth columns are a measure of laboratory
precision. The Range analysis is a normalized value that you may use to keep precision control
charts. The eighth and ninth columns are the differences from the mean of all non-outliers and
from the known value, respectively. If this value is between 2.0 and 3.0, your analytical process
precision is in the warning zone; if it exceeds 3.0 it is out of control. A tag symbol may appear in
the last column. Each page with tags has a symbol definition summary at the bottom. If there is
no tag symbol, the data is within the control limits, but it may be in the warning zone.
The third part is a three-column listing of result average, tag symbol, and lab-code in average
order excluding those labs not responding properly. In this order, all outliers and out-of-control
results appear at the top or bottom of the list.
The last part is two bar chart displays showing frequency distributions of responding
participants. The first chart places the known value at the center and a bar at each 0.2 unit of
expected precision. The second chart places the mean of the reported measurements at the center
and a bar at each 0.2 unit of standard deviation. In both cases, a bar includes those results within
0.1 unit up to the maximum of six, Any results more than six units from the center value are
shown cumulatively by a shaded bar one past the sixth unit. If the central tendency of the known
value distribution falls away from the center, an error in accuracy is indicated. If the distribution
is broad, poor precision is indicated. The mean value distribution is similar but uses the average
and standard deviation of reported results as its basis.
-------
2/16 ESD-LV Performance Evaluation: Gross Alpha-Beta in Water, 13-Nov-1998
The Range Analysis(R + SR) is calculated from the range, mean range and standard error of
the range values. The range is the difference between the maximum and minimum results for the
laboratory. The mean range is calculated by multiplying the expected precision by 1.693(for three
results). The standard error of the range is calculated by multiplying the mean range by 2.575(for
three results), subtracting the mean range from this product, and dividing the result by 3. If the
range is greater than the mean range, then the range analysis is calculated by subtracting the
mean range from the range, dividing the result by the standard error of the range and adding 1.
If the mean range is greater than or equal to the range, then the range analysis is calculated by
dividing the range by the mean range.
The normalized deviation of the mean from the grand average is calculated from the deviation
of the mean from the grand average and the standard error of the mean values. The deviation of
the mean from the grand average is calculated by subtracting the grand average from the
average of the laboratory's three results. The standard error of the mean is calculated by
dividing the expected precision by the square root of 3(the number of results). The normalized
deviation of the mean from the grand average is calculated by dividing the deviation of the mean
from the grand average by the standard error of the mean.
The normalized deviation of the mean from the known value is calculated from the deviation of
the mean from the known value and the standard error of the mean values. The deviation of the
mean from the known value is calculated by subtracting the known value from the average of the
laboratory's three results. The standard error of the mean is calculated by dividing the expected
precision by the square root of 3(the number of results). The normalized deviation of the mean
from the known value is calculated by dividing the deviation of the mean from the known value by
the standard error of the mean.
A complete explanation of the statistical calculations involved in the report may be found in
the Environmental Radioactivity Performance Evaluation Studies Program information brochure
[Draft Revision of EPA-600/4-81-004], available from Patricia Honsa, ESD-LV, 702/798-2141.
-------
ESD-LV Performance Evaluation: Gross Alpha-Beta in Water, 13-Nov-1998 3/16
J
, " ' \
Gross Alpha	Statistical Summary	185 Participants
The known value of this nuclide is 47.2 pCi/1 with an expected precision of 11.8; the control limits
are 26.7 to 67.7; the warning regions are 26.7 to 33.5 and 60.9 to 67.7
Statistic		Respondents	Non-outliers
Mean
31.33
Grand Avg 31.33
Std. Dev.
9.10
9.10
Variance
82.75
82.75
% Coef. of Var.
29.04
29.04
% deviation of mean from known value
-33.62
-33.62
Norm. dev. of mean from known value
-1.74
-1.74
Median
31.33
31.33
% deviation of median from known value
-33.62
-33.62
Norm. dev. of median from known value
-1.74
-1.74
-------
4/16 ESD-LV Performance Evaluation: Gross Alpha-Beta in Water, 13-Nov-1998
\»
r
Gross Alpha
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
A
40.7
38.2
40.3
1.34
0.125
39.73
1.23
-1.10

AE
39.2
33.7
41.1
3.84
0.370
38.00
0.98
-1.35

AF
29.8
26.4
29.2
1.81
0.170
28.47
-0.42
-2.75

"'AEL:-[,








•
AJ
17.1
25.4
21.5
4.15
0.415
21.33
-1.47
-3.80

AK
33.4
27.2
29.1
3.18
0.310
29.90
-0.21
-2.54

AL
43.4
40.6
40.9
1.54
0.140
41.63
1.51
-0.82

:*'AP.








