Results From EPAs Drinking Water Radiochemistry Performance Evaluation Studies For Calendar Year 1997


United States	Office of Research and	EPA/600/R-99/075
Environmental Protection	Development	August 1999
Agency	Washington, DC 20460
4»EPA Results from EPA's Drinking
Water Radiochemistry
Performance Evaluation
Studies for Calendar Year 1997
339POS99 cov 075

-------
TECHNICAL REPORT DATA
1. Report No.
EPA/600/R-99fflW-
2.
3. Recipient's Accession No.
4. Title and Subtitle

S. Report Date
01/01/97-12/31/97
Kesuits trom tPA s urinKing water Kadiocnemistry Hertormance tvaiuation btuaies tor
Calendar Year 1997
6. Performing Organization Code
7. Author(s)
Pia, S. H.
8. Performing Organization Report
No. (TIP#)
NERL-LV 99-102
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 1997
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 COS ATI
18. Distribution Statement
19 Security Class (This Report)
UNCLASSIFIED
21. No of Pages
404
RELEASE TO THE PUBLIC
20 Secunty Class (This Page)
UNCLASSIFIED
22. Price
EPA 2220-1

-------
flUG-06-1999 14=41
USEPfi
ORD CLEARANCE FORM
513 5S9 756S P.05/06
1. EPA Report He.
EPA/eoo/n-aa/ a 7
2. Product Code
n
3. Ub/ Draft No.
NIRl-LV 99-102
4. Copyright Nnrirtlcn |
0 Yes (Attached) |
x Not Applicable
9. Tttfo
Results from BPA's Oiinkmg Weter Radtoehemistry performance Evaluation Studies for Cdendw Year 1897
V Authorial b» oniar d euthorahip, Affiliation, and Addraw (identify CPA authors with Lab/Comerl
Pie. S. H.
U.S. BPA
Nation^ Sxposur* Research Laboratory
Environmental Sdepc«« Division. Environmental Cheminry Branch
PO Box 93*78
U» Vffles, NV 88193-3478
>} Ifrrmw AtHf"	>t it vaur preferred or active URL). Attach diskette corrtainina *h> aPttract tn WordPerfect,
N/A
9. Project Offioer Name, Telephone No. and Contrect/IAO, CAS #
S. Pia, 702/796-2102
6. Oil IS Teik No.. QPRA ID (eg. 080101 >. APC, end APM
Project § J 0*7?
10. CoiwactrtAO/AarieUne* Agreement No.
K/A
11. Product Type'
~	Peer faviewed Journal Article (See block. 121
X Pvbtahed Report
a Summary
~	Symposium Poper (See MaaK 12)
~	Book Chapter (Sao block 12)
O Exhibit/Po«t«r
0 EPA&petwxed Coaffcrenca/Swrrinar/Wbrttfihcp
~	Research Brief or luue Paper
~	Newsletter
~	Internal Report (distribution limited to EPA)
~	Unpubftahtd Report
~	Computer Product, Scientific Oet«
~	Other 			
(Identify pmtu& type Use btodc 12 if needed)
12. iiUogtapHc CHadon t^or eympo»is papers and abstracts, guST
name, place and dote. For retarded pubficaticne, give name vtfwnt
manuscript It being submitted, accepted or published.)
Submitted
Accepted,
. PUtottehad_
13, Technical Information Manager
M>
Signature

14, SfgroUira/D,
Steqpen pia. Originator
15. Comifwmi or Keyword*

Christian, G. Oaughtoft, Supervisor
16a. Product*t Peer Review Category
l i. Thlj pro Sues enunciates new pofey or affect* listing policy?
(flafereed paper* are usually Category 3; abstract*, BPA report!
ana non-refereed products are usually Category 4J
0 1. Major sd. & tech. work product IAA signs m 18)
~ 2. Important sci. & tech. work product (LD ttgns in 18)
D 3. General so'. & tech, work product (BC eigne 14, DD tfena 18)
X 4. Other science & tech. work product (BC eigne 14 and 18)
16b.
. Contact for peer review comment* fSionaturf and date)
Ctwos* and inMel one). O Vas. m«»no enacted.	X NoT
18. Leb/Center Director Signature end Pet*
(Tale and Signature)
ORD-362 tC!n. Aev. 2/991

-CAfjitlan Q. Dauohton. r.w, Enulronnn«ntal	Branch pete
C:\Z_owrlv^boc\w»V8cyfm^^vrpfl

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United States	Office of Research and	EPA/600/R-97/040	C-
Environmental Protection Development	April 1997
Agency	Washington, DC 20460
EPA Strontium in Water
Performance
Evaluation Study
A Statistical Evaluation of
the January 17, 1997 Data

-------
Strontium in Water
Performance Evaluation Study
January 17, 1997
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 17, 1997.
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, 17-Jan-1997 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 defmition 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, 17-Jan-1997
The Range AnaIysifl(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: Strontium in Water, 17-Jan-1997
3/12
Strontium-89	Statistical Summary	99 Participants
The known value of this nuclide is 12.0 pCi/1 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
22(22.2 %) Failed to respond \
, 65(65.7 %) Within all limits

• \K
3(3.0 %) Outliers • ! \JV
		

4(4.0 %) Out of control '

5(5.1 %) In warning zone
but not an outlier ^_
I I
I I I
but within control
Statistic
Respondents
Non-outliers
Mean
14.21
Grand Avg 11.78
Std. Dev.
14.44
4.08
Variance
208.60
16.66
%Coef. ofVar.
101.62
34.65
% deviation of mean from known value
18.43
-1.84
Norm. dev. of mean from known value
0.15
-0.05
Median
12.00
11.67
% deviation of median from known value
0.00
-2.78
Norm. dev. of median from known value
0.00
-0.08
7(9.1 %) More than 3 norm. S.D. »
5(6.5 %) Between 2 and 3 norm. S.D. •
; 42(54.5 %) Within 1 norm. S.D.
of known value
* 23(29.9 %) Between 1 and 2 norm. S.D.

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4/12
ESD-LV Performance Evaluation: Strontium in Water, 17-Jan-1»97


Strontium-89








Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation

Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
A
10.0
10.0
10.0
0.00
0.000
10.00
-0.62
-0.69

AE
15.0
16.0
12.0
2.08
0.473
14.33
0.88
0.81

AF
13.0
13.0
13.0
0.00
0.000
13.00
0.42
0.35

AJ
12.0
15.0
16.0
2.08
0.473
14.33
0.88
0.81

AK
12.0
12.0
11.0
0.58
0.118
11.67
-0.04
-0.12

AL
14.0
18.0
15.0
2.08
0.473
15.67
1.35
1.27

AU
12.0
12.0
13.0
0.58
0.118
12.33
0.19
0.12

AW
11.0
9.0
8.0
1.53
0.354
9.33
-0.85
-0.92

AY "








•
AZ
10.0
9.0
11.0
1.00
0.236
10.00
-0.62
-0.69

BA
15.0
15.0
18.0
1.73
0.354
1600
1.46
1.39

BB








* •
BC
12.0
12.0
12.0
0.00
0.000
12.00
0.08
0.00

BG








•
BH
13.0
15.0
14.0
1.00
0.236
14.00
0.77
0.69

BL
14.0
11.0
15.0
2.08
0.473
13.33
0.54
0.46

BM
15.0
16.0
17.0
1.00
0.236
16.00
1.46
1.39

BO
16.0
19.0
16.0
1.73
0.354
17.00
1.81
1.73

C
11.0
11.0
12.0
0.58
0.118
11.33
-0.15
-0.23

CA
9.0
10.0
10.0
0.58
0.118
9.67
-0.73
-0.81

'tpif









••GE








• - '
CG
7.0
1.0
1.0
3.46
0.709
3.00
-3.04
-3.12

CJ
9.0
10.0
11.0
1.00
0.236
10.00
-0.62
-0.69

CO
1.0
1.0
4.0
1.73
0.354
2.00
-3.39
-3.46

cs
6.0
12.0
9.0
3.00
0.709
9.00
-0.96
-1.04

cx
17.0
14.0
19.0
2.52
0.591
16.67
1.69
1.62

D
7.0
5.0
7.0
1.15
0.236
6.33
-1.89
-1.96

DD
89.0

Ma
16.37
5.396
99.33
30.33
30,25
X
DE
11.0
12.0
12.0
0.58
0.118
11.67
-0.04
-0.12

DO
11.0
17.0
14.0
3.00
0.709
14.00
0.77
0.69

DT
9.0
9.0
7.0
1.15
0.236
8.33
-1.19
-1.27

DZ
14.0
14.0
14.0
0.00
0.000
14.00
0.77
0.69

E
10.0
9.0
8.0
1.00
0.236
9.00
-0.96
-1.04

EB
14.0
9.0
13.0
2.65
0.591
12.00
0.08
0.00

EL
10.0
11.0
14.0
2.08
0.473
11.67
-0.04
-0.12

FE
14.0
14.0
13.0
0.58
0.118
13.67
0.65
0.58

Ffz








.? • "
GQ
16.0
17.0
16.0
0.58
0.118
16.33
1.58
1.50

HK
9.0
9.0
9.0
0.00
0.000
9.00
-0.96
-1.04

HP
16.0
19.0
14.0
2.52
0.591
16.33
1.58
1.50

I
17.0
18.0
17.0
0.58
0.118
17.33
1.92
1.85

vw
JE
16.0
10.0
18.0
4.16
0.945
14.67
1.00
0.92

JS
12.0
11.0
9.0
1.53
0.354
10.67
-0.39
-0.46

• s No data submitted TAG SYMBOLS It s Above control limit
[ 0 = Inaufficieot data	x = Determined to be an outlier	It == Below control limit

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ESD-LV Performance Evaluation: Strontium in Water* 17-Jan-1&97	5/12
r
Strontium-89







Lab
Res. X
Res. 2
Res. 3
Exper.
Sigma
Rag anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
JY
9.0
9.0
8.0
0.58
0.118
8.67
-1.08
-1.15
K
3.0
7.0
9.0
3.06
0.709
6.33
-1.89
-1.96
KH
8.0
9.0
12.0
2.08
0.473
9.67
-0.73
-0.81
KL
9.0
10.0
11.0
1.00
0.236
10.00
-0.62
-0.69
vBX?








l"
16.0
15.0
15.0
0.58
0.118
15.33
1.23
1.15
LE
8.0
9.0
5.0
2.08
0.473
7.33
-1.54
-1.62
LF
20.0
22.0
17.0
2.52
0.591
19.67
2.73
2.66
LT
4.0
4.0
4.0
0.00
0.000
4.00
-2.69
-2.77
M
18.0
17.0
18.0
0.58
0.118
17.67
2.04
1.96
N
14.0
12.0
12.0
1.15
0.236
12.67
0.31
0.23
jNJ"
102:0 •
mM
mo;
;e:ij"
1.705/
,w v
96.67
29.41"
29.33 x: ^
NO







• /¦:-
NT
9.0
9.0
9.0
0.00
0.000
9.00
-0.96
-1.04
OA
13.0
13.0
14.0
0.58
0.118
13.33
0.54
0.46
PB
9.0
9.0
10.0
0.58
0.118
9.33
-0.85
-0.92
PV
11.0
15.0
15.0
2.31
0.473
13.67
0.65
0.58
Q
10.0
16.0
11.0
3.21
0.709
12.33
0.19
0.12
QM
11.0
11.0
12.0
0.58
0.118
11.33
-0.15
-0.23
QU
13.0
12.0
12.0
0.58
0.118
12.33
0.19
0.12
QW
13.0
12.0
12.0
0.58
0.118
12.33
0.19
0.12
QZ
11.0
11.0
11.0
0.00
0.000
11.00
-0.27
-0.35
R
5.0
5.0
5.0
0.00
0.000
5.00
-2.35
-2.42
RF
12.0
12.0
14.0
1.15
0.236
12.67
0.31
023
IbkI







T *>"'L'r
RR
13.0
13.0
13.0
0.00
0.000
13.00
0.42
0.35
S
11.0
11.0
12.0
0.58
0.118
11.33
-0.15
-0.23
sc
9.0
8.0
9.0
0.58
0.118
8.67
-1.08
-1.15
SD
11.0
11.0
13.0
1.15
0.236
11.67
-0.04
-0.12 _
¦W'







^ '
SI
22.0
21.0
22.0
0.58
0.118
21.67
3.43
3.35 Jr








•
SM
9.0
8.0
9.0
0.58
0.118
8.67
-1.08
-1.15
88
4.0
7.0
8.0
2.08
0.473
6.33
-1.89
-1.96
SZ
12.0
14.0
11.0
1.53
0.354
12.33
0.19
0.12
T
""-XT
z-U
ATH;
^TL":
11.0
32$g
11.0
Stfva-'wj -r~:
28;0;
12.0
120,Ot
0.58
0.118
/1;795:~
11.33
-0.15
Ml
-0.23
Mi
TQ
8.0
10.0
9.0
1.00
0.236
9.00
-0.96
-1.04
fCTi








"UE
11.0
10.0
7.0
2.08
0.473
9.33
-0.85
-0.92
UP
5.0
4.0
3.0
1.00
0.236
4.00
-2.69
-2.77
VA
21.0
28.0
24.0
3.51
0.827
24.33
4.35
4.27 tt

No data submitted

TAG SYMBOLS

Tf = Above control limit
5>
ill
Insufficient data
x =
Determined to be an outlier
ii = Below control limit

-------
6/12
ESD-LV Performance Evaluation: Strontium in Water, 17-Jan-1997
Strontium-89
Lab
Res. 1
Exper. Rng anal	Normalized deviation
Res. 2 Res. 3 Sigma (R + SR) Average (grand-avg) (known) Tag
VI
w
WG
WI
WJ
WO
WR
W8
X
18.0
11.0
22.0
9.0
16.0
9.0
3.06
1.15
0.709
0.236
18.67
9.67
2.39
-0.73
2.31
-0.81
12.0
14.0
11.0
1.53

0.354
12.33
0.19

0.12

Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
2.00
U
CO
10.00

CJ
13.33

BL
3.00
I
CG
10.00

AZ
13.67

PV
4.00

UP
10.00

A
13.67

FE
4.00

LT
10.67

JS
14.00

DZ
5.00

R
11.00

qz
14.00

DO
6.33

ss
11.33

T
14.00

BH
6.33

K
11.33

S
14.33

AJ
6.33

D
11.33

QM
14.33

AE
7.33

LE
11.33

C
14.67

JE
8.33

DT
11.67

SD
15.33

L
8,67

SM
11.67

EL
15.67

AL
8.67

sc
11.67

DE
16.00

BM
8.67

JY
11.67

AK
16.00

BA
9.00

TQ
12.00

EB
16.33

HP
9.00

NT
12.00

BC
16.33

GQ
9.00

HK
12.33

X
16.67

CX
9.00

E
12.33

sz
17.00

BO
9.00

CS
12.33

QW
17.33

I
9.33

UE
12.33

QU
17.67

M
9.33

PB
12.33

Q
18.67

VI
9.33

AW
12.33

AU
19.67

LF
9.67

W
12.67

RF
21.67
ft
SI
9.67

KH
12.67

N
24.33
1t
VA
9.67

CA
13.00

RR
26.67
X
TD
10.00

KL
13.00

AF
96.67
X
NJ



13.33

OA
99.33
X
DD
• s No data submitted	TAG SYMBOLS	ft = Above control limit
0 h Insufficient data	x = Determined to be an outlier	11 s Below control limit J
^	.....	.....	. .	.	-V

-------
ESD-LV Performance Evaluation: Strontium in Water, 17-Jan-1997	7/12
Strontium-89
% responding labs	Frequency distribution
10-
a - f — b|b|JJ|IbtbiiBit
-2	0	+2
¦¦ ¦ ¦	r"	T	r®
-4	-2	0	+2	+4	+6
Normalized deviation of the mean from the known value
% responding labs	Frequency distribution
10-

00-,	,	 - T ¦- ¦- -T
-6	-4	-2	0	+2	+4	+6
Normalized deviation of the mean from the grand average

-------
ESD-LV Performance Evaluation: Strontium in Water, 17-Jan-1997
8/12
Strontium-90	Statistical Summary	99 Participants
The known value of this nuclide is 25.0 pCi/1 with an expected precision of 5.0; the control limits
are 16.3 to 33.7; the warning regions are 16.3 to 19.2 and 30.8 to 33.7
15(15.2 %) Failed to respond *»,
. 74(74.7 %) Within all limits
2(2.0 %) Outliers * /


6(6.1 %) Out of control *

2(2.0 %) In warning zone
but not an outlier
-n
but within control
Statistic
Respondents
Non-outliers
Mean
27.13
Grand Avg 23.52
Std. Dev.
23.51
3.70
Variance
552.65
13.72
% Coef. of Var.
86.66
15.74
% deviation of mean from known value
8.51
-5.90
Norm. dev. of mean from known value
0.09
-0.40
Median
23.83
23.50
% deviation of median from known value
-4.67
-6.00
Norm. dev. of median from known value
-0.05
-0.40
8(9.5 %) More than 3 norm. S.D. »
2(2.4 %) Between 2 and 3 norm. S.D.
,60(71.4 %) Within 1 norm. S.D.
'	of Known value
14(16.7 %) Between 1 and 2 norm. S.D.

-------
I^/IZ	ESD-LV Performance Evaluation: Strontium in Water, 17-Jan-1997
. ...
Strontium-90
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
"V
Normalized deviation
(grand-avg) (known) Tag
A
24.0
25.0
25.0
0.58
0.118
24.67
0.40
-0.12
AE
23.0
22.0
23.0
0.58
0.118
22.67
-0.30
-0.81
AF
23.0
23.0
23.0
0.00
0.000
23.00
-0.18
-0.69
AJ
24.0
22.0
22.0
1.15
0.236
22.67
-0.30
-0.81
AK
23.0
24.0
23.0
0.58
0.118
23.33
-0.07
-0.58
AL
22.0
21.0
23.0
1.00
0.236
22.00
-0.53
-1.04
AU
25.0
26.0
25.0
0.58
0.118
25.33
0.63
0.12
AW
26.0
26.0
26.0
0.00
0.000
26.00
0.86
0.35
AY







••" '
AZ
26.0
27.0
26.0
0.58
0.118
26.33
0.97
0.46
BA
23.0
24.0
23.0
0.58
0.118
23.33
-0.07
-0.58
BB
25.0
25.0
25.0
0.00
0.000
25.00
0,51
0.00
BC
23.0
23.0
22.0
0.58
0.118
22.67
-0.30
-0.81
BG
18.0
22.0
22.0
2.31
0.473
20.67
-0.99
-1.50
BH
23.0
23.0
23.0
0,00
0.000
23.00
-0.18
-0.69
BL
23.0
25.0
24.0
1.00
0.236
24.00
0.16
-0.35
BM
24.0
23.0
23.0
0.58
0.118
23.33
-0.07
-0.58
BO
21.0
21.0
21.0
0.00
0.000
21.00
-0.87
-1.39
C
25.0
25.0
24.0
0.58
0.118
24.67
0.40
-0.12
CA
23.0
24.0
25.0
1.00
0.236
24.00
0.16
-0.35
"¦-co"







"•' » <> -
CE
27.0
26.0
27.0
0.58
0.118
26.67
1.09
0.58
CG
31.0
34.0
33.0
1.53
0.354
32.67
3.17
2.66
CJ
26.0
25.0
24.0
1.00
0.236
25.00
0.51
0.00
CO
22.0
23.0
21.0
1.00
0.236
22.00
-0.53
-1.04
cs
29.0
25.0
27.0
2.00
0.473
27.00
1.20
0.69
cx
24.0
25.0
23.0
1.00
0.236
24.00
0.16
-0.35
D
24.0
25.0
26.0
1.00
0.236
25.00
0.51
0.00
DD
183.0
186(0
173.0
6.43
1.795
180.33;
54.32
53.81 X
DE
26.0
26.0
26.0
0.00
0.000
26.00
0.86
0.35
DO
22.0
22.0
23.0
0.58
0.118
22.33
-0.41
-0.92
DT
220
23.0
24.0
1.00
0.236
23.00
-0.18
-0.69
DZ
25.0
26.0
27.0
1.00
0.236
26.00
0.86
0.35
E
24.0
26.0
25.0
1.00
0.236
25.00
0.51
0.00
EB
19.0
22.0
18.0
2.08
0.473
19.67
-1.34
-1.85
EL
23.0
22.0
23.0
0.58
0.118
22.67
-0.30
-0.81
FE
23.0
23.0
23.0
0.00
0.000
23.00
-0.18
-0.69
*'FZ-:








GQ
22.0
23.0
24.0
1.00
0.236
23.00
-0.18
-0.69
HK
22.0
23.0
23.0
0.58
0.118
22.67
-0.30
-0.81
HP
13.0
12.0
17.0
2.65
0.591
14.00
-3.30
-3.81 I
T -r" y
29.0
27.0
28.0
1.00
0.236
28.00
1.55
1.04 		
\
JE
27.0
17.0
26.0
5.51
1.345
23.33
-0.07
j » _
-0.58
JS
23.0
22.0
25.0
1-53
0.354
23.33
-0.07
-0.58
L -
No data submitted
Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
ft s Above control limit
= Below control limit
		—. ¦ — 				— -—	—

-------
ESD-LV Performance Evaluation: Strontium in Water, 17-Jan-1997
10/12
Strontium-90
Lab Res. 1
Res. 2
Res. 3
Exper. Rng anal	Normalized deviation
Sigma (R + SR) Average (grand-avg) (known) Tag

JY
21.0
23.0
23.0
1.15
0.236
22.33
-0.41
-0.92
K
22.0
23.0
22.0
0.58
0.118
22.33
-0.41
-0.92
KH
25.0
25.0
25.0
0.00
0.000
25.00
0.51
0.00
KL
25.0
25.0
27.0
1.15
0.236
25.67
0.74
0.23








, £• ~
24.0
24.0
24.0
0.00
0.000
24.00
0.16
-0.35
LE
23.0
23.0
23.0
0.00
0.000
23.00
-0.18
-0.69
LF
22.0
25.0
20.0
2.52
0.591
22.33
-0.41
-0.92
LT
11.0
14.0
11.0
1.73
0.354
12.00
-3.99
-4.50
M
24.0
25.0
26.0
1.00
0.236
25.00
0.51
0.00
N
23.0
23.0
22.0
0.58
0.118
22.67
-0.30
-0.81

PS
s:ii73i(Xj,
=172.0
;:6.5f

k
{>0&1|
mob;
NO
14.0
15.0
16.0
1.00
0.236
15.00
-2.95
-3.46
NT
34.0
35.0
35.0
0.58
0.118
34.67
3.86
3.35
OA
21.0
21.0
20.0
0.58
0.118
20.67
-0.99
-1.50
PB
26.0
25.0
26.0
0.58
0.118
25.67
0.74
0.23
PV
28.0
31.0
29.0
1.53
0.354
29.33
2.01
1.50
Q
22.0
25.0
26.0
2.08
0.473
24.33
0.28
-0.23
QM
24.0
25.0
23.0
1.00
0.236
24.00
0.16
-0.35
QU
24.0
25.0
23.0
1.00
0.236
24.00
0.16
-0.35
QW
24.0
21.0
24.0
1.73
0.354
23.00
-0.18
-0.69
QZ
23.0
25.0
25.0
1.15
0.236
24.33
0!28
-0.23
R
19.0
22.0
23.0
2.08
0.473
21.33
-0.76
-1.27
RF
13.0
14.0
12.0
1.00
0.236
13.00
-3.65
-4.16
';RK^








RR
25.0
25.0
24.0
0.58
0.118
24.67
0.40
-0.12
S
21.0
22.0
22.0
0.58
0.118
21.67
-0.64
-1.15
sc
22.0
23.0
22.0
0.58
0.118
22.33
-0.41
-0.92
SD
27.0
27.0
27.0
0.00
0.000
27.00
1.20
0.69
;1p1








si
17.0
17.0
16.0
0.58
0.118
16.67
-2.38
-2.89
SL
13.0
14.0
12.0
1.00
0.236
13.00
-3.65
-4.16
SM
26.0
27.0
26.0
0.58
0.118
26.33
0.97
0.46
SS
27.0
25.0
27.0
1.15
0.236
26.33
0.97
0.46
SZ
25.0
23.0
24.0
1.00
0.236
24.00
0.16
-0.35
T
23.0
24.0
24.0
0.58
0.118
23.67
0.05
-0.46
TD
-'I'Hi
22.0
28.0
26.0
3.06
0.709
25.33
0.63
0.12









JT^L
26.0
25.0
25.0
0.58
0.118
25.33
0.63
0.12
.









25.0
25.0
28.0
1.73
0.354
26.00
0.86
0.35
UP
24.0
24.0
25.0
0.58
0.118
24.33
0.28
-0.23
VA
27.0
34.0
29.0
3.61
0.827
30.00
2.24
1.73

tr
u
'•.V.

¦**»... i*


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

-------
11/12 ESD-LV Performance Evaluation: Strontium in Water, 17-Jan-1997
Strontium-90
Lab
Res. 1



Exper.
Rng anal

Normalized deviation

Res. 2
Res. 3 Sigma
(R + SR)
Average (grand-avg) (known) Tag
VI
23.0

21.0
25.0 2.00
0.473
23.00
-0.18
-0.69

W
22.0

24.0
23.0 1.00
0.236
23.00
-0.18
-0.69

WG
20.0

19.0
21.0 1.00
0.236
20.00
-1.22
-1.73

vwr.










•
WJ










• %
wo










•
WR
28.0

30.0
31.0 1.53
0.354
29.67
2.13
1.62

WS










• .
X
22.0

20.0
21.0 1.00
0.236
21.00
-0.87
-1.39





Data sorted by Laboratory Averaf
fe



Average

Tap

Lab
Average
Tag
Lab
Average

Tag
Lab
12.00

u

LT
23.00

VI
25.00


KH
13.00



SL
23.00

QW
25.00


E
13.00

u

RF
23.00

LE
25.00


D
14.00

u

HP
23.00

GQ
25.00


CJ
15.00

4

NO
23.00

FE
25.00


BB
16.67



SI
23.00

DT
25.33


TQ
19.67



EB
23.00

BH
25.33


TD
20.00



WG
23.00

AF
25.33


AU
20.67



OA
23.33

JS
25.67


PB
20.67



BG
23.33

J hi
25.67


KL
21.00



X
23.33

BM
26.00


UE
21.00



BO
23.33

BA
26.00


DZ
21.33



R
23.33

AK
26.00


DE
21.67



S
23.67

T
26.00


AW
22.00



CO
24.00

SZ
26.33


SS
22.00



AL
24.00

QU
26.33


SM
22.33



SC
24.00

QM
26.33


AZ
22.33



LF
24.00

L
26.67


CE
22.33



K
24.00

CX
27.00


SD
22.33



JY
24.00

CA
27.00


CS
22.33



DO
24.00

BL
28.00


I
22.67



N
24.33

UP
29.33


PV
22.67



HK
24.33

QZ
29.67


WR
22.67



EL
24.33

Q
30.00


VA
22.67



BC
24.67

RR
32.67


CG
22.67



AJ
24.67

C
34.67

ft
NT
22.67



AE
24.67

A
169.33

X
NJ
23.00



W
25.00

M
180.33

X
DD
• s No data submitted	TAG SYMBOLS	ft = Above control limit
0 = Insufficient data	x = Determined to be an outlier	¦£! s Below control limit

-------
fr
ESD-LV Performance Evaluation: Strontium in Water, 17-Jan-1997 12 / 12
Strontium-90
% responding labs	Frequency distribution
10-
¦HUB
lutmi
o ¦	.	^	j —— ¦ | ¦ ,
-6	-4	-2	0+2+4
Normalized deviation of the mean from the known value
% responding labs	Frequency distribution
2qt		"
10-
¦¦llft.llT- - T-
-«	1	f ¦ If ¦ , *rn\	.	¦ ^
-6	-4	-2	0+2+4
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-97/042
April 1997
c
Gross Alpha-Beta in
Water Performance
Evaluation Study
A Statistical Evaluation of
the January 31, 1997 Data
0Q2RSL87.CQV

-------
Gross Alpha-Beta in Water
Performance Evaluation Study
January 31, 1997
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 Chemistry Branch (ESD-LV)
Performance Evaluation Study for Gross Alpha-Beta in Water; January 31, 1997.
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, _
A a : L )
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, 31-Jan-1997 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.

-------
6
2/16 ESD-LV Performance Evaluation: Gross Alpha-Beta In Water, 31-Jail-1997
The Range Analysis(R + SR) ia calculated from the range, mean range and standard error of
the range valueB. 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 2.675(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, 31-Jan-1997 3/16
Gross Alpha	Statistical Summary	183 Participants
The known value of this nuclide is 5.2 pCi/1 with an expected precision of 5.0; the control limits
are 0.0 to 13.9; the warning regions are 0.0 to 0.0 and 11.0 to 13.9
22(12.0 %) Failed to respond
; 154(84.2 %) Within all limits
•	W
•	N1V
•
* V
* TV
9
2(1.1 %) Outliers ' xhv
r
Statistic
* *3.
i i
Respondents
*» 5(2.7 %) In warning zone
but within control
Non-outliers
Mean
6.14
Grand Avg 6.02
Std. Dev.
2.20
1.92
Variance
4.85
3.68
% Coef. ofVar.
35.84
31.86
% deviation of mean from known value
18.12
15.79
Norm. dev. of mean from known value
0.43
0.43
Median
5.67
5.67
% deviation of median from known value
8.97
8.97
Norm. dev. of median from known value
0.21
0.24
2(1.2 %) More> than 3 norm. S.D.
5(3.1 %) Between 2 and 3 norm. S.D. *
, 137(85.1 %) Within 1 norm. S.D.
of known value •
17(10.6%) Between 1 and 2 norm. S.D

-------
r 		—		 ==i\
4/16 E8D-LV Performance Evaluation: Gross Alpha-Beta in Water, 31-Jan-1997
Gross Alpha






\
Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
A
5.0
4.7
4.4
0.30
0.071
4.70
-0.46
-0.17
AE
8.2
8.8.
8.0
0.42
0.095
8.33
0.80
1.09
AF
5.5
4.4
3.0
1.25
0.295
4.30
-0.60
-0.31
AH
4.4
3.5
3.4
0.55
0.118
3.77
-0.78
-0.50
AJ
3.9
2.7
2.3
0.83
0.189
2.97
-1.06
-0.77
AK
6.7
6.2
5.6
0.55
0.130
6.17
0.05
0.33
AL
7.6
7.1
7.7
0.32
0.071
7.47
0.50
0.79
AP
6.8
6.0
6.0
0.46
0.095
6.27
0.09
0.37
AR
7.2
6.1
5.9
0.70
0.154
6.40
0.13
0.42
AU
2.7
2.7
2.9
0.12
0.024
2.77
-1.13
-0.84
AW
5.5
5.3
4.8
0.36
0.083
5.20
-0.28
0.00
AZ
7.5
7.8
7.2
0.30
0.071
7.50
0.51
0.80
BA
4.3
4.9
4.9
0.35
0.071
4.70
-0.46
-0.17
BB
4.3
4.1
4.2
0.10
0.024
4.20
-0.63
-0.35
BC
11.6
11.6
13.0
0.81
0.165
12.07
2.09
2.38
BG
5.0
3.0
6.0
1.53
0.354
4.67
-0.47
-0.18
BH
5.4
4.8
5.2
0.31
0.071
5.13
-0.31
-0.02
BK
5.9
5.5
5.6
0.21
0.047
5.67
-0.12
0.16
BL
¦ 1834'"
13.0|
4&3>
*04
0224
14.10
2.80
3.08 x
BM
4.8
5.3
4.5
0.40
0.095
4.87
-0.40
-0.12
BN
3.0
4.0
3.0
0.58
0.118
3.33
-0.93
-0.65
BO
/'8
6.0
4.0
1.01
0.236
4.93
-0.38
-0.09
BS
5.2
7.5
7.1
1.23
0.272
6.60
0.20
0.48
C
6.6
7.2
7.0
0.31
0.071
6.93
0.32
0.60
CA
11.4
8.7
9.8
1.36
0.319
9.97
1.37
1.65
cc
4.5
5.0
4.7
0.25
0.059
4.73
-0.45
-0.16
CE
5.7
3.1
4.5
1.30
.0.307
4.43
-0.55
-0.27
CG
5.0
5.8
4.8
0.53
0.118 "
5.20
-0.28
0.00
CJ
7.1
8.8
8.4
0.89
0.201
8.10
0.72
1.00
CO
5.3
5.4
6.8
0.26
0.059
5.50
-0.18
0.10
CP
3.2
4.5
5.4
1.11
0.260
4.37
-0.57
-0.29
cs
4.2
5.0
7.3
1.61
0.366
5.50
-0.18
0.10
cx
3.6
3.5
4.6
0.61
0.130
3.90
-0.73
-0.45
D
6.0
6.2
5.4
0.42
0.095
5.87
-0.05
0.23
DB
7.3
7.1
6.8
0.25
0.059
7.07
0.36
0.65
DD
6.3
8.3
6.3
1.15
0.236
6.97
0.33
0.61
OE
6.3
6.4
6.5
0.10
0.024
6.40
0.13
0.42
DH
5.0
4.5
5.3
0.40
0.095
4.93
-0.38
-0.09
DO
7.8
7.8
7.1
0.40
0.083
7.57
0.54
0.82
DR

li.e!





0i,;.
""DS";






^ 'h'
I>T
6.8
7.9
6.5
0.74
0.165
7.07
0.36
0.65
DZ
6.7
5.9
7.2
0.66
0.154
6.60
0.20
0.48
E
5.0
5.8
5.7
0.44
0.095
5.50
-0.18
0.10
EB
7.8
7.1
6.8
0.51
0.118
7.23
0.42
0.70
* 5
No data submitted

TAG SYMBOLS

1} s Above control limit
0 a
	
Insufficient data
x =
Determined to be an outlier
11 = Below control limit J
				4?

-------
ESD-LV Performance Evaluation: Gross Alpha-Beta in Water, 31-Jan-1997 5/16
=^N
Gross Alpha
Lab Res. 1
Exper. Rng anal	Normalized deviation
Res. 2 Res. 3 Sigma (R + SR) Average (grand-avg) (known) Tag

4.9
3.9
3.9
0.58
0.118
4.23
-0.62
-0.33
EO
7.0
6.0
5.0
1.00
0.236
6.00
-0.01
0.28
ER
4.7
4.4
4.7
0.17
0.035
4.60
-0.49
-0.21
EV
4.6
4.8
6.8
1.22
0.260
5.40
-0.22
0.07
7ew








EX
5.5
5.2
5.3
0.15
0.035
5.33
-0.24
0.05
FE
4.9
5.1
5.2
0.15
0.035
5.07
-0.33
-0.05
FF
6.1
5.4
5.8
0.35
0.083
5.77
-0.09
0.20
FJ?*








FL
7.2
6.9
6.7
0.25
0.059
6.93
0.32
0.60
FN
4.0
3.0
3.0
0.58
0.118
3.33
-0.93
-0.65
GQ
6.3
6.0
6.1
0.15
0.035
6.13
0.04
0.32
GT
6.9
6.5
4.8
1.12
0.248
6.07
0.02
0.30









HI
6.3
6.3
4.4
1.10
0.224
5.67
-0.12
0.16
HK
8.6
7.7
9.1
0.71
0.165
8.47
0.85
1.13
HL
6.4
5.2
5.0
0.76
0.165
5.53
-0.17
0.12
HP
4.2
4.4
4.1
0.15
0.035
4.23
-0.62
-0.33
I
7.1
7.6
8.5
0.71
0.165
7.73
0.59
0.88
ED
:IU;
8.8
6.8
10.6
1.90
0.449
8.73
0.94
1.22
ia*:l
JG
4.4
4.5
5.6
0.67
0.142
4.83
-0.41
-0.13
JM
4.7
5.0
4.1
0.46
0.106
4.60
-0.49
-0.21
JN
4.8
4.8
4.8
0.00
0.000
4.80
-0.42
-0.14
JP
4.9
4.0
5.1
0.59
0.130
4.67
-0.47
-0.18
JQ
5.7
6.6
6.5
0.49
0.106
6.27
0.09
0.37
JS
5.2
5.6
6.3
0.56
0.130
5.70
-0.11
0.17
JY
5.7
6.9
6.3
0.60
0.142
6.30
0.10
0.38
K
6.6
7.4
7.2
0.42
0.095
7.07
0.36
0.65
KE
6.7
6.7
6.5
0.12
0.024
6.63
0.21
0.50
KH
5.0
4.8
5.3
0.25
0.059
5.03
-0.34
-0.06
KT
9.0
8.7
8.3
0.35
0.083
8.67
0.92
1.20
KX
8.0
8.0
8.0
0.00
0.000
8.00
0.69
0.97
L
7.9
9.3
8.6
0.70
0.165
8.60
0.89
1.18
LE
5.5
6.8
4.5
1.15
0.272
5.60
-0.15
0.14
LF
4.1
5.4
7.2
1.56
0.366
5.57
-0.16
0.13
LL
14.3
19.3
7.6
5.87
1.728
13.73
2.67
2.96
LR
3.9
3.1
4.4
0.66
0.154
3.80
-0.77
-0.48
LT
2.9
4.3
3.6
0.70
0.165
3.60
-0.84
-0.55
M
9.2
9.3
8.1
0.67
0.142
8.87
0.99
1.27
MF
4.4
4.5
4.5
0.06
0.012
4.47
-0.54
-0.25
MV
4.4
6.0
8.3
1.96
0.461
6.23
0.07
0.36
§acm.
. ~ S -<-Y4<








N
7.0
6.6
6.8
0.20
0.047
6.80
0.27
0.55
' :


5&:
• = No data submitted
0 = Insufficient data
TAG SYMBOLS
x = Determined to be an outlier
1T = Above control limit
II s Below control limit

-------
—	








	
6/16 ESD-LV Performance Evaluation: Gross Alpha-Beta in Water, 31-Jan-1997

Gross Alpha








Lab
Res. 1


Exper.
Rng anal

Normalized deviation

Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
NA
J/J"***/*"-
10.0
10.0
10.0
0.00
0.000
10.00
1.38
1.66

NB
17.3:
WM
20.i
5'
0.602
17.47
3.96
4.26;

NJ
4.3
4.0
3.6
0.35
0.083
3.97
-0.71
-0.43

NK
5.5
6.2
4.5
0.85
0.201
5.40
-0.22
0.07

NO
8.0
9.0
10.0
1.00
0.236
9.00
1.03
1.32

NP
6.0
4.6
5.3
0.70
0.165
5.30
-0.25
0.03

NT
6.6
6.5
7.0
0.26
0.059
6.70
0.24
0.52

O
8.8
7.8
8.5
0.51
0.118
8.37
0.81
1.10

OA
3.5
2.8
6.6
2.02
0.449
4.30
-0.60
-0.31

OB
4.3
5.1
6.9
1.33
0.307
5.43
-0.20
0.08

OF
5.4
6.2
7.6
1.11
0.260
6.40
0.13
0.42

OS
8.0
6.0
7.0
1.00
0.236
7.00
0.34
0.62

'"-rzx
OT









OX









OY









P
9.5
10.4
15.1
3.01
0.662
11.67
1.96
2.24

PA
1.7
2.8
2.6
0.59
0.130
2.37
-1.27
-0.98

PB
5.5
5.7
5.9
0.20
0.047
5.70
-0.11
0.17

PG
8.3
6.1
5.6
1.44
0.319
6.67
0.22
0.51

PM
6.2
5.6
5.1
0.55
0.130
5.63
-0.13
0.15

5pq|









PR
12.1
10.9
12.1
0.69
0.142
11.70
1.97
2.25

PV
4.5
4.6
4.8
0.15
0.035
. 4.63
-0.48
-0.20

Q
4.9
5.4
6.8
0.98
0.224
5.70
-0.11
0.17

QM
5.2
4.0
4.2
0.64
0.142
4.47
-0.54
-0.25

QP
5.3
6.4
5.2
0.67
0.142
5.63
-0.13
0.15

QQ
6.4
5.1
5.8
0.65
0.154
5.77
-0.09
0.20

QT
6.5
4.8
5.0
0.93
0.201
5.43
-0.20
0.08

QU
7.8
7.4
7.3
0.26
0.059
7.50
0.51
0.80

QW
6.2
6.1
6.1
0.06
0.012
6.13
0.04
0.32

QX
6.1
6.2
5.9
0.15
0.035
6.07
0.02
0.30

QZ
4.0
5.0
4.8
0.53
0.118
4.60
-0.49
-0.21

R
7.1
5.6
6.7
0.78
0.177
6.47
0.15
0.44

RB
7.7
5.1
6.8
1.32
0.307
6.53
0.18
0.46

RD
5.4
5.4
5.6
0.12
0.024
5.47
-0.19
0.09

RF
4.1
4.5
4.8
0.35
0.083
4.47
-0.54
-0.25

RG
5.1
6.0
6.0
0.52
0.106
5.70
-0.11
0.17

RI
4.1
5.8
5.3
0.87
0.201
5.07
-0.33
-0.05

RK
4.4
4.2
4.0
0.20
0.047
4.20
-0.63
-0.35

RR
6.6
6.4
6.3
0.15
0.035
6.43
0.14
0.43

¦:'Wl









s
8.3
9.8
8.3
0.87
0.177
8.80
0.96
1.25

sc
3.5
7.4
4.2
2.08
0.461
5.03
-0.34
-0.06

SD
*6.0
6.0
6.0
0.00
0.000
6.00
-0.01
0.28

SF
13.0
13.0
13.0
0.00
0.000
13.00
2.42
2.70

• H
No data submitted

TAG SYMBOLS

tT s Above control limit
la-
Insufficient data
X s
Determined to be an outlier
= Below control limit
						—'J

-------
ESD-LV Performance Evaluation: Gross Alpha-Beta in Water, 31-Jan-1997 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
SG
5.6
14.0
6.2
4.69
0.992
8.60
0.89
1.18

SI
5.8
5.5
5.1
0.35
0.083
5.47
-0.19
0.09

SL
6.2
6.3
7.0
0.44
0.095
6.50
0.17
0.45

SM
5.5
43
4.7
0.61
0.142
4.83
-0.41
-0.13

SN
2.8
3.2
3.3
0.26
0.059
3.10
-1.01
-0.73

SO
6.4
6.1
4.8
0.85
0.189
5.77
-0.09
0.20

SR
9.7
7.1
7.0
1.53
0.319
7.93
0.66
0.95

ss
4.3
3.3
3.9
0.50
0.118
3.83
-0.76
-0.47

su
5.3
3.9
2.1
1.60
0.378
3.77
-0.78
-0.50

sv
11.3
11.2
9.8
0.84
0.177
10.77
1.64
1.93

SX
5.4
6.2
4.3
0.95
0.224
5.30
-0.25
0.03

SZ
4.3
5.3
4.5
0.53
0.118
4.70
-0.46
-0.17

T
4.1
3.3
5.6
' 1.17
0.272
4.33
-0.58
-0.30

TD
3.6
3.5
4.4
0.49
0.106
3.83
-0.76
¦°tL

TGH:


















" «









ft*' ; -
TN
3.1
5.0
4.7
1.02
0.224
4.27
-0.61
-0.32

TQ
3.5
5.3
4.8
0.93
0.213
4.53
-0.52
-0.23

TW
8.4
4.5
7.3
2.01
0.461
6.73
0.25
0.53

TY
4.6
4.4
4.3
0.15
0.035
4.43
-0.55
-0.27

U
8.2
8.1
8.9
0.44
0.095
8.40
0.82
1.11

UA
7.0
9.4
8.0
1.21
0.284
8.13
0.73
1.02

UE
5.2
6.3
5.3
0.61
0.130
5.60
-0.15
0.14

UP
5.1
6.1
6.4
0.68
0.154
5.87
-0.05
0.23

UQ
7.1
6.4
7.1
0.40
0.083
6.87
0.29
0.58

VA
5.5
5.0
4.0
0.76
0.177
4.83
-0.41
-0.13

VC








*
VH
7.8
6.5
6.1
0.89
0.201
6.80
0.27
0.55

VI
4.2
4.8
4.7
0.32
0.071
4.57
-0.50
-0.22

VJ
4.4
4.9
3.8
0.55
0.130
4.37
-0.57
-0.29

VO
6.7
4.9
3.1
1.80
0.425
4.90
-0.39
-O.iO











w
4.9
5.2
6.3
0.74
0.165
5.47
-0.19
0.09

WE
6.5
7.0
6.9
0.26
0.059
6.80
0.27
0.55

WH
5.8
7.4
8.2
1.22
0.284
7.13
0.39
0.67

WJ
6.2
5.6
4.8
0.70
0.165
5.53
-0.17
0.12

WN
6.5
6.8
6.4
0.21
0.047
6.57
0.19
0.47

WO
8.7
7.5
8.9
0.76
0.165
8.37
0.81
1.10

WP
4.1
4.0
3.9
0.10
0.024
4.00
-0.70
-0.42

¦1 XVJtC-'"








+ ¦









'
iii








-------
8/16 ESD-LV Performance Evaluation: Gross Alpha-Beta in Water, 31-Jan-1997
Gross Alpha
Lab Res. 1
Exper. Rng anal	Normalized deviation
Res. 2	Rea. 3 Sigma (R + SR) Average (grand-avg) (known) Tag
X
xc
6.3
6.0
5.4	6.5 0.59 0.130	6.07
6.3	5.2 0.57 0.130	5.83

Data sorted by Laboratory Average
0.02
-0.07
0 30
0.22

Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
2.37

PA
4.70

SZ
5.63

PM
2.77

AU
4.70

BA
5.67

HI
2.97

AJ
4.70

A
5.67

BK
3.10

SN
4.73

,CC
5.70

RG
3.33

FN
4.80

JN
5.70

Q
3.33

BN
4.83

VA
5.70

PB
3.60

LT
4.83

SM
5.70

JS«
3.77

SU
4.83

JG
5.77

SO
3.77

AH
4.87

BM
5.77

QQ
3.80

LR
4.90

WW
5.77

FF
3.83

TD
4.90

VO
5.83

XC
3.83

SS
4.93

DH
5.87

UP
3.90

cx
4.93

BO
5.87

D
3,97

NJ
5.03

sc
6.00

SD
4.00

WP
5.03

KH
6.00

EO
4.07

wx
5.07

FE
6.07

X
4.20

RK
5.07

RI
6.07

QX
4.20

BB
5.13

BH
6.07

GT
4.23

HP
5.20

CG
6.13

QW
4.23

EL
6.20

AW
6.13

GQ
4.27

TN
5.30

SX
6.17

AK
4.30

OA
5.30

NP
6.23

MV
4.30

AF
5.33

EX
6.27

JQ
4.33

T
5.40

NK
6.27

AP
4.37

VJ
5.40

EV
6.30

JY
4.37

CP
5.43

QT
6.40

OF
4.43

TY
5.43

OB
6.40

DE
4.43

CE
5.47

W
6.40

AR
4.47

RF
5.47

SI
6.43

RR
4.47

QM
5.47

RD
6.47

R
4.47

MF
5.50

E
6.50

SL
4.53

TQ
5.50

cs
6.53

RB
4.57

VI
6.50

CO
6.57

WN
4.60

QZ
5.53

WJ
6.60

DZ
4.60

JM
5.63

HL
6.60

BS
4.60

EH
5.57

LF
6.63

KE
4.63

PV
5.60

UE
6.67

PG
4.67

JP
5.60

le
6.70

NT
4.67

BG
5.63

QP
6.73

TW
• s No data submitted
0 = Insufficient data

TAG SYMBOLS
x = Determined to be an outlier
. tr
a
s Above control limit
s Below control limit

-------
ESD-LV Performance Evaluation: Gross Alpha-Beta in Water, 31-Jan-1997 9/16
Gross Alpha
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
6.80

WE
7.50

QU
8.67

KT
6.80

VH
7.50

AZ
8.73

ID
6.80

N
7.57

DO
8.80

S
6.87

UQ
7.73

I
8.87

M
6.93

FL
7.93

SR
9.00

NO
6.93

C
8.00

KX
9.97

CA
6.97

DD
8.10

CJ
10.00

NA
7.00

OS
8.13

UA
10.77

SV
7.07

K
8.33

AE
11.67

P
7.07

DT
8.37

WO
11.70

PR
7.07

DB
8.37

O
12.07

BC
7.13

WH
8.40

U
13.00

SF
7.23

EB
8.47

HK
13.73

LL
7.47

AL
8.60

SG
14.10
X
BL



8.60

L
17.47
X
NB
% responding labs
Frequency distribution
% responding labs
+2	+4
Normalized deviation of the mean from the known value
Frequency distribution
-4	-2	0	+2	+4
Normalized deviation of the mean from the grand average
• s No data submitted	TAG SYMBOLS	ft s Above control limit
0 s Insufficient data	x s Determined to be an outlier	U s Below control limit
V*			
-------
=*\
ESD-LV Performance Evaluation: Gross Alpha-Beta in Wateir, 31-Jan-1997 10 / 16
Gross Beta	Statistical Summary	183 Participants
The known value of this nuclide is 14.7 pCi/1 with an expected precision of 5.0; the control limits
are 6.0 to 23.4; the warning regions are 6.0 to 8.9 and 20.5 to 23.4
21 (11.5 %) Failed to respond
145(79.2 %) Within all limits
•	\K
•	n\
•	\!
* Pv.
13(7.1 %) Outliers *'
I
Statistic
I
Respondents
4(2.2 %) In warning zone
but within control
Non-outliers
Mean
17.22
Grand Avg 15.66
Std. Dev.
11.42
2.13
Variance
130.32
4.53
% Coef. of Var.
66.30
13.59
% deviation of mean from known value
17.14
6.50
Norm. dev. of mean from known value
0.22
0.45
Median
15.78
15.67
% deviation of median from known value
7.37
6.58
Norm. dev. of median from known value
0.09
0.45
13(8.0 %) More than 3 norm. S.D
4(2.5 %) Between 2 and 3 norm. S.D. *
. 114(70.4 %) Within 1 norm. S.D.
of known value
* 31(19.1 %) Between 1 and 2 norm. S.D.
-------
			—	
11/16 ESD-LV Performance Evaluation: Gross Alpha-Beta in Water, 31-Jan-1997
Gross Beta







Lab
Res. 1


Exper.
Rng anal

Normalized deviation
Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
A
13.7
13.8
13.7
0.06
0.012
13.73
-0.67
-0.33
AE
16.1
15.5
15.8
0.30
0.071
15.80
0.05
0.38
AF
14.4
14.0
14.8
0.40
0.095
14.40
-0.43
-0.10
AH
15.5
16.8
16.3
0.66
0.154
16.20
0.19
0.52
AJ
14.4
14.4
14.7
0.17
0.035
14.50
-0.40
-0.07
AK
14.6
16.2
16.4
0.99
0.213
15.73
0.03
0.36
AL
14.8
15.4
16.0
0.60
0.142
15.40
-0.09
0.24
AP
14.9
14.1
14.0
0.49
0.106
14.33
-0.46
-0.13
AR
18.0
17.8
18.3
0.25
0.059
18.03
0.82
1.15
AU
13.3
16.3
14.6
1.50
0.354
14.73
-0.32
0.01
AW
16.5
17.5
18.3
0.90
0.213
17.43
0.62
0.95
AZ
12.1
15.6
16.2
2.21
0.484
14.63
-0.35
-0.02
BA
12.7
14.5
14.8
1.14
0.248
14.00
-0.57
-0.24
BB
23.3
19.1
21.2
2.10
0.496
21.20
1.92
2.25
BC
10.9
13.4
14.3
1.76
0.402
12.87
-0.97
-0.64
BG
15.0
15.0
17.0
1.15
0.236
15.67
0.00
0.33
BH
14.8
15.9
15.9
0.64
0.130
15.53
-0.04
0.29
BK
16.7
16.7
17.8
0.64
0.130
17.07
0.49
0.82
BL
15.3
16.4
17.9
1.31
0.307
16.53
0.30
0.64
BM
15.1
16.6
14.6
1.04
0.236
15.43
-0.08
0.25
BN
15.0
13.0
15.0
1.15
0.236
14.33
-0.46
-0.13
BO
15.5
12.8
15.1
1.46
0.319
14.47
-0.41
-0.08
BS
14.3
16.6
14.7
1.23
0.272
15.20
-0.16
0.17
C
17.3
16.6
17.6
0.51
0.118
17.17
0.52
0.85
CA
16.4
17.4
13.5
2.03
0.461
15.77
0.04
0.37
CC
31;0
32.4
3125
0^84
0.177
31.97
5.65
6.S8 x
CE
13.5
14.5
13.7
0.53
0.118
13.90
-0.61
-0.28
CG
15.9
10.9
12.6
2.54
0.591
13.13
-0.87
-0.54
CJ
15.0
14.0
16.0
1.00
0.236
15.00
-0.23
0.10
CO
* 5.8
6.0

0.64
-
Insufficient data
x =
Determined to be an outlier
11 = Below control limit J
					-V
-------
ESD-LV Performance Evaluation: Gross Alpha-Beta in Water, 31-Jan-1997 12 / 16
Gross Beta
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
\
Normalized deviation
(grand-avg) (known) Tag
EL
14.0
13.9
12.9
0.61
0.130
13.60
-0,71
-0.38
EO
20.0
19.0
14.0
3.21
0.709
17.67
0.70
103









EV "
20.5
16.8
15.9
2.44
0.543
17.73
0.72
1.05
EW
16.1
15.8
13.6
1.37
0.295
15.17
-0.17
0.16
EX
11.0
12.8
15.4
2.21
0.520
13.07
-0.90
-0.57
FE
14.3
14.3
14.3
0.00
0.000
14.30
-0.47
-0.14
FF
15.7
15.7
16.0
0.17
0.035
15.80
0.05
0.38
IfJt








Wi
I46.fr-
W&3
"'169^:
7.331
2.200
item

;48i5f
FN
16.0
14.0
15.0
1.00
0.236
15.00
-0.23
0.10
GQ
17.4
14.4
16.0
1.50
0.354
15.93
0.10
0.43
GT
20.2
17.6
13.4
3.43
0.803
17.07
0.49
0.82 _
JcSf








|ra!
H®


2.42
%532
30^53
WIS
5;48 StSr
HK
18.6
17.5
17.2
0.74
0.165
17.77
0.73
1.06
HL
14.0
15.4
15.2
0.76
0.165
14.87
-0.27
0.06
HP
16.9
14.7
23.4
4.52
1.053
18.33
0.93
1.26
I
16.5
16.4
15.7
0.44
0.095
16.20
0.19
0.52
ID
17.2
15.9
15.2
1.01
0.236
16.10
0.15
0.48
IU
16.0
14.0
15.0
1.00
0.236
15.00
-0.23
0.10
JG
15.0
15.4
15.9
0.45
0.106
15.43
-0.08
0.25
JM
15.7
16.2
14.5
0.87
0.201
15.47
-0.07
0.27
JN
14.2
14.9
14.3
0.38
0.083
14.47
-0.41
-0.08
JP
14.6
13.9
15.5
0.80
0.189
14.67
-0.34
-0.01
JQ
19.9
17.0
13.5
3.20
0.756
16.80
0.40
0.73
JS
13.4
15.5
16.5
1.58
0.366
15.13
-0.18
0.15
JY
18.2
18.9
16.6
1.18
0.272
17.90
0.78
1.11
K
17.9
16.6
16.4
0.81
0.177
16.97
0.45
0.79
KE
13.8
13.4
12.9
0.45
0.106
13.37
-0.79
-0.46
KH
15.3
13.9
15.8
0.98
0.224
15.00
-0.23
0.10
KT
10.1
8.1
9.5
1.03
0.236
9.23
-2.22
-1.89
KX
16.0
16.0
13.0
1.73
0.354
15.00
-0.23
0.10
L
12.8
13.9
12.1
0.91
0.213
12.93
-0.94
-0.61
LE
13.6
20.2
19.7
3.67
0.780
17.83
0.75
1.09
LF
17.0
22.0
16.0
3.21
0.709
18.33
0.93
1.26
LL
18.9
22.9
15.0
3.95
0.933
18.93
1.14
1.47
LR
16.4
18.7
18.8
1.36
0.284
17.97
0.80
1.13
LT
15.4
15.5
16.3
0.49
0.106
15.73
0.03
0.36
M
20.0
16.0
17.0
2.08
0.473
17.67
0.70
1.03
MF
15.5
16.0
16.2
0.36
0.083
15.90
0.08
0.42
MV
12.1
14.0
15.3
1.61
" 0.378
13.80
-0.64
-0.31









N
12.9
12.6
12.7
0.15
0.035
12.73
-1.01
-0.68
• s No data submitted
0 = Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
ft = Above
U = Below
control limit
control limit
-------
13 / W ESD-LV Performance Evaluation: Grose Alpha-Beta in Water, 31-Jan-I99?
Gross Beta
Lab Rea. 1
Rea. 2
Res. 3
Exper.
Sigma
Rug anal
(R + SR)
Average
*
Normalized deviation
(grand-avg) (known.) Tag
[vNA*
-250;
" 26,0 "
MM
JO.6O
0.000
25.00
3.24
3.57' x
• NB.
; .. 26.3

29&
2.36
0.556
28.70
4.52
4.85 x
NJ
16.7
14.3
14.7
1.29
0.284
15.23
-0.15
0.18
NK
15.6
17.2
140
1.60
0.378
15.60
-0.02
0.31
NO
13-0
16.0
19.0
3.00
0.709
16.00
0.12
0.45
NP
16.6
18.6
16.9
1.08
0.236
17.37
0.59
0.92
NT
15.5
17.2
15.4
1.01
0.213
16.03
0.13
0.46
O
16.3
16.9
15.9
0.50
0.118
16.37
0.25
0.58
OA
20.1
18.4
24.0
2.B7
0.662
20.83
1.79
2.12
OB
16.6
18.6
17.5
1.00
0.236
17.57
0.66
0.99
OF
14.1
14.1
12.5
0.92
0.189
13.57
-0.72
-0.39
OS
22:0
25.0.
"28,6
3.00
0.709
25.00
3.24
3.57 ' ' x '
OT
17.5
15.9
16.5
0.81
0.189
16.63
0.34
0.67
ox







• - •
OY








P
18.9
13.6
18.7
3.00
0.626
17.07
0.49
0^82
PA
13.9
14.5
12.4
1.08
0.248
13.60
-0.71
-0.38
PB
15.4
15.2
15.6
0.20
0.047
15.40
-0.09
0.24
PG
18.6
15.6
15.9
1.69
0.366
16.67
0.35
0.68
PM
14.5
14.0
12.4
1.10
0.248
13.63
-0.70
-0.37
PQ







• -
PR
15.7
14.8
15.2
0.45
0.106
15 23
-0.15
0.18
PV
13.9
18.2
11.4
3.44
0.803
14.50
-0.40
-0.07
Q
23.0
24.8
155$
1:10
0.236
24.27
2,98
&31 x
QM
13.0
31.9
11.0
1.00
0.236
11.97
-1.28
-0.95
QP
17.9
17.9
19.4
0.87
0.177
18.40
0.95
1.28
QQ
18.4
18.2
18.1
0.15
0.035
18.23
0.89
1.22
QT
17.9
19.4
17.6
0.96
0.213
18.30
092
1.25
QU
14.8
13.1
11.5
1.65
0.390
13.13
-0.87
-0.54
QW
13.3
15.6
14.2
116
0.272
14.37
-0.45
-0.12
QX
17.8
17.8
17.9
0.06
0.012
17.83
0.75
1.09
QZ
16.8
17.1
18.3
0.79
0.177
17.40
0.60
0.94
B
19.4
16.7
17.6
1.37
0.319
17.90
0.78
1.11
RB
15.0
16.0
15.0
0.58
0.118
15.33
-0.11
0.22
BD
15.4
15.5
16.1
0-3B
0.083
15.67
0.00
0.33
RF
17.3
16.1
17.5
0.76
a.165
16.97
0.45
0.79
RG
17.1
16.8
18.2
0.74
0.165
17.37
0.59
0.92
RI
14.0
14.2
17.8
2.14
0.449
15.33
-0.11
0.22
RK
19.9
17.4
17.4
1.44
0.295
18.23
0.89
1.22
RR
13.0
14.0
13.0
0.58
0.118
13.33
-0.80
-0.47
RZ








S
16.0
16.2
15.3
0.47
0.106
15,83
0.06
0.39
sc
14.9
17.4
17.2
1.39
0.295
16.50
0.29
0.62
SD
13.1
12.4
13.6
0.60
0.142
13.03
-0.91
-0.58
SF •
- i& 4i.
29;0 :

6.43
1.795
26,33;
sTto ^
/4.03. . x
• 5
1 0 s
	
No data submitted
Insufficient data
X s
TAG SYMBOLS
Determined to be an outlier
ft = Above control limit
4 s Below control limit
-------
ESD-LV Performance Evaluation: Gross Alpha-Beta in Water, 31-Jan-1997 14/16
Gross Beta
Lab
Res. 1


Exper.
Rng anal

Normalized deviation

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

'1M§
	2BA
4,59
1I120
27.33
4.05 '
4.38
¦H'V.
SI
14.5
13.6
13.8
0.47
0.106
13.97
-0.59
-0.25

SL
18.5
18.7
18.2
0.25
0.059
18.47
0.97
1.30

SM
13.9
13.4
15.4
1.04
0.236
14.23
-0.49
-0.16

SN
13.0
14.0
15.0
1.00
0.236
14.00
-0.57
-0.24

SO
17.2
16.9
16.3
0.46
0.106
16.80
0.40
0.73

SR
23.7
17.4
14.7
4.62
1.120
18.60
1.02
1.35

SS
14.0
13.7
13.6
0.21
0.047
13.77
-0.65
-0.32

SU
13.2
14.9
14.9
0.98
0.201
14.33
-0.46
-0.13

sv
19.2
17.5
18.0
0.87
0.201
18.23
0.89
1.22

SX
18.6
16.4
17.6
1.10
0.260
17.53
0.65
0.98

sz
13.7
14.6
15.0
0.67
0.154
14.43
-0.42
-0.09

T
18.1
13.4
13.6
2.66
0.555
15.03
-0.22
0.12

TD
11.1
12.6
15.1
2.02
0.473
12.93
-0.94
-0.61











TH



















TN
13.3
17.2
18.1
2.55
0.567
16.20
0.19
0.52

TQ
14.2
14.7
15.4
0.60
0.142
14.77
-0.31
0.02

TW
12.1
15.8
11.9
2.20
0.461
13.27
-0.83
-0.50

TY
16.7
17.3
17.9
0.60
0.142
17.30
0.57
0.90

U
16.2
16.1
16.2
0.06
0.012
16.17
0.18
0.51

UA
8.0
7.8
8.0
0.12
0.024
7.93
-2.68
-2.34

UE
16.7
17.5
17.4
0.44
0.095
17.20
0.53
0.87

UP
21.1
17.2
20.8
2.17
0.461
19.70
1.40
1.73

UQ
17.7
17.0
18.2
0.60
0.142
17.63
0.69
1.02

VA
15.1
16.3
15.0
0.72
0.154
15.47
-0.07
0.27

jVC;.








'*¦
VH
15.9
14.6
15.8
0.72
0.154
15.43
-0.08
0.25

VI
8.7
8.3
8.1
0.31
0.071
8.37
-2.52
-2.19

VJ
15.4
15.5
15.8
0.21
0.047
15.57
-0.03
0.30

VO
17.7
17.8
16.9
0.49
0.106
17.47
0.63
0.96











w
15.7
16.1
16.6
0.45
0.106
16.13
0.17
0.50

WE
14.5
14.9
15.5
0.50
0.118
14.97
-0.24
0.09

WH
11.3
11.2
10.9
0.21
0.047
11.13
-1.57
-1.24

WJ
18.5
18.3
18.4
0.10
0.024
18.40
0.95
1.28

'mm









WO
22.3
17.0
18.1
2.80
0.626
19.13
1.20
1.54

WE
16:83


l;6l
#366
2700
wwW!}g!
3196!
430
w?
*



fasmstM,'}




Ml










$m








?9'"
WW
19.5
16.2
17.3
1.68
0.390
17.67
0.70
1.03

wx
16.8
14.9
15.8
0.95
0.224
15.83
0.06
0.39

• s No data submitted TAG SYMBOLS fl ¦ Above control limi<
L_0_^ Insufficient data	x = Determined to be an outlier	^ g Below control limr
-------
15/16 ESD-LV Performance Evaluation: Gross Alpha-Beta in Water, 31-Jan-1997
Grose Beta
Lab Rea. 1
X
XB
XC
Exper. Rag anal	Normalized deviation
Res. 2 Rea. 3 Sigma (R + SR) Average (grand-avg) (known) Tag
21.6
~29l8:
17.6
19.8
2.00
0.473
19.67
1.39
1.72
• 24.9	Q.744 : 26.07 . 3.61 ; &94 x
Data sorted by Laboratory Average
Average
Tafi ,
Lab
Average
Tag
Lab
Average
Tap
Lab
5.53
X
CO
14.43

SZ
15.73

LT
7.93

UA
14.47

JN
15.73

AK
8.37

VI
14.47

BO
15.77

CA
9.23

KT
14,50

FV
15.80

FF
11.13

WB
14.50

AJ
15.80

AE
11.50

»D
14,63

AZ
15.83

WX
11.97

QM
1467

JP
15.83

S
12.23

CS
14.73

AU
15.90

MF
12.73

N
14.77

TQ
15.93

GQ
12.81

BC
14.87

HL
15.97

EB
12.93

L
14.93

DH
16.00

NO
12.93

TD
L4.97

WE
16.03

NT
13.03

SD
15.00

KX
16.10

ID
13.07

EX
15.00

KH
16.13

W
13.13

QU
15.00

IU
16.17

U
13.13

CG
15.00

FN
16.20

I
13.23

DZ
15.00

CJ
16.20

AH
13.27

TW
15.03

T
16.20

TN
13.33

RR
15.13

JS
16.37

O
13.37

KE
15.17

EW
16.40

D
13.57

OF
15.20

BS
16.50

sc
13.60

PA
15.23

PR
16.50

DT
13.60

EL
15.23

NJ
16.53

BL
13.60

DE
15.33

RI
16.63

OT
13.63

PM
16.33

RB
16.67

PG
13.73

A
15.40

PB
16.80

SO
13.77

as
15.40

AL
16.80

JQ
13-80

MV
15.43

VH
16.97

RF
13 90

CE
15.43

JG
1697

K
13.97

SI
15.43

BM
17.07

P
14.00

SN
16.47

VA
17.07

GT
14.00

BA
15.47

JM
17.07

BK
14.23

SM
15.50

&
17.17

C
14.30

FE
15.53

BH
17.20

UE
14.33

SU
15.57

VJ
17.30

TY
14.33

BN
35.60

NK
L7.37

RG
14.33

AP
15.67

RD
17.37

NP
14.37

QW
15.67

DO
17.40

QZ
14.40

AF
15.67

BG
17.43

AW
~ s No data submitted
^ 0 s Insufficient data
TAG SYMBOLS
x a Determined to be an outlier
ft = Above control limit
ii s Below control limit
-------
ESD-LV Performance Evaluation: Gross Alpha-Beta in Water, 31-Jan-1997 16 /16
Gross Beta
Data sorted by Laboratory Average
Average Tag
Lab
Average
Tag Lab
Average
Tag
Lab
17.47
VO
18.03
AR
19.70

UP
17.53
SX
18.23
SV
20.83

OA
17.57
OB
18.23
RK
21.20

BB
17.63
UQ
18.23
QQ
24.27
X
Q
17.63
DB
18.30
QT
25.00
X
OS
17.67
WW
18.30
CX
25.00
X
NA
17.67
M
18.33
LF
25.03
X
CP
17.67
EO
18.33
HP
26.07
X
xc
17.73
EV
18.40
WJ
26.33
X
SF
17.77
HK
18.40
QP
27.10
X
WP
17.83
QX
18.47
SL
27.33
X
SG
17.83
LE
18.60
SR
28.70
X
NB
17.90
R
18.93
LL
30.53
X
EQ
17.90
JY
19.13
WO
31.97
X
cc
17.97
LR
19.67
X
153.93
X
FL
% responding labs

Frequency distribution



10-
llllllllll-
0	+2
-M-
% responding labs
-2
Normalized deviation of the mean from the known value
Frequency distribution
+4
+6
10-
411
iilnh.
rB " T—
i " i	i—mT—
-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 s Above control limit
= Below control limit
-------
United States	Office of Research and
Environmental Protection Development
Agency	Washington, DC 20460
EPA/600/R-97/043
April 1997
&ERA Iodine in Water Performance
Evaluation Study
A Statistical Evaluation of
the February 7, 1997 Data
002RSL97.COV
-------
Iodine in Water
Performance Evaluation Study
February 7, 1997
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 7, 1997.
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, /J
i	(
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, 7-Feb-1997	1/7
The following pages consist of separate sections for each of the nuclides in this study with four j
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 defmition 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-coritrol
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, 7-Feb-1997
The Range Analysis® + SR) is calculated from the range, mean range and etandard 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 etandard 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 3fthe 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 ia 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 Watei% 7-Feb-1997
3/7
Iodine-131	Statistical Summary	105 Participants
The known value of this nuclide is 88.0 pCi/1 with an expected precision of 9.0; the control limits
are 70.4 to 101.6; the warning regions are 70.4 to 75.6 and 96.4 to 101.6
13(12.4 %) Failed to respond
; 81 (77.1 %) Within all limits
6(5.7 %) Outliers ' j \K


1 (1.0 %) Out of control •

4(3.8 %) In warning zone
but not an outlier
I
11
but within control
Statistic
Respondents
Non-outliers
Mean
87.94
Grand Avg 87.71
Std. Dev.
12.27
4.87
Variance
150.43
23.76
% Coef. of Var.
13.95
5.56
% deviation of mean from known value
2.26
1.99
Norm. dev. of mean from known value
0.16
0.35
Median
87.83
87.67
% deviation of median from known value
2.13
1.94
Norm. dev. of median from known value
0.15
0.34
7(7.6 %) More than 3 norm. S.D.
4(4.3 %) Between 2 and 3 norm. S.D. •
.62(67.4 %) Within 1 norm. S.D.
!	of known value
19(20.7 %) Between 1 and 2 norm. S.D.
-------
/,7-	
All

ESD-LV Performance Evaluation: Iodine
in Water,
7-Feb-1997

	^
Iodine-131







1
Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation

Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
A
88.0
86.0
90.0
2.00
0.263
88.00
0.06
0.38

AF
85.0
91.0
94.0
4.58
0.591
90.00
0.44
0.77

AJ
87.0
90.0
86.0
2.08
0.263
87.67
-0.01
0.32

AK
84.0
86.0
90.0
3.06
0.394
86.67
-0.20
0.13

AL
83.0
78.0
78.0
2.89
0.328
79.67
-1.55
-1.22

AP
106.0
95.0
87.0
9.54
1.470
96.00
1.59
1.92

AU
84.0
82.0
82.0
1.15
0.131
82.67
-0.97
-0.64

AW
90.0
90.0
91.0
0.58
0.066
90.33
0.50
0.83

AY
9,0
' 9.0
10.0
0.68
0066
9.33
-15.08
-14.75
X
AZ
89.0
90.0
90.0
0.58
0.066
89.67
0.38
0.71

BA
91.0
96.0
97.0
3.21
0.394
94.67
1.34
1.67

BC
92.0
93.0
94.0
1.00
0.131
93.00
1.02
1.35

BH
88.0
90.0
91.0
1.53
0.197
89.67
0.38
0.71

BK
90.0
88.0
92.0
2.00
0.263
90.00
0.44
0.77

BL
77.0
73.0
74.0
2.08
0.263
74.67
-2.51
-2.18

BM
87.0
89.0
88.0
1.00
0.131
88.00
0.06
0.38

BO
90.0
89.0
88.0
1.00
0.131
89.00
0.25
0.58

C
85.0
83.0
85.0
1.15
0.131
84.33
-0.65
-0.32

CA
88.0
84.0
86.0
2.00
0.263
86.00
-0.33
0.00

CC
78.0
79.0
81.0
1.53
0.197
79.33
-1.61
-1.28

CE
87.0
91.0
91.0
2.31
0.263
89.67
0.38
0.71

CtT
108.0
109.0
lQl.O
£36
0.525
106.00
3.52
3.85
x -
CP
92.0
95.0
96.0
2.08
0.263
94.33
1.27
1.60

CS
102.0
95.0
111.0
8.02
1.095
102.67
2.88
3.21
ft
CX
87.0
85.0
88.0
1.53
0.197
86.67
-0.20
0.13

D
87.0
87.0
92.0
2.89
0.328
88.67
0.18
0.51

DD
90.0
88.0
89.0
1.00
0.131
89.00
0.25
0.58

DE
80.0
81.0
81.0
0.58
0.066
80.67
-1.36
-1.03

DR
86.0
89.0
85.0
2.08
0.263
86.67
-0.20
0.13

DT
86.0
790
84.0
3.61
0.459
83.00
-0.91
-0.58

DY








*
E
87.0
86.0
87.0
0.58
0.066
86.67
-0.20
0.13

EB
87.0
88.0
88.0
0.58
0.066
87.67
-0.01
0.32

EH
89.0
84.0
99.0
7.64
0.984
90.67
0.57
0.90

EL
90.0
87.0
84.0
3.00
0.394
87.00
-0.14
0.19

EX
81.0
78.0
86.0
4.04
0.525
81.67
-1.16
-0.83

FE -
69.0
63.0
<3o;o
2.08
0.263
60.67
-5 M
-4.88
X
FL
90.0
90.0
89.0
0.58
0.066
89.67
0.38
0.71

GI
84.0
84.0
85.0
0.58
0.066
84.33
-0.65
-0.32

HE
88.0
93.0
87.0
3.21
0.394
89.33
0.31
0.64

HK
86.0
83.0
81.0
2.52
0.328
83.33
-0.84
-0.51

HP
95.0
89.0
.99.0
5.03
0.656
94.33
1.27
1.60

HX
86.0
85.0
85.0
0.58
0.066
85.33
-0.46
-0.13

I
86.0
90.0
89.0
2.08
0.263
88.33
0.12
0.45

IA








~
• = No data submitted

TAG SYMBOLS

ft = Above control limit
I 0 = Insufficient data
V-	
x =
Determined to be an outlier
U = Below control limit
	—y
-------
ESD-LV Performance Evaluation: Iodine in Water, 7-Feb-1997	5/7
Iodine-131
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
iu
84.0
85.0
83.0
1.00
0.131
84.00
-0.71
-0.38
• y •-
Jfcl s
JR