. •
AR
36.3
39.8
41.7
2.74
0.270
39.27
1.17
-1.16

AU
42.2
36.3
40.1
2.99
0.295
39.53
1.20
-1.13

AW
27.3
28.4
30.6
1.68
0.165
28.77
-0.38
-2.71

AZ
34.9
32.4
28.9
3.01
0.300
32.07
0.11
-2.22

BA
32.7
38.4
35.0
2.87
0.285
35.37
0.59
-1.74

BB
20.5
22.4
25.1
2.31
0.230
22.67
-1.27
-3.60

BC
41.4
40.2
38.0
1.72
0.170
39.87
1.25
-1.08

BG








• ,
BH
33.3
39.0
33.9
3.13
0.285
35.40
0.60
-1.73

BK
36.2
34.3
33.6
1.35
0.130
34.70
0.49
-1.83

BL
30.3
29.5
33.2
1.95
0.185
31.00
-0.05
-2.38

BM
38.1
40.9
35.8
2.55
0.255
38.27
1.02
-1.31

BN
25.2
27.5
24.3
1.65
0.160
25.67
-0.83
-3.16

BO
35.7
49.9
32.1
9.41
0.891
39.23
1.16
-1.17

BS
37.4
43.6
45.5
4.24
0.405
42.17
1.59
-0.74

C
39.0
41.9
44.2
2.61
0.260
41.70
1.52
-0.81

CA
26.6
24.6
25.2
1.03
0.100
25.47
-0.86
-3.19
J
w








• -~ .
CE
33.2
42.0
39.8
4.58
0.440
38.33
1.03
-1.30

{cjJ-









CO
19.0
24.5
24.8
3.27
0.290
22.77
-1.26
-3.59
u
CP
27.8
26.4
30.2
1.92
0.190
28.13
-0.47
-2.80

cs
37.3
41.1
32.9
4.10
0.410
37.10
0.85
-1.48

cx
23.0
17.0
21.7
3.16
0.300
20.57
-1.58
-3.91
u
D
34.8
39.6
36.9
2.41
0.240
37.10
0.85
-1.48

DB
30.3
29.4
31.2
0.90
0.090
30.30
-0.15
-2.48

DD
23.8
22.6
21.1
1.35
0.135
22.50
-1.30
-3.63
u
DE
30.7
30.9
31.0
0.15
0.015
30.87
-0.07
-2.40

DH
35.6
43.0
39.0
3.70
0.370
39.20
1.16
-1.17

DO
41.0
32.0
35.0
4.58
0.451
36.00
0.69
-1.64

DR
8.8
8.3
10.0
0.87
0.085
9.03
-3.27
-5.60
u
DT
45.2
43.7
39.5
2.95
0.285
42.80
1.68
-0.65

DZ
33.3
32.1
30.8
1.25
0.125
32.07
0.11
-2.22

E
33.5
33.1
34.0
0.45
0.045
33.53
0.32
-2.01

EB
33.1
40.3
34.2
3.88
0.360
35.87
0.67
-1.66

EL








# .
EO
29.0
27.0
29.0
1.15
0.100
28.33
-0.44
-2.77

• = No data submitted TAG SYMBOLS 0 = Above control limit
0 s Insufficient data	x = Determined to be an outlier	II = Below control limit
-------
(f	
L
¦ - —	Jv
ESD-LV Performance Evaluation: Gross Alpha-Beta in Water, 13-Nov-1998 5/16
- _ .
Gross Alpha
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
ER
31.3
33.9
33.3
1.36
0.130
32.83
0.22
-2.11

EV
19.9
24.3
17.2
3.58
0.355
20.47
-1.59
-3.92
JL
ms&








¦ V:; ;
EX
19.8
20.1
20.3
0.25
0.025
20.07
-1.65
-3.98

FE
22.0
19.0
21.0
1.53
0.150
20.67
-1.57
-3.89
U









!jgj{
ZJ';









FL
26.9
27.1
31.3
2.48
0.220
28.43
-0.43
-2.75

FN
47.0
48.0
40.0
4.36
0.400
45.00
2.01
-0.32

GQ
34.3
34.9
36.0
0.86
0.085
35.07
0.55
-1.78

GZ
36.3
32.0
44.0
6.08
0.601
37.43
0.90
-1.43

HE
38.2
42.6
42.2
2.43
0.220
41.00
1.42
-0.9i

HI
27.2
18.8
21.5
4.29
0.420
22.50
-1.30
-3.63

HK
27.4
28.5
27.1
0.74
0.070
27.67
-0.54
-2.87

HL
40.1
29.5
41.3
6.49
0.591
36.97
0.83
-1.50

HP
19.4
18.0
18.4
0.72
0.070
18.60
-1.87
-4.20
Ji
I
33.5
32.8
32.0
0.75
0.075
32.77
0.21
-2.12

ID
40.8
32.7
35.7
4.10
0.405
36.40
0.74
-1.59

¦. ^xV-V '








•{
* -« .








( /
> s
JE
32.5
31.0
31.8
0.75
0.075
31.77
0.06
-2.27

JG
25.0
25.2
24.5
0.36
0.035
24.90
-0.94
-3.27
u
JM
31.6
30.7
31.1
0.45
0.045
31.13
-0.03
-2.36

JN
50.9
53.1
49.7
1.72
0.170
51.23
2.92
0.59

JP
40.0
38.0
36.0
2.00
0.200
38.00
0.98
-1.35

JQ
36.9
41.2
37.6
2.31
0.215
38.57
1.06
-1.27

JS
32.6
26.4
26.3
3.61
0.315
28.43
-0.43
-2.75

JY
38.3
30.4
40.4
5.27
0.501
36.37
0.74
-1.59

K
37.4
36.0
37.9
0.98
0.095
37.10
0.85
-1.48

KE
22.7
24.2
23.8
0.78
0.075
23.57
-1.14
-3.47

KH
26.5
28.8
27.1
1.19
0.115
27.47
-0.57
-2.90

KT
38.0
39.0
41.0
1.53
0.150
39.33
1.17
-1.15

KX
26.1
21.8
24.6
2.18
0.215
24.17
-1.05
-3.38
li
L
37.0
32.1
31.6
2.98
0.270
33.57
0.33
-2.00

LE
28.9
30.6
28.6
1.08
0.100
29.37
-0.29
-2.62

LF
28.0
27.0
33.0
3.21
0.300
29.33
-0.29
-2.62

LL
37.4
44.4
32.2
6.12
0.611
38.00
0.98
-1.35

LR
15.1
15.3
14.7
0.31
0.030
15.03
-2.39
-4.72

.'M-V








• -
MF
36.3
36.4
36.7
0.21
0.020
36.47
0.75
-1.58

MT








, • .
MV
28.7
27.0
32.0
2.54
0.250
29.23
-0.31
-2.64

MX
\ —
N
NA .
16.5
17.1
19.2
1.42
0.135
17.60
-2.02
-4.34
II
34.6
38.9
38.6
2.40
0.215
37.37
0.89
-1.44
9
• s No data submitted

TAG SYMBOLS

H = Above control limit
0 == Insufficient data
X S
Determined to be an outlier
= Below control limit
-------
6/16 ESD-LV Performance Evaluation: Gross Alpha-Beta in Water, 13-Nov-1998
Gross Alpha
. Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
;NB*









NH
24.0
27.0
26.0
1.53
0.150
25.67
-0.83
-3.16
if
NJ
20.5
26.4
29.3
4.48
0.440
25.40
-0.87
-3.20
J.
nkJ








: •'
NO
22.3
26.5
30.7
4.20
0.420
26.50
-0.71
-3.04
i
NP
26.4
26.3
25.4
0.55
0.050
26.03
-0.78
-3.11

O
38.8
38.0
34.8
2.12
0.200
37.20
0.86
-1.47

OA









OB
36.1
32.6
33.0
1.92
0.175
33.90
0.38
-1.95

OF
28.0
28.6
28.8
0.42
0.040
28.47
-0.42
-2.75

OS








~
OT








¦ *
OY









P
19.5
21.7
26.5
3.58
0.350
22.57
-1.29
-3.62
u
PB
32.2
33.8
32.3
0.90
0.080
32.77
0.21
-2.12

PD








, •
PG
30.3
28.1
34.3
3.14
0.310
30.90
-0.06
-2.39

PM
40.7
36.0
36.2
2.66
0.235
37.63
0.93
-1.40

Q
21.3
21.8
21.6
0.25
0.025
21.57
-1.43
-3.76
it
QM
20.3
17.1
15.7
2.36
0.230
17.70
-2.00
-4.33
u
QP
32.7
35.3
34.6
1.35
0.130
34.20
0.42
-1.91

QQ
36.9
37.5
36.1
0.70
0.070
36.83
0.81
-1.52

QT
36.0
34.5
40.9
3.35
0.320
37.13
0.85
-1.48

QU
26.5
33.5
30.1
3.50
0.350
30.03
-0.19
-2.52

QW
32.8
29.2
30.3
1.84
0.180
30.77
-0.08
-2.41

QX
8.4
9.7
8.3
0.78
0.070
8.80
-3.31
-5.64
u
QZ
31.7
32.4
34.5
1.46
0.140
32.87
0.23
-2.10

R
16.7
17.0
16.0
0.51
0.050
16.57
-2.17
-4.50
u
RB
41.8
36.7
38.3
2.61
0.255
38.93
1.12
-1.21

RD
39.2
46.0
47.1
4.28
0.395
44.10
1.87
-0.46

'rg








> '
R1
37.9
28.3
27.8
5.69
0.506
31.33
0.00
-2.33

RK








•
RR








•
RZ
39.6
36.5
36.6
1.76
0.155
37.57
0.92
-1.41

S
41.3
40.5
41.6
0.57
0.055
41.13
1.44
-0.89

SD
52.0
48.5
50.3
1.75
0.175
50.27
2.78
0.45

SF
25.5
26.0
25.5
0.29
0.025
25.67
-0.83
-3.16
u
SG
37.3
35.5
34.9
1.25
0.120
35.90
0.67
-1.66