¦
JS
85.0
84.0
94.0
5.51
0.656
87.67
-0.01
0.32


i04;0?
12
-------
6/7
ESD-LV Performance Evaluation: Iodine in Water, 7-Feb-1997
lodine-131
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rag anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
TQ
V
81.0
84.0
86.0
2.52
0.326
83 67
-0.78
-0.45

vc








•
«
UE
86.0
86.0
90.0
2.31
0.263
87.33
-0.07
0.26

XJl








~ * .c
VP
87.0
910
86.0
2.65
0.328
88.00
0.06
0.38

VA
93.0
90.0
94.0
2.08
0.263
92.33
0.89
1.22

VC
89.0
89.0
93.0
2.31
0.263
90.33
0.50
0.83

VM
85.0
85.0
85.0
0.00
0.000
85.00
-0.52
-0.19

vn








9-
w
98.0
97.0
92.0
3.21
0.394
95.67
1.53
1.86

WM








•
WO
89.0
82.0
84.0
3.61
0.459
85.00
-0i52
-0.19

X
81.0
81.0
92.0
6.35
0.722
84.67
-0.59
-0.26

87.0
90.0
87.0
1.73
0.197
88.00
0.06
0.38
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
9.33
X
AY
85.33

KM
88.67

D
60.67
X
FE
85.33

HX
89.00

DD
74.67

BL
85.67

PW
89.00

BO
75.33

TA
86.00

M
89.33

MP
78.67

K
86.00

CA
89.33

HE
79.33

CC
86.67

SZ
89.67

FL
79.67

AL
86.67

MV
89.67

CE
80.00

TC
86.67

E
89.67

BH
80.67

DE
86.67

DR
89.67

AZ
81.00

QX
86.67

CX
90.00

BK
81.67

EX
86.67

AK
90.00

AF
82.33

PB
87.00

SV
90.33

VC
82.67

AU
87.00

L
90.33

KX
83.00

DT
87.00

EL
90.33

AW
83.33

HK
87.33

UE
90.67

EH
83.67

TQ
87.67

SS
91.00

PV
83.67

TD
87.67

JS
91.00

N
83.67

R
87.67

EB
91.67

OA
84.00

ru
87.67

AJ
91.67

NO
84.33

GI
88.00

Y
92.00

SD
84.33

C
88.00

UP
92.33

VA
84.67

X
88.00

SM
92.33

LF
84.67

s
88.00

QZ
93.00

BC
85.00

wo
88.00

Q
93.33

O
85.00

VM
88.00

BM
93.67

KL
85.00

8C
88.00

A
94.33

HP
85.00

RK
88.33

I
94.33

CP
«sNo data submitted
0 s Insufficient data

TAG SYMBOLS
x s Determined to be an outlier
ft
u
= Above control limit
= Below control limit
-------
ESD-LV Performance Evaluation: Iodine in Water, 7-Feb-1997
7/7
Iodine-131
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
94.67

BA
96.00

AP
106.00
X
CJ
95.67

W
96.67

OT
109.67
X
JY
95.67

OB
98.67

NJ
119.33
X
MN



102.67
ft
CS
142.33
X
QY
responding labs
Frequency distribution
lo-
ci-u*-r-
•6
> responding labs
JLfil lljlll
fw»T
„¦	¦ i
-4	-2	0	+2
Normalized deviation of the mean from the known value
Frequency distribution
+6
10-
0-"s-r
odUMI
¦6

m ¦
-4	-2	0	+2	+4
Normalized deviation of the mean from the grand average
+6
• s No data submitted
[0s Insufficient data
TAG SYMBOLS
x = Determined to be an outlier
1T s Above control limit
JJ- s Below control limi
-------
United States	Office of Research and	EPA/600/R-97/050
Environmental Protection	Development	April 1997
Agency	Washington, DC 20460
Uranium-Radium in
Water Performance
Evaluation Study
A Statistical Evaluation of
the February 14,1997 Data
023RSL96 C0VO21
-------
Uranium-Radium in Water
Performance Evaluation Study
February 14, 1997
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; February 14, 1997.
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, 14-Feb-1997 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 E8D-LV Performance Evaluation: Uranium-Radium in Water, 14-Feb-1997
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, 14-Feb-1997 3/20
Uranium (Natural)	Statistical Summary	151 Participants
The known value of this nuclide is 27.0 pCi/1 with an expected precision of 3.0; the control limits
are 21.8 to 32.2; the warning regions are 21.8 to 23.5 and 30.5 to 32.2
30(19.9 %) Failed to respond •»
• 93(61.6 %) Within all limits

14(9.3 %) Outliers •' /
	 A

4(2.6 %) Out ot control '

*"» 10(6.6 %) In warning zone
but not an outlier
^uti r
n i
but within control
Statistic
Respondents
Non-outliers
Mean
30.11
Grand Avg 26.18
Std. Dev.
34.02
2.21
Variance
1157.45
4.88
% Coef. of Var.
113.01
8.44
% deviation of mean from known value
11.50
-3.03
Norm. dev. of mean from known value
0.09
-0.37
Median
26.27
26.23
% deviation of median from known value
-2.72
-2.84
Norm. dev. of median from known value
-0.02
-0.35
20(16.5 %) More than 3 norm. S.D. ,
8(6.6 %) Between 2 and 3 norm. S.D
,63(52.1 %) Within 1 norm. S.D.
•	of known value
¦I-t	5 ''	v
• 30(24.8 %) Between 1 and 2 norm. S.D.
-------
4/20 E8D-LV Performance Evaluation: Uranium-Radium in Water, 14-Feb-1997
f
Uranium (Natural)
Lab
Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
A
24.1
25.7
26.0
1.02
0.374
25.27
-0.53
-1.00
AE
25.2
25.6
26.4
0.61
0.236
25.73
-0.26
-0.73
AF
27.1
30.8
30.3
2.01
0.728
29.40
1.86
1.39
AH
24.9
24.7
24.7
0.12
0.039
24.77
-0.82
-1.29
AJ
36,0
33.0
37.0
1.76
0.669
35.53
5.40
4.93 x
AK
24.2
25.3
27.4
1.63
0.630
25.63
-0.32
-0.79
AL
29.7
29.4
27.7
1.08
0.394
28.93
1.59
1.12
AP
3&&

mif
2.27
0.666
34.17
4.81
4.14 x
AR
24.3
24.5
24.9
0.31
0.118
24.57
-0.93
-1.40
AU







•
AW
27.4
26.8
26.5
0.46
0.177
26.90
0.42
-0.06
AZ
26.8
26.7
26.5
0.15
0.059
26.67
0.28
-0.19
BA
24.1
25.6
20.5
2.62
1.008
23.40
-1.61
-2.08
BC
26.8
26.6
26.5
0.15
0.059
26.63
0.26
-0.21
BG
26.6
26.8
26.1
0.36
0.138
26.50
0.18
-0.29
BG
25.1
24.9
26.4
0.81
0.295
25.47
-0.41
-0.89
BG
26.8
27.2
25.8
0.72
0.276
26.60
0.24
-0.23
BH
30.8
31.2
32.0
0.61
0.236
31.33
2.97
2.50
BK
24.8
24.2
24.3
0.32
0.118
24.43
-1.01
-1.48
BM
27.0
27.8
27.2
0.42
0.158
27.33
0.67
0.19
BN
22.9
24.8
24.3
0.98
0.374
24.00
-1.26
-1.73
BO
23.6
24.6
25.0
0.72
0.276
24.40
-1.03
-1.50
C
26.0
27.4
27.0
0.72
0.276
26.80
0.36
-0.12
CA
25.2
26.5
27.7
1.25
0.492
26.47
0.17
-0.31
CC
12.4
11.9
12.2
0.26
0.098
12.17
-8.09
-8.66 x
CE
30.3
31.8
31.6
0.81
0.295
31.23
2.92
2.44
CG
26.8
28.1
26.1
1.01
0.394
27.00
0.47
0.00
CJ
27.0
27.0
27.5
0.29
0.098
27.17
0.57
010
CM







•
CS
24.4
25.0
24.5
0.32
0.118
24.63
-0.89
-1.37
CX
29.9
29.7
29.8
0.10
0.039
29.80
2.09
1.62
D
26.1
26.8
25.8
0.51
0.197
26.23
0.03
-0.44
DB
22.0
25.0
27.0
2.52
0.984
24.67
-0.87
-1.35
DE
21.7
21.8
21.9
0.10
0.039
21.80
-2.53
-3.00
DI
25.8
26.1
27.0
0.62
0.236
26.30
0.07
-0.40
DO
24.4
26.6
24.9
1.15
0.433
25.30
-0.51
-0.98
DR







•
DT
25.0
23.2
23.3
1.01
0.354
23.83
-1.36
-1.83
DZ
20.5
23.1
21.8
1.30
0.512
21.80
-2.53
-3.00
E
26.9
25.6
28.2
1.30
0.512
26.90
0.42
-0.06
EB
24.3
24.3
24.8
0.29
0.098
24.47
-0.99
-1.46
EL
24.6
25.7
25.6
0.61
0.217
25.30
-0.51
-0.98
BO
*






' •
EP
-






• -
ER
25.4
25.3
25.7
0.21
0.079
25.47
-0.41
-0.89
• 3
0 3
No data submitted
Insufficient data
X 3
TAG SYMBOLS
Determined to be an outlier
IT s Above control limit
U s Below control limit J
-------

			
ESD-LV Performance Evaluation: Uranium-Radium in Water, 14-Feb-1997 5/20
Uranium (Natural)







Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation

Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
FE
21.4
21.8
21.4
0.23
0.079
21.53
-2.68
-3.16

FJ








. FN
10.2
9.9
10.1
0.15
0.059
10.07
-9.301
-9.78 V
'k *
GN
21.4
21.4
22.5
0.64
0.217
21.77
-2.55
-3.02

GQ
28.3
25.5
26.9
1.40
0.551
26.90
0.42
-0.06

HK
29.0
28.4
27.0
1.03
0.394
28.13
1.13
0.65

HL
27.9
27.8
25.5
1.36
0.473
27.07
0.51
0.04

HP
30.2
29.5
31.1
0.80
0.315
30.27
2.36
1.89

I
28.2
26.8
28.9
1.07
0.413
27.97
1.03
0.56

ED
, J./-
30.6
34.5
31.4
2.06
0.768
32.17
3.46
2.98
v
tIJ£
07 3k

mi
1.43
0.561
68.53
24.45
23.98
¦'*
X ,
JG









JK
27.1
28.2
28.3
0.67
0.236
27.87
0.97
0.50

JN
25.8
26.2
23.2
1.63
0.591
25.07
-0.64
-1.12

JP
24.4
23.9
25.7
0.93
0.354
24.67
-0.87
-1.35

JS
26.0
26.0
26.0
0.00
0.000
26.00
-0.10
-0.58

«JX









JY
29.2
26.0
26.0
1.85
0.630
27.07
0.51
0.04

K
31.8
29.0
29.1
1.59
0.551
29.97
2.19
1.71

KH
26.5
26.4
25.9
0.32
0.118
26.27
0.05
-0.42

KL








' •
KT
28.0
29.0
30.0
1.00
0.394
29.00
1.63
1.15

L
23.6
24.9
25.3
0.89
0.335
24.60
-0.91
-1.39

LF
29.0
28.0
26,0
1.53
0.591
27.67
0.86
0.38

LH








. #
LT
388.7
374.fi:
372.5
8.83
5.171
378.57
203.45
202.98
X
LZ
24.0
23.5
23.8
0.25
0.098
23.77
-1.39
-1.87

M
9.0;
9.8

0.06
0.020
9.57
- -9.591
ilO.07

MX









N
26.8
27.3
27.8
0.50
0.197
27.30
0.65
0.17

NA
26.0
26.0
26.0
0.00
0.000
26.00
-0.10
¦0.58

NH
39.32
mte
"319
3.81
1.870
30.13
5;7#
5;27S

NJ
29.4
31.4
28.5
1.48
0.571
29.77
2.07
1.60

NK
23.0
23.0
23.8
0.46
0.158
23.27
-1.68
-2.16

NO
27.1
28.1
29.1
1.00
0.394
28.10
1.11
0.64

NT
• n -
28.0
28.2
28.4
0.20
0.079
28.20
1.17
0.69

\j * -
OB
26.9
26.3
26.3
0.35
0.118
26.50
0.18
-0.29
• •
OF









OM








• •
OS
26.0
25.0
25.0
0.58
0.197
25.33
-0.49
-0.96	

OX









OY








. •
P
27.8
24.4
25.6
1.72
0.669
25.93
-0.14
-0.62

• =
No data submitted

TAG SYMBOLS

1T = Above control limit
I®.
Insufficient data
X s
Determined to be an outlier
Jl a Below control limit
	jj
-------
6/20 ESD-LV Performance Evaluation: Uranium-Radium in Water, 14-Feb-1997
Uranium (Natural)
Lab
Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average'
Normalized deviation
(grand-avg) (known) Tag
PB
8.9;
8.8
-8.7
0.10
0.039
8.80
-10.03
-10.51 X
PG
25.0
22.4
25.5
1.66
0.610
24.30
-1.09
-1.56
PQ
26.3
26.3
27.3
0.58
0.197
26.63
0.26
-0.21
FV
124.0
118.0
157.0
21.00
13.721
133.00
61.67
61.20 x
PW
23.8
24.0
23.4
0.31
0.118
23.73
-1.41
-1.89
PX
25.3
27.5
26.7
1.11
0.433
26.50
0.18
-0.29
Q
27.5
27.5
28.2
0.40
0.138
27.73
0.90
0.42
QM







• •
QQ
26.6
25.7
25.5
0.59
0.217
25.93
¦0.14
-0.62
QU
18.0
19.9
22.5
2.26
0.886
20.13
¦3.49
-3.96 U
QX
39Jfc
4?;6
"4d.3
4.15
2.208
43,33
9.90
•< 9.43 x
QZ
R
27.7
27.7
28.0
0.17
0.059
27.80
0.93
0.46
Alt
RD
24.1
24.1
24.1
0.01
0.000
24.10
-1.20
•
-1.67
RF
24.3
25.1
27.8
1.83
0.689
25.73
-0.26
-0.73
RG
26.6
26.7
26.4
0.15
0.059
26.57
0.22
-0.25
RK
13,7
12.7
14;0
0.68
0.256
13.47
-7.34
-7.81 x
RP
28.0
27.2
27.4
0.42
0.158
27.53
0.78
0.31
RR
28.6
28.1
28.4
0.25
0.098
28.37
1.26
0.79
RX
4.3
"6;0;
ei
1.08
0.394
5.53
-11.92
-12.39 "x
RZ
27.6
25.3
24.7
1.53
0.571
25.87
-0.18
-0.65
S
24.5
24.9
23.9
0.50
0.197
24.43
-1.01
-1.48
sc
27.8
27.3
28.1
0.40
0.158
27.73
0.90
0.42
SD
23.3
24.3
23.9
0.50
0.197
23.83
-1.36
-1.83
SF
26.1
26.4
26.1
0.17
0.059
26.20
0.01
-0.46
SI
26.6
26.1
26.3
0.25
0.098
26.33
0.09
-0.38
SL
25.0
26.0
25.0
0.58
0.197
25.33
-0.49
-0.96
SM
30.1
30.0
36.1
3.49
1.383
32.07
3.40
2.93
SO
25.3
27.2
26.1
0.95
0.374
26.20
0.01
-0.46
ss
27.3
25.7
26.3
0.81
0.315
26.43
0.15
-0.33
sx
26.6
26.7
25.2
0.84
0.295
26.17
-0.01
-0.48
sz
26.1
25.7
26.7
0.50
0.197
26.17
. -0.01
-0.48
T
28.0
26.8
25.5
1.25
0.492
26.77
0.34
-0.13
TD
27.8
27.4
28.0
0.31
0.118
27.73
0.90
0.42
TH








TL








TN







•
TQ
26.5
26.6
26.9
0.21
0.079
26.67
0-28

TS







• .
U
25.7
25.2
25.8
0.32
0.118
25.57
-0.35
-0.83
UB







¦
UP
24.7
24.3
21.4
1.80
0.650
23.47
-1.57
-2.04
UQ








UZ
27.8
23.0
22.3
2.99
1.158
24.37
-1.05
-1.52

50 5*
54;2-
62*
1.88
0.728
52.53
; 15.21
14.74 x
0 s
No data submitted
Insufficient data
TAG SYMBOLS
x a Determined to be an outlier
It = Above control limit
U 3 Below control limit
-------
r,		
			
ESD-LV Performance Evaluation: Uranium-Radium in Water, 14-Feb-1997 7 / 20
Uranium (Natural)








Lab
Res. 1



Exper.
Rng anal

Normalized deviation

Res. 2
Res. 3 Sigma
(R + SR)
Average (grand-avg) (known) Tag
VH
27.5

23.3
23.1 2.48
0.866
24.63 -0.89
-1.37

VI
26.1

26.1
25.1 0.58
0.197
25.77 -0.24
-0.71

w










wc










WG
26.8

26.8
26.0 0.46
0.158
26.53 0.20
-0.27

WH
26.4

33.4
30.4 3.51
1.720
30.07 2.24
1.77

WI
27.0

27.5
27.3 0.25
0.098
27.27 0.63
0.15

WJ
24.6

23.5
26.0 1.25
0.492
24.70 -0.85
-1.33

WO
27.6

26.9
27.7 0.44
0.158
27.40 0.70
0.23

WR
23.6

23.4
23.3 0.15
0.059
23.43 -1.59
-2.06

• WSi









•* -
wx
20.1

22.8
21.5 1.35
0.532
21.47 -2.72
-3.19

X
26.9

23.6
26.0 1.71
0.650
25.50 -0.39
-0.87

XA
24.9

30.0
25.8 2.72
1.008
26.90 0.42
-0.06

xc










•• Yv;














Data sorted by Laboratory Averaj
;©


Average

Tag

Lab
Average
Tag
Lab
Average
Tag
Lab
5.53

X

RX
24.43

BK
25.93

P
8.80

X

PB
24.47

EB
26.00

NA
9.57

X

M
24.57

AR
26.00

JS
10.07

X

FN
24.60

L
26.17

SZ
12.17

X

CC
24.63

VH
26.17

SX
13.47

X

RK
24.63

CS
26.20

SO
20.13

u

QU
24.67

JP
26.20

SF
21.47

u

WX
24.67

DB
26.23

D
21.53

u

FE
24.70

WJ
26.27

KH
21.77

4

GN
24.77

AH
26.30

DI
21.80



DZ
25.07

JN
26.33

SI
21.80



DE
25.27

A
26.43

ss
23.27



NK
25.30

EL
26.47

CA
23.40



BA
25.30

DO
26.50

PX
23.43



WR
25.33

SL
26.50

OB
23.47



UP
25.33

OS
26.50

BG
23.73



PW
25.47

ER
26.53

WG
23.77



LZ
25.47

BG
26.57

RG
23.83



SD
25.50

X
26.60

BG
23.83



DT
25.57

U
26.63

PQ
24.00



BN
25.63

AK
26.63

BC
24.10



RD
25.73

RF
26.67

TQ
24.30



PG
25.73

AE
26.67

AZ
24.37



UZ
25.77

VI
26.77

T
24.40



BO
25.87

RZ
26.80

C
24.43



S
25.93

QQ
26.90

XA
• s No data submitted

TAG SYMBOLS

It m Above control limit
0 a Insufficient data

x a Determined to be an outlier
•U a Below control limit
-------
8 / 20 ESD-LV Performance Evaluation: Uranium-Radium in Water, 14-Feb-1997
Uranium (Natural)
Data sorted by Laboratory Average
Average Tag
Lab
Average
Tag Lab
Average
Tag
Lab
26.90
GQ
27.73
SC
29.97

K
26.90
AW
27.73
Q
30.07

WH
26.90
E
27.80
QZ
30.27

HP
27.00
CG
27.87
JK
31.23

CE
27.07
HL
27.97
I
31.33

BH
27.07
JY
28.10
NO
32.07

SM
27.17
CJ
28.13
HK
32.17

ID
27.27
WI
28.20
NT
34.17
X
AP
27.30
N
28.37
RR
35.53
X
AJ
27.33
BM
28.93
AL
36.13
X
NH
27.40
WO
29.00
KT
43.33
X
QX
27.53
RP
29.40
AF
52.53
X
VA
27.67
LF
29.77
NJ
68.53
X
JE
27.73
TD
29.80
CX
133.00
X
PV




378.57
X
LT
% responding labs

Frequency distribution



lo-
ci	r
-6


	y
% responding labs
-4	-2	0	+2
Normalized deviation of the mean from the known value
Frequency distribution
+6
10-
0—1-
-6
		A.
¦¦-|hH|TlnT»

-4	-2	0	+2	+4
Normalized deviation of the mean from the grand average
+6
• = No data submitted
0 = Insufficient data
TAG SYMBOLS
x s Determined to be an outlier
ft s Above control limit
li s Below control limit
-------
ESD-LV Performance Evaluation: Uranium-Radium in Water, 14-Feb-1997 9/20
Radium-226	Statistical Summary	149 Participants
The known value of this nuclide is 5.9 pCi/1 with an expected precision of 0.9; the control limits
are 4.3 to 7.5; the warning regions are 4.3 to 4.9 and 6.9 to 7.5
Statistic	Respondents	Non-outliera
Mean
6.36
Grand Avg 5.95
Std. Dev.
2.20
0.79
Variance
4.86
0.63
% Coef. of Var.
34.67
13.29
% deviation of mean from known value
7.76
0.85
Norm. dev. of mean from known value
0.21
0.06
Median
6.00
5.97
% deviation of median from known value
1.69
1.13
Norm. dev. of median from known value
0.05
0.08
-------
10 / 20 E8D-LV Performance Evaluation: Uranium-Radium in Water, 14-Feb-1997
V 		'
Radium-226
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
A
5.0
5.6
5.1
0.32
0.394
5.23
-1.38
-1.28
AE
5.5
5.7
5.8
0.15
0.197
5.67
-0.55
-0.45
AF
5.8
5.8
5.5
0.17
0.197
5.70
-0.48
-0.38
AH
5.2
5.5
5.2
0.17
0.197
5.30
-1.25
-1.15
AJ
10.4
10.2
11.4
0.64
0.788
10.67
9.08
9.17 x
AK
5.7
6.0
5.3
0.35
0.459
5.67
-0.55
-0.45
AL
6.2
6.1
6.4
0.15
0.197
6.23
0.54
0.64
AP
5.0
5.2
5.4
0.20
0.263
5.20
-1.44
-1.35
AR







•
AU
¦Z&:

S.l
0.29
0.328
2.9$
•6.81
-5.71 x
AW
5.0
5.5
6.0
0.50
0.656
5.50
-0.87
-0.77 '
AZ
4.8
6.5
6.9
1.12
1.720
6.07
0.22
0.32
BA
6.1
6.2
5.9
0.15
0.197
6.07
0.22
0.32
BC
6.7
6.7
6.9
012
0.131
6.77
1.57
1.67
BO







•
BH
5.4
5.5
5.2
0.15
0.197
5.37
-1.12
-1.03
BK
5.7
5.7
5.8
0.06
0.066
5.73
-0.42
-0.32
BM
5.8
6.1
5.7
0.21
0.263
5.87
-0.16
-0.06
BN
5.7
5.8
7.1
0.78
0.919
6.20
0.48
0.58
BO
6.1
6.2
6.1
0.06
0.066
6.13
0.35
0.45
C
5.9
6.3
6.5
0.31
0.394
6.23
0.54
0.64
CA
6.6
6.7
6.9
0.15
0.197
6.73
1.51
1.60
CC
5.0
5.4
5.2
0.20
0.263
5.20
-1.44
-1.35
CE
5.9
5.9
5.2
0.40
0.459
5.67
-0.55
-0.45
CG
6.0
6.0
5.8
0.12
0.131
5.93
-0.03
0.06
CJ
5.0
5.4
5.4
0.23
0.263
5.27
-1.32
*122
CM








cs
6.0
5.7
6.2
0.25
0.328
5.97
0.03
,0.13
cx








D







• -
DB
6.9
6.0
7.5
0.75
0.984
6.80
1.64
1.73
DE
5.9
5.9
6.0
0.06
0.066
5.93
-0.03
0.06
DI







. •''
DO







. m~4,
DR







• /I
DT
4.8
4.9
5.1
0.15
0.197
4.93
-1.96
-1.86
DZ
7.1
7.3
7.3
0.12
0.131
7.23
2.47
2.57
E







• -
EB
5.4
5.4
5.9
0.29
0.328
5.57
-0.74
-0.64
EL
6.3
6.3
6.2
0.06
0.066
6.27
0.61
0.71
EO
6.2
6.3
4.5
1.01
1.345
5.67
-0.55
-0.45
EP








ER
6.1
6.2
6.2
0.06
0.066
6.17
0.42
051
FE







•-.o
Fj








• s No data submitted	TAG SYMBOLS	ft = Above control limit
0 = Insufficient data	x = Determined to be an outlier	II = Below control limit J
-------
' 	
	
ESD-LV Performance Evaluation: Uranium-Radium in Water, 14-Feb-1997 11/20
Radium-226
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
FN
5.4
5.3
5.6
0.15
0.197
5.43
-0.99
-0.90

GN
7.3
6.9
7.1
0.20
0.263
7.10
2.21
2.31

GQ
5.3
5.7
4.8
0.45
0.591
5.27
-1.32
-1.22

HK
6.0
5.9
5.8
0.10
0.131
5.90
-0.10
0.00

HL
5.8
5.9
6.2
0.21
0.263
5.97
0.03
0.13

HP
6.5
6.1
5.9
0.31
0.394
6.17
0.42
0.51

I
6.8
6.7
7.0
0.15
0.197
6.83
1.70
1.80

ro
' j,
6.3
6.8
5.7
0.55
0.722
6.27
0.61
0.71

JB?








"'•Iv
JG









JK









. m








" •'> i -
jp









JS
7.0
7.2
6.9
0.15
0.197
7.03
2.08
2.18

JX
6.6
6.8
7.0
0.20
0.263
6.80
1.64
1.73

JY
5.9
5.2
7.3
1.07
1.720
6.13
0.35
0.45

K
5.2
5.2
5.5
0.17
0.197
5.30
-1.25
-1.15

KH
5.4
5.3
5.6
0.15
0.197
5.43
-0.99
-0.90

KL
5.5
7.4
7.5
1.13
1.595
6.80
1.64
1.73

KT









L
5.2
5.6
5.8
0.31
0.394
5.53
-0.80
-0.71

LF{;:









LH









LT
6.6
7.1
7.7
0.55
0.722
7.13
2.28
2.37

LZ
6.0
6.0
6.1
0.06
0.066
6.03
0.16
0.26

M
6.9
6.9
7.2
0.17
0.197
7.00
2.02
2.12

MX









N *
5.7
5.9
6.2
0.25
0.328
5.93
-0.03
0.06

NA








. •
NH
5.4
5.8
5.1
0.35
0.459
5.43
-0.99
-0.90

NJ
7.4
9.2
6.6
1.33
2.345
7.73
3.43
3.53
it
NK









NO
6.1
6.2
6.7
0.32
0.394
6.33
0.74
0.83

NT
6.2
6.0
5.8
0.20
0.263
6.00
0.10
0.19

O
5.5
6.5
6.4
0.55
0.656
6.13
0.35
0.45

OB
5.4
5.8
5.4
0.23
0.263
5.53
-0.80
-0.71

OF
4.3
4.3
4.7
0.23
0.263
4.43
-2.92
-2.82

OM









.osl








>.»
ox
6.2
6.3
6.1
0.10
0.131
6.20
0.48
0.58

att









p
4.3
2.4
3.9
1.00
1.470
3.53
-4.65
-4.55

PB
5.9
6.1
6.0
0.10
0.131
6.00
0.10
0.19
-
PG
6.0
7.1
6.3
0.57
0.722
6.47
0.99
1.09

• S
l®.
No data submitted
Insufficient data
X 3
TAG SYMBOLS
Determined to be an outlier
ft a Above control limit
II 3 Below control limit
-------
'¦ 	
12/20 ESD-LV Performance Evaluation: Uranium-Radium in Water, 14-Feb-1997
v
	
Radium-226








Lab
Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
PQ'"








•
PV
25.0
25.6
17.2
4.69
9.596
22.60
32.04
32.14.
X
PW
7.3
5.4
5.7
1.02
1.470
6.13
0.35
0.45

PX
6.4
6.3
6.3
0.06
0.066
6.33
0.74
0.83

Q
7.6
6.0
7.1
0.82
1.095
6.90
1.83
1.92

QM
6.1
6.2
6.3
0.10
0.131
6.20
0.48
0.58

QQ
3.3
3.6
3.7
0.21
0.263
3.53
-4.65
-4.55
u
QU
12.1
14.0S
12*
0.95
1.470
13.00
13.57
•< n
13.66
x
QX
6.3
6.2
7.5
0.72
0.853
6.67
1.38
1.48

QZ
6.1
6.0
5.6
0.26
0.328
5.90
-0.10
0.00

R
4.8
4.4
4.4
0.23
0.263
4.53
-2.73
-2.63

RD
6.9
7.4
6.7
0.36
0.459
7.00
2.02
2.12

BF:









RG








9 -
RK
5.6
6.8
7.8
1.10
1.845
6.73
1.51
1.60

RP








•
RR









RX
12.0
12.T
1*3
.0.46.
0.591
12.40
12.41
12.61
X
RZ
5.8
5.6
5.7
0.10
0.131
5.70
-0.48
-0.38

S
6.2
6.0
6.2
0.12
0.131
6.13
0.35
0.45

sc
5.2
5.4
5.3
0.10
0.131
5.30
-1.25
-1.15

SD
5.8
4.7
4.3
0.78
0.984
4.93
-1.96
-1.86

SF
5.2
5.8
5.1
0.38
0.459
5.37
-1.12
-1.03

SI
7.8
7.9
7.5
021
0.263
7.73
3.43
3.53
tr
SL








*
SM
6.5
5.1
3.9
1.30
2.345
5.17
-1.51
-1.41

SO








- 9- ¦
ss
4.9
5.1
5.6
0.36
0.459
5.20
-1.44
-1.35

sx
6.3
6.7
6.7
0.23
0.263
6.57
1.19
1.28

sz
5.6
4.5
6.0
0.78
0.984
5.37
-1.12
-1.03

T
5.9
5.9
5.7
0.12
0.131
5.83
-0.22
-0.13

TD
4.3
4.5
4.3
0.12
0.131
4.37
-3.05
-2.95

TH








•
TL








• '
TN
4.2
4.0
4.5
0.25
0.328
4.23
-3.30
-3.21

TQ
6.7
6.6
6.5
0.10
0.131
6.60
1.25
1.35

TS








• ^
U
6.5
6.6
6.7
0.10
0.131
6.60
1.25
1.35

UE









UP
7.2
7.5
7.4
0.15
0.197
7.37
2.73
2.82

UQ
61
5.9
5.4
0.36
0.459
5.80
-0.29
-°19

UZ








'• •
VA
L4;8X
tl^i

2.80
5.971
11.73
1113
11.23

VH
6.0
6.0
6.7
0.40
0.459
6.23
0.54
0.64

VI
6.4
6.8
6.9
0.26
0.328
6.70
1.44
1.54

• =
No data submitted

TAG SYMBOLS

IT s Above control limit
[0^_
Insufficient data
X s
Determined to be an outlier
U 3 Below control limit
-------
ESD-LV Performance Evaluation: Uranium-Radium in Water, 14-Feb-1997 13/20
Radium-220
Lab
Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
.W~-








wc








wo








WH
5.3
5.3
6.1
0.46
0.525
5.57
-0.74
-0.64
WI








WJ
6.2
5.9
5.8
0.21
0.263
5.97
0.03
0.13
WO
6.1
5.7
5.5
0.31
0.394
5.77
-0.35
-0.26
TO







• -
WS







-• -•
WX
9.8
loo
9.9
0,10
0.131
9.90
7.60-
7.70 X
X
7.0
7.3
6.9
0.21
0.263
7.07
2.15
2.25
XA
4.7
7,3
4.9
1.45
2.345
5.63
-0.61
-0.51
XC







• -
Y







•
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
2.93
X
AU
5.57

WH
6.13

PW
3.53
U
QQ
5.57

EB
6.13

O
3.53
U
p
5.63

XA
6.13

JY
4.23

TN
5.67

EO
6.13

BO
4.37

TD
5.67

CE
6.17

HP
4.43

OF
5.67

AK
6.17

ER
4.53

R
5.67

AE
6.20

QM
4.93

SD
5.70

RZ
6.20

OX
4.93

DT
5.70

AF
6.20

BN
5.17

SM
5.73

BK
6.23

VH
5.20

SS
,5.77

WO
6.23

C
5.20

cc
5.80

UQ
6.23

AL
5.20

AP
5.83

T
6.27

ID
5.23

A
5.87

BM
6.27

EL
5.27

GQ
5.90

QZ
6.33

PX
5.27

CJ
5.90

HK
6.33

NO
5.30

K
5.93

N
6.47

PG
5.30

AH
5.93

DE
6.57

sx
5.30

SC
5.93

CG
6.60

u
5.37

sz
5.97

WJ
6.60

TQ
5.37

SF
5.97

HL
6.67

QX
5.37

BH
5.97

CS
6.70

VI
5.43

NH
6.00

PB
6.73

RK
5.43

KH
6.00

NT
6.73

CA
5.43

FN
6.03

LZ
6.77

BC
5.50

AW
6.07

BA
6.80

KL
*5.53

OB
6.07

AZ
6.80

JX
5.53

L
6.13

S
6.80

DB
• 3 No data submitted

TAG SYMBOLS

IT
a Above control limit
0 s Insufficient data

x = Determined to be an outlier

3 Below control limit
-------
14 / 20 ESD-LV Performance Evaluation: Uranium-Radium in Water, 14-Feb-1997
Radium-226
Average
Tag_
Data sorted by Laboratory Average
Lab Average	Tag	Lab
Average
Tag
Lab
6.83
6.90
7.00
7.00
7.03
7.07
I
Q
RD
M
JS
X
7.10
7.13
7.23
7.37
7.73
7.73
IT
It
GN
LT
DZ
UP
SI
NJ
9.90
10.67
11.73
12.40
13.00
22.60
x
x
X
X
X
X
WX
AJ
VA
RX
QU
PV
% responding labs	Frequency distribution
10-——=!?	
.l.l.l.lllli
t-	¦	,		, ¦ ¦¦?¦¦¦¦¦¦¦	>¦—
-6	-4	-2	6	+2	+4
Normalized deviation of the mean from the known value
% responding labs	Frequency distribution
10-
0	+2
i — * i — T	~ i M
-6	-4	-2	0+2+4
Normalized deviation of the mean from the grand average
• = No data submitted TAG SYMBOLS tt — Above control limit
0 a Tngnfficient data	x — Determined to be anoutlier	^^^g^Below^controHimit
-------
ESD-LV Performance Evaluation: Uranium-Radium in Water, 14-Feb-1997 15 / 20
Radium-228	Statistical Summary	149 Participants
The known value of this nuclide is 8.2 pCi/1 with an expected precision of 2.1; the control limits
are 4.6 to 11.8; the warning regions are 4.6 to 5.8 and 10.6 to 11.8
61(40.9 %) Failed to respond
7(4.7 %) Outliers
3(2.0 %) Out of control
but not an outlier
Statistic
. 73(49.0 %) Within all limits
Respondents
5(3.4 %) In warning zone
but within control
Non-outliers
Mean
10.26
Grand Avg 8.08
Std. Dev.
13.37
1.40
Variance
178.74
1.97
% Coef. of Var.
130.36
17.36
% deviation of mean from known value
25.07
-1.50
Norm. dev. of mean from known value
0.15
-0.09
Median
8.25
8.23
% deviation of median from known value
0.61
0.41
Norm. dev. of median from known value
0.00
0.02
10(11.4 %) More than 3 norm. S.D. *»
5(5.7 %) Between 2 and 3 norm. S.D.'
.56(63.6 %) Within 1 norm. S.D.
of known value
17(19.3 %) Between 1 and 2 norm. S.D.
-------
16 / 20 ESD-LV Performance Evaluation: Uranium-Radium in Water, 14-Feb-1997
Radium-228
Lab Res. 1
Rea. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average.
Normalized deviation
(grand-avg) (known) Tag
A
8.9
8.1
9.0
0.49
0.253
8.67
0.49
0.38
AE
7.9
7.1
7.8
0.44
0.225
7.60
-0.39
-0.49
AF
9.4
9.4
9.3
0.06
0.028
9.37
1.06
0.96
AH
6.6
6.9
6.4
0.25
0.141
6.63
-1.19
-1.29
AJ
5.1
6.6
5.0
0.90
0.450
5.57
-2.07
-2.17
AK
8.7
8.3
8.2
0.26
0.141
8.40
0.27
0.16
AL
8.6
9.5
9.6
0.55
0.281
9.23
0.95
0.85
AP
3.5
4.2
4.9
0.70
0.394
4.20
-3.20
-3.30
AR







• '
AIT







• . ,
AW
7.4
8.0
8.8
0.70
0.394
8.07
-0.01
-0.11
AZ
6.8
6.4
6.7
0.21
0.113
6.63
-1.19
-1.29
BA
8.1
8.0
8.7
0.38
0.197
8.27
0.16
0.05
BC







• -
BO







• ,
BH
8.5
8.8
9.6
0.57
0.309
8.97
0.73
0.63
BK
8.5
8.2
8.1
0.21
0.113
8.27
0.16
0.05
BM
8.6
9.0
8.7
0.21
0.113
8.77
0.57
0.47
Bfrr








BO
7.5
9.1
7.7
0.87
0.450
8.10
0.02
-0.08
C
6.9
7.5
7.5
0.35
0.169
7.30
-0.64
-0.74
CA
7.3
9.4
8.6
1.06
0.591
8.43
0.29
0.19
CC
10.2
10.0
10.3
0.15
0.084
10.17
1.72
1.62
CE
9.3
9.6
9.2
0.21
0.113
9.37
1.06
0.96
CG
9.1
8.6
9.7
0.55
0.309
9.13
0.87
0.77
CJ
8.7
8.4
8.1
0.30
0.169
8.40
0.27
0.16
CM







•
cs
91
10.2
9.6
0.55
0.309
9.63
1.28
1.18
cx







•
D







•
DB
6.3
6.8
6.5
0.25
0.141
6.53
-1.27
-1.37
DE
9.0
9.5
9.9
0.45
0.253
9.47
1.15
1.04
DI







•
DO







*
DB







•'
DT
7.8
7.7
8.1
0.21
0.113
7.87
-0.17
-0.27
DZ
7.4
7.1
7.7
0.30
0.169
7.40
-0.56
-0.66
E
5.2
5.4
5.3
0.10
0.056
5.30
-2.29
-2.39
EB
8.1
9.1
9.0
0.55
0.281
8.73
0.54
0.44
EL
10.0
7.8
10.3
1.37
0.703
9.37
1.06
0.96
EO
7.3
8.2
7.3
0.52
0.253
7.60
-0.39
-0.49
BP:







•• •
ER








. FBi







. • •-
FJ







•
• a No data submitted	TAG SYMBOLS	IT 3 Above cor^trol limit
0 s Insufficient data	x = Determined to be an outlier	II s Below control limit
-------
(>	
E8D-LV Performance Evaluation: Uranium-Radium in Water, 14-Feb-1997 17 / 20
Radium-228








Lab
Res. 1
Res. 2
Res. 3
Exper.
Rng anal

Normalized deviation

Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
FN
3.8
4.3
3.2
0.55
0.309
3.77
-3.56
-3.66

GN
7.3
6.9
7.1
0.20
0.113
7.10
-0.81
-0.91

GQ
6.6
5.9
6.2
0.35
0.197
6.23
-1.52
-1.62

HK
7.5
7.5
7.2
0.17
0.084
7.40
-0.56
-0.66

HL
9.2
9.3
9.8
0.32
0.169
9.43
1.12
1.02

HP
7.2
7.0
7.1
0.10
0.056
7.10
-0.81
-0.91

I
8.3
6.0
8.1
1.27
0.647
7.47
-0.50
-0.60

ID
7.8
7.0
7.5
0.40
0.225
7.43
-0.53
-0.63










.'Mi








«
JO








•
JKt








•
JN*








¦ \* \'
JP








, '
JS
8.5
7.6
8.6
0.55
0.281
8.23
0.13
0.03

JX
8.6
7.7
8.4
0.47
0.253
8.23
0.13
0.03

JY
10.1
9.6
11.1
0.76
0.422
10.27
1.81
1.70

K
8.4
10.1
9.4
0.85
0.478
9.30
1.01
0.91

KH
7.7
7.5
7.7
0.12
0.056
7.63
-0.37
-0.47

KL
9.8
9.9
9.1
0.44
0.225
9.60
1.26
1.15

•.Hi':








' ^ "
L
9.4
8.9
8.9
0.29
0.141
9.07
0.82
0.71

"iJP.f








' • -
IM








V~
LT
6.7
7.1
5.5
0.83
0.450
6.43
-1.36
-1.46

•lzt







•V -
' -
M
6.6
7.8
7.0
0.61
0.338
7.13
-0.78
-0.88

MX









N
7.2
8.1
7.6
0.45
0.253
7.63
-0.37
-0.47

NA









NH









NJ
10.0
9.4
10.0
0.35
0.169
9.80
1.42
1.32

NK









NO
7.9
8.7
9.0
0.57
0.309
8.53
0.38
0.27

NT
8.0
8.4
8.6
0.31
0.169
8.33
0.21
0.11

O
7.4
5.9
6.7
0.75
0.422
6.67
-1.16
-1.26

OB









OF:
20, *

12.5
8,31
7.989
20.57
10*30;
10,20

OM








-
OS








•
OX
8.4
8.5
8.4
0.06
0.028
8.43
0.29
0.19

at








• ,
p
3i6-
W
28
0.47
0.253
2.97
-4:2* .
-4.32
xV
PB
9.6
9.5
9.8
0.15
0.084
9.63
1.28
1.18

PG








V —
• 3
No data submitted

TAG SYMBOLS

ft a Above control limit
1 0 3
v>	
Insufficient data
x =
Determined to be an outlier
II s Below control limit
	0
-------
18/20 ESD-LV Performance Evaluation: Uranium-Radium in Water, 14-Feb-1997
Radium-228
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
PQ








' * -
PV
92.1
123.1
102.1
15.82
15,704
106,77
80 67
80;47 '
X
PW
7.9
7.9
8.4
0.29
0.141
8.07
-0.01
-0.11

PX









Q
12.6
12.2
11.7
0.45
0.253
12.17
3.37
3 27
n
QM









W








•
QU
7.9
10.2
9^5
1.18
0.647
9.20
0.93
0.82

QX
iilr
ler:
1*0?
0.51
0:281
17.13
tAl
7.37
X
QZ
9.4
7.9
7.7
0.93
0.478
8.33
0.21
0.11

r








•
RD
8.7
8.3
8.0
0.35
0.197
8.33
021
0.11

RF








•
RG








«
RK
86J
'&1:

1.10
0.619
86.23
63.84
63.54
x:' •
RP









RR









RX
6.8
8.0
7.7
0.62
0.338
7.50
-0.48
-0.58

RZ
7.7
7.8
7.6
0.10
0.056
7.70
-0.31
-0.41

S
7.9
7.8
8.0
0.10
0.056
7.90
-0.15
-0.25

sc
9.6
10.3
9.1
0.60
0.338
9.67
1.31
1.21

SD
7.2
7.6
7.4
0.20
0.113
7.40
-0.56
-0.66

SF
7.0
6.7
7.9
0.62
0.338
7.20
-0.72
-0.82

SI
5.3
5.9
5.8
0.32
0.169
5.67
-1.99
-2.09

SL








•
SM
7.6
7.3
7.0
0.30
0.169
7.30
-0.64
-0.74

SO









ss
7.3
6.6
9.1
1.29
0.703
7.67
-0.34
-0.44

sx
7.5
4.6
5.1
1.55
0.816
5.73
-1.93
-2.03

sz
8.3
9.1
8.7
0.40
0.225
8.70
0.51
0.41

T
8.6
8.1
8.0
0.32
0.169
8.23
0.13
0.03

TD
14,2
12.0
13&
0.81
0.450
13.33
4.34
4J23
x -
TH








•
TL









TN
7.2
8.9
8.0
0.85
0.478
8.03
-0.04
-0.14

TQ
8.6
8.6
8.7
0.06
0.028
8.63
0.46
0.36

TS









U
6.9
7.7
7.2
0.40
0.225
7.27
-0.67
-0.77

\UB'>









UP
8.9
9.5
9.0
0.32
0.169
9.13
0.87
0.77

UQ
8.5
8.5
8.4
0.06
0.028
8.47
0.32
0.22

W'








•-
VA








m"
VH
10.4
12.3
9.9
1.27
0.675
10.87
2.30
2.20

VI
9.0
7.3
9.1
1.01
0.506
8.47
0.32
0.22

• s No data submitted	TAG SYMBOLS	IT s Above control limit
0 = Insufficient data	x s Determined to be an outlier	II - Below control limit J
-------
E8D-LV Performance Evaluation: Uranium-Radium in Water, 14-Feb-1997 19 / 20
Radium-228
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
: W .







•
wc








wo







•
WH
8.2
7.0
8.2
0.69
0.338
7.80
-0.23
-0.33
WI







•
WJ
9.6
11.5
9.7
1.07
0.534
10.27
1.81
1.70
WO
3<8
3,2
2.8
0.50
0.281
3.27
-3.97
-4,07 x
WR







V
W8







*
WX








X
6.6
6.7
5.5
0.67
0.338
6.27
-1.49
-1.59
XA







• ¦
XC







• .
Y







•
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
2.97
X
P
7.60

EO
8.63

TQ
3.27
X
WO
7.60

AE
8.67

A
3.77

FN
7.63

N
8.70

SZ
4.20

AP
7.63

KH
8.73

EB
5.30

E
7.67

SS
8.77

BM
5.57

AJ
7.70

RZ
8.97

BH
5.67

SI
7.80

WH
9.07

L
5.73

SX
7.87

DT
9.13

UP
6.23

GQ
7.90

S
9.13

CG
6.27

X
8.03

TN
9.20

QU
6.43

LT
8.07

PW
9.23

AL
6.53

DB
8.07

AW
9.30

K
6.63

AZ
8.10

BO
9.37

EL
6.63

AH
8.23

T
9.37

CE
6.67

O
8.23

JX
9.37

AF
7.10

HP
8.23

JS
9.43

HL
7.10

GN
8.27

BK
9.47

DE
7.13

M
8.27

BA
9.60

KL
7.20

SF
8.33

RD
9.63

PB
7.27

U
8.33

QZ
9.63

CS
7.30

SM
8.33

NT
9.67

SC
7.30

C
8.40

CJ
9.80

NJ
7.40

SD
8.40

AK
10.17

CC
7.40

HK
8.43

OX
10.27

WJ
7.40

DZ
8.43

CA
10.27

JY
7.43

m
8.47

UQ
10.87

VH
7.47

I
8.47

VI
12.17
IT
Q
7.50

RX
8.53

NO
13.33
x
TD
• s No data submitted

TAG SYMBOLS

n
— Above control limit
0 s Insufficient data

x = Determined to be an outlier

= Below control limit
-------
United States
Environmental Protection
Agency
Office of Research and
Development
Washington, DC 20460
EPA/600/R-97/046
April 1997
Tritium in Water
Performance
Evaluation Study
A Statistical Evaluation of
the March 7, 1997 Data
-------
Tritium in Water
Performance Evaluation Study
March 7, 1997
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 Tritium in Water; March 7, 1997.
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-Mar-1997	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.
-------
r,	
2/9
ESD-LV Performance Evaluation: Tritium in Water, 7-Mar-1997
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 normalised 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-Mar-1997
3/9
Tritium	Statistical Summary	177 Participants
The known value of this nuclide is 7900.0 pCi/1 with an expected precision of 790.0; the control limits
are 6529.4 to 9270.6; the warning regions are 6529.4 to 6985.5 and 8814.5 to 9270.6
26(14.7 %) Failed to respond »
11 (6.2 %) Outliers
5(2.8 %) Out of control
but not an outlier
Statistic
; 127(71.8 %) Within all limits
Respondents
* 8(4.5 %) In warning zone
but within control
Non-outliers
Mean
7952.66
Grand Avg 7730.31
Std. Dev.
2055.14
531.81
Variance
4223583.92
282827.00
%Coef. ofVar.
25.84
6.88
% deviation of mean from known value
0.67
-2.15
Norm. dev. of mean from known value
0.03
-0.32
Median
7729.33
7723.83
% deviation of median from known value
-2.16
-2.23
Norm. dev. of median from known value
-0.08
-0.33
16(10.6 %) More than 3 norm. S.D.
8(5.3 %) Between 2 and 3 norm. S.D
,84(55.6 %) Within 1 norm. S.D.
J	of known value
•43(28.5 %) Between 1 and 2 norm. S.D.
-------
4 ! ®	ESD-LV Performance Evaluation: Tritium in Water, 7-Mar-1997
w		
c		
Tritium
Lab
Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
A
7795.0
7610.0
. 7345.0
226.18
0.336
7583.33
-0.32
-0.69
AE
8676.0
8852.0
8886.0
112.71
0.157
8804.67
2.36
1.98
AF
7890.0
7790.0
7470.0
219.40
0.314
7716.67
-0.03
-0.40
AH
7500.0
7590.0
7700.0
100.16
0.150
7596.67
-0.29
-0.67
At
6880.0
7070.0
6840.0
122.87
0.172
6930.00
-1.75
-2.13
AJ
8042.0
7916.0
7853.0
96.24
0.141
7937.00
0.45
0.08
AK
7687.0
7706.0
8071.0
216.42
0.287
7821.33
0.20
-0.17
AP
7623.0
7792.0
7874.0
127.98
0.188
7763.00
0.07
-0.30
AU
7700.0
7400.0
7600.0
152.75
0.224
7566.67
-0.36
-0.73
AW
7829.0
7912.0
7852.0
42.89
0.062
7864.33
0.29
-0.08
AY
7989.0
8086.0
7984.0
57.51
0.076
8019.67
0.63
0.26
AZ
7522.0
7161.0
7459.0
192.83
0.270
7380.67
-0.77
-1.14
BA
8171.0
8220.0
8440.0
143.28
0.201
8277.00
1.20
0.83
BB
8080.0
7830.0
7840.0
141.53
0.187
7916.67
0.41
0.04
BC
7023.0
7105.0
7187.0
82.02
0.123
7105.00
-1.37
-1.74
BG
6770.0
7188.0
7037.0
211.67
0.313
6998.33
-1.60
-1.98
BL
7576.0
7777.0
7956.0
190.10
0.284
7769.67
0.09
-0.29
BM
8140.0
7660.0
7900.0
240.00
0.359
7900.00
0.37
0.00
BO
7640.0
7780.0
7650.0
78.09
0.105
7690.00
-0.09
-0.46
BW
8044.0
7347.0
7406.0
386.51
0.521
7599.00
-0.29
-0.66
C
7574.0
7666.0
7755.0
90.50
0.135
7665.00
-0.14
-0.52
CA
7917.0
7431.0
7434.0
279.73
0.363
7594.00
-0.30
-0.67
CC
7802.0
7826.0
7560.0
147.15
0.199
7729.33
0.00
-0.37
CE
7380.0
7470.0
7214.0
129.88
0.191
7354.67
-0.82
-1.20
CG
5284:0'
47lC6
4Q26.C
[629.99
0.941
4676.33
-6.70 c
-7307 x •
CJ
7100.0
7200.0
7800.0
378.59
0.523
7366.67
-0.80
-1.17
CO
7608.0
7562.0
7567.0
25.19
0.034
7579.00
-0.33
-0.70
CP
9667.0
&20176
10648$
739^80
L156
9835:33
4.62
4.24 x *
CS
7760.0
8200^0
7860.0
230^65
0.329
7940.00
0.46
0.09
CX
8030.0
8310.0
8080.0
149.35
0.209
8140.00
0.90
0.53
D
7603.0
7643.0
7525.0
60.03
0.088
7590.33
-0.31
-0.68
DD
7650.0
7980.0
8000.0
196.55
0.262
7876.67
0.32
-0.05
DE
7954.0
7959.0
7965.0
5.60
0.008
7959.33
0.50
0.13
DH
7702.0
7567.0
7859.0
146.14
0.218
7709.33
-0.05
-0.42
DI
7700.0
7650.0
7700.0
28.83
0.037
7683.33
-0.10
-0.48
DR
7537.0
7711.0
7535.0
101.03
0.132
7594.33
-0.30
-0.67
DT
8000.0
8000.0
7900.0
57.74
0.075
7966.67
0.52
0.15
E
7356.0
7653.0
7785.0
219.73
0.321
7598.00
-0.29
-0.66
EA
8135.0
8261.0
8082.0
91.95
0.134
8159.33
0.94
0.57
EB
7450.0
7180.0
7000.0
226.49
0.336
7210.00
-1.14
-1.51
EH
6970.0
7360.0
7220.0
197.56
0.292
7183.33
-1.20
-1.57
EL
7030.0
8450.0
7360.0
743.13
1.118
7613.33
-0.26
-0.63
EW
8558.0
9122.0
8671.0
298.41
0.422
8783.67
2.31
1.94
EX
8561.0
8600.0
8633.0
36.03
0.054
8598.00
1.90
1.53
FE
7826.0
7543.0
7963.0
214.19
0.314
7777.33
0.10
-0.27
• s No data submitted TAG SYMBOLS ft = Above control limit
0 s Insufficient data	x = Determined to be an outlier	-li g Below control limit
-------
({	
ESD-LV Performance Evaluation: Tritium in Water,
7-Mar-1997
	^
5/9
Tritium







Lab
Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
Fjr
618010
,6390;0
4780,0
875.23
.1.388
5783.33.
-4 27.
*4.64. x i
FL
7691.0
7725.0
7694.0
18.74
0.025
7703.33
-0.06
-0.43
GO








GQ
6980.0
7140.0
6470.0
349.90
0.501
6863.33
-1.90
-2.27
HI
7982.0
7757.0
8016.0
140.75
0.194
7918.33
0.41
0.04
HK
7588.0
7670.0
7871.0
145.60
0.212
7709.67
-0.05
-0.42
HP
7270.0
7190.0
7120.0
75.08
0.112
7193.33
-1.18
-1.55
HR
8296.0
8372.0
8531.0
119.93
0.176
8399.67
1.47
1.10
I
8531.0
7981.0
7787.0
385.94
0.556
8099.67
0.81
0.44
jW








IU
'.Ji








JE*
25303 0
24443.0
25125.0
463.95
0.643
24957i00
37.77J
37.40 x?'
JK
7753.0
8120.0
7906.0
184.34
0.274
7926.33
0.43
0.06
JM
7275.0
7279.0
7250.0
15.75
0.022
7268.00
-1.01
-1.39
JN
8804.0
8755.0
8743.0
32.36
0.046
8767.33
2.27
1.90
JP
8069.0
7989.0
8019.0
40.45
0.060
8025.67
0.65
0.28
JB







v
JS
7270.0
7320.0
7230.0
45.14
0.067
7273.33
-1.00
-1.37
JY
7760.0
8220.0
7880.0
238.61
0.344
7953.33
0.49
0.12
K
7528.0
7469.0
7792.0
172.01
0.242
7596.33
-0.29
-0.67
KH
7870.0
7932.0
8176.0
161.76
0.229
7992.67
0.58
0.20
KM
8630.0
8180.0
8375.0
225.66
0.336
8395.00
1.46
1.09
KX
7910.0
7900.0
7980.0
43.57
0.060
7930.00
0.44
0.07
L
7808.0
7770.0
7787.0
19.07
0.028
7788.33
0.13
-0.24
LE
7029.0
7245.0
7535.0
253.90
0.378
7269.67
-1.01
-1.38
LF
7900.0
7900.0
8000.0
57.74
0.075
7933.33
0.45
0.07
LR
7768.0
7611.0
7654.0
81.14
0.117
7677.67
-0.12
-0.49
LT
6794.0
7512.0
7805.0
520.18
0.756
7370.33
-0.79
-1.16
M
8200.0
8300.0
8200.0
57.74
0.075
8233.33
1.10
0.73
MN
7380.0
7500.0
7400.0
64.29
0.090
7426.67
-0.67
-1.04
MT
7690.0
7739.0
7890.0
104.24
0.150
7773.00
0.09
-0.28
MV
8316.0
7933.0
7744.0
291.44
0.428
7997.67
0.59
0.21
N
7574.0
7448.0
7680.0
116.13
0.173
7567.33
-0.36
-0.73
i ytf)
:,NBLi
maffl
12490.0]

260.24
0.389

Mil!
;M62^ ''Wl
:• ?¦
NJ
8216.0
8135.0
8027.0
94.84
0.141
8126.00
0.87
0.50
NO
7991.0
8367.0
8996.0
507.78
0.751
8451.33
1.58
1.21
NP
9190.0
9476.0
9685.0
248.50
0.370
9450.33
3.77
3.40 IT
O
7636.0
7787.0
7764.0
81.38
0.113
7729.00
0.00
-0.37
OA
8100.0
7900.0
7800.0
152.75
0.224
7933.33
0.45
0.07
OK
7415.0
7197.0
7505.0
158.38
0.230
7372.33
-0.78
-1.16
OM







• ;
ot
7741.0
7431.0
7721.0
173.50
0.232
7631.00
-0.22
-0.59
ox
8031.0
8107.0
7678.0
228.92
0.321
7938.67
0.46
0.08
• =
No data submitted

TAG SYMBOLS

1T = Above control limit
U-
Insufficient data
X s
Determined to be an outlier
= Below control limit
-------
6/9
ESD-LV Performance Evaluation: Tritium in Water,
7-Mar-1997


Tritium








Lab
Res. 1


Exper.
Rng anal

Normalized deviation

Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
PB
7994.0
8033.0
7915.0
60.13
0.088
7980.67
0.55
0.18

PE :








' •> '
PM
7975.0
7940.0
7732.0
131.36
0.182
7882.33
0.33
-0.04

PQ
7935.0
7280.0
7744.0
336.85
0.490
7653.00
-0.17
-0.54

PV
6234.0
6693.0
6080.0
318.90
0.458
6335.67
-3.06
-3.43
Jl
Q
8275.0
8350.0
8675.0
212.62
0.299
8433.33
1.54
1.17

QC
11900.0
• 1O2O0.O •
ioooo;6
1044.03
L801
10700.00
6.51
6 14
- X /'
QD
8950.0
8437.0
8359.0
321.08
0.442
8582.00
1.87
1.50

QI
7220.0
7306.0
7198.0
57.11
0.081
7241.33
-1.07
-1.44

QM








¦ •
QP
8646.0
8736.0
8581.0
77.84
0.116
8654.33
2.03
1.65

QQ
7937.0
7481.0
7597.0
237.00
0.341
7671.67
-0.13
-0.50

QT
20686.0,
19102.0
19411:0
839.64
L351
19733.00
263S
^6.94
X •'
QU
7700.0
7796.0
7999.0
152.66
0.224
7831.67
0.22
-0.15

QW
7714.0
7770.0
7704.0
35.63
0.049
7729.33
0.00
-0.37

QX
8377.0
8278.0
8298.0
52.38
0.074
8317.67
1.29
0.92

QZ
6777.0
6924.0
7055.0
139.07
0.208
6918.67
-1.78
-2.15

R
7319.0
7368.0
7310.0
31.17
0.043
7332.33
-0.87
-1.24

RB
7496.0
7476.0
7588.0
59.73
0.084
7520.00
-0.46
-0.83

RP









RH









RK
10846.0
11393 0
lllOO.O
273.74:
0.409
11113.00
7.42
7.04
X
RO
7579.0
8319.0
8772.0
602.23
0.892
8223.33
1.08
0.71

RR
8014.0
7986.0
8052.0
33.19
0.049
8017.33
0.63
0.26

RU
7239.0
7186.0
7414.0
119.33
0.170
7279.67
-0.99
-1.36

RX
8452.0
8008.0
8937.0
464.65
0.695
8465.67
1.61
1.24

S
7741.0
7704.0
7798.0
47.37
0.070
7747.67
0.04
-0.33

sc
7510.0
8114.0
8026.0
326.30
0.452
7883.33
0.34
-0.04

SD
7380.0
7940.0
7660.0
280.00
0.419
7660.00
-0.15
-0.53

SF
7090.0
7198.0
7074.0
67.46
0.093
7120.67
-1.34
-1.71

SI
7051.0
7152.0
7062.0
55.42
0.076
7088.33
-1.41
-1.78

SM
7420.0
7310.0
7490.0
90.76
0.135
7406.67
-0.71
-1.08

SN
7500.0
7300.0
7700.0
200.00
0.299
7500.00
-0.50
-0.88

ss
7668.0
7515.0
7734.0
112.35
0.164
7639.00
-0.20
-0.57

su
7292.0
7513.0
7213.0
155.51
0.224
7339.33
-0.86
-1.23

sv
7203.0
7295.0
7208.0
51.76
0.069
7235.33
-1.09
-1.46

sz
8300.0
8119.0
8252.0
93.76
0.135
8223.67
1.08
0.71

T
7183.0
7137.0
7149.0
23.91
0.034
7156.33
-1.26
-1.63

TA








•.,
TC
6419.0
6297.0
6230.0
95.83
0.141
6315.33
-3.10
-3.47
i
TD
5960.0
6260.0
6288.0
181.83
0.245
6169.33
-3.42
-3.79
I
'tf"









TG








* • ^
TH









TL






.. 's
-------
ESD-LV Performance Evaluation: Tritium in Water, 7-Mar-1997	7/9
Tritium
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
TN
4892.0
5958*0
5711:0
557.99
0:797
5520.33
-4.85
'•-i5i22 *
*' X"
TO
8800.0
7600.0
7300.0
793.73
1.231
7900.00
0.37
0.00

TQ
7400.0
7600.0
7700.0
152.75
0.224
7566.67
-0.36
-0.73

yTU?i








-

20.0
21.0
21.0
0:58
0,001
20.67
-16.90
-17;28
iVx>,
u
8010.0
7960.0
8000.0
26.42
0.037
7990.00
0.57
0.20

'WO*









.jjlM








4 v. .v
UK
7500.0
7600.0
7200.0
208.17
0.299
7433.33
-0.65
-1.02

,il6u









UP
6839.0
7206.0
7300.0
243.59
0.345
7115.00
-1.35
-1.72

UT
7255.0
7394.0
7351.0
71.14
0.104
7333.33
-0.87
-1.24

ux
7294.0
7504.0
7467.0
112.11
0.157
7421.67
-0.68
-1.05

VA
8873.0
8152.0
9023.0
465.65
0.651
8682.67
2.09
1.72

VC
7967.0
7991.0
7811.0
97.75
0.135
7923.00
0.42
0.05

VE
7460.0
7140.0
7710.0
285.71
0.426
7436.67
-0.64
-1.02

VI
7020.0
7280.0
7270.0
147.30
0.194
7190.00
-1.18
-1.56

VM
7963.0
8306.0
7649.0
328.61
0.491
7972.67
0.53
0.16
•i - ••• '










VR
8551.0
8997.0
7607.0
709.71
1.075
8385.00
1.44
1.06

VW
6758.0
6369.0
6427.0
209.86
0.291
6518.00
-2.66
-3.03
u
VZ
vw?
WD
7570.0
7918.0
8266.0
348.00
0.520
7918.00
0.41
0.04
a ••
6827.0
6615.0
6625.0
119.63
0.159
6689.00
-2.28
-2.bb

WH
9001.0
8547.0
8766.0
227.05
0.339
8771.33
2.28
1.91

WJ
7609.0
7788.0
7852.0
125.95
0.182
7749.67
0.04
-0.33

wo









WP
7608.0
7608.0
7940.0
191.68
0.248
7718.67
-0.03
-0.40

WR
7914.0
7669.0
7866.0
129.83
0.183
7816.33
0.19
-0.18

"yrs:








; • •-
WT









WW
8833.0
8925.0
8835.0
52.53
0.069
8864.33
2.49
2.11

WX
7526.0
8449.0
7988.0
461.50
0.690
7987.67
0.56
0.19

wz
7497.0
7520.0
7499.0
12.86
0.017
7505.33
-0.49
-0.87

X
6478.0
6826.0
7178.0
350.00
0.523
6827.33
-1.98
-2.35

XB
6172.0
6524.0
7973.0
954.56
1.660
6889.67
-1.84
-2.22

XC
8758.0
8928.0
9033.0
138.77
0.206
8906.33
2.58
2.21

XD
7630.0
7660.0
7490.0
90.76
0.127
7593.33
-0.30
-0.67

¦ Tnt.


* *-»»» •* ¦**•-
11448.0
1906.35
4.429
1352700
Mm
12-34

XF
8760.0
7961.0
7907.0
477.66
0.638
8209.33
1.05
0.68

Y
7954.0
7734.0
7647.0
158.24
0.230
7778.33
0.11
-0.27

• s No data submitted TAG SYMBOLS IT = Above control limit
0 = Insufficient data	x = Determined to be an outlier	 s Below control limit J
-------
8/9	ESD-LV Performance Evaluation: Tritium in Water, 7-Mar-1997
Tritium
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
20.67
X
TX
7505.33

WZ
7864.33

AW
4675.33
X
CG
7520.00

KB
7876.67

DD
5520.33
X
TN
7566.67

TQ
7882.33

PM
5783.33
X
FJ
7566.67

AU
7883.33

sc
6169.33
JL
TD
7567.33

N
7900.00

TO
6315.33
u
TC
7579.00

CO
7900.00

BM
6335.67
11
PV
7583.33

A
7916.67

BB
6518.00
4
VW
7590.33

D
7918.00

VZ
6689.00

WD
7593.33

XD
7918.33

HI
6827.33

X
7594.00

CA
7923.00

VC
6863.33

GQ
7594.33

DR
7926.33

JK
6889.67

XB
7596.33

K
7930.00

KX
6918.67

QZ
7596.67

AH
7933.33

OA
6930.00

AI
7598.00

E
7933.33

LF
6998.33

BG
7599.00

BW
7937.00

AJ
7088.33

SI
7613.33

EL
7938.67

OX
7105.00

BC
7631.00

OT
7940.00

cs
7115.00

UP
7639.00

ss
7953.33

JY
7120.67

SF
7653.00

PQ
7959.33

DE
7156.33

T
7660.00

SD
7966.67

DT
7183.33

EH
7665.00

C
7972.67

VM
7190.00

VI
7671.67

QQ
7980.67

PB
7193.33

HP
7677.67

LR
7987.67

WX
7210.00

EB
7683.33

DI
7990.00

U
7235.33

sv
7690.00

BO
7992.67

KH
7241.33

Qi
7703.33

FL
7997.67

MV
7268.00

JM
7709.33

DH
8017.33

RR
7269.67

LE
7709.67

HK
8019.67

AY
7273.33

JS
7716.67

AF
8025.67

JP
7279.67

RU
7718.67

WP
8099.67

I
7332.33

R
7729.00

O
8126.00

NJ
7333.33

UT
7729.33

QW
8140.00

CX
7339.33

su
7729.33

CC
8159.33

EA
7354.67

CE
7747.67

s
8209.33

XF
7366.67

CJ
7749.67

WJ
8223.33

RO
7370.33

LT
7763.00

AP
8223.67

sz
7372.33

OK
7769.67

BL
8233.33

M
7380.67

AZ
7773.00

MT
8277.00

BA
7406.67

SM
7777.33

FE
8317.67

QX
7421.67

ux
7778.33

Y
8385.00

VR
7426.67

MN
7788.33

L
8395.00

KM
7433.33

UK
7816.33

WR
8399.67

HR
7436.67

VE
7821.33

AK
8433.33

Q
7500.00

SN
7831.67

QU
8451.33

NO
• = No data submitted
0 = Insufficient data
TAG SYMBOLS
x == Determined to be an outlier
It
s Above control limit
= Below control limit
-------
ESD-LV Performance Evaluation: Tritium in Water, 7-Mar-1997
9/9


Data sorted by Laboratory A vera j
re


Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
8465.67

RX
8771.33

WH
9835.33
X
CP
8582.00

QD
8783.67

EW
10700.00
X
QC
8598.00

EX
8804.67

AE
11113.00
X
RK
8654.33

QP
8864.33

WW
12743.33
X
NB
8682.67

VA
8906.33

XC
13527.00
X
XE
8767.33

JN
9450.33
n
NP
19733.00
24957.00
X
X
QT
JE
Tritium
% responding labs
Frequency distribution
10-
0-"°-
¦¦¦TBrtlilllljlii
¦M-f-
—r—
44
-4	-2	0	+2
Normalized deviation of the mean from the known value
+6
% responding labs	Frequency distribution
10-

—T	
-6	-4	-2	6+2+4	+6
Normalized deviation of the mean from the grand average
• = No data submitted
0 = Insufficient data
TAG SYMBOLS
x s Determined to be an outlier
1T s Above control limit
U = Below control limit
-------
United States
Environmental Protection
Agency
Office of Research and
Development
Washington, DC 20460
EPA/600/R-97/067A
July 1997
&EPA Blind-A Performance
Evaluation Study
A Statistical Evaluation of
the April 15,1997 Data
002RSL97.COV-067A
-------
Blind-A
Performance Evaluation Study
April 15, 1997
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
(702/793-2100)
Dear Participant,
Enclosed are tha results of the Environmental Sciences Division (ESD-LV)
Performance Evaluation Study for Bllnd-A; April 15, 1997.
The Known value for each analysis was determined by gravimetric methods,
checked by chemical analyses performed by ESD-LV's Radlochemistry 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
lor Various Analyses", which Is based on data accumulated over the years by tha
Performance Evafi/atton Program, and can be found in the Emriramantal 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. II 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 Ihe 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 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: Blind-A, 15-Apr-1997
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 Hint.rihnt.inn 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-LVPerformance Evaluation: Blind-A, lS-Apr-1997
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, 15-Apr-1997	3/30
Gross Alpha	Statistical Summary	179 Participants ]
The known value of this nuclide is 48.0 pCi/1 with an expected precision of 12.0; the control limits
are 27.2 to 68.8; the warning regions are 27.2 to 34.1 and 61.9 to 68.8
Statistic	Respondents	Non-outliers
Mean
53.70
Grand Avg 46.90
Std. Dev.
79.86
9.10
Variance
6376.94
82.85
% Coef. of Var.
148.70
19.41
% deviation of mean from known value
11.88
-2.30
Norm. dev. of mean from known value
0.07
-0.12
Median
47.07
47.03
% deviation of median from known value
-1.94
-2.01
Norm. dev. of median from known value
-0.01
-0.11
-------
(c	
4/30

ESD-LV Performance Evaluation: Blind-A, 15-Apr-1997

	^
Gross Alpha








Lab
Res. 1
Res. 2
Res. 3
Exper.
Rng anal

Normalized deviation

Sigma
(R + SR)
Average
(grand-avg)
(known) Tae
A
51.0
51.6
52.0
0.50
0.049
51.53
0.67
0.51

AE
47.0
42.6
50.1
3.77
0.369
46.57
-0.05
-0.21

AF
49.9
48.9
48.8
0.61
0.054
49.20
0.33
0.17

AH
59.6
52.7
44.5
7.56
0.743
52.27
0.78
0.62

AJ
49.3
44.1
52.2
4.10
0.399
48.53
0.24
0.08

AK
56.4
54.9
51.3
2.62
0.251
54.20
1.05
0.89

AL •
50.5
51.6
50.1
0.78
0.074
50.73
0.55
0.39

AP
53.7
51.3
49.0
2.35
0.231
51.33
0.64
0.48

AR
48.0
49.9
49.2
0.96
0.094
49.03
0.31
0.15

AU
45.1
43.4
52.8
5.01
0.463
47.10
0.03
-0.13

AW
39.7
40.5
42.7
1.55
0.148
40.97
-0.86
-1.02

AZ
42.9
41.5
44.2
1.35
0.133
42.87
-0.58
-0.74

BA
50.9
50.0
50.9
0.52
0.044
50.60
0.53
0.38

BB
31.8
29.2
28.7
1.66
0.153
29.90
-2.45
-2.61

BC
41.2
39.8
42.2
1.21
0.118
41.07
-0.84
-1.00

BG
30.0
26.0
43.0
8.89
0.837
33.00
-2.01
-2.17

BH
40.5
42.4
38.4
2.00
0.197
40.43
-0.93
-1.09

BK
44.0
42.0
44.0
1.15
0.098
43.33
-0.51
-0.67

BL









BM
50.1
49.7
49.5
0.31
0.030
49.77
0.41
0.25

BN
64.9
57.9
59.7
3.64
0.345
60.83
2.01
1.85

BO
45.2
43.6
42.2
1.50
0.148
43.67
-0.47
-0.63

BS
49.9
50.4
51.0
0.55
0.054
50.43
0.51
0.35

BW








>- • >* .
C
46.2
43.3
42.1
2.11
0.202
43.87
-0.44
-0.60

CA
46.1
43.3
43.5
1.56
0.138
44.30
-0.37
-0.53

CC
25.9
23.8
20.2
2.88
0.281
23.30
-3.41
-3.57

CE
38.5
34.9
44.1
4.64
0.453
39.17
-1.12
-1.27

CG
47.6
52.9
47.3
3.15
0.276
49.27
0.34
0.18

CJ
56.0
55.0
53.0
1.53
0 148
54.67
1.12
0.96

CM









CO
43.2
50.8
51.1
4.48
0.389
48.37
0.21
0.05

CP
36.4
36.4
34.6
1.04
0.089
35.80
-1.60
-1.76

cs
38.5
41.8
36.7
2.59
0.251
39.00
-1.14
-1.30

cx
46.4
50.4
46.8
2.20
0.197
47.87
0.14
-0.02

D
47.9
48.3
51.7
2.09
0.187
49.30
0.35
0.19

DB
44.3
45.2
46.6
1.16
0.113
45.37
-0.22
-0.38

DD
45.5
45.3
46.3
0.53
0.049
45.70
-0.17
-0.33

DE
56.2
56.5
56.8
0.30
0.030
56.50
1.39
1.23

DI ;








"V'u
DO









DS
44.7
48.5
43.6
2.57
0.241
45.60
-0.19
-0.35

DT
44.8
43.0
44.6
0.99
0.089
44.13
-0.40
-0.56

DZ
50.1
46.3
52.9
3.31
0.325
49.77
0.41
0.25

E
39.5
39.2
40.1
0.46
0.044
39.60
-1.05
-1.21

• = No data submitted

TAG SYMBOLS

ft = Above control limit
0 s Insufficient data
	
X s
Determined to be an outlier
11 s Below control limit
-------
r,	

ESD-LV Performance Evaluation: Blind-A, 15-Apr-1997
5/30
Gross Alpha








Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation

Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
EB
48.4
50.6
45.4
2.61
0.256
48.13
0.18
0.02

- ' EL -
-







EO
44.0
40.0
46.0
3.06
0.295
43.33
-0.51
-0.67

ER
54.7
56.8
55.8
1.05
0.103
55.77
1.28
1.12

EV
38.9
40.4
40.7
0.96
0.089
40.00
-1.00
-1.15

EX
71.8
71.5
65.4
3.61
0.315
69.57
3.27
3.11
It
FE
75.3
76.2
76.7
0.71
0.069
76.07
4.21
4.05

FF
37.4
38.9
42.1
2.40
0.231
39.47
-1.07
-1.23

FJ
36.0
26.7
29.3
4.80
0.458
30.67
-2.34
-2.50

FL
33.8
38.0
33.8
2.42
0.207
35.20
-1.69
-1.85

¦FN<

ffiS

51168^

, MVAMW
1OO2vO05
IDS8S
' 13£i70S

:GF









GQ
46.8
49.7
52.2
2.70
0.266
49.57
0.39
0.23

GZ
50.7
52.5
58.1
3.86
0.364
53.77
0.99
0.83

m
32.0
30.0
34.0
2.00
0.197
32.00
-2.15
-2.31

HK
57.5
56.2
61.0
2.48
0.236
58.23
1.64
1.48

HL
43.1
45.8
39.1
3.37
0.330
42.67
-0.61
-0.77

HP
46.8
47.6
50.7
2.06
0.192
48.37
0.21
0.05

HX^









I
40.8
41.2
41.3
0.26
0.025
41.10
-0.84
-1.00

ID
36.3
44.2
43.2
4.30
0.389
41.23
-0.82
-0.98

iu









J









JE
42.8
40.9
41 R
0 97
0.094
41.73
-0.75
-0.90

JO-









JM
43.8
44.7
44.7
0.52
0.044
44.40
-0.36
-0.52

JN
54.8
43.3
53.8
6.37
0.566
50.63
0.54
0.38

JQ
51.1
51.2
49.8
0.78
0.069
50.70
0.55
0.39

JS
39.2
35.0
39.9
2.65
0.241
38.03
-1.28
-1.44

JY
43.6
46.8
44.8
1.62
0.158
45.07
-0.26
-0.42

K
41.9
40.3
43.8
1.75
0.172
42.00
-0.71
-0.87

KE
77.8
71.9
76.1
3.04
0.290
75.27
4.09
3.94
it
KT
44.0
45.0
44.0
0.58
0.049
44.33
-0.37
-0.53

KX
51.0
55.0
58.0
3.51
0.345
54.67
1.12
0.96

L
53.7
54.3
50.4
2.10
0.192
52.80
0.85
0.69

LE
39.3
36.3
39.4
1.76
0.153
38.33
-1.24
-1.40

LF
29.0
31.0
30.0
1.00
0.098
30.00
-2.44
-2.60

LL
43.5
41.6
45.4
1.90
0.187
43.50
-0.49
-0.65

LR
48.6
46.1
46.4
1.36
0.123
47.03
0.02
-0.14

LT
48.5
45.8
49.4
1.87
0.177
47.90
0.14
-0.01

'Mv-
ifoi
w®

<2.89
WR

il®
grass
IP®
MF
48.9
49.4
49.5
0.32
0.030
49.27
0.34
0.18

Imp!








jr,-*
''¦jfcti.