SI
24.7
26.2
25.6
0.76
0.075
25.50
-0.86
-3.19

SL
25.2
24.5
24.4
0.44
0.040
24.70
-0.97
-3.30

SM
29.1
28.7
25.1
2.20
0.200
27.63
-0.54
-2.87

SN
28.7
26.3
29.8
1.79
0.175
28.27
-0.45
-2.78

SO
28.1
26.1
26.0
1.18
0.105
26.73
-0.67
-3.00

SR
34.3
35.3
33.7
0.81
0.080
34.43
0.46
-1.87

• =
No data submitted

TAG SYMBOLS

1? s Above control limit
0 s
Insufficient data
x =
Determined to be an outlier
H s Below control limit
-------
ESD-LV Performance Evaluation: Gross Alpha-Beta in Water, 13-Nov-1998 7/16
Gross Alpha
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
SS
33.1
32.5
34.0
0.75
0.075
33.20
0.27
-2.05

SU
7.1
5.9
9.8
2.00
0.195
7.60
-3.48
-5.81
L,










sx
22.3
20.3
21.0
1.01
0.100
21.20
-1.49
-3.82
F
¥3L









TD
24.1
25.0
24.1
0.52
0.045
24.40
-1.02
-3.35
V









'• - 4
TN
44.1
40.2
44.8
2.48
0.230
43.03
1.72
-0.61

Iro'









TQ
28.9
28.2
30.6
1.23
0.120
29.23
-0.31
-2.64

TW
25.7
21.4
26.2
2.64
0.240
24.43
-1.01
-3.34
i
~\r v<"
TX









TY
29.3
26.5
26.4
1.65
0.145
27.40
-0.58
-2.91

U
30.8
30.9
28.6
1.30
0.115
30.10
-0.18
-2.51

:'- UA "









UM








'• '
UP
38.8
31.8
33.0
3.74
0.350
34.53
0.47
-1.86

m








AJi V









J U* '¦*'
::VA;;



















VH
30.8
28.2
24.6
3.11
0.310
27.87
-0.51
-2.84

VI
28.8
35.4
29.5
3.63
0.330
31.23
-0.01
-2.34

VJ
27.9
26.8
32.2
2.85
0.270
28.97
-0.35
-2.68

VO
31.5
33.0
37.6
3.18
0.305
34.03
0.40
-1.93

VT
57.9
51.1
58.6
4.14
0.375
55.87
3.60
1.27

W
28.5
26.3
25.9
1.40
0.130
26.90
-0.65
-2.98

WE
4.3
5.1
3.4
0.85
0.085
4.27
-3.97
-6.30

WH
38.5
35.5
39.2
1.97
0.185
37.73
0.94
-1.39

^.WJ,:.\








> ;C-
WN
48.8
47.6
45.2
1.83
0.180
47.20
2.33
0.00

WO
21.4
14.0
25.8
5.96
0.591
20.40
-1.60
-3.93
J
P" yff » ~i,S
;WP-









WR
53.1
54.4
57.0
1.99
0.195
54.83
3.45
1.12

... ¦¦
ws









WW
38.1
32.5
29.8
4.23
0.415
33.47
0.31
-2.02

WX








• -.
X
36.8
45.9
47.9
5.92
0.556
43.53
1.79
-0.54

XB








•
XC








•
XD








; •
XF
37.8
43.8
46.7
4.54
0.446
42.77
1.68
-0.65

XI
32.0
20.0
24.0
6.11
0.601
25.33
-0.88
-3.21
J
XJ









xk








•Z-:.
• = No data submitted TAG SYMBOLS IT s Above control limit
m = T-cr^r^iit data	x s Determined to be an outlier	-It = Below control limit J
-------
f(	









	^
8/16 ESD-LV Performance Evaluation: Gross Alpha-Beta in Water, 13-Nov-1998

r
Gross Alpha










Lab Res. 1



Exper.
Rng anal

Normalized deviation

Res. 2
Res. 3 Sigma
(R + SR)
Average (grand-avg) (known) Tag
XL 40.2
41.8

42.1 1.02
0.095
41.37
1.47
-0.86

XM 26.1
_ 28.9

27.5 1.40
0.140
27.50
-0.56
-2.89



< '

3. j; ^





\ y-\-
XQ 1.8
	2.2


2.6	 0.40
	0.040
2.20
-4.28
-6.61
j
XT-5
UMUik1JUL.&1!]


-5 "> ' IC-
y. , *.
.y



- •.


Data sorted by Laboratory Average



Average
Tag
Lab

Average
Tag
Lab
Average

Tag
Lab
2.20
4
XQ

26.50
li
NO
32.77


I
4.27
U
WE

26.73

SO
32.83


ER
7.60
4
su

26.90

W
32.87


QZ
8.80
u
QX

27.40

TY
33.20


ss
9.03
u
DR

27.47

KH
33.47


WW
15.03
u
LR

27.50

XM
33.53


E
16.57
u
R

27.63

SM
33.57


L
17.60
u
MX

27.67

HK
33.90


OB
17.70
II
QM

27.87

VH
34.03


VO
18.60
u
HP

28.13

CP
34.20


QP
20.07
u
EX

28.27

SN
34.43


SR
20.40
u
WO

28.33

EO
34.53


UP
20.47
u
EV

28.43

JS
34.70


BK
20.57
u
CX

28.43

FL
35.07


GQ
20.67
u
FE

28.47

OF
35.37


BA
21.20
II
SX

28.47

AF
35.40


BH
21.33
u
AJ

28.77

AW
35.87


EB
21.57
11
Q

28.97

VJ
35.90


SG
22.50
u
m

29.23

TQ
36.00


DO
22.50
li
DD

29.23

MV
36.37


JY
22.57
u
P

29.33

LF
36.40


ID
22.67

BB

29.37

LE
36.47


MF
22.77
u
CO

29.90

AK
36.83


QQ
23.57

KE

30.03

QU
36.97


HL
24.17
u
KX

30.10

U
37.10


K
24.40
u
TD

30.30

DB
37.10


D
24.43
u
TW

30.77

QW
37.10


CS
24.70
u
SL

30.87

DE
37.13


QT
24.90
u
JG

30.90

PG
37.20


O
25.33

XI

31.00

BL
37.37


NA
25.40
li
NJ

31.13

JM
37.43


GZ
25.47
li
CA

31.23

VI
37.57


RZ
25.50
li
SI

31.33

RI
37.63


PM
25.67
11
SF

31.77

JE
37.73


WH
25.67
u
NH

32.07

DZ
38.00


JP
25.67
11
BN

32.07

AZ
38.00


AE
26.03
u
NP

32.77

PB
38.00


LL
• = No data submitted	TAG SYMBOLS	ft = Above control limit
0 = Insufficient data	x s Determined to be an outlier	II = Below control limit
—	yj
-------
ESD-LV Performance Evaluation: Gross Alpha-Beta in Water, 13-Nov-1998 9/16
Gross Alpha
Data sorted by Laboratory Average
Average Tag
Lab
Average
Tag Lab
Average
Tag
Lab
38.27
BM
39.73
A
42.80

DT
38.33
CE
39.87
BC
43.03

TN
38.67
JQ
41.00
HE
43.53

X
38.93
RB
41.13
S
44.10

RD
39.20
DH
41.37
XL
45.00

FN
39.23
BO
41.63
AL
47.20

WN
39.27
AE
41.70
C
50.27

SD
39.33
KT
42.17
BS
51.23

JN
39.53
AU
42.77
XT
54.83

WR




55.87

VT
% responding labs

Frequency distribution



10-
0 »B | w, !¦
fttjltlfilll
-4	-2	T	+2	+4
Normalized deviation of the mean from the known value
If
•6
+6
% responding labs	Frequency distribution
to-
pi .J	)i ty Mm | mmfm
¦JjL,
-4	-2	6	+2	+4	+6
Normalized deviation of the mean from the grand average
• s No data submitted	TAG SYMBOLS	IT = Above control limit
I n-. - T~r,,,m„;on+ Hstj)	x s Determined to be etn outlier	ft = Below control limit
-------
	 .
ESD-LV Performance Evaluation: Gross Alpha-Beta in Water, 13-Nov-1998 10/16
Gross Beta	Statistical Summary	185 Participants
The known value of this nuclide is 3.5 pCi/l with an expected precision of 5.0; the control limits
are 0.0 to 12.2; the warning regions are 0.0 to 0.0 and 9.3 to 12.2
45(24.3 %) Failed to respond \
, 104(56.2 %) Within all limits
5(2.7 %) Outliers •' / NV^
—	

7(3.6 %) Out of control'

-• 24(13.0 %) In warning zone
but not an outlier
r
ti \r03^
but within control
Statistic
Respondents
Non-outlieTs
Mean
9.26
Grand Avg 7.56
Std. Dev.
11.02
2.92
Variance
121.44
8.54
9a Coef. of Var.
118.96
38,66
% deviation of mean from known value
164.67
115.97
Norm. dev. of mean from known value
0.52
1.39
Median
7.67
7.43
% deviation of median from known value
119.05
112.38
Norm. dev. of median from known value
0.38
1.35
12(8.6 %) More than 3 norm. S.D.
24(17.1 %) Between 2 and 3 norm. S.D. •
47(33.6 %) Within 1 norm. S.O.
of Known value
57(40.7 %) Between 1 and 2 norm. S, D.
-------
g -- : :===
11/36 ESD-LV Performance Evaluation: Gross Alpha-Beta in Water, 13-Nov-l&98
	^
Gross Beta








Lab
Res. 1
Ues. 2
Res. 3
Exper.
Sigma
Rag anal
(R -f SR)
Average
Normalized deviation
(grand-avg) (known) Tag
A
6.4
5.1
4.7
0.35
0.083
5.07
-0.86
0.54