MV
56.8
45.7
49.2
5.67
0.546
50.57
0.53
0.37

• =
No data submitted

TAG SYMBOLS

ft a Above control limit
0 H
Insufficient data
X s
Determined to be an outlier
li = Below control limit
-------
C(	
6/30
ESD-LV Performance Evaluation: Blind-A, 15-Apr-1997

	^
Gross Alpha








Lab
Res. 1
Res. 2
Res. 3
Exper.
Rng anal

Normalized deviation

Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
Mir,








•
N
48.0
49.3
49.2
0.72
0.064
48.83
0.28
0.12

NA
57.0
58.0
61.0
2.08
0.197
58.67
1.70
1.54

NH
37.0
40.0
28.0
6.24
0.591
35.00
-1.72
-1.88

NJ
43.4
43.4
40.3
1.79
0.153
42.37
-0.65
-0.81

NK
44.0
45.0
42.9
1.05
0.103
43.97
-0.42
-0.58

NO
46.3
50.7
51.1
3.24
0.285
49.03
0.31
0.15

NT
44.6
46.0
47.2
1.30
0.128
45.93
-0.14
-0.30

O
59.0
58.3
57.4
0.80
0.079
58.23
1.64
1.48

OB
47.8
43.2
44.8
2.34
0.226
45.27
-0.24
-0.39

OF
56.9
55.7
59.2
1.78
0.172
57.27
1.50
1.34

OM







-

OS
43.0
43.0
43.0
0.00
0.000
43.00
-0.56
-0.72

ox
63.3
75.4
57.5
9.13
0.881
65.40
2.67
2.51

OY








\
P
66.0
74.5
68.9
4.32
0.418
69.80
3.31
3.15
X!
PA









PB
51.0
49.4
50.7
0.85
0.079
50.37
0.50
0.34

PD
28.9
18.1
28.9
6.24
0.532
25.30
-3.12
-3.28

PG
53.9
61.5
61.1
4.28
0.374
58.83
1.72
1.56

PM
41.8
38.7
36.4
2.71
0.266
38.97
-1.14
-1.30

PQ








•
PR
42.3
45.6
44.7
171
0.162
44.20
-0.39
-0.55

PW








•
Q
50.4
46.6
46.4
2.25
0.197
47.80
0.13
-0.03

QM
63.6
61.7
61.7
1.10
0.094
62.33
2.23
2.07

QP
51.1
53.6
49.8
1.93
0.187
51.50
0.66
0.51

QQ
55.9
54.6
56.4
0.93
0.089
55.63
1.26
1.10

QT
45.9
49.3
44.8
2.35
0.222
46.67
-0.03
-0.19

QU
55.9
60.1
55.0
2.72
0.251
57.00
1.46
1.30

QW
58.1
59.7
55.8
1.96
0.192
57.87
1.58
1.42

QX
64.7
65.7
63.8
0.95
0.094
64.73
2.57
2.42

QY









QZ
39.8
48.2
48.0
4.79
0.413
45.33
-0.23
-0.38

RD
44.4
41.1
41.4
1.82
0.162
42.30
-0.66
-0.82

RF








>
RO
39.1
39.1
38.5
0.35
0.030
38.90
-1.15
-1.31

RI
55.5
58.5
58.0
1.61
0.148
57.33
1.51
1.35

RK
33.0
33.6
35.0
1.03
0098
33.87
-1.88
-2.04

RPi
t








RR
49.0
49.0
48.0
0.58
0.049
48.67
0.26
0.10

mi









RZ
62.8
60.4
58.8
2.01
0.197
60.67
1.99
1.83

S
63.9
62.7
59.4
2.33
0.222
62.00
2.18
2.02

sc
50.0
53.6
48.8
2.50
0.236
50.80
0.56
0.40

• =
No data submitted

TAG SYMBOLS

ft = Above control limit
{<*'
Insufficient data
x =
Determined to be an outlier
11 s Below control limit
-------
ESD-LV Performance Evaluation: Blind-A, 15-Apr-1997	7/30 1
Gross Alpha







>
Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation

Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tae
SD
45.7
45.2
38.4
4.08
0.359
43.10
-0.55
-0.71

SF
44.6
50.1
54.5
4.96
0.487
49.73
0.41
0.25

SG
17.5
17.5
15.7
1.04
0.089
16.90
-4.33
-4.49

SI
54.3
54.2
46.1
4.71
0.404
51.53
0.67
0.51

SL
50.0
52.0
53.0
1.53
0.148
51.67
0.69
0.53

SM
54.3
53.2
51.2
1.57
0.153
52.90
0.87
0.71

SN
43.7
42.3
44.3
1.03
0.098
43.43
-0.50
-0.66

SO
35.2
34.8
38.9
2.26
0.202
36.30
-1.53
-1.69

SR
43.2
46.2
47.3
2.12
0.202
45.57
-0.19
-0.35

SS
47.5
38.9
41.3
4.44
0.423
42.57
-0.62
-0.78

sx
50.2
47.8
48.4
1.25
0.118
48.80
0.27
0.12

sz
43.2
39.8
40.3
1.84
0.167
41.10
-0.84
-1.00

T
40.0
41.2
43.0
1.51
0.148
41.40
-0.79
-0.95

TD
35.5
34.6
28.7
3.69
0.335
32.93
-2.02
-2.17

.THw








r;-jw -
TL'J-









TN
58.4
41.2
53.9
8.92
0.847
51.17
0.62
0.46

TQ
47.5
46.8
46.9
0.38
0.034
47.07
0.02
-0.13

TS








£
TY
45.1
44.5
47.3
1.47
0.138
45.63
-0.18
-0.34

U
36.8
38.0
39.0
1.10
0.108
37.93
-1.29
-1.45

UA
61.0
56.0
59.0
2.52
0.246
58.67
1.70
1.54

UK








• ft
UP
37.0
37.1
40.4
1.93
0.167
38.17
-1.26
-1.42

UQ
41.0
39.0
44.0
2.52
0.246
41.33
-0.80
-0.96

VA








. S-J - *
-<*<^
VC








¦¦ - *
XF
38.1
38.6
39.0
0.45
0.044
38.57
-1.20
-1.36

• s No data submitted	TAG SYMBOLS	ft a Above control limit
0 = Insufficient data	x s Determined to be an outlier	11 a Below control limit
>i-						:			^
-------
® ! 30 ESD-LV Performance Evaluation: Blind-A, 15-Apr-1997
V

	^
Gross Alpha







Average Tag
Data sorted by Laboratory Average


Lab
Average
Tag
Lab
Average
Tag
Lab
16.90 U
SG
43.00

OS
49.03

NO
23.30 U
CC
43.03

VJ
49.03

AR
25.30 W.
PD
43.10

SD
49.20

AF
29.90
BB
43.33

EO
49.27

MF
30.00
LF
43.33

BK
49.27

CG
30.67
FJ
43.43

SN
49.30

D
32.00
HI
43.50

LL
49.37

WW
32.93
TD
43.67

BO
49.57

GQ
33.00
BG
43.87

C
49.73

SF
33.87
RK
43.97

NK
49.77

DZ
35.00
NH
44.13

DT
49.77

BM
35.20
FL
44.20

PR
50.37

PB
35.80
CP
44.30

CA
50.43

BS
36.30
SO
44.33

KT
50.57

MV
37.93
U
44.40

JM
50.60

BA
38.03
JS
45.07

JY
50.63

JN
38.17
UP
45.27

OB
50.70

JQ
38.33
LE
45.33

QZ
50.73

AL
38.57
XF
45.37

DB
50.80

SC
38.90
RG
45.57

SR
51.17

TN
38.97
WE
45.60

DS
51.20

W
38.97
PM
45.63

TY
51.33

AP
39.00
CS
45.70

DD
51.50

QP
39.17
CE
45.93

NT
51.53

SI
39.47
FF
46.57

AE
51.53

A
39.60
E
46.67

QT
51.67

SL
40.00
EV
46.70

VH
52.27

AH
40.43
BH
47.03

LR
52.80

L
40.97
AW
47.07

TQ
52.90

SM
41.07
BC
47.10

AU
53.77

GZ
41.10
sz
47.17

VI
54.20

AK
41.10
I
47.63

WH
54.67

KX
41.23
ID
47.80

Q
54.67

CJ
41.33
UQ
47.87

WR
55.63

QQ
41.40
T
47.87

CX
55.77

ER
41.73
JE
47.90

LT
56.50

DE
42.00
K
48.13

EB
57.00

QU
42.30
RD
48.30

X
57.27

OF
42.37
NJ
48.37

HP
57.33

RI
42.57
VO
48.37

CO
57.87

QW
42.57
SS
48.53

AJ
58.23

O
42.67
EEL
48.67

RR
58.23

HK
42.80
WO
48.80

SX
58.67

UA
42.87
AZ
48.83

N
58.67

NA
• 3 No data submitted

TAG SYMBOLS

It =
Above control limit
0 s Insufficient data
^	

x s Determined to be an
outlier

Below control limit J
-------
ESD-LV Performance Evaluation: Blind-A, 15-Apr-1997
9/30
Gross Alpha
Data sorted by Laboratory Average
Average Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
58.83
PG
62.33

QM
69.80
1t
P
60.67
RZ
64.73

QX
75.27
It
KE
60.83
BN
65.40

OX
76.07
it
FE
62.00
S
69.57
It
EX
78.67
X
M





1002.00
X
FN
% responding labs

Frequency distribution




10-
o	r
-6


% responding labs
-4	-2	0	+2
Normalized deviation of the mean from the known value
Frequency distribution
10-
"rs
¦T-a iMnUl
ibmb—¦
+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
IT = Above control limit
= Below control limit
-------
ESD-LV Performance Evaluation: Blind-A, 15-Apr-1997
10/30
Radium-226	Statistical Summary	179 Participants
The known value of this nuclide is 13.0 pCi/1 with an expected precision of 2.0; the control limits
are 9.5 to 16.5; the warning regions are 9.5 to 10.7 and 15.3 to 16.5
82(45.8 %) Failed to respond
3(1.7 %) Outliers
2(1.1 %) Out of control
but not an outlier
Statistic
, 86(48.0 %) Within all limits
Respondents
6(3.4 %) In warning zone
but within control
Non-outliers
Mean
12.92
Grand Avg 12.60
Std. Dev.
4.69
1.29
Variance
22.02
1.66
% Coef. of Var.
36.32
10.24
% deviation of mean from known value
-0.60
-3.12
Norm. dev. of mean from known value
-0.02
-0.31
Median
12.63
12.72
% deviation of median from known value
-2.82
-2.18
Norm. dev. of median from known value
-0.08
-0.22
5(5.2 %) More than 3 norm. S.D.
6(6.2 %) Between 2 and 3 norm. S.D. •
• 63(64.9 %) Within 1 norm. S.D.
of known value
23(23.7 %) Between 1 and 2 norm. S.D.
-------
11/30
ESD-LV Performance Evaluation: Blind-A, 15-Apr-1997

	^
Radium-226








Lab
Res. 1
Res. 2
Res. 3
Exper.
Rng final

Normalized deviation

Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
A
11.7
12.1
10.7
0.72
0.413
11.50
-0.95
-1.30

AE
11.8
11.7
11.6
0.10
0.059
11.70
-0.78
-1.13

AF
13.0
12.9
12.8
0.10
0.059
12.90
0.26
-0.09

AH
12.4
12.6
11.8
0.42
0.236
12.27
-0.28
-0.64

AJ
11.4
13.6
12.6
1.10
0.650
12.53
-0.05
-0.40

AK
12.4
12.9
13.2
0.40
0.236
12.83
0.21
-0.14

AL
12.9
11.2
12.8
0.95
0.502
12.30
-0.26
-0.61

AP
11.3
11.2
13.3
1.18
0.620
11.93
-0.57
-0.92

AR








' • V
AU
6.0
5.6
5.8
0.20
0.118
5.80
-6.88:
-6.24
"jg**
AW
11.4
12.1
12.3
0.47
0.266
11.93
-0.57
-0.92

AZ
13.9
13.5
13.7
0.20
0.118
13.70
0.96
0.61

BA
121
11.1
11.5
0.50
0.295
11.57
-0.89
-1.24

BB








. •
BC
12.9
12.9
12.9
0.00
0.000
12.90
0.26
-0.09

BO








"*¦ - V" 7
BH
12.4
12.3
13.1
0.44
0.236
12.60
0.00
-0.35

BK
12.9
12.7
12.8
0.10
0.059
12.80
0.18
-0.17

BL









BM
13.0
12.3
12.6
0.35
0.207
12.63
0.03
-0.32

BN
15.8
17.0
17.1
0.72
0.384
16.63
3.50
3.15
It
BO
13.3
12.8
13.2
0.26
0.148
13.10
0.44
0.09

BS








•
BW









C
12.5
12.4
12.0
0.26
0.148
12.30
-0.26
-0.61

CA
10.9
9.7
11.5
0.92
0.532
10.70
-1.64
-1.99

CC
69.1
63.0
66.4
3.06
2.527
56.17
37.73
37:38
X
CE
12.3
13.9
14.2
1.02
0.561
13.47
0.75
0.40

CG
13.4
12.7
12.9
0.36
0.207
13.00
0.35
0.00

CJ
120
13.0
14.0
1.00
0.591
13.00
0.35
0.00

CM








¦V7
• •
CO








•
CP









CS
134
14.3
13.9
0.45
0.266
13.87
1.10
0.75

CX









D








DB
11.4
11.6
12.1
0.36
0.207
11.70
-0.78
-1.13

DD








;•
DE
13.4
13.4
13.4
0.00
0.000
13.40
0.70
0.35

DI








.
DO








"rV
DS









DT
12.9
12.7
11.5
0.76
0.413
12.37
-0.20
-0.55

DZ
13.6
13.1
14.8
0.87
0.502
13.83
1.07
0.72

E
11.7
11.4
11.1
0.30
0.177
11.40
-1.03
-1.39

• =
No data submitted

TAG SYMBOLS

11 = Above control limit
0 a
Insufficient data
x =
Determined to be an outlier
11 s Below control limit
-------
ESD-LV Performance Evaluation: Blind-A, 15-Apr-1997	12 / 30
Radium-226








Lab
Res. 1
Res. 2
Res. 3
Exper.
Rng anal

Normalized deviation

Sigma
(R + SR)
Average
(grand-avg) (known) Tae
EB
14.0
14.1
13.7
0.21
0.118
13.93
1.16
0.81

EL
14.2
13.8
13.7
0.26
0.148
13.90
1.13
0.78

EO
13.4
13.3
13.3
0.06
0.030
13.33
0.64
0.29

ER
12.2
124
12.1
0.15
0.089
12.23
-0.31
-0.66









9 ,
EX









FE
11.6
11.6
11.2
0.23
0.118
11.47
-0.98
-1.33

ff:








PJ








:7 *










FN
10.7
10.8
10.7
0.06
0.030
10.73
-1.61
-1.96
v *
Tgi?<







•i.
GQ
13.3
16.0
14.5
1.35
0.797
14.60
1.74
1.39

:QZi







r
#>£T
m








# -
HK
13.5
13.4
13.4
0.06
0.030
13.43
0.73
0.38

HL
13.2
12.8
14.4
0.83
0.473
13.47
0.75
0.40

HP
13.6
13.3
14.2
0.46
0.266
13.70
0.96
0.61

HZ








c'j.
I
12.4
13.3
13.9
0.75
0.443
13.20
0.52
0.17

ID
11.4
11.0
9.8
0.83
0.473
10.73
-1.61
-1.96

iu








*
J








• '-f
JE









JO








*> -
JM


















v *¦
+ '
JQs









JS
10.6
11.6
11.1
0.50
0.295
11.10
-1.29
-1.65

JY
12.7
16.9
15.9
2.19
1.458
15.17
2.23
1.88

K
12.5
11.5
13.0
0.76
0.443
12.33
-0.23
-0.58

KTC








• u
KT








•V'' *
K*i









L
9.8
10.7
11.5
0.85
0.502
10.67
-1.67
-2.02

le









If"
•= -/"W
IX

















Wm
LR









LT
10.9
11.1
11.0
0.10
0.059
11.00
-1.38
-1.73

M
12.6
12.8
13.9
0.70
0.384
13.10
0.44
0.09

MF








• :
MP








.?W
MT








4 -
• •









w
•M
Mo data submitted

TAG SYMBOLS

ft s Above control limit
0 3
^	
Insufficient data
X 5
Determined to be an outlier
s Below control limit
-------
13/30
ESD-LV Performance Evaluation: Blind-A, 15-Apr-1997
Radium-226







>
Lab
Res. 1
Res. 2
Res. 3
Exper.
Rng anal

Normalized deviation

Sigma
(R + SR)
Average
(grand-avg)
(known) Tae










N
12.4
12.2
12.3
0.10
0.059
12.30
-0.26
-0.61

NA«'







s •' •"
NH
14.5
13.5
13.4
0.61
0.325
13.80
1.04
0.69

NJ
13.8
12.6
13.9
0.72
0.384
13.43
0.73
0.38

NK*








NO
30.2
1L2
11.3
0.61
0.325
10.90
-1.47
-1.82

NT
12.9
13.2
13.4
0.25
0.148
13.17
0.50
0.14

O
9.8
10.3
10.2
0.26
0.148
10.10
-2.16
-2.61

OB
14.0
14.0
14.0
0.00
0.000
14.00
1.22
0.87

OF
11.4
11.2
8.9
1.39
0.738
10.50
-1.81
-2.17

OMf









OS
10.7
11.0
11.7
0.51
0.295
11.13
-1.27
-1.62

ox
12.4
13.4
13.4
0.58
0.295
13.07
0.41
0.06

or







- v.
•
p
12.9
12.9
11.7
0.69
0.354
12.50
-0.08
-0.43

PA









PB
12.9
13.1
12.8
0.15
0.089
12.93
0.29
-0.06

PD









PG
11.6
12.0
9.3
1.46
0.797
10.97
-1.41
-1.76

irar








• -¦
PQ









PR








•
PW
13.1
14.9
11.4
1.75
1.064
13.13
0.47
0.12

Q
14.5
14.2
14.4
0.15
0.089
14.37
1.53
1.18

QM
13.7
133
13.0
0.35
0.207
13.33
0.64
0.29


f-







"w
QQ
17.2
16.8
15.3
1.00
0.561
16.43
3.32
2.97

QTf
61
7.9 r.

: 13£
0.768
!7.57;v


X ;
QU
11.2
12.9
12.5
0.89
0.502
12.20
-0.34
-0.69

QW








¦
QX
9.9
10.5
9.4
0.55
0.325
9.93
-2.31
-2.66

QY
12.2
12.6
12.8
0.31
0.177
12.53
-0.05
-0.40

QZ
13.1
13.8
11.9
0.96
0.561
12.93
0.29
-0.06

RD
12.8
14.9
13.5
1.07
0.620
13.73
0.99
0.64

RF








" * -
RG








- + * '5
iter
Mfe









RK
10.3
9.1
12.8
1.89
1.177
10.73
-1.61
-1.96

' Rpv








j
RR
'








~RUi









RZ
12.8
12.7
13.1
0.21
0.118
12.87
0.24
-0.12

S
13.1
13.3
13.2
0.10
0.059
13.20
0.52
0.17

sc
11.3
7.3
8.4
2.07
1.345
9.00
-3.11
-3.46

• 2 No data submitted

TAG SYMBOLS

ff s Above control limit
0 =
Insufficient data
x =
Determined to be an outlier
11 s Below control limit
-------
ESD-LV Performance Evaluation: Blind-A, 15-Apr-1997	14 / 30 ¦
Radium-226	~	" '
Exper. Rng anal	Normalized deviation
Res. 2 Res. 3 Sigma (R + SR) Average (grand-avg) (known) Tag
SD
12.8
13.1
11.9
0.62
0.354
12.60
0.00
-0.35

SF
10.8
10.8
12.2
0.81
0.413
11.27
-1.15
-1.50

sg-;








SI
12.5
12.2
12.2
0.17
0.089
12.30
-0.26
-0.61










SM
10.8
11.0
11.1
0.15
0.089
10.97
-1.41
-1.76
A , V? v
•sn£







T» '
rsav:








A.
SR v.









ss
12.4
13.8
12.8
0.72
0.413
13.00
0.35
0.00

sx
13.8
13.2
10.5
1.76
0.975
12.50
-0.08
-0.43

sz
12.0
11.6
11.1
0.45
0.266
11.57
-0.89
-1.24

T
12.3
13.6
13.5
0.72
0.384
13.13
0.47
0.12

TD
10.6
12.0
12.6
1.03
0.591
11.73
-0.75
-1.10










•»> _
Tt









TN
12.2
11.8
12.0
0.20
0.118
12.00
-0.52
-0.87

TQ
12.3
13.0
11.2
0.91
0.532
12.17
-0.37
-0.72

TS„









...








lift
u
13.1
12.2
13.7
0.75
0.443
13.00
0.35
0.00











UK









UP
12.6
12.3
13.7
0.74
0.413
12.87
0.24
-0.12
(
UQ
12.9
12.9
12.8
0.06
0.030
12.87
0.24
-0.12

VA
12.9
11.6
12.9
0.75
0.384
12.47
-0.11
-0.46

VC








—r
VH
13.4
12.6
11.9
0.75
0.443
12.63
0.03
-0.32

VI
13.5
14.3
14.5
0.53
0.295
14.10
1.30
0.95

VJ








¦SSSi
VM








mk
VO









VT








"
W
11.5
11.8
12.1
0.30
0177
11.80
-0.69
-1.04

we;








	"'Sf
WH
12.4
13.3
13.0
0.46
0.266
12.90
0.26
-0.09

WO
12.6
14.6
13.0
1.06
0.591
13.40
0.70
0.35

WRY



















X
13.4
12.9
13.0
0.26
0.148
13.10
0.44
0.09

XA
14.8
16.2
15.2
0.72
0.413
15.40
2.43
2.08

xcf








g&ss:
jOEDfl;



















• s No data submitted TAG SYMBOLS It s Above control limit
0 = In8"ff?cient data	x = Determined to be an outlier	U 3 Below control limit
-------

15/30
ESD-LV Performance Evaluation: Blind-A, 15-Apr-1997
Radium-226
Data sorted
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
5.80
X
AU
12.23

ER
13.10

X
7.57
X
QT
12.27

AH
13.10

M
9.00
u
SC
12.30

SI
13.10

BO
9.93

QX
12.30

N
13.13

T
10.10

O
12.30

C
13.13

PW
10.50

OF
12.30

AL
13.17

NT
10.67

L
12.33

K
13.20

I
10.70

CA
12.37

DT
13.20

S
10.73

RK
12.47

VA
13.33

QM
10.73

ID
12.50

SX
13.33

EO
10.73

FN
12.50

p
13.40

WO
10.90

NO
12.53

QY
13.40

DE
10.97

SM
12.53

AJ
13.43

NJ
10.97

PG
12.60

SD
13.43

HK
11.00

LT
12.60

BH
13.47

HL
11.10

JS
12.63

VH
13.47

CE
11.13

OS
12.63

BM
13.70

AZ
11.27

SF
12.80

BK
13.70

HP
11.40

E
12.83

AK
13.73

RD
11.47

FE
12.87

UQ
13.80

NH
11.50

A
12.87

UP
13.83

DZ
11.57

SZ
12.87

RZ
13.87

CS
11.57

BA
12.90

WH
13.90

EL
11.70

DB
12.90

BC
13.93

EB
11.70

AE
12.90

AF
14.00

OB
11.73

TD
12.93

QZ
14.10

VI
11.80

W
12.93

PB
14.37

Q
11.93

AW
13.00

U
14.60

GQ
11.93

AP
13.00

ss
15.17

JY
12.00

TN
13.00

CJ
15.40

XA
12.17

TQ
13.00

CG
16.43

QQ
12.20

QU
13.07

OX
16.63
56.17
ft
X
BN
CC
% responding labs
10-
Frequency distribution
-2	0	+2
Normalized deviation of the mean from the known value
• s No data submitted
0 = Insufficient data
TAG SYMBOLS
x = Determined to be an outlier
ft a Above control limit
•U- g Below control limitj
-------
	
ESD-LV Performance Evaluation: Blind-A, 15-Apr-1997	16/30
Radium-226
% responding labs	Frequency distribution
10-

I ~—i	~ I		 I	I ""	1—W I
-6	-4	-2	0	+2	+4	+6
Normalized deviation of the mean from the grand average
-------
ESD-LV Performance Evaluation: Blind-A, 15-Apr-1997
17/30
Radium-228	Statistical Summary	179 Participants
The known value of this nuclide is 3.1 pCi/1 with an expected precision of 0.8; the control limits
are 1.7 to 4.5; the warning regions are 1.7 to 2.2 and 4.0 to 4.5
92(51.4 %) Failed to respond
3(1.7 %) Outliers
12(6.7 %) Out of control
but not an outlier
Statistic
. 59(33.0 %) Within all limits
Respondents
% 13(7.3 %) In warning zone
but within control
Non-outliers
Mean
3.51
Grand Avg 3.39
Std. Dev.
1.05
0.86
Variance
1.10
0.73
% Coef. of Var.
29.88
25.23
% deviation of mean from known value
13.16
9.38
Norm. dev. of mean from known value
0.39
0.34
Median
3.33
3.25
% deviation of median from known value
7.53
4.84
Norm. dev. of median from known value
0.22
0.18
15(17.2 %) More than 3 norm. S.D. %
• 42(48.3 %) Within 1 norm. S.D.
of known value
-------
o	
18/30
v

ESD-LV Performance Evaluation: Blind-A, 15-Apr-1997

	
Radiuin-228








Lab
Res. 1
Res. 2
Res. 3
Exper.
Rng anal

Normalized deviation

Sigma
(R + SR)
Average
(grand-avg)
(known) Tae
A
2.6
2.2
2.4
0.20
0.295
2.40
-2.15
-1.52

AE
3.0
3.1
2.9
0.10
0.148
3.00
-0.85
-0.22

AF
3.5
3.5
3.6
0.06
0.074
3.53
0.31
0.94

AH
3.6
3.7
2.4
0.72
0.960
3.23
-0.34
0.29

AJ
3.1
2.8
3.4
0.30
0.443
3.10
-0.63
0.00

AK
5.2
4.4
4.4
0.46
0.591
4.67
2.76
3.39
It
AL
2.8
2.0
2.1
0.44
0.591
2.30
-2.36
-1.73

AP
3.6
4.9
4.2
0.65
0.960
4.23
1.82
2.45

'.AR$







ii
au;-








* -
AW
3.5
3.7
3.8
0.15
0.222
3.67
0.60
1.23

AZ
2.3
2.4
2.5
0.10
0.148
2.40
-2.15
-1.52

BA
2.5
2.6
3.2
0.38
0.517
2.77
-1.35
-0.72

BB









BC
2.6
3.1
2.1
0.50
0.738
2.60
-1-71
-1.08

BO








• '
BH
2.8
3.6
2.3
0.66
0.960
2.90
-1.06
-0.43

BK
3.4
3.2
3.0
0.20
0.295
3.20
-0.41
0.22

BL








. .
BM
4.5
5.1
4.3
0.42
0.591
4.63
2.69
3.32

BN








• •
BO
2.8
3.5
3.1
0.35
0.517
3.13
-0.56
0.07

BS








•
BW








•
C
4.5
3.8
3.3
0.60
0.886
3.87
1.03
1.66

CA
5.1
4.8
4.3
0.40
0.591
4.73
2.91
3.54
X
CC
7:8 =
6.5^
6,5
0.75
0.960
6.93
7.67
8M

CE
3.2
3.6
2.9
0.35
0.517
3.23
-0.34
0.29

CG
2.2
1.3
2.9
0.80
1.345
2.13
-2.72
-2.09

CJ
5.0
4.8
4.8
0.12
0.148
4.87
3.20
3.82
ir
CM








• .
CO;








»<¦*?>• iv
CP









CS
4.3
4.2
4.3
0.06
0.074
4.27
1.90
2.53

cx








.. - T
'p\>









DB
3.3
3.0
2.9
0.21
0.295
3.07
-0.70
-0.07

DD









DE
5.7
5.8
5.9
0.10
0.148
5.80
5.22
5.86
!L.
bi,








.
DO-








^ '
DS









DT
4.0
4.4
5.0
0.50
0.738
4.47
2.33
2.96

DZ
3.6
3.2
3.2
0.23
0.295
3.33
-0.12
0.51

E
3.0
3.7
3.3
0.35
0.517
3.33
-0.12
0.51

• = No data submitted

TAG SYMBOLS

11 s Above control limit
0 = Insufficient data
v-	
x =
Determined to be an outlier
II s Below control limit
-------
ESD-LV Performance Evaluation: Blind-A, 15-Apr-1997	19 / 30
Radium-228







	\
Lab
Res. 1
Res. 2
Res. 3
Exper.
Rng anal

Normalized deviation

Sigma
(R + SR)
Average
(grand-avg) (known) Tae
EB
2.2
3.1
2.6
0.45
0.665
2.63
-1.64
-1.01

EL
5.3
5.7
3.4
1.23
2.330
4.80
3.05
3.68
It
EO
2.9
3.3
3.2
0.21
0.295
3.13
-0.56
0.07
EB







1 •
EV








- 9.
EX









EB£v









FF\









FJ








: % \ *>>
< >
¦fl"'









FN
1.0
1.4
1.2
0.20
0.295
1.20
-4.74
-4.11
f
GI









GQ
2.7
2.7
2.6
0.06
0.074
2.67
-1.57
-0.94

-GZS"









HI









HK
3.1
3.1
2.9
0.12
0.148
3.03
-0.77
-0.14

HL
3.6
3.1
3.6
0.29
0.369
3.43
0.09
0.72

HP
4.1
4.0
4.0
0.06
0.074
4.03
1.39
2.02

HX"









I
2.6
2.6
3.3
0.40
0.517
2.83
-1.21
-0.58

ID
2.0
2.1
2.2
0.10
0.148
2.10
-2.79
-2.17

IU









J








J
r
JE








¦m'fv
JG








• ' V
JM








\ - \v-
JN









JQ









JS
4.3
4.3
4.4
0.06
0.074
4.33
2.04
2.67

JY
4.2
3.9
4.3
0.21
0.295
4.13
1.61
2.24

K
4.7
4.3
3.3
0.72
1.064
4.10
1.54
2.17

KE









KT








v V -
KX








V, S(.v .
L
2.7
3.3
3.0
0.30
0.443
3.00
-0.85
-0.22

le









LF









r.i>









ijft









LT
2.8
3.2
3.0
0.20
0.295
3.00
-0.85
-0.22

M
3.5
3.4
4.0
0.32
0.443
3.63
0.52
1.15

;lK




























f/*V
MV









• s No data submitted	TAG SYMBOLS	ft s Above control limit
0 = Insufficient data	x = Determined to be an outlier	U s Below control limit
-------
(r
20/30
/— '• ———

ESD-LV Performance Evaluation: Blind-A, 15-Apr-1997

	V
Radium-228








Lab
Res. 1
Res. 2
Res. 3
Exper.
Rng anal

Normalized deviation
Sigma
(R + SR)
Average
(grand-avg) (known) Tae
MY
N
4.7
5.6
3.7
0.95
1.767
4.67
2.76
3.39
•
ft
NA-






\
NA
3.2
2.7
3.4
0.36
0.517
3.10
-0.63
0.00

NJ
3.7
3.6
3.5
0.10
0.148
3.60
0.45
1.08

NK








NO
2.4
2.7
3.0
0.30
0.443
2.70
-1.50
-0.87

NT
3.3
3.4
3.5
0.10
0.148
3.40
0.02
0.65

O
3.6
3.5
2.2
0.78
1.064
3.10
-0.63
0.00

OB








OF
1.9
2.1
2.3
0.20
0.295
2.10
-2.79
-2.17

OM







'zi 4
OS









OX
2.7
2.8
2.9
0.10
0.148
2.80
-1.28
-0.65

OY








* ¦ * V-
P
2.8
1.7
2.8
0.64
0.812
2.43
-2.07
-1.44

PA









PB
4.2
4.6
4.2
0.23
0.295
4.33
2.04
2.67

PD









PG









PM








'*1 1 '
QX
2.1
3.0
2.1
0.52
0.665
2.40
-2.15
-1.52

QY








¦? ~
QZ
3.5
3.7
3.9
0.20
0.295
3.70
0.67
1.30

RD
5.6
3.0
3.8
1.33
2.752
4.13
1.61
2.24

RF








.^2 C
RG








: «.
RI> "









RK
1.6
1.4
2.0
0.31
0.443
1.67
-3.73
-3.10
II
RP








	»y+"wvty;»
RR








~ # ? A
RU









RZ
2.6
2.7
2.9
0.15
0.222
2.73
-1.42
-0.79

S
2.8
2.6
3.8
0.64
0.886
3.07
-0.70
-0.07

sc
3.7
4.2
3.8
0.26
0.369
3.90
1.10
1.73

• = No data submitted	TAG SYMBOLS	ft - Above control limit
0 5 Insufficient data	x = Determined to bean outlier	U = Below control limit
-------
ESD-LV Performance Evaluation: Blind-A, 15*Apr-1997
21 / 30
Radium-228







>
Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation

Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tae
SD
3.1
2.8
3.0
0.15
0.222
2.97
-0.92
-0.29

SF
2.7
3.1
3.6
0.45
0.665
3.13
-0.56
0.07

SG







*+'yt
SI
2.8
2.8
2.6
0.12
0.148
2.73
-1.42
-0.79

M








SM
2.9
4.0
4.1
0.67
0.886
3.67
0.60
1.23

;S»:







X;:
Si








-f
m








"y<+
SS
3.2
4.7
2.5
1.12
2.189
3.47
0.16
0.79

SX
1.8
2.6
3.4
0.80
1.345
2.60
-1.71
-1.08

sz
5.1
6.0
5.8
0.47
0.665
5.63
4.86
5.48
ft
T
3.0
3.4
3.7
0.35
0.517
3.37
-0.05
0.58

TD
6.0
3.2
4.7
1.40
3.033
4.63
2.69
3.32
ft
fm









TL









TN
3.3
3.3
3.4
0.06
0.074
3.33
-0.12
0.51

TQ
3.4
2.9
3.0
0.26
0.369
3.10
-0.63
0.00

w









¦W:









u
2.6
2.5
3.0
0.26
0.369
2.70
-1.50
-0.87

VUA?









UK









UP
3.3
3.1
3.4
0.15
0.222
3.27
-0.27
0.36

UQ
3.6
2.8
3.6
0.46
0.591
3.33
-0.12
0.51

VA
7.4/
&o-
53
1.08
2.049
SE
8 03:
|6T;

VC







5
VH
4.7
4.4
6.7
1.25
2.330
5.27
4.06
4.69
f
VI
4.0
3.9
3.7
0.15
0.222
3.87
1.03
1.66

¦V$









VM









:VO









VT








W
3.4
3.1
3.2
0.15
0.222
3.23
-0.34
0.29

WE









WH
3.0
3.1
3.0
0.06
0.074
3.03
-0.77
-0.14

WO
4.2
4.7
4.3
0.26
0.369
4.40
2.18
2.81

WR
4.2
3.0
2.8
0.76
1.064
3.33
-0.12
0.51

;>WM
,6;4|
7.0
Mm
0;70
1.064
am

7-00
Pi
tilfi







•
-------
22/30
ESD-LV Performance Evaluation: Blind-A, 15-Apr-1997
Radium-228
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
1.20
n
FN
3.07

S
3.67

SM
1.67
ji
RK
3.07

DB
3.67

AW
2.10

OF
3.10

TQ
3.70

QZ
2.10

ID
3.10

O
3.87

VI
2.13

CG
3.10

NH
3.87

c
2.30

AL
3.10

AJ
3.90

SC
2.40

QX
3.13

SF
4.03

HP
2.40

AZ
3.13

BO
4.10

K
2.40

A
3.13

EO
4.13

RD
2.43

P
3.20

BK
4.13

JY
2.60

BC
3.23

W
4.23

AP
2.60

SX
3.23

CE
4.27

CS
2.63

EB
3.23

AH
4.33

PB
2.67

QT
3.27

UP
4.33

JS
2.67

GQ
3.33

WR
4.40

WO
2.70

U
3.33

UQ
4.47

DT
2.70

NO
3.33

TN
4.63
It
TD
2.73

SI
3.33

E
4.63
It
BM
2.73

RZ
3.33

DZ
4.67
It
N
2.77

BA
3.37

T
4.67
ft
AK
2.80

OX
3.37

QU
4.73
It
CA
2.83

I
3.40

Q
4.80
It
EL
2.90

BH
3.40

NT
4.87
ft
CJ
2.97

SD
3.43

HL
5.27
ft
VH
3.00

LT
3.47

SS
5.63
ft
SZ
3.00

L
3.53

AF
5.80
ft
DE
3.00

AE
3.57

PW
6.33
X
X
3.03

WH
3.60

NJ
6.93
X
CC
3.03

HK
3.63

M
7.10
X
VA
% responding labs
Frequency distribution
10-

wjJL'Hijjllil »-Taa
" —
46
-r—
-6
-4	-2	0	+2	+4
Normalized deviation of the mean from the known value
• s No data submitted
0 a Insufficient data
TAG SYMBOLS
x m Determined to be an outlier
ft a Above control limit
JJ. a Below control limit
-------
ESD-LV Performance Evaluation: Blind-A, 15-Apr-1997	23 / 30
Radium-228
% responding labs	Frequency distribution
10-		—		
PnaBflynuHB^«
•6	-4	-2	6	+2	+4	+6
Normalized deviation of the mean from the grand average
-------
ESD-LV Performance Evaluation: Blind-A, 15-Apr-1997
24/30
Uranium (Natural)	Statistical Summary	181 Participants
The known value of this nuclide is 24.0 pCi/1 with an expected precision of 3.0; the control limits
are 18.8 to 29.2; the warning regions are 18.8 to 20.5 and 27.5 to 29.2
70(38.7 %) Failed to respond ;
; 94(51.9 %) Within all limits


---• 7(3.9 %) In warning zone
10(5.5 %) Outliers
^J-Ll I
l I
but within control
Statistic
Respondents
Non-outliers
Mean
26.31
Grand Avg 23.47
Std. Dev.
31.28
1.62
Variance
978.73
2.63
% Coef. of Var.
118.89
6.91
% deviation of mean from known value
9.64
-2.23
Norm. dev. of mean from known value
0.07
-0.33
Median
23.33
23.33
% deviation of median from known value
-2.78
-2.78
Norm. dev. of median from known value
-0.02
-0.41
10(9.0 %) More than 3 norm. S.D.
. 78(70.3 %) Within 1 norm. S.D.
of Known value
7(6.3 %) Between 2 and 3 norm. S.D.'
16(14.4%) Between 1 and 2 norm. S.D.
-------
ESD-LV Performance Evaluation: Blind-A, 15-Apr-1997
Uranium (Natural)
Lab
Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
A
24.8
24.5
24.1
0.35
0.138
24.47
0.58
0.27

AE
24.5
24.6
24.8
0.15
0.059
24.63
0.67
0.37

AF
23.0
25.6
27.5
2.26
0.886
25.37
1.10
0.79

AH
22.2
22.3
22.7
0.26
0.098
22.40
-0.61
-0.92

AJ
23.4
20.3
23.5
1.82
0.630
22.40
-0.61
-0.92

AK
23.6
24.7
26.0
1.20
0.473
24.77
0.75
0.44

AL
26.1
26.8
27.2
0.56
0.217
26.70
1.87
1.56

AP
25.6
28.0
26.4
1.22
0.473
26.67
1.85
1.54

AR
21.6
21.2
21.6
0.23
0.079
21.47
-1.15
-1.46

';Atur;r







AW
23.7
22.5
22.8
0.62
0.236
23.00
-0.27
-0.58

AZ
24.0
22.9
23.5
0.55
0.217
23.47
0.00
-0.31

BA
23.4
23.9
25.4
1.04
0.394
24.23
0.44
0.13

BB
22.7
22.4
22.6
0.15
0.059
22.57
-0.52
-0.83

BC
23.5
23.6
23.3
0.15
0.059
23.47
0.00
-0.31

BG
22.9
23.2
22.6
0.30
0.118
22.90
-0.33
-0.64

BG
24.0
25.0
23.6
0.72
0.276
24.20
0.42
0.12

BG
24.5
24.8
27.0
1.36
0.492
25.43
1.14
0.83

BH
23.7
22.2
22.6
0.78
0.295
22.83
-0.36
-0.67

BK
23.8
23.7
23.7
0.06
0.020
23.73
0.15
-0.15

BL








V;'"
BM
24.3
23.5
22.2
1.06
0.413
23.33
-0.08
-0.38

BN
23.0
29.7
26.2
3.35
1.608
26.30
1.64
1.33

BO
22.4
18.6
18.7
2.17
0.748
19.90
-2.06
-2.37

B8








•
BW









C
22.2
24.1
21.0
1.56
0.610
22.43
-0.60
-0.90

CA
26.6
26.7
27.2
0.32
0.118
26.83
1.94
1.64

CC
80id

nm

(X906
78;20
siM~


CE
23.5
25.0
23.9
0.78
0.295
24.13
0.39
0.08

CG
22.8
24.2
23.7
0.71
0.276
23.57
0.06
-0.25

CJ
24.0
23.0
23.0
0.58
0.197
23.33
-0.08
-0.38

CM








• \
CO
20.2
20.8
21.0
0.42
0.158
20.67
-1.62
-1.92

CP









cs
21.9
21.9
22.4
0.29
0.098
22.07
-0.81
-1.12

cx
27.2
26.3
27.6
0.67
0.256
27.03
2.06
1.75

D
24.4
22.6
23.5
0.90
0.354
23.50
0.02
-0.29

DB
18.5
22.3
19.7
1.94
0.748
20.17
-1.90
-2.21

DD









DE
22.5
22.6
22.7
0.10
0.039
22.60
-0.50
-U.Hl

DI
24.2
23.9
24.1
0.15
0.059
24.07
0.35
0.04

DO
23.3
23.4
22.6
0.44
0.158
23.10
-0.21
-0.52

DS









DT
23.9
22.0
22.7
0.96
0.374
22.87
-0.35
-0.65

• = No data submitted	TAG SYMBOLS	ft s Above control limit
0 = Insufficient data	x = Determined to be an outlier	JJ a Below control limit
-------
C(	
I

ESD-LV Performance Evaluation: Blind-A, 15-Apr-1997
	^
26/30
Uranium (Natural)






*v
Lab
Res. 1
Res. 2
Res. 3
Exper.
Rng anal

Normalized deviation

Sigma
(R + SR)
Average
(grand-avg)
(known) Tae
DZ
21.8
20.8
21.3
0.50
0.197
21.30
-1.25
-1.56

E
24.8
23.2
24.2
0.81
0.315
24.07
0.35
0.04

EB
25.2
26.5
24.7
0.93
0.354
25.47
1.16
0.85

EL
23.5
23.2
23.2
0.17
0.059
23.30
-0.10
-0.40

EOr








ER
25.1
24.8
26.2
0.74
0.276
25.37
1.10
0.79

KV^








ex;:









FE
23.1
22.8
23.3
0.25
0.098
23.07
-0.23
-0.54

'FF;,.










w&

•3#f
0.21

liH
mzm
•lit*?-"

,FI/r



















"ml








v
•' •? r-
GQ
25.2
24.7
26.8
1.10
0.413
25.57
1.21
0.90

jGz:'



















::hk£
nm


' 1-30
0612 V
iBM

-mo.

HL
23.6
19.2
16.5
3.58
1.758
19.77
-2.14
-2.44

HP
22.6
23.8
23.0
0.61
0.236
23.13
-0.19
-0.50

HX









I
25.2
25.7
24.8
0.45
0.177
25.23
1.02
0.71

ID
24.8
22.9
22.7
1.16
0.413
23.47
0.00
-0.31

IU








,m\
J









JE
21.5
24.2
21.8
1.48
0.532
22.50
-0.56
-0.87

JO;









JM;








5S,~~v
t XT
m
iMf
mm
PSS



mm

-m.






J-X

JS
22.6
22.6
23.1
0.29
0.098
22.77
-0.40
-0.71

JY
23.4
21.7
22.8
0.86
0.335
22.63
-0.48
-0.79

K
24.9
19.3
24.7
3.18
1.195
22.97
-0.29
-0.60

w









KT
25.0
26.0
28.0
1.53
0.591
26.33
1.66
1.35

KX









L
22.2
22.9
22.6
0.35
0.138
22.57
-0.52
-0.83

•LB^









LF
23.4
22.3
22.3
0.64
0.217
22.67
-0.46
-0.77

* Vi"
;LL>









til









• lt|









v ¦¦ ' >t; ¦
mt
HH
MiM
0.29

iijb^v!
WW4
mm

:MFVj.







."•A.









vW.*;
• a
No data submitted

TAG SYMBOLS

IT h Above control limit
0 H
Insufficient data
X =
Determined to be an outlier
U ss Below control limit
-------
27/30
ESD-LV Performance Evaluation: Blind-A, 15-Apr-1997
Uranium (Natural)
Lab
Res. 1
Res. 2
Res. 3
Exper.
Rng anal

Normalized deviation

Sigma
(R + SR)
Average
(grand-avg)
(known) Tae
,M



















MY








¦
N
26.4
26.0
26.5
0.26
0.098
26.30
1.64
1.33

NA
24.0
23.0
23.0
0.58
0.197
23.33
-0.08
-0.38

NH
24.4
34.2
26.1
5.24
2.771
28.23
2.75
2.44

NJ
25.1
25.1
25.1
0.01
0.000
25.10
0.94
0.64

NK
21.2
21.6
22.0
0.40
0.158
21.60
-1.08
-1.39

NO
23.8
24.5
25.2
0.70
0.276
24.50
0.60
0.29

•M*:
d
168 ••
liT.eTj

10.85
0336


mm

OB
23.9
23.5
24.2
0.35
0.138
23.87
0.23
-0.08
v •*
OF*







OM









OS
21.7
21.6
22.2
0.32
0.118
21.83
-0.94
-1.25

Ox








OY








y>
P
22.6
23.2
22.7
0.32
0.118
22.83
-0.36
-0.67

PA








PB
22.6
22.3
22.2
0.21
0.079
22.37
-0.63
-0.94

PD








.9
PG
20.0
20.7
20.0
0.40
0.138
20.23
-1.87
-2.17

PM









PQ









PR









PW
14.8
14.8
"MX
0.23
0.079
14:67
-6.08
'09}
it?
Q
211
22.3
24.3
1.62
0.630
22.57
-0.52
-0.83










s










QQ
23.4
24.9
23.9
0.76
0.295
24.07
0.35
0.04

QT









QU
25.8
26.7
24.3
121
0.473
25.60
1.23
0.92

QW;









QX
9.4;
W-
PP
0.23
0.079
. >13


fw
QY
24.5
23.6
23.7
0.49
0.177
23.93
0.27
-0.04

QZ
23.2
23.9
23.5
0.35
0.138
23.53
0.04
-0.27

RD
34610?
WK
n
; o.oo
o:ooo
346.00:
mm
mm
W&-
RF








ISlfe
RG
23.5
22.9
23.7
0.42
0.158
23.37
-0.06
-0.37

HI









RK
24.1
23.7
24.7
0.50
0.197
24.17
0.41
0.10

RP
25.0
24.8
25.6
0.42
0.158
25.13
0.96
0.65

RR
23.8
22.5
24.3
0.93
0.354
23.53
0.04
-0.27

RU








A,- --*
-------
ESD-LV Performance Evaluation: Blind-A, 15-Apr-1997
28/30
Uranium (Natural)
Lab
Res. 1
Res. 2
Res. 3
Exper.
Rng anal

Normalized deviation

Sigma
(R + SR)
Average
(grand-avg)
(known) Tae
S
22.7
22.3
22.3
0.23
0.079
22.43
-0.60
-0.90

SC
24.2
24.1
23.2
0.55
0.197
23.83
0.21
-0.10

SD
23.1
24.0
23.7
0.46
0.177
23.60
0.08
-0.23

SF
23.0
22.3
22.8
0.36
0.138
22.70
-0.44
-0.75

SG







i\f -
SI
24.9
26.0
24.1
0.95
0.374
25.00
0.89
0.58

SL
23.0
27.0
25.0
2.00
0.788
25.00
0.89
0.58

SM
20.4
19.9
20.8
0.45
0.177
20.37
-1.79
-2.10

' SPT;









SO
20.2
19.6
19.9
0.30
0.118
19.90
-2.06
-2.37

.








x+y'
ss
25.4
25.0
24.1
0.67
0.256
24.83
0.79
0.48

sx
22.2
22.8
21.9
0.46
0.177
22.30
-0.67
-0.98

sz
22.1
22.4
21.7
0.35
0.138
22.07
-0.81
-1.12

T
24.8
23.4
21.5
1.66
0.650
23.23
-0.13
-0.44

TD
23.3
23.2
23.4
0.10
0.039
23.30
-0.10
-0.40

TH









TL









TN









TQ
22.1
24.3
24.5
1.33
0.473
23.63
0.10
-0.21

TS








.;+&-*
TY









U
23.5
22.7
22.3
0.61
0.236
22.83
-0.36
-0.67

UA








w
UK









UP
20.5
23.7
24.5
2.12
0.788
22.90
-0.33
-0.64

UQ








?'s
^ ;
VA
41.9
41.2
37,7
2.25
0.827
40:27.:



vc
21.8
22.5
22.0
0.36
0.138
22^10
•0.79
-1.10

VH
25.2
24.3
22.8
1.21
0.473
24.10
0.37
0.06

VI
22.1
22.8
23.0
0.47
0.177
22.63
-0.48
-0.79

VJ









VM









VO
23.0
24.0
23.4
0.50
0.197
23.47
0.00
-0.31

VT









W
22.3
22.6
22.6
0.17
0.059
22.50
-0.56
-0.87

WB








1 <• •
WH
23.8
24.9
21.3
1.84
0.709
23.33
-0.08
-0.38

WO
23.7
23.4
24.0
0.30
0.118
23.70
0.14
-0.17

WR
22.2
22.2
22.7
0.29
0.098
22.37
-0.63
-0.94

WW









X
25.4
23.4
22.2
1.62
0.630
23.67
0.12
-0.19

XA
21.3
21.5
21.5
0.12
0.039
21.43
-1.17
-1.48

XC








"^Vvj
XD









• s No data submitted
0 s Insufficient data
TAG SYMBOLS
x = Determined to be an outlier
ft =s Above control limit
U 3 Below control limit
-------
29/30
ESD-LV Performance Evaluation: Blind-A, 15-Apr-1997
Uranium (Natural)
Lab Res. 1 Res. 2
Exper. Rng anal	Normalized deviation
Res. 3 Sigma (R + SR) Average (grand-avg) (known)
Tag
XF

Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
4.13
X
FJ
22.67

LF
23.87

OB
9.13
X
QX
22.70

SF
23.93

QY
11.87
X
M
22.77

JS
24.07

QQ
12.93
X
JN
22.83

U
24.07

E
14.67
X
PW
22.83

P
24.07

DI
16.03
X
HK
22.83

BH
24.10

VH
17.63
X
NT
22.87

DT
24.13

CE
19.77

HL
22.90

UP
24.17

RK
19.90

SO
22.90

BG
24.20

BG
19.90

BO
22.97

K
24.23

BA
20.17

DB
23.00

AW
24.47

A
20.23

PG
23.07

FE
24.50

NO
20.37

SM
23.10

DO
24.63

AE
20.67

CO
23.13

HP
24.77

AK
21.30

DZ
23.23

T
24.83

SS
21.43

XA
23.30

TD
25.00

SL
21.47

AR
23.30

EL
25.00

SI
21.60

NK
23.33

WH
25.10

NJ
21.83

OS
23.33

NA
25.13

RP
22.07

CS
23.33

CJ
25.23

I
22.07

SZ
23.33

BM
25.37

ER
22.10

vc
23.37

RG
25.37

AF
22.30

sx
23.47

VO
25.43

BG
22.37

PB
23.47

ID
25.47

EB
22.37

WR
23.47

BC
25.57

GQ
22.40

AJ
23.47

AZ
25.60

QU
22.40

AH
23.50

D
26.30

N
22.43

S
23.53

RR
26.30

BN
22.43

c
23.53

QZ
26.33

KT
22.50

w
23.57

CG
26.67

AP
22.50

JE
23.60

SD
26.70

AL
22.57

Q
23.63

TQ
26.83

CA
22.57

L
23.67

X
27.03

CX
22.57

BB
23.70

WO
28.23

NH
22.60

DE
23.73

BK
40.27
X
VA
22.63

VI
23.83

SC
78.20
X
cc
22.63

JY
23.87

RZ
346.00
X
RD

• = No data submitted
0 = Insufficient data
TAG SYMBOLS
x s Determined to be an outlier
ft
a Above control limit
s Below control limit
-------
ESD-LV Performance Evaluation: Blind-A, 15-Apr-1997	30 / 30
Uranium (Natural)
% rpR^nnfjinglabs^^^^	Frequency distribution
10-
-fllty
..|imrMiT..
i	—-»t — t —J"-~~T --— i——	1	1	i	r®
-4	-2	0	+2	+4	+6
Normalized deviation of the mean from the known value
% responding labs	Frequency distribution

iL
10---	-	
JLftf	¦», ,	,	,-SJ
-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-97/067B
Environmental Protection	Development	July 1997
Agency	Washington, DC 20460
Blind-B Performance
Evaluation Study
A Statistical Evaluation of
the April 15, 1997 Data
-------
Blind-B
Performance Evaluation Study
April 15, 1997
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 Bllnd-B; April 15, 1997.
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-B, 15-Apr-1997	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 decrease#. 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, 16-Apr-1997
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^ 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, 15-Apr-1997
3/43
Gross Beta
Statistical Summary
179 Participants
The known value of this nuclide is 102.1 pCi/I with an expected precision of 15.3; the control limits
are 75.6 to 128.6; the warning regions are 75.6 to 84.4 and 119.8 to 128.6
35(19.6 %) Failed to respond \
9(5.0 %) Outliers •'
3( 1.7 %) Out of control •
but not an outlier
Statistic
122(68.2 %) Within all limits
Respondents
10(5.6 %) 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
108.36
118.32
13998.55
109.18
6.14
0.05
98.10
-3.92
-0.03
Grand Avg 97.27
8.94
79.89
9.19
-4.73
-0.54
98.20
-3.82
-0.44
12(8.3 %) More than 3 norm. S.D. •.
10(6.9 %) Between 2 and 3 norm. S.D.'
85(59.0 %) Within 1 norm. S.D.
of known value
37(25.7 %)
»n 1 and 2 norm. S.D.
-------
4/43	ESD-LV Performance Evaluation: Blind-B, 15-Apr-1997
Gross Beta
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
A
97.9
97.0
99.9
1.48
0.112
98.27
0.11
-0.43
AE
88.6
92.0
89.7
1.74
0.131
90.10
-0.81
-1.36
AF
99.5
102.3
102.5
1.68
0.116
101.43
0.47
-0.08
AH
130.0
135.0
113.0
11.53
0.849
126.00
3.25
2.71
AJ
89.1
80.4
82.7
4.51
0.336
84.07
-1.49
-2.04
AK
99.8
97.2
98.6
1.30
0.100
98.53
0.14
-0.40
AL
94.7
93.2
101.6
4.48
0.324
96.50
-0.09
-0.63
AP
94.2
92.6
91.8
1.22
0.093
92.87
-0.50
-1.05
AR
109.7
106.1
105.6
2.24
0.158
107.13
1.12
0.57
AU
86.7
95.9
86.0
5.52
0.382
89.53
-0.88
-1.42
AW
97.3
94.3
94.3
1.73
0.116
95.30
-0.22
-0.77
AZ
104.0
99.8
103.0
2.19
0.162
102.27
0.57
0.02
BA
101.5
101.5
102.2
0.40
0.027
101.73
0.51
-0.04
BB
87.9
84.9
87.4
1.61
0.116
86.73
-1.19
-1.74
BC
93.6
96.2
93.8
1.45
0.100
94.53
-0.31
-0.86
BG
30.0

2816
3.06
0.232
27.33
-7.92
-8.46 X
BH
92.4
92.6
97.8
3.06
0.208
94.27
-0.34
-0.89
BK
98.0
97.0
97.0
0.58
0.039
97.33
0.01
-0.54
:bl-







• -
BM
109.1
105.5
109.5
2.20
0.154
108.03
1.22
0.67
BN
74.3
70.8
76.0
2.65
0.201
73.70
-2.67
-3.22 U
BO
102.0
100.0
107.0
3.61
0.270
103.00
0.65
0.10
BS
105.6
107.0
103.5
1.76
0.135
105.37
0.92
°-37
BW







•
C
102.0
99.7
99.5
1.39
0.097
100.40
0.35
-0.19
CA
97.5
96.5
100.6
2.14
0.158
98.20
0.11
-0.44
CC
678.0
556.0
566.0
10.00
0.772
568.00
53.29
52.74 x
CE
95.0
92.1
91.5
1.87
0.135
92.87
-0.50
-1.05
CG
96.6
96.6
100.8
2.42
0.162
98.00
0.08
-0.46
CJ
100.0
100.0
110.0
5.77
0.386
103.33
0.69
0.14
CM







•
CO
87.3
87.6
92.4
2.86
0.197
89.10
-0.92
-1.47
CP
96.5
93.4
94.7
1.56
0.120
94.87
-0.27
-0.82
C8
91.4
102.0
94.4
5.46
0.409
95.93
-0.15
-0.70
CX
89.4
92.1
96.1
3.37
0.259
92.53
-0.54
-1.08
D
101.3
100.0
103.5
1.77
0.135
101.60
0.49
-0.06
DB
101.0
102.0
98.0
2.08
0.154
100.33
0.35
-0.20
DD
102.0
100.1
96.9
2.58
0.197
99.67
0.27
-0.28
DE
102.3
102.4
102.5
010
0.008
102.40
0.58
0.03
DI







•
DO







•
DS
89.3
87.8
93.3
2.84
0.212
90.13
-0.81
-1.35
DT
118.9
110.8
109.7
5.02
0.355
113.13
1.80
1.25
DZ
86.2
94.0
91.9
4.04
0.301
90.70
-0.74
-1.29
E
96.8
96.7
96.0
0.44
0.031
96.50
-0.09
-0.63
• 3
No data submitted

TAG SYMBOLS

IT s Above control limit
0 5 Insufficient data	x 5 Determined to be an outlier	II s Below control limit
-------
C(	








	X


ESD-LV Performance Evaluation: Blind-B, 15-Apr-1997
5/43
Gross Beta







*
Lab


•
Exper.
Rng anal
.
Normalized deviation

Res. 1
Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
EB
100.4
100.1
97.6
1.54
0.108
99.37
0.24
-0.3 i

w







•
EO
103.0
100.0
106.0
3.00
0.232
103.00
0.65
0.10

SER?








" •
EV
103.6
107.9
104.5
2.27
0.166
105.33
0.91
0.37

EX
93.7
104.8
95.4
5.98
0.429
97.97
0.08
-0.47

FE
93.3
93.1
92.5
0.42
0.031
92.97
-0.49
-1.03

FF
97.6
101.1
102.1
2.36
0.174
100.27
0.34
-0.21

FJ
98.1
85.0
87.6
6.94
0.506
90.23
-0.80
-1.34



pippi
tS&Oil
in
0.085
•Sfcas:
>6.31
>6;86
X
utatr

xiMM
1411.0
35.44
3.875
1427,33
160,67
160.02
X









• *
GQ
112.0
102.0
97.7
7.34
0.552
103.90
0.75
0.20

GZ
89.8
93.6
94.2
2.39
0.170
92.53
-0.54
-1.08

m
93.0
89.0
85.0
4.00
0.309
89.00
-0.94
-1.48

HK
104.8
105.4
106.7
0.97
0.073
105.63
0.95
0.40

HL
86.6
83.2
81.8
2.47
0.185
83.87
-1.52
-2.06

HP
95.8
105.0
110.0
7.20
0.548
103.60
0.72
0.17

Ht








. •
I
112.1
106.1
115.8
4.90
0.374
111.33
1.59
1.05

ID
93.0
92.3
91.8
0.60
0.046
92.37
-0.55
-1.10

ni








m
j;








•
JE
101.1
97.9
103.7
2.90
0.224
100.90
0.41
-0.14

JG








•
JM
96.6
95.9
98.8
1.51
0.112
97.10
-0.02
-0.57

JN
97.9
93.0
99.2
3.27
0.239
96.70
-0.06
-0.61

vJQ
I38<1

12*7
4.10
0.278
134;43
4*21
3.66
X
J8


41,4
2.65
0.189
39.53
-6.54
-7.08
X
JY
84.5
91.5
89.2
3.57
0.270
88.40
-1.00
-1.55

K
67.9
68.3
67.7
0.30
0.023
67.97
-3.32
-3.86
a
KE
105.4
106.0
105.3
0.38
0.027
105.57
0.94
0.39

KT
100.0
102.0
105.0
2.52
0.193
102.33
0.57
0.03

KX
108.0
111.0
108.0
1.73
0.116
109.00
1.33
0.78

L
97.1
95.5
99.5
2.01
0.154
97.37
0.01
-0.54

LE
91.0
85.2
94.4
4.65
0.355
90.20
-0.80
-1.35

LF
82.0
85.0
82.0
1.73
0.116
83.00
-1.62
-2.16

LL
93.4
99.2
88.0
5.60
0.432
93.53
-0.42
-0.97

LA
108.0
105.6
117.1
6.07
0.444
110.23
1.47
0.92

LT
99.4
94.4
98.1
2.59
0.193
97.30
0.00
-0.54

M
93.0
92.0
92.0
0.58
0.039
92.33
-0.56
-1.11

MF
99.0
101.0
100.9
1.13
0.077
100.30
0.34
-0.20

r.wopf

















•
MV
92.0
87.0
92.0
2.89
0.193
90.33
-0.78
-1.33

• =
No data submitted

TAG SYMBOLS

IT s Above control limit
0 3
V1
Insufficient data
X s
Determined to be an outlier
JJ = Below control limit
			
-------
6/43	ESD-LV Performance Evaluation: Blind-B, 15-Apr-1997
Gross Beta
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
MY







•
N
103.0
102.9
103.9
0.55
0.039
103.27
0.68
0.13
NA
114.0
114.0
110.0
2.31
0.154
112.67
1.74
1.20
NH
112.0
106.0
104.0
4.16
0.309
107.33
1.14
0.59
NJ
91.1
92.8
93.4
1.19
0.089
92.43
-0.55
-1.09
NK
95.0
94.8
97.0
1.22
0.085
95.60
-0.19
-0.74
NO
87.9
92.9
94.3
3.36
0.247
91.70
-0.63
-1.18
NT
104.2
103.8
103.4
0.40
0.031
103.80
0.74
0.19
O
94.8
105.0
102.8
5.37
0.394
100.87
0.41
-0.14
OB
97.0
98.0
98.0
0.58
0.039
97.67
0.05
-0.50
OF
74.9
79.8
78.8
2.59
0.189
77.83
-2.20
-2.75
OM







•
OS
98.0
98.0
100.0
1.15
0.077
98.67
0.16
-0.39
ox
105.6
110.5
107.2
2.50
0.189
107.77
1.19
0.64
.Tor;







•
p
80.0
90.1
97.8
8.93
0.687
89.30
-0.90
-1.45
PA







•
FB
102.8
104.5
103.7
0.85
0.066
103.67
0.72
0.18
PD
117,6 .
iseX
4130,4
10.83
0.726
130.10
8.72
3.17 x
PG
103.6
101.0
103.5
1.47
0.100
102.70
0.62
0.07
PM
109.2
1023
102.6
3.90
0.266
104.70
0.84
0.29
PQ







•
PR
78.6
77.0
73.6
2.55
0.193
76.40
-2.36
-2.91
PW







•
Q
103.5
102.6
99.9
1.87
0.139
102.00
0.54
-0.01
QM
96.6
91.5
94.2
2.55
0.197
94.10
-0.36
-0.91
QP
103.8
92.7
95.3
5.81
0.429
97.27
0.00
-0.55
QQ
100.8
97.0
99.0
1.90
0.147
98.93
0.19
-0.36
QT
100.0
105.2
102.6
2.60
0.201
102.60
0.60
0.06
QU
98.0
99.1
100.5
1.25
0.097
99.20
0.22
-0.33
QW
101.3
97.8
97.4
2.15
0.151
98.83
0.18
-0.37
ox
113.0
113.4
112.6
0.40
0.031
113.00
1.78
1.23
QY







•
QZ
109.2
110.0
107.8
1.11
0.085
109.00
1.33
0.78
RD
105.0
94.9
96.3
5.47
0.390
98.73
0.17
-0.38
RF







•
RG
97.7
92.9
90.6
3.62
0.274
93.73
-0.40
-0.95
RI
106.6
105.6
113.9
4.53
0.320
108.70
1.29
0.75
RK
81.9
78.6
83.8
2.63
0.201
81.43
-1.79
-2.34
RP







•
RR
123.0
121.0
121.0
1.15
0.077
121.67
2.76
2.22
RU







' •
RZ
92.7
90.8
97.0
3.18
0.239
93.50
-0.43
-0.97
S
105.5
105.2
100.1
3.03
0.208
103.60
0.72
0.17
8C
92.6
102.9
82.6
10.15
0.784
92.70
-0.52
-1.06
• =
I®-
No data submitted
Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
IT = Above control limit
li = Below control limit
	v
-------
f	^
ESD-LV Performance Evaluation: Blind-B, 15-Apr-1997	7/43
^	J
Gross Beta
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
SD
92.2
100.9
104.5
6.32
0.475
99.20
0.22
-0.33

SF
85.3
92.3
99.3
7.00
0.540
92.30
-0.56
-1.11

"SG?


65;4
5.10
0.374
63.51
•3.81
-4.36
X
SI
78.7
89.5
92.1
7.11
0.517
86.77
-1.19
-1.74

SL
97.0
100.0
98.0
1.53
0.116
98.33
0.12
-0.43

SM
92.8
93.4
89.7
1.99
0.143
91.97
-0.60
-1.15

SN
101.8
100.6
100.8
0.64
0.046
101.07
0.43
-0.12

SO
81.8
79.5
77.3
2.25
0.174
79.53
-2.01
-2.55

f'SRl
32*
32»
Mi
0.67
0.050
32.07
>7,28
•7.83
X
88
92.9
85.8
93.6
4.32
0.301
90.77
-0.74
-1.28

SX
121.0
91.9
103.0
14.69
1.235
105.30
0.91
0.36

sz
89.3
92.3
94.6
2.66
0.205
92.07
-0.59
-1.14

T
96.5
97.2
103.5
3.86
0.270
99.07
0.20
-0.34

TD
100.3
93.6
81.4
9.58
0.730
91.77
-0.62
-l-17










s •
-MS?"









TN
73.4
76.9
73.4
2.02
0.135
74.57
-2.57
-3.12

TQ
104.0
111.0
112.0
4.36
0.309
109.00
133
0.78










•
TY
104.0
106.0
104.0
1.15
0.077
104.67
0.84
0.29

U
104.4
105.4
104.1
0.68
0.050
104.63
0.83
0.29

UA
97.0
99.0
100.0
1.53
0.116
98.67
0.16
-0.39










•
UP
88.5
90.0
90.6
1.08
0.081
89.70
-0.86
-1.40

UQ
101.0
98.0
100.0
1.53
0.116
99.67
0.27
-0.28










•
yc








•
VH
89.7
88.0
81.4
4.38
0.320
86.37
-1.23
-1.78

VI
85.2
84.2
87.4
1.64
0.124
85.60
-1.32
-1.87

VJ
100.0
111.0
104.0
5.57
0.425
105.00
0.88
0.33

VM








•
VO
86.2
81.0
85.9
2.92
0.201
84.37
-1.46
-2.01

Vt








•
W
102.0
100.0
95.4
3.38
0.255
99.13
0.21
-0.34

WE
115.1
104.6
107.3
5.45
0.405
109.00
1.33
0.78

WH
99.4
102.0
101.0
1.31
0.100
100.80
0.40
-0.15

WO
91.7
82.6
87.0
. 4.55
0.351
87.10
-1.15
-1.70

WR
90.4
93.0
94.4
2.03
0.154
92.60
-0.53
-1.08

WW
96.5
93.5
101.2
3.88
0.297
97.07
-0.02
-0.57

X
106.5
103.0
100.6
2.97
0.228
103.37
0.69
0.14

XA








' • ¦
' XC •••









XD








-•
XF
95.6
93.4
98.4
2.51
0.193
95.80
-0.17
-0.71

• S No data submitted	TAG SYMBOLS	ft = Above control limit
0 s Insufficient data	x = Determined to be an outlier	Ji a Rplnw mnt.ml limit,
		11
-------
ft	







	
8/43
ESD-LV Performance Evaluation: Blind-B,
15-Apr-1997


Gross Beta










Data sorted by Laboratory Averag
re


Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
27.33
X
BG
92.60

WR
100.27

FF
32.97
X
SR
92.70

SC
100.30

MF
39.53
X
JS
92.87

CE
100.33

DB
50.33
X
FL
92.87

AP
100.40

C
63.57
X
SG
92.97

FE
100.80

WH
67.97

K
93.50

RZ
100.87

O
73.70

BN
93.53

LL
100.90

JE
74.57

TN
93.73

RG
101.07

SN
76.40

PR
94.10

QM
101.43

AF
77.83

OF
94.27

BH
101.60

D
79.53

SO
94.53

BC
101.73

BA
81.43

RK
94.87

CP
102.00

Q
83.00

LF
95.30

AW
102.27

AZ
83.87

HL
95.60

NK
102.33

KT
84.07

AJ
95.80

XF
102.40

DE
84.37

VO
95.93

CS
102.60

QT
85.60

VI
96.50

E
102.70

PG
86.37

VH
96.50

AL
103.00

EO
86.73

BB
96.70

JN
103.00

BO
86.77

SI
97.07

WW
103.27

N
87.10

WO
97.10

JM
103.33

CJ
88.40

JY
97.27

QP
103.37

X
89.00

HI
97.30

LT
103.60

S
89.10

CO
97.33

BK
103.60

HP
89.30

P
97.37

L
103.67

PB
89.53

AU
97.67

OB
103.80

NT
89.70

UP
97.97

EX
103.90

GQ
90.10

AE
98.00

CG
104.63

U
90.13

DS
98.20

CA
104.67

TY
90.20

LE
98.27

A
104.70

PM
90.23

FJ
98.33

SL
105.00

VJ
90.33

MV
98.53

AK
105.30

sx
90.70

DZ
98.67

UA
105.33

EV
90.77

ss
98.67

OS
105.37

BS
91.70

NO
98.73

RD
105.57

KE
91.77

TD
98.83

QW
105.63

HK
91.97

SM
98.93

QQ
107.13

AR
92.07

sz
99.07

T
107.33

NH
92.30

SF
99.13

W
107.77

OX
92.33

M
99.20

SD
108.03

BM
92.37

ID
99.20

QU
108.70

RI
92.43

NJ
99.37

EB
109.00

WE
92.53

GZ
99.67

UQ
109.00

TQ
92.53

CX
99.67

DD
109.00

QZ
• = No data submitted

TAG SYMBOLS

It S
Above control limit
0 = Insufficient data
	

x = Determined to be an outlier

Below control limit
		
-------
ESD-LV Performance Evaluation: Blind-B, 15-Apr-1997
9/43
Gross Beta
Data sorted by Laboratory Average
Average	Tag	Lab Average	Tag	Lab Average
Tag_
Lab
109.00
110.23
111.33
112.67
KX
LR
I
NA
113.00
113.13
121.67
126.00
QX
DT
RR
AH
130.10
134.43
568.00
1427.33
x
x
X
X
PD
JQ
CC
FN
% responding labs	Frequency distribution
10-

!¦	¦ I	I	I '
-6	-4-2	0+2+4+6
Normalized deviation of the mean from the known value
% responding labs	Frequency distribution
10-

H		i	1 ¦ ¦ i '"T	.	^
•6	-4	-2	0+2+4
Normalized deviation of the mean from the grand average
• = No data submitted	TAG SYMBOLS	ft = Above control limit
1 0 s Insufficient data	x a Determined to be an outlier	II a Below control limit
^			-v
-------
fr1
ESD-LV Performance Evaluation: Blind-B, 15-Apr-1997
10/43
Strontium-89	Statistical Summary	179 Participants
The known value of this nuclide is 24.0 pCi/1 with an expected precision of 5.0; the control limits
are 15.3 to 32.7; the warning regions are 15.3 to 18.2 and 29.8 to 32.7
106(59.2 %) Failed to respond,
5(2.8 %) Outliers
1 (0.6 %) Out of control
but not an outlier
Statistic
; 62(34.6 %) Within all limits
Respondents
% 5(2.8 %) 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
24.54
5.32
28.35
21.70
2.25
0.10
24.00
0.00
0.00
Grand Avg 24.18
3.02
9.11
12.49
0.74
0.06
24.00
0.00
0.00
6(8.2 %) More than 3 norm. S.D. ,
5(6.8 %) Between 2 and 3 norm. S.D.
,49(67.1 %) Within 1 norm. S.D.
of known value
13(17.8 %) Between 1 and 2 norm. S.D.
-------
(?	