AE
7.6
6.8
7.2
0.40
0.095
7,20
-0.12
1.28

AF
8.6
9.0
8.7
0.21
0.047
8.77
0.42
1.82

AH








.. B
AJ
8,5
5.4
4.2
2.22
0.508
6.03
-0.53
0.88

AK
7.6
6.2
7.1
0.71
0.165
6.97
-0.21
1.20

AL
7,2
6.8
7.3
0.26
0.059
7.10
-0.16
1.25

;"AP-









AR
12.7
9.8
9.5
1.77
0.378
10,67
1.08
2.48

AU
2.6
6.4
6.2
2.14
0.449
5.07
-0.86
0.54

AW
7.4
8.6
9.5
1.05
0.248
8.50
0.33
1.73

AZ
5.8
3.9
3.9
1.10
Q.224
4.53
-1.05
0.36

BA
3.9
3.5
2.6
0.67
0.154
3.33
-1.46
-0.06

BB
10.6
10.4
8.4
1.22
0.260
9.80
0.78
2.18

BC
7.9
6.4
8.7
1.17
0.272
7.67
0.04
1.44

BG








•• *
BH
7.6
3.4
8.4
0 46
0.095
6.13
0.20
1.61

BK
6.8
6.5
6.9
0.21
0.047
6.73
¦0.29
112

BL
7.7
6.5
6.8
0.62
0.142
7.00
-0.19
1.21

BM
5.6
6.8
6.2
0.60
0.142
6.20
-0.47
0.94

BN
4.4
3.9
2.6
0.93
0.213
3.63
-1.36
0.05

BO
7.5
2.9
39
2.42
0.543
4.77
-0.&7
0.44

BS
8.4
8.6
8.0
0.31
0.071
8.33
0.27
1.67

C
5.9
6.0
6.0
0.06
0.012
5.97
-0.55
0.85

CA
~95?7/
88:9
94.9
3.72
.0.803
93.17;

31.06
X
CC








e
CE
. , ....
CJ
4.5
3.8
4.7
0.47
0.106
4.33
-1.12
0.29
--
CO
2.4
4.7
4.9
1.39
0.295
4.00
-1.23
0.17

CP
4.1
3.8
3.7
0.21
0.047
3.87
-1.28
0.13

cs
4.7
3.4
1.1
1.82
0.425
3.07
-1.56
-0.15

cx
8.8
6.5
7.2
1.18
0.272
7.50
-0.02
1.39

D
9.8
11.3
11.1
0.81
0.177
10.73
1.10
2.51

DB
15.9
15,0
161
0.59
0.130
15.67
2.81
4.21
¦R
DD
4.6
5.7
5.0
0.56
0.130
5.10
-0.85
0.55

DE
30
80
8.0
0.00
0000
8.00
0.15
3.56

DH
7.2
10.6
7.5
1.88
0402
8.43
0.30
1.71

DO
8.5
8.7
7.9
0.42
0.095
6.37
0.28
1.69

DR
7.5
7.0
7.2
0.25
0.059
7.23
-0.11
1.29

DT
9.0
9.2
9.0
0.12
0.024
9.07
0.52
1.93

DZ
10.1
8.8
11.4
1.30
0.307
10.10
0.88
2.29

E
8.2
9.2
8.2
0.58
0.118
8.53
0.34
1.74

EB
4.9
4.5
3.6
0.56
0.130
4.40
-1.09
0.31

EL









EO
S.Q
8.0
7.0
0.58
0.118
7.67
0.04
1.44
¦
• =
No data submitted

TAG SYMBOLS

ft s Above control limit
0 =
Insufficient data
x =
Determined to be an outlier
s Below control limit
-------
ESD-LV Performance Evaluation: Gross Alpha-Beta in Water, 13-Nov-1998 12/16
Gross Beta
Lab Res. 1
Res. 2
Res. 3
Exper. Rng anal
Normalized deviation
lERgT"'








EV
9.5
9.0
8.0
0.76
0.177
8.83
0.44
1.85
EW
7.3
10.3
7.3
1.73
0.354
8.30
0.26
1.66
EX
9.0
8.3
3.2
3.17
0.685
6.83
-0.25
1.15
FE
3.9
4.2
4.2
0.17
0.035
4.10
-1.20
0.21
iiirl








Wfk








FL
'(WS'W'M
V Hi-
12.4
9.3
BBS
9.1
'yrvwywv.'-"
feoj
1.85
«f3.46
0.390
10.27
2200:5
0.94
<• 
-------
13 / 16 ESD-LV Performance Evaluation: Gross Alpha-Beta in Water, 13-Nov-1998
Gross Beta
Exper. Rng anal	Normalized deviation
Lab
Res. 1
Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
.NB/V '







• ' -
NH
9.0
9.0
8.0
0.58
0.118
8.67
0.38
1.79

NJ
7.4
10.7
9.2
1.65
0.390
9.10
0.53
1.94

ink"-









NO
8.4
10.7
13.0
2.30
0.543
10.70
1.09
2.49

NP
2.2
5.1
3.0
1.50
0.343
3.43
-1.43
-0.02

O
6.6
6.6
6.3
0.17
0.035
6.50
-0.37
1.04

OA








' • *
OB
15.0
8.1
12.4
3.48
0.815
11.83
1.48
2.89

OF
6.5
6.6
6.9
0.21
0.047
6.67
-0.31
1.10

OS








•
OT








, •
oy









p
4.2
4.1
6.0
1.07
0.224
4.77
-0.97
0.44

PB
9.7
10.2
9.1
0.55
0.130
9.67
0.73
2.14

PD
17.3
16.5
16.9
0.40
0.095
16.90
3.24
4.64
rr
PG
7.0
7.1
7.9
0.49
0.106
7.33
-0.08
1.33

PM
6.1
8.8
5.3
1.83
0.413
6.73
-0.29
1.12

Q
7.0
7.3
8.0
0.51
0.118
7.43
-0.04
1.36

QM
5.0
5.7
5.4
0.35
0.083
5.37
-0.76
0.65

QP
2.3
2.5
2.4
0.10
0.024
2.40
-1.79
-0.38

QQ
6.2
6.5
6.7
0.25
0.059
6.47
-0.38
1.03

QT
5.9
3.6
4.8
1.15
0.272
4.77
-0.97
0.44

QU
8.1
9.0
7.8
0.62
0.142
8.30
0.26
1.66

QW
8.0
8.4
8.3
0.21
0.047
8.23
0.23
1.64

QX
3.7
3.8
3.7
0.06
0.012
3.73
-1.33
0.08

QZ
7.4
5.1
5.3
1.27
0.272
5.93
-0.56
0.84

R
12.2
9.5
9.4
1.59
0.331
10.37
0.97
2.38

RB
4.4
3.3
4.2
0.59
0.130
3.97
-1.24
0.16

kd"
WK;
Wa
12 5
7:31
2.380
moo;

5.?2
X
RG








' •
RE
7.0
5.8
5.3
0.87
0.201
6.03
-0.53
0.88

:SRK-








" •
mi









RZ
8.9
9.2
9.2
0.17
0.035
9.10
0.53
1.94

s
10.0
11.2
10.4
0.61
0.142
10.53
1.03
2.44

SD
15.3
14.3
16.3
1.00
0.236
15.30
2.68
4.09
ft
SF
4.9
5.0
4.9
0.06
0.012
4.93
-0.91
0.50

SG
8.8
9.3
7.1
1.15
0.260
8.40
0.29
1.70

SI
6.7
8.2
6.3
1.00
0.224
7.07
-0.17
1.24

SL
6.2
4.5
4.4
1.01
0.213
5.03
-0.87
0.53

SM
6.8
6.5
4.0
1.54
0.331
5.77
-0.62
0.79

SN
5.8
5.9
6.1
0.15
0.035
5.93
-0.56
0.84

SO
4.8
4.8
5.0
0.12
0.024
4.87
-0.93
0.47

SR
8.0
12.2
7.5
2.58
0.555
9.23
0.58
1.99

• —
No data submitted

TAG SYMBOLS

II = Above control limit
0 = Insufficient data	x = Determined to be an outlier	II = Below control limit
-------
ESD-LV Performance Evaluation: Gross Alpha-Beta in Water, 13-Nov-1998 14/16
Gross Beta
Exper. Rng anal	Normalized deviation
Lab
Res. 1
Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
SS
6.9
5.6
5.7
0.15
0.035
5.73
-0.63
0.77
SU
9.5
10.3
12.8
1.72
0.390
10.87
1.15
2.55
;sv"








sx
9.5
10.2
11.1
0.80
0.189
10.27
0.94
. 2.34
* ">•






«S•*>>
TD
1.4
2.4
4.5
1.58
0.366
2.77
-1.66
-0.25
iTL:








TN
8.4
8.3
12.1
2.17
0.449
9.60
0.71
2.11
Yto








TQ
5.4
3.8
5.8
1.06
0.236
5.00
-0.89
0.52
TW
6.6
5.6
6.1
0.50
0.118
6.10
-0.51
0.90
\TX~,








TY
3.1
4.4
3.0
0.7 8
0.165
3.50
-1.41
0.00
U
10.4
8.8
12.0
1.60
0.378
10.40
0.98
2.39
:V^
SUM:







•







: • Y
UP
9.2
8.8
8.9
0.21
0.047
8.97
0.49
189
¦:UQ:!








TJY
10.9
10.8
11.8
0.55
0.118
11.17
1.25
2.66
•VA







• * - W S' &
:•'
;yc •







;•
VH
16.6
12.1
11.1
2.93
0.650
13.27
1.98
3.38 tr
VI
7.5
9.1
6.9
1.14
0.260
7.83
0.10
1.50
VJ
9.6
7.1
10.3
1.68
0.378
9.00
0.50
1.91
VO
10.3
10.5
11.0
0.36
0.083
10.60
1.05
2.46
'iVTf
61.4

57;3 v
3.07
[6.69,7*!
54;83?
16> 38
17178" :x\:
W
6.9
6.0
7.1
0.59
0.130
6.67
-0.31
1.10
WE
1.4
1.7
1.3
0.21
0.047
1.47
-2.11
-0.70
WH
8.5
6.3
7.0
1.12
0.260
7.27
-0.10
1.30
rWJj







r
imi







I*
wo
4.6
4.6
5.6
0.58
0.118
4.93
-0.91
0.50 2
|wp|








WR
13.3
16.5
17.4
2.15
0.484
15.73
2.83
4.24 fl
T^rgT;