	
11/43
ESD-LV Performance Evaluation: Blind-B, 15-Apr-1997


'
Strontium-89







""
Lab



Exper.
Rng anal

Normalized deviation

Res. 1
Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
A
24.0
23.0
22.0
1.00
0.236
23.00
-0.41
-0.35

AE
26.0
25.0
24.0
1.00
0.236
25.00
0.29
0.35

AF
26.0
26.0
27.0
0.58
0.118
26.33
0.75
0.81

AH
28.0
27.0
26.0
1.00
0.236
27.00
0.98
1.04

la*
48l<£

49.0
0.68
0:118
48,67
8:48
8.54
X
AK
24.0
23.0
24.0
0.58
0.118
23.67
-0.18
-0.12

AL
24.0
28.0
26.0
2.00
0.473
26.00
0.63
0.69

ckp'









Ar








•
AU
35.0
33.0
31.0
2.00
0.473
33.00
3.06
3.12
ir
AW
23.0
24.0
25.0
1.00
0.236
24.00
-0.06
0.00

AZ
26.0
25.0
23.0
1.53
0.354
24.67
0.17
0.23

BA
29.0
31.0
29.0
1.15
0.236
29.67
1.90
1.96

BB








•
BC
22.0
21.0
21.0
0.58
0.118
21.33
-0.98
-0.92

BG








•4
BH
30.0
31.0
30.0
0.58
0.118
30.33
2.13
2.19

BK








•
BL
25.0
24.0
27.0
1.53
0.354
25.33
0.40
0.46

BM
19.0
23.0
24.0
2.65
0.591
22.00
-0.75
-0.69

BN








•
BO
29.0
27.0
27.0
1.15
0.236
27.67
1.21
1.27

BS








•
BW








•
C
26.0
26.0
25.0
0.58
0.118
25.67
0.52
0.58

CA
22.0
22.0
20.0
1.15
0.236
21.33
-0.98
-0.92

CC
11:0
- 9.0
11,0
1.15
0.236
10.33
-4.80
-4.73
X
CE








•
CG
22.0
26.0
23.0
2.08
0.473
23.67
-0.18
-0.12

CJ
22.0
23.0
24.0
1.00
0.236
23.00
-0.41
-0.35

CM








•
CO








•
CP
18.0
27.0
23.0
4.51
1.120
22.67
-0.52
-0.46

cs
21.0
19.0
23.0
2.00
0.473
21.00
-1.10
-1.04

cx
21.0
22.0
23.0
1.00
0.236
22.00
-0.75
-0.69

D
25.0
20.0
21.0
2.65
0.591
22.00
-0.75
-0.69

DB








*
DD
27.0
29.0
24.0
2.52
0.591
26.67
0.86
0.92

DE
23.0
23.0
23.0
0.00
0.000
23.00
-0.41
-0.35

DI








•
DO
25.0
29.0
26.0
2.08
0.473
26.67
0.86
0.92

DS









DT
25.0
25.0
25.0
0.00
0.000
25.00
0.29
0.35

DZ
25.0
27.0
26.0
1.00
0.236
26.00
0.63
0.69

E
24.0
24.0
23.0
0.58
0.118
23.67
-0.18
-0.12

• =
No data submitted

TAG SYMBOLS

ft a Above control limit
0 s
V-	
Insufficient data
X £
Determined to be an outlier
U = Below control limit
	0
-------
(?	







	?v


ESD-LV Performance Evaluation: Blind-B, 15-Apr-1997
12/43
Strontium-89






\
Lab



Exper.
Rng anal

Normalized deviation
Res. 1
Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
EB
26.0
28.0
20.0
4.16
0.945
24.67
0.17
0.23
el
26.0
25.0
22.0
2.08
0.473
24.33
0.05
0.12
Sk<£








;.:KE:







•
'~BV"








00
"y*







FE
26.0
25.0
26.0
0.58
0.118
25.67
0.52
0.58
-FF?








JFJi
















•









i&Hit








GQ
23.0
19.0
21.0
2.00
0.473
21.00
-1.10
-1.04








. •
?m§







•
HK
19.0
19.0
20.0
0.58
0.118
19.33
-1.68
-1.62
- nj»
i.' /¦'/..
HP
^nrfe
36.0>
Pf)^
8&0.
1.00
0.236
36.00
4.10
4.16 y
- 'UAv
I
27.0
26.0
24.0
1.53
0.354
25.67
0.52
0.58
••'tD....







•
IU







•
r«r:f:







•
JE
22.0
16.0
25.0
4.58
1.120
21.00
-1.10
-1.04
«JG







•
ilM







•
JN







•
JQ







*
JS
25.0
23.0
26.0
1.53
0.354
24.67
0.17
0.23
JY
20.0
20.0
17.0
1.73
0.354
19.00
-1.79
-1.73
K
26.0
26.0
27.0
0.58
0.118
26.33
0.75
0.81
KE







•
KT







• .
KX







•

ii.0
100
io.o
0.68
0.118
10.33
-4.80
4,73 x
I3t







•
LF
27.0
25.0
26.0
1.00
0.236
26.00
0.63
069
lir







•
LR







., • ¦
LT
19.0
17.0
17.0
1.15
0.236
17.67
-2.26
-2.19
M
20.0
20.0
21.0
0.58
0.118
20.33
-1.33
-1.27
MF







, •
MP







*>
_ •
t"MT:
**,






•
«MV<








• 5
No data submitted

TAG SYMBOLS

ft s Above control limit
0 —
^	
Insufficient data
X 3
Determined to be an outlier
U = Below control limit
-------
13/43

ESD-LV Performance Evaluation: Blind-B, 15-Apr-1997

r
Strontium-89







Lab



Exper.
Rng anal

Normalized deviation
Res. 1
Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known)'Tag
;-MT







• •'
N
24.0
25.0
25.0
0.58
0118
24.67
0.17
0.23
mMi







•
ilNDHT?








NJ
24.0
24.0
24.0
0.00
0.000
24.00
-0.06
0.00
















•
NT
29.0
30.0
31.0
1.00
0.236
30.00
2.02
2.08
O k:








im








OF


























ox
















•

















•
PB
24.0
25.0
24.0
0.58
0.118
24^33
0.05
0.12
«\Jrl/v;








':RZ :








8
24.0
24.0
24.0
0.00
0.000
24.00
-0.06
0.00
sc
20.0
19.0
18.0
1.00
0.236
19.00
-1.79
-1.73
• s No data submitted	TAG SYMBOLS	ft = Above control limit
0 s Insufficient data	x & Determined to be an outlier	II = Below control limit
^			-y
-------
(f	







	
k.

ESD-LV Performance Evaluation: Blind-B, 15-Apr-1997
14/43
Strontium-89







Lab
Res. 1


Exper.
Rng anal

Normalized deviation
Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
SD
23.0
23.0
18.0
2.89
0.591
21.33
-0.98
-0.92
SF
22.0
18.0
25.0
3.51
0.827
21.67
-0.87
-0.81
SG







!; ft ,
SI
27.0
32.0
20.0
6.03
1.795
26.33
0.75
081








'V • -
SM
32.0
280
30.0
2.00
0.473
30.00
2.02
2.08
g 2 g















SS
22.0
20.0
21.0
1.00
0.236
21.00
-1.10
-1.04









SZ
23.0
23.0
19.0
2.31
0.473
21.67
-0.87
-0.81
T
22.0
24.0
24.0
1.15
0.236
23.33
-0.29
-0.23


MM
47 0
7.81
2.245
42.00
6.17
6.24 x
•w'







•
/&L-








>TN







,.«>
TQ
21.0
24.0
20.0
2.08
0.473
21.67
-0.87
-0.81
¦IB:;








;:*rr.r







•








•
UA








;vUK:.







•
UP
26.0
27.0
23.0
2.08
0.473
25.33
0.40
0.46
•lV*







•
•
yc








VH
21.0
23.0
22.0
1.00
0.236
22.00
-0.75
-0.69
VI
23.0
24.0
24.0
0.58
0.118
23.67
-0.18
-0.12
VJ







•
VM







•
vo
26.0
30.0
27.0
2.08
0.473
27.67
1.21
127
VT








W
21.0
25.0
25.0
2.31
0.473
23.67
-0.18
-0.12
Wfi








. WH
















•
'^tk(








: ww^








X
29.0
30.0
29.0
0.58
0.118
29.33
1.79
1.85
•*Ar-
















•








0
;;xfI








• = No data submitted

TAG SYMBOLS

ft s Above control limit
1 0s Insufficient data
X 3
Determined to be an outlier
= Below control limit
¦V
-------
15/43
ESD-LV Performance Evaluation: Blind-B, 15-Apr-1®97
Strontium-89
Data sorted by Laboratory Average
Average Tag
Lab
Average
Tag Lab
Average
Tag
Lab
10.33 x
L
23.00
CJ
25.67

RR
10.33 x
CC
23.00
A
25.67

I
17.67
LT
23.33
T
25.67

FE
18.00
QZ
23.67
W
25.67

C
19.00
SC
23.67
VI
26.00

QW
19.00
JY
23.67
QM
26.00

LF
19.33
HK
23.67
E
26.00

DZ
20.33
M
23.67
CG
26.00

AL
21.00
88
23.67
AK
26.33

SI
21.00
JE
24.00
S
26.33

K
21.00
GQ
24.00
QU
26.33

AF
21.00
CS
24.00
NJ
26.67

DO
21.33
SD
24.00
AW
26.67

DD
21.33
CA
24.33
PB
27.00

AH
21.33
BC
24.33
EL
27.67

VO
21.67
TQ
24.67
N
27.67

BO
21.67
SZ
24.67
JS
29.33

X
21.67
SF
24.67
EB
29.67

BA
22.00
VH
24.67
AZ
30.00

SM
22.00
D
25.00
Q
30.00

NT
22.00
CX
25.00
DT
30.33

BH
22.00
BM
25.00
AE
33.00
ft
AU
22.67
CP
25.33
UP
36.00
X
HP
23.00
DE
25.33
BL
42.00
X
TD




48.67
X
AJ
% responding labs

Frequency distribution



10-
0J—r-
-6
% responding labs
10-
l.lllltll... -f.'
—i—
+6
-4
Normalized deviation of the mean from the known value
Frequency distribution
-4	-2	0	+2	+4
Normalized deviation of the mean from the grand average
• = No data submitted	TAG SYMBOLS	ft = Above control limit
0 = Insufficient data	x s Determined to be an outlier	11 s Below control limit J
-------
E8D-LV Performance Evaluation: Blind-B, 15-Apr-1997
16/43
Strontium-90
Statistical Summary
179 Participants
The known value of this nuclide is 13.0 pCi/1 with an expected precision of 5.0; the control limits
are 4.3 to 21.7; the warning regions are 4.3 to 7.2 and 18.8 to 21.7
101 (56.4 %) Failed to respond •
, 77(43.0 %) Within all limits
Statistic
Respondents
*-» 1 (0.6 %) In warning zone
but within control
Non-outliers
Mean
12.52
Grand Avg 12.52
Std. Dev.
1.78
1.78
Variance
3.18
3.18
% Coef. of Var.
14.25
14.25
% deviation of mean from known value
-3.71
-3.71
Norm. dev. of mean from known value
-0.27
-0.27
Median
12.33
12.33
% deviation of median from known value
-5.13
-5.13
Norm. dev. of median from known value
-0.37
-0.37
. 70(89.7 %) Within 1 norm. S.D.
•	of known value
'%•> Z.'7,
/' s~	>'V»	™
r;
-------
17/43	E8D-LV Performance Evaluation: Blind-B, 15-Apr-1997

Strontium-90
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
A
12.0
12.0
13.0
0.58
0.118
12.33
-0.06
-0.23
AE
12.0
12.0
12.0
0.00
0.000
12.00
-0.18
-0.35
AF
11.0
12.0
12.0
0.58
0.118
11.67
-0.29
-0.46
AH
14.0
14.0
14.0
0.00
0.000
14.00
0.51
0.35
AJ
10.0
11.0
10.0
0.58
0.118
10.33
-0.76
-0.92
AK
13.0
14.0
14.0
0.58
0.118
13.67
0.40
0.23
AL
12.0
13.0
13.0
0.58
0.118
12.67
0.05
-0.12
AP







•
• AR







. •
AU
12.0
12.0
10.0
1.15
0.236
11.33
-0.41
-0.58
AW
14.0
14.0
14.0
0.00
0.000
14.00
0.51
0.35
AZ
13.0
13.0
14.0
0.58
0.118
13.33
0.28
0.12
BA
11.0
10.0
11.0
0.58
0.118
10.67
-0.64
-0.81
BB
10.0
11.0
10.0
0.58
0.118
10.33
-0.76
-0.92
BC
13.0
13.0
13.0
0.00
0.000
13.00
0.17
0.00
BG
20.0
19.0
19.0
0.58
0.118
19.33
2.36
2.19
BH
11.0
12.0
12.0
0.58
0.118
11.67
-0.29
-0.46
BK







•
BL
13.0
13.0
11.0
1.15
0.236
12.33
-0.06
-0.23
BM
17.0
14.0
13.0
2.08
0.473
14.67
0.74
0.58
BN







•
BO
10.0
110
12.0
100
0.236
11.00
-0.53
-0.69
B8







•
BW







•
C
13.0
13.0
12.0
0.58
0.118
12.67
0.05
-0.12
CA
12.0
13.0
13.0
0.58
0.118
12.67
0.05
-0.12
CC
18.0
18.0
18.0
0.00
0.000
18.00
1.90
1.73
CE
13.0
13.0
13.0
0.00
0.000
13.00
0.17
0.00
CG
13.0
13.0
15.0
1.15
0.236
13.67
0.40
0.23
CJ
12.0
12.0
14.0
1.15
0.236
12.67
0.05
-0.12
CM







•
CO
14.0
15.0
16.0
1.00
0.236
15.00
0.86
0.69
CP
15.0
15.0
15.0
0.00
0.000
15.00
0.86
0.69
CS
14.0
15.0
15.0
0.58
0.118
14.67
0.74
0.58
CX
14.0
13.0
14.0
0.58
0.118
13.67
0.40
0.23
D
14.0
13.0
12.0
1.00
0.236
13.00
0.17
0.00
DB







•
DD
12.0
11.0
12.0
0.58
0.118
11.67
-0.29
-0.46
DE
14.0
14.0
14.0
0.00
0.000
14.00
0.51
0.35
DI







•
DO
10.0
110
110
0.58
0.118
10.67
-0.64
-0.81
DS







•
DT
13.0
12.0
13.0
0.58
0.118
12.67
0.05
-0.12
DZ
15.0
17.0
18.0
1.53
0.354
16.67
1.44
1.27
E
13.0
13.0
13.0
0.00
0.000
13.00
0.17
0.00
• s No data submitted	TAG SYMBOLS	IT = Above control limit
I 0 a Insufficient data	x = Determined to be an outlier	11 = Below control limit
-------
		

ESD-LV Performance Evaluation: Blind-B, 15-Apr>1907
	X
18/43
f - - -
Stroii tium-90






'
Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
EB
10.0
13.0
11.0
1.53
0.354 *
11.33
-0.41
-0.58
EL
11.0
11.0
11.0
0.00
0.000
11.00
-0.53
-0.69
Edr;








¦*mk







•
•>EV>








FE
14.0
15.0
14.0
0.58
0.118
14.33
0.63
•
046
FF'







•








•
A*V
IJPpg







* •
^fnS:








¦Ctt








GQ
12.0
13.0
14.0
1.00
0.236
13.00
0.17
o.oo
"6Z;5







•
r*Hl v








HK
14.0
15.0
14.0
0.58
0.118
14.33
0.63
0.46
::fiDL'"'v








HP
/jit*?;
11.0
13.0
15.0
2.00
0.473
13.00
0.17
0.00
*JL/»
I
11.0
12.0
11.0
0.58
0.118
11.33
-0.41
-0.58








•
^nl--







•
:x'»
¦/'.itfY'-i'.,'-;








JE
9.0
14.0
10.0
2.65
0.591
11.00
-0.53
¦°-69
JM







•
•
ON







•
JQ







*
JS
13.0
14.0
13.0
0.58
0.118
13.33
0.28
0.12
JY
13.0
13.0
13.0
0.00
0.000
13.00
0.17
0.00
K
120
12.0
11.0
0.58
0118
11.67
-0.29
-0.46
KB








KT







•
CT -







•
L
12.0
12.0
12.0
0.00
0.000
12.00
-0.18
-0.35
le "







«•-
LF
10.0
10.0
10.0
0.00
0.000
10.00
-0.87
-1.04
-' I»T.'/







^ •'
Lit








LT
10.0
9.0
8.0
1.00
0.236
9.00
-1.22
-1.39
M
12.0
12.0
11.0
0.58
0.118
11.67
-0.29
-0.46
MF







•
;MP







•
Mf







•
MV







.• ¦
• H
tfo data submitted

TAG SYMBOLS

ft = Above control limit

Insufficient data
x =
Determined to be an outlier
U = Below control limit
		0
-------
ft	






	
19/43
ESD-LV Performance Evaluation: Blind-B, 15-Apr-1997
r
Strontium-90





*



•
Exper.
Rng anal

Normalized deviation
Lab
Res. 1
Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg) (known) Tag
JHY-»







N
14.0
14.0
13.0
0.58
0.118
13.67
0.40 0.23
m;






•
NH







NJ
10.0
10.0
10.0
0.00
0.000
10.00
-0.87 -1.04
oOT
m






ft
*
NT
11.0
12.0
13.0
1.00
0.236
12.00
-0.18 -0.35







•
lio®-'






•
§>*A.






•
*0M;







*da..






•
OX






•
OY






9
P







PA






•
PB
14.0
13.0
14.0
0.58
0.118
13.67
0.40 0.23
PD














•
PM






•








PR






•
•rFW






•
Q
11.0
12.0
13.0
1.00
0.236
12.00
-0.18 -0.35
QM
12.0
11.0
10.0
1.00
0.236
11.00
-0.53 -0.69
OP






•
QQ







QT






•
QU
9.0
10.0
11.0
1.00
0.236
10.00
-0.87 -1.04
QW
13.0
11 0
11.0
115
0.236
11.67
-0.29 -0.46
QX






•







•
QZ
11.0
11.0
11.0
0.00
0.000
11.00
-0.53 -0.69
BD







: RF






•
JUS







;:bi^
' ioinr ^







ISA.
vBP";






•
RR
120
12.0
13.0
0.58
0.118
12.33
-0.06 -0.23
RU
•





•
•;BXC






- • ¦
s
10.0
11.0
12.0
1.00
0.236
11.00
-0.53 -0.69
8C
12.0
12.0
13.0
0.58
0.118
12.33
-0.06 -0.23
• =
No data submitted

TAG SYMBOLS

1T = Above control limit
0 =
Insufficient data
x =
Determined to be an outlier
U s Below control limit
v	






		v
-------
ff	







	^


ESD-LV Performance Evaluation: Blind-B, 15-Apr-1997
20/43
Strontium-90







Lab



Exper.
Rng anal

Normalized deviation
Res. 1
Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
SD
13.0
11.0
13.0
1.15
0.236
12.33
-0.06
-0.23
SF
14.0
15.0
12.0
1.53
0.354
13.67
0.40
0.23









si
10.0
10.0
12.0
1.15
0.236
10.67
-0.64
-0.81
:'8L;







•
SM
11.0
11.0
13.0
1.15
0.236
11.67
-0.29
-0.46
'.•SNf








SO







•
8R







•
ss
13.0
14.0
13.0
0.58
0.118
13.33
0.28
0.12
BSCr







'
sz
13.0
12.0
13.0
0.58
0.118
12.67
0.05
-0.12
T
12.0
12.0
12.0
0.00
0.000
12.00
-0.18
-0.35
TD
9.0
8.0
10.0
1.00
0.236
9.00
-1.22
-i.39
SPK







•








;™V
TQ
14.0
12.0
14.0
1.15
0.236
13.33
0.28
012


























•
UA







•
UK








UP
11.0
12.0
12.0
0.58
0.118
11.67
-0.29
-0.46
UQ-







•
-y'k:








vc







•'
VH
14.0
14.0
14.0
0.00
0.000
14.00
0.51
0.35
VI
11.0
13.0
11.0
1.15
0.236
11.67
-0.29
-0.46
VJ







•
VM








VO
11.0
9.0
11.0
1.15
0.236
10.33
-0.76
-0.92









W
13.0
11.0
11.0
1.15
0.236
11.67
-0.29
-0.46
V1HST








WH







•
WO








WR
14.0
15.0
16.0
1.00
0.236
15.00
0.86
0.69
;ww-";







t % 'V
X
11.0
10.0
14.0
2.08
0.473
H.67
-0.29
*0.46
' SA







f ''
xc








XD







;•/
,:: XF-; ,







9
• s No data submitted

TAG SYMBOLS

ft h Above control limit
[0s Insufficient data
x =
Determined to be an outlier
JJ = Below control limit
	 -JJ
-------
21/43
ESD-LV Performance Evaluation: Blind-B, 15-Apr-1997
Strontium-90
Data sorted by Laboratory .Average
Average
Tag
Lab
Average
Tag Lab
Average
Tag
Lab
9.00

TD
11.67
M
13.00

CE
9.00

LT
11.67
K
13.00

BC
10.00

QU
11.67
DD
13.33

TQ
10.00

NJ
11.67
BH
13.33

ss
10.00

LF
11.67
AF
13.33

JS
10.33

VO
12.00
T
13.33

AZ
10.33

BB
12.00
Q
13.67

SF
10.33

AJ
12.00
NT
13.67

PB
10.67

SI
12.00
L
13.67

N
10.67

DO
12.00
AE
13.67

CX
10.67

BA
12.33
SD
13.67

CG
11.00

S
12.33
SC
13.67

AK
11.00

QZ
12.33
RR
14.00

VH
11.00

QM
12.33
BL
14.00

DE
11.00

«JE
12.33
A
14.00

AW
11.00

EL
12.67
SZ
14.00

AH
11.00

BO
12.67
DT
14.33

HK
11.33

I
12.67
CJ
14.33

FE
11.33

EB
12.67
CA
14.67

CS
11.33

AU
12.67
C
14.67

BM
11.67

X
12.67
AL
15.00

WR
11.67

W
13.00
JY
15.00

CP
11.67

VI
13.00
HP
15.00

CO
11.67

UP
13.00
GQ
16.67

DZ
11.67

SM
13.00
E
18.00

CC
11.67

QW
13.00
D
19.33

BG
% responding labs

Frequency distribution



20-
10-
^5"	0	+2
Normalized deviation of the mean from the known value
• a No data submitted	TAG SYMBOLS	It a Above control limit
[0s Insufficient data	x s Determined to be an outlier	Jl s Below control limit
^							-y
-------
ESD-LV Performance Evaluation: Blind-B, 15-Apr-1997
22/43
Strontium-90
% responding labs	Frequency distribution
20-
10-
I	I	I	I	I	I	T	i	i	i	«	I	I
-6-4-2	0	+2	+4	+6
Normalized deviation of the mean from the grand average
-------
ESD-LV Performance Evaluation: Blind-B, 15-Apr-1997	23 / 43
>¦
(	
Cobalt-60	Statistical Summary	179 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
23.97
Grand Avg 21.87
Std. Dev.
20.40
2.27
Variance
415.96
5.17
% Coef. ofVar.
85.09
10.39
% deviation of mean from known value
14.14
4.13
Norm. dev. of mean from known value
0.15
0.38
Median
21.33
21.33
% deviation of median from known value
1.59
1.59
Norm. dev. of median from known value
0.02
0.15
-------
24/43

ESD-LV Performance Evaluation: Blind-B, 15-Apr-1997

-
Cobalt-60








Lab



Exper.
Rng anal

Normalized deviation

Res. 1
Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
A
21.0
21.0
21.0
0.00
0.000
21.00
-0.30
0.00

AE
21.0
21.0
22.0
0.58
0.118
21.33
-0.18
0.12

AF
22.0
22.0
22.0
0.00
0.000
22.00
0.05
0.35

AH
19.0
19.0
19.0
0.00
0.000
19.00
-0.99
0.69

ZkJ
480
;ma:
41.0
1.00
0.236
42.00
6.97
7s27 .
X
AK
20.0
24.0
20.0
2.31
0.473
21.33
-0.18
0.12

AL
26.0
27.0
25.0
1.00
0.236
26.00
1.43
1.73

AP
23.0
22.0
21.0
1.00
0.236
22.00
0.05
0.35

AR








•
AU
17.0
21.0
21.0
2.31
0.473
19.67
-0.76
-0.46

AW
20.0
20.0
18.0
1.15
0.236
19.33
-0.88
-0.58

AZ
20.0
19.0
22.0
1.53
0.354
20.33
-0.53
-0.23

BA
29.0
29.0
28.0
0.58
0.118
28.67
2.36
2.66

BB
24.0
21.0
22.0
1.53
0.354
22.33
0.16
0.46

BC
21.0
20.0
21.0
0.58
OUR
20 67
-0.42
-0 12

fm%








• •
BH
24.0
22.0
22.0
1.15
0.236
22.67
0.28
0.58

BK
21.0
21.0
21.0
0.00
0.000
21.00
-0.30
0.00

BL
22.0
20.0
21.0
1.00
0.236
21.00
-0.30
0.00

BM
22.0
22.0
21.0
0.58
0.118
21.67
-0.07
0.23

BN
21.0
21.0
22.0
0.58
0.118
21.33
-0.18
0.12

BO
21.0
23.0
21.0
1.15
0.236
21.67
-0.07
0.23

BS








•
BW









C
21.0
23.0
22.0
1.00
0.236
22.00
0.05
0.35

CA
21.0
22.0
22.0
0.58
0.118
21.67
-0.07
0.23

CC
40.0
40.0
41.0
0.58
0.118
40.33
6.40
6.70
X
CE
22.0
22.0
23.0
0.58
0.118
22.33
0.16
0.46

CG









CJ
23.0
23.0
22.0
0.58
0.118
22.67
0.28
0.58

CM








• •
CO
27.0
22.0
26.0
2.65
0.591
25.00
1.09
1.39

CP
25.0
26.0
23.0
1.53
0.354
24.67
0.97
1.27

CS
25.0
26.0
29.0
2.08
0.473
26.67
1.66
1.96

CX
20.0
20.0
20.0
0.00
0.000
20.00
-0.65
-0.35

D
21.0
21.0
21.0
0.00
0.000
21.00
-0.30
0.00

DB








•
DD
19.0
23.0
21.0
2.00
0.473
21.00
-0.30
0.00

DE
23.0
24.0
24.0
0.58
0.118
23.67
0.62
0.92

DI








•
DO
28.0
19.0
23.0
4.51
1.120
23.33
0.51
0.81

DS








- •
DT
23.0
22.0
26.0
2.08
0.473
23.67
0.62
0.92











E
20.0
21.0
21.0
0.58
0.118
20.67
-0.42
-0.12

• s No data submitted	TAG SYMBOLS	ft a Above control limit
0 s Insufficient data	x = Determined to be an outlier	JJ- = Below control limit
-------
a—1—








	^


ESD-LV Performance Evaluation: Blind-B, 15-Apr-1997
25/43
Cobalt-60







*




Exper.
Rng anal

Normalized deviation

Lab
Res. 1
Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
EB
20.0
19.0
20.0
0.58
0.118
19.67
-0.76
-0.46

EL
22.0
22.0
20.0
115
0.236
21.33
-0.18
0.12

.BO-








•
i;EE:








• ¦ '
'•.BV.:-.








' •
EX
24.0
19.0
19.0
2.89
0.591
20.67
-0.42
-0.12

FE
dj&jg®
21.0
22.0
21.0
0.58
0.118
21.33
-0.18
012

J?. Y
FJ
20.0
21.0
22.0
1.00
0.236
21:00
-0.30
0.00
#
FL
15.0
13.0
11.0
2.00
0.473
13.00
-3.07
-2.77










• .
*








•
GQ
21.0
21.0
22.0
0.58
0.118
21.33
-0.18
0.12

HQfci









HI
20.0
19.0
23.0
2.08
0.473
20.67
-0.42
-0.12

HK
22.0
20.0
21.0
1.00
0.236
21.00
-0.30
0.00

HL
24.0
25.0
25.0
0.58
0.118
24.67
0.97
1.27

HP
23.0
23.0
23.0
0.00
0.000
23.00
0.39
0.69

-'b±--









I
22.0
22.0
23.0
0.58
0.118
22.33
0.16
0.46

•ifr-









jyl
22.0
23.0
23.0
0.58
0.118
22.67
0.28
0.58











JE
22.0
22.0
22.0
0.00
0.000
22.00
0.05
0.35

JO
21.0
20.0
20.0
0.58
0.118
20.33
-0.53
-0.23

JM
21.0
22.0
23.0
1.00
0.236
22.00
0.05
0.35

"'JN








•
JQ








*
JS
21.0
22.0
21.0
0.58
0.118
21.33
-0.18
0.12

JY
24.0
23.0
24.0
0.58
0.118
23.67
0.62
0.92

K
18.0
21.0
20.0
1.53
0.354
19.67
-0.76
-0.46

KE









KT









KX
22.0
21.0
21.0
0.58
0.118
21.33
-0.18
0.12

L
20.0
22.0
20.0
1.15
0.236
20.67
-0.42
-0.12

LE
27.0
21.0
23.0
3.06
0.709
23.67
0.62
0.92

LF
25.0
24.0
23.0
. 1.00
0.236
24.00
0.74
1.04

m;.






¦
LR
20.0
21.0
20.0
0.58
0.118
20.33
-0.53
-0.23

LT
22.0
22.0
20.0
1.15
0.236
21.33
-0.18
0.12

M
20.0
21.0
20.0
0.58
0.118
20.33
-0.53
-0.23










•
MP
22.0
23.0
210
1.00
0.236
22.00
0.05
0.35

MT








. •
MV
15.0
16.0
19.0
2.08
0.473
16.67
-1.80
-1.50

• =
No data submitted

TAG SYMBOLS

ft a Above control limit
in
Q
Insufficient data
X 3
Determined to be an outlier
11 a Below control limit
		—
-------
26 / 43	ESD-LV Performance Evaluation: Blind-B, 15-Apr-1997
Cobalt-60
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
MY








•
N
24.0
21.0
24.0
1.73
0.354
23.00
0.39
0.69










•
NH
21.0
21.0
19.0
1.15
0.236
20.33
-0.53
-0.23

NJ
22.0
23.0
23.0
0.58
0.118
22.67
0.28
0.58

NK
18.0
20.0
20.0
1.15
0.236
19.33
-0.88
-0.58




sba-
7,00
2.246
moo
74J7

X









•
O
26.0
24.0
25.0
1.00
0.236
25.00
1.09
1.39

OB
22.0
21.0
21.0
0.58
0.118
21.33
-0.18
0.12

AV » < ' ,,






•
-oat

12.&
12,0
0.58
0.118
11.67
-3.53
-3.23
X
dtfl








»
m








•
lor*








" •
p
29.0
24.0
26.0
2.52
0.591
26.33
1.55
1.85

PA








•
PB
22.0
23.0
22.0
0.58
0.118
22.33
0.16
0.46

PD
23.0
23.0
23.0
0.00
0.000
23.00
0.39
0.69

PO








•
PM
23.0
20.0
24.0
2.08
0.473
22.33
0.16
0.46

PQ








. •
PR








•
PW
21.0
20.0
21.0
0.58
0.118
20.67
-0.42
-0.12

Q
21.0
21.0
21.0
0.00
0.000
21.00
-0.30
0.00

QM
21.0
28.0
26.0
3.61
0.827
25.00
1.09
1.39

QP
23.0
24.0
24.0
0.58
0.118
23.67
0.62
0.92

QQ








•
QT
22.0
20.0
21.0
1.00
0.236
21.00
-0.30
0.00

QU
23.0
22.0
24.0
1.00
0.236
23.00
0.39
0.69

QW
22.0
22.0
24.0
1.15
0.236
22.67
0.28
0.58

QX
25.0
26.0
25.0
0.58
0.118
25.33
1.20
1.50

QY








•
Qfc
11.0.
ld.0j
>12.0
L00
0.236
11.00
-3.76
-3.46
- X
Kb








•
RF








•
KG








•
-RjP








•
RK
20.0
19.0
20.0
0.58
0.118
19.67
-0.76
-0.46

; KP '•








•
RR
24.0
21.0
23.0
1.53
0.354
22.67
0.28
0.58

RU
21.0
21.0
20.0
0.58
0.118
20.67
-0.42
-0.12

vRfc:-








•
s
20.0
20.0
20.0
0.00
0.000
20.00
-0.65
-0.35

sc
19.0
19.0
20.0
0.58
0.118
19.33
-0.88
-0.58

• = No data submitted	TAG SYMBOLS	ft = Above control limit
I 0 s Insufficient data	x = Determined to be an outlier	It s Below control limit
V*- 1 -	¦ ...II	III .1 ¦¦ I	I	—¦¦	.. I sj
-------
ESD-LV Performance Evaluation: Blind-B, 15-Apr-1997
27/43
Cobalt-60
Exper. Rng anal	Normalized deviation
Lab Res. 1	Res. 2	Res. 3 Sigma (R + SR) Average (grand-avg) (known) Tog
SD
21.0
20.0
22.0
1.00
0.236
21.00
-0.30
0.00
SF
21.0
22.0
25.0
2.08
0.473
22.67
0.28
0.58
'SGI








SI
23.0
17.0
14.0
4.58
1.120
18.00
-1.34
-104
IE-







^ •
SM
22.0
22.0
21.0
0.58
0.118
21.67
-0.07
0.23
SN
20.0
20.0
20.0
0.00
0.000
20.00
-0.65
-0.35
SO







•
SR
24.0
28.0
26.0
2.00
0.473
26.00
1.43
1.73
ss
19.0
20.0
19.0
0.58
0.118
19.33
-0.88
-0.58
sx
19.0
22.0
21.0
1.53
0.354
20.67
-0.42
-0.12
sz
21.0
21.0
20.0
0.58
0.118
20.67
-0.42
-0.12
T
22.0
20.0
21.0
1.00
0.236
21.00
-0.30
0.00
TD
25.0
25.0
24.0
0.58
0.118
24.67
0.97
1.27

J'tlW.-
rAAi
-
TQ
W'
ua;
UK
UP
VQ
VA
VC
VH
VI
VJ
VM
VO
VT
W
WE
WH
20.0
29.0
23.0
21.0
20.0
21.0
26.0
23.0
19.0
21.0
25.0
23.0
21.0
19.0
20.0
22.0
24.0
21.0
21.0
0.58
0.118
20.67
26.0
24.0
22.0
20.0
23.0
26.0
24.0
22.0
2.08
0.58
0.58
0.58
1.53
2.31
0.58
1.53
0.473
0.118
0.118
0.118
0.354
0.473
0.118
0.354
26.67
23.33
21.33
19.67
21.33
24.67
23.67
20.67
¦0.42
1.66
0.51
-0.18
-0.76
-0.18
0.97
0.62
-0.42
-0.12
1.96
0.81
0.12
-0.46
0.12
1.27
0.92
-0.12
WO
32.0
32.0:
32.0
0.00
0.000
32.00
3.51
3.81
WR
21.0
22.0
23.0
1.00
0.236
22.00
0.05
0.35
WW
19.0
19.0
19.0
0.00
0.000
19.00
-0.99
-0.69
X
28.0
26.0
23.0
2.52
0.591
25.67
1.32
1.62
XA
20.0
21.0
19.0
1.00
0.236
20.00
-0.65
-0.35
XC








XD
19.0
20.0
18.0
1.00
0.236
19.00
-0.99
-0.69
XF
28.0
28.0
29.0
0.58
0.118
28.33
2.24
2.54
•*
-•


. •
x
• s No data submitted
0 a Insufficient data
TAG SYMBOLS
x s Determined to be an outlier
ft s Above control limit
U s Below control limit
-------
	






	^
28/43
ESD-LV Performance Evaluation: Blind-B,
15-Apr-1997

Cobalt-60






¦v


Data sorted by Laboratory Averag
fe

Average
Tag
Lab
Average
Tag
Lab
Average Tag
Lab
11.00
X
QZ
21.00

SD
22.67
RR
11.67
X
OM
21.00

QT
22.67
QW
13.00

FL
21.00

Q
22.67
NJ
16.67

MV
21.00

HK
22.67
IU
18.00

SI
21.00

FJ
22.67
CJ
19.00

XD
21.00

DD
22.67
BH
19.00

WW
21.00

D
23.00
QU
19.00

AH
21.00

BL
23.00
PD
19.33

ss
21.00

BK
23.00
N
19.33

sc
21.00

A
23.00
HP
19.33

NK
21.33

VI
23.33
UP
19.33

AW
21.33

VC
23.33
DO
19.67

VH
21.33

OB
23.67
VT
19.67

RK
21.33

LT
23.67
QP
19.67

K
21.33

KX
23.67
LE
19.67

EB
21.33

JS
23.67
JY
19.67

AU
21.33

GQ
23.67
DT
20.00

XA
21.33

FE
23.67
DE
20.00

SN
21.33

EL
24.00
LF
20.00

S
21.33

BN
24.67
VO
20.00

ex
21.33

AK
24.67
TD
20.33

NH
21.33

AE
24.67
HL
20.33

M
21.67

SM
24.67
CP
20.33

LR
21.67

CA
25.00
QM
20.33

JG
21.67

BO
25.00
O
20.33

AZ
21.67

BM
25.00
CO
20.67

W
22.00

WR
25.33
QX
20.67

TQ
22.00

MP
25.67
X
20.67

SZ
22.00

JM
26.00
SR
20.67

sx
22.00

JE .
26.00
AL
20.67

RU
22.00

C
26.33
P
20.67

PW
22.00

AP
26.67
UK
20.67

L
22.00

AF
26.67
CS
20.67

HI
22.33

PM
28.33
XF
20.67

EX
22.33

PB
28.67
BA
20.67

E
22.33

I
32.00 x
WO
20.67

BC
22.33

CE
40.33 x
CC
21.00

T
22.33

BB
42.00 x
AJ



22.67

SF
238.00 x
NO
• = No data submitted

TAG SYMBOLS

ft s Above control limit
0 = Insufficient data
V	

x = Determined to be an outlier
11 = Below control limit
-------
ESD-LV Performance Evaluation: Blind-B, 15-Apr-1997
29/43
Cobalt-60
% responding labs	Frequency distribution
10-
T	I	I
+2	>4
Normalized deviation of the mean from the known value
responding labs	Frequency distribution
20-
10-
i ~~ t	1" "	—i" i—¦—i	1 i ^
-6	-4	-2	0+2+4	+6
Normalized deviation of the mean from the grand average
-------
E8D-LV Performance Evaluation: Blind-B, 15-Apr-1997
30/43
Cesium-134	Statistical Summary	179 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
65(36.3 %) Failed to respond ,
7(3.9 %) Outliers
Statistic
J 103(57.5 %) Within all limits
Respondents
4(2.2 %) 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
30.85
23.17
536.68
75.09
-0.48
-0.01
28.67
-7.53
-0.10
Grand Avg 28.54
1.83
3.37
6.43
-7.93
-1.34
28.67
-7.53
-1.27
7(6.1 %) More than 3 norm. S.D.
4(3.5 %) Between 2 and 3 norm. S.D
• 64(56.1 %) Within 1 norm. S.D.
of known value
39(34.2 %) Between 1 and 2 norm. S.D.
-------
31/43

ESD-LV Performance Evaluation: Blind-B, 15-Apr-1997


s	 1 —
Cesium-134







N
Lab



Exper.
Rng anal

Normalized deviation

Res. 1
Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known)' Tag
A
30.0
31.0
32.0
1.00
0.236
31.00
0.85
0.00

AE
28.0
30.0
30.0
1.15
0.236
29.33
0.27
-0.58

AF
26.0
29.0
28.0
1.53
0.354
27.67
-0.30
-1.15

AH
27.0
27.0
26.0
0.58
0.118
26.67
-0.65
-1.50


mm
?62idl

100
0.236
63.00
8.47
7.62
k
AK
30.0
30.0
31.0
0.58
0.118
30.33
0.62
¦0.23

mz
40,0:


0.58
0.118
40;33"
4.08
3.23
X
AP
31.0
30.0
29.0
1.00
0.236
30.00
0.51
-0.35

AS








•
AU
29.0
29.0
24.0
2.89
0.591
27.33
-0.42
-1.27

AW
28.0
28.0
26.0
1.15
0.236
27.33
-0.42
-1.27

AZ
31.0
31.0
34.0
1.73
0.354
32.00
1.20
0.35

BA
31.0
32.0
31.0
0.58
0.118
31.33
0.97
0.12

BB
30.0
30.0
32.0
1.15
0.236
30.67
0.74
-0.12

BC
26.0
27.0
25.0
1.00
0.236
26.00
-0.88
-1.73











BH
32.0
30.0
31.0
1.00
0.236
31.00
0.85
0.00

BK
28.0
28.0
27.0
0.58
0.118
27.67
-0.30
-1.15

BL
28.0
30.0
28.0
1.15
0.236
28.67
0.04
-0.81

BM
28.0
26.0
26.0
1.15
0.236
26.67
-0.65
-1.50

BN
28.0
28.0
29.0
0.58
0.118
28.33
-0.07
-0.92

BO
33.0
33.0
32.0
0.58
0118
32.67
1.43
0.58

BS








•
BW








• '
C
31.0
32.0
30.0
1.00
0.236
31.00
0.85
0.00

CA
28.0
26.0
28.0
1.15
0.236
27.33
-0.42
-1.27

CC
46.0
490
49.0
0;00
0.000
49.00
7.09
0.24
X
CE
28.0
28.0
28.0
0.00
0.000
28.00
-0.19
-1.04

C0









CJ
28.0
29.0
29.0
0.58
0.118
28.67
0.04
-0.8 i

CM








•
CO
28.0
29.0
31.0
1.53
0.354
29.33
0.27
-0.58

CP
33.0
32.0
31.0
1.00
0.236
32.00
1.20
0.35

CS
26.0
24.0
30.0
3.06
0.709
26.67
-0.65
-1.50

CX
32.0
29.0
28.0
2.08
0.473
29.67
0.39
-0.46

D
28.0
27.0
27.0
0.58
0.1.18
27.33
-0.42
-1.27

DB








•
DD
25.0
30.0
26.0
2.65
0.591
27.00
-0.53
-1.39

DE
30.0
30.0
30.0
0.00
0.000
30.00
0.51
-0.35

DI








•
DO
36.0
32.0
32.0
231
0.473
33.33
1.66
0.81

DS








\ •#, '
DT
27.0
28.0
29.0
1.00
0.236
28.00
-0.19
-1.04










• -
E
30.0
30.0
28.0
1.15
0.236
29.33
0.27
-0.58

• s No data submitted

TAG SYMBOLS

IT = Above control limit
0 g Insufficient data	x a Determined to be an outlier	11 = Below control limit
-------
(<	








	^


ESD-LV Performance Evaluation: Blind-B, 15-Apr-1997
32/43
r	
Cesium-134








Lab
Res. 1


Exper.
Rng anal

Normalized deviation

Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
EB
26.0
26.0
26.0
0.00
0.000
26.00
-0.88
-1.73

EL
30.0
29.0
30.0
0.58
0.118
29.67
0.39
-0.46

EO








• '










wis.









EX
28.0
26.0
23.0
2.52
0^591
25.67
-1.00
-1.85

FE
24.0
31.0
28.0
3.51
0.827
27.67
-0.30
-1.15

-¦Mi








•
FJ
28.0
30.0
30.0
1.15
0.236
29.33
0.27
-0.58


mm

i¥x>
1.00
0.236
1700
4i00
-4.85
X
;.***;•








•
(Qtk








•
GQ
29.0
29.0
30.0
0.58
0.118
29.33
0.27
-0.58

lozi.








•
t;HI^








•
HK
29.0
30.0
29.0
0.58
0.118
29.33
0.27
-0.58

HL
32.0
29.0
30.0
1.53
0.354
30.33
0.62
-0.23

HP
28.0
29.0
29.0
0.58
0118
28.67
0.04
-0.81

HX








• '
I
29.0
29.0
29.0
0.00
0.000
29.00
0.16
-0.69

w?








•
IU
31.0
30.0
31.0
0.58
0.118
30.67
0.74
-0.12










•
JE
28.0
27.0
27.0
0.58
0.118
27.33
-0.42
-1.27

JG
24.0
25.0
25.0
0.58
0.118
24.67
-1.34
-2.19

JM
28.0
28.0
29.0
0.58
0.118
28.33
-0.07
-0.92

rJN".








•
JQ








*
JS
29.0
29.0
31.0
1.15
0.236
29.67
0.39
-0.46

JY
30.0
29.0
30.0
0.58
0.118
29.67
0.39
-0.46

K
28.0
29.0
31.0
1.53
0.354
29.33
0.27
-0.58

KE








9
.,et;









KX
28.0
29.0
29.0
0.58
0.118
28.67
0.04
-0.81

L
29.0
30.0
28.0
1.00
0.236
29.00
0.16
-0.69

LE
35.0
33.0
31.0
2.00
0.473
33.00
1.54
0.69

LF
32.0
30.0
31.0
1.00
0.236
31.00
0.85
0.00

"Mk








/ •
LR
28.0
25.0
28.0
1.73
0.354
27.00
-0.53
-1.39

LT
29.0
28.0
28.0
0.58
0.118
28.33
-0.07
-0.92

M
29.0
30.0
28.0
1.00
0.236
29.00
0.16
-0.69










•
MP
28.0
29.0
28.0
0.58
0.118
28.33
-0.07
-0.92










•
=:kv'

-19.0
18.0
0.58
0.118
18.33
-3.54
-4.39
X
• s
No data submitted

TAG SYMBOLS

IT s Above control limit
l0s
Insufficient data
x =
Determined to be an outlier
= Below control limit
V
-------
33/43

ESD-LV Performance Evaluation: Blind-B, 15-Apr-1997


Cesium*134








Lab
Res. 1


Exper.
Rng anal

Normalized deviation

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








• , \ *
N
29.0
30.0
29.0
0.58
0.118
29.33
0.27
-0.58

/Nit:-'









NH
25.0
25.0
25.0
0.00
0.000
25.00
-1.23
-2.08

NJ
29.0
29.0
30.0
0.58
0.118
29.33
0.27
-0.58

NK
24.0
25.0
22.0
1.53
0.354
23.67
-1.69
-2.54



mm
*&80i0
8.00
2.695
27200"
*434
83.48

If#








•s
o
31.0
27.0
27.0
2.31
0.473
28.33
-0.07
-0.92

pBj







1 •










OM
24.0
24.0
26.0
1.15
0.236
24.67
-1.34
-2.19

fail








• -
Mxt








•
i
QZ
13 0
14.0
13.0
0.58
0.118
13.33
-6.27
-8.12
X
RD









RF








-------
((	








	


ESD-LV Performance Evaluation: Blind-B, 15-Apr-1997
34/43
Cesium-134







>




Exper.
Rng anal

Normalized deviation

Lab
Res. 1
Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
SD
28.0
26.0
25.0
1.53
0.354
26.33
-0.77
-1.62

SF
27.0
25.0
27.0
1.15
0.236
26.33
-0.77
-1.62

-'scr








¦ ft'
SI
27.0
29.0
28.0
1.00
0.236
28.00
-0.19
-1.04

•W









SM
28.0
29.0
29.0
0.58
0.118
28.67
0.04
-0.81

8N
29.0
28.0
31.0
1.53
0.354
29.33
0.27
-0.58










•
SR
27.0
30.0
28.0
1.53
0.354
28.33
-0.07
-0.92

ss
28.0
27.0
27.0
0.58
0.118
27.33
-0.42
-1.27

sx
28.0
24.0
27.0
2.08
0.473
26.33
-0.77
-1.62

sz
28.0
28.0
27.0
0.58
0.118
27.67
-0.30
-1.15

T
29.0
29.0
29.0
0.00
0.000
29.00
0.16
-0.69

TD
24.0
30.0
28.0
3.06
0.709
27.33
-0.42
-1.27

^ref-


















•
^TN;4








•
TQ
26.0
26.0
26.0
0.00
0.000
26.00
-0.88
-1.73

I.T8-1'








•
TY








•
::U:.








•
; tJA








•
UK
29.0
28.0
31.0
1.53
0.354
29.33
0.27
-0.58

UP
29.0
30.0
29.0
0.58
0.118
29.33
0.27
-0.58

w








•
VA








• '
vc
28.0
28.0
28.0
0.00
0.000
28.00
-0.19
-1.04

VH
27.0
28.0
27.0
0.58
0.118
27.33
-0.42
-1.27

VI
28.0
27.0
29.0
1.00
0.236
28.00
-0.19
-1.04

VJ








•
VM








. •
VO
26.0
31.0
28.0
2.52
0.591
28.33
-0.07
-0.92

VT
27.0
28.0
31.0
2.08
0.473
28.67
0.04
-0.81

W
27.0
28.0
30.0
1.53
0.354
28.33
-0.07
-0.92

W}








WH








- .m
WO
30.0
24.0
27.0
3.00
0.709
27.00
-0.53
-1.39

WR
27.0
29.0
29.0
1.15
0.236
28.33
-0.07
-0.92

WW
29.0
28.0
26.0
1.53
0.354
27.67
-0.30
-1.15

X
26.0
27.0
28.0
1.00
0.236
27.00
-0.53
-1.39

XA
27.0
27.0
29.0
1.15
0.236
27.67
-0.30
-1.15

XC









XD
30.0
30.0
29.0
0.58
0.118
29.67
0.39
' -0.46

XF
31.0
24.0
24.0
4.04
0.827
26.33
-0.77
-1.62

• =
No data submitted

TAG SYMBOLS

IT = Above control limit
0 =
^	
Insufficient data
x =
Determined to be an outlier
<11 = Below control limit
-------
35/43
ESD-LV Performance Evaluation: Blind-B, 15-Apr-1997
Ceaium-134
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
13.33
X
QZ
27.67

BK
29.33

HK
17.00
X
FL
27.67

AF
29.33

GQ
18.33
X
MV
28.00

VI
29.33

FJ
23.67

NK
28.00

VC
29.33

E
24.67

OM
28.00

SI
29.33

CO
24.67

JG
28.00

PW
29.33

AE
25.00

NH
28.00

DT
29.67

XD
25.67

EX
28.00

CE
29.67

JY
26.00

TQ
28.33

WR
29.67

JS
26.00

SC
28.33

W
29.67

EL
26.00

S
28.33

VO
29.67

CX
26.00

PM
28.33

SR
30.00

PB
26.00

EB
28.33

QM
30.00

DE
26.00

BC
28.33

O
30.00

AP
26.33

XF
28.33

MP
30.33

QX
26.33

SX
28.33

LT
30.33

QW
26.33

SF
28.33

JM
30.33

HL
26.33

SD
28.33

BN
30.33

AK
26.67

RK
28.67

VT
30.67

QP
26.67

CS
28.67

SM
30.67

IU
26.67

BM
28.67

QT
30.67

BB
26.67

AH
28.67

Q
31.00

RR
27.00

X
28.67

KX
31.00

PD
27.00

WO
28.67

HP
31.00

P
27.00

LR
28.67

CJ
31.00

LF
27.00

DD
28.07

BL
31.00

C
27.33

VH
29.00

T
31.00

BH
27.33

TD
29.00

RU
31.00

A
27.33

SS
29.00

QU
31.33

BA
27.33

JE
29.00

M
32.00

CP
27.33

D
29.00

L
32.00

AZ
27.33

CA
29.00

I
32.67

BO
27.33

AW
29.33

UP
33.00

LE
27.33

AU
29.33

UK
33.33

DO
27.67

XA
29.33

SN
40.33
X
AL
27.67

WW
29.33

NJ
49.00
X
CC
27.67

sz
29.33

N
53.00
X
AJ
27.67

FE
29.33

K
272.00
X
NO
• = 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-B, 15-Apr-1907
36/43
Cesium-134
% responding labs	Frequency distribution

10+
0
¦I	I	I	I — .........
-6	-4	-2	0	+2	44	+6
Normalized deviation of the mean from the known value
% responding labs	Frequency distribution
10-
pJ , ¦, y ¦ , , ¦iwyllMMIIHI^iBi
- Illllllll
-6-4-2	0	+2 ¦	+4	+6
Normalized deviation of the mean from the grand average
-------
ESD-LV Performance Evaluation: Blind-B, 15-Apr-1997
37/43
Cesium-137	Statistical Summary	179 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
63(35.2 %) Failed to respond ;
6(3.4 %) Outliers •'
Statistic
; 108(60.3 %) Within all limits
Hmrnu
Respondents
2(1.1 %) In warning zone
but within control
Non-outliers
Mean
Std. Dev.
Variance
% Coef. ofVar.
% 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
24.70
18.82
354.25
76.19
12.29
0.14
22.67
3.03
0.04
Grand Avg 22.75
1.78
3.18
7.84
3.40
0.42
22.67
3.03
0.37
6(5.2 %) More than 3 norm. S.D.
. 97(83.6 %) Within 1 norm. S.D.
•	of Known value
I
i, ¦*

'
-------
38/43

ESD-LV Performance Evaluation: Blind-B, 15-Apr-1997


, - --
Cesium-137








Lab



Exper.
Rng anal

Normalized deviation

Res. 1
Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
A
21.0
21.0
21.0
0.00
0.000
21.00
-0.61
-0.35

AE
22.0
24.0
23.0
1.00
0.236
23.00
0.09
0.35

AF
23.0
27.0
24.0
2.08
0.473
24.67
0.66
0.92

AH
21.0
23.0
22.0
1.00
0.236
22.00
-0.26
0.00



mm
4516
1.00
0.236
4400
736
7.62
X
AK
23.0
24.0
21.0
1.53
0.354
22.67
-0.03
0.23

AL
32.0
28.0
28.0
2.31
0.473
29.33
2.28
2.54

AP
24.0
22.0
22.0
1.15
0.236
22.67
-0.03
0.23

•;AR;








•
AU
22.0
23.0
23.0
0.58
0.118
22.67
-0.03
0.23

AW
23.0
23.0
23.0
0.00
0.000
23.00
0.09
0.35

AZ
21.0
22.0
23.0
1.00
0.236
22.00
-0.26
0.00

BA
17.0
19.0
19.0
1.15
0.236
18.33
-1.53
-1.27

BB
22.0
23.0
24.0
1.00
0.236
23.00
0.09
0.35

BC
23.0
23.0
23.0
0.00
0.000
23.00
0.09
0.35

m








• * '
BH
24.0
24.0
25.0
0.58
0.118
24.33
0.55
0.81

BK
22.0
22.0
22.0
0.00
0.000
22.00
-0.26
0.00

BL
20.0
21.0
20.0
0.58
0.118
20.33
-0.84
-0.58

BM
21.0
22.0
21.0
0.58
0.118
21.33
-0.49
-0.23

BN
22.0
22.0
23.0
0.58
0.118
22.33
-0.14
0.12

BO
24.0
24.0
23.0
0.58
0.118
23.67
0.32
0.58

BS








•
BW








•
C
23.0
21.0
21.0
1.15
0.236
21.67
-0.37
-0.12

CA
23.0
22.0
20.0
1.53
0.354
21.67
-0.37
¦0.12

CO
40.0
43.0
42.0
1.63
0.354
41.67
6.55
6.81
X
CE
25.0
26.0
24.0
1.00
0.236
25.00
0.78
1.04

CG








•
CJ
25.0
23.0
26.0
1.53
0.354
24.67
0.66
0.92

CM








•
CO
25.0
26.0
26.0
0.58
0.118
25.67
1.01
1.27

CP
24.0
25.0
24.0
0.58
0.118
24.33
0.55
0.81

CS
24.0
21.0
25.0
2.08
0.473
23.33
0.20
0.46

CX
26.0
23.0
24.0
1.53
0.354
24.33
0.55
0.81

D
21.0
21.0
22.0
0.58
0.118
21.33
-0.49
-0.23

DB








e
DD
22.0
21.0
22.0
0.58
0.118
21.67
-0.37
-0.12

DE
21.0
21.0
22.0
0.58
0.118
21.33
-0.49
-0.23

pi








•
DO
24.0
32.0
15.0
8.50
2.921
23.67
0.32
0.58

» S








'~ '
DT
25.0
24.0
24.0
0.58
0.118
24.33
0.55
0.81 '

DZ








*
E
22.0
22.0
22.0
0.00
0.000
22.00
-0.26
0.00

• s No data submitted	TAG SYMBOLS	ft = Above control limit
I 0 a Insufficient data	x = Determined to be an outlier	II = Below control limit
y*	¦	-	i	¦¦	¦ ...
-------
(f	








	^


ESD-LV Performance Evaluation: Blind-B, 15-Apr-1997
39/43
f Ceaium-137







>




Exper.
Rng anal

Normalized deviation

Lab
Res. 1
Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
EB
22.0
23.0
22.0
0.58
0.118
22.33
-0.14
0.12

EL
21.0
21.0
21.0
0.00
0.000
21.00
-0.61
-0.35

Itoo"








-
ifiR


















• . '
EX
21.0
17.0
19.0
2.00
0.473
19.00
-1.30
-1.04

FE
19.0
21.0
17.0
2.00
0.473
19.00
-L30
-1.04










•
FJ
25.0
23.0
21.0
2.00
0.473
23.00
0.09
0.35

iFL
•*£. *



0.68
d.iia
12.67
-3.48
-3.23
X
FJT






' '

• -
XCfe








•
GQ
20.0
21.0
21.0
0.58
0.118
20.67
-0.72
-0.46

t*H5:








•
m
20.0
19.0
25.0
3.21
0.709
21.33
-0.49
-0.23

HK
24.0
23.0
24.0
0.58
0.118
23.67
0.32
0.58

HL
26.0
26.0
26.0
0.00
0.000
26.00
1.13
1.39

HP
'W-
24.0
24.0
24.0.
0.00
0.000
24.00
0.43
0.69

I
22.0
23.0
23.0
0.58
0.118
22.67
-0.03
0.23
•
y©'








•
IU
t-'jT"
22.0
23.0
22.0
0.58
0.118
22.33
-O-M
0.12

«. W.~-
JE
23.0
22.0
22.0
0.58
0.118
22.33
-0.14
0.12
•
JG
23.0
23.0
23.0
0.00
0.000
23.00
0.09
0.35

JM
24.0
24.0
23.0
0.58
0.118
23.67
0.32
0.58

vON








•
JQ








•
JS
22.0
22.0
23.0
0.58
0.118
22.33
-0.14
0.12

JY
23.0
23.0
23.0
0.00
0.000
23.00
0.09
0.35

K
22.0
22.0
24.0
1.15
0.236
22.67
-0.03
0,23

JOB








•
KT








•
KX
23.0
22.0
28.0
3.21
0.709
24.33
0.55
0.81

L
21.0
23.0
20.0
1.53
0.354
21.33
-0.49
-0.23

LE
31.0
29.0
28.0
1.53
0.354
29.33
2.28
2.54

LF
24.0
25.0
25.0
0.58
0.118
24.67
0.66
0.92

fUi:









LR
19.0
20.0
25.0
3.21
0.709
21.33
-0.49
-0.23

LT
21.0
23.0
24.0
1.53
0.354
22.67
-0.03
0.23

M
25.0
24.0
24.0
0.58
0.118
24.33
0.55
0.81

?MF!








•
MP
22.0
23.0
22.0
0.58
0.118
22.33
-0.14
0.12

'•'MX;








•
MV
23.0
20.0
24.0
2.08
0.473
22.33
-0.14
0.12

• 2
No data submitted

TAG SYMBOLS

It s Above control limit
ri
5>
Insufficient data
X S
Determined to be an outlier
^ — Below control limit
-------
40/43

ESD-LV Performance Evaluation: Blind-B, 15-Apr-1997


f
Cesium-137








Lab



Exper.
Rng anal

Normalized deviation

Res. 1
Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known)Tag
MY,








•
N
23.0
23.0
23.0
0.00
0.000
23.00
0.09
0.35

;KA








•
NH
21.0
20.0
21.0
0.58
0.118
20.67
-0.72
-0.46

NJ
23.0
24.0
24.0
0.58
0.118
23.67
0.32
0.58

NK
20.0
23.0
22.0
1.53
0.354
21.67
-0.37
-0.12

NO"
1212,0
222.6 ;
282,0
10.00
3.596
222;00
69.02
09.28 .
X
:Kti,









O
23.0
22.0
25.0
1.53
0.354
23.33
0.20
0.46

OB
22.0
23.0
23.0
0.58
0.118
22.67
-0.03
0.23









•
OM
21.0
22.0
22.0
0.58
0.118
21.67
-0.37
-0.12

•fOSr









w
4m








•
•
p
24.0
24.0
21.0
1.73
0.354
23.00
0.09
0.35

PA








•
PB
23.0
23.0
24.0
0.58
0.118
23.33
0.20
0.46

PD
32.0
32;0
32.0
0.00
0.000
32.00
3,20
3.46
X
:pq-'









PM
24.0
23.0
24.0
0.58
0.118
23.67
0.32
0.58

PQ








•
pr:








•
PW
22.0
22.0
21.0
0.58
0.118
21.67
-0.37
-0.12

Q
22.0
21.0
22.0
0.58
0.118
21.67
-0.37
-0.12

QM
25.0
27.0
27.0
1.15
0.236
26.33
1.24
1.50

QP
22.0
26.0
21.0
2.65
0.591
23.00
0.09
0.35

Oft








•
QT
21.0
21.0
21.0
0.00
0.000
21.00
-0.61
-0.35

QU
23.0
24.0
25.0
1.00
0.236
24.00
0.43
0.69

QW
23.0
22.0
24.0
1.00
0.236
23.00
0.09
0.35

QX
25.0
22.0
25.0
1.73
0.354
24.00
0.43
0.69

QY








•
QZ
iiA
110
110
0.00
0.000
11.00
-4.07
-3.81
X
RD


"





•
HF








• ,
RG








•
HI








• '
RK
21.0
21.0
21.0
0.00
0.000
21.00
-0.61
-0.35

RP








•
RR
21.0
23.0
20.0
1.53
0.354
21.33
-0.49
-0.23

RU
22.0
21.0
22.0
0.58
0.118
21.67
-0.37
-0.12

•¦BZ;








•
S
22.0
23.0
23.0
0.58
0.118
22.67
-0.03
0.23

SC
21.0
20.0
24.0
2.08
0.473
21.67
-0.37
-0.12

• s No data submitted	TAG SYMBOLS	1T s Above control limit
0 s Insufficient data	x = Determined to be an outlier	li = Below control limit
-------
ESD-LV Performance Evaluation: Blind-B, 15-Apr-1997	41/43
Cesium-137
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
SD
23.0
22.0
23.0
0.58
0.118
22.67
-0.03
0.23
SF
17.0
22.0
22.0
2.89
0.591
20.33
-0.84
-0.58
SG







*
SI
23.0
23.0
23.0
0.00
0.000
2300
0.09
0.35
SLi







• ¦
SM
24.0
23.0
25.0
1.00
0.236
24.00
0.43
0.69
SN
23.0
22.0
22.0
0.58
0.118
22.33
-0.14
012
SO







•
SR
21.0
19.0
20.0
1.00
0.236
20.00
-0.95
-0.69
SS
22.0
22.0
22.0
0.00
0.000
22.00
-0.26
0.00
sx
21.0
18.0
21.0
1.73
0.354
20.00
-0.95
-0.69
sz
24.0
21.0
23.0
1.53
0.354
22.67
-0.03
0.23
T
25.0
21.0
24.0
2.08
0.473
23.33
0.20
0.46
TD
23.0
27.0
19.0
4.00
0.945
23.00
0.09
0.35
TH







•
TL







- •
TN








TQ
22.0
19.0
22.0
1.73
0.354
21.00
-0.61
-0.35
TS







•
TY







• .
U







•
UA







•
UK
25.0
26.0
25.0
0.58
0.118
25.33
0.90
1.15
UP
25.0
26.0
24.0
1.00
0.236
25.00
0.78
1.04
UQ







•
VA







•
VC
22.0
22.0
22.0
0.00
0.000
22.00
-0.26
0.00
VH
23.0
24.0
24.0
0.58
0.118
23.67
0.32
0.58
VI
22.0
22.0
26.0
2.31
0.473
23.33
0.20
0.46
VJ







•
VM







' •
VO
24.0
22.0
25.0
1.53
0.354
23.67
0.32
0.58
VT
25.0
26.0
26.0
0.58
0.118
25.67
1.01
1.27
W
23.0
22.0
24.0
1.00
0.236
23.00
0.09
0.35
WE







*•
WH







- •
WO
21.0
19.0
20.0
1.00
0.236
20.00
-0.95
-0.69
WR
20.0
22.0
23.0
1.53
0.354
21.67
-0.37
-0.12
WW
18.0
22.0
20.0
2.00
0.473
20.00
-0.95
-0.69
X
26.0
24.0
29.0
2.52
0.591
26.33
1.24
1.50
XA
24.0
23.0
24.0
0.58
0.118
23.67
0.32
0.58
XC







• -
XD
23.0
23.0
23.0
0.00
0.000
23.00
0.09
0.35
XF
22.0
18.0
23.0
2.65
0.591
21.00
-0.61
-0.35
• = No data submitted	TAG SYMBOLS	ft s Above control limit
[0s Insufficient data	x = Determined to be an outlier	= Below control limit
-------
42/43	ESD-LV Performance Evaluation: Blind-B, 15-Apr-1997
Cesium-137
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
11.00
X
QZ
22.00

E
23.33

PB
12.67
X
FL
22.00

BK
23.33

O
18.33

BA
22.00

AZ
23.33

CS
19.00

FE
22.00

AH
23.67

XA
19.00

EX
22.33

SN
23.67

VO
20.00

WW
22.33

MV
23.67

VH
20.00

WO
22.33

MP
23.67

PM
20.00

sx
22.33

JS
23.67

NJ
20.00

SR
22.33

JE
23.67

JM
20.33

SF
22.33

IU
23.67

HK
20.33

BL
22.33

EB
23.67

DO
20.67

NH
22.33

BN
23.67

BO
20.67

GQ
22.67

SZ
24.00

SM
21.00

XF
22.67

SD
24.00

QX
21.00

TQ
22.67

S
24.00

QU
21.00

RK
22.67

OB
24.00

HP
21.00

QT
22.67

LT
24.33

M
21.00

EL
22.67

K
24.33

KX
21.00

A
22.67

I
24.33

DT
21.33

RR
22.67

AU
24.33

CX
21.33

LR
22.67

AP
24.33

CP
21.33

L
22.67

AK
24.33

BH
21.33

HI
23.00

XD
24.67

LF
21.33

DE
23.00

W
24.67

CJ
21.33

D
23.00

TD
24.67

AF
21.33

BM
23.00

SI
25.00

UP
21.67

WR
23.00

QW
25.00

CE
21.67

SC
23.00

QP
25.33

UK
21.67

RU
23.00

P
25.67

VT
21.67

Q
23.00

N
25.67

CO
21.67

PW
23.00

JY
26.00

HL
21.67

OM
23.00

JG
26.33

X
21.67

NK
23.00

FJ
26.33

QM
21.67

DD
23.00

BC
29.33

LE
21.67

CA
23.00

BB
29.33

AL
21.67

C
23.00

AW
32.00
X
PD
22.00

VC
23.00

AE
41.67
X
CC
22.00

ss
23.33

VI
44.00
X
AJ



23.33

T
222.00
X
NO
• = No data submitted TAG SYMBOLS	1T = Above control limit
0 ¦ Insufficient data	x s Determined to be an outlier	II = Below control limit
-------
ESD-LV Performance Evaluation: Blind-B, 15-Apr-1997
43/43
Cesium-137
% responding labs	 	 Frequency distribution
10-
-i	¦	¦¦ 	¦	"f	,	Lr--	i	,	
-6	-4	-2	0	+2	+4	+6
Normalized deviation of the mean from the known value
% responding laba	Frequency distribution	
20-
10-
I	I	T M 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-97/087
Environmental Protection	Development	August 1997
Agency	Washington, DC 20460
Gamma in Water
Performance
Evaluation Study
A Statistical Evaluation
of the June 6, 1997 Data
-------
Gamma in Water
Performance Evaluation Study
June 6, 1997
Environmental Protection Agency
National Exposure Research Laboratory
Environmental Sciences Division
<
Las Vegas, Nevada

RECEIVED


SEP 4697

NERL/CRD-LV LIBRARY
-------
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 6, 1997.
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-Jun-1997	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 sure 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	i
listed above or failure of the outlier test. The fifth and sixth columns are a measure of laboratory j
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.
-------
f	
2/37
ESD-LV Performance Evaluation: Gamma in Water, 6-Jun-1997
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-Jun-1997
3/37
Cobalt-60
Statistical Summary
168 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
22(13.1 °/o) Failed to respond •»„
* «
9(5.4 %) Outliers •*
Statistic
; 134(79.8 %) Within all limits
Respondents
3(1.8 %) 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
20.90
15.55
241.87
74.40
16.13
0.19
18.67
3.70
0.04
Grand Avg 18.77
1.87
3.50
9.97
4.28
0.41
18.67
3.70
0.36
9(6.2 %) More than 3 norm. S.D. »
3(2.1 %) Between 2 and 3 norm. S.D
; 118(80.8 %) Within 1 norm. S.D.
of known value
16(11.0 %) Between 1 and 2 norm. S.D.
-------
((	
4/37
ESD-LV Performance Evaluation: Gamma in Water,
6-Jun-1997
	^
Cobalt-60







Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
A
17.0
18.0
17.0
0.58
0.118
17.33
-0.50
-0.23
AE
18.0
18.0
19.0
0.58
0.118
18.33
-0.15
0.12
AF
19.0
21.0
18.0
1.53
0.354
19.33
0.19
0.46
AH








AI
17.0
17.0
17.0
0.00
0.000
17.00
-0.61
-0.35
AJ
18.0
18.0
18.0
0.00
0.000
18.00
-0.27
0.00
AK
21.0
21.0
19.0
1.15
0.236
20.33
0.54
0.81
AL
20.0
18.0
17.0
1.53
0.354
18.33
-0.15
0.12
AP
19.0
19.0
19.0
0.00
0.000
19.00
0.08
0.35
AU
19.0
18.0
16.0
1.53
0.354
17.67
-0.38
-0.12
AW
16.0
19.0
19.0
1.73
0.354
18.00
-0.27
0.00
AY
23.0
22.0
23.0
0.58
0.118
22.67
1.35
1.62
AZ
20.0
19.0
18.0
1.00
0.236
19.00
0.08
0.35
BA
22.0
23.0
19-0
2.08
0.473
21.33
0.89
1.15
BB
20.0
18.0
16.0
2.00
0.473
18.00
-0.27
0.00
BC
20.0
21.0
20.0
0.58
0.118
20.33
0.54
0.81
BG
103.0
113.0
1074
5.03
1.345,
107.67
30.79
31.06 X
BH
18.0
20.0
19.0
1.00
0.236
19.00
0.08
0.35
BK
19.0
19.0
18.0
0.58
0.118
18.67
-0.04
0.23
BL
19.0
20.0
23.0
2.08
0.473
20.67
0.66
0.92
BM
20.0
17.0
18.0
1.53
0.354
18.33
-0.15
0.12
BN
20.0
16.0
18.0
2.00
0.473
18.00
-0.27
0.00
BO
20.0
19.0
19.0
0.58
0.118
19.33
0.19
0.46
C
19.0
19.0
20.0
0.58
0.118
19.33
0.19
0.46
CA
18.0
19.0
19.0
0.58
0.118
18.67
-0.04
0.23
CC
18.0
17.0
17.0
0.58
0.118
17.33
-0.50
-0.23
CE
18.0
20.0
17.0
1.53
0.354
18.33
-0.15
0.12
CJ
19.0
19.0
19.0
0.00
0.000
19.00
0.08
0.35
CM







.V *"
CO
20.0
22.0
19.0
1.53
0.354
20.33
0.54
0.81
CP
19.0
16.0
19.0
1.73
0.354
18.00
-0.27
0.00
cs
21.0
22.0
21.0
0.58
0.118
21.33
0.89
1.15
cx
22.0
25.0
18.0
3.51
0.827
21.67
1.00
1.27
D
19.0
18.0
18.0
0.58
0.118
18.33
-0.15
0.12
DD
18.0
19.0
19.0
0.58
0.118
18.67
-0.04
0.23
DE
20.0
20.0
20.0
0.00
0.000
20.00
0.43
0.69
DH
18.0
19.0
18.0
0.58
0.118
18.33
-0.15
0.12
DO
22.0
18.0
19.0
2.08
0.473
19.67
0.31
0.58
DR
22.0
22.0
18.0
2.31
0.473
20.67
0.66
0.92
DT
21.0
18.0
18.0
1.73
0.354
19.00
0.08
0.35
DZ








E
18.0
17.0
18.0
0.58
0.118
17.67
-0.38 ,
-0.12
EA
18.0
18.0
18.0
0.00
0.000
18.00
-0.27
0.00
EB
16.0
17.0
16.0
0.58
0.118
16.33
-0.84
-0.58
EL
17.0
19.0
18.0
1.00
0.236
18.00
-0.27
0.00
• =
No data submitted

TAG SYMBOLS

1t = Above control limit
I0 =
Insufficient data
x =
Determined to be an outlier
s Below control limit
	1	
-------
N
ESD-LV Performance Evaluation: Gamma in Water, 6-Jun-1997	5 / 37
r
Cobalt-60
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
EW
25.0
25.0
18.0
4.04
0.827
22.67
1.35
1.62

EX
14.0
16.0
22.0
4.16
0.945
17.33
-0.50
-0.23

FE
16.0
14.0
11.0
2.52
0.591
13.67
-1.77
-1.50

FJ
16.0
18.0
20.0
2.00
0.473
18.00
-0.27
0.00

FL
17.0
18.0
17.0
0.58
0118
17.33
-0.50
-0.23

?GI~








• yV;
GL
18.0
18.0
18.0
0.00
0.000
18.00
-0.27
0.00

GQ
17.0
18.0
18.0
0.58
0.118
17.67
-0.38
-0.12

HI









HK
19.0
18.0
19.0
0.58
0.118
18.67
-0.04
0.23

HL
20.0
20.0
19.0
0.58
0.118
19.67
0.31
0.58

HP
18.0
19.0
19.0
0.58
0.118
18.67
-0.04
0.23

HX








»
I
21.0
18.0
21.0
1.73
0.354
20.00
0.43
0.69

IU''
"-'J
:73:o*

780
4.51
1.120
W.BT
20.46"

v>v
\M
JE
19.0
18.0
20.0
1.00
0.236
19.00
0.08
0.35
. V*.. - J
JG
21.0
16.0
19.0
2.52
0.591
18.67
-0.04
0.23

JM
17.0
18.0
18.0
0.58
0.118
17.67
-0.38
-0.12

JS
18.0
17.0
19.0
1.00
0.236
18.00
-0.27
0.00

JY
20.0
19.0
19.0
0.58
0.118
19.33
0.19
0.46

K
16.0
18.0
17.0
1.00
0.236
17.00
-0.61
-0.35

KH
19.0
19.0
20.0
0.58
0.118
19.33
0.19
0.46

KL
18.0
19.0
19.0
0.58
0.118
18.67
-0.04
0.23

KX
18.0
20.0
19.0
1.00
0.236
19.00
0.08
0.35

L
18.0
17.0
17.0
0.58
0.118
17.33
-0.50
-0,23

LE
16.0
22.0
18.0
3.06
0.709
18.67
-0.04
0.23

LF
19.0
19.0
18.0
0.58
0.118
18.67
-0.04
0.23

LR
17.0
19.0
18.0
1.00
0.236
18.00
-0.27
0.00

LT
18.0
17.0
16.0
1.00
0.236
17.00
-0.61
-0.35

M
17.0
17.0
18.0
0.58
0.118
17.33
-0.50
-0.23

MP
19.0
20.0
19.0
0.58
0.118
19.33
0.19
0.46

MT
20.0
20.0
20.0
0.00
0.000
20.00
0.43
0.69

;MV:
? 7£p;;:

llWtl.
?p;poC
OpOO;

.;-442;i
-Si
:;^.r
MX
17.0
19.0
19.0
1.15
0.236
18.33
-6! 15
0.12

N
19.0
19.0
20.0
0.58
0.118
19.33
0.19
0.46

NH
17.0
16.0
16.0
0.58
0.118
16.33
-0.84
-0.58

NJ
18.0
19.0
19.0
0.58
0.118
18.67
-0.04
0.23

NK
18.0
19.0
18.0
0.58
0.118
18.33
-0.15
0.12

;7nOr
14®
WSM
mm
20.50
&321
16067

52;54l
w
NP
17.0
22.0
19.0
2.52
0.591
19.33
0.19
0.46

O
16.0
17.0
17.0
0.58
0.118
16.67
-0.73
-0.46

OA
18.0
17.0
18.0
0.58
0.118
17.67
-0.38
-0.12

OB
19.0
18.0
18.0
0.58
0.118
18.33
-0.15
0.12

OM
11.0
10.0
11.0
0.58
0.118
10.67
-2.81
-2.54

• ='
0 S
No data submitted
Insufficient data
X s
TAG SYMBOLS
Determined to be an outlier
It s Above control limit
= Below control limit
-------
(c	:—
6/37
V
ESD-L.V Performance Evaluation: Gamma in Water,
6-Jun-1997

	^
Cobalt-60







¦•v
Lab
Res. 1


Exper.
Rng anal

Normalized deviation

Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
OT
18.0
17.0
14.0
2.08
0.473
16.33
-0.84
-0.58

P
23.0
25.0
23.0
1.15
0.236
23.67
1.70
1.96

PB
20.0
21.0
20.0
0.58
0.118
20.33
0.54
0.81

PD









PE








' •
PM
25.0
20.0
25.0
2.89
0.591
23.33
1.58
1.85

PQ








ft '
PIT








¦'
PW
18.0
18.0
17.0
0.58
0.118
17.67
-0.38
-0.12

PX
18.0
18.0
19.0
0.58
0.118
18.33
-0.15
0.12

Q
18.0
17.0
18.0
0.58
0.118
17.67
-0.38
-0.12

QM
15.0
16.0
13.0
1.53
0.354
14.67
-1.42
-1.15

QP
19.0
18.0
19.0
0.58
0.118
18.67
-0.04
0.23

QT
17.0
18.0
17.0
0.58
0.118
17.33
-0.50
-0.23

QU
19.0
20.0
20.0
0.58
0.118
19.67
0.31
0.58

QW
18.0
19.0
20.0
1.00
0.236
19.00
0.08
0.35

QX
35.0
36,0
35.0
0.58
0*118
35.33
5.74
6.00
: r -r
\X '
QZ
18.0
19.0
19.0
0.58
0.118
18.67
-0.04
0.23

R
19.0
19.0
18.0
0.58
0.118
18.67
-0.04
0.23

RF









RH









RK








, •'
RO
21.0
18.0
20.0
1.53
0.354
19.67
0.31
0.58

KR









RU
21.0
20.0
22.0
1.00
0.236
21.00
0.77
1.04

RX
20.0
19.0
20.0
0.58
0.118
19.67
0.31
0.58

RZ








' 9
S
17.0
18.0
17.0
0.58
0.118
17.33
-0.50
-0.23

sc
19.0
17.0
17.0
1.15
0.236
17.67
-0.38
-0.12

SD
18.0
18.0
19.0
0.58
0.118
18.33
-0.15
0.12

SF
34.0
35.0
34.0
0.58
0;118
34^33
6.39
5.66
X
SI
18.0
17.0
17.0
0.58
0.118
17.33
-0.50
-0.23

SM
16.0
19.0
22.0
3.00
0.709
19.00
0.08
0.35

SN
16.0
18.0
16.0
1.15
0.236
16.67
-0.73
-0.46

SR
28.0
18.0
22.0
5.03
1.345
22.67
1.35
1.62

ss
17.0
19.0
19.0
1.15
0.236
18.33
-0.15
0.12

sv
17.0
20.0
22.0
2.52
0.591
19.67
0.31
0.58

sx
18.0
19.0
19.0
0.58
0.118
18.67
-0.04
0.23

sz
19.0
18.0
19.0
0.58
0.118
18.67
-0.04
0.23

T
18.0
19.0
19.0
0.58
0.118
18.67
-0.04
023

TC









TD
22.0
21.0
22.0
0.58
0.118
21.67
1.00
1.27

TO
24.0
23.0
25.0
1.00
0.236
24.00
1.81
2.08

TQ
16.0
„ 17.0
17.0
0.58
0.118
16.67
-0.73
-0.46

TR
29.0

31.0
5.86
1.570
33,33
. / 5.04 :
5 31

• =
No data submitted

TAG SYMBOLS

IT s Above control limit
hi
Insufficient data
x =
Determined to be an outlier
s Below control limit
-------
ESD-LV Performance Evaluation: Gamma in Water, fi-.Tnn.1M7
7/37
Cobalt-60
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
•TS- '


















->'6
UP
20.0
20.0
21.0
0.58
0.118
20.33
0.54
0.81

UR
17.0
16.0
16.0
0.58
0.118
16.33
-0.84
-0.58

UV
19.0
23.0
22.0
2.08
0.473
21.33
0.89
1.15

UX
18.0
18.0
19.0
0.58
0.118
18.33
-0.15
0.12

VA









VC
18.0
18.0
19.0
0.58
0.118
18.33
-0.15
0.12

VE
20.0
16.0
20.0
2.31
0.473
18.67
-0.04
0.23

VH
17.0
20.0
22.0
2.52
0.591
19.67
0.31
0.58

VI
21.0
21.0
20.0
0.58
0.118
20.67
0.66
0.92

VM
20.0
20.0
20.0
0.00
0.000
20.00
0.43
0.69

VO
17.0
20.0
20.0
1.73
0.354
19.00
0.08
0.35

vs
20.0
18.0
19.0
1.00
0.236
19.00
0.08
0.35

w
21.0
20.0
17.0
2.08
0.473
19.33
0.19
0.46

WD
21.0
17.0
20.0
2.08
0.473
19.33
0.19
0.46

WI









WJ
19.0
21.0
19.0
1.15
0.236
19.67
0.31
0.58

/WK
~ 9:0

9X>
0.00
0.000
|9;00
^3.3§

i-X^
WO
15.0
19.0
19.0
2.31
0.473
17.67
-0.38
-0.12

WR
16.0
17.0
17.0
0.58
0.118
16.67
-0.73
-0.46

3-
Oft'
8^
M-P.i
7.0
0.68
0ll8
J;7:33=
-3.96
&70

wv
21.0
20.0
20.0
0.58
0.118
20.33
0.54
0.81

WW
17.0
17.0
18.0
0.58
0.118
17.33
-0.50
-0.23

wx"








T:l
X
23.0
26.0
26.0
1.73
0.354
25.00
2.16
2.42

XA
18.0
20.0
18.0
1.15
0.236
18.67
-0.04
0.23

XB
25.0
21.0
19.0
3.06
0.709
21.67
1.00
1.27

XC
14.0
14.0
15.0
0.58
0.118
14.33
-1.54
-1.27

XD
16.0
19.0
16.0
1.73
0.354
17.00
-0.61
-0.35

XF
18.0
19.0
18.0
0.58
0.118
18.33
-0.15
0.12

XG
21.0
21.0
21.0
0.00
0.000
21.00
0.77
1.04

Y
18.0
19.0
18.0
0.58
0.118
18.33
-0.15
0.12

Data sorted by Laboratory Average
Average
Tag
Lab
Average Tag
Lab
Average Tag
Lab
6.00
X
MV
16.33
NH
17.00
AI
7.33
X
WS
16.33
EB
17.33
WW
9.00
X
WK
16.67
WR
17.33
SI
10.67

OM
16.67
TQ
17.33
s
13.67

FE
16.67
SN
17.33
QT
14.33

XC
16.67
O
17.33
M
14.67

QM
17.00
XD
17.33
L
16.33

UR
17.00
LT
17.33
FL
16.33

OT
17.00
K
17.33
EX
• 2 No data submitted
0 s Insufficient data

TAG SYMBOLS
x = Determined to be an outlier
ft = Above control limit
11 3 Below control limit
-------
® ' 37	ESD-LV Performance Evaluation: Gamma in Water, 6-Jun-1997
	
Cobalt-60
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
17.33

CC
18.67

VE
19.67

SV
17.33

A
18.67

T
19.67

RX
17.67

WO
18.67

sz
19.67

RO
17.67

sc
18.67

SX
19.67

QU
17.67

Q
18.67

R
19.67

HL
17.67

PW
18.67

QZ
19.67

DO
17.67

OA
18.67

QP
20.00

VM
17.67

JM
18.67

NJ
20.00

MT
17.67

GQ
18.67

LF
20.00

I
17.67

£
18.67

LE
20.00

DE
17.67

AU
18.67

KL
20.33

WV
18.00

LR
18.67

JG
20.33

UP
16.00

JS
18.67

HP
20.33

PB
18.00

GL
18,67

HK
20.33

CO
18.00

FJ
18.67

DD
20.33

BC
18.00

EL
18.67

CA
20.33

AK
18.00

EA
18.67

BK
20.67

VI
18.00

CP
19.00

VS
20.67

i>R
18.00

BN
19.00

vo
20.67

BL
18.00

BB
19.00

SM
21.00

XG
18.00

AW
19.00

QW
21.00

RU
18.00

AJ
19.00

KX
21.33

UV
18.33

Y
19.00

eJE
21.33

CS
18.33

XF
19.00

DT
21.33

BA
18.33

VC
19.00

CJ
21.67

XB
18.33

UX
19.00

BH
21.67

TD
18.33

ss
19.00

AZ
21.67

CX
18.33

SD
19.00

AP
22,67

SR
18.33

PX
19.33

WD
22.67

EW
18.33

OB
19.33

W
22.67

AY
18.33

NK
19.33

NP
23.33

PM
18.33

MX
19.33

N
23.67

P
18.33

DH
19.33

MP
24.00

TO
18.33

D
19.33

KH
25.00

X
18.33

CE
19.33

JY
33.33
, X
TR
18.33

BM
19.33

C
34.33
X
SF
18.33

AL
19.33

BO
35.33
X
QX
18.33

AE
19.33

AF
77.67
X
ru
18.67

XA
19.67

WJ
107.67
X
BG



19.67

VH
169.67
X
NO
• s No data submitted	TAG SYMBOLS	fl s Above control limit
0 3 Insufficient data	x s Determined to be an outlier	U = Below control limit
-------
ESD-LV Performance Evaluation: Gamma in Water, 6-Jun-1997 - 9/37
Cobalt-60
%
20
10
0
responding labs	Frequency distribution
Normalized deviation of the mean from the known value
responding labs
Frequency distribution
20-
10-
- j ~
T"
-4	-2	0	+2	+4
Normalized deviation of the mean from the grand average
T - "i
+6
-------
ESD-LV Performance Evaluation: Gamma in Water, 6-Jun-1997
10/37
Zinc-65	Statistical Summary	168 Participants
The known value of this nuclide is 100.0 pCi/1 with an expected precision of 10.0; the control limits
are 82.7 to 117.3; the warning regions are 82.7 to 88.4 and 111.6 to 117.3
24(14.3 %) Failed to respond
. 123(73.2 %) Within all limits
8(4.8 %) Outliers ' / \hv


1 (0.6 %) Out of control'

12(7.1 %) In warning zone
but not an outlier _
^UTL| r
i i
but within control
Statistic
Respondents
Non-outliers
Mean
108.00
Grand Avg 103.33
Std. Dev.
54.20
5.97
Variance
2937.90
35.65
% Coef. of Var.
50.19
5.78
% deviation of mean from known value
8.00
3.33
Norm. dev. of mean from known value
0.15
0.56
Median
103.17
103.33
% deviation of median from known value
3.17
3.33
Norm. dev. of median from known value
0.06
0.56
9(6.3 %) More than 3 norm. S:D.
12(8.3 %) Between 2 and 3 norm. S.D.'
,85(59.0 %) Within 1 norm. S.D.
I
!	of known value
* 38(26.4 %) Between 1 and 2 norm. S.D.
-------
6
11/37
11/37

ESD-LV Performance Evaluation: Gamma in Water,
6-Jun-1997


Zinc-65









Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation

Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
A
105.0
104.0
100.0
2.65
0.295
103.00
-0.06
0.52

AE
98.0
109.0
96.0
7.00
0.768
101.00
-0.40
0.17

AF
114.0
104.0
109.0
5.00
0.591
109.00
0.98
1.56

AH









AI
96.0
92.0
96.0
2.31
0.236
94.67
-1.50
-0.92

AJ
103.0
103.0
99.0
2.31
0.236
101.67
-0.29
0.29

AK
105.0
106.0
108.0
1.53
0.177
106.33
0.52
1.10

AL
114.0
110.0
115.0
2.65
0.295
113.00
1.68
2.25

AP
113.0
103.0
92.0
10.50
1.458
102.67
-0.11
0.46

AU
97.0
102.0
97.0
2.89
0.295
98.67
-0.81
-0.23

AW
90.0
92.0
99.0
4.73
0.532
93.67
-1.67
-1.10

AY
102.0
111.0
108.0
4.58
0.532
107.00
0.64
1.21

AZ
113.0
116.0
104.0
6.24
0.709
111.00
1.33
1.91

BA
108.0
110.0
103.0
3.61
0.413
107.00
0.64
1.21

BB
111.0
109.0
107.0
2.00
0.236
109.00
0.98
1.56

BC
104.0
104.0
100.0
2.31
0.236
102.67
-0.11
0.46

BG
108.0
114.0
99.0
7.55
0.886
107.00
0.64
1.21

BH
113.0
112.0
111.0
1.00
0.118
112.00
1.50
2.08

BK
105.0
108.0
108.0
1.73
0.177
107.00
0.64
1.21

BL
96.0
98.0
103.0
3.61
0.413
99.00
-0.75
-0.17

BM
105.0
108.0
104.0
2.08
0.236
105.67
0.41
0.98

BN
100.0
103.0
107.0
3.51
0.413
103.33
0.00
0.58

BO
107.0
108.0
109.0
1.00
0.118
108.00
0.81
1.39

C
98.0
102.0
105.0
3.51
0.413
101.67
-0.29
0.29

CA
99.0
103.0
101.0
2.00
0.236
101.00
-0.40
0.17

CC
90.0
92.0
93.0
1.53
0.177
91.67
-2.02
-1.44

CE
100.0
97.0
102.0
2.52
0.295
99.67
-0.63
-0.06

CJ
100.0
98.0
100.0
1.15
0.118
99.33
-0.69
-0.12

CM









CO
108.0
103.0
108.0
2.89
0.295
106.33
0.52
1.10

CP
99.0
110.0
91.0
9.54
1.233
100.00
-0.58
0.00

CS
118.0
117.0
115.0
1.53
0.177
116.67
2.31
2.89

CX
117.0
109.0
99.0
9.02
1.120
108.33
0.87
1.44

D
105.0
102.0
105.0
1.73
0.177
104.00
0.12
0.69

DD
100.0
104.0
101.0
2.08
0.236
101.67
-0.29
0.29

DE
105.0
106.0
107.0
1.00
0.118
106.00
0.46
1.04

DH
96.0
98.0
94.0
2.00
0.236
96.00
-1.27
-0.69

DO
103.0
119.0
98.0
10.97
1.458
106.67
0.58
1.15

DR
103.0
98.0
106.0
.4.04
0.473
102.33
-0.17
0.40

DT
120.0
106.0
104.0
8.72
0.945
110.00
1.16
1.73

DZ









E
100.0
97.0
101.0
2.08
0.236
99.33
-0.69
-0.12

EA
95.0
94.0
94.0
0.58
0.059
94.33
-1.56
-0.98

EB
100.0
100.0
101.0
0.58
0.059
100.33
-0.52
0.06

EL
100.0
100.0
96.0
2.31
0.236
98.67
-0.81
-0.23

• s No data submitted

TAG SYMBOLS

IT s Above control limit
0 s Insufficient data	x = Determined to be an outlier	= Below control limi
-------
ESD-LV Performance Evaluation: Gamma in Water, 6-Jun-1997
12/37
Zinc-65
Lab
Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known)
EW
86.0
118.0
100.0
16.04
2.695
101.33
-0.35
0.23
EX
108.0
103.0
89.0
9.85
1.233
100.00
-0.58
0.00
FE
101.0
98.0
101.0
1.73
0.177
100.00
-0.58
0.00
FJ
113.0
107.0
100.0
6.51
0.768
106.67
0.58
1.15
FL
102.0
105.0
108.0
3.00
0.354
105.00
0.29
0.87
GI








GL
111.0
101.0
108.0
5.13
0.591
106.67
0.58
1.15
GQ
1100
111.0
111.0
0.58
0.059
110.67
1.27
1.85
HI








HK
106.0
104.0
106.0
1.15
0.118
105.33
0.35
0.92
HL
98.0
102.0
92.0
5.03
0.591
97.33
-1.04
-0.46
HP
111.0
116.0
115.0
2.65
0.295
114.00
1.85
2.42
HX








I
100.0
105.0
102.0
2.52
0.295
102.33
-0.17
0.40
TV
413 0
401.0

6 00
0 709
407 00


-r
JE
114.0
114.0
116.0
1.15
0.118
114.67
1.96
2.54
J6j
84;0
v 78,0
82,0
3 06
0:354 •
81.33
-3;81; ~
-3i23
JM
100.0
105.0
104.0
2.65
0.295
103.00
-0.06
0.52
JS
101.0
106.0
107.0
3.21
0.354
104.67
0.23
0.81
JY
105.0
108.0
108.0
1.73
0.177
107.00
0.64
1.21
K
99.0
97.0
98.0
1.00
0.118
98.00
-0.92
-0.35
KH
96.0
96.0
94.0
1.15
0.118
95.33
-1.38
-0.81
KL
100.0
104.0
105.0
2.65
0.295
103.00
-0.06
0.52
KX
98.0
98.0
98.0
0.00
0.000
98.00
-0.92
-0.35
L
106.0
103.0
102.0
2.08
0.236
103.67
0.06
0.64
LE
111.0
126.0
76.0
25.66
4.721
104.33
0.17
0.75
LF
110.0
110.0
100.0
5.77
0.591
106.67
0.58
1.15
LR
102.0
93.0
99.0
4.58
0.532
98.00
-0.92
-0.35
LT
105.0
104.0
106.0
1.00
0.118
105.00
0.29
0.87
M
102.0
106.0
105.0
2.08
0.236
104.33
0.17
0.75
MP
109.0
99.0
93.0
8.08
0.945
100.33
-0.52
0.06
MT
110.0
111.0
112.0
1.00
0.118
111.00
1.33
1.91
MV
Tyim.

WM-
0.00;
0.000
, :7.00f

"v,¦,
>16.11;
MX
104.0
99.0
92.0
6.03
0.709
98.33
-0.86
-0.29
N
101.0
100.0
101.0
0.58
0.059
100.67
-0.46
0.12
NH
112.0
112.0
111.0
0.58
0.059
111.67
1.44
2.02
NJ
107.0
110.0
107.0
1.73
0.177
108.00
0.81
1.39
NK
110.0
107.0
100.0
5.13
0.591
105.67
0.41
0.98
InqI
556;0
:650.0
744^0
94.00
20.247
650l00

:95i26h
NP
94.0
95.0
103.0
4.93
0.532
97.33
-1.04
-0.46
O
100.0
100.0
100.0
0.00
0.000
100.00
-0.58
0.00
OA
103.0
103.0
107.0
2.31
0.236
104.33
0.17
0.75
:fOB"








OM
93.0
93.0
92.0
0.58
0.059
92.67
-1.85
-1.27



;:X: '
>b
4xK

• = No data submitted
0 = Insufficient data
x s
TAG SYMBOLS
Determined to be an outlier
1T s Above control limit
J! = Below control limit
-------
13 / 37	ESD-LV Performance Evaluation: Gamma in Water, 6-Jun-1997
Zinc-65
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
OT
104.0
102.0
96.0
4.16
0.473
100.67
-0.46
0.12
P
87.0
97.0
102.0
7.64
0.886
95.33
-1.38
-0.81
PB
109.0
114.0
110.0
2.65
0.295
111.00
1.33
191
PD







¦ ^ _
PE







¦ •
PM
110.0
114.0
120.0
5.03
0.591
114.67
1.96
2.54 '
PQ







• '
FU








PW
103.0
97.0
101.0
3.06
0.354
100.33
-0.52
0.06
PX
98.0
95.0
98.0
1.73
0.177
97.00
-1.10
-0.52
Q
105.0
105.0
107.0
1.15
0.118
105.67
0.41
0.98
QM
105.0
111.0
98.0
6.51
0.768
104.67
0.23
0.81
QP
117.0
89.0
105.0
14.05
2.245
103.67
0.06
0.64
QT
98.0
106.0
101.0
4.04
0.473
101.67
-0.29
0.29
QU
114.0
115.0
110.0
2.65
0.295
113.00
1.68
2.25
QW
112.0
114.0
108.0
3.06
0.354
111.33
1.39
1.96
QX
105.0
101.0
103.0
2.00
0.236
103.00
-0.06
0.52
QZ
110.0
108.0
109.0
1.00
0.118
109.00
0.98
1.56
R
107.0
103.0
103.0
2.31
0.236
104.33
0.17
0.75
RP








RH








RK







¦ •
RO
109.0
106.0
115.0
4.58
0.532
110.00
1.16
1;73
RR







•
RU








RX
91.0
92.0
90.0
1.00
0118
91.00
-2.13
-1.56
RZ
¦






. • *'
S
94.0
95.0
93.0
1.00
0.118
94.00
-1.62
-1.04
sc
100.0
108.0
105.0
4.04
0.473
104.33
0.17
0.75
SD
107.0
109.0
108.0
1.00
0.118
108.00
0.81
1.39
SF
201.0
19&0
203.0
3.61
0.413
200.00
16.74
17;32 ,, - X
SI
87.0
96.0
100.0
6.66
0.768
94.33
-1.56
-0.98
SM
103.0
115.0
116.0
7.23
0.768
111.33
1.39
1.96
SN
96.0
98.0
99.0
1.53
0.177
97.67
-0.98
-0.40
SR
100.0
103.0
94.0
4.58
0.532
99.00
-0.75
-0.17
ss
99.0
104.0
104.0
2.89
0.295
102.33
-0.17
0.40
sv
100.0
96.0
115.0
10.02
1.233
103.67
0.06
0.64
sx
105.0
99.0
103.0
3.06
0.354
102.33
-0.17
0.40
sz
99.0
100.0
98.0
1.00
0.118
99.00
-0.75
-0.17
T
100.0
102.0
93.0
4.73
0.532
98.33
-0.86
-0.29
TC







. rv-f>
TD
108.0
98.0
110.0
6.43
0.709
105.33
0.35
0.92
TO
114.0
113.0
115.0
1.00
0.118
114.00
1.85
2.42
TQ
106.0
100.0
92.0
7.02
0.827
99.33
-0.69
-0.12
TR
100.0
100.0
95.0
2.89
0.295
98.33
-0.86
-0.29
• =
0 5
No data submitted
Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
ft = Above control limit
= Below control limit
-------
ESD-LV Performance Evaluation: Gamma in Water, 6-Jun-1997
14/37
f
Zinc-65




-




Lab
Res. 1


Exper.
Rng anal

Normalized deviation

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








Cx- c ^
U ,








UP
115.0
114.0
116.0
1.00
0.118
115.00
2.02
2.60

UR
64.0
62.0
630
1.00
0.118
63.00
-6.98
-6,41

uv
90.0
97.0
100.0
5.13
0.591
95.67
-1.33
-0.75

ux
105.0
111.0
109.0
3.06
0.354
108.33
0.87
1.44

:;VAv:









vc
106.0
105.0
106.0
0.58
0.059
105.67
0.41
0.98

VE
106.0
122.0
92.0
15.01
2.470
106.67
0.58
1.15

VH
104.0
100.0
106.0
3.06
0.354
103.33
0.00
0.58

VI
109.0
106.0
111.0
2.52
0.295
108.67
0.93
1.50

VM
100.0
100.0
100.0
0.00
0.000
100.00
-0.58
0.00

vo
96.0
105.0
100.0
4.51
0.532
100.33
-0.52
0.06

vs
96.0
94.0
98.0
2.00
0.236
96.00
-1.27
-0.69

w
95.0
104.0
102.0
4.73
0.532
100.33
-0.52
0.06

WD
101.0
107.0
102.0
3.21
0.354
103.33
0.00
0.58











WJ
105.0
105.0
105.0
0.00
0.000
105.00
0.29
0.87

wk
500;
-49.0
52.0
1:53
0:177;
50.35


-'Ti'ZW,
WO
88.0
98.0
104.0
8.08
0.945
96.67
-1.15
-0.58
WR
81.0
89.0
91.0
5.29
0.591
87.00
-2.83
-2.25

'•ws^
4ZiO
41.0
410
>0.58,;
0.059
41,33
,1074;:
-10116

wv
119.0
102^0
113.0
8.62
1.008
111.33
1.39
1.96

WW
85.0
87.0
85.0
1.15
0.118
85.67
-3.06
-2.48

•wxg








Pf
X
94.0
106.0
106.0
6.93
0.709
102.00
-0.23
0.35

XA
109.0
113.0
104.0
4.51
0.532
108.67
0.93
1.50

XB
83.0
104.0
99.0
10.97
1.458
95.33
-1.38
-0.81

XC
117.0
120.0
119.0
1.53
0.177
118.67
2.66
3.23
IT
XD
103.0
110.0
101.0
4.73
0.532
104.67
0.23
0.81

XF
108.0
110.0
111.0
1.53
0.177
109.67
1.10
1.67

XG
107.0
108.0
101.0
3.79
0.413
105.33
0.35
0.92

Y
96.0
108.0
96.0
6.93
0.709
100.00
-0.58
0.00

Data sorted by Laboratory Average
Average
Tag
Lab
Average Tag
Lab
Average
Tag Lab
7.00
X
MV
92.67
OM
95.67
UV
41.33
X
WS
93.67
AW
96.00
VS
50.33
X
WK
94.00
S
96.00
DH
63.00
X
UR
94.33
SI
96.67
WO
81.33
X
JG
94.33
EA
97.00
PX
85.67

WW
94.67
AI
97.33
NP
87.00

WR
95.33
XB
97.33
HL
91.00

RX
95.33
P
97.67
SN
91.67

CC
95.33
KH
98.00
LR
• s No data submitted

TAG SYMBOLS

IT
s Above control limit
0 = Insufficient data

x = Determined to be an outlier
U
ee Below control limit
-------
15 / 37	ESD-LV Performance Evaluation: Gamma in Water, 6-Jun-1997
Zinc-65
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
98.00

KX
102.67

BC
107.00

JY
98.00

K
102.67

AP
107.00

BK
98.33

TR
103.00

QX
107.00

BG
98.33

T
103.00

KL
107.00

BA
98.33

MX
103.00

JM
107.00

AY
98.67

EL
103.00

A
108.00

SD
98.67

AU
103.33

WD
108.00

NJ
99.00

SZ
103.33

VH
108.00

BO
99.00

SR
103.33

BN
108.33

UX
99.00

BL
103.67

sv
108.33

CX
99.33

TQ
103.67

QP
108.67

XA
99.33

E
103.67

L
108.67

VI
99.33

CJ
104.00

D
109.00

Qz
99.67

CE
104.33

SC
109.00

BB
100.00

Y
104.33

R
109.00

AF
100.00

VM
104.33

OA
109.67

XF
100.00

O
104.33

M
110.00

RO
100.00

FE
104.33

LE
110.00

DT
100.00

EX
104.67

XD
110.67

GQ
100.00

CP
104.67

QM
111.00

PB
100.33

W
104.67

JS
111.00

MT
100.33

VO
105.00

WJ
111.00

AZ
100.33

PW
105.00

LT
111.33

WV
100.33

MP
105.00

FL
111.33

SM
100.33

EB
105.33

XG
111.33

QW
100.67

OT
105.33

TD
111.67

NH
100.67

N
105.33

HK
112.00

BH
101.00

CA
105.67

VC
113.00

QU
101.00

AE
105.67

Q
113.00

AL
101.33

EW
105.67

NK
114.00

TO
101.67

QT
105.67

BM
114.00

HP
101.67

DD
106.00

DE
114.67

PM
101.67

C
106.33

CO
114.67

JE
101.67

AJ
106.33

AK
115.00

UP
102.00

X
106.67

VE
116.67

CS
102.33

sx
106.67

LF
. 118.67
It
XC
102.33

ss
106.67

GL
200.00
X
SF
102.33

I
106.67

FJ
407.00
X
IU
102.33

DR
106.67

DO
650.00
X
NO
• = No data submitted	TAG SYMBOLS	IT = Above control limit
0 = Insufficient data	x = Determined to be an outlier	It = Below control limit
-------
f	==			
ESD-LV Performance Evaluation: Gamma in Water, 6-Jun-1997	.16/37
Zinc-65
% responding labs Frequency distribution
104	

IL,	;	,	,	¦ | ¦¦ | 		, - , , , i
-6	-4	-2	0	+2	+4	+6
Normalized deviation of the mean from the known value
% responding labs	Frequency distribution
10-
i	• ,	i ¦	y	¦¦ j	,	,	i ^
-6	-4	-2	0	+2	+4	+6
Normalized deviation of the mean from the grand average
-------
ESD-LV Performance Evaluation: Gamma in Water, 6- Jun-1997
17/37
Cesium-134	Statistical Summary	168 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
23(13.7 %) Failed to respond
; 138(82.1 %) Within all limits
'v
•	w.
•	\ K
•	K
•	\J X
• \ >v
• NJ\.

1 (0.6 %) In warning zone
6(3.6 %) Outliers •"
r
I I
but within control
Statistic
Respondents
Non-outliers
Mean
21.49
Grand Avg 20.17
Std. Dev.
13.66
1.86
Variance
186.68
3.44
% Coef. of Var.
63.57
9.20
% deviation of mean from known value
-2.31
-8.32
Norm. dev. of mean from known value
-0.04
-0.99
Median
20.00
20.00
% deviation of median from known value
-9.09
-9.09
Norm. dev. of median from known value
-0.15
-1.08
6(4.1 %) More than 3 norm. S.D.
1(0.7 %) Between 2 and 3 norm. S.D.'
; 96(66.2 %) Within 1 norm. S.D.
¦
of known value
•42(29.0 %) Between 1 and 2 norm. S.D.
-------
18 / 37	ESD-LV Performance Evaluation: Gamma in Water, 6-Jun-1997
Cesium-134
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
A
22.0
21.0
23.0
1.00
0.236
22.00
0.63
0.00
AE
21.0
21.0
20.0
0.58
0.118
20.67
0.17
-0.46
AF
19.0
23.0
21.0
2.00
0.473
21.00
0.29
-0.35
AH







• -• A
AI
19.0
18.0
18.0
0.58
0.118
18.33
-0.64
-1.27
AJ
19.0
19.0
19.0
0.00
0.000
19.00
-0.41
-1.04
AK
23.0
20.0
22.0
1.53
0.354
21.67
0.52
-0.12
AL
22.0
23.0
29.0
3.79
0.827
24.67
1.56
0.92
AP
26.0
24.0
20.0
3.06
0.709
23.33
1.10
0.46
AU
19.0
17.0
20.0
1.53
0.354
18.67
-0.52
-1.15
AW
20.0
20.0
20.0
0.00
0.000
20.00
-0.06
-0.69
AY
22.0
25.0
21.0
2.08
0.473
22.67
0.86
0.23
AZ
24.0
22.0
21.0
1.53
0.354
22.33
0.75
0.12
BA
22.0
23.0
20.0
1.53
0.354
21.67
0.52
-0.12
BB
21.0
22.0
23.0
1.00
0.236
22.00
0.63
0.00
BC
23.0
22.0
22.0
0.58
0.118
22.33
0.75
0.12
BG
20.0
21.0
20.0
0.58
0.118
20.33
0.06
-0.58
BH
22.0
21.0
23.0
1.00
0.236
22.00
0.63
0.00
BK
19.0
20.0
19.0
0.58
0.118
19.33
-0.29
-0.92
BL
22.0
19.0
20.0
1.53
0.354
20.33
0.06
-0.58
BM
22.0
21.0
20.0
1.00
0.236
21.00
0.29
-0.35
BN
21.0
19.0
19.0
1.15
0.236
19.67
-0.17
-0.81
BO
24.0
23.0
22.0
1.00
0.236
23.00
0.98
0.35
C
24.0
23.0
24.0
0.58
0.118
23.67
1.21
0.58
CA
20.0
19.0
20.0
0.58
0.118
19.67
-0.17
-0.81
CC
18.0
18.0
18.0
0.00
0.000
18.00
-0.75
-1.39
CE
19.0
20.0
21.0
1.00
0.236
20.00
-0.06
-0.69
CJ
18.0
18.0
20.0
1.15
0.236
18.67
-0.52
-1.15
CM







•V- *
CO
21.0
22.0
18.0
2.08
0.473
20.33
0.06
-0.58
CP
20.0
15.0
18.0
2.52
0.591
17.67
-0.87
-1.50
CS
19.0
17.0
21.0
2.00
0.473
19.00
-0.41
-1.04
CX
23.0
19.0
21.0
2.00
0.473
21.00
0.29
-0.35
D
20.0
20.0
20.0
0.00
0.000
20.00
-0.06
-0.69
DD
22.0
22.0
21.0
0.58
0.118
21.67
0.52
-0.12
DE
24.0
24.0
25.0
0.58
0.118
24.33
1.44
0.81
DH
21.0
21.0
21.0
0.00
0.000
21.00
0.29
-0.35
DO
22.0
24.0
19.0
2.52
0.591
21.67
0.52
-0.12
DR
18.0
20.0
21.0
1.53
0.354
19.67
-0.17
-0.81
DT
16.0
18.0
17.0
1.00
0.236
17.00
-1.10
-1.73
DZ








E
20.0
20.0
22.0
1.15
0.236
20.67
0.17
-0.46
EA
22.0
21.0
21.0
0.58
0.118
21.33
0.40
-0.23
EB
18.0
18.0
18.0
0.00
0.000
18.00
-0.75
-1.39
EL
22.0
21.0
18.0
2.08
0.473
20.33
0.06
-0.58
• =
0 s
No data submitted
Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
IT 3 Above control limit
JJ. = Belbw control limit ,
-------
ESD-LV Performance Evaluation: Gamma in Water, 6-Jun-1997
19/37
~ 	
Cesium-134
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
EW
21.0
18.0
19.0
1.53
0.354
19.33
-0.29
-0.92

EX
20.0
19.0
17.0
1.53
0.354
18.67
-0.52
-1.15
,
FE
21.0
17.0
18.0
2.08
0.473
18.67
-0.52
-1.15
|
FJ
21.0
21.0
21.0
0.00
0.000
21.00
0.29
-0.35

FL
21.0
21.0
19.0
1.15
0.236
20.33
0.06
-0.58











GL
19.0
19.0
18.0
0.58
0.118
18.67
-0.52
-1.15

GQ
19.0
20.0
20.0
0.58
0.118
19.67
-0.17
-0.81
,
HI








WW
HK
21.0
22.0
21.0
0.58
0.118
21.33
0.40
-0.23

HL
21.0
22.0
22.0
0.58
0.118
21.67
0.52
-0.12

HP
21.0
21.0
21.0
0.00
0.000
21.00
0.29
-0.35

;:hx;':;









i
19.0
18.0
21.0
1.53
0.354
19.33
-0.29
-0.92
i
y>"mf 'y
84;0
86XK
85S)
too
p36
i£oa
•* y--*
22.46
2ili

JE
21.0
21.0
20.0
0.58
0.118
20.67
0.17
-0.46

JG
17.0
17.0
17.0
0.00
0.000
17.00
-1.10
-1.73

JM
19.0
19.0
20.0
0.58
0.118
19.33
-0.29
-0.92

JS
21.0
20.0
20.0
0.58
0.118
20.33
0.06
-0.58

JY
21.0
22.0
23.0
1.00
0.236
22.00
0.63
0.00

K
18.0
20.0
18.0
1.15
0.236
18.67
-0.52
-1.15

KH
19.0
18.0
19.0
0.58
0.118
18.67
-0.52
-1.15
i
KL
22.0
22.0
21.0
0.58
0.118
21.67
0.52
-0.12
1
KX
19.0
20.0
19.0
0.58
0.118
19.33
-0.29
-0.92

L
20.0
22.0
21.0
1.00
0.236
21.00
0.29
-0.35

LE
29.0
32.0
26.0
3.00
0.709
29.00
3.06
2.42

LF
22.0
20.0
19.0
1.53
0.354
20.33
0.06
-0.58

LR
18.0
18.0
19.0
0.58
0.118
18.33
-0.64
-1.27

LT
19.0
20.0
19.0
0.58
0.118
19.33
-0.29
-0.92

M
18.0
18.0
19.0
0.58
0.118
18.33
-0.64
-1.27

MP
.21.0
23.0
21.0
1.15
0.236
21.67
0.52
-0.12

MT
21.0
21.0
21.0
0.00
0.000
21.00
0.29
-0.35

!mv1
P&Ql


0.00
oM>

1-5.26-:'


MX
20.0
20.0
21.0
0.58
0.118
20.33
0.06
-0.58

N
21.0
21.0
21.0
0.00
0.000
21.00
0.29
-0.35

NH
18.0
18.0
18.0
0.00
0.000
18.00
-0.75
-1.39

NJ
17.0
21.0
21.0
2.31
0.473
19.67
-0.17
-0.81

NK
19.0
19.0
20.0
0.58
0.118
19.33
-0.29
-0.92


16®
wy- -S-*
/:166.0r
173p
4.93

wfW



NP
16.0
18.0
19!o
1.53
0.354
17.67
-0.87
-i.50

O
20.0
20.0
20.0
0.00
0.000
20.00
-0.06
-0.69

OA
20.0
20.0
20.0
0.00
0.000
20.00
-0.06
-0.69










<¦*¦ ^, r\ .s.
6 m
19.0
20.0
20.0
0.58
0.118
19.67
-0.17
-0.81

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

20/37
v
ESD-LV Performance Evaluation: Gamma in Water,
6-Jun-1997


'
Cesium-134







N
Lab
Res. 1


Exper.
Rng anal

Normalized deviation

Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
OT
20.0
20.0
17.0
1.73
0.354
19.00
-0.41
-1.04

P
24.0
17.0
20.0
3.51
0.827
20.33
0.06
-0.58

PB
20.0
19.0
20.0
0.58
0.118
19.67
-0.17
-0.81

PD








•
PE








. •
PM
21.0
19.0
18.0
1.53
0.354
19.33
-0.29
-0.92

PQ








• .
PTJ








•
PW
20.0
19.0
20.0
0.58
0.118
19.67
-0.17
-0.81

PX
22.0
20.0
22.0
1.15
0.236
21.33
0.40
-0.23

Q
19.0
20.0
21.0
1.00
0.236
20.00
-0.06
-0.69

QM
17.0
21.0
18.0
2.08
0.473
18.67
-0.52
-1.15

QP
20.0
18.0
21.0
1.53
0.354
19.67
-0.17
-0.81

QT
19.0
20.0
19.0
0.58
0.118
19.33
-0.29
-0.92

QU
15.0
17.0
20.0
2.52
0.591
17.33
-0.98
-1.62

QW
17.0
17.0
17.0
0.00
0.000
17.00
-1.10
-1.73

QX
21.0
19.0
20.0
1.00
0.236
20.00
-0.06
-0.69

QZ
18.0
19.0
20.0
1.00
0.236
19.00
-0.41
-1.04

R
22.0
20.0
22.0
1.15
0.236
21.33
0.40
-0.23

KF








" •• "
RH








•
RK








•
RO
21.0
20.0
20.0
0.58
0.118
20.33
0.06
-0.58

RR








•
RU
22.0
25.0
25.0
1.73
0.354
24.00
1.33
0.69

RX
21.0
22.0
21.0
0.58
0.118
21.33
0.40
-0.23

RZ








•
S
19.0
19.0
18.0
0.58
0.118
18.67
-0.52
-1.15

sc
18.0
20.0
17.0
1.53
0.354
18.33
-0.64
-1.27

SD
21.0
20.0
21.0
0.58
0.118
20.67
0.17
-0.46

SF
35.0
38.0
40.0
2.52
0.591
.37.67
6.06
5.43 ¦
X
SI
20.0
21.0
15.0
3.21
0.709
18.67
-0.52
- -1.15

SM
23.0
23.0
19.0
2.31
0.473
21.67
0.52
-0.12

SN
21.0
20.0
21.0
0.58
0.118
20.67
0.17
-0.46

SR
24.0
20.0
19.0
2.65
0.591
21.00
0.29
-0.35

ss
18.0
17.0
17.0
0.58
0.118
17.33
-0.98
-1.62

sv
18.0
14.0
20.0
3.06
0.709
17.33
-0.98
-1.62

sx
19.0
20.0
20.0
0.58
0.118
19.67
-0.17
-0.81

sz
20.0
18.0
19.0
. 1.00
0.236
19.00
-0.41
-1.04

T
22.0
19.0
21.0
1.53
0.354
20.67
0.17
-0.46

TC








• f
TD
17.0
17.0
18.0
0.58
0.118
17.33
-0.98
-1.62

TO
26.0
25.0
27.0
1.00
0.236
26.00
2.02
1.39

TQ
16.0
19.0
19.0
1.73
0.354
18.00
-0.75
-1.39

TR
19.0
19.0
17.0
1.15
0.236
18.33
-0.64
-1.27

• = No data submitted

TAG SYMBOLS

1T = Above control limit
0 = Insufficient data	x = Determined to be an outlier	JJ- = Below control limit J
-------
ESD-LV Performance Evaluation: Gamma in Water, 6-Jun-1997
21/37
Cesium-134
Lab
Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known)
TS








u •








UP
2U.U
19.0
21.0
1.00
0.236
20.00
-0.06
-0.69
UR
24.0
21.0
22.0
1.53
0.354
22.33
0.75
0.12
UV
18.0
18.0
20.0
1.15
0.236
18.67
-0.52
-1.15
UX
20.0
19.0
20.0
0.58
0.118
19.67
-0.17
-0.81
VA








yc
19.0
20.0
21.0
1.00
0.236
20.00
-0.06
-0.69
VE
22.0
21.0
22.0
0.58
0.118
21.67
0.52
-0.12
VH
22.0
21.0
23.0
1.00
0.236
22.00
0.63
0.00
VI
19.0
21.0
20.0
1.00
0.236
20.00
-0.06
-0.69
VM
19.0
19.0
19.0
0.00
0.000
19.00
-0.41
-1.04
VO
21.0
20.0
24.0
2.08
0.473
21.67
0.52
-0.12
vs
20.0
17.0
19.0
1.53
0.354
18.67
-0.52
-1.15
w
22.0
20.0
19.0
1.53
0.354
20.33
0.06
-0.58
WD
19.0
18.0
16.0
1.53
0.354
17.67
-0.87
-1.50
WI








WJ
20.0
19.0
20.0
0.58
0.118
19.67
-0.17
-0.81
WK
ll'Ot
10.0
110
0.58
0.118
10.67
-3;29;
r3 i)3
WO
15.0
19.0
19.0
2.31
0.473
17.67
-0.87
-1.50
WR
20.0
21.0
22.0
1.00
0.236
21.00
0.29
-0.35
WS
: 7;0
70
7.0
0.00;
o.poo
7M
4i66
-52%
WV
20.0
20.0
20.0
0.00
0.000
20.00
-0.06
-0.69
WW
18.0
17.0
17.0
0.58
0118
17.33
-0.98
-1.62
WX








X
19.0
180
21.0
1.53
0.354
19.33
-0.29
-0.92
XA
23.0
21.0
19.0
2.00
0.473
21.00
0.29
-0.35
XB
23.0
20.0
27.0
3.51
0.827
23.33
1.10
0.46
XC
18.0
18.0
19.0
0.58
0.118
18.33
-0.64
-1.27
XD
20.0
20.0
20.0
0.00
0.000
20.00
-0.06
-0.69
XF
19.0
19.0
19.0
0.00
0.000
19.00
-0.41
-1.04
XG
23.0
24.0
24.0
0.58
0.118
23.67
1.21
0.58
Y
19.0
20.0
19.0
0.58
0.118
19.33
-0.29
-0.92
Data sorted by Laboratory Average
Average
Tag
Lab
Average Tag
Lab
Average
Tag Lab
5.00
X
MV
17.33
SS
18.00
CC
7.00
X
WS
17.33
QU
18.33
XC
10.67
X
WK
. 17.67
wo
18.33
TR
17.00

QW
17.67
WD
18.33
sc
17.00

JG
17.67
NP
18.33
M
17.00

DT
17.67
CP
18.33
LR
17.33

WW
18.00
TQ
18.33
AI
17.33

TD
18.00
NH
18.67
VS
17.33
*
SV
18.00
EB
18.67
UV
• s No data submitted

TAG SYMBOLS

IT
= Above control limit
0 = Insufficient data

x s Determined to be an outlier
H
= Below control limit


\fX.~K
5W

-------
ESD-LV Performance Evaluation: Gamma in Water, 6- Jun-1997
s 			
Cesium-134






¦<
Average Tag
Data sorted by Laboratory Averaj



Lab
Average
Tag
Lab
Average
Tag
Lab
18.67
SI
19.67

BN
21.00

CX
18.67
s
20.00

XD
21.00

BM
18.67
QM
20.00

WV
21.00

AF
18.67*
KH
20.00

VI
21.33

RX
18.67
K
20.00

VC
21.33

R
18.67
GL
20.00

UP
21.33

PX
18.67
FE
20.00

QX
21.33

HK
18.67
EX
20.00

Q
21.33

EA
18.67
CJ
20.00

OA
21.67

VO
18.67
AU
20.00

O
21.67

VE
19.00
XF
20.00

D
21.67

SM
19.00
VM
20.00

CE
21.67

MP
19.00
SZ
20.00

AW
21.67

KL
19.00
QZ
20.33

W
21.67

HL
19.00
OT
20.33

RO
21.67

DO
19.00
CS
20.33

P
21.67

DD
19.00
AJ
20.33

MX
21.67

BA
19.33
Y
20.33

LF
21.67

AK
19.33
X
20.33

JS
22.00

VH
19.33
QT
20.33

FL
22.00

JY
19.33
PM
20.33

EL
22.00

BH
19.33
NK
20.33

CO
22.00

BB
19.33
LT
20.33

BL
22.00

A
19.33
KX
20.33

BG
22.33

UR
19.33
JM
20.67

T
22.33

BC
19.33
I
20.67

SN
22.33

AZ
19.33
EW
20.67

SD
22.67

AY
19.33
BK
20.67

JE
23.00

BO
19.67
WJ
20.67

E
23.33

XB
19.67
UX
20.67

AE
23.33

AP
19.67
sx
21.00

XA
23.67

XG
19.67
QP
21.00

WR
23.67

C
19.67
PW
21.00

SR
24.00

RU
19.67
PB
21.00

N
24.33

DE
19.67
OM
21.00

MT
24.67

AL
19.67
NJ
21.00

L
26.00

TO
19.67
GQ
21.00

HP
29.00

LE
19.67
DR
21.00

FJ
37.67
X
SF
19.67
CA
21.00

DH
85.00
X
IU





167.33
X
NO
• = No data submitted

TAG SYMBOLS

rr
= Above control limit
0 = Insufficient data
	

x s Determined to be an outlier
n
= Below control limit J
-------
ESD-LV Performance Evaluation: Gamma in Water, 6-Jun-1997	23 / 37
Cesium-134
% responding labs	 Frequency distribution
104
0
it
iliiiL-
t-	»T	T	1	, IWMfWMMllT ¦	1—		r-	1	1—-	!-»
"6	-4	-2	0	+2	+4	+6
Normalized deviation of the mean from the known value
% responding labs	Frequency distribution
10-

I	I 	1 " I	1	T	T	I	1	
-6	-4	-2	0	+2	+4	+6
Normalised deviation of the mean from the grand average
-------
ESD-LV Performance Evaluation: Gamma in Water, 6-Jun-1997
24/37
Cesium-137	Statistical Summary	168 Participants
The known value of this nuclide is 49.0 pCi/1 with an expected precision of 5.0; the control limits
are 40.3 to 57.7; the warning regions are 40.3 to 43.2 and 54.8 to 57.7
22(13.1 %) Failed to respond
132(78.6 %) Within all limits
8(4.8 %) Outliers * / NV.
V

2(1.2 %) Out of control •

4(2.4 %) In warning zone
but not an outlier
I I
but within control
Statistic
Respondents
Non-outliers
Mean
53.18
• Grand Avg 49.97
Std. Dev.
34.63
2.81
Variance
1199.27
7.89
% Coef. ofVar.
65.11
5.62
% deviation of mean from known value
8.54
1.99
Norm. dev. of mean from known value
0.12
0.35
Median
50.00
50.00
% deviation of median from known value
2.04
2.04
Norm. dev. of median from known value
0.03
0.36
12(8.2 %) More than 3 norm. S.D.
2(1.4 %) Between 2 and 3 norm. S.D. *
• 92(63.0 %) Within 1 norm. S.D.
of known value
40(27.4 %) Between 1 and 2 norm. S.D.
-------
25/37
ESD-LV Performance Evaluation: Gamma in Water,
6-Jun-1997

Cesium-137






-
Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
A
49.0
48.0
47.0
1.00
0.236
48.00
-0.68
-0.35
AE
50.0
46.0
50.0
2.31
0.473
48.67
-0.45
-0.12
AF
55.0
52.0
48.0
3.51
0.827
51.67
0.59
0.92
AH







' v r
At
45.0
45.0
46.0
0.58
0.118
45.33
-1.61
-1.27
AJ
48.0
49.0
48.0
0.58
0.118
48.33
-0.57
-0.23
AK
55.0
54.0
54.0
0.58
0.118
54.33
1.51
1.85
AL
49.0
53.0
55.0
3.06
0.709
52.33
0.82
1.15
AP
50.0
49.0
52.0
1.53
0.354
50.33
0.12
0.46
AU
46.0
48.0
47.0
1.00
0.236
47.00
-1.03
-0.69
AW
49.0
48.0
49.0
0.58
0.118
48.67
-0.45
-0.12
AY
54.0
54.0
55.0
0.58
0.118
54.33
1.51
1.85
AZ
56.0
54.0
49.0
3.61
0.827
53.00
1.05
1.39
BA
50.0
50.0
45.0
2.89
0.591
48.33
-0.57
-0.23
BB
47.0
48.0
50.0
1.53
0.354
48.33
-0.57
-0.23
BC
48.0
46.0
51.0
2.52
0.591
48.33
-0.57
-0.23
BG
38.0
40.0
43.0
2.52
0.591
40.33
-3.34
-3.00
BH
51.0
53.0
53.0
1.15
0.236
52.33
0.82
1.15
BK
50.0
49.0
50.0
0.58
0.118
49.67
-0.11
0.23
BL
49.0
48.0
48.0
0.58
0.118
48.33
-0.57
-0.23
BM
49.0
5i.O
50.0
1.00
0.236
50.00
0.01
0.35
BN
47.0
46.0
50.0
2.08
0.473
47.67
-0.80
-0.46
BO
53.0
53.0
51.0
1.15
0.236
52.33
0.82
1.15
C
47.0
47.0
48.0
0.58
0.118
47.33
-0.91
-0.58
CA
54.0
50.0
52.0
2.00
0.473
52.00
0.70
1.04
CC
46.0
45.0
46.0
0.58
0.118
45.67
-1.49
-1.15
CE
52.0
48.0
51.0
2.08
0.473
50.33
0.12
0.46
CJ
49.0
49.0
48.0
0.58
0.118
48.67
-0.45
-°12
•CM"".








CO
50.0
51.0
50.0
0.58
0.118
50.33
0.12
0.46
CP
59.0
58.0
52.0
3.79
0.827
56.33
2.20
2.54
cs
58.0
60.0
55.0
2.52
0.591
57.67
2.67
3.00
cx
50.0
56.0
53.0
3.00
0.709
53.00
1.05
1.39
D
50.0
49.0
50.0
0.58
0.118
49.67
-0.11
0.23
DD
48.0
50.0
48.0
1.15
0.236
48.67
-0.45
-0.12
DE
52.0
52.0
54.0
1.15
0.236
52.67
0.93
1.27
DH
51.0
52.0
50.0
1.00
0.236
51.00
0.36
0.69
DO
44.0
43.0
49.0
3.21
0.709
45.33
-1.61
-1.27
DR
49.0
53.0
51.0
2.00
0.473
51.00
0.36
0.69
DT
47.0
52.0
46.0
3.21
0.709
48.33
-0.57
-0.23
5>zg








V
51.0
48.0
50.0
1.53
0.354
49.67
-0.11
0.23
EA
48.0
48.0
48.0
0.00
0.000
48.00
-0.68
-0.35
EB
49.0
50.0
51.0
1.00
0.236
50.00
0.01
0.35
EL
49.0
49.0
48.0
0.58
0.118
48.67
-0.45
-0.12
• s 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
-------
ESD-LV Performance Evaluation: Gamma in Water, 6-Jun-1997
26/37
Cesium-137
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known)
EW
50.0
54.0
51.0
2.08
0.473
51.67
0.59
0.92
EX
44.0
42.0
51.0
4.73
1.120
45.67
-1.49
-1.15
FE
50.0
46.0
42.0
4.00
0.945
46.00
-1.38
-1.04
FJ
51.0
50.0
49.0
1.00
0.236
50.00
0.01
0.35
FL
52.0
52.0
52.0
0.00
0.000
52.00
0.70
1.04
'¦Gl:c








GL
47.0
51.0
46.0
2.65
0.591
48.00
-0.68
-0.35
GQ
50.0
51.0
51.0
0.58
0.118
50.67
0.24
0.58
HI








HK
54.0
54.0
52.0
1.15
0.236
53.33
1.16
1.50
HL
50.0
54.0
53.0
2.08
0.473
52.33
0.82
1.15
HP
54.0
55.0
53.0
1.00
0.236
54.00
1.39
1.73
HX








I
49.0
54.0
50.0
2.65
0.591
51.00
0.36
0.69
:iui
¦ J -v
mol

y v«,Wj
206,0
%52
p91
, w. s «> .
205.67^
®3|
54;27^
V ¦.
JE
52.0
52.0
52.0
0.00
0.000
52.00
0.70
1.04
JG
42.0
39.0
44.0
2.52
0.591
41.67
-2.88
-2.54
JM
52.0
52.0
52.0
0.00
0.000
52.00
0.70
1.04
JS
51.0
52.0
49.0
1.53
0.354
50.67
0.24
0.58
JY
51.0
51.0
50.0
0.58
0.118
50.67
0.24
0.58
K
44.0
44.0
46.0
1.15
0.236
44.67
-1.84
-1.50
KH
50.0
49.0
50.0
0.58
0.118
49.67
-0.11
0.23
KL
52.0
53.0
55.0
1.53
0.354
53.33
1.16
1.50
KX
48.0
52.0
50.0
2.00
0.473
50.00
0.01
0.35
L
52.0
51.0
50.0
1.00
0.236
51.00
0.36
0.69
LE
80 0

65.0
11.24
4046!
67^87^
y.>N. ..W,V
[6-. 13;'^
6A7
LF
53.0
50.0
54.0
2.08
0.473
52.33
0.82
1.15
LR
52.0
48.0
50.0
2.00
0.473
50.00
0.01
0.35
LT
49.0
48.0
48.0
0.58
0.118
48.33
-0.57
-0.23
M
52.0
51.0
52.0
0.58
0.118
51.67
0.59
0.92
MP
48.0
49.0
47.0
1.00
0.236
48.00
-0.68
-0.35
MT
53.0
53.0
53.0
0.00
0.000
53.00
1.05
1.39
MV
, 5-9
ws


;0.236 i
¦>' ::-y
1^6^33-
-15,12
A*.
-14,78
MX
51.0
50.0
51.0
0.58
0.118
50.67
0.24
0.58
N
51.0
49.0
51.0
1.15
0.236
50.33
0.12
0.46
NH
50.0
51.0
50.0
0.58
0.118
50.33
0.12
0.46
NJ
49.0
52.0
52.0
1.73
0.354
51.00
0.36
0.69
NK
52.0
49.0
51.0
1.53
0.354
50.67
0.24
0.58
" "rv>- **v"5
NO
420.0
423,0}
440.0
10.79"
3.596 C
427.67
130.84
131.17
NP
45.0
53.0
49.0
4.00
0.945
49.00
-0.34
0.00
O
50.0
50.0
50.0
0.00
0.000
50.00
0.01
0.35
OA
50.0
51.0
49.0
1.00
0.236
50.00
0.01
0.35
OB
51.0
51.0
51.0
0.00
0.000
51.00
0.36
0.69
OM
49.0
49.0
50.0
0.58
0.118
49.33
-0.22
0.12



Xt 1
»» ^ *

mi
xr1'
0 S
No data submitted
Insufficient data
x s
TAG SYMBOLS
Determined to be an outlier
IT = Above control limit
JJ = Below control limit
-------
f	



• =




	
211 SI
*
ESD-LV Performance Evaluation: Gamma in Water,
6-Jmi-1997


Cesium-137








Lab
Res. 1


Exper.
Rng anal

Normalized deviation

Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
OT
46.0
44.0
49.0
2.52
0.591
46.33
-1.26
-0.92

P
49.0
51.0
50.0
1.00
0.236
50.00
0.01
0.35

PB
51.0
50.0
50.0
0.58
0.118
50.33
0.12
0.46

PD









PE








*
PM
56.0
52.0
47.0
4.51
1.120
51.67
0.59
0.92

PQ








* • ''
FU









PW
51.0
48.0
48.0
1.73
0.354
49.00
-0.34
0.00

PX
46.0
44.0
47.0
1.53
0.354
45.67
-1.49
-1.15

Q
48.0
48.0
48.0
0.00
0.000
48.00
-0.68
-0.35

QM
53.0
50.0
55.0
2.52
0.591
52.67
0.93
1.27

QP
49.0
56.0
49.0
4.04
0.827
51.33
0.47
0.81

QT
47.0
51.0
48.0
2.08
0.473
48.67
-0.45
-0.12

QU
51.0
53.0
57.0
3.06
0.709
53.67
1.28
1.62

QW
53.0
53.0
55.0
1.15
0.236
53.67
1.28
1.62

QX
51.0
52.0
51.0
0.58
0.118
51.33
0.47
0.81

QZ
48.0
49.0
49.0
0.58
0.118
48.67
-0.45
-0.12

R
52.0
53.0
53.0
0.58
0.118
52.67
0.93
1.27

KF









EH









UK









RO
49.0
53.0
50.0
2.08
0.473
50.67
0.24
0.58

KR








" •'
RU
51.0
45.0
50.0
3.21
0.709
48.67
-0.45
-0.12

RX
48.0
50.0
49.0
1.00
0.236
49.00
-0.34
0.00

RZ








• s
S
48.0
49.0
47.0
1.00
0.236
48.00
-0.68
-0.35

sc
49.0
49.0
50.0
0.58
0.118
49.33
-0.22
0.12

SD
52.0
53.0
53.0
0.58
0.118
52.67
0.93
1.27

SF
103.0
99.0
99.0
2.31
0.473
100.33
17.46 .
17.78

SI
43.0
42.0
54.0
6.66
1.795
46.33
-1.26
-0.92

SM
49.0
56.0
53.0
3.51
0.827
52.67
0.93
1.27

SN
49.0
49.0
47.0
1.15
0.236
48.33
-0.57
-0.23

SR
50.0
50.0
50.0
0.00
0.000
50.00
0.01
0.35

SS
53.0
52.0
51.0
1.00
0.236
52.00
0.70
1.04

sv
46.0
43.0
47.0
2.08
0.473
45.33
-1.61
-1.27

sx
44.0
44.0
45.0
0.58
0.118
44.33
-1.95
-1.62

sz
50.0
50.0
48.0
1.15
0.236
49.33
-0.22
0.12

T
49.0
54.0
49.0
2.89
0.591
50.67
0.24
0.58

TC









TD
47.0
49.0
50.0
1.53
0.354
48.67
-0.45
-0.12

TO
58.0
57.0
59.0
1.00
0.236
58.00
2.78
3.12
1T
TQ
49.0
46.0
50.0
2.08
0.473
48.33
-0.57
-0.23
ft
TR
57.0
65.0
53.0
6.11
1.795
58.33
2.90
3.23
• =
No data submitted

TAG SYMBOLS

IT s Above control limit
La-
Insufficient data
X s
Determined to be an outlier
U s Below control limit
-------
ESD-LV Performance Evaluation: Gamma in Water,
6-Jun-1997
	^
28/37
Cesium-137
Lab
Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
TS







'•J- ^
U ^







rJ
UP
51.0
50.0
51.0
0.58
0.118
50.67
0.24
0.58
UlC
16.0
19.0
18.ii!?:/;
-10,85;
UV
49.0
45.0
48.0
2.08
0.473
47.33
-0.91
-0.58	
ux
51.0
51.0
51.0
0.00
0.000
51.00
0.36
0.69
TVA:'







' • ."1
vc
48.0
49.0
48.0
0.58
0.118
48.33
-0.57
-0.23
VE
53.0
51.0
55.0
2.00
0.473
53.00
1.05
1.39
VH
50.0
49.0
53.0
2.08
0.473
50.67
0.24
0.58
VI
52.0
54.0
49.0
2.52
0.591
51.67
0.59
0.92
VM
45.0
45.0
45.0
0.00
0.000
45.00
-1.72
-1.39
VO
46.0
52.0
55.0
4.58
1.120
51.00
0.36
0.69
vs
45.0
47.0
42.0
2.52
0.591
44.67
-1.84
-1.50
w
47.0
51.0
53.0
3.06
0.709
50.33
0.12
0.46
WD
50.0
54.0
52.0
2.00
0.473
52.00
0.70
104
WI








WJ
48.0
50.0
48.0
1.15
0.236
48.67
-0.45
-0.12
WK
' 27.0'':

£2§3p]
1.53
0364
25^33
:-8;54|
-8.20 ; Kxs'i'
WO
41.0
51.0
51.0
5.77
1.345
47.67
-0.80
-0.46
WR
51.0
51.0
53.0
1.15
0.236
51.67
0.59
0.92
ws
i8.0

19.0
1.00
0.236
lpo
•1L08

WV
58.0
52.0
52.0
3.46
0.709
54.00
1.39
1.73
WW
48.0
47.0
48.0
0.58
0.118
47.67
-0.80
-0.46
;wx::;







?.9'" -
x *
48.0
48.0
53.0
2.89
0.591
49.67
-0.11
0.23
XA
50.0
49.0
46.0
2.08
0.473
48.33
-0.57
-0.23
XB
50.0
49.0
49.0
0.58
0.118
49.33
-0.22
0.12
XC
50.0
51.0
52.0
1.00
0.236
51.00
0.36
0.69
XD
49.0
49.0
48.0
0.58
0.118
48.67
-0.45
-0.12
XF
50.0
49.0
50.0
0.58
0.118
49.67
-0.11
0.23
XG
53.0
54.0
53.0
0.58
0.118
53.33
1.16
1.50
Y
48.0
51.0
47.0
2.08
0.473
48.67
-0.45
-0.12
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
6.33
X
MV
45.00

VM
46.33

OT
17.67
X
UR
45.33

sv
47.00

AU
18.00
X
ws
45.33

DO
47.33

UV
25.33
X
WK
45.33

AI
47.33

C
40.33

BG
45.67

PX
47.67

WW
41.67

JG
45.67

EX
47.67

WO
44.33

sx
45.67

CC
47.67

BN
44.67

vs
46.00

FE
48.00

s
44.67

K
46.33

SI
48.00

Q
• s No data submitted
0 = Insufficient data
TAG SYMBOLS
x = Determined to be an outlier
ft = Above control limit
U = Below control limit J
-------
29 / 37	ESD-LV Performance Evaluation: Gamma in Water, 6-Jun-1997
Cesium-137
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
48.00

MP
49.67

BK
51.67

M
48.00

GL
50.00

SR
51.67

EW
48.00

EA
50.00

P
51.67

AF
48.00

A
50.00

OA
52.00

WD
48.33

XA
50.00

O
52.00

ss
48.33

VC
50.00

LR
52.00

JM
48.33

TQ
50.00

KX
52.00

JE
48.33

SN
50.00

FJ
52.00

FL
48.33

LT
50.00

EB
52.00

CA
48.33

DT
50.00

BM
52.33

LF
48.33

BL
50.33

W
52.33

HL
48.33

BC
50.33

PB
52.33

BO
48.33

BB
50.33

NH
52.33

BH
48.33

BA
50.33

N
52.33

AL
48.33

AJ
50.33

CO
52.67

SM
48.67

Y
50.33

CE
52.67

SD
48.67

XD
50.33

AP
52.67

R
48.67

WJ
50.67

VH
52.67

QM
48.67

TD
50.67

UP
52.67

DE
48.67

RU
50.67

T
53.00

VE
48.67

QZ
50.67

RO
53.00

MT
48.67

QT
50.67

NK
53.00

CX
48.67

EL
50.67

MX
53.00

AZ
48.67

DD
50.67

JY
53.33

XG
48.67

CJ
50.67

JS
53.33

KL
48.67

AW
50.67

GQ
53.33

BK
48.67

AE
51.00

XC
53.67

QW
49.00

RX
51.00

VO
53.67

QU
49.00

PW
51.00

UX
54.00

WV
49.00

NP
51.00

OB
54.00

HP
49.33

XB
51.00

NJ
54.33

AY
49.33

SZ
51.00

L
54.33

AK
49.33

sc
51.00

I
56.33

CP
49.33

OM
51.00

DR
57.67

CS
49.67

XF
51.00

DH
58.00
IT
TO
49.67

X
51.33

QX
58.33
ft
TR
49.67

KH
51.33

QP
67.67
X
LE
49.67

E
51.67

WR
100.33
X
SF
49.67

D
51.67

VI
205.67
X
IU



51.67

PM
427.67
X
NO
• = No data submitted	TAG SYMBOLS	IT = Above control limit
0 = Insufficient data	x g Determined to bejmaatlier	= Below control limit
-------
ESD-LV Performance Evaluation: Gamma in Water, 6-Jun-1997	30 / 37
Cesium-137
% responding labs	Frequency distribution
10-
i.if .itllSjB,
T	T—	1—"~~T —JljlllMafMllB I	¦—T®	1	1	
-6	-4	-2	0	+2	-»4	+6
Normalized deviation of the mean from the known value
responding labs	Frequency distribution
10-
lh.li.1..
mm	, ¦ mm ,			,	,	, I
-6	-4	-2	0	+2	+4	+6
Normalized deviation of the mean from the grand average
-------
ESD-LV Performance Evaluation: Gamma in Water, 6-Jun-1997
31/37
Barium-133	Statistical Summary	168 Participants
The known value of this nuclide is 25.0 pCi/1 with an expected precision of 5.0; the control limits
are 16.3 to 33.7; the warning regions are 16.3 to 19.2 and 30.8 to 33.7
24(14.3 %) Failed to respond
, 130(77.4 %) Within all limits
• \K
» \ \
* \J \
0 \PV
• \ Ps^

*• 5(3.0 %) In warning zone
9(5.4 %) Outliers '
p
1 1
but within control
Statistic
Respondents
Non-outliers
Mean
26.17
Grand Avg 23.74
Std. Dev.
17.71
2.11
Variance
313.49
4.44
% Coef. of Var.
67.65
8.87
% deviation of mean from known value
4.69
-5.05
Norm. dev. of mean from known value
0.07
-0.60
Median
23.83
23.67
% deviation of median from known value
-4.67
-5.33
Norm. dev. of median from known value
-0.07
-0.63
9(6.3 %) More than 3 norm. S.D. .
5(3.5 %) Between 2 and 3 norm. S.D
; 104(72.2 %) Within 1 norm. S.D.
of known value
26(18.1 %) Between 1 and 2 norm. S.D.
-------
((	
32/37
ESD-LV Performance Evaluation: Gamma in Water,
6-Jun-1997
	^
Barium-133







Lab
Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
A
22.0
20.0
23.0
1.53
0.354
21.67
-0.72
-1.15
AE
23.0
24.0
24.0
0.58
0.118
23.67
-0.02
-0.46
AF
AH
230
24.0
25.0
1.00
0.236
24.00
0.09
-0.35
•'' ¦
AI
22.0
22.0
22.0
0.00
0.000
22.00
-0.60
-1.04
AJ
21.0
21.0
21.0
0.00
0.000
21.00
-0.95
-1.39
AK
25.0
25.0
28.0
1.73
0.354
26.00
0.78
0.35
AL
32.0
26.0
36.0
5.03
1.345
31.33
2.63
2.19
AP
20.0
24.0
25.0
2.65
0.591
23.00
-0.26
-0.69
AU
20.0
23.0
24.0
2.08
0.473
22.33
-0.49
-0.92
AW
21.0
22.0
22.0
0.58
0.118
21.67
-0.72
-1.15
AY
22.0
23.0
26.0
2.08
0.473
23.67
-0.02
-0.46
AZ
29.0
25.0
23.0
3.06
0.709
25.67
0.67
0.23
BA
25.0
23.0
27.0
2.00
0.473
25.00
0.44
0.00
BB
24.0
27.0
23.0
2.08
0.473
24.67
0.32
-0.12
BC
24.0
23.0
24.0
0.58
0.118
23.67
-0.02
-0.46
BG
15.0
41.0
30.0
13.05
4.946
28.67
1.71
1.27
BH
22.0
20.0
17.0
2.52
0.591
19.67
-1.41
-1.85
BK
23.0
21.0
22.0
1.00
0.236
22.00
-0.60
-1.04
BL
25.0
23.0
27.0
2.00
0.473
25,00
0.44
0.00
BM
25.0
24.0
23.0
1.00
0.236
24.00
0.09
-0.35
BN
23.0
24.0
22.0
1.00
0.236
23.00
-0.26
-0.69
BO
23.0
26.0
24.0
1.53
0.354
24.33
0.21
-0.23
C
23.0
25.0
25.0
1.15
0.236
24.33
0.21
-0.23
CA
26.0
24.0
24.0
1.15
0.236
24.67
0.32
-0.12
CC
18.0
19.0
19.0
0.58
0.118
18.67
-1.76
-2.19
CE
25.0
24.0
26.0
1.00
0.236
25.00
0.44
0.00
CJ
25.0
22.0
20.0
2.52
0.591
22.33
-0.49
-0.92
CM








CO
24.0
26.0
22.0
2.00
0.473
24.00
0.09
-0.35
CP
30.0
29.0
26.0
2.08
0.473
28.33
1.59
1.15
CS
24.0
24.0
21.0
1.73
0.354
23.00
-0.26
-0.69
CX
23.0
25.0
23.0
1.15
0.236
23.67
-0.02
-0.46
D
25.0
24.0
24.0
0.58
0.118
24.33
0.21
-0.23
DD
25.0
24.0
24.0
0.58
0.118
24.33
0.21
-0.23
DE
25.0
25.0
26.0
0.58
0.118
25.33
0.55
0.12
DH
22.0
23.0
22.0
0.58
0.118
22.33
-0.49
-0.92
DO
23.0
23.0
21.0
1.15
0.236
22.33
-0.49
-0.92
DR
24.0
23.0
24.0
0.58
0.118
23.67
-0.02
-0.46
DT
DZ
26.0
21.0
26.0
2.89
0.591
24.33
0.21
-0.23
E
23.0
24.0
23.0
0.58
0.118
23.33
-0.14
0 58
EA
23.0
23.0
24.0
0.58
0.118
23.33
-0.14
-0.58
EB
23.0
23.0
23.0
0.00
0.000
23.00
-0.26
-0.69
EL
21.0
22.0
21.0
0.58
0.118
21.33
-0.83
-1.27
• =
No data submitted

TAG SYMBOLS

ft s Above control limit
l0s
Insufficient data
x =
Determined to be an outlier
•U == Below control limit
, 	'J
-------
((	








	^

ESD-LV Performance Evaluation: Gamma in Water,
6-Jun-1997
33/37
Barium-133








Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation

Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
EW
28.0
26.0
23.0
2.52
0.591
25.67
0.67
0.23

EX
16.0
23.0
24.0
4.36
0.945
21.00
-0.95
-1.39

FE
24.0
26.0
24.0
1.15
0.236
24.67
0.32
-0.12

FJ
25.0
23.0
26.0
1.53
0.354
24.67
0.32
-0.12

FL
25.0
24.0
26.0
1.00
0.236
25.00
0.44
0.00

GI









GL
21.0
22.0
21.0
0.58
0.118
21.33
-0.83
-1.27

GQ
26.0
26.0
27.0
0.58
0.118
26.33
0.90
0.46

HI









HK
24.0
24.0
23.0
0.58
0.118
23.67
-0.02
-0.46

HL
26.0
27.0
26.0
0.58
0.118
26.33
0.90
0.46

HP
24.0
24.0
26.0
1.15
0.236
24.67
0.32
-0.12

¦>HX'









I
22.0
22.0
23.0
0.58
0.118
22.33
-0.49
-0.92

M;
¦ j
104.0
-lip
99#
5;00
'i.34r
99:00
26 07
25^63
WM
JE
24.0
24.0
25.0
0.58
0.118
24.33
0.21
-0.23

JG
23.0
20.0
20.0
1.73
0.354
21.00
-0.95
-1.39

JM
26.0
22.0
24.0
2.00
0.473
24.00
0.09
-0.35

JS
22.0
22.0
23.0
0.58
0.118
22.33
-0.49
-0.92

JY
25.0
25.0
25.0
0.00
0.000
25.00
0.44
0.00

K
21.0
23.0
23.0
1.15
0.236
22.33
-0.49
-0.92

KH
25.0
25.0
26.0
0.58
0.118
25.33
0.55
0.12

KL
25.0
26.0
23.0
1.53
0.354
24.67
0.32
-0.12

KX
23.0
24.0
24.0
0.58
0.118
23.67
-0.02
-0.46

L
22.0
24.0
25.0
1.53
0.354
23.67
-0.02
-0.46

~il









LF
25.0
25.0
25.0
0.00
0.000
25.00
0.44
0.00

LR
12.0


3.61
0.827
15.00.

MM

LT
22.0
24.0
24.0
1.15
0.236
23.33
-0.14
-0.58

M
24.0
26.0
24.0
1.15
0.236
24.67
0.32
-0.12

MP
23.0
31.0
29.0
4.16
0.945
27.67
i.36
0.92

MT
26.0
26.0
26.0
0.00
0.000
26.00
0.78
0.35

MV
22.0
25.0
24.0
1.53
0.354
23.67
-0.02
-0.46

MX
25.0
22.0
24.0
1.53
0.354
23.67
-0.02
-0.46

N
24.0
25.0
24.0
0.58
0.118
24.33
0.21
-0.23

NH
23.0
23.0
24.0
0.58
0.118
23.33
-0.14
-0.58

NJ
21.0
24.0
25.0
2.08
0.473
23.33
-0.14
-0.58

NK
17.0
23.0
16.0
3.79
0.827
18.67
-1.76
-2.19

'NO;'
intf

Mof
w-"-. ^
15.18
SiSE
MSR
62^8®
MM

NP'
22.0
24.0
21.0
1.53
0.354
22.33
-0.49
-0.92

- a-K

96;0
2?ro-;
100
01236
96 00;;
MM
24;6
-------
fr- ¦ ~








	
34/37
ESD-LV Performance Evaluation: Gamma in Water,
6-Jun-1997


r
Barium-133







-
Lab
Res. 1


Exper.
Rng anal

Normalized deviation

Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
OT
24.0
19.0
28.0
4.51
1.120
23.67
-0.02
-0.46

P
23.0
25.0
24.0
1.00
0.236
24.00
0.09
-0.35

PB
20.0
21.0
20.0
0.58
0.118
20.33
-1.18
-1.62

PD








/ #
PE








,
PM
28.0
23.0
21.0
3.61
0.827
24.00
0.09
-0.35

PQ









PXJ








• *
PW
23.0
21.0
22.0
1.00
0.236
22.00
-0.60
-1.04

PX
25.0
26.0
26.0
0.58
0.118
25.67
0.67
0.23

Q
28.0
25.0
28.0
1.73
0.354
27.00
1.13
0.69

QM
32.0
47.0
35.0
7.94
2.470
38.00
4.94
"4750:
X ¥
QP
22.0
22.0
24.0
1.15
0.236
22.67
-0.37
-0.81

QT
26.0
24.0
23.0
1.53
0.354
24.33
0.21
-0.23

QU
23.0
24.0
25.0
1.00
0.236
24.00
0.09
-0.35

QW
22.0
23.0
21.0
1.00
0.236
22.00
-0.60
-1.04

QX
23.0
24.0
24.0
0.58
0.118
23.67
-0.02
-0.46

QZ
24.0
25.0
24.0
0.58
0.118
24.33
0.21
-0.23

R
22.0
24.0
25.0
1.53
0.354
23.67
-0.02
-0.46

RF









RH








k'-'l
RK








•
RO
20.0
22.0
23.0
1.53
0.354
21.67
-0.72
-1.15

KR









RU
23.0
24.0
31.0
4.36
0.945
26.00
0.78
0.35

KX
30.0
29.0
28.0
1.00
0.236
29.00
1.82
1.39

RZ









S
22.0
22.0
23.0
0.58
0.118
22.33
-0.49
-0.92

sc
20.0
22.0
24.0
2.00
0.473
22.00
-0.60
-1.04

SD
26.0
25.0
25.0
0.58
0.118
25.33
0.55
0.12

SF
49.0
61.0
50:0
LOO
0^236
60.00
910
8 66
x,'rV
SI
20.0
21.0
21.0
0.58
0.118
20.67
¦1.06
-1.50

SM
25.0
25.0
27.0
1.15
0.236
25.67
0.67
0.23

SN
19.0
21.0
20.0
1.00
0.236
20.00
-1.29
-1.73

SR
19.0
24.0
24.0
2.89
0.591
22.33
-0.49
-0.92

ss
24.0
24.0
26.0
1.15
0.236
24.67
0.32
-0.12

sv
25.0
23.0
24.0
1.00
0.236
24.00
0.09
-0.35

sx
24.0
22.0
26.0
2.00
0.473
24.00
0.09
-0.35

sz
23.0
23.0
24.0
0.58
0.118
23.33
-0.14
-0.58

T
26.0
25.0
23.0
1.53
0.354
24.67
0.32
-0.12

.'•TC-









TD
29.0
26.0
28.0
1.53
0.354
27.67
1.36
0.92

TO
24.0
23.0
25.0
1.00
0.236
24.00
0.09
-0.35

TQ
23.0
23.0
22.0
0.58
0.118
22.67
-0.37
-0.81

TR
16.0
16.0
19.0
1.73
0.354
17.00
-2.33
-2.77

• =
No data submitted

TAG SYMBOLS

IT s 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-Jun-1997
35/37
Barium-133
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
\
Normalized deviation
(grand-avg) (known) Tag
;TS>-









U *









UP
25.0
24.0
26.0
1.00
0.236
25.00
0.44
0.00

UR
390
37.0

1.00
0.236
38.00
4.94
4.50;

UV
23.0
22.0
24.0
1.00
0.236
23.00
-0.26
-0.69

UX
26.0
25.0
25.0
0.58
0.118
25.33
0.55
0.12

VA









VC
21.0
21.0
Zl.U
U.UO
0.000
21.00
-0.95
-1.39

VE
26.0
24.0
27.0
1.53
0.354
25.67
0.67
0.23

VH
24.0
25.0
23.0
1.00
0.236
24.00
0.09
-0.35

VI
21.0
27.0
25.0
3.06
0.709
24.33
0.21
-0.23

VM
25.0
25.0
25.0
0.00
0.000
25.00
0.44
0.00

VO
24.0
26.0
30.0
3.06
0.709
26.67
1.01
0.58

vs
19.0
21.0
21.0
1.15
0.236
20.33
-1.18
-1.62

w
25.0
29.0
24.0
2.65
0.591
26.00
0.78
0.35

WD
21.0
22.0
21.0
0,58
0.118
21.33
-0.83
-1.27

WI









WJ
28.0
27.0
28.0
0.58
0.118
27.67
1.36
0.92

'^WK)
1&0?
lilo
SI®
0.58
0.118
12.67



wo
27.0
27.0
28.0
0.58
0.118
27.33
1.25
0.81

WR
24.0
25.0
27.0
1.53
0.354
25.33
0.55
0.12

- wsi;
11.0
®qL

0:58
0.118
10.67
-4.53
-4.97

wv
22.0
25.0
23.0
1.53
0.354
23.33
-0.14
-0.58

WW
22.0
17.0
18.0
2.65
0.591
19.00
-1.64
-2.08

wx









X
15.0
26.0
25.0
6.08
1.570
22.00
-0.60
-1.04

XA
22.0
23.0
23.0
0.58
0.118
22.67
-0.37
-0.81

XB
22.0
24.0
20.0
2.00
0.473
22.00
-0.60
-1.04

XC
23.0
24.0
24.0
0.58
0.118
23.67
-0.02
-0.46

XD
24.0
23.0
25.0
1.00
0.236
24.00
0.09
-0.35

XF
22.0
22.0
22.0
0.00
0.000
22.00
-0.60
-1.04

XG
24.0
24.0
23.0
0.58
0.118
23.67
-0.02
-0.46

Y
24.0
24.0
23.0
0.58
0.118
23.67
-0.02
-0.46

Data sorted by Laboratory Average
Average
Tag
Lab
Average Tag
Lab
Average
Tag
Lab
10.67
X
WS
20.33
VS
21.33

EL
12.67
X
WK
20.33
PB
21.67

RO
15.00
X
LR
20.67
SI
21.67

AW
17.00

TR
21.00
VC
21.67

A
18.67

NK
21.00
JG
22.00

XF
18.67

CC
21.00
EX
22.00

XB
19.00

WW
21.00
AJ
22.00

X
19.67

BH
21.33
WD
22.00

SC
20.00

SN
21.33
GL
22.00

QW
• = No data submitted

TAG SYMBOLS

ft
= Above control limit
0 s Insufficient data

x = Determined to be an outlier

s Below control limit
-------
ESD-LV Performance Evaluation: Gamma in Water, 6-Jun-1997
Barium-133
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
22.00

PW
23.67

HK
25.00

UP
22.00

BK
23.67

DR
25.00

LF
22.00

AI
23.67

CX
25.00

JY
22.33

SR
23.67

BC
25.00

FL
22.33

S
23.67

AY
25.00

CE
22.33

NP
23.67

AE
25.00

BL
22.33

K
24.00

XD
25.00

BA
22.33

JS
24.00

VH
25.33

WR
22.33

I
24.00

TO
25.33

UX
22.33

DO
24.00

SX
25.33

SD
22.33

DH
24.00

SV
25.33

KH
22.33

CJ
24.00

QU
25.33

DE
22.33

AU
24.00

PM
25.67

VE
22.67

XA
24.00

P
25.67

SM
22.67

TQ
24.00

OA
25.67

PX
22.67

QP
24.00

JM
25.67

EW
22.67

OM
24.00

CO
25.67

AZ
23.00

UV
24.00

BM
26.00

W
23.00

EB
24.00

AF
26.00

RU
23.00

CS
24.33

VI
26.00

MT
23.00

BN
24.33

QZ
26.00

AK
23.00

AP
24.33

QT
26.33

HL
23.33

WV
24.33

N
26.33

GQ
23.33

SZ
24.33

-------
ESD-LV Performance Evaluation: Gamma in Water, 6- Jun-1997	37 / 37
Barium-133
% responding labs		Frequency distribution
20-
10-
-r		—i—	"T""T""T "T 	r~	1	r	"—i	r*
¦4	-2	0	+2	+4	+6
Normalized deviation of the mean from the known value
% responding labs	Frequency distribution
20-				-M-	
10-
-2	0	+2	+4
Normalized deviation of the mean from the grand average
-------
United States	Office of Research and	EPA/600/R-97/088
Environmental Protection	Development	August 1997
Agency	Washington, DC 20460
&EPA Uranium-Radium in
Water Performance
Evaluation Study
A Statistical Evaluation
of the June 13, 1997 Data
-------
Uranium-Radium in Water
Performance Evaluation Study
June 13, 1997
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; June 13, 1997.
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
- RECEIVED """'Ti
Enclosure

NFRI /flRD-LV LIBRARY
-------
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, 13-Jun-1997 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 sure 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, 13-Jun-1997
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-LY, 702/798-2141.
-------
r=
ESD-LV Performance Evaluation: Uranium-Radium in Water, 13-Jun-1997 3/20
Uranium (Natural)	Statistical Summary	145 Participants
The known value of this nuclide is 40.3 pCi/1 with an expected precision of 4.0; the control limits
are 33.4 to 47.2; the warning regions are 33.4 to 35.7 and 44.9 to 47.2
30(20.7 %) Failed to respond
, 81 <55.9 %) Within all limits



18(12.4 %) Out of control *

12(8.3 %) In warning zone
but not an outllar ^
I 1
i
but within control
Statistic
Respondents
Non-outliers
Mean
37.78
Grand Avg 38.73
Std. Dev.
7.36
5.32
Variance
54.10
28.30
% Coef. of Var.
19.47
13.73
% deviation of mean from known value
-6.25
-3.88
Norm. dev. of mean from known value
-0.34
-0.29
Median
39.00
39.17
% deviation of median from known value
-3.23
-2.81
Norm. dev. of median from known value
-0.18
-0.21
22(19.1 %) More than 3 norm. S.D.
12(10.4 %) Between 2 and 3 norm. S.D
.54(47.0 %) Wfthln 1 norm. S.D.
•	ol Known value
27(23.5 %) Between 1 and 2 norm. S.D.
-------









		
4/20 ESD-LV Performance Evaluation: Uranium-Radium in Water, 13-Jun-1997
v

Uranium (Natural)






\
Lab
Res. 1


Exper.
Rng anal

Normalized deviation

Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
A
36.1
37.9
39.0
1.46
0.428
37.67
-0.46
-1.14

AE
41.4
39.4
39.8
1.06
0.295
40.20
0.63
-0.04

AF
44.0
43.3
45.6
1.18
0.340
44.30
2.41
1.73

AH
38.4
38.5
38.7
0.15
0.044
38.53
-0.09
-0.76

AJ
46.3
45.5
46.0
0.40
0.118
45.93
3.12
2.44

AK
42.1
39.4
40.8
1.35
0.399
40.77
0.88
0.20

AL
43.5
43.5
44.2
0.40
0.103
43.73
2.16
1.49

AP









AR
37.2
37.1
37.9
0.44
0.118
37.40
-0.58
-1.26

AU








•
AW
39.5
41.0
40.3
0.75
0.222
40.27
0.66
-0.01

AZ
40.1
40.6
40.0
0.32
0.089
40.23
0.65
-0.03

BA
53.1
45.4
45.1
4.53
1.345
47.87
3.95
3.28
n
BC
39.2
38.9
39.4
0.25
0.074
39.17
0.19
-0.49

BG
41.0
39.9
40.4
0.55
0.162
40.43
0.74
0.06

BG
44.6
45.0
45.3
0.35
0.103
44.97
2.70
2.02

BG
39.5
36.5
38.1
1.50
0.443
38.03
-0.30
-0.98

BH
46.9
41.2
45.7
3.00
0.842
44.60
2.54
1.86

BK
41.1
42.5
40.4
1.07
0.310
41.33
1.13
0.45

BM
41.9
41.1
42.1
0.53
0.148
41.70
1.28
0.61

BN
33.3
32.5
32.8
0.40
0.118
32.87
-2.54
-3.22
11
BO
39.5
39.2
37.9
0.85
0.236
38.87
0.06
-0.62

C
40.4
40.7
40.4
0.17
0.044
40.50
0.76
0.09

CA
38.9
36.9
38.4
1.04
0.295
38.07
-0.29
-0.97

CC
8.0
7.9
8.1
0.10
0.030
8.00
-13.31
-13.99
X
CE
46.5
45.3
44.0
1.25
0.369
45.27
2.83
2.15

CG
38.1
36.0
36.5
1.10
0.310
36.87
-0.81
-1.49

CJ
34.0
34.0
34.0
0.00
0.000
34.00
-2.05
-2.73

cs
41.3
39.9
38.6
1.35
0.399
39.93
0.52
-0.16

cx
46.1
46.4
47.0
0.46
0.133
46.50
3.36
2.68

D
40.2
41.9
36.6
2.71
0.783
39.57
0.36
-0.32

DB
. 33.4
34.5
37.8
2.29
0.650
35.23
-1.52
-2.19

DE
37.4
37.6
39.8
1.33
0.354
38.27
-0.20
-0.88

DI
39.4
40.3
39.3
0.55
0.148
39.67
0.40
-0.27

DO
40.2
38.5
40.3
1.01
0.266
39.67
0.40
-0.27

DR








- • .
DT
38.2
38.9
38.2
0.40
0.103
38.43
-0.13
-0.81

DZ
36.5
33.7
30.9
2.80
0.827
33.70
-2.18
-2.86

E
40.2
39.1
41.0
0.95
0.281
40.10
0.59
-0.09

EB
39.9
40.4
41.8
0.98
0.281
40.70
0.85
0.17

EL
34.3
33.9
33.6
0.35
0.103
33.93
-2.08
-2.76

EO
3.0
3.0
3.0
0.00
0.000
3.00
-15.47
-16.15
X
EP









ER
38.5
38.0
38.8
0.40
0.118
38.43
-0.13
-0.81

FE
37.7
38.2
38.9
0.60
0.177
38.27
-0.20
-0.88

• 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: Uranium-Radium in Water, 13-Jun-1997 5/20
Uranium (Natural)






¦"i
Lab
Res. 1


Exper,
Rng anal

Normalized deviation

Res. 2
Res. 3
Sigma
(R + SR)
Average
(gTand-avg)
(known) Tag
FJ
14.3
16.6
15.0
1.18
0.340
15.30
-10.15
-10.83
X -
FN








' •
GN
24.8
26.0
25.4
0.60
0.177
25.40
-5.77
-6.45
a
GQ
37.0
37.3
38.4
0.74
0.207
37.57
-0.51
-1.18

HK
44.6
44.6
43.0
0.92
0.236
44.07
2.31
1.63

HL
28.1
35.6
36.7
4.68
1.514
33.47
-2.28
-2.96

HP
31.0
33.0
35.0
2.00
0.591
33.00
-2.48
-3.16

I
35.8
35.1
36.4
0.65
0.192
35.77
-1.29
-1.96

ID
»T ~
42.7
45.4
46.0
1.76
0.487
44.70
2:58
1.91

tr
,/¦
JE
37.6
37.9
37.6
0.17
0.044
37.70
-0.45
-1.13
" ^1
JG








r
JK
40.5
40.9
44.0
1.92
0.517
41.80
1.33
0.65

JN
41.3
41.6
42.8
0.79
0.222
41.90
1.37
0.69

JPr








- # ,r
JS
40.8
40.8
40.8
0.01
0.000
40.80
0.89
0.22

JX









JY
37.3
40.8
39.3
1.76
0.517
39.13
0.17
-0.51

K
47.9
48.8
47.9
0.52
0.133
48.20
4.10
3.42
tr
KH
38.6
37.9
38.2
0.35
0.103
38.23
-0.22
-0.89

KL








• vO
KT
42.0
45.0
47.0
2.52
0.738
44.67
2.57
1.89

L
37.7
41.1
41.7
2.16
0.591
40.17
0.62
-0.06

LF
37.7
37.9
40.1
1.33
0.354
38.57
-0.07
-0.75

LH








9^
VT








• V
LZ
40.5
39.3
40.0
0.60
0.177
39.93
0.52
-0.16

M
23.8
26.2
24.8
1.21
0.354
24.93
-5.98
-6.65
u
MX
28.6
26.2
23.4
2.60
0.768
26.07
-5.49
-6.16
u
N
40.0
40.0
37.5
1.44
0.369
39.17
0.19
-0.49

NA
39.0
40.0
41.0
1.00
0.295
40.00
0.55
-0.13

NH
35.6
39.3
38.8
2.01
0.546
37.90
-0.36
-1.04

NJ
39.0
44.0
45.0
3.21
0.886
42.67
1.70
102

•NK'









NO
36.9
38,9
40.3
1.71
0.502
38.70
-0.02
-0.69

NT
n ' ¦
23.3
24.4
25-5
1.10
0.325
24.40
-6.21
-6.88
u
V,
OB
39.7
39.7
39.3
0.23
0.059
39.57
0.36
-0.32

OF








'x&
OS
39.0
38.0
38.0
0.58
0.148
38.33
-0.17
-0.85

OX









p
41.1
39.1
44.9
2.95
0.856
41.70
1.28
0.61

PB
41.8
42.4
42.8
0.50
0.148
42.33
1.56
0.88

PG
27.7
24.7
22.7
2.52
0.738
25.03
-5,93
-6.61

PQ
39.8
39.1
40.4
0.65
0.192
39.77
0.45
-0.23

• =
No data submitted

TAG SYMBOLS

1t s Above control limit
1.0-
Insufficient data
X s
Determined to be an outlier
U> s Below control limit
-------
(t	








	:N
6/20 ESD-LV Performance Evaluation: Uranium-Radium in Water, 13-Jun-1997
N-

Uranium (Natural)







Lab
Res. 1


Exper.
Rng anal

Normalized deviation

Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
PW
28.4
27.0
35.0
4.27
1.345
30.13
-3.72
-4.40
U
PX
38.3
38.2
39.1
0.49
0.133
38.53
-0.09
-0.76

Q
41.8
42.8
39.9
1.47
0.428
41.50
1.20
0.52

QM








•
QQ
33.7
34.0
41.4
4.36
1.261
36.37
-1.03
-1.70

QU
37.2
34.5
31.8
2.70
0.797
34.50
-1.83
-2.51

QX
59.0
49.2
59.4
5.78
1.964
55.87
7.42
6.74
it
QZ
R
40.8
39.6
39.9
0.62
0.177
40.10
0.59
-0.09

XV
RD
19.2
18.8
19.1
0.21
0.059
19.03
-8.53
-9.21
•
X
RF








•
RG
39.0
39.5
40.0
0.50
0.148
39.50
0.33
-0.35

RK
35.5
35.0
36.4
0.71
0.207
35.63
-1.34
-2.02

RP
37.6
37.6
38.4
0.46
0.118
37.87
-0.38
-1.05

RR
39.9
39.1
40.8
0.85
0.251
39.93
0.52
-0.16

RX
24.0
23.0
25.0
1.00
0.295
24.00
-6.38
-7.06
ii
RZ
36.6
35.1
. 37.8
1.35
0.399
36.50
-0.97
-1.65

S
36.3
36.3
36.3
0.01
0.000
36.30
-1.05
-1.73

sc
41.9
41.8
41.3
0.32
0.089
41.67
1.27
0.59

SD
40.2
39.7
40.6
0.45
0.133
40.17
0.62
-0.06

SF
38.3
38.3
38.2
0.06
0.015
38.27
-0.20
-0.88

SI
43.8
43.9
44.6
0.44
0.118
44.10
2.32
1.65

SL
36.0
37.0
36.0
0.58
0.148
36.33
-1.04
-1.72

SM
36.8
38.4
29.2
4.92
1.683
34.80
-1.70
-2.38

SO
27.0
26.3
25.0
1.01
0.295
26.10
-5.47
-6.15

ss
40.0
39.7
39.3
0.35
0.103
39.67
0.40
-0.27

sx
38.4
36.9
38.4
0.87
0.222
37.90
-0.36
-1.04

sz
rr
36.7
38.0
36.0
1.01
0.295
36.90
-0.79
-1.47

JL
TD
39.4
38.7
39.5
0.44
0.118
39.20
0.20
-0.48

TN'








•
TQ
44.0
43.1
42.9
0.59
0.162
43.33
1.99
1.31

TS









U
36.8
37.7
37.9
0.59
0.162
37.47
-0.55
-1.23

UP
31.2
28.2
33.7
2.75
0.812
31.03
-3.33
-4.01

UQ








-
uz
52.8
45.4
48.7
3.71
1.177
48.97
4.43
3.75

VA







*
•' * y:
VH
40.6
44.6
40.7
2.28
0.591
41.97
1.40
0.72

VI
39.0
39.0
39.0
0.00
0.000
39.00
0.11
-0.56

W
41.1
42.0
41.8
0.47
0.133
41.63
1.26
0.58

WC








• . ,
WG
51.8
52.1
50.2
1.02
0.281
51.37
5.47
4.79
n
WH
38.6
38.1
35.8
1.49
0.413
37.50
-0.53
-1.21

WI
42.4
41.7
40.7
0.85
0.251
41.60
1.24
0.56

• =
No data submitted

TAG SYMBOLS

1T = Above control limit
(,—
Q
in
Insufficient data
x =
Determined to be an outlier
U = Below control limit
-------
>
ESD-LV Performance Evaluation: Uranium-Radium in Water, 13-Jun-1997 7/20
/			'
Uranium (Natural)








Lab Res. 1



Exper.
Rng anal

Normalized deviation

Res. 2
Res. 3 Sigma
CR + SR)
Average (grand-avg) (known) Tag
WJ
32.4

33.1
33.6 0.60
0.177
33.03 -2.47
-3.15
4
WO
41.3

42.6
41.2 0.78
0.207
41.70 1.28
0.61

WR
37.2

37.9
38.1 0.47
0.133
37.73 -0.43
-1.11

WX
33.1

32.2
31.8 0.6?
0.192
32.37 -2.76
-3.44
JJ.
X
37.6

37.8
36.9 0.47
0.133
37.43 -0.56
-1.24

XA









I f '
xc









Jl
XD









: -V
XI










Y ,


, .











Data sorted by Laboratory Averaj
re


Average

Tag

Lab
Average
Tag
Lab
Average
Tag
Lab
3.00

X

EO
37.40

AR
39.57

D
8.00

X

CC
37.43

X
39.67

ss
15.30

X

FJ
37.47

u
39.67

DO
19.03

X

RD
37.50

WH
39.67

DI
24.00

u

RX
37.57

GQ
39.77

PQ
24.40



NT
37.67

A
39.93

RR
24.93



M
37.70

JE
39.93

LZ
25.03

a

PG
37.73

WR
39.93

cs
25.40

u

GN
37.87

HP
40.00

NA
26.07

u

MX
37.90

NH
40.10

QZ
26.10

a

SO
37.90

SX
40.10

E
30.13

n

PW
38.03

BG
40.17

SD
31.03

u

UP
38.07

CA
40.17

L
32.37

u

WX
38.23

KH
40.20

AE
32.87

#

BN
38.27

SF
40.23

AZ
33.00



HP
38.27

FE
40.27

AW
33.03

4

WJ
38.27

DE
40.43

BG
33.47



HL
38.33

OS
40.50

C
33.70



DZ
38.43

ER
40.70

EB
33.93



EL
38.43

DT
40.77

AK
34.00



CJ
38.53

PX
40.80

JS
34.50



QU
38.53

AH
41.33

BK
34.80



SM
38.57

LF
41.50

Q
35.23



DB
38.70

NO
41.60

W1
35.63



RK
38.87

BO
41.63

W
35.77



I
39.00

VI
41.67

SC
36.30



S
39.13

JY
41.70

WO
36.33



SL
39.17

N
41.70

p
36.37



QQ
39.17

BC
41.70

BM
36.50



RZ
39.20

TD
41.80

JK
36.87



CG
39.50

RG
41.90

JN
36.90



SZ
39.57

OB
41.97

VH
• s No data Biibmitted

TAG SYMBOLS

ft = Above control limit
0 s Insufficient data
^				

x = Determined to be an outlier
¦It s Below control limit
-------
8/20 ESD-LV Performance Evaluation: Uranium-Radium in Water, 13-Jun-1997
Uranium (Natural)
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
42.33

PB
44.30

AF
45.93

AJ
42.67

NJ
44:60

BH
46.50

CX
43.33

TQ
44.67

KT
47.87
it
BA
43.73

AL
44.70

ID
48.20
it
K
44.07

HK
44.97

BG
48.97
ft
UZ
44.10

SI
45.27

CE
51.37
tt
WG






55.87
ft
QX
% responding labs
Frequency distribution
10«
U&BOI
-6
% responding labs
-4	-2	0	+2	+4
Normalized deviation of the mean from the known value
Frequency distribution
+6
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 ~ Below control limit
-------
ESD-LV Performance Evaluation: Uranium-Radium in Water, 13-Jun-1997 9/20
Radium-226	Statistical Summary	143 Participants
The known value of this nuclide is 3.0 pCi/1 with an expected precision of 0.5; the control limits
are 2.1 to 3.9; the warning regions are 2.1 to 2.4 and 3.6 to 3.9
42(29.4 %) Failed to respond •
. 72(50.3 %) Within all limits
9(6.3 %) Outliers _ ^


8(5.6 %) Out of control """ ^CT^jtiP'
,4 •••
•— 12(8.4 %) In warning zone
but not an outlier
^¦CLl I
>1
i \
i i-rCP>^
but within control
Statistic
Respondents
Non-outliers
Mean
3.75
Grand Avg 3.15
Std. Dev.
2.92
0.48
Variance
8.50
0.23
% Coef. of Var.
77.71
15.16
% deviation of mean from known value
25.07
5.04
Norm. dev. of mean from known value
0.26
0.32
Median
3.07
3.07
% deviation of median from known value
2.22
2.22
Norm. dev. of median from known value
0.02
0.14
20(19.8 %) More than 3 norm. S.D. *%
9(8.9 %) Between 2 and 3 norm. S.D.*
, 54(53.5 %) Within 1 norm. S.D.
of known value
18(17.8 %) Between 1 and 2 norm. S.D.
-------
r		—- 						—			
10/20 ESD-LV Performance Evaluation: Uranium-Radium in Water, 13-Jun-1997
	^
Radium-226








Lab
Res. 1


Exper.
Rng anal

Normalized deviation

Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
A
2.6
2.1
2.9
0.40
0.945
2.53
-2.14
-1.62

AE
3.0
3.0
3.1
0.06
0.118
3.03
-0.41
0.12

AF
3.1
3.0
3.1
0.06
0.118
3.07
-0.29
0.23

AH
2.2
2.6
2.4
0.20
0.473
2.40
-2.60
-2.08

AJ
4.1
3.4
4.2
0.44
0.945
3.90
2.59
3.12
It
AK
2.9
3.1
3.0
0.10
0.236
3.00
-0.52
0.00

AL
2.9
2.8
2.9
0.06
0.118
2.87
-0.99
-0.46

AP








' • \
AR








•
AU








.# - ' -
AW
3.1
3.2
3.2
0.06
0.118
3.17
0.05
0.58

AZ
4.4
4.3
4.2
0.10
0.236
4.30
3.98
4.50
ft
BA
3.5
2.7
3.0
0.40
0.945
3.07
-0.29
0.23

BC
2.4
2.2
2.3
0.10
0.236
2.30
-2.95
-2.42

BG








m
BH
3.0
3.1
2.7
0.21
0.473
2.93
-0.75
-0.23

BK
2.9
3.0
2.9
0.06
0.118
2.93
-0.75
-0.23

BM
3.4
3.6
3.4
0.12
0.236
3.47
1.09
1.62

BN
2.8
2.8
3.0
0.12
0.236
2.87
-0.99
-0.46

BO
2.9
3.1
2.9
0.12
0.236
2.97
-0.64
-0.12

C
2.6
2.7
2.8
0.10
0.236
2.70
-1.56
-1.04

CA
2.8
2.6
2.8
0.12
0.236
2.73
-1.45
-0.92

CC
20.0
23.2
24.1
2.15
8.321
22.43
66.80
67.32
X
CE
3.4
3.1
3.0
0.21
0.473
3.17
0.05
0.58

CG
2.0
2.4
2.7
0.35
0.827
2.37
-2.72
-2.19

CJ
3.2
3.1
4.0
0.49
1.120
3.43
0.98
1.50

cs
3.2
3.5
3.2
017
0.354
3.30
0.52
1.04

cx








•, \
D









DB
3.3
3.1
3.2
0.10
0.236
3.20
0.17
0.69

DE
3.5
3.6
3.6
0.06
0.118
3.57
1.44
1.96

DI









DO









DR
'








DT
3.2
2.9
3.1
0.15
0.354
3.07
-0.29
0.23

DZ
3.1
3.4
3.2
0.15
0.354
3.23
0.28
0.81

E
3.0
3.4
3.0
0.23
0.473
3.13
-0.06
0.46

EB
2.7
3.2
3.3
0.32
0.709
3.07
-0.29
0.23

EL
3.6
3.2
3.4
0.20
0.473
3.40
0.86
1.39

EO
3.0
3.0
3.0
0.00
0.000
3.00
-0.52
0.00

EP









ER
3.2
3.0
3.4
0.20
0.473
3.20
0.17
0.69

FE
2.3
2.1
2.1
0.12
0.236
2.17
-3.41
-2.89

FJ









FN
3.2
3.6
3.0
0.31
0.709
3.27
0.40
0.92

• =
No data submitted

TAG SYMBOLS

IT = Above control limit
[0-
Insufficient data
x =
Determined to be an outlier
II = Below control limit
-------
ESD-LV Performance Evaluation: Uranium-Radium in Water, 13-Jun-1997 11/20
/	¦	'	' ¦ -	¦	¦	¦ —	J
Radium-226
Lab Res. 1
Rea. 2
Res. 3
Exper,
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
GN
4.0
4.0
3.9
0.06
0.118
3.97
2.83
3.35
ft
GQ
2.9
2.9
3.2
0.17
0.354
3.00
-0.52
0.00

HK
3.1
3.0
3.1
0.06
0.118
3.07
-0.29
0.23

HL
3.3
3.2
3.0
0.15
0.354
3.17
0.05
0.58

HP
3.7
4.0
4.3
0.30
0.709
4.00
2.94
3.46
tr
I
2.8
3.8
2.9
0.55
1.345
3.17
0.05
0.58

ID
J
3.8
2.8
2.2
0.81
2.695
2.93
-0.75
-0.23

V
JE
5.6
6.2
3.0
1;70
6.296
4.93
6.17
6.70
aCs* *v~"
X
JG








a*
JK









JN









JP








V* -:•* •
JS
3.6
3.2
3.0
0.31
0.709
3.27
0.40
0.92

JX
3.1
3.4
3.2
0.15
0.354
3.23
0.28
0.81

JY
4.5
3.6
3.5
0.55
1.345
3.87
2.48
3.00

iS yj
12.8
11.7
liiS
0.78
2.470
11.93
>30.4^
30^95 :

KH
2.6
2.8
2.9
0.06
0.118
2.83
-1.10
-0.58

KL
4.0
4.3
3.3
0.51
1.345
3.87
2.48
3.00

KT









L
2.7
2.8
2.6
0.10
0.236
2.70
-1.56
-1.04

IF








v - v-5
• •-
LH








, ] V-
LT
3.5
3.5
3.5
0^00
0.000
3.50
1.21
1.73

LZ
3.2
3.2
3.1
0.06
0.118
3.17
0.05
0.58

M
3.3
3.1
3.4
0.15
0.354
3.27
0.40
0.92

MX
1.0
1.5
1.8
0.40
0.945
1.43
-5-95
-6.43

N
3.0
2.7
2.8
0.15
0.354
2.83
-1.10
-0.58

NA=









NH
2.7
2.9
3.1
0.20
0.473
2.90
-0.87
-0.35

NJ
4.4
4.9
4.7
0.25
0.591
4.67
5.25
5.77
JL
NK









NO
3.2
3.3
3.4
0.10
0.236
3.30
0.52
1.04

NT
3.3
3.1
2.9
0.20
0.473
3.10
-0.18
0.35

O
4.0
4.1
4.1
0.06
0.118
4.07
3.17
3.70
ft
OB
4.1
4.0
4.0
0.06
0.118
4.03
3.06
3.58
ft
OF
2.5
2.7
3.2
0.36
0.827
2.80
-1.22
-0.69

OS
2.4
2.6
2.8
0.20
0.473
2.60
-1.91
-1.39

•:OX-








¦yPZ:
P
4.0
3.2
3.4
0.42
0.945
3.53
1.32
1.85

PB
3.3
3.2
3.5
0.15
0.354
3.33
0.63
1.15

PG
2.7
2.8
2.8
0.06
0.118
2.77
-1.33
-0.61

>Q









i'EWS;
6.2
6&:
5.0
0.42
0.945
.5.33
7;56,
8.08

PX
3.2
3.2
3.2 ~
0.00
0.000
3*20
0.17
0.69

* s No data submitted TAG SYMBOLS	ft s Above control limit
„ 0 = Insufficient data	x = Determined to be an outlier	ii s Below control limit
-------
12 / 20 ESD-LV Performance Evaluation: Uranium-Radium in Water, 13-Jun-1997
			——		
Radium-226
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
\
Normalized deviation
(grand-avg) (known) Tag
Q
2.7
3.1
¦3.0
0.21
0.473
2.93
-0.75
-0.23

QM
2.8
2.2
2.7
0.32
0.709
2.57
-2.02
-1.50

QQ
3.6
3.8
3.7
0.10
0.236
3.70
1.90
2.42

QU
3.8
3.3
3.7
0.26
0.591
3.60
1.56
2.08

QX
19.0
23.1
22.0
2.12
8.321
21.37
63.10
63.62
x .
QZ
2.8
3.1
2.9
0.15
0.354
2.93
-0.75
-0.23

R
5.9
4^2
4.9
0.85
2.921
5.00
6.40
6.93"
X
RD
4.4
5.5
3.9
0.82
2.695
4.60
5.02
5.54
IT
RF








•
RG








• '
RK
2.2
3.0
3.4
0.61
1.795
2.87
-0.99
-0.46

RP








•
RR








•
RX
1L2
10.9
11.7
0.40
0.945
11.27
28.11
28.64
X
RZ
5.1
5.2
6.8
0.38
0.827
5.37
7.67
8.20
X
S
2.9
2.8
2.9
0.06
0.118
2.87
-0.99
-0.46

sc
2.6
2.9
3.0
0.21
0.473
2.83
-1.10
-0.58

SD
2.9
3.0
3.0
0.06
0.118
2.97
-0.64
-0.12

SF
2.7
3.0
3.0
0.17
0.354
2.90
-0.87
-0.35

SI
3.8
3.1
4.1
0.51
1.345
3.67
1.79
231

SL









SM
2.2
2.4
2.4
0.12
0.236
2.33
-2.83
-2.31

SO








' •
ss
2.8
3.2
2.6
0.31
0.709
2.87
-0.99
-0.46

sx
2.6
3.0
3.0
0.23
0.473
2.87
-0.99
-0.46

sz
T
4.4
3.5
3.7
0.47
1.120
3.87
2.48
3.00

JL
TD
3.7
2.8
2.7
0.55
1.345
3.07
-0.29
0.23

TN
2.9
2.5
2.6
0.21
0.473
2.67
-1.68
-1.15

TQ
2.9
2.8
2.9
0.06
0.118
2.87
-0.99
-0.46

TS








•
U
2.7
2.7
2.6
0.06
0.118
2.67
-1.68
-1.15

UP
3.7
3.5
3.2
0.25
0.591
3.47
1.09
1.62

UQ
3.0
2.8
2.9
0.10
0.236
2.90
-0.87
-0.35

uz








•#'v
VA









VH
3.8
3.7
3.9
0.10
0.236
3.80
2.25
2.77

VI
2.7
3.5
2.9
0.42
0.945
3.03
-0.41
0.12

W
2.8
.2.7
2.9
. 0.10
0.236
2.80
-1.22
-0.69

WC
3.2
3.8
3.5
0.30
0.709
3.50
1.21
1.73

WG
-







'•V '
WH
2.9
3.1
3.0
0.10
0.236
3.00
-0.52
0.00

WI








•; -
WJ
3.0
3.2
2.9
0.15
0.354
3.03
-0.41
0.12

WO
3.2
2.7
2.4
0.40
0.945
2.77
-1.33
-0.81

• =
Ui
No data submitted
Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
IT s Above control limit
s Below control limit
-------
ESD-LV Performance Evaluation: Uranium-Radium in Water, 13-Jun-1997 13 / 20
Radium-226
Lab. Res. 1 Res. 2
WR
WX
X	3.2	2.9
XA
XC
XD
XI
Y
Exper. Rng anal	Normalized deviation
Res. 3 Sigma (R + SR) Average (grand-avg) (known) Tag
3.0
0.15
0.354
3.03
-0.41
0.12
¦ •:
; # ,.
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
1.43
X
MX
2.93

ID
3.30

NO
2.17

FE
2.93

BK
3.30

CS
2.30

BC
2.93

BH
3.33

PB
2.33

SM
2.97

SD
3.40

EL
2.37

CG
2.97

BO
3.43

CJ
2.40

AH
3.00

WH
3.47

UP
2.53

A
3.00

GQ
3.47

BM
2.57

QM
3.00

EO
3.50

WC
2.60

OS
3.00

AK
3.50

LT
2.67

U
3.03

X
3.53

P
2.67

TN
3.03

WJ
3.57

DE
2.70

L
3.03

VI
3.60

QU
2.70

C
3.03

AE
3.67

SI
2.73

CA
3.07

TD
3.70

QQ
2.77

WO
3.07

HK
3.80

VH
2.77

PG
3.07

EB
3.87

SZ
2.80

W
3.07

DT
3.87

KL
2.80

OF
3.07

BA
3.87

JY
2.83

SC
3.07

AF
3.90
ft
AJ
2.83

N
3.10

NT
3.97
ft
GN
2.83

KH
3.13

E
4.00
ft
HP
2.87

TQ
3.17

LZ
4.03
ft
OB
2.87

SX
3.17

I
4.07
ft
O
2.87

ss
3.17

HL
4.30
ft
AZ
2.87

s
3.17

CE
4.60
ft
RD
2.87

RK
3.17

AW
4.67
• ft
NJ
2.87

BN
3.20

PX
4.93
X
JE
2.87

AL
3.20

ER
5.00
X
R
2.90

UQ
3.20

DB
5.33
X
PW
2.90

SF
3.23

JX
5.37
X
RZ
2.90

NH
3.23

DZ
11.27
X
RX
2.93

QZ
3.27

M
11.93
X
K
2.93

Q
3.27

JS
21.37
X
QX



3.27

FN
22.43
X
CC
• s No data submitted
0 = Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
IT s Above control limit
D- = Below control limit
-------
Radium-226
% 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
JO-f	J -i - - -i	-i u u — _¦ — — _¦	u ¦_ a	J u _	u	.i _ .j - l.	
-2	0	+2	+4
Normalized deviation of the mean from the grand average
-------
ESD-LV Performance Evaluation: Uranium-Radium in Water, 13-Jun-1997 15/20
Radium-228	Statistical Summary	143 Participants
The known value of this nuclide is 3.1 pCi/1 with an expected precision of 0.8; the control limits
are 1.7 to 4.5; the warning regions are 1.7 to 2.2 and 4.0 to 4.5
55(38.5 %) Failed to respond
67(46.9 %) Within all limits
6(4.2 %) Outliers
8(5.6 %) Out of control
but not an outlier
Statistic
Respondents
7(4.9 %) 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
3.76
Grand Avg 3.35
2.29
0.76
5.26
0.57
61.04
22.63
21.20
7.99
0.29
0.33
3.35
3.30
8.06
6.45
0.11
0.26
-------
16/20 ESD-LV Performance Evaluation: Uranium-Radium in Water, 13-Jun-1997
Radium-228
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
A
3.4
4.0
3.0
0.50
0.738
3.47
0.26
0.79

AE
2.7
2.9
3.0
0.15
0.222
2.87
-1.04
-0.51

AF
3.3
3.3
3.3
0.00
0.000
3.30
-0.10
0.43

AH
1.8
2.2
2.3
0.26
0.369
2.10
-2.70
-2.17

AJ
4.1
2.7
2.2
0.98
1.767
3.00
-0.75
-0.22

AK
3.3
3.8
3.6
0.25
0.369
3.57
0.47
1.01

AL
3.9
4.5
5.5
0.81
1.345
4.63
2.78
3.32
It
AP








» ""
AR








•
AU








•
AW
3.3
3.3
3.5
0.12
0.148
3.37
0.04
0.58

AZ
2.9
2.7
2.6
0.15
0.222
2.73
-1.33
-0.79

BA
3.7
2.2
3.1
0.75
1.205
3.00
-0.75
-0.22

BC
3.2
3.0
3.0
0.12
0.148
3.07
-0.61
-0.07

BG








• , -
BH
3.5
2.7
3.0
0.40
0.591
3.07
-0.61
-0.07

BK
3.1
2.9
3.1
0.12
0.148
3.03
-0.68
-0.14

BM
3.2
2.7
2.8
0.26
0.369
2.90
-0.97
-0.43

BN








• •
BO
3.0
3.5
2.7
0.40
0.591
3.07
-0.61
-0.07

C
2.7
2.8
3.0
0.15
0.222
2.83
-1.11
-0.58

CA
2.4
2.6
2.0
0.31
0.443
2.33
-2.20
-1.66

CC
6.4
7:3
8.0
0.80
1.345
7.23
8.41
8.95
X
CE
2.9
3.3
3.0
0.21
0.295
3.07
-0.61
-0.07

CG
2.5
0.9
1.4
0.82
1.345
1.60
-3.78
-3.25

CJ
3.3
3.7
3.3
0.23
0.295
3.43
0.19
0.72

CS
4.2
3.8
3.9
0.21
0.295
3.97
1.34
188

CX








•
D








/ • -
DB
2.6
2.3
2.5
0.15
0.222
2.47
-1.91
-1.37

DE
3.9
4.0
4.0
0.06
0.074
3.97
1.34
1.88

DI









DO









DR








• -V
DT
3.6
4.9
3.6
0.75
0.960
4.03
1.48
2.02

DZ
3.6
3.2
3.1
0.26
0.369
3.30
-0.10
0.43

E
3.3
3.6
3.0
0.30
0.443
3.30
-0.10
0.43

EB
2.7
3.5
4.5
0.90
1.627
3.57
0.47
1.01

EL
5.7
4.2
3.8
1.00
1.767
4.57
2.64
3.18
1T
EO
3.0
2.3
2.6
0.35
°:517
2.63
-1.55
-1.01

EP








f'
ER








• -
FE








•
FJ








• _ -
FN
2.4
2.6
2.3
0.15
0.222
2.43
-1.98
-1.44

• =
L0 =
No data submitted
Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
IT = Above control limit
JJ- = Below control limit
-------
ft








	^

ESD-LV Performance Evaluation: Uranium-Radium in Water, 13-Jun-1997 17/20
Radium-228








Lab



Exper.
Rag anal

Normalized deviation
'<
1
Res. 1 Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
GN-
7.0 *" '
7.0
7.6
0.35
0.443
7.20
8;34
8.88
X
GQ
2.7
4.0
5.3
1.30
2.752
4.00
1.41
1.95

HK
2.8
2.9
3.0
0.10
0.148
2.90
-0.97
-0.43

HL
3.3
4.4
3.6
0.57
0.812
3.77
0.91
1.44

HP
3.6
2.9
3.3
0.35
0.517
3.27
-0.18
0.36

I
4.1
4.0
3.4
0.38
0.517
3.83
1.05
1.59

ED
J
2.5
2.6
2.5
0.06
0.074
2.53
-1.76
-1.23

JE
4.8
5.3
3.8
0.76
1.205
4.63
2.78
3.32
F'
JG








«...
JK









JN









JP








pi.
'• "¦
JS
3.0
2.7
3.9
0.62
0.886
3.20
-0.32
0.22

JX









JY
3.3
4.0
3.4
0.38
0.517
3.57
0.47
1.01

K
3.5
4.0
4.3
0.40
0.591
3.93
1.27
1.80

KH
2.8
2.9
2.9
0.06
0.074
2.87
-1.04
-0.51

KL
63
*5j§
7.1
1.01
1.908
;6.17
6:10
6;64
¦x;-\
KT








' - >
' • ; "
L
3.2
3.1
3.1
0.06
0.074
3.13
-0.46
0.07

LF









LH








•!*':
LT
6.6
6.7
7.0
0.67
0.960
6.43
6.68
>7.22;,,
X.
XZ\








•'
M
4.0
3.1
3.0
0.55
0.738
3.37
0.04
0.58

MX
3.4
3.3
2.5
0.49
0.665
3.07
-0.61
-0.07

N
3.5
3.7
2.7
0.53
0.738
3.30
-0.10
0.43

NA









NH
3.9
4.1
3.5
0.31
0.443
3.83
1.05
1.59

NJ
3.6
3.9
4.0
0.21
0.295
3.83
1.05
1.59

NK









NO
3.6
3.8
4.0
0.20
0.295
3.80
0.98
1.52

NT
2.3
2.3
2.6
0.17
0.222
2.40
-2.05
-1.52

O
2.0
1.4
3.0
0.81
1.345
2.13
-2.63
-2.09

OB








. :=K.
OF
3.3
4.1
4.4
0.57
0.812
3.93
1.27
1.80

os-









OX









P
5.0
3.0
3.5
1.04
1.908
3.83
1.05
1.59

PB
3.6
3.7
3.6
0.06
0.074
3.63
0.62
1.15

>G'
;







• .*v ¦ .
PQ









PW
3.4
2.7
3.5
0.44
0.591
3.20
-0.32
0.22

":PXV








"V*
• =
No data submitted

TAG SYMBOLS

It = Above control limit
1 0 =
	
Insufficient data

X s
Determined to be an outlier
It = Below control limit
-------
18 / 20 ESD-LV Performance Evaluation: Uranium-Radium in Water, 13-Jun-1997
Radium-228
Lab
Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known)
Tag
Q
4.8
4.5
3.8
0.51
0.738
4.37
2.21
2.74

QM








•
QQ








•
QU
3.9
4.7
5.8
0.95
1.767
4.80
3.14
3.68
11
QX
5.4
5.2
5.4
0.12
0.148
5.33
4.30
4.84
IT
QZ
3.0
3.0
3.1
0.06
0.074
3.03
-0.68
-0.14

R








~
RD
4.7
3.1
2.1
1.31
2.752
3.30
-0.10
0.43

RF








•
RG








. •
RK
1.6
1.7
2.0
0.21
0.295
1.77
-3.42
-2.89

RP








•
RR








•
RX
4.0
4.3
4.8
0.40
0.591
4.37
2.21
2.74

RZ
4.9
4.8
4.6
0.15
0.222
4.77
3.07
3.61
It
S
3.5
3.5
3.3
0.12
0.148
3.43
0.19
0.72

sc
2.6
2.6
2.6
0.00
0.000
2.60
-1.62
-1.08

SD
3.1
3.3
3.5
0.20
0.295
3.30
-0.10
0.43

SF
4.1
3.1
3.1
0.58
0.738
3.43
0.19
0.72

SI
3.6
4.3
3.8
0.36
0.517
3.90
1.20
113

SL








•.
SM
3.6
41
3.7
0.26
0.369
3.80
0.98
1.52

SO








•
ss
2.9
3.6
3.6
0.40
0.517
3.37
0.04
0.58

sx
2.2
2.1
2.6
0.26
0.369
2.30
-2.27
-1.73

sz
2.3
2.4
2.5
0.10
0.148
2.40
-2.05
-1.52

T








¦ •
TD
4.9
4.2
2.7
1.12
2.189
3.93
1.27
1.80

TN
2.3
2.2
2.5
0.15
0.222
2.33
-2.20
-1.66

TQ
2.6
30
2.7
021
0.295
2.77
-1.26
-0.72

TS








•
U
2.7
2.6
2.5
0.10
0.148
2.60
-1.62
-1.08

UP
4.8
4.1
4.5
0.35
0.517
4.47
2.42
2.96

UQ
3.1
3.6
3.3
0.25
0.369
3.33
-0.03
051

uz









VA









VH
5.4
5.3
5.2
0.10
0.148
5.30
4.23
4.76
ft
VI
4.0
4.0
3.6
0.23
0.295
3.87
1.12
1.66

W








- < ¦ « o
WC
21.7
23.5
22;4
0.91
1.627
22.53
41.54
42.07
¦-X •
WG








% • ''
WH
2.6
2.3
2.0
0.30
0.443
2.30
-2.27
-1.73

WI









.WJ








l • .s
WO
3.2
3.2
2.9
0.17
0.222
3.10
-0.54
0.00

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

-------
ESD-LV Performance Evaluation: Uranium-Radium in Water, 13-Jun-1997 19/20
Radium-228
Lab
Res. 1
Exper. Rng anal	Normalized deviation
Res. 2 Res. 3 Sigma (R + SR) Average (grand-avg) (known) Tag
7.3
3.4
6.8
3.8
5.6
3.6
0.87
0.20
1.486
0.295
6.57:
3.60
6i97
0.55
7,51,
1.08
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
1.60

CG
3.07

BO
3.80

NO
1.77

RK
3.07

BH
3.83

P
2.10

AH
3.07

BC
3.83

NJ
2.13

O
3.10

WO
3.83

NH
2.30

WH
3.13

L
3.83

I
2.30

SX
3.20

PW
3.87

VI
2.33

TN
3.20

JS
3.90

SI
2.33

CA
3.27

HP
3.93

TD
2.40

NT
3.30

SD
3.93

OF
2.40

SZ
3.30

RD
3.93

K
2.43

FN
3.30

E
3.97

CS
2.47

DB
3.30

DZ
3.97

DE
2.53

ID
3.30

AF
4.00

GQ
2.60

SC
3.30

N
4.03

DT
2.60

U
3.33

UQ
4.37

RX
2.63

EO
3.37

ss
4.37

Q
2.73

AZ
3.37

M
4.47

UP
2.77

TQ
3.37

AW
4.57
ft
EL
2.83

C
3.43

SF
4.63
ft
JE
2.87

KH
3.43

S
4.63
ft
AL
2.87

AE
3.43

CJ
4.77
ft
RZ
2.90

HK
3.47

A
4.80
ft
QU
2.90

BM
3.57

JY
5.30
ft
VH
3.00

BA
3.57'

EB
5.33
ft
QX
3.00

AJ
3.57

AK
6.17
X
KL
3.03

QZ
3.60

X
6.43
X
LT
3.03

BK
3.63

PB
6.57
X
WR
3.07

MX
3.77

HL
7.20
X
GN
3.07

CE
3.80

SM
7.23
22.53
X
X
CC
WC
• s No data submitted TAG SYMBOLS ft S Above control limit
[ 0 = Insufficient data	x = Determined to be an outlier	 II s Below control limit J
-------
20 / 20 ESD-LV Performance Evaluation: Uranium-Radium in Water, 13-Jun-1997
Radium-228
% responding labs	Frequency distribution
10-f 	 		-1	J		
-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
-------
United States	0ffice of Research and	EPA/600/R-97/089
Environmental Protection	Development	August 1997
Agency	Washington, DC 20460
&EPA Gross Alpha-Beta in
Water Performance
Evaluation Study
A Statistical Evaluation
of the July 18, 1997 Data
-------
Gross Alpha-Beta in Water
Performance Evaluation Study
July 18, 1997
Environmental Protection Agency
National Exposure Research Laboratory
Environmental Sciences Division
Las Vegas, Nevada

RECEIVED
C
i. ¦ i -

NERL/CRD-LV LIBRARY
-------
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; July 18, 1997.
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, /I
t (t*.
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, 18-Jul-1997 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, 18-Jul-1997
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-L.V Performance Evaluation: Gross Alpha-Beta in Water, 18-Jul-1997 3/16
Gross Alpha	Statistical Summary	186 Participants
The known value of this nuclide is 3.1 pCi/1 with an expected precision of 5.0; the control limits
are 0.0 to 11.8; the warning regions are 0.0 to 0.0 and 8.9 to 11.8
33(17.7 %) Failed to respond
151 (81.2 %) Within all limits
# \\
0 NJ \
• X Pv
» \ rv
• N rv.
9 ^4/rNw
2(1.1 %) Outliers •*
^cnxri r
I

Statistic
Respondents
Non-outliers
Mean
4.28
Grand Avg 4.13
Std. Dev.
1.96
1.40
Variance
3.85
1.97
% Coef. of Var.
45.80
34.03
% deviation of mean from known value
38.20
33.20
Norm. dev. of mean from known value
0.60
0.73
Median
4.00
4.00
% deviation of median from known value
29.03
29.03
Norm. dev. of median from known value
0.46
0.64
2(1.3 %) More than 3 norm. S.D.
; 132(86.3 %) Within 1 norm. S.D.
of known value
19(12.4%) Between 1 and 2 norm. S.D.
-------
ft		







				x
4/16 ESD-LV Performance Evaluation: Gross Alpha-Beta in. Water, 18-Jul-1997
Gross Alpha






¦1
Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
A
3.9
3.5
3.6
0.21
0.047
3.67
-0.16
0.20
AE
4.9
4.1
4.8
0.44
0.095
4.60
0.16
0.52
AF
1.5
2.1
1.6
0.32
0.071
1.73
-0.83
-0.47
AH
3.2
3.4
3.1
0.15
0.035
3.23
-0.31
0.05
AJ
2.0
2.6
5.7
1.99
0.437
3.43
-0.24
0.12
AK
4.8
4.3
4.7
0.26
0.059
4.60
0.16
0.52
AL
4.5
4.6
4.5
0.06
0.012
4.53
0.14
0.50
AP
3.0
4.1
4.1
0.64
0.130
3.73
-0.14
0.22
AR
2.9
3.4
5.6
1.44
0.319
3.97
-0.06
0.30
AU
1.3
1.4
1.5
0.10
0.024
1.40
-0.95
-0.59
AW
4.0
5.0
6.2
1.10
0.260
5.07
0.32
0.68
AZ
4.5
3.8
4.1
0.35
0.083
4.13
0.00
0.36
BA
3.7
3.3
2.6
0.56
0.130
3.20
-0.32
0.03
BB
2.0
2.1
2.4
0.21
0.047
2.17
-0.68
-0.32
BC







•
BG







* - r
BH
4.4
3.8
4.0
0.31
0.071
4.07
-0.02
0.33
BK
3.7
3.6
2.8
0.49
0.106
3.37
-0.26
0.09
BL
6.9
7.4
7.2
0.25
0.059
7.17
1.05
1.41
BM
3.7
3.7
3.6
0.06
0.012
3.67
-0.16
0.20
BN
4.4
2.8
6.1
1.65
0.390
4.43
0.11
0.46
BO
4.4
4.3
4.9
0.32
0.071
4.53
0.14
0.50
BS
4.4
4.6
5.5
0.59
0.130
4.83
0.24
0.60
C
4.3
4.5
4.6
0.15
0.035
4.47
0.12
0.47
CA
2.8
3.2
3.3
0.26
0.059
3.10
-0.36
0.00
CC
4.2
5.3
4.7
0.55
0.130
4.73
0.21
0.57
CE
2.9
3.4
2.2
0.60
0.142
2.83
-0.45
-0.09
CG
3.6
2.9
2.5
0.56
0.130
3.00
-0.39
-0.03
CJ
3.2
2.9
2.7
0.25
0.059
2.93
-0.41
-0.06
CO
4.0
1.0
3.0
1.53
0.354
2.67
-0.51
-0.15
CP
1.7
2.5
1.6
0.49
0.106
1.93
-0.76
-0.40
cs
1.4
3.6
3.8
1.33
0.284
2.93
-0.41
-0.06
cx
3.4
3.3
3.4
0.06
0.012
3.37
-0.26
0.09
D
5.1
4.4
5.6
0.60
0.142
5.03
0.31
0.67
DB
3.5
3.9
4.4
0.45
0.106
3.93
-0.07
0.29
DD
5.4
4.4
6.5
1.05
0.248
5.43
0.45
0.81
DE
4.9
5.0
5.1
0.10
0.024
5.00
0.30
0.66
DH
3.7
3.6
3.4
0.15
0.035
3.57
-0.19
0.16
DO
3.8
4.1
3.5
0.30
0.071
3.80
-0.11
0.24
DR
0.7
1.0
0.7
0.17
0.035
0.80
-1.15
-0.80
DT
4.8
4.8
4.6
0.12
0.024
4.73
0.21
0.57
DZ
4.9
5.1
5.1
0.12
0.024
5.03
0.31
0.67
E
3.1
2.8
3.3
0.25
0.059
3.07
-0.37
-0.01
EB
3.6
6.2
4.5
1.32
0.307
4.77
0.22
0.58
EL
2.1
3.0
3.2
0.59
0.130
2.77
-0.47
-0.12
e =
No data submitted

TAG SYMBOLS

I! s Above control limit
hi
8
—-y
Insufficient data
X s
Determined to be an outlier
= Below control limit
-------
if	








	s\

ESD-LV Performance Evaluation: Gross Alpha-Beta in Water, 18-Jul-1997 5/16
Gross Alpha







>
Lab



Exper.
Rag anal

Normalized deviation

Kes. 1 Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
EO
3.0
4.0
4.0
0.58
0.118
3.67
-0.16
0.20

ER
3.4
3.7
3.1
0.30
0.071
3.40
-0.25
0.10

EV
4.7
2.4
1.8
1.53
0.343
2.97
-0.40
-0.05

EW








• - ^
EX
2.9
4.2
2.4
0.93
0.213
3.17
-0.33
0.02

FE
5.0
6.1
5.5
0.55
0.130
5.53
0.49
0.84

FF









FJ









FL
3.1
3.6
4.9
0.93
0.213
3.87
-0.09
0.27

FN
5.0
5.0
5.0
0.00
0.000
5.00
0.30
0.66

GQ
3.6
4.2
4.1
0.32
0.071
3.97
-0.06
0.30

GZ
3.3
2.6
3.9
0.65
0.154
3.27
-0.30
0.06

HI
2.6
2.0
2.5
0.32
0.071
2.37
-0.61
-0.25

HK
5.2
5.6
4.2
0.72
0.165
5.00
0.30
0.66

HL
3.1
4.5
3.1
0.81
0.165
3.57
-0.19
0.16

HP
5.3
3.8
4.4
0.75
0.177
4.50
0.13
0.48

I
2.6
3.0
3.0
0.23
0.047
2.87
-0.44
-0.08

ID
5.4
5.0
3.6
0.95
0.213
4.67
0.19
0.54

IU








• s "•
«J








v ^
JE








r>v
JG
4.7
4.3
3.5
0.61
0.142
4.17
0.01
0.37

JM
2.5
3.3
2.8
0.40
0.095
2.87
-0.44
-0.08

JN
2.9
2.8
3.8
0.55
0.118
3.17
-0.33
0.02

JP
3.8
3.0
2.9
0.49
0.106
3.23
-0.31
0.05

JQ
3.6
2.3
3.0
0.65
0.154
2.97
-0.40
-0.05

JS
6.0
5.3
6.9
0.80
0.189
6.07
0.67
1.03

JY
2.8
2.7
2.5
0.15
0.035
2.67
-0.51
-0.15

K
4.3
3.1
3.0
0.72
0.154
3.47
-0.23
0.13

KE
4.9
5.0
4.5
0.26
0.059
4.80
0.23
0.59

KH
3.9
4.2
5.0
0.57
0.130
4.37
0.08
0.44

KT
3.0
3.2
4.2
0.64
0.142
3.47
-0.23
0.13

KX
7.0
4.0
4.0
1.73
0.354
5.00
0.30
0.66

L
4.2
4.0
4.3
0.15
0.035
4.17
0.01
0.37

LE
6.5
6.5
6.9
0.23
0.047
6.63
0.87
1.22

LF
3.1
5.6
4.7
1.27
0.295
4.47
0.12
0.47

LL









LR
4.5
1.7
2.2
1.49
0.331
2.80
-0.46
-0.10

LT
3.1
2.0
2.6
0.55
0.130
2.57
-0.54
-0.18

M
1.1
2.5
2.0
0.71
0.165
1.87
-0.78
-0.43

MF
3.7
3.7
3.7
0.00
0.000
3.70
-0.15
0.21

MV
6.0
6.0
6.0
0.00
0.000
6.00
0.65
1.00

MX
1.0
1.6
14
0.31
0.071
1.33
-0.97
-0.61

N
5.4
4.2
4.8
0.60
0.142
4.80
0.23
0.59

NA
5.0
5.0
5.0
0.00
0.000
5.00
0.30
0.66

• =
No data submitted

TAG SYMBOLS

1? = Above control limit
0 £3
V			
Insufficient data

x s=
Determined to be an outlier
11 = Below control limit
				—sj
-------
f/









6/16 ESD-LV Performance Evaluation: Gross Alpha-Beta in Water, 18-Jul-1997

Gross Alpha








Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation

Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
NB
2.9
2.1
2.3
0.42
0.095
2.43
-0.59
-0.23

NH
10.0
7.0
5.0
2.52
0.591
7.33
1.11
1.47

NJ
3.5
3.1
3.7
0.31
0.071
3.43
-0.24
0.12

NK
2.6
3.6
3.7
0.61
0.130
3.30
-0.29
0.07

NO
5.4
6.3
7.0
0.80
0.189
6.23
0.73
1.09

NP
3.9
4.4
4.4
0.29
0.059
4.23
0.04
0.39

NT
4.4
3.9
5.2
0.66
0.154
4.50
0.13
0.48

0
4.0
3.2
2.5
0.75
0.177
3.23
-0.31
0.05

OA
2.7
3.5
3.8
0.57
0.130
3.33
-0.28
0.08

OB
4.1
4.0
2.5
0.90
0.189
3.53
-0.21
0.15

OF
7.9
6.3
7.8
0.90
0.189
7.33
1.11
1.47

OS
3.0
3.0
3.0
0.00
0.000
3.00
-0.39
-0.03

OT








•
OX








• V
OY








•
P
10.0
6.5
8.2
1.75
0.41.3
8.23
1.42
1.78

PA








•
PB
3.5
3.1
3.1
0.23
0.047
3.23
-0.31
0.05

Pt>








• -
PG
4.8
3.9
4.5
0.46
0.106
4.40
0.09
0.45

PM
5.6
4.0
4.0
0.92
0.189
4.53
0.14
0.50

PQ







. ./
•
PR
6.3
5.5
6.3
0.46
0.095
6.03
0.66
1.02

Q
5.9
6.3
6.8
0.45
0.106
6.33
0.76
1.12

QM
4.5
3.9
3.2
0.65
0.154
3.87
-0.09
0.27

QP
8.3
8.5
8.5
0.12
0.024
8.43
1.49
1.85

QQ
3.5
3.6
4.0
0.26
0.059
3.70
-0.15
0.21

QT
2.7
5.6
6.6
2.03
0.461
4.97
0.29
0.65 '

QU
6.1
4.4
5.1
0.85
0.201
5.20
0.37
0.73

QW
5.2
6.2
6.5
0.68
0.154
5.97
0.64
0.99

QX
5.1
5.2
5.1
0.06
0.012
5.13
0.35
0.70

QZ
3.3
3.6
3.7
0.21
0.047
3.53
-0.21
0.15

R
5.5
4.3
4.3
0.69
0.142
4.70
0.20
0.55

RB
6.2
4.9
7.4
1.25
0.295
6.17
0.71
1.06

RD








• k
RF








•
RG
13.8
13.7
13,2
0.32
0.071
13.57
3.27'
3.63 4:
X ?
RI
3.3
3.4
3.8
0.26
0.059
3.50
-0.22
0.14

RK









RR
4.1
4.1
4.1
0.00
0.000
4.10
-0.01
0.35

RZ
3.9
4.0
4.4
0.26
0.059
4.10
-0.01
0.35

S
6.1
6.6
6.1
0.29
0.059
6.27
0.74
1.10

sc
3.8
2.9
2.7
0.59
0.130
3.13
-0.34
0.01

SD
5.4
5.2
4.4
0.53
0.118
5.00
0.30
0.66

SF
3.9
3.0
3.6
0.46
0.106
3.50
-0.22
0.14

• ~
No data submitted

TAG SYMBOLS

ft = Above control limit
0 s
^	
Insufficient data
x =
Determined to be an outlier
= Below control limit
-------
tF-
ESD-LV Performance Evaluation: Gross Alpha-Beta in Water, 18-Jul-1997 7/16

Gross Alpha
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
¦ sav









si
3.5
3.4
3.9
0.26
0.059
3.60
-0.18
0.17

SL
4.8
6.4
7.7
1.45
0.343
6.30
0.75
1.11

SM
2.7
4.6
3.6
0.95
0.224
3.63
-0.17
0.18

SN
1.1
1.6
1.4
0.25
0.059
1.37
-0.96
-0.60

SO
3.0
3.2
3.1
0.10
0.024
3.10
-0.36
0.00

SR
6.8
5.8
8.7
1.47
0.343
7.10
1.03
1.39

ss
4.2
3.4
4.4
0.53
0.118
4.00
-0.04
0.31

su
2,2
1.4
1.8
0.40
0.095
1.80
-0.81
-0.45

sv
5.2
5.9
7.5
1.18
0.272
6.20
0.72
1.07

"sx;

17*'4v[
199
1.32
""0295?
18.40;

po

sz
3.2
3.1
3.2
0.06
0.012
3.17
-0.33
0.02

T
2.5
5.4
4.2
1.46
0.343
4.03
-0.03
0.32

TD
7.1
4.9
4.8
1.30
0.272
5.60
0.51
0.87

TH









TL;:;









TN
3.9
3.9
3.8
0.06
0.012
3.87
-0.09
0.27

TO








- '•
TQ
1.1
2.6
2.8
0.93
0.201
2.17
-0.68
-0.32

TW
2.4
4.7
3.9
1.17
0.272
3.67
-0.16
0.20

TX









TY
4.2
9.2
10.1
3.18
0.697
7.83
1.28
1.64

U
3.8
4.0
4.2
0.20
0.047
4.00
-0.04
0.31

UA
4.2
4.6
4.9
0.35
0.083
4.57
0.15
0.51

UP
2.8
2.5
3.0
0.25
0.059
2.77
-0.47
-0.12

UQ
4.5
3.9
4.0
0.32
0.071
4.13
0.00
0.36

VA
4.0
3.6
3.5
0.26
0.059
3.70
-0.15
0.21

VC








rh
VH
5.6
4.6
4.7
0.55
0.118
4.97
0.29
0.65

VI
4.5
3.3
4.1
0.61
0.142
3.97
-0.06
0.30

VJ
5.4
4.9
5.5
0.32
0.071
5.27
0.39
0.75

VO
6.8
6.7
4.7
1.18
0.248
6.07
0.67
1.03

IVT^r'








••
w
4.2
4.8
3.7
0.55
0.130
4.23
0.04
0.39

WE
4.4
4.4
4.2
0.12
0.024
4.33
0.07
0.43

WH
1.4
1.1
1.0
0.21
0.047
1.17
-1.03
-0.67

WJ
3.4
2.4
2.6
0.53
0.118
2.80
-0.46
-0.10

WN
5.4
5.5
6.5
0.61
0.130
5.80
0.58
0.94

WO









WP
5.1
4.1
3.6
0.76
0.177
4.27
0.05
0.40

WR
5.2
6.2
8.0
1.42
0.331
6.47
0.81
117

"WS ¦







£
&•>;
wu







V

WW
4.0
4.4
3.8
0.31
0.071
4.07
-0.02
0.33

iwxS









[0.
No data submitted
Insufficient data
X s
TAG SYMBOLS
Determined to be an outlier
IT s Above control limit
JJ. = Below control limit
-------
8/16 ESD-LV Performance Evaluation: Gross Alpha-Beta in Water, 18-Jul-1997
Gross Alpha
Lab Res. 1
Res. 2
Res. 3
X
XB
XC
XD
XF
XI
4.0	4.7
4.8	4.8
4.4
3.6
Exper. Rng anal	Normalized deviation
Sigma (R + SR) Average (grand-avg) (known) Tag
0.35
0.69
0.083
0.142
4.37
4.40
0.08
0.09
0.44
0.45

Data sorted by Laboratory Average
Average
Tag
Lab*
Average
Tag
Lab
Average
Tag
Lab
0.80

DR
3.20

BA
3.97

VI
1.17

WH
3.23

PB
3.97

GQ
1.33

MX
3.23

O
3.97

AR
1.37

SN
3.23

JP
4.00

U
1.40

AU
3.23

AH
4.00

SS
1.73

AF
3.27

GZ
4.03

T
1.80

SU
3.30

NK
4.07

WW
1.87

M
3.33

OA
4.07

BH
1.93

CP
3.37

CX
4.10

RZ
2.17

TQ
3.37

BK
4.10

RR
2.17

BB
3.40

ER
4.13

AZ
2.37

m
3.43

NJ
4.13

UQ
2.43

NB
3.43

AJ
4.17

L
2.57

LT
3.47

KT
4.17

JG
2.67

JY
3.47

K
4.23

W
2.67

CO
3.50

SF
4.23

NP
2.77

UP
3.50

RI
4.27

WP
2.77

EL
3.53

QZ
4.33

WE
2.80

WJ
3.53

OB
4.37

X
2.80

LR
3.57

HL
4.37

KH
2.83

CE
3.57

DH
4.40

XF
2.87

JM
3.60

SI
4.40

PG
2.87

I
3.63

SM
4.43

BN
2.93

CS
3.67

TW
4.47

LF
2.93

CJ
3.67

EO
4.47

C
2.97

JQ
3.67

BM
4.50

NT
2.97

EV
3.67

A
4.50

HP
3.00

OS
3.70

VA
4.53

PM
3.00

CG
3.70

QQ
4.53

BO
3.07

E
3.70

MF
4.53

AX,
3.10

SO
3.73

AP
4.57

UA
3.10

CA
3.80

DO
4.60

AK
3.13

SC
3.87

TN
4.60

AE
3.17

SZ
3.87

QM
4.67

ID
3.17

JN
3.87

FL
4.70

R
3.17

EX
3.93

DB
4.73

CC
• s No data submitted
0 = Insufficient data

TAG SYMBOLS
x = Determined to be an outlier
It
= Above control limit
= Below control limit

-------
ESD-LV Performance Evaluation: Gross Alpha-Beta in Water, 18-Jul-1997 9/16
Gross Alpha
Data sorted by Laboratory Average
Average Tag
Lab
Average
Tag Lab
Average
Tag
Lab
4.73
DT
5.07
AW
6.23

NO
4.77
EB
5.13
QX
6.27

S
4.80
N
5.20
QU
6.30

SL
4.80
KE
5.27
VJ
6.33

Q
4.83
BS
5.43
DD
6.47

WR
4.97
VH
5.53
FE
6.63

LE
4.97
QT
5.60
TD
7.10

SR
5.00
SD
5.80
WN
7.17

BL
5.00
NA
5.97
QW
7.33

OF
5.00
KX
6.00
MV
7.33

NH
5.00
HK
6.03
PR
7.83

TY
5.00
FN
6.07
VO
8.23

P
5.00
DE
6.07
JS
8.43

QP
5.03
DZ
6.17
KB
13.57
X
RG
5.03
D
6.20
sv
18.40
X
SX
% responding labs

Frequency distribution



20-
10-
T-
-4
-6
responding labs
-2	0	+2
Normalized deviation of the mean from the known value
Frequency distribution
—T-
+4
-4	-2	0+2+4
Normalized deviation of the mean from the grand average
T~
+6
0
= No data submitted
= Insufficient data
TAG SYMBOLS
x = Determined to be an outlier
IT = Above control limit
•11 = Below control limit
-------
ESD-LV Performance Evaluation: Gross Alpha-Beta in Water, 18-Jul-1997 10 / 16
Gross Beta	Statistical Summary	186 Participants
The known value of this nuclide is 15.1 pCi/1 with an expected precision of 5.0; the control limits
are 6.4 to 23.8; the warning regions are 6.4 to 9.3 and 20.9 to 23.8
31(16.7 %) Failed to respond
. 142(76.3 %) Within all limits


* x K
« \J \
9 W
• \ PS.
*	x Ts^
*	\l X
0 \l >v
"5
7(3.8 %) In warning zone
6(3.2 %) Outliers •'
^^Cri r
11 trr£^
but within control
Statistic
Respondents
Non-outliers
Mean
17.28
Grand Avg 15.42
Std. Dev.
17.64
2.38
Variance
311.24
5.67
% Coef. of Var.
102.10
15.44
% deviation of mean from known value
14.43
2.12
Norm. dev. of mean from known value
0.12
0.13
Median
15.43
15.40
% deviation of median from known value
2.21
1.99
Norm. dev. of median from known value
0.02
0.13
6(3.9 %) More than 3 norm. S.D.
; 118(76.1 %) Within 1 norm. S.D.
of known value
7(4.5 %) Between 2 and 3 norm. S.D.	I I I Q-J-^
-------
			 ^
11/16 ESD-LV Performance Evaluation: Gross Alpha-Beta in Water, 18-Jul-1997
Gross Beta







Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
A
14.6
14.4
13.8
0.42
0.095
14.27
-0.40
-0.29
AE
14.1
12.9
13.3
0.61
0.142
13.43
-0.69
-0.58
AF
14.0
13.4
13.3
0.38
0.083
13.57
-0.64
-0.53
AH
18.5
19.9
18.8
0.74
0.165
19.07
1.26
1.37
AJ
14.5
15.4
13.5
0.95
0.224
14.47
-0.33
-0.22
AK
15.2
15.3
14.9
0.21
0.047
15.13
-0.10
0.01
AL
14.0
14.3
13.8
0.25
0.059
14.03
-0.48
-0.37
AP
12.5
14.8
13.0
1.21
0.272
13.43
-0.69
-0.58
AR
17.0
13.2
19.3
3.08
0.721
16.50
0.37
0.48
AU
14.7
14.9
11.0
2.20
0.461
13.53
-0.65
-0.54
AW
17.3
17.7
18.6
0.67
0.154
17.87
0.85
0.96
AZ
15.4
16.2
15.9
0.40
0.095
15.83
0.14
0.25
BA
15.2
15.8
12.6
1.70
0.378
14.53
-0.31
-0.20
BB
15.8
15.0
16.0
0.53
0.118
15.60
0.06
0.17
BC







•
BG








BH
16.2
14.6
15.6
0.81
0.189
15.47
0.02
0.13
BK
16.2
16.0
15.8
0.20
0.047
16.00
0.20
0.31
BL
15.9
16.0
17.2
0.72
0.154
16.37
0.33
0.44
BM
16.3
16.9
16.1
0.42
0.095
16.43
0.35
0.46
BN
11.7
12.4
10.9
0.75
0.177
11.67
-1.30
-1.19
BO
14.9
15.7
12.9
1.44
0.331
14.50
-0.32
-0.21
BS
11.9
16.3
15.1
2.27
0.520
14.43
-0.34
-0.23
C
16.9
16.9
15.8
0.64
0.130
16.53
0.39
0.50
CA
13.8
13.8
14.2
0.23
0.047
13.93
-0.51
-0.40
CC
20.5
16.6
18.2
1.96
0.461
18.43
1.04
1.15
CE
16.0
14.3
14.8
0.87
0.201
15.03
-0.13
-0.02
CG
10.2
8.9
8.1
1.06
0.248
9.07
-2.20
-2.09
CJ
15.0
14.0
13.0
1.00
0.236
14.00
-0.49
-0.38
CO
15.0
15.0
15.0
0.00
0.000
15.00
-0.15
-0.03
CP
19.0
16.6
15.5
1.79
0.413
17.03
0.56
0.67
CS
13.5
18.1
14.0
2.52
0.543
15.20
-0.08
0.03
CX
15.1
14.4
12.9
1.12
0.260
14.13
-0.45.
-0.33
D
17.2
19.6
15.4
2.11
0.496
17.40
0.69
0.80
DB
12.5
13.8
14.6
1.06
0.248
13.63
-0.62
-0.51
DD
14.9
11.2
9.5
2.76
0.638
11.87
-1.23
-1.12
DE
16.4
16.5
16.6
0.10
0.024
16.50
0.37
0.48
DH
14.3
14.2
15.2
0.55
0.118
14.57
-0.30
-0.18
DO
14.0
16.0
15.0
1.00
0.236
15.00
-0.15
-0.03
DR
20.6
18.5
18.1
1.34
0.295
19.07
1.26
1.37
DT
13.4
14.0
13.7
0.30
0.071
13.70
-0.60
-0.48
DZ
14.0
15.0
13.4
0.81
0.189
14.13
-0.45
-0.33
E
15.1
15.2
13.5
0.95
0.201
14.60
-0.28
-0.17
EB
15.5
16.4
15.4
0.55
0.118
15.77
0.12
0.23
EL
14.6
16.1
15.0
0.78
0.177
15.23
-0.06
0.05
• =
No data submitted

TAG SYMBOLS

ft = Above control limit
l0H
Insufficient data
x =
Determined to be an outlier
JJ. s Below control limit
	1	
-------
ESD-LV Performance Evaluation: Gross Alpha-Beta in Water, 18-Jul-1997 12/16
Gross Beta
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known)
Tag
EO
18.0
17.0
17.0
0.58
0.118
17.33
0.66
0.77

ER








' >V'
EV
21.7
18.2
19.3
1.79
0.413
19.73
1.49
1.61

EW
17.9
15.9
16.4
1.04
0.236
16.73
0.46
0.57

EX
13.3
16.1
17.2
2.01
0.461
15.53
0.04
0.15

FE
12.8
13.0
13.2
0.20
0.047
13.00
-0.84
-0.73

FF"








:'W"
• , /<\
FJ








"fjk
FL
14.0
17.0
16.4
1.59
0.354
15.80
0.13
0.24

FN
17.0
17.0
17.0
0.00
0.000
17.00
0.55
0.66

GQ
11.2
12.1
14.2
1.54
0.354
12.50
-1.01
-0.90

GZ
10.7
12.1
13.0
1.16
0.272
11.93
-1.21
-1.10

HI
17.9
11.5
14.7
3.20
0.756
14.70
-0.25
-0.14

HK
18.6
16.3
17.4
1.15
0.272
17.43
0.70
0.81

HL
17.3
17.3
15.8
0.87
0.177
16.80
0.48
0.59

HP
9.6
8.6
6.2
1.75
0.402
8.13
-2.52
-2.41

I
18.1
16.2
14.5
1.80
0.425
16.27
0.29
0.40

ID
18.4
17.8
11.5
3.82
0.815
15.90
0.17
0.28

IU
.1,
14.0
15.0
16.0
1.00
0.236
15.00
-0.15
-0.03

KM >¦
JE
14.7
12.5
11.2
1.77
0.413
12.80
-0.91
-0.80

JG
13.9
15.4
14.2
0.79
0.177
14.50
-0.32
-0.21

JM
16.6
18.0
16.0
1.03
0.236
16.87
0.50
0.61

JN
12.5
13.2
12.8
0.35
0.083
12.83
-0.90
-0.79

JP
15.8
15.5
16.6
0.57
0.130
15.97
0.19
0.30

JQ
17.5
15.6
15.8
1.04
0.224
16.30
0.30
0.42

JS
22.3
20.2
18.2
2.05
0.484
20.23
1.67
1.78

JY
12.5
14.8
16.4
1.96
0.461
14.57
-0.30
-0.18

K
15.1
14.4
14.2
0.47
0.106
14.57
-0.30
-0.18

KE
15.0
15.1
15.2
0.10
0.024
15.10
-0.11
0.00

KH
14.0
15.4
14.8
0.70
0.165
14.73
-0.24
-0.13

KT
9.0
8.0
7.5
0.76
0.177
8.17
-2.51
-2.40

KX
18.0
16.0
17.0
1.00
0.236
17.00
0.55
0.66

L
14.7
15.7
15.7
0.58
0.118
15.37
-0.02
0.09

T.Tg
201.9
'222l>
26771
33.29
13.766
230.60
74.54
>74:65;

LF
17.0
15.0
13.0
2.00
0.473
15.00
-0.15
-0.03

LL








.v ,.v:'
LR
14.5
14.8
14.5
0.17
0.035
14.60
-0.28
-0.17

LT
20.9
13.6
24.4
5.51
1.525
19.63
1.46
1.57

M
16.0
17.0
14.0
1.53
0.354
15.67
0.09
0.20

MF
19.8
18.8
18.5
0.68
0.154
19.03
1.25
1.36

MV
13.0
13.0
13.0
0.00
0.000
13.00
-0.84
-0.73

MX
15.4
15.9
14.4
0.76
0.177
15.23
-0.06
0.05

N
12.1
12.3
12.2
0.10
0.024
12.20
-1.12
-1.00

NA
14.0
17.0
13.0
2.08
0.473
14.67
-0.26
-0.15

• ='
0 =
No data submitted
Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
ft = Above control limit
JJ = Below control limit
-------
C(	








	^
13/16 ESD-LV Performance Evaluation: Gross Alpha-Beta in Water, 18-Jul-1997
V

Gross Beta







¦>
Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation

Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
NB
23;7
28.4 .
23.0
2.94
0.638
25.03
3.33
3.44
X
NH
17.0
19.0
18.0
1.00
0.236
18.00
0.89
1.00

NJ
14.4
13.4
16.8
1.75
0.402
14.87
-0.19
-0.08

NK
13.6
14.0
17.7
2.26
0.484
15.10
-0.11
0.00

NO
16.3
19.4
23.6
3.66
0.862
19.77
1.51
1.62

NP
15.1
16.9
15.2
1.01
0.213
15.73
0.11
0.22

NT
17.1
16.1
15.1
1.00
0.236
16.10
0.24
0.35

O
17.2
16.9
17.2
0.17
0.035
17.10
0.58
0.69

OA
40.2
44.5
45.0
2.64
0.567
43.23
9.63
9.75
X
OB
16.5
17.5
20.8
2.25
0.508
18.27
0.99
1.10

OF
17.9
14.1
19.6
2.82
0.650
17.20
0.62
0.73

OS
15.0
15.0
14.0
0.58
0.118
14.67
-0.26
-0.15

OT
15.3
15.2
17.4
1.24
0.260
15.97
019
0.30

OX








- •
OY









P
20.0
24.8
27.6
3.84
0.898
24 13
3.02
3.13 ,
X
PA








•
PB
15.1
15.3
14.8
0.25
0.059
15.07
-0.12
-0.01

PD
17.5
16.8
19.1
1.18
0.272
17.80
0.82
0.94

PG
14.2
16.3
17.2
1.54
0.354
15.90
0.17
0.28

PM
17.2
17.1
16.6
0.32
0.071
16.97
0.54
0.65

PQ








•.
PR
13.1
13.5
14.3
0.61
0.142
13.63
-0.62
-0.51

Q
14.9
15.3
15.8
0.45
0.106
15.33
-0.03
0.08

QM
20.3
18.0
17.4
1.53
0.343
18.57
1.09
1.20

QP
15.5
16.5
15.3
0.64
0.142
15.77
0.12
0.23

QQ
15.0
18.1
14.7
1.88
0.402
15.93
0.18
0.29

QT
12.7
12.4
12.7
0.17
0.035
12.60
-0.98
-0.87

QU
12.4
15.3
17.0
2.33
0.543
14.90
-0.18
-0.07

QW
16.3
14.4
15.6
0.96
0.224
15.43
0.00
0.12

QX
17.4
16.8
17.1
0.30
0.071
17.10
0.58
0.69

QZ
14.0
13.3
13.7
0.35
0.083
13.67
-0.61
-0.50

R
17.3
16.8
17.4
0.32
0.071
17.17
0.61
0.72

RB
15.5
15.6
15.0
0.32
0.071
15.37
-0.02
0.09

RD








v .• ^
KF








'
RG
26.0
24!9
25.1
0.59
0.130
25.33
3.43
3.54 V

RI
14.9
18.0
16.1
1.56
0.366
16.33
0.32
0.43

RK








^ •' - •
RR
18.5
18.7
19.1
0.31
0.071
18.77
1.16
1.27

RZ
18.2
15.9
15.8
1.36
0.284
16.63
0.42
0.53

S
17.4
17.7
16.4
0.68
0.154
17.17
0.61
0.72

sc
15.0
15.6
17.9
1.53
0.343
16.17
0.26
0.37

SD
9.8
10.3
12.2
1.27
0.284
10.77
-1.61
-1.50

SF
18.0
11.2
16.0
3.49
0.803
15.07
-0.12
-0.01

• =
No data submitted

TAG SYMBOLS

tl = Above control limit
0 =
^	
Insufficient data
x =
Determined to be an outlier
Ji = Below control limit
-------
ESD-LV Performance Evaluation: Gross Alpha-Beta in Water, 18-Jul-1997 14 / 16
v		
Gross Beta








Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation

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









SI
lb.a
14.7
17.1
1.22
0.284
16.03
0.21
0.32

SL
14.7
14.5
15.8
0.70
0.154
15.00
-0.15
-0.03

SM
13.5
14.7
14.0
0.60
0.142
14.07
-0.47
-0.36

SN
15.0
14.0
15.0
0.58
0.118
14.67
-0.26
-0.15

SO
16.6
14.8
14.8
1.04
0.213
15.40
-0.01
0.10

SR
24.8
15.9
16.8
4.90
1.098
19.17
1.30
1.41

ss
16.8
14.0
14.5
1.49
0.331
15.10
-0.11
0.00

su
16.1
13.2
14.6
1.45
0.343
14.63
-0.27
-0.16

sv
15.1
17.8
14.4
1.80
0.402
15.77
0.12
0.23

8X
29.8
33 9
33.2
2.19
0.484
32.30
5.85
5.96
;x--^
sz
15.1
14.9
14.8
0.15
0.035
14.93
-0.17
-0.06

T
17.7
15.9
16.1
0.99
0.213
16.57
0.40
0.51

TD
23.2
22.2
22.4
0.53
0.118
22.60
2.49
2.60

,TH








•-^v — ,v
TL









TN
15.1
13.1
141
1.00
0.236
14.10
-0.46
-0.35

TO









TQ
12.2
10.6
12.8
1.14
0.260
11.87
-1.23
-1.12

TW
10.9
11.8
13.3
1.21
0.284
12.00
-1.18
-1.07

TX









TY
14.7
16.4
15.2
0.87
0.201
15.43
0.00
0.12

U
16.0
15.2
15.7
0.40
0.095
15.63
0.07
0.18

UA
10.6
10.2
11.0
0.40
0.095
10.60
-1.67
-1.56

UP
13.6
12.4
13.8
0.76
0.165
13.27
-0.75
-0.64

UQ
17.3
18.5
18.6
0.72
0.154
18.13
0.94
1.05

VA
13.2
12.5
11.4
0.91
0.213
12.37
-1.06
-0.95

VC









VH
18.5
17.6
18.1
0.45
0.106
18.07
0.92
1.03

VI
7.5
7.5
7.3
0.12
0.024
7.43
-2.77
-2.66

VJ
20.8
20.8
21.3
0.29
0.059
20.97
1.92
2.03

VO
20.8
20.5
23.6
1.71
0.366
21.63
2.15
2.26

VT*








4*' 'l'
W
15.6
14.5
16.1
0.82
0.189
15.40
-0.01
0.10

WE
16.9
. 16.3
17.3
0.50
0.118
16.83
0.49
0.60

WH
15.5
16.2
16.8
0.65
0.154
16.17
0.26
0.37

WJ
18.2
14.2
16.3
2.00
0.473
16.23
0.28
0.39

;-WN'









WO









WP








;fY
WR
16.1
14.8
20.0
2.71
0.614
16.97
0.54
0.65

WS








.NCb'
WU









WW
14.0
13.4
12.6
0.70
0.165
13.33
-0.72
-0.61

wx









• s No data submitted	TAG SYMBOLS	ft = Above control limit
I 0 = Insufficient data	x = Determined to be an outlier	11 = Below control limit
V* i i ¦¦ ¦	¦	i	i	i	i i i	—
-------
15 / 16 ESD-L.V Performance Evaluation: Gross Alpha-Beta in Water, 18-Jui-1997
Gross Beta
Exper. Rng anal	Normalized deviation
Lab Res. 1 Res. 2	Rea. 3 Sigma (R + SR) Average (grand-avg) (known) Tag
X
XB
XC
XD
XF
XI
e
17.7
17.1
18.3
15.1
18.3
17.0
0.35
1.13
0.071
0.236
18.10
0.93
16.40 0.34
1.04
0.45



Data sorted by Laboratory Average
Average
Tae
Lab
Average
Tag
Lab
Average
Tag
Lab
7.43

VI
14.27

A
15.37

L
8.13

HP
14.43

BS
15.37

RB
8.17

KT
14.47

AJ
15.40

W
9.07

CG
14.50

JG
15.40

SO
10.60

UA
14.50

BO
15.43

TY
10.77

SD
14.53

BA
15.43

QW
11.67

BN
14.57

K
15.47

BH
11.87

DD
14.57

JY
15.53

EX
11.87

TQ
14.57

DH
15.60

BB
11.93

GZ
14.60

LR
15.63

U
12.00

TW
14.60

E
15.67

M
12.20

N
14.63

SU
15.73

NP
12.37

VA
14.67

SN
15.77

SV
12.50

GQ
14.67

OS
15.77

QP
12.60

QT
14.67

NA
15.77

EB
12.80

JE
14.70

m
15.80

FL
12.83

JN
14.73

KH
15.83

AZ
13.00

MV
14.87

NJ
15.90

PG
13.00

FE
14.90

QU
15.90

ID
13.27

UP
14.93

sz
15.93

QQ
13.33

WW
15.00

SL
15.97

OT
13.43

AP
15.00

LF
15.97

JP
13.43

AE
15.00

IU
16.00

BK
13.53

AU
15.00

DO
16.03

SI
13.57

AF
15.00

CO
16.10

NT
13.63

PR
15.03

CE
16.17

WH
13.63

DB
15.07

SF
16.17

SC
13.67

QZ
15.07

PB
16.23

WJ
13.70

DT
15.10

SS
16.27

I
13.93

CA
15.10

KE
16.30

JQ
14.00

CJ
15.10

NK
16.33

RI
14.03

AL
15.13

AK
16.37

BL
14.07

SM
15.20

CS
16.40

XF
14.10

TN
15.23

MX
16.43

BM
14.13

DZ
15.23

EL
16.50

DE
14.13

CX
15.33

Q
16.50

AR
• a No data submitted
0 = Insufficient data

TAG SYMBOLS
x = Determined to be an outlier
rr
u
s Above control limit
s Below control limit
-------
ESD-LV Performance Evaluation: Gross Alpha-Beta in Water, 18-Jul-1997 16 / 16
Gross Beta
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag Lab
Average
Tag
. Lab
16.53

C
17.17
R
19.07

DR
16.57

T
17.20
OF
19.07

AH
16.63

RZ
17.33
EO
19.17

SR
16.73

EW
17.40
D
19.63

LT
16.80

HL
17.43
HK
19.73

EV
16.83

WE
17.80
PD
19.77

NO
16.87

JM
17.87
AW
20.23

JS
16.97

WR
18.00
NH
20.97

VJ
16.97

PM
18.07
VH
21.63

vo
17.00

KX
18.10
X
22.60

TD
17.00

FN
18.13
UQ
24.13
X
P
17.03

CP
18.27
OB
25.03
X
NB
17.10

Qx
18.43
CC
25.33
X
RG
17.10

o
18.57
QM
32.30
X
SX
17.17

s
18.77
RR
43.23
X
OA



19.03
MF
230.60
X
LE
% responding labs

Frequency distribution



10-

-i	1 ¦¦ T	-	*	-	-
-4	-2	G	+2
Normalized deviation of the mean from the known value
+4
+6
responding labs	 Frequency distribution
10-
—— —_
~-6 ' 3	-'2	6	+2	+4
Normalized deviation of the mean from the grand average
• s No data submitted	TAG SYMBOLS	ft = Above control limit
0 = Insufficient data	x = Determined to be an outlier	¦li = Below control limit
-------
United States	Office of Research and	EPA/600/R-97/129
Environmental Protection	Development	November 1997
Agency	Washington, DC 20460
Iodine in Water Performance
Evaluation Study
A Statistical Evaluation of
the September 19,1997 Data
-------
Iodine in Water
Performance Evaluation Study
September 19, 1997
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 19, 1997.
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.
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: Iodine in Water, 19-Sep-1997
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
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, 19-Sep-1997
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 rsinge 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, 19-Sep-1997
3/7
Iodine-131	Statistical Summary	105 Participants
The known value of this nuclide is 10.0 pCi/1 with an expected precision of 6.0; the control limits
are 0.0 to 20.4; the warning regions are 0.0 to 3.1 and 16.9 to 20.4
28(26.7 %) Failed to respond ,
, 75(71.4 %) Within all limits
Statistic
Respondents
2(1.9 %) 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
10.92
Grand Avg 10.92
1.75
1.75
3.05
3.05
16.00
16.00
9.18
9.18
0.53
0.53
10.67
10.67
6.67
6.67
0.38
0.38
-------
ESD-LV Performance Evaluation: Iodine in Water, 19-Sep-1897
Iodine-131
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
A
9.0
10.0
10.0
0.58
0.098
9.67
-0.36
-0.10

AF
10.0
12.0
10.0
1.15
0.197
10.67
-0.07
0.19

AJ
10.0
10.0
10.0
0.00
0.000
10.00
-0.26
0.00

AK
11.0
10.0
11.0
0.58
0.098
10.67
-0.07
0.19

AL
11.0
11.0
10.0
0.58
0.098
10.67
-0.07
0.19

AP
12.0
12.0
13.0
0.58
0.098
12.33
0.41
0.67

AU
9.0
11.0
8.0
1.53
0.295
9.33
-0.46
-0.19

AW
10.0
10.0
10.0
0.00
0.000
10.00
-0.26
0.00

AY








• .
AZ
10.0
11.0
10.0
0.58
0.098
10.33
-0.17
0.10

BA
12.0
11.0
10.0
1.00
0.197
11.00
0.02
0.29

BC








•
BH
11.0
8.0
10.0
1.53
0.295
9.67
-0.36
-0.10

BK
10.0
9.0
13.0
2.08
0.394
10.67
-0.07
0.19

BL
10.0
9.0
11.0
1.00
0.197
10.00
-0.26
0.00

BM
10.0
10.0
9.0
0.58
0.098
9.67
-0.36
-0.10

BO
14.0
10.0
11.0
2.08
0.394
11.67
0.22
0.48

C
10.0
10.0
11.0
0.58
0.098
10.33
-0.17
0.10

CA









CC








• »
CE
11.0
11.0
12.0
0.58
0.098
1L33
0.12
0.38

CJ
11.0
11.0
11.0
0.00
0.000
11.00
0.02
0.29

CP
16.0
17.0
20.0
2.08
0.394
17.67
1.95
2.21

cs








•
cx
8.0
8.0
11.0
1.73
0.295
9.00
-0.55
-0.29

D
10.0
10.0
10.0
0.00
0.000
10.00
-0.26
0.00

DD
10.0
15.0
9.0
3.21
0.591
11.33
0.12
0.38

DE
10.0
11.0
11.0
0.58
0.098
10.67
-0.07
0.19

DR
12.0
9.0
10.0
1.53
0.295
10.33
-0.17
0.10

DT
10.0
12.0
10.0
1.15
0.197
10.67
-0.07
0.19

DY
9.0
10.0
10.0
0.58
0.098
9.67
-0.36
-0.10

E
11.0
10.0
10.0
0.58
0.098
10.33
-0.17
0.10

EB
11.0
10.0
11.0
0.58
0.098
10.67
-0.07
0.19

EH
11.0
10.0
11.0
0.58
0.098
10.67
-0.07
0.19

EL
12.0
10.0
10.0
1.15
0.197
10.67
-0.07
0.19

EX
9.0
11.0
11.0
1.15
0.197
10.33
-0.17
0.10

FE
11.0
9.0
7.0
2.00
0.394
9.00
-0.55
-0.29

FL
13.0
11.0
12.0
1.00
0.197
12.00
0.31
0.58

GI
11.0
11.0
13.0
1.15
0.197
11.67
0.22
0.48

HK
10.0
10.0
10.0
0.00
0.000
10.00
-0.26
0.00

HP
18.0
18.0
18.0
0.00
0.000
18.00
2.04
2.31

HX








•
I
110
11.0
10.0
0.58
0.098
10.67
-0.07
0.19

IA








•
IU
10.0
10.0
11.0
0.58
0.098
10.33
-0.17
0.10

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

ESD-LV Performance Evaluation: Iodine in Water, 19-Sep-1997

	
5/7
Iodine-131







\
Lab
Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag









;• /
JS
10.0
9.0
8.0
1.00
0.197
9.00
-0.55
-0.29

JY
19.0
13.0
9.0
5.03
0.984
13.67
0.79
1.06

K
9.0
10.0
9.0
0.58
0.098
9.33
-0.46
-0.19

KL
10.0
9.0
11.0
1.00
0.197
10.00
-0.26
0.00

KM
10.0
10.0
9.0
0.58
0.098
9.67
-0.36
-0.10

KX
10.0
10.0
10.0
0.00
0.000
10.00
-0.26
0.00

L
11.0
8.0
11.0
1.73
0.295
10.00
-0.26
0.00

LF
10.0
8.0
9.0
1.00
0.197
9.00
-0.55
-0.29

LR
ssssr
12.0
8.0
9.0
2.08
0.394
9.67
-0.36
-0.10
. •
M
8.0
9.0
8.0
0.58
0.098
8.33
-0.75
-0.48

!mn








* • i
MP
11.0
10.0
10.0
0.58
0.098
10.33
-0.17
0.10

MV
10.0
11.0
12.0
1.00
0.197
11.00
0.02
0.29

N
10.0
9.0
13.0
2.08
0.394
10.67
-0.07
0.19

NH
11.0
10.0
10.0
0.58
0.098
10.33
-0.17
0.10

NJ
8.0
12.0
17.0
4.51
0.886
12.33
0.41
0.67

{NO;








•
O
11.0
11.0
11.0
0.00
0.000
11.00
0.02
0.29










' *0
OB
10.0
10.0
12.0
1.15
0.197
10.67
-0.07
0.19

OT
12.0
9.0
11.0
1.53
0.295
10.67
-0.07
019

"PB,









*;PE^








1
-• ' l
PW
12.0
10.0
9.0
1.53
0.295
10.33
-0.17
0.10

Q
9.0
8.0
8.0
0.58
0.098
8.33
-0.75
-0.48

QX
14.0
11.0
9.0
2.52
0.492
11.33
0.12
0.38

QY
11.0
15.0
15.0
2.31
0.394
13.67
0.79
1.06

QZ
8.0
11.0
12.0
2.08
0.394
10.33
-0.17
0.10

R
10.0
13.0
11.0
1.53
0.295
11.33
0.12
0.38

Bit:








•
S
10.0
10.0
10.0
0.00
0.000
10.00
-0.26
0.00

SD








*
SM
14.0
12.0
11.0
1.53
0.295
12.33
0.41
0.67

SS
11.0
16.0
13.0
2.52
0.492
13.33
0.70
0.96

sv
12.0
12.0
11.0
0.58
0.098
11.67
0.22
0.48

sz
9.0
13.0
15.0
3.06
0.591
12.33
0.41
0.67

:ta'









TC








•
TD
15.0
10.0
10.0
2.89
0.492
U.67
0.22
0.48

TH








•
TL









TQ
10.0
11.0
9.0
1.00
0.197
10.00
-0.26
0.00

• =
No data submitted

TAG SYMBOLS

It = Above control limit
l®.
Insufficient data
x =
Determined to be an outlier
= Below control limit
-------
6/7
ESD-LV Performance Evaluation: Iodine in Water, 19-Sep-1997
Iodine-131
Lab
Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known)
¦:V-r








tapc








w








UP
10.0
10.0
9.0
0.58
0.098
9.67
-0.36
-0.10
UY
12.0
14.0
10.0
2.00
0.394
12.00
0.31
0.58
VA
15.0
13.0
16.0
1.53
0.295
14.67
1.08
1.35
VC
11.0
15.0
12.0
2.08
0.394
12.67
0.50
0.77
VM
15.0
15.0
15.0
0.00
0.000
15.00
1.18
1.44
VN








W
8.0
9.0
8.0
0.58
0.098
8.33
-0.75
-0.48
WM








WO








X
17.0
9.0.
13.0
4.00
0.788
13.00
0.60
0.87
XK








Y
9.0
12.0
10.0
1.53
0.295
10.33
-0.17
0.10
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
8.33

W
10.00

AJ
11.00

MV
8.33

Q
10.33

Y
11.00

CJ
8.33

M
10.33

QZ
11.00

BA
9.00

LF
10.33

PW
11.33

R
9.00

JS
10.33

NH
11.33

QX
9.00

FE
10.33

MP
11.33

DD
9.00

CX
10.33

IU
11.33

CE
9.33

K
10.33

EX
11.67

TD
9.33

AU
10.33

E
11.67

SV
9.67

UP
10.33

DR
11.67

GI
9.67

LR
10.33

C
11.67

BO
9.67

KM
10.33

AZ
12.00

UY
9.67

DY
10.67

OT
12.00

FL
9.67

BM
10.67

OB
12.33

SZ
9.67

BH
10.67

N
12.33

SM
9.67

A
10.67

I
12.33

NJ
10.00

TQ
10.67

EL
12.33

AP
10.00

S
10.67

EH
12.67

VC
10.00

L
10.67

EB
13.00

X
10.00

KX
10.67

DT
13.33

ss
10.00

KL
10.67

DE
13.67

QY
10.00

HK
10.67

BK
13.67

JY
10.00

D
10.67

AL
14.67

VA
10.00

BL
10.67

AK
15.00

VM
10.00

AW
10.67
11.00

AF
O
17.67
18.00

CP
HP
• s No data submitted

TAG SYMBOLS

It
= Above control limit
0 = Insufficient data

x = Determined to be an outlier
u
= Below control limit
-------
ESD-LV Performance Evaluation: Iodine in Water, 19-Sep-1997
7/7
Iodine-131
% responding labs
Frequency distribution
30-
20-
10-
O-t—r-
-6
% responding labs
T
T
JUL
T
-r~
+4
-4	-2	6	+2
Normalized deviation of the mean from the known value
Frequency distribution
—r-
+6
20-
10-
0
-6
-2	0	+2	+4
Normalized deviation of the mean from the grand average
+6
-------
United States	Office of Research and	EPA/600/R-98/011A
Environmental Protection Development	January 1998
Agency	Washington, DC 20460
Blind-A Performance
Evaluation Study
A Statistical Evaluation
of the October 21, 1997 Data
006ECB98COV-01U
-------
Blind-A
Performance Evaluation Study
October 21, 1997
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 Bllnd-A; October 21, 1997.
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 Honsia 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-Oct-1997
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 hv 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-Oct-1997
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, 21-Oct-1997
3/30
Gross Alpha	Statistical Summary	182 Participants
The known value of this nuclide is 49.9 pCi/1 with an expected precision of 12.5; the control limits
are 28.2 to 71.6; the warning regions are 28.2 to 35.4 and 64.4 to 71.6
44(24.2 %) Failed to respond \
4(2.2 %) Outliers •
2(1.1 %) Out of control'
but not an outlier
Statistic
; 128(70.3 %) Within all limits
Respondents
- 4(2.2 %) 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
47.26
Grand Avg 47.27
9.36
7.59
87.58
57.54
19.80
16.05
-5.30
-5.28
-0.28
-0.35
46.87
46.87
-6.08
-6.08
-0.32
-0.40
-------

4/30

ESD-LV Performance Evaluation: Blind-A, 21-Oct-1997


Gross Alpha








Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation

Res. 3
Sigma
(R + SR)
Average
(grand-avg) (known) Tag
A
41.6
46.0
43.8
2.20
0.208
43.80
-0.48
-0.85

AE
49.2
50.8
51.2
1.06
0.095
50.40
0.43
0.07

AF
48.3
48.5
52.1
2.14
0.180
49.63
0.33
-0.04

AH
52.1
56.4
58.3
3.18
0.293
55.60
1.15
0.79

AJ
55.6
48.9
48.0
4.15
0.359
50.83
0.49
0.13

AK
52.7
51.1
53.6
1.27
0.118
52.47
0.72
0.36

AL
46.2
48.2
46.4
1.10
0.095
46.93
-0.05
-0.41











AR
57.4
56.4
49.1
4.53
0.392
54.30
0.97
0.61

AU
45.5
43.8
46.4
1.32
0.123
45.23
-0.28
-0.65

AW
47.8
49.3
49.9
1.08
0.099
49.00
0.24
-0.12

AZ
47.5
46.6
43.8
1.93
0.175
45.97
-0.18
-0.55

BA
':70jb
WM
76.4
o.ii
0.009
76 47
4;06
368

BB
35.9
37.9
35.6
1.25
0.109
36.47
-1.50
¦1.86

BC
52.1
52.1
54.1
1.15
0.095
52.77
0.76
0.40

BG








1*$-:
BH
38.4
42.4
37.9
2.47
0.213
39.57
-1.07
-1.43

BK
52.0
49.0
48.0
2.08
0.189
49.67
0.33
-0.03

BL:









BM
55.5
58.0
59.3
1.93
0.180
57.60
1.43
1.07

BN
58.8
64.9
69.2
5.23
0.491
64.30
2.36
2.00

BO
42.4
41.4
43.5
1.05
0.099
42.43
-0.67
-1.03

BS
51.8
50.5
52.6
1.06
0.099
51.63
0.60
0.24

BW








"''
C
50.0
50.4
46.0
2.43
0.208
48.80
0.21
-0.15

CA
54.5
65.1
65.7
6.30
0.529
61.77
2.01
1.64

CC









CE
48.6
38.4
47.8
5.67
0.482
44.93
-0.32
-0.69

CJ
45.0
47.0
45.0
1.15
0.095
45.67
-0.22
-0.59

GO









CP
45.4
42.9
39.9
2.75
0.260
42.73
-0.63
-0.99

CS
39.3
47.4
47.4
4.68
0.383
44.70
-0.36
-0.72

CX
40.1
43.7
50.5
5.28
0.491
44.77
-0.35
-0.71

D
49.3
48.0
48.4
0.67
0.061
48.57
0.18
-0.18

DB
50.0
50.1
50.5
0.26
0.024
50.20
0.41
0.04

DD
37.1
40.2
39.7
1.66
0.146
39.00
-1.15
-1.51

DE
53.8
53.9
54.0
0.10
0.009
53.90
0.92
0.55

DI








•Sv
DO









DT
48.0
47.5
46.8
0.60
0.057
47.43
0.02
-0.34

DZ
44.7
47.3
44.0
1.74
0.156
45.33
-0.27
-0.63

E
46.3
45.2
46.8
0.82
0.076
46.10
-0.16
-0.53

EB
47.0
43.0
47.0
2.31
0.189
45.67
-0.22
-0.59

EL '








-- •
EO
40.0
38.0
38.0
1.15
0.095
38.67
-1.19
-1.56

• s No data submitted

TAG SYMBOLS

IT = Above control limit
I 0 = Insufficient data	x = Determined to be an outlier	!)¦ = Below control limit
-------
((	

ESD-LV Performance Evaluation: Blind-A, 21-Oct-1997
			
5/30
Gross Alpha








Lab
Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
ER
56.7
52.0
54.1
2.35
0.222
54.27
0.97
0.61

EV
45.9
48.2
44.1
2.06
0.194
46.07
-0.17
-0.53

>/EX|









FE
70.0
71.0
72.0
1.00
0.095
71.00
3.29
2.92

fFF"








y *
FJ
39.1
42.7
41.2
1.81
0.170
41.00
-0.87
-1.23

FL
44.7
36.3
41.0
4.21
0.397
40.67
-0.91
-1.28

¦5fn!
•XGlf
16.0;



X7" **•«
f0.095

>4;56>
>4,93

GQ
56.9
52.6
54.6
2.15
0.203
54.70
1.03
0.67

GZ
44.0
43.5
44.7
0.60
0.057
44.07
-0.44
-0.81

HI
42.7
47.5
41.8
3.06
0.269
44.00
-0.45
-0.82

HK
61.1
59.1
65.2
3.11
0.288
61.80
2.01
1.65

HL
52.5
48.2
48.3
2.45
0.203
49.67
0.33
-0.03





















I
36.5
32.4
40.5
4.05
0.383
36.47
-1.50
-1.86

ID
47.8
42.7
39.0
4.42
0.416
43.17
-0.57
-0.93

fiur








- 1
JE
42.0
40.5
45.5
2.57
0.236
42.67
-0.64
-1.00

JG








"v
JM
54.1
45.1
45.9
4.98
0.425
48.37
0.15
-0.21

JN
59.8
58.8
59.7
0.55
0.047
59.43
1.69
1.32

JQ
54.3
48.6
48.9
3.21
0.269
50.60
0.46
0.10

JS
40.6
45.3
42.3
2.38
0.222
42.73
-0.63
-0.99

Tjx









JY
41.7
44.4
39.1
2.65
0.250
41.73
-0.77
-1.13

K
46.7
78:6
44.7
83.6
49.0
8i.3:
2.15
436
0.203
10.411
46.80
83.13
-0.06
I4S97~
-0.43
460
"X^
KT
32 0
35.0
39.0
3.51
0.331
35.33
-1.65
-2.02

KX
61.0
60.0
61.0
0.58
0.047
60.67
1.86
1.49

L
42.9
43.9
42.9
0.58
0.047
43.23
-0.56
-0.92

LE
42.2
45.3
43.9
1.55
0.146
43.80
-0.48
-0.85

LF
49.0
49.0
50.0
0.58
0.047
49.33
0.29
-0.08

LL
57.7
50.8
57.5
3.93
0.326
55.33
1.12
0.75

LR
47.2
50.4
45.2
2.62
0.246
47.60
0.05
-0.32

LT
38.2
41.7
43.5
2.70
0.250
41.13
-0.85
-1.21

M
13.5;
pis1
13.5
0.46
16.038:
"v
13;77
-4.64
5.01

MF
36.9
38.0
37.9
0.61
0.052
37.60
-1.34
-1.70

MP









MT








m'-.
MV
39.2
39.0
38.4
0.42
0.038
38.87
-1.16
-1.53

MY
48.1
48.6
47.4
0.60
0.057
48.03
0.11
-0.26

vn:;







* - ¦
^ >• < -
• =
No data submitted

TAG SYMBOLS

IT s Above control limit
1 0 =
Insufficient data
x =
Determined to be an outlier
1} = Below control limit
-------
6' 30	ESD-LV Performance Evaluation: Blind-A, 21-Oct-1997
Gross Alpha
Lab
Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
NA
60.0
57.0
64.0
3.51
0.331
60.33
1.81
1.45
NH
58.0
44.0
59.0
8.39
0.709
53.67
0.89
0.52
NJ
36.4
40.5
42.3
3.02
0.279
39.73
-1.04
-1.41
NK
49.9
47.0
48.7
1.46
0.137
48.53
0.18
-0.19
NO
48.5
49.0
53.1
2.52
0.217
50.20
0.41
0.04
O
54.3
51.8
55.6
1.93
0.180
53.90
0.92
0.55
OB
61.6
61.1
60.2
0.71
0.066
60.97
1.90
1.53
OF
47.3
53.4
54.3
3.81
0.331
51.67
0.61
0.24
OM







vV
OS
45.0
48.0
47.0
1.53
0.142
46.67
-0.08
-0.45
OX








OY
53.5
46.2
50.2
3.66
0.345
49.97
0.37
0.01
P
21.0
22.8
22.9
1.07
0.090
22.23
-3.47
-3.83 li
PA








PB
44.6
47.9
46.2
1.65
0.156
46.23
-0.14
-0.51
PD :








PG
54.7
59.4
63.0
4.16
0.392
59.03
1.63
1.27
PM
40.3
36.5
38.9
1.92
0.180
38.57
-1.21
-1.57
PQ








PW








Q
54.0
52.2
51.3
1.37
0.128
52.50
0.73
0.36
QM
30.6
33.3
40.0
4.84
0.444
34.63
-1.75
-2.12
QP
50.7
50.3
53.0
1.46
0.128
51.33
0.56
0.20
QQ
46.2
47.0
50.4
2.23
0.198
47.87
0.08
-0.28
QT
47.6
45.2
44.6
1.59
0.142
45.80
-0.20
-0.57
QU
37.6
38.6
38.0
0.50
0.047
38.07
-1.27
-1.64
QW
39.4
37.3
38.4
1.05
0.099
38.37
-1.23
-1.60
QX
58.2
58.7
58.4
0.25
0.024
58.43
1.55
1.18
QZ
51.8
54.6
49.6
2.51
0.236
52.00
0.66
0.29
RB
38.0
38.4
39.7
0.89
0.080
38.70
-1.19
-1.55
RD
41.3
29.9
36.6
5.73
0.539
35.93
-1.57
-1.94
;RF







• v
RG
59.0
56.0
55.0
2.08
0.189
56.67
1.30
0.94
RI
52.6
55.1
56.2
1.84
0170
54.63
1.02
0.66
RK








RP







>¦:
RR
42.0
41.0
42.0
0.58
0.047
41.67
-0.78
¦1.14
RU








RZ
37.4
36.0
38.0
1.03
0.095
37.13
-1.40
-1.77
S
47.9
53.0
51.7
2.65
0.241
50.87
0.50
0.13
sc
39.3
43.0
41.9
1.90
0.175
41.40
-0.81
-1.18
SD
64.6
54.2
62.7
5.54
0.491
60.50
1.83
1.47
SF
45.0
56.0
58.0
7.00
0.614
53.00
0.79
0.43
SG
35.9
41.0
38.5
2.55
0.241
38.47
-1.22
-1.58
SI
39.3
38.7
. 38.2
0.55
0.052
38.73
-1.18
-1.55
• s No data submitted TAG SYMBOLS IT = Above control limit
0 s Insufficient data	x = Determined to be an outlier	11 = Below control limit
-------
-*
ESD-LV Performance Evaluation: Blind-A, 21-Oct-1997	7/30
Gross Alpha
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tatr
iS&U









SM
47.9
47.8
54.7
3.96
0.326
50.13
0.40
0.03

SN
42.5
41.0
42.0
0.76
0.071
41.83
-0.75
-1.12

SO
43.8
46.7
42.4
2.19
0.203
44.30
-0.41
-0.78

SR
47.8
47.9
49.6
1.01
0.085
48.43
0.16
-0.20

ss
49.3
51.5
54.5
2.61
0.246
51.77
0.62
0.26

sx
49.7
47.7
46.7
1.53
0.142
48.03
0.11
-0.26

sz
38.9
47.6
45.8
4.59
0.411
44.10
-0.44
-0.80

T
42.9
33.6
38.1
4.65
0.439
38.20
-1.26
-1.62

TD
35.7
39.6
46.9
5.69
0.529
40.73
-0.91
-1.27

:rTLl"








''
TN
50.4
45.4
41.5
4.46
0.421
45.77
-0.21
-0.57

TQ
42.6
48.6
49.8
3.86
0.340
47.00
-0.04
-0.40

^TS/









TY
42.2
36.7
43.0
3.43
0.298
40.63
-0.92
-1.28

U
47.9
45.1
44.9
1.68
0.142
45.97
-0.18
-0.55

UA
46.9
47.0
46.5
0.26
0.024
46.80
-0.06
-0.43


VH








\M.
VI
44.9
42.3
51.7
4.85
0.444
46.30
-0.13
-0.50

VJ
40.8
49.7
46.7
4.53
0.421
45.73
-0.21
-0.58

VM.








^.
vo
50,9
48.3
46.5
2.21
0.208
48.57
0.18
-0.18

VT
64.4
53.9
59.7
5.26
0.496
59.33
1.67
1.31

W
55.0
56.0
47.0
4.93
0.425
52.67
0.75
0.38

WE
38.7
37.0
38.6
0.95
0.080
38.10
-1.27
-1.64

WH
44.7
46.7
50.6
3.00
0.279
47.33
0.01
-0.36

WO
48.0
56.5
41.5
7.52
0.709
48.67
0.19
-0.17

WR
50.8
53.4
54.7
1.99
0.184
52.97
0.79
0.42

WW
51.5
49.4
54.1
2.35
0.222
51.67
0.61
0.24

X
47.2
44.1
46.6
1.64
0.146
45.97
-0.18
-0.55

XA









XC









XD









XF
64.5
66.5
59.0
3.88
0.354
63.33
2.23
186

XI








•#./
XJ
41.4
45.1
37.9
3.60
0.340
41.47
-0.80
-1.17

XK
38.4
38.0
42.6
2.55
0.217
39.67
-1.05
-1.42

XL
44.5
41.6
43.6
1.48
0.137
43.23
-0.56
-0.92

XM
49.3
49.1
43.2
3.47
0.288
47.20
-0.01
-0.37

• =
0 =
No data submitted
Insufficient data
X s
TAG SYMBOLS
Determined to be an outlier
It s Above control limit
U- = Below control limit
\5:
-------
8/30
ESD-LV Performance Evaluation: Blind-A, 21-Oct-1997
Gross Alpha
Lab Res. 1
Exper. Rng anal	Normalized deviation
^es- 2	Res. 3 Sigma (R + SR) Average (grand-avg) (known) Tag
XN
xo
34.4
33.4
37.2
1.97
0.180
35.00
-1.70

-2.06
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
13.77
X
M
43.17

ID
48.53

NK
14.33
X
FN
43.23

XL
48.57

VO
22.23
u
P
43.23

L
48.57

D
28.20

UP
43.80

A
48.67

WO
34.63

QM
43.80

LE
48.80

C
35.00

XN
44.00

HI
49.00

AW
35.33

KT
44.07

GZ
49.33

LF
35.93

RD
44.10

SZ
49.63

AF
36.47

I
44.30

SO
49.67

HL
36.47

BB
44.70

CS
49.67

BK
37.13

RZ
44.77

cx
49.97

OY
37.60 .

MF
44.93

CE
50.13

SM
38.07

QU
45.23

AU
50.20

NO
38.10

WE
45.33

DZ
50.20

DB
38.20

T
45.67

EB
50.40

AE
38.37

QW
45.67

CJ
50.60

JQ
38.47

SG
45.73

VJ
50.83

AJ
38.57

PM
45.77

TN
50.87

S
38.67

EO
45.80

QT
50.90

UQ
38.70

RB
45.97

X
51.33

QP
38.73

SI
45.97

AZ
51.63

BS
38.87

MV
45.97

U
51.67

WW
39.00

DD
46.07

EV
51.67

OF
39.57

BH
46.10

E
51.77

ss
39.67

XK
46.23

PB
52.00

Qz
39.73

NJ
46.30

VI
52.47

AK
40.63

TY
46.67

OS
52.50

Q
40.67

FL
46.80

UA
52.67

w
40.73

TD
46.80

K
52.77

BC
41.00

FJ
46.93

AL
52.97

WR
41.13

LT
47.00

TQ
53.00

SF
41.40

SC
47.20

XM
53.67

NH
41.47

XJ
47.33

WH
53.90

O
41.67

RR
47.43

DT
53.90

DE
41.73

JY
47.60

LR
54.27

ER
41.83

SN
47.87

QQ
54.30

AR
42.43

BO
48.03

SX
54.63

RI
42.67

JE
48.03

MY
54.70

GQ
42.73

JS
48.37

JM
55.33

LL
42.73

CP
48.43

SR
55.60

AH
• = No data submitted
0 = Insufficient data
TAG SYMBOLS
x = Determined to be an outlier
II = Above control limit
II = Below control limit
-------
ESD-LV Performance Evaluation: Blind-A, 21-Oct-1997
9/30
Gross Alpha
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
56.67

RG
59.43

JN
61.80

HK
57.60

BM
60.33

NA
63.33

XF
58.43

QX
60.50

SD
64.30

BN
58.47

VA
60.67

KX
71.00

FE
59.03

PG
60.97

OB
76.47
X
BA
59.33

VT
61.77

CA
83.13
X
KE
% responding labs
Frequency distribution
10-
-T-
-6
-mMuIhu

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

-4
+4
+6
Normalized deviation of the mean from the grand average
0
s- No data submitted
= Insufficient data
TAG SYMBOLS
x = Determined to be an outlier
It = Above control limit
U = Below control limit
-------
ESD-LV Performance Evaluation: Blind-A, 21-Oct-1997
10/30
Radium-226	Statistical Summary	182 Participants
The known value of this nuclide is 5.0 pCi/1 with an expected precision of 0.8; the control limits
are 3.6 to 6.4; the warning regions are 3.6 to 4.1 and 5.9 to 6.4
89(48.9 %) Failed to respond
9(4.9 %) Outliers	-
5(2.7 %) Out of control		
but not an outlier
. 71(39.0 %) Within all limits
8(4.4 %) In warning zone
but within control
Statistic
Respondents
Non-outliers
Mean
7.15
Grand Avg 5.05
Std. Dev.
15.88
0.70
Variance
252.24
0.49
% Coef. of Var.
221.98
13.90
% deviation of mean from known value
43.10
1.08
Norm. dev. of mean from known value
0.14
0.08
Median
5.00
4.98
% deviation of median from known value
0.00
-0.33
Norm. dev. of median from known value
0.00
-0.02
14(15.1 %) More than 3 norm. S.D
8(8.6 %) Between 2 and 3 norm
,47(50.5 %) Within 1 norm. S.D.
\	of known value
Between 1 and 2 norm. S.D.
-------
(t			
11/30
ESD-LV Performance Evaluation: Blind-A, 21-Oct-1997

	 v
• < .•
AR









AU
2.4
24v
2.2
0.12
0.148
2.33
'5.89
.-5.77 -\

AW
4.6
4.7
5.0
0.21
0.295
4.77
¦0.62
-0.51

AZ
6.5
5.7
5.5
0.53
0.738
5.90
1.83
1.95

BA
4.6
5.4
4.5
0.49
0.665
4.83
-0.48
-0.36

BB
4.8
5.4
5.1
0.30
0.443
5.10
0.10
0.22

BC
49
4.9
5.1
0.12
0.148
4.97
-0.19
-0.07

BO









BH
5.3
4.3
4.2
0.61
0.812
4.60
-0.98
-0.87

BK
4.8
4.9
4.8
006
0.074
4.83
-0.48
-0.36

BL









BM
5.1
5.0
5.2
0.10
0.148
5.10
0.10
0.22

BN
3.5
4.1
4.1
0.35
0.443
3.90
-2.50
-2.38

BO
4.7
4.9
5.0
0.15
0.222
4.87
-0.41
-0.29

BS








•
BW








• •
C
5.6
5.1
5.5
0.26
0.369
5.40
0.75
0.87

CA
4.5
4.3
4.6
0.15
0.222
4.47
-1.27
-1.15

CC








• • ^
CE
5.1
4.3
5.0
0.44
0.591
4.80
-0.55
-0.43

CJ
6.0
5.9
5.8
0.10
0.148
5.90
1.83
1.95

CO









CP








•
CS








'• -
CX








'
D








• -
DB
5.2
5.3
4.9
0.21
0.295
5.13
0.17
0.29

DD









DE
5.4
5.6
5.8
0.20
0.295
5.60
1.18
1.30

DI








•
DO









DT
4.6
4.0
4.7
0.38
0.517
4.43
-1.34
-1.23

DZ
4.8
5.9
5.4
0.55
0.812
5.37
0.68
0.79

E
4.9
4.8
5.3
0.26
0.369
5.00
-0.12
0.00

EB
4.0
4.0
4.1
0.06
0.074
4.03
-2.21
-2.09

EL
5.3
5.8
5.3
0.29
0.369
5.47
0.89
1.01

EO
4.8
5.0
5.7
0.47
0.665
5.17
0.24
0.36

• =
No data submitted

TAG SYMBOLS

11 = Above control limit

Insufficient data
x =
Determined to be an outlier
= Below control limit
-------
—	 ^
ESD-LV Performance Evaluation: Blind-A, 21-Oct-1997	12 / 30
r
Radium-226
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
N
Normalized deviation
(grand-avg) (known) Tag
JUK
4.9
5.0
5.0
0.06
0.074
4.97
-0.19
-0.07

':EV?
454$
057
1555
1.23
2470

326;45 ~
326 56
^vv-v'v';
EX'.-.








V\ «
FE
b.U
6.0
5.6
0.23
0.295
5.87
1.76
1.88

FF-








+%
FJ









mil









FN
5.3
5.3
5.0
0.17
0.222
5.20
0.32
0.43

\GI?








K^A] '
GQ
5.4
3.8
2.2
1.60
3.596
3.80
-2.71
-2.60

GZ


















¦S/
HK
5.0
5.2
5.1
0.10
0.148
5.10
0.10
0.22

HL
4.6
5.7
3.6
1.05
2.049
4.63
-0.91
-0.79

HP








**
> •.¦,1
hx









I
5.0
4.9
5.0
0.06
0.074
4.97
-0.19
-0.07

ID
3.1
3.5
2.5
0.50
0.738
3.03
-4.37
-4.26
u
-itS
-« #¦








—,
>"'¦









y 4
c..
JE
5.0
5.8
6.3
0.66
0.960
5.70
1.40
1.52

JG








' #iv'
JM








^4 A
JK









JQ








• V
JS
5.9
5.5
5.5
0.23
0.295
5.63
1.25
1.37

JX
5.3
5.2
4.8
0.26
0.369
5.10
0.10
0.22

JY
6.4
6.9
7.7
0.66
0.960
7.00
4.21
4.33
It
K _
4.9
4.5
4.8
0.21
0.295
4.73
-0.69
-0.58

-KT'


















' •*
KX








<T>
MP








-
MT









MV








•''
MY









N








¦
in I"
• Q
	V
No data submitted
Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
ft = Above control limit
II = Below control limit
-------
tr
13/30

ESD-LV Performance Evaluation: Blind-A, 21-Oct-1997

	^
Radium-226







\
Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation

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








'•:
NH
4.6
4.6
5.5
0.52
0.665
4.90
-0.33
-0.22

NJ
6.7
5.8
6.0
0.47
0.665
6.17
2.41
2 53

fcK :








A*1 . s
NO
5.4
5.5
5.6
0.10
0.148
5.50
0.97
1.08

O
4.5
5.0
4.7
0.25
0.369
4.73
-0.69
-0.58

OB









OF
4.4
4.4
3.6
0.46
0.591
4.13
-1.99
-1.88

OM








- •
OS\









OX








'' •: '
OY
4.4
4.8
4.0
0.40
0.591
4.40
-1.42
-1.30

P
4.7
5.4
5.9
0.60
0.886
5.33
0.60
0.72

PA









PB
5.1
5.0
5.2
0.10
0.148
5.10
0.10
0.22

PD








• -
PG
3.5
3.9
4.8
0.67
0.960
4.07
-2.14
-2.02

PM









PQ








X>. ' v " '
y** \
PW
7.4

7<5
0.21
0.296
7.57
\6»44-
5.56

Q
7.6
7.1
7.0
0.32
0.443
7.23
4.72
4.84
ir
QM
4.8
4.8
4.7
0.06
0.074
4.77
-0.62
-0.51

QP








- •
QQ
6.2
5.9
5.4
0.40
0.591
5.83
1.69
1.80

QT
5.0
5.9
5.6
0.46
0.665
5.50
0.97
1.08

QU
51
5.3
5.8
0.36
0.517
5.40
0.75
0.87

QW








•
QX
16.8
14.1:
18;9
2.41
5.846
16.60
25.00
25.li
X
QZ
4.7
4.6
4.4
0.15
0.222
4.57
-1.06
-0.94

RB








•
RD
10J2
ID;?
9.9
0.40
0.591
10.27
11.29
il.40
>:
RF







s
•
RG









RI








' 9
RK
5.3
5.1
4.8
0.25
0.369
5.07
0.03
0.14

RP








»
RR









RU








' •
RZ
1.9
1.8
2.0
0.10
0.148
1.90 ;
-6.83 :
-6,71
X
S
5.1
4.8
4.8
0.17
0.222
4.90
-0.33
-0.22

sc
4.4
3.9
4.9
0.50
0.738
4.40
-1.42
-1.30

SD
8.7
7.0
7.2
0.93
1.486
7.63
5.58
5.70
X
SF
4.9
51
4.7
0.20
0.295
4.90
-°-33
-0.22

SG








•
SI
4.4
4.4
3.9
0.29
0.369
4.23
-1.78
-1.66

• = No data submitted TAG SYMBOLS ft = Above control limit
0 = Insufficient data	x = Determined to be an outlier	It = Below control limit
-------
(t
"S
ESD-LV Performance Evaluation: Blind-A, 21-Oct-1997	14/30
/
Radium-226
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
111 J
Normalized deviation
(grand-avg) (known) Tag










SM
5.3
5.3
5.6
0.17
0.222
5.40
0.75
0.87

sn;









so








'•
SR









ss
5.1
4.7
5.0
0.21
0.295
4.93
-0.26
-0.14

sx
5.1
5.0
5.0
0.06
0.074
5.03
-0.04
0.07

sz
5.1
7.9
6.1
1.42
3.033
6.37
2.84
2.96

T
5.1
5.0
5.1
0.06
0.074
5.07
0.03
0.14

TD
3.7
4.0
4.0
0.17
0.222
3.90
-2.50
-2.38

':TL:








f f %
TN
5.6
5.3
5.7
0.21
0.295
5.53
1.04
1.15

TQ
5.0
4.9
4.5
0.26
0.369
4.80
-0.55
-0.43

:TSV









4ttil








'' ;
u
5.2
5.3
5.3
0.06
0.074
5.27
0.46
0.58

UA
8.5
8sl
8.6
0.26


WMr,
^ 136

UK









UP
5.6
5.7
6.2
0.32
0.443
5.83
1.69
1.80

UQ
4.9
4.9
5.2
0.17
0.222
5.00
-0.12
0.00

UY









VA
6.9
6.0
6.9
0.52
0.665
6.60
3.35
3.46
1
VC









VH









VI
5.8
5.3
5.9
0.32
0.443
5.67
1.33
L44

7yj>








-
;VM.








SS
vo









VT








: \
W
4.8
4.6
4.9
0.15
0.222
4.77
-0.62
-0.51

WE









WH
4.9
4.7
4.7
0.12
0.148
4.77
-0.62
-0.51

WO
3.2
4.9
4.2
0.85
1.486
4.10
-2.07
-1.95

WB








ri7:;v
WW








r-s-
X
4.8
5.0
5.1
0.15
0.222
4.97
-0.19
-0.07

¦:XA-









xc








i
XD^








.V. >
XF'








V
XI ;









XJ








- **-%'>
XK









XL
4.8
5.0
5.2
0.20
0.295
5.00
-0.12
0.00

XM
4.5
4,2
6.1
1.02
1.767
4.93
-0.26
-0.14

hi I"
• Q
	<
No data submitted
Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
ft = Above control limit
II = Below control limit j
-------
15/30
ESD-LV Performance Evaluation: Blind-A, 21-Oct-1997
Radium-226
Lab Res. 1
Exper. Rng anal	Normalized deviation
Res. 2 Res. 3 Sigma (R + SR) Average (grand-avg) (known) Tag
- ,
xo
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
1.90
X
RZ
4.80

AF
5.40

SM
2.33
X
AU
4.83

BK
5.40

QU
3.03

ID
4.83

BA
5.40

c
3.80

GQ
4.87

BO
5.47

EL
3.90

TD
4.90

SF
5.50

QT
3.90

BN
4.90

S
5.50

NO
4.03

EB
4.90

NH
5.50

AJ
4.07

PG
4.93

XM
5.53

TN
4.10

WO
4.93

SS
5.60

DE
4.13

OF
4.97

X
5.63

JS
4.13

AH
4.97

I
5.67

VI
4.23

SI
4.97

ER
5.70

JE
4.40

SC
4.97

BC
5.83

UP
4.40

OY
5.00

XL
5.83

QQ
4.43

M
5.00

UQ
5.87

FE
4.43

L
5.00

E
5.90

CJ
4.43

DT
5.03

SX
5.90

AZ
4.47

CA
5.07

T
5.97

AK
4.57

QZ
5.07

RK
6.17

NJ
4.57

AE
5.10

PB
6.37

SZ
4.60

BH
5.10

JX
6.43
ft
LT
4.63

HL
5.10

HK
6.60
ft
VA
4.67

A
5.10

BM
7.00
ft
JY
4.73

O
5.10

BB
7.23
ft
Q
4.73

K
5.13

DB
7.57
X
PW
4.77

WH
5.17

EO
7.63
X
SD
4.77

W
5.17

AL
8.40
X
UA
4.77

QM
5.20

FN
10.27
X
RD
4.77

AW
5.27

U
16.60
X
QX
4.80

TQ
5.33

P
30.33
X
LR
4.80

CE
5.37

DZ
155.83
X
EV
% responding labs
Frequency distribution
10-
_klB_

JUaH|	¦-
f"
—t—
-4	-2	0	+2	+4
Normalized deviation of the mean from the known value
-HUB.
-6
+6
• = No data submitted
0 = Insufficient data
TAG SYMBOLS
x = Determined to be an outlier
ft = Above control limit
JJ. = Below control limit
-------
ESD-LV Performance Evaluation: Blind-A, 21-Oct-1997
16/30
Radium-226
% responding labs	Frequency distribution
10-

"T- l-f-BllhJfMiT -
-2	0	+2
	, ¦ ,	, ¦	¦¦	My ¦ ay ¦ , ¦	— | —— ^ «
¦6	-4	-2	0	+2	+4	+6
Normalized deviation of the mean from the grand average
-------
ESD-LV Performance Evaluation: Blind-A, 21-Oct-1997
17/30
Radium-228	Statistical Summary	182 Participants
The known value of this nuclide is 5.0 pCi/1 with an expected precision of 1.3; the control limits
are 2.7 to 7.3; the warning regions are 2.7 to 3.5 and 6.5 to 7.3
98(53.8 %) Failed to respond
2(1.1 %) Outliers
4(2.2 %) Out of control
but not an outlier
Statistic
, 68(37.4 %) Within all limits I
Respondents
• 10(5.5 %) In warning zone
but within control
Non-outliers
Mean
5.24
Grand Avg 5.05
Std. Dev.
1.65
1.16
Variance
2.74
1.34
% Coef. of Var.
31.60
22.91
% deviation of mean from known value
4.72
1.01
Norm. dev. of mean from known value
0.14
0.04
Median
5.03
5.00
% deviation of median from known value
0.67
0.00
Norm. dev. of median from known value
0.02
0.00
6(7.1 %) More than 3 norm. S.D.
10(11.9 %) Between 2 and 3 norm. S.D. *
,45(53.6 %) Within 1 norm. S.D.
of known value
* 23(27.4 %) Between 1 and 2 norm. S.D.
-------

18/30

E8D-LV Performance Evaluation: Blind-A, 21-Oct-1997


Radium-228








Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation

Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
A
3.4
3.9
4.3
0.45
0.409
3.87
-1.58
-1.51

AE
4.3
4.3
4.5
0.12
0.091
4.37
-0.91
-0.84

AF
6.2
6.2
6.5
0.17
0.136
6.30
1.66
1.73

AH
4.1
4.2
4.1
0.06
0.045
4.13
-1.22
-1.15

AJ
3.2
3.2
3.0
0.12
0.091
3.13
-2.55
-2.49

AK
6.0
6.7
6.2
0.36
0.318
6.30
1.66
1.73

AL
3.5
4.3
3.8
0.40
0.363
3.87
-1.58
-1.51

AP








V
AR








. / •>
AU








r'V"k;V
AW
5.3
5.4
6.1
0.44
0.363
5.60
0.73
0.80

AZ
5.1
5.2
6.3
0.67
0.545
5.53
0.64
0.71

BA
5.3
6.1
7.0
0.85
0.772
6.13
1.44
1.51

BB









BC
5.3
5.3
5.6
0.17
0.136
5.40
0.47
0.53

BGJ









BH
4.0
4.9
4.4
0.45
0.409
4.43
-0.82
-0.75

BK
4.7
4.3
4.8
0.26
0.227
4.60
-0.60
-0.53

:BL[\








¥* CO-*
' -
BM
4.0
5.3
5.8
0.93
0.818
5.03
-0.02
0.04

BN








' V T*
v
BO
4.9
5.4
4.9
0.29
0.227
5.07
0.02
0.09

BS









BW








, # '
C
5.5
5.2
5.0
0.25
0.227
5.23
0.24
0.31

CA
3.3
3.8
4.4
0.55
0.500
3.83
-1.62
-1.55

CC









CE
6.4
5.8
5.3
0.55
0.500
5.83
1.04
1.11

CJ
4.4
4.1
4.3
0.15
0.136
4.27
-1.04
-0.98

CO








V*'-
CP








,~
cs
6.5
5.5
5.3
0.64
0.545
5.77
0.95
102

cx









D








' • -
DB
4.3
4.1
4.5
0.20
0.182
4.30
-1.00
-0.93

DD








"
DE
5.8
5.9
6.2
0.21
0.182
5.97
1.22
1.29

di








r' •
DO








-
DT
5.1
.5.0
4.5
0.32
0.273
4.87
-0.24
-0.18

DZ
5.3
4.7
5.1
0.31
0.273
5.03
-0.02
0.04

E
4.4
4.6
4.7
0.15
0.136
4.57
-0.64
-0.58

EB
4.5
4.0
4.3
0.25
0.227
4.27
-1.04
-0.98

EL
4.5
6.1
3.9
1.14
1.000
4.83
-0.29
-0.22

EO
5.0
3.9
4.9
0.61
0.500
4.60
-0.60
-0.53

• s No data submitted

TAG SYMBOLS

ft = Above control limit
0 = Insufficient data	x = Determined to be an outlier	s Below control limit
-------
V
ESD-LV Performance Evaluation: Blind-A, 21-Oct-1997	19/30
v		
Radium-228
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
£R '






' ' " * * - •

%• c.
vEV;








liV-"
EX









;FBi



















:Fdg









fFii.;








X i* V-
FN
4.2
4.7
4.3
0.26
0.227
4.40
-0.87
-0.80










¦•g§>
sys

12.8
0.60

12:801
10,33 .>
10.39;
arx -.
;GZ?








,









k-; i~
HK
4.3
4.9
5.2
0.46
0.409
4.80
-0.33
-0.27

HL
5.4
5.2
5.3
0.10
0.091
5.30
0.33
0.40

HP - :
"








•
HX ;









I
7.6
6.9
6.9
0.40
0.318
7.13
2.78
2.84

ID
5.4
5.0
5.1
0.21
0.182
5.17
0.15
0.22

'W*


















'?*'¦ r
JE
6.8
6.7
6.4
0.21
0.182
6.63
2.11
2.18

jm








•
JM








\.'t* ¦:
JN








t -
JQ








•
A* • s
JS
4.8
5.6
4.1
0.75
0.682
4.83
-0.29
-0.22

JX
1.5
1.6
1.6
0.06
0.045
1.57
-4.64
-4.57
11
JY
6.8
7.4
6.9
0.32
0.273
7.03
2.64
2.71

K
5.5
6.2
6.2
0.40
0.318
5.97
1.22
1.29

:JSBi



















KX









L
5.1
5.5
5.1
0.23
0.182
5.23
0.24
0.31

.leT








'V*
LF









LL;








:
/ui?








C
LT
14.1
11;7
12.9
1:20
1.172
12.90.;
10:46
10:53

M
5.1
5.1
6.0
0.52
0.409
5.40
0.47
0.53

MF








*•'
MP








*V-
MT








•
MV








¦ •
MY








¦¦ •
N '
4.5
5.2
4.6
0.38
0.318
4.77
-0.38
-0.31

• = No data submitted TAG SYMBOLS tf = Above control limit
0 = Insufficient data	x s Determined to be an outlier	11 = Below control limit
-------
ESD-LV Performance Evaluation: Blind-A, 21-Oct-1997
	
Radium-228
Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation

Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
:«NA>i









NH
5.1
4.0
4.8
0.57
0.500
4.63
-0.56
-0.49

NJ
5.7
5.5
5.3
0.20
0.182
5.50
0.60
0.67

NK









NO
2.5
3.5
4.5
1.00
0.909
3.50
-2.07
-2.00

O
3.9
3.7
3.9
0.12
0.091
3.83
-1.62
-1.55

OB








OF
5.7
3.5
3.2
1.37
1.259
4.13
-1.22
-1.15

OM









OS:









OX









OY
4.0
4.1
3.8
0.15
0.136
3.97
-1.44
-1.38

P
4.5
3.2
4.2
0.68
0.591
3.97
-1.44
-1.38

PA:









PB
5.0
5.2
5.0
0.12
0.091
5.07
0.02
0.09

PD









PG








v
PM









PQ









PW
5.4
5.4
5.6
0.12
0.091
5.47
0.55
0.62

Q
5.6
5.9
6.3
0.35
0.318
5.93
1.18
1.24

QM








A
QP








-
QQ








* ' 'V'
QT
7.8
6.4
6.8
0.72
0.636
7.00
2.60
2.66

QU
2.5
3.0
3.5
0.50
0.454
3.00
-2.73
-2.66

QW^









QX
8.7
6.4
6.9
1.21
1.086
7.33
3.04
3.11
if'"'
QZ
4.4
4.7
4.4
0.17
0.136
4.50
-0.73
-0.67

KB.









RD
6.2
6.2
6.2
0.00
0.000
6.20
1.53
1.60

RF









RG








•y-v •'*•
RI









RK








¦: V f
RP









RR









RU









RZ
4.9
4.5
4.5
0.23
0.182
4.63
-0.56
-0.49

S
5.0
4.2
4.7
0.40
0.363
4.63
-0.56
-0.49

sc
6.0
5.6
5.4
0.31
0.273
5.67
0.82
0.89

SD
5.5
5.3
5.4
0.10
0.091
5.40
0.47
0.53

SF
7.4
7.2
7.4
0.12
0.091
7.33
3.04
3.11
ft
SG








•
SI
3.8
3.7
3.7
0.06
0.045
3.73
-1.75
-1.69

• s No data submitted

TAG SYMBOLS

ft s Above control limit
0 — Insufficient data	x = Determined to be an outlier	 ^ = Below control limit
-------
A
ESD-LV Performance Evaluation: Blind-A, 21-Oct-1997	21/30 I
t			
Radium-228







<
Lab
Res. 1


Exper.
Rng anal

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










SM
6.3
7.2
7.4
0.59
0.500
6.97
2.55
2.62

(M\
: so









SH








'iff
ss
7.2
6.2
8.0
0.90
0.818
7.13
2.78
2.84

SX
2.8
1.2
4.7
1.75
2.124
2.90
-2.87
-2.80

sz
7.7
7.0
3.9
2.02
2.384
6.20
1.53
1.60

T
5.2
5.7
5.5
0.25
0.227
5.47
0.55
0.62

TD
7.3
4.6
2.9
2.22
2.903
4.93
-0.16
-0.09

;:TL':








m.
TN
4.9
4.6
4.7
0.15
0.136
4.73
-0.42
-0.36

TQ
5.3
5.6
4.8
0.40
0.363
5.23
0.24
0.31

' Tfij"









TY








. JsSSi
U
4.4
3.9
4.4
0.29
0.227
4.23
-1.09
-1.02

UA









UK
5.7







St
UP
5.4
5.3
0.21
0.182
5.47
0.55
0.62

UQ
5.6
4.7
5.6
0.52
0.409
5.30
0.33
0.40

-to-









VA
11.3
5.9
8.4
2.70
3.769
8.53
4.64
4/71
it
iyc
VH








• >&
VI
6.1
5.6
5.4
0.36
0.318
5.70
0.87
0.93









m
-,vm









yp
;VT/.








||
w
5.0
4.8
5.1
0.15
0.136
4.97
-0.11
-0.04

WE








K;
WH
3.1
3.3
3.8
0.36
0.318
3.40
-2.20
-2.13

WO
4.2
4.1
4.0
0.10
0.091
4.10
-1.27
-1.20

WR
4.4
4.7
4-8
0.21
0.182
4.63
-0.56
-0.49

WW









X
4.3
4.5
4.3
0.12
0.091
4.37
-0.91
-0.84

XA









XC
' ••









XDf









XF









XI









XJ








* t
XK








^ %<>y;
XL
5.3
5.3
5.3
0.00
0.000
5.30
0.33
0.40

XM
3.5
4.5
3.3
0.64
0.545
3.77
-1.71
-1.64

• =
No data submitted

TAG SYMBOLS

ft = Above control limit
0 =
v-	
Insufficient data
x =
Determined to be an outlier
W = Below control limit
-------
22/30
ESD-LV Performance Evaluation: Blind-A, 21-Oct-1997
Radium-228
Lab Res. 1
Exper. Rng anal	Normalized deviation
Res. 2 Res. 3 Sigma (R + SR) Average (grand-avg) (known) Tag
XN>
¦- ?r ^
H.O
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag Lab
Average
Tag
Lab
1.57

JX
4.60
BK
5.47

T
2.90

sx
4.63
S
5.47

PW
3.00

QU
4.63
WR
5.50

NJ
3.13

AJ
4.63
RZ
5.53

AZ
3.40

WH
4.63
NH
5.60

AW
3.50

NO
4.73
TN
5.67

SC
3.73

SI
4.77
N
5.70

VI
3.77

XM
4.80
HK
5.77

CS
3.83

O
4.83
JS
5.83

CE
3.83

CA
4.83
EL
5.93

Q
3.87

AL
4.87
DT
5.97

K
3.87

A
4.93
TD
5.97

DE
3.97

P
4.97
W
6.13

BA
3.97

OY
5.03
DZ
6.20

SZ
4.10

WO
5.03
BM
6.20

RD
4.13

OF
5.07
PB
6.30

AK
4.13

AH
5.07
BO
6.30

AF
4.23

U
5.17
ID
6.63

JE
4.27

EB
5.23
L
6.97

SM
4.27

CJ
5.23
C
7.00

QT
4.30

DB
5.23
TQ
7.03

JY
4.37

X
5.30
UQ
7.13

SS
4.37

AE
5.30
XL
7.13

I
4.40

FN
5.30
HL
7.33
ft
SF
4.43

BH
5.40
SD
7.33
ft
QX
4.50

QZ
5.40
M
8.53
ft
VA
4.57

E
5.40
BC
12.80
X
GQ
4.60

EO
5.47
UP
12.90
X
LT
% responding labs

Frequency distribution







-n_
-r"
+6
~r~
-6
T
-4	-2	0	+2	+4
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
It s Above control limit
II = Below control limit
-------
ESD-LV Performance Evaluation: Blind-A, 21-Oct-1997	23 / 30
Radium-228
% responding labs	Frequency distribution
io-r
¦-	- lay
-4	"2	0	+2	+4	+6
Normalized deviation of the mean from the grand average
-------
ESD-LV Performance Evaluation: Blind-A, 21-Oct-1997
24/30
Uranium (Natural)	Statistical Summary	182 Participants
The known value of this nuclide is 31.0 pCi/1 with an expected precision of 3.0; the control limits
are 25.8 to 36.2; the warning regions are 25.8 to 27.5 and 34.5 to 36.2
83(45.6 %) Failed to respond
5(2.7 %) Outliers
7(3.8 %) Out of control
but not an outlier
Statistic
, 78(42.9 %) Within all limits
Respondents
9(4.9 %) In warning zone
but within control
Non-outliers
Mean
29.53
Grand Avg 29.52
Std. Dev.
4.57
2.36
Variance
20.85
5.58
% Coef. of Var.
15.46
8.00
% deviation of mean from known value
-4.75
-4.76
Norm. dev. of mean from known value
-0.32
-0.62
Median
29.63
29.62
% deviation of median from known value
-4.41
-4.46
Norm. dev. of median from known value
-0.30
-0.59
12(12.1 %) More than 3 norm. S.D.
9(9.1 %) Between 2 and 3 norm. S.D.
,50(50.5 %) Within 1 norm. S.D.
t	of known value
28(28.3 %) Between 1 and 2 norm. S.D.
-------
25/30	ESD-LV Performance Evaluation: Blind-A, 21-Oct-1997
Uranium (Natural)
Lab
Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
A
30.4
31.9
29.5
1.21
0.473
30.60
0.62
-0.23
AE
32.7
33.4
31.8
0.80
0.315
32.63
1.80
0.94
AF
29.0
28.0
27.5
0.76
0.295
28.17
-0.78
-1.64
AH
28.2
29.1
29.3
0.59
0.217
28.87
-0.38
-1.23
AJ
39.4
31.5
32.2
4.37
2.058
34.37
2.80
1.94
AK
32.6
32.3
31.1
0.79
0.295
32.00
1.43
0.58
AL
33.4
33.5
34.6
0.67
0.236
33.83
2.49
1.64
AP.








AR
27.3
26.7
26.8
0.32
0.118
26.93
-1.50
-2.35
au:








AW
29.6
28.4
29.3
0.62
0.236
29.10
-0.24
-1.10
AZ
28.5
28.9
30.7
1.17
0.433
29.37
-0.09
-0.94
BA
26.4
29.8
28.6
1.72
0.669
28.27
-0.73
-1.58
BB
27.3
27.9
27.6
0.30
0.118
27.60
-1.11
-1.96
BC
30.2
30.5
29.8
0.35
0.138
30.17
0.37
-0.48
BG








BH
31.8
29.2
31.8
1.50
0.512
30.93
0.81
-0.04
BK
30.9
30.8
30.7
0.10
0.039
30.80
0.74
-0.12
BL








BM
29.6
29.5
31.3
1.01
0.354
30.13
0.35
-0.50
BN
17.1
27.8
23.1
5.36
3.108
22.67
-3.96
-4.81 U
BO
29.0
30.1
30.2
0.67
0.236
29.77
0.14
-0.71
BS








BW







/- • -
C
31.0
31.1
30.3
0.44
0.158
30.80
0.74
-0.12
CA
26.9
23.1
25.4
1.91
0.748
25.13
-2.54
-3.39 J _
CC







-9 ¦ -
CE
32.8
32.6
32.0
0.42
0.158
32.47
1.70
0.85
CJ
27.0
26.0
27.0
0.58
0197
26.67
-1.65
-2.50
CO







Fx™.
CP







..j-j •
CS
30.3
32.4
31.5
1.05
0.413
31.40
1.08
0.23
CX
n
34.8
33.7
35.5
0.91
0.354
34.67
2.97
2.12
JLr
DB
24.3
26.0
23.6
1.23
0.473
24.63
-2.82
-3.68 4
DD







" • ^
DE
27.5
27.6
28.7
0.67
0.236
27.93
-0.92
-1-77
DI







• -
DO
31.1
31.5
30.7
0.40
0.158
31.10
0.91
0.06
DT
27.5
30.7
31.7
2.19
0.827
29.97
0.26
-0.60
DZ
24.4
24.9
25.7
0.66
0.256
25.00
-2.61
-3.46
E
28.9
30.0
30.5
0.82
0.315
29.80
0.16
-0.69
EB
26.8
28.7
25.5
1.61
0.630
27.00
-1.46
-2.31
EL
28.1
29.5
30.8
1.35
0.532
29.47
-0.03
-0.89
EO







<#
• s No data submitted TAG SYMBOLS IT = Above control limit
0 • s Insufficient data	x s Determined to be an outlier	It = Below control limit
-------
ESD-LV Performance Evaluation: Blind-A, 21-Oct-1997	26/30
f		1
Uranium (Natural)
Lab Res. 1 Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
ER
30.1
28.4
30.3
1.04
0.374
29.60
0.04
-0.81

'••EV;;







1 - x/v
¦ EX::








*
FE
32.0
31.0
32.0
0.58
0.197
31.67
1-24
0.38

FF-:








FJ
32.0
32.1
32.1
0.06
0.020
32.07
1.47
0.62

:'FL-








FN"
37.0

40.0
is 53
0;59l:
&B1,
628
4;43<
¦ i'*&
GI








•,v/
G9t
29.2
28.9
28.5
0.35
0.138
28.87
-0.38
-1.23

...gz;









v ¦ ¦ ¦<"A
"HI5!.:








- V1 -,
-
HK
33.8
42.1
40.4
li65
0,650
40 43
6:30
:?5:45fi
;x
HL
28.5
30.7
28.9
1.17
0.433
29.37
-0.09
-0.94

HP








spy
£* A
HX








'sW;
• >
I
31.1
29.4
30.7
0.89
0.335
30.40
0.51
-0.35

ID
27.6
38.6
31.8
5.55
3.221
32.67
1.81
0.96

¦;iy?









"J:-)









JE
29.1
29.6
28.5
0.55
0.217
29.07
-0.26
-1.12

JG








1
JM









JN
27.6
30.1
32.7
2.55
1.008
30.13
0.35
-0.50
	; J
«IQ









JS
32.2
32.0
31.8
0.20
0.079
32.00
1.43
0.58

JX









JY
30.5
29.8
31.8
1.01
0.394
30.70
0.68
-0.17

K
27.5
25.6
24.6
1.47
0.571
25.90
-2.09
-2.94

BE









KT
27.0
28.0
30.0
1.53
0.591
28.33
-0.69
-1.54

KX








• '%
L
32.1
30.8
33.8
1.50
0.591
32.23
1.56
0.71

LET








• *?¦
LF
30.0
29.0
31.6
1.31
0.512
30.20
0.39
-0.46

IX









LR









LT








\#v
M
18.9
19.1
19.0
6.10
0.039 '
16.00
-6.08
-6.93

MF









MP








' '•
MT








:• -
MV









MY









N








;>
• h No data submitted

TAG SYMBOLS

ft s Above control limit
0 s Insufficient data	x = Determined to be an outlier	Ji = Below control limit
— .. 	 . 	—
-------
27/30	ESD-LV Performance Evaluation: Blind-A, 21-Oct-1997
Uranium (Natural)
Lab
Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
-------
'
ESD-LV Performance Evaluation: Blind-A, 21-Oct-1997	26/30
Uranium (Natural)
Lab Res. 1 Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
N
Normalized deviation
(grand-avg) (known) Tasr










SM
30.3
30.6
30.7
0.21
0.079
30.53
0.58
-0.27

7sn|








.yw,
so
28.3
26.3
28.6
1.25
0.453
27.73
-1.03
-1.89











ss
30.0
30.1
30.1
0.06
0.020
30.07
0.31
-0.54

sx
28.9
29.3
30.2
0.67
0.256
29.47
-0.03
-0.89

sz
28.9
29.5
30.5
0.81
0.315
29.63
0.06
-0.79

T
26.6
31.0
30.1
2.32
0.866
29.23
-0.17
-1.02

TD
32.0
31.6
32.4
0.40
0.158
32.00
1.43
0.58

\TL,








'.9 ft
:TN;









TQ
30.4
31.3
34.2
1.99
0.748
31.97
1.41
0.56

'T8~'









TY.








M
U
28.2
27.9
27.8
0.21
0.079
27.97
-0.90
-1.75

UA








IM
UK









UP
27.5
28.0
28.3
0.40
0.158
27.93
-0.92
-1.77

UQ









UY








:
VA
30.4
29.2
30.5
0.72
0.256
30.03
0.29
-0.56

:ybT









VH









VI
28.6
29.1
28.7
0.26
0.098
28.80
-0.42
-1.27

Vj








>+*
VM









vo
30.8
31.3
29.7
0.82
0.315
30.60
0.62
-0.23

vt;-








--•y.v^syy;.
w
28.2
28.9
27.9
0.51
0.197
28.33
-0.69
-1.54

WE









WH
35.2
31.2
32.0
2.12
0.788
32.80
1.89
1.04

WO
28.8
26.6
27.7
1.10
0.433
27.70
-1.05
-1.91

WR
29.6
29.6
29.9
0.17
0.059
29.70
0.10
-0.75

WW;









X
30.6
29.4
28.9
0.87
0.335
29.63
0.06
-0.79

XA
27.7
35.0
26.0
4.78
2.470
29.57
0.02
-0.83

XC









XD









. XF,'









XI









XJ









XK








#,
XL
27.3
29.5
31.6
2.15
0.847
29.47
-0.03
-0.89

XM
32.0
30.0
32.0
1.15
0.394
31.33
1.04
0.19

r
Q •
II! I"
No data submitted
Insufficient data
X =
TAG SYMBOLS
Determined to be an outlier
IT = Above control limit
s Below control limit
-------
f(	






	^
29/30
ESD-LV Performance Evaluation: Blind-A, 21-Oct-1997

f Uranium (Natural)






Lab Res. 1


Exper.
Rng anal

Normalized deviation

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






'vl* :
xo






W"



r..-•>

:¦ JV ¦ -i'.tSi , \i ../¦ * *;'t



Data sorted by Laboratory Averaj
je

Average
Tag
Lab
Average
Tag
Lab
Average Tag
Lab
0.80
X
RD
28.87

AH
30.53
SI
19.00
X
M
29.07

JE
30.60
vo
22.67
II
BN
29.10

AW
30.60
A
23.00

PW
29.13

RP
30.67
NA
24.63

DB
29.13

NK
30.70
JY
24.90

OY
29.23

NO
30.80
C
25.00
U
DZ
29.23

T
30.80
BK
25.13
U
CA
29.37

QZ
30.93
BH
25.37

SF
29.37

HL
31.10
DO
25.90

K
29.37

AZ
31.33
XM
26.00

QU
29.47

XL
31.40
CS
26.67

CJ
29.47

sx
31.50
QQ
26.93

AR
29.47

EL
31.67
FE
27.00

EB
29.50

OS
31.97
TQ
27.07

QM
29.57

XA
32.00
TD
27.10

NJ
29.60

ER
32.00
JS
27.37

RZ
29.63

X
32.00
AK
27.60

BB
29.63

sz
32.07
QX
27.70

WO
29.70

WR
32.07
FJ
27.73

SO
29.77

BO
32.23
L
27.93

UP
29.80

E
32.47
CE
27.93

DE
29.97

DT
32.57
PB
27.97

U
30.03

VA
32.63
AE
28.03

P
30.07

ss
32.67
ID
28.07

S
30.13

RG
32.77
Q
28.13

RK
30.13

JN
32.80
WH
28.17

AF
30.13

BM
33.83
AL
28.27

BA
30.17

BC
34.33
SC
28.33

W
30.20

LF
34.37
AJ
28.33

KT
30.33

PG
34.67
CX
28.63

SD
30.40

OB
38.67 x
FN
28.80

VI
30.40

I
40.43 x
HK
28.87

GQ
30:53

SM
49.17 x
NH
• = No data submitted

TAG SYMBOLS

Tf = Above control limit
0 s Insufficient data
V*	

x s Determined to be an outlier
= Below control limit
-------
ESD-LV Performance Evaluation: Blind-A, 21-Oct-1997
30/30
Uranium (Natural)
% responding labs
Frequency distribution
10-
a.
r~
-6
UBm^mmUU

J4.
jp,
-4	-2	0	+2	+4
Normalized deviation of the mean from the known value
+6
% responding labs
Frequency distribution
10-
-4	-2	0+2+4
Normalized deviation of the mean from the grand average
-------
United States	Office of Research and	EPA/600/R-98/011B
Environmental Protection Development	January 1998
Agency	Washington, DC 20460
vvEPA Blind-B Performance
Evaluation Study
A Statistical Evaluation
of the October 21, 1997 Data
006ECB98COV-011E
-------
Blind-B
Performance Evaluation Study
October 21, 1997
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-B; October 21, 1997.
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: Blind-B, 21-Oct-I997
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 hy a new pRge or n 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 sure 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 showB 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.
-------
2/44	ESD-LV Performance Evaluation: Blind-B, 21-Oct-1997
The Range Anal ye is (R + SR) is calculated from the range, mean range and standard error of
the range values. The range is the difference hetween 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 ia 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, 21-Oct-1997
3/44
Gross Beta	Statistical Summary	182 Participants
The known value of this nuclide is 143.4 pCiA with an expected precision of 21.5; the control limits
are 106.1 to 180.7; the warning regions are 106.1 to 118.5 and 168.3 to 180.7
43(23.6 %) Palled to respond \	^	; 115(63.2 %) Within all limits
6(3.3 %) Outliers ** /
V

5(2.7 %) Out ol control ' XK.

13(7.1 %) In warning zone
but not an outlier ^
1
i i
but within control
Statistic
Respondents
Non-outliers
Mean
136.09
Grand Avg 13427
Std. Dev.
36.50
14.99
Variance
1332.02
224.56
% Coef. of Var.
26.82
11.16
% deviation of mean from known value
-5.09
-6.36
Norm. dev. of mean from known value
-0.20
-0.61
Median
134.63
134.63
% deviation of median from known value
-6.11
-6.11
Norm. dev. of median from known value
-0.24
-0.59
11(7.9 %) More than 3 norm. S.D.
13(9.4 %) Between 2 and 3 norm. S.D.
. 72(51.8 %) Within 1 norm. S.D.
of known value
43(30.9 %) Between 1 and 2 norm. S.D.

-------
ESD-LV Performance Evaluation: Blind-B, 21-Oct-1997
Gross Beta
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
1
Normalized deviation
(grand-avg) (known) Toe
A
150.1
141.7
154.0
6.29
0.338
148.60
1.15
0.42
AE
113.8
116.1
115.5
1.19
0.063
115.13
-1.54
-2.28
AF
138.4
145.0
143.8
3.52
0.181
142.40
0.65.
-0.08
AH
138.4
140.7
140.0
1.18
0.063
139.70
0.44
-0.30
AJ
118.3
117.9
119.3
0.72
0.038
118.50
-1.27
-2.01
AK
137.2
139.0
134.3
2.37
0.129
136.83
0.21
-0.53
AL
1345
117.5
129.1
8.69
0.467
127.03
-0.58
-1.32
AP








AR
145.3
134.5
138.0
5.51
0.297
139.27
0.40
-0.33
AU
121.4
125.6
125.8
2.48
0.121
124.27
-0.81
-1.54
AW
129.4
130.5
131.6
1.10
0.060
130.50
-0.30
-1.04
AZ
133.0
134.0
136.0
1.53
0.082
134.33
0.00
-0.73
BA
144.9
147.4
136.5
5.71
0.299
142.93
0.70
-0.04
BB
135.2
133.0
131.2
2.00
0.110
133.13
-0.09
-0.83
BC
124.6
126.6
125.2
1.03
0.055
125.47
-0.71
-1.44
BG








BH
148.0
148.4
146.2
1.17
0.060
147.53
1.07
0.33
BK
141.0
141.0
139.0
1.15
0.055
140.33
0.49
-0.25
BL








BM
134.2
136.9
133.8
1.69
0.085
134.97
0.06
-0.68
BN
113.1
108.7
102.8
5.17
0.283
108.20
-2.10
-2.84
BO
151.8
137.8
148.0
7.24
0.385
145.87
0.93
0.20
BS
143.2
143.0
143.9
0.47
0.025
143.37
0.73
0.00
BW







• -
C
135.9
136.7
140.0
2.17
0.113
137.53
0.26
-0.47
CA
162.6
159.4
149.3
6.94
0.365
157.10
1.84
110
CC







• • \
CE
146.4
136.6
131.7
7.48
0.404
138.23
0.32
-0.42
CJ
140.0
130.0
140.0
5.77
0.275
136.67
0.19
-0.54
CO
110.8
121.6
124.3
7.14
0.371
118.90
-1.24
-1.97
CP
154.7
148.8
141.3
6.72
0.368
148.27
1.13
0.39
CS
131.0
136.0
127.0
4.51
0.247
131.33
-0.24
-0.97
CX
117.0
106.0
107.0
6.08
0.302
110.00
-1.96
-2.69
D
148.0
144.0
145.0
2.08
0.110
145.67
0.92
0.18
DB
135.0
137.0
138.0
1.53
0.082
136.67
0.19
-0.54
DD
129.1
130.5
128.5
1.03
0.055
129.37
-0.40
-1.13
DE
139.7
139.8
139.9
0.10
0.005
139.80
0.45
-0.29
DI







* • " *
DO







* •
DT
153.3
149.4
152.7
2.10
0.107
151.80
1.41
0.68
DZ
120.4
125.9
125.0
2.95
0.151
123.77
-0.85
-1.58
E
138.4
137.3
138.6
0.70
0.036
138.10
0.31
-0.43
EB
140.0
130.0
110.0
15.28
0.824
126.67
-0.61
-1.35
EL







• .
EO
143.0
141.0
143.0
1.15
0.055
142.33
0.65
-0.09
hi
• (S)
	-J)
No data submitted
Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
ft s Above control limit
U = Below control limit
... ... -V
-------
ESD-LV Performance Evaluation: Blind-B, 21-Oct-1997
Gross Beta
Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation

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










EV 1








V\l:
EX









FE
la 1.0
129.0
130.0
1.00
0.055
130.00
. -0.34
-1.08









Wik,
FJ>
1431
138.1
286.3
8416
;6:860'-

I4T42


FL
113.6
Wm
118.3
121.1
3.84
!2,08
0.209
'sv-
0,110
117.63
MM
-1.34
•e.68
-2.08
WW


4r.'l









JE
135.4
135.2
132.0
1.91
0.093
134.20
-0.01
-0.74

JG









JM
136.0
142.0
145.0
4.58
0.247
141.00
0.54
-0.19

JN
124.6
122.8
125.1
1.21
0.063
124.17
-0.81
-1.55

JQ
196.5
163.5
179.5
16.50
0.907
179.83
3.67
2.94

JS
143.5
141.0
136.8
3.39
0.184
140.43
0.50
-0.24

JX









JY
126.0
119.0
122.0
3.51
0.192
122.33
-0.96
-1.70

K
107.9
113.8
115.9
4.15
0.220
112.53
-1.75
-2.49

KE
141.5
143.6
142.2
1.07
0.058
142.43
0.66
-0.08

KT
157.0
161.0
168.0
5.57
0.302
162.00
2.23
1.50

KX
155.0
154.0
156.0
1.00
0.055
155.00
1.67
0.93

L
122.9
122.1
119.3
1.89
0.099
121.43
-1.03
-1.77

LE
151.1
144.7
136.0
7.58
0.415
143.93
0.78
0.04

LF
140.0
140.0
140.0
0.00
0.000
140.00
0.46
-0.27

LL
159.5
153.0
146.7
6.40
0.352
153.07
1.51
0.78

LR
129.0
128.0
140.0
6.66
0.330
132.33
-0.16
-0.89

LT
121.5
116.2
127.9
5.86
0.321
121.87
-1.00
-1.73

M
45.0
46.0
45.0
0:00
0.000
46 66
'•itW/:

X
MF
169.0
170.0
170.0
0.58
0.027
169.67
2.85
2.12

MP








•
MT








- ~ .
MV
ne.o
iut>.2
110.0
6.30
0.338
111.57
-1.83
-2.56

MY
107.0
110.5
106.9
2.05
0.099
108.13
-2.11
-2.84

N








•
• = No data submitted	TAG SYMBOLS	ft s Above control limit
0 = Insufficient data	x = Determined to be an outlier	It s Below control limit
V-	^
-------
f
6/44
ESD-LV Performance Evaluation: Blind-B, 21-Oct-1997
Gross Beta
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tap
NA
152.0
155.0
151.0
2.08
0.110
152.67
1.48
0.75

NH
132.0
136.0
145.0
6.66
0.357
137.67
0.27
-0.46

NJ
134.0
133.0
135.0
1.00
0.055
134.00
-0.02
-0.76

NK
134.0
132.0
129.0
2.52
0.137
131.67
-0.21
-0.95

NO
117.0
123.0
130.0
6.51
0.357
123.33
-0.88
-1.62

O
144.9
144.4
149.3
2.70
0.135
146.20
0.96
0.23

OB
138.0
128.3
129.0
5.41
0.266
131.77
-0.20
-0.94

OF
88.4
90.9
95.6
3.66
0.198
91.63
-3.44
-4.i7
1
OM









OS
129.0
126.0
129.0
1.73
0.082
128.00
-0.51
-1.24

OX








•-
OY
115.8
112.9
113.4
1.55
0.080
114.03
-1.63
-2.37

P
30,#

27 9
1.26
0.069:


>9M
f - ¦ (
L?C /
PA








-
PB
133.0
136.2
134.7
1.60
0.088
134.63
0.03
-0.71

PD
4ilo
47®
?4610
31.07
2 236
461:67
26^67:
; 24:83'

PG
137.4
127.4
141.2
7.13
0.379
135.33
0.09
-0.65

PM
136.8
140.7
131.4
4.67
0.255
136.30
0.16
-0.57

PQ








aw
PW









Q
145.8
140.9
137.3
4.27
0.234
141.33
0.57
-0.17

QM
141.3
140.7
129.3
6.76
0.330
137.10
0.23
-0.51

QP
134.7
111.8
140.4
15.14
0.786
128.97
-0.43
-1.16

QQ
142.8
140.7
147.1
3.26
0.176
143.53
0.75
0.01

QT
123.4
126.7
130.9
3.76
0.206
127.00
-0.59
-1.32

QU
128.0
128.1
135.2
4.13
0.198
130.43
-0.31
-1.04

QW
133.0
128.8
135.3
3.30
0.179
132.37
-0.15
-0.89

QX
157.8
153.4
156.9
2.32
0.121
156.03
1.75
1.02

QZ
128.0
133.0
130.0
2.52
0.137
130.33
-0.32
-1.05

RB
146.0
147.0
148.0
1.00
0.055
147.00
1.03
0.29

RD
133.1
135.2
131.4
1.90
0.104
133.23
-0.08
-0.82

RF









RG
152.0
155.0
156.0
2.08
0.110
154.33
1.62
0.88

RI
156.5
155.0
157.1
1.08
0.058
156.20
i.77
1.03

RK









RP









RR
166.0
167.0
166.0
0.58
0.027
166.33
2.58
1.85

RU








i •• ' "-i
RZ
129.8
135.2
125.4
4.91
0.269
130.13
-0.33
-1.07

S
151.0
152.8
151.2
0.99
0.049
151.67
1.40
0.67

sc
126.0
123.0
121.0
2.52
0.137
123.33
-0.88
-1.62

SD
139.0
145.7
142.6
3.35
0.184
142.43
0.66
-0.08

SF
150.0
170.0
170.0
11.55
0.549
163.33
2.34
1.61

SG
103.0
96.0
105.0
4.73
0.247
101.33
-2.65
-3.39
SI
125.0
128.0
122.0
3.00
0.165
125.00
-0.75
-1.48

• e No data submitted	TAG SYMBOLS	ft = Above control limit
0 = Insufficient data	x = Determined to be an outlier	W s Below control limit
-------
ESD-LV Performance Evaluation: Blind-B, 21-Oct-1997	7/44
Gross Beta








Lab
Res. 1
Res. 2
Res. 3
Exper.
Rng anal

Normalized deviation

Sigma
(R + SR)
Average
(grand-avg) (known) Tae
BL.




•> V .VA-.-:


... . ..

SM
128.5
122.8
119.6
4.51
0.245
123.63
-0.86
-1.59

SN
149.4
153.1
143.3
4.95
0.269
148.60
1.15
0.42

SO
132.4
130.5
127.4
2.52
0.137
130.10
-0.34
-1.07

SR
122.7
129.1
115.8
6.65
0.365
122.53
-0.95
-1.68

ss
123.5
125.9
130.5
3.56
0.192
126.63
-0.62
-1.35

sx
149.0
143.0
140.0
4.58
0.247
144.00
0.78
0.05

sz
133.7
138.0
133.3
2.61
0.129
135.00
0.06
-0.68

T
135.7
137.4
139.6
1.95
0.107
137.57
0.27
-0.47

TD
107.9
134.6
119.2
13.51
0.739
120.63
-1.10
-1.83

TL









TN
106.5
96.7
- 96.6
118.0
5.69
0.272
99.93
-2.77
-3.50
r
TQ
118.0
124.0
3.46
0.165
120.00
-1.15
-1.89

T8









TY
139.0
138.0
139.0
0.58
0,027
138.67
0.35
-0.38
i
V
129.6
132.4
132.4
1.62
0.077
131.47
-0.23
-0.96

VA
131.0
1.32.0
130.0
1.00
0.055
131.00
-0.26
-1.00

UK









UP
142.5
144.6
144.8
1.27
0.063
143.97
0.78
0.05

UQ
137.0
136.0
132.0
2.65
0.137
135.00
0.06
-0.68

UY
126.6
128.0
127.1
0.62
0.033
127.30
-0.56
-1.30

VA
1725
175.6
179.2
3.35
0.184
175.77
3.34
2.61

VC







T
vvy'
VH









VI
117.4
105.1
97.1
10.23
0.558
106.53
-2.23
-2.97

VJ
129.0
126.0
122.0
3.51
0.192
125.67
-0.69
-1.43

VM








*? W'
VO
125.0
117.0
128.0
5.69
0.302
123.33
-0.88
-1.62

VT
158.5
152.1
144.5
7.01
0.385
151.70
1.40
0.67

W
135.0
137.0
135.0
1.15
0.055
135.67
0.11
-0.62

WE
132.0
144.0
141.0
6.24
0.330
139.00
0.38
-0.35

WH
143.1
133,0
141.8
5.49
0.277
139.30
0.40
-0.33

WO
125.0
122.0
116.0
4.58
0.247
121.00
-1.07
-1.80

WR
132.4
132.3
133.0
0.3 8
0.019
132.57
-0.14
-0.87

WW
135.9
136.5
133.6
1.53
0.080
135.33
0.09
-0.65

X
128.4
133.1
127.5
3.01
0.154
129.67
-0.37
-1.11

XA








si#*:'
v.'--* " *
XC









XD








V\* « '
XF
147,2
155.5
149.8
4.25
0.228
150.83
1.33
0 60

XI








''
XJ
102.5
102.7
108.9
3.64
0.176
104.70
-2.38
-3.12

XK
299.0
292.0
286.0
6.51
0.357
295.33
12,73
12.00
X
XL
129.9
127.8
125.7
2.10
0.115
127.80
-0.52
-1.26

XM
132.0
132.0
134.0
1.15
0.055
132.67
-0.13
-0.86

• S
No data submitted

TAG SYMBOLS

ft s Above control limit
0 B
Insufficient data
X s
Determined to be an outlier
il = Below control limit j
-------
8/44
ESD-LV Performance Evaluation: Blind-B, 21-Oct-1997
Gross Beta
Lab Res. 1
Exper. Rng anal
Res. 2 Res. 3 Sigma (R + SR) Average
Normalized deviation
(grand-avg) (known) Tag
XN 100.0
xo
96.4
96.5
2.05
0.099
97.63
-2.95
-3.69 U
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
29.13
X
P
126.67

EB
137.10

QM
45.00
X
M
127.00

QT
137.53

C
51.33
X
FN
127.03

AL
137.57

T
91.63
u
OF
127.30

UY
137.67

NH
97.63
u
XN
127.80

XL
138.10

E
99.93
a
TN
128.00

OS
138.13

HL
101.33
u
SG
128.97

QP
138.23

CE
104.70
u
XJ
129.37

DD
138.60

GZ
106.53

VI
129.67

X
138.67

TY
108.13

MY
130.00

FE
139.00

WE
108.20

BN
130.10

SO
139.27

AR
110.00

CX
130.13

RZ
139.30

WH
111.57

MV
130.33

QZ
139.70

AH
112.53

K
130.43

QU
139.80

DE
114.03

OY
130.50

AW
140.00

LF
115.13

AE
131.00

UA
140.33

BK
117.63

FL
131.33

CS
140.43

JS
118.50

AJ
131.47

U
141.00

JM
118.90

CO
131.67

NK
141.33

Q
120.00

TQ
131.77

OB
142.33

EO
120.63

TD
132.33

Lit
142.40

AF
120.63

I
132.37

QW
142.43

SD
120.80

m
132.57

WR
142.43

KE
121.00

WO
132.67

XM
142.93

BA
121.43

L
133.13

BB
143.37

BS
121.87

LT
133.23

RD
143.53

QQ
122.33

JY
134.00

NJ
143.93

LE
122.53

SR
134.20

JE
143.97

UP
123.33

VO
134.33

AZ
144.00

sx
123.33

SC
134.63

PB
144.00

GQ
123.33

NO
134.97

BM
145.67

D
123.63

SM
135.00

UQ
145.87

BO
123.77

DZ
135.00

SZ
146.20

O
124.17

JN
135.33

WW
147.00

RB
124.27

AU
135.33

PG
147.53

BH
125.00

SI
135.67

W
148.27

CP
125.47

BC
136.30

PM
148.60

SN
125.67

VJ
136.67

DB
148.60

A
126.63

ss
136.67

CJ
150.83

XF
126.63

ED
136.83

AK
151.67

S
• s No data submitted
0 s Insufficient data
TAG SYMBOLS
= Determined to be an outlier
ft = Above control limit
II s Below control limit
-------
ESD-LV Performance Evaluation: Blind-B, 21-Oct-1997
9/44
Gross Beta
Dntn sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
151.67

HK
155.00

KX
166.33

RR
151.70

VT
156.03

QX
169.67

MF
151.60

DT
156.20

RI
175.77

VA
152.67

NA
157.10

CA
179.83

JQ
153.07

LL
162.00

KT
189.17
X
FJ
154.33

RG
163.33

SF
292.33
451.67
X
X
XK
PD
% responding labs
10-
Frequency distribution
*
¦LiMllllm-.
¦¦¦,m m
-T—
-4	-2	i>	+2
Normalized deviation of the mean from the known value
Frequency distribution
-r"
*6
-6
% responding labs
10-
O-lt,-


¦6
-4	-2	0	+2	+4
Normalized deviation of the mean from the grand average
+6
• s No data submitted
0 s Insufficient data
TAG SYMBOLS
x = Determined to be an outlier
ft = Above control limit
JJ. = Below control limit j
-------
— 	=
ESD-LV Performance Evaluation: Blind-B, 21-Oct-1997	10/44
V			___				
Strontium-89	Statistical Summary	182 Participants
The known value of this nuclide is 36.0 pCi/1 with an expected precision of 5.0; the control limits
are 27.3 to 44.7; the warning regions are 27.3 to 30.2 and 41.8 to 44.7
Statistic		Respondents	Non-outliers
Mean
36.04
Grand Avg 35.30
Std. Dev.
7.25
5.91
Variance
52.52
34.98
% Coef. ofVar.
20.11
16.76
% deviation of mean from known value
0.11
-1.95
Norm. dev. of mean from known value
0.01
-0.12
Median
35.83
35.67
% deviation of median from known value
-0.46
-0.93
Norm. dev. of median from known value
-0.02
-0.06
-------
ft
11/44
V
ESD-LV Performance Evaluation: Blind-B, 21-Oct-1997

	^
Stronti um-89








Lab
Res. 1
Res. 2
Res. 3
Exper.
Rng anal

Normalized deviation

Sigma
(R + SR)
Average
(grand-avg)
(known) Tae
A
36.0
37.0
36.0
0.58
0.118
36.33
0.36
0.12

AE
46.0
45.0
45.0
0.58
0.118
45.33
3.48
3.23
ft
AF
37.0
38.0
39.0
1.00
0.236
38.00
0.94
0.69
AH







,*• -
AJ
40.0
41.0
39.0
1.00
0.236
40.00
1.63
1.39

AK
30.0
34.0
34.0
2.31
0.473
32.67
-0.91
-1.15

AL
37.0
40.0
37.0
1.73
0.354
38.00
0.94
0.69

AP








AR








* ,3- *
AU
47.0
45.0
43.0
2.00
0.473
45.00
3.36
3.12
'ft" '
AW
34.0
36.0
36.0
1.15
0.236
35.33
0.01
-0.23

AZ
36.0
35.0
36.0
0.58
0.118
35.67
0.13
-0.12

BA
44.0
43.0
44.0
0.58
0.118
43.67
2.90
2.66

BB









BC
27.0
28.0
30.0
1.53
0.354
28.33
-2.41
-2.66

BG







"v.
' • "v
BH
29.0
31.0
260
2.52
0.591
28.67
-2.30
-2.54

BK








; i? .Tf
V
BL
28.0
33.0
38.0
5.00
1.345
33.00
-0.80
-1.04

BM
40.0
40.0
400
0.00
0.000
40.00
1.63
i-39

BN
•








BO
36.0
37.0
37.0
0.58
0.118
36.67
0.47
0.23

BS








•
BW








•
C
36.0
34.0
32.0
2.00
0.473
34.00
-0.45
-0.69

CA
29.0
30.0
33.0
2.08
0.473
30.67
-1.60
-1.85

CC








• .
GE









CJ
36.0
35.0
37.0
1.00
0.236
36.00
0.24
0.00

CO









CP
28.0
28.0
27.0
0.58
0.118
27.67
-2.64
-2.89

CS
18.0
18.0
20.0
1.15
0.236
18.67
-5.76
-6.00
li
CX
35.0
24.0
31.0
5.57
1.570
30.00
-1.84
-2.08

D
21.0
27.0
30.0
4.58
1.120
26.00
-3.22
-3.46
a
DB








• -
DD
67.0
64.0
58.0
4.58
1.120
63.00
9.60
9.35
X
DE
35.0
36.0
36.0
0.58
0.118
35.67
0.13
-0.12

DI








•
DO
44.0
46.0
42.0
2.00
0.473
44.00
3.01
2.77

DT
34.0
34.0
33.0
0.58
0.118
33.67
-0.57
-0.81

DZ








• -
E
39.0
38.0
42.0
2.08
0.473
39.67
1.51
1.27

EB
42.0
35.0
39.0
3.51
0.827
38.67
1.17
0.92

EL
37.0
34.0
39.0
2.52
0.591
36.67
0.47
0.23

EO

•






•
• =
No data submitted

TAG SYMBOLS

ft = Above control limit
l0 =
Insufficient data
x =
Determined to be an outlier
It = Below control limit
-------
ESD-LV Performance Evaluation: Blind-B, 21-Oct-19&7
12/44
Strontitun-S9








Lab
Res1
Res. 2
Res. 3
Exper.
Sigma
Ang anal
(R + SR)
Average
Normalized deviation
(grand-avg) fknnwn) Tsar
'EHv/
'Btf"








" *.
**J-iA*-
EX








* -
FE
! FF
39.0
40.0
40.0
0.58
0.118
39.67
1.51
1.27

VJ









¦¥Li;(








'?*?
FN-:


















!#?;

46.0
42.0
47.0
2.52
0.591
44.67
3.25
3.00
$&'-? A. "
JS
29.0
31.0
33-0
2.00
0-473
31.00
-1.49
-3.73

JX







;-s
JY
35.0
36.0
36,0
0.58
0.118
35.67
0.13
-0.12

K
37 0
35.0
35.0
1.15
0.236
35.67
O IS
-0.32

EE







:
KT








^ •'"if'-i
EX








< 2;--¥
>•6^-
L
36.0
38.0
37.0
1.00
0.236
37.00
0.59
0.35

UE
B7.0
68.0
30.0
16.46
6.621
58.00
7:86
7 Mi
xk;
LF
42.0
45.0
40.0
2.52
0.591
42.33
2.44
21&

IX








¦•is
LR








. i
LT
29.0
33.0
35.0
3.06
0.709
32.33
-1-03
-1.27

M
33.0
29.0
30.0
2.08
0.473
30.67
-1.60
-1.65

MF








>, C'T 1
. #'¦
MP








* :
MT








•
MV








*
MY








• -
N








. • V
• s No data submitted	TAG SYMBOLS	ft == Above control limit
0 s- Insufficient data	x = Determined to be an outlier	II s Below control limit
-------
13/44	ESD-LV Performance Evaluation: Blind-B, 21-Oct-1997
/	.	" 1	,	,		
Stronti iim.au
Lab
Res. 1
Res. 2
Res. 3
Exper.
Rng anal

Normalized deviation

Sigma
(R + SR)
Average
(grand-avg) (known) Tae
NA •









NH








• »
NJ
30.0
32.0
26.0
3.06
0.709
29.33
-2.07
-2.31

NK







-
NO








^=^etermined^tobean outlier	Below control limit
-------
ESD-LV Performance Evaluation: Blind-B, 21-Oct-1997
14/44
Strontium-89
Lab
Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(erand-avtr) (known) TW
SL-
SM
SN:
33.0
25.0
24.0
4.93
1.120
27.33
-2.76
-3.00

SO









SR








#r •
ss
sx
27.0
24.0
23.0
2.08
0.473
24.67
-3.68
-3.93

sz
42.0
31.0
39.0
5.69
1.570
37.33
0.71
0.46
~K •
¦
T
35.0
36.0
34.0
1.00
0.236
35.00
-0.10
-0.35

TD
34.0
35.0
30.0
2.65
0.591
33.00
-0.80
-1.04

TL







TPf









TQ
37.0
30.0
30.0
4.04
0.827
32.33
-1.03
-1.27
- " ;2rK'
TS







TY









U








ggp
UA








PiE
^J§
UK








UP
46.0
45.0
41.0
2.65
0.591
44.00
3.01
2.77

UQ






nerrw
uv








id*
VA









vc









VH









VI
27.0
25.0
27.0
1.15
0.236
26.33
-3.11
-3.35

VJ








VM









VO
34.0
34.0
40.0
3.46
0.709
36.00
0.24
0.00

VT




. ^


US
W
35.0
36.0
36.0
0.58
0.118
35.67
0.13
-0.12

WE









WH








: j.
WO








'
WR









WW








\ >.5.
X
38.0
36.0
37.0
1.00
0.236
37.00
0.59
0.35

XA








'<£ ''•* V
XC









XD








.1* s* ^
XF









XI









XJ








.•
XK
24.0
16.0
29.0
6.56
2.020
23.00
-4.26
-4.50
u
XL
45.0
47.0
49.0
2.00
0.473
47.00
4.05
3.81
tr
XM
46.0
42.0
44.0
2.00
0.473
44.00
3.01
2.77

• s No data submitted
0 = Insufficient data
TAG SYMBOLS
x s Determined to be an outlier
11 s Above control limit
U = Below control limit
-------
(r
15/44
ESD-LV Performance Evaluation: Blind-B, 21-Oct-1997
Strontium-89
Lab Res. 1
Res. 2
Res. 3
Exper. Rng anal	Normalized deviation
Sigma (R -f SR) Average (grand-avg) (known) Tag
XN
XO
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
18.67
U
CS
33.00

TD
38.00

AL
23.00

XK
33.00

BL
38.00

AF
24.67
u
ss
33.67

DT
38.33

QU
26.00
a
D
34.00

C
38.67

EB
26.33
u
VI
34.67

HK
39.00

Q
26.67

SD
35.00

T
39.67

FE
27.33

SM
35.33

AW
39.67

E
27.67

CP
35.67

W
40.00

PB
28.33

BC
35.67

K
40.00

BM
28.67

BH
35.67

JY
40.00

AJ
29.33

NJ
35.67

DE
42.00

I
30.00

SC
35.67

AZ
42.33

LF
30.00

cx
36.00

VO
43.67

BA
30.67

M
36.00

S
44.00

XM
30.67

CA
36.00

QZ
44.00

UP
31.00

JS
36.00

CJ
44.00

QW
32.00

SI
36.33

A
44.00

DO
32.33

TQ
36.67

QM
44.67

GQ
32.33

LT
36.67

EL
45.00
It
AU
32.67

SF
36.67

BO
45.33
It
AE
32.67

JE
37.00

X
47.00
ft
XL
32.67

AK
37.00

L
58.00
X
LE



37.33

SZ
63.00
X
DD
responding labs
Frequency distribution
10-
¦ J
|1 Jf¦¦JflliMfii V» .t
-6
-4	-2	0	*2
Normalized deviation of the mean from the known value
+6
• = No data submitted TAG SYMBOLS ft = Above control limit
0 — Insufficient data	x = Determined to be an outlier	U = Below control limit l
-------
ESD-LV Performance Evaluation: Blind-B, 21-Oct-1997	16/44
Strontium-89
% responding labs	Frequency distribution
TO-			
1 , B
¦¦¦¦	¦¦ByBBBMy B ^ B -y-1
-2	0	+2
-4	*2	D	+2	+4	+6
Normalized deviation of the mean from the grand average
-------
ESD-LV Performance Evaluation: Blind-B, 21-Oct-1997
17/44
Strontium-90
Statistical Stunmaiy	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	j
109(59.9 %) Failed to respond
1 (0.5 %) Outliers
3( 1.6 %) Out of control
but not an outlier
Statistic
. 64(35.2 %) Within all limits
Respondents
** 5(2.7 %) In warning zone
but within control
Non-outliers
Mean
21.85
Grand Avg 21.53
Std. Dev.
4.30
3.29
Variance
18.47
10.86
% Coef. of Var.
19.67
15.31
% deviation of mean from known value
-0.66
-2.15
Norm. dev. of mean from known value
-0.03
-0.14
Median
21.33
21.17
% deviation of median from known value
-3.03
-3.79
Norm. dev. of median from known value
-0.16
-0.25
4(5.5 %) More than 3 norm. S.D. *
5(6.8 %) Between 2 and 3 norm
• 54(74.0 %) Within 1 norm. S.D.
of known value
so-^tnr
10(13.7 %) Between 1 and 2 norm. S.D.
-------
18/44	ESD-LV Performance Evaluation: Blind-B, 21-Oct-1997
Stronti um-90
Lab
Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tae
A
20.0
20.0
21.0
0.58
0.118
20.33
-0.41
-0.58
AE
23.0
23.0
25.0
1.15
0.236
23.67
0.74
0.58
AF
21.0
21.0
22.0
0.58
0.118
21.33
-0.07
-0.23
AH







AJ
17.0
17.0
19.0
1.15
0.236
17.67
-1.34
W '
-1.50
AK
19.0
20.0
20.0
0.58
0.118
19.67
-0.64
-0.81
AL
190
20.0
19.0
0.58
0.118
19.33
-0.76
-0.92
AP







• ^s'
AR








AU
21.0
22.0
19.0
1.53
0.354
20.67
-0.30
-0.46
AW
24.0
25.0
26.0
1.00
0.236
25.00
1.20
1.04
AZ
23.0
23.0
23.0
0.00
0.000
23.00
0.51
0.35
BA
19.0
20.0
19.0
0.58
0.118
19.33
-0.76
-0.92
BB
21.0
22.0
22.0
0.58
0.118
21.67
0.05
-0.12
BC
22.0
21.0
21.0
0.58
0.118
21.33
-0.07
-0.23
BO








BH
22.0
23.0
24.0
1.00
0.236
23.00
0.51
0.35
BK







	F . «-«v
BL
25.0
24.0
22.0
1.53
0.354
23.67
0.74
0.58
BM
20.0
20.0
21.0
0.58
0.118
20.33
-0.41
-0.58
BN








BO
21.0
22.0
20.0
1.00
0.236
21.00
-0.18
-0.35
BS







- •,
BW








C
20.0
23.0
21.0
1.53
0.354
21.33
-0.07
-0.23
CA
19.0
210
20.0
1.00
0.236
20.00
-0.53
-0.69
CC







x •'
CE
22.0
22.0
21.0
0.58
0.118
21.67
0.05
-0.12
CJ
24.0
21.0
20.0
2.08
0.473
21.67
0.05
-0.12
CO
19.0
18.0
19.0
0.58
0.118
18.67
-0.99
-1.15
CP
30.0
28.0
26.0
2.00
0.473
28.00
2.24
2.08
CS
31.0
29.0
30.0
1.00
0.236
30.00
2.93
2.77
CX
12.0
18.0
18.0
3.46
0.709
16.00
-1.91
-2.08
D
23.0
23.0
24.0
0.58
0.118
23.33
063
0.46
DB







• -
DD
46.0
44.0
46.0
1.15
0.236
45.33
8.25
8.08 x
DE
24.0
24.0
25.0
0.58
0.118
24.33
0.97
081
DI








DO
20.0
21.0
22.0
1.00
0.236
21.00
-0.18
-0.35
DT
23.0
21.0
21.0
1.15
0.236
21.67
0.05
-0.12
DZ
25.0
25.0
27.0
1.15
0.236
25.67
1.43
1.27
E
23.0
22.0
22.0
0.58
0.118
22.33
0.28
0.12
EB
19.0
21.0
20.0
1.00
0.236
20.00
-0.53
-0.69
EL
22.0
20.0
20.0
1.15
0.236
20.67
-0.30
-0.46
EO







•
• =
No data submitted

TAG SYMBOLS

It s Above control limit
0 = Insufficient data	x = Determined to be an outlier	= Below control limit
-------
ft
ESD-LV Performance Evaluation: Blind-B, 21-Oct-1997	19/44
Strontium-90








Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation

Res. 3
Sigma
(R + SR)
Average
(grand-avg) (known) Tajr
ER-;









EVvr








rT *•
EX








gar
FE
25.0
26.0
23.0
1.53
0.354
24.67
1.09
0.92

:FPV:








3TTV







































,5', Ks
GQ
18.0
18.0
18.0
0.00
0.000
18.00
-1.22
-1.39









,V!7ZF*










HK
20.0
22.0
21.0
1.00
0.236
21.00
-0.18
-0.35

HL»









HP









HX








j§§i|
I
19.0
20.0
20.0
0.58
0.118
19.67
-0.64
-0.81

W.








|||
inra








jjgl
-VJ:-'.:








JSP
JE
23.0
25.0
26.0
1.53
0.354
24.67
1.09
0.92

JQ









JMT








m
JN








- Vfe
0$
JQ









JS
24.0
22.0
23.0
1.00
0.236
23.00
0.51
0.35

JX









JY
22.0
21.0
20.0
1.00
0.236
21.00
-0.18
-0.35

K
21.0
20.0
21.0
0.58
0.118
20.67
-0.30
-0.46

KE









KT









KX









L
21.0
22.0
22.0
0.58
0.118
21.67
0.05
-0.12

LE
11.0
13.0
15.0
2.00
0.473
13.00
-2.95
-3.12

LF
270
23.0
23.0
2.31
0.473
24.33
0.97
0.81

LL


















LR








W>,'
LT
33.0
28.0
26.0
3.61
0.827
29.00
2.59
2.42

M
23.0
25.0
26.0
1.53
0.354
24.67
1.09
0.92

MF









MP









MT









MV








• ¦
MY








" • ¦.
N









• S
No data submitted

TAG SYMBOLS

ft 3 Above control limit
[§~
ill
Insufficient data
X s
Determined to be an outlier
Jj = Below control limit
-------
20/44
ESD-LV Performance Evaluation: Blind-B, 21-Oct-1997
Strontium-90
Lnb
Res. 1
Res. 2
Res. 3
Exper.
Rng anal

Normalized deviation

Sigma
(R + SR)
Average
(grand-avg) (known) Tae
NA. .
NH









NJ
19.0
21.0
18.0
1.53
0.354
19.33
-0.76
-0.92
V *.
NK







NO









O








i*T <
OB









OF.;








^
^ r •
OM








*-¦ j-"-
OS








fp§4
OX









OY









p









PA








Wm
PB
24.0
25.0
24.0
0.58
0.118
24.33
0.97
0.81

PD









PG









PM ;









PQ








Ifp
PW









Q
24.0
24.0
24.0
0.00
0.000
24.00
0 86
0.69

QM
13.0
13.0
13.0
0.00
0.000
13.00
-2.95
-3.12
J. .
QP









QQ








• •>
QT








.*T:
QU
20.0
20.0
19.0
0.58
0.118
19.67
-0.64
-0.81

QW
19.0
19.0
18.0
0.58
0.118
18.67
-0.99
-1.15

QX









QZ
20.0
20.0
20.0
0.00
0.000
20.00
-0.53
-0.69

RB








• ">
RD








- • * "z
RF








} • :
RG








V-
RI








• * 'a
RK








-
;¦*<:/
RP








.•"-a:
RR








'¦*K
RU








•••«
t '.sc>
RZ








, ~. :
S
19.0
20.0
20.0
0.58
0.118
19.67
-0.64
-0.81

sc
23.0
24.0
23.0
0.58
0.118
23.33
0.63
0.46

SD
24.0
24.0
24.0
0.00
0.000
24.00
0.86
0.69

SF
21.0
23.0
19.0
2.00
0.473
21.00
-0.18
-0.35

SG





-


*
SI
20.0
20.0
21.0
0.58
0.118
20.33
-0.41
-0.58


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

-------
ESD-LV Performance Evaluation: Blind-B, 21-Oct-1997
i	~ ~	¦	_
Stronti um-90
Lab
Res. 1
Res. 2
Res. 3
Exper.
Rng anal

Normalized deviation

Sigma
(R + SR)
Average
(grand-avir) (known}
Tag
,SL>







			
m i
19.0
17.0
14.0
2.52
0.591
16.67
-1.68
-1.85

SN . -







80









8R








" i
SS
23.0
25.0
24.0
1.00
0.236
24.00
0.86
0.69
i
' SK:/'








sz
20.0
26.0
22.0
3.06
0.709
22.67
0.39
0.23

T
19.0
20.0
18.0
1.00
0.236
19.00
-0.88
-1.04

TD
19.0
24.0
22.0
2.52
0.591
21.67
0.05
-0.12

TL' .






r
tn;;








fsC-
TQ
200
20.0
20.0
0.00
0.000
20.00
-0.53
-0.69









5*^--
SY









,:UM








^l|









Ipi
XtJKJ








Mm
UP
28.0
28.0
29.0
0.58
0.118
28.33
2.36
2.19
.. rm
UQ







iS
UY









VA








*
VC








v
VH








rf§P
VI
11.0
12.0
13.0
1.00
0.236
12.00
-3.30
-3.46
L.
VJ









VM









VO
22.0
20.0
18.0
2.00
0.473
20.00
-0.53
-0.69

VT









W
22.0
20.0
21.0
100
0.236
21.00
-0.18
-0.35
1
I
WE








...
WH








•< V
WO








• ^
WR
25.0
25.0
26.0
0.58
0.118
25.33
1.32
1.15

WW


.





H# -
X
22.0
20.0
20.0
1.15
0.236
20.67
-0.30
-0.46

XA








, •>* *
xc








| V.'O'
XD








¦ d#-K-
XF









XI








>•
XJ








¦
XK
26.0
26.0
27.0
0.58
0.118
26.33
1.66
1.50

XL
19.0
20.0
21.0
1.00
0.236
20.00
-0.53
-0.69
.
XM
23.0
22.0
22.0
0.58
0.118
22.33
0.26
0.12

• = No data submitted	TAG SYMBOLS	tf s Above control limit
0 s Insufficient data	x = Determined to be an outlier	a Below control limit
-------
22/44
ESD-LV Performance Evaluation: Blind-B, 21-Oct-1997
Strontium-90
Lab Res. 1
Res. 2
Res. 3
Exper. Rng anal	Normalized deviation
Sigma (R + SR) Average (grand-avg) (known) Tag
XN:
XO
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
12.00
a
VI
20.33

BM
23.00

JS
13.00
ji
QM
20.33

A
23.00

BH
13.00

LE
20.67

X
23.00

AZ
16.00

CX
20.67

K
23.33

SC
16.67

SM
20.67

EL
23.33

D
17.67

AJ
20.67

AU
23.67

BL
18.00

GQ
21.00

W
23.67

AE
18.67

QW
21.00

SF
24.00

ss
18.67

CO
21.00

JY
24.00

SD
19.00

T
21.00

HK
24.00

Q
19.33

NJ
21.00

DO
24.33

PB
19.33

BA
21.00

BO
24.33

LF
19.33

AL
21.33

C
24.33

DE
19.67

S
21.33

BC
24.67

M
19.67

QU
21.33

AF
24.67

JE
19.67

I
21.67

TD
24.67

FE
19.67

AK
21.67

L
25.00

AW
20.00

XL
21.67

DT
25.33

WR
20.00

VO
21.67

CJ
25.67

DZ
20.00

TQ
21.67

CE
26.33

XK
20.00

QZ
21.67

BB
28.00

CP
20.00

EB
22.33

XM
28.33

UP
20.00

CA
22.33

E
29.00

LT
20.33

SI
22.67

SZ
30.00
45.33
X
CS
DD
% responding labs
Frequency distribution
JO-
-r-
-6
jA



^ -2 ' 2T	+2
Normalized deviation of the mean from the known value
T~
+4
—r
+6
&
• = No data submitted	TAG SYMBOLS	It = Above control limit
0 = Insufficient data	^x^=^Determined^to^be^nout^	li_^_Belowcontrol_l^dt_J
-------
ESD-LV Performance Evaluation: Blind-B, 21-Oct-1997
23/44
Strontium-90
% responding labs		Frequency distribution
10-
ill...
	,	,		f ¦¦¦flBUllBllfBlB	, ¦¦¦ ¦ 					_B
-6	-4	-2	0	+2	+4	-f6
Normalized deviation of the mean from the grand average
-------
<5=
ESD-LV Performance Evaluation: Blind-B, 21-Oct-l&97
24/44
Cobalt-60	Statistical Summary	182 Participants
The known value of this nuclide Is 10.0 pCi/1 with an expected precision of 6.0; the control limits
are 1.3 to 18.7; the warning regions are 1.3 to 4.2 and 15v8 to 18.7
72(39.6 %} Failed to respond ,
1 (<3.5 %> Outllors
4 108(59.3 %) Within all tlmtts
1 (0.5 %) In warning zone
but wlthtn control
Statistic
Respondents
Non-outliers
Mean
10.55
Grand Avg 10,46
Std. Dev.
2.03
1.81
Variance
4.13
3.28
% Coef. ofVar.
19.26
17.30
% deviation of mean from known value
5.65
4.65
Norm. dev. of mean from known value
0.27
0.26
Median
10.00
10.00
% deviation of median from known value
0.00
0.00
Norm. dev. of median from known value
0.00
0.00
1(0.9 %) Morft than 3 norm. S.D. »»„
, 93(84.5 %) WltMfi 1 norm. S.D.
f
f	of known vatu«
-------
	
25/44
ESD-LV Performance Evaluation: Blind-B, 21-Oct-1997

	^
Cobalt-60







	1
Lab
Res. 1
Res. 2
Res. 3
Exper.
Rng anal

Normalized deviation

Sigma
(R + SR)
Average
(grand-avg) - (known) Tae
A
8.0
9.0
10.0
1.00
0.236
9.00
-0.51
-0.35

AE
11.0
12.0
10.0
1.00
0.236
11.00
0.19
0.35

AF
10.0
10.0
10.0
0.00
0.000
10.00
-0.16
0.00

AH
9.0
8.0
10.0
1.00
0.236
9.00
-0.51
-0.35

AJ
12.0
14.0
13.0
1.00
0.236
13.00
0.88
1.04

AK
11.0
11.0
10.0
0.58
0.118
10.67
0.07
0.23

AL
14.0
12.0
16.0
2.00
0.473
14.00
1.22
1.39

AP









AR








7M
AU
9.0
9.0
8.0
0.58
0.118
8.67
-0.62
-0.46

AW
12.0
11.0
11.0
0.58
0.118
11.33
0.30
0.46

AZ
9.0
10.0
9.0
0.58
0.118
9.33
-0.39
-0.23

BA
14.0
12.0
13.0
1.00
0.236
13.00
0.88
1.04

BB
10.0
9.0
9.0
0.58
0.118
9.33
-0.39
-0.23

BC
10.0
9.0
10.0
0.58
0.118
9.67
-0.28
-0.12

BG








¦•3#!
BH
11.0
11.0
12.0
0.58
0.118
11.33
0.30
0.46

BK
10.0
10.0
10.0
0.00
0.000
10.00
-0.16
0.00

BL
10.0
10.0
10.0
0.00
0.000
10.00
-0.16
0.00

BM
11.0
10.0
10.0
0.58
0.118
10.33
-0.05
0.12

BN
10.0
11.0
11.0
0.58
0.118
10.67
0.07
0.23

BO
10.0
12.0
100
1.15
0.236
10.67
0.07
0.23

BS









BW








-• 4a
C
10.0
11.0
10.0
0.58
0.118
10.33
-0.05
0.12

CA
11.0
10.0
9.0
100
0.236
10.00
-0.16
0.00

CC









CE
12.0
12.0
8.0
2.31
0.473
10.67
0.07
0.23

CJ
10.0
11.0
11.0
0.58
0.118
10.67
0.07
0.23

CO
13.0
13.0
14.0
0.58
0.118
13.33
0.99
1.15

CP
12.0
10.0
12.0
1.15
0.236
11.33
0.30
0.46

CS
11.0
13.0
11.0
1.15
0.236
11.67
0.42
0.58

CX
12.0
13.0
10.0
1.53
0.354
11.67
0.42
0.58

D
10.0
10.0
10.0
0.00
0.000
10.00
-0.16
0.00

DB









DD
20.0
21.0
20.0
0.58
0.118
20.33
3.42
3.58:
x">-
DE
10.0
10.0
10.0
0.00
0.000
10.00
-0.16
0.00

DI









DO
11.0
10.0
11.0
0.58
0.118
10.67
0.07
0.23

DT
10.0
12.0
8.0
2.00
0.473
10.00
-0.16
0.00

DZ








'\9
E
9.0
10.0
10.0
0.58
0.118
9.67
-0.28
-0.12

EB
9.0
10.0
9.0
0.58
0.118
9.33
-0.39
-0.23

EL
9.0
9.0
9.0
0.00
0.000
9.00
-0.5 i
-0.35

EO







< . .
% • s'
• =
No .data submitted

TAG SYMBOLS

IT = Above control limit
IL0 -
Insufficient data
x =
Determined to be an outlier
h Below control limit
-------
Cobalt-60
Lab Res. 1
er :
EVP-
EX"
FE
:FE>
FJ
FL
:fn1
90
11.0
10.0
ESD-LV Performance Evaluation: Blind-B, 21-Oct-1997
26/44
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Normalized deviation
Average (grand-avg) (known) Tag
5.0
11.0
11.0
7.0
11.0
10.0
2.00
0.00
0.58
0.473
0.000
0.118
7.00
11.00
10.33
-1.20
0.19
-0.05
-1.04
0.35
0.12


GQ
G*
+•? * is
10.0
10.0
10.0
0.00
0.000
10.00
-0.16
0.00
;
¦HP








HK
10.0
10.0
10.0
0.00
0.000
10.00
-0.16
0.00

HL
11.0
12.0
12.0
0.58
0.118
11.67
0.42
0.58

::HP;








HXs








81
I
9.0
11.0
9.0
1.15
0.236
9.67
-0.28
-0.12

ID








HI
IU
5.0
5.0
5.0
0.00
0.000
5.00
-1.89
-1.73










m
JE
10.0
10.0
11.0
0.58
0.118
10.33
-0.05
0.12
,
JG
10.0
11.0
12.0
1.00
0.236
11.00
0.19
0.35

JM
10.0
12.0
9.0
1.53
0.354
10.33
-0.05
0.12

JN.









«JQ









JS
10.0
9.0
10.0
0.58
0.118
9.67
-0.28
-0.12

JX









JY
10.0
10.0
10.0
0.00
0.000
10.00
-0.16
0.00

K
9.0
9.0
9.0
0.00
0.000
9.00
-0.51
-0.35

KE









KT









KX
12.0
12.0
11.0
0.58
0.118
11.67
0.42
0.58

L
12.0
10.0
10.0
1.15
0.236
10.67
0.07
0.23

LE
14.0
13.0
12.0
1.00
0.236
13.00
0.88
1.04

LF
10.0
15.0
11.0
2.65
0.591
12.00
0.53
0.69

LL









LR
9.0
9.0
10.0
0.58
0.118
9.33
-0.39
-0.23

LT
10.0
10.0
10.0
0.00
0.000
10.00
-0.16
0.00

M
9.0
9.0
10.0
0.58
0.118
9.33
-0.39
-0.23

MF








• V
MP
10.0
11.0
11.0
0.58
0.118
10.67
0.07
0.23

MT








" • '
MV
8.0
7.0
8.0
0.58
0.118
7.67
-0.97
-0.81

MY
9.0
10.0
10.0
0.58
0.118
9.67
-0.28
-0.12

N








•
• S
No data submitted

TAG SYMBOLS

ft = Above control limit
0 s
^	
Insufficient data
X S3
Determined to be an outlier

s Below control limit ,
-------
! 27/44
ESD-LV Performance Evaluation: Blind-B, 21-Oct-1997

	"fl
Cobalt-60








Lab
Res. 1
Res. 2
Ree. 3
Exper.
Rng anal

Normalized deviation

Sigma
(R + SR)
Average
(grand-Rvg) {known) Tee
.NA







- .. .

NH
9.0
9.0
9.0
0.00
0.000
9.00
-0.51
-0.35

NJ
9.0
9.0
10.0
0.58
0.118
9.33
-0.39
-0.23

NK
8.0
8.0
7.0
0.58
0.118
7.67
-0.97
-0.81

NO
15.0
18.0
20.0
2.52
0.591
17.67
2.49
2.66

0
13.0
11.0
11.0
1.15
0.236
11.67
0.42
0.58

OB
10.0
10.0
10.0
0.00
0.000
10.00
-0.16
0.00

OF








OM
9.0
9.0
8.0
0.58
0.118
8.67
-0.62
-0.46

08






v '3< *V*
OX
¦¦¦








OY








— Vijr
>
P
8.0
13.0
15.0
3.61
0.827
12.00
0.53
0.69

PA








¦ • k -
PB
10.0
10.0
10.0
0.00
0.000
10.00
.0.16
0.00

PD
10.0
11.0
9.0
1.00
0.236
10.00
-0.16
0.00

PG









PM
14.0
17.0
10.0
3.51
0.827
13.67
1.11
1.27

PQ








""V*-v"'-"
PW
9.0
10.0
10.0
0.58
0.118
9.67
-0.28
-0.12

Q
12.0
7.0
9.0
2.52
0.591
9.33
-0.39
-0.23

QM
14.0
15.0
12.0
1.53
0.354
13,67
1.11
1.27

QP
10.0
10.0
9.0
0.58
0.118
9.67
-0.28
-0.12

QQ








- *V,
QT
10.0
10.0
9.0
0.58
0118
9.67
-0.28
-0.12

QU
10.0
11.0
12.0
1.00
0.236
11.00
0.19
0.35

QW
12.0
11.0
12.0
0.58
0.118
11.67
0.42
0.58

QX
12.0
15.0
13.0
1.53
0.354
13.33
0.99
1.15

QZ
10.0
10.0
11.0
0.58
0.118
10.33
-0.05
0.12

RB








4 -
RD








• ^
RF








ft
RG








. ft
RI








' , <¦
RK








ft.
HP








ft '
RR








ft. '
RU








s*'-*
RZ
7.0
7.0
5.0
1.15
0.236
6.33
-1.43
-1.27

S
8.0
9.0
9.0
0.58
0.118
8.67
-0.62
-0.46

sc
9.0
10.0
10.0
0.58
0.118
9.67
-0.28
-0.12

SD
8.0
9.0
9.0
0.58
0.118
8.67
-0.62
-0.46

SF
11.0
11.0
13.0
1.15
0.236
11.67
0.42
0.58

SG








•
SI
12.0
11.0
10.0
1.00
0.236
11.00
0.19
0.35

• 5
No data submitted

TAG SYMBOLS

ft = Above control limit
[z.
Insufficient data
X s
Determined to be an outlier
It = Below control limit
-------
ESD-LV Performance Evaluation: Blind-B, 21-Oct-1997
28/44
Cobalt-60
Lab
Res. 1
Res. 2
Res. 3
Exper.
Rng anal

Normalized deviation

Sigma
(R + SR)
Average
(grand-avg)
(known) Tntr
SL




• "¦ *"•




SM
10.0
13.0
11.0
1.53
0.354
11.33
0.30
0.46
•
SN
9.0
8.0
9.0
0.58
0.118
8.67
-0.62
-0.46

SO







r-i
SR
12.0
14.0
12.0
1.15
0.236
12.67
0.76
0.92

SS
11.0
10.0
9.0
1.00
0.236
10.00
-0.16
0.00

sx
10.0
10.0
10.0
0.00
0.000
10.00
-0.16
0.00

SZ
10.0
9.0
11.0
1.00
0.236
10.00
-0.16
0.00

T
8.0
8.0
10.0
1.15
0.236
8.67
-0.62
-0.46

TD
14.0
12.0
14.0
1.15
0.236
13.33
0.99
1.15

¦TLr









TN








TQ
8.0
9.0
9.0
0.58
0.118
8.67
-0.62
-0.46

TS









TY








~i
u








if
wM
"VA-









UK
17.0
16.0
13.0
2.08
0.473
15.33
1.69
1.85

UP
10.0
11.0
11.0
0.58
0.118
10.67
0.07
0.23

UQ








M
UY
12.0
12.0
11.0
0.58
0.118
11.67
0.42
0.58
VA
15.0
12.0
14.0
1.53
0.354
13.67
1.11
1.27

VC
9.0
10.0
10.0
0.58
0.118
9.67
-0.28
-0.12

VH









VI
7.0
8.0
9.0
1.00
0.236
8.00
-0.85
-0.69

VJ








"
VM









vo
9.0
11.0
150
3.06
0.709
11.67
0.42
0.58

VT
11.0
11.0
10.0
0.58
0.118
10.67
0.07
0.23

W
9.0
12.0
8.0
2.08
0.473
9.67
-0.28
-0.12

WE









WH









WO
11.0
11.0
10.0
0.58
0.118
10.67
0.07
0.23

WR
10.0
10.0
11.0
0.58
0.118
10.33
-0.05
0.12

WW
9.0
9.0
8.0
0.58
0.118
8.67
-0.62
-0.46

X
18.0
15.0
13.0
2.52
0.591
15.33
1.69
1.85

XA
9.0
10.0
10.0
0.58
0.118
9.67
-0.28
-°12

XC









XD








¦A \ -< j
XF
10.0
10.0
11.0
0.58
0.118
10.33
-0.05
0.12

XI









XJ








'
XK
8.0
10.0
9.0
1.00
0.236
9.00
-0.51
-0.35

XL








-•''Vj
XM









• • = No data submitted	TAG SYMBOLS	ff = Above control limit
0 = Insufficient data	x = Determined to be an outlier	W s Below control limit
-------
29/44
ESD-LV Performance Evaluation: Blind-B, 21-Oct-I96T
Cobalt-60
Lab Res. 1
Res. 2 Bee. 3
Exper. Rng anal	Normalized deviation
Sigma (R + SR> Average (grand-avg) Qpiowa) Tag
SN;
XO
Data sorted by Laboratory Average

Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
5.00

IU
9.67

I
10.67

BN
6.33

RZ
9.67

£
10,67

AK
7.00

F£
9.67

BC
11.00

SI
7.67

NK
10.00

sz
11.00

QU
7.67

MV
10.00

sx
11.00

JG
8.00

VI
10.00

ss
11.00

PJ
8.67

WW
10.00

PD
11.00

AE
8.67

TQ
10.00

PB
1133

SM
8.67

T
10.00

OB
11.33

CP
S.67

SN
10.00

LT
11.33

BH
8.67

SD
10.00

JY
11.33

AW
8.67

S
10.00

HK
11.67

VO
8.67

OM
10.00

GQ
11.67

UY
8.67

AU
10.00

DT
11.67

SF
9.00

XX
10.00

DE
11.67

QW
9.00

NH
10.00

D
11.67

O
9.00

K
10.00

CA
11.67

KX
9.00

EL
10.00

BL
11.67

HL
9.00

AH
10.00

Bit
11.67

CX
9.00

A
10.00

AF
11.67

CS
9.33

Q
10.33

XF
12.00

P
9.33

M
10.33

WR
12.00

LF
9.33

M
10 33

QZ
12. &7

SR
9,33

LR
10.33

JM
13 00

LE
9.33

EB
10.33

JE
13.00

BA
9.33

BB
10.33

FL
13.00

AJ
9.33

AZ
10.33

C
13.33

TD
9.67

XA
10.33

BM
13.33

QX
9.67

W
10-67

WO
13.33

CO
9.67

VC
10.67

VT
13.67

VA
9.67

sc
10.67

UP
13.67

QM
9.67

QT
10.67

MP
13.67

PM
9.67

QP
10.67

L
14.00

AL
9.67

PW
10.67

DO
1533

X
9.67

MY
10.67

CJ
15.33

UK
9.67

JS
10.67

CE
17.67

NO



10.67

BO
20.33
X
BD
• s No data submitted
) 0 s Insufficient data
TAG SYMBOLS
x s Determined to be an outlier
ft = Above control limit
U = Below control limit
-------
ESD-LV Performance Evaluation: BILnd-B, 21-Oct-1997
30/44
CobaJt-60
% responding laba
Frequency distribution
)0>

I ¦ wy—¦w—y—JL M
-4	-2	6	+2	+4
Normalized deviation of the mean from the known value
~r
—r-
~4
% responding laba
Frequency distribution





¦	
			1.
Il			
		1.
11	 	

iHiaifl ¦ ¦ ¦ i ¦	¦	¦	r-J
Normalized deviation of the mean from the grand average
			 -=&
^ - ¦ ¦	-	11 1 -	¦¦	-
-------
ESD-LV Performance Evaluation: Blind-B, 21-Oct-1997	31/44
Cesium