'' •
WW
5.4
8.1
4.6
1.83
0.413
6.03
-0.53
0.88
'WX'








X
3.6
3.2
4.1
0.45
0.106
3.63
-1.-36
0.05
XB







• .
XC







•
XD







•
XF
6.8
3.4
2.9
2.12
0.461
4.37
-1.11
0.30
XI
9.1
13.0
12.0
2.03
0.461
11.37
1.32
2/73
XJ







- • ^
XK
	1W ...
., 94.8 .
	-86.7*:-.
- . '8:55
2.943 ;
86.40 .
. 27:31.
28.^72 x
• = No data submitted TAG SYMBOLS ft = Above control limit
, 0 = Insufficient data	x s Determined to be an outlier	li = Below control limit
-------
15/16 ESD-LV Performance Evaluation: Gross Alpha-Beta in Water, 13-Nov-1998
Gross Beta
Lab Res. 1
Exper. Rng anal	Normalized deviation
Res. 2 Res. 3 Sigma (R + SR) Average (grand-avg) (known) Tag
XL
XM
XN
XQ
XT
10.3
4.1
9.9
3.6
9.0
5.7
0.67
1.10
0.154
0.248
9.73
4.47
0.75
-1.07
2.16
0.33
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
1.43

JQ
5.77

SM
8.13

BH
1.47

WE
5.93

SN
8.17

LE
2.07

JP
5.93

QZ
8.23

QW
2.40

QP
5.97

c
8.30

QU
2.77

TD
6.03

WW
8.30

EW
3.07

cs
6.03

RI
8.33

BS
3.33

BA
6.03

AJ
8.37

LF
3.43

NP
6.10

TW
8.37

DO
3.50

TY
6.20

BM
8.40

SG
3.63

X
6.30

LL
8.40

HL
3.63

BN
6.47

QQ
8.43

KH
3.73

QX
6.50

O
8.43

DH
3.87

CP
6.67

W
8.50

K
3.97

RB
6.67

OF
8.50

AW
4.00

CO
6.67

KX
8.53

E
4.10

FE
6.73

PM
8.57

MF
4.33

CE
6.73

LR
8.60

HK
4.37

XF
6.73

BK
8.60

HE
4.40

EB
6.83

FjX
8.67

NH
4.47

XM
6.97

AK
8.67

JG
4.50

JS
7.00

BL
8.77

AF
4.53

AZ
7.03

MV
8.83

EV
4.77

QT
7.07

SI
8.87

HI
4.77

P
7.10

AL
8.97

UP
4.77

BO
7.20

HP
9.00

VJ
4.87

SO
7.20

AE
9.00

JY
4.93

WO
7.23

DR
9.07

DT
4.93

SF
7.27

WH
9.10

RZ
5.00

TQ
7.33

PG
9.10

NJ
5.03

SL
7.37

NA
9.23

SR
5.07

AU
7.43

Q
9.60

TN
5.07

A
7.50

cx
9.67

PB
5.10

DD
7.67

EO
9.73

XL
5.23

GQ
7.67

BC
9.80

«JE
5.37

QM
7.83

VI
9.80

BB
5.67

I
7.90

MX
9.97

JM
5.73

SS
8.00

DE
10.07

ID
• = No data submitted
0 = Insufficient data
TAG SYMBOLS
x = Determined to be an outlier
fl = Above control limit
U- = Below control limit
-------
* ' - ¦ ' ~ ' ' ~¦' ^
ESD-LV Performance Evaluation: Gross Alpha-Beta in Water, l3-Nov-1998 16/16
Gross Beta
Data sorted by Laboratory Average
Average Is
ifi Lab
Average
Tag
Lab
Average
Tag
Lab
10.10
DZ
10.70

NO
14.20
ft
GZ
10.27
sx
10.73

D
15.30
ft
SD
10.27
FL
10.87

su
15.67
ft
DB
10.37
R
11.00

KT
15.73
ft
WR
10.40
U
11.17

UY
16.90
ft
PD
10.53
s
11.17

KE
20.00
X
RD
10.60
vo
11.37

XI
22.00
X
FN
10.60
L
11.83

OB
54.83
X
VT
10.67
AR
13.27
t
VH
86.40
X
XK


13.33
ft
JN
93.17
X
CA
% responding labs	Frequency distribution
)0>

	,	,	,	,	,¦ ¦¦¦WWfWfMM, ¦ »t"	¦	-r*
-6	-4	-2	0	+2	+A	+4
Normalized deviation of the mean fiom the known value
responding laba	Frequency distribution	
10-
-¦¦filiiftL),
. n— I	—y—y—I——^1 £a	f. ¦¦¦ t ¦	,—m—T	pil
-6	-2	0	+2	+4	+6
Normalized deviation of the mean from the grand average
• s No data submitted	TAG SYMBOLS	ft e Above control limit
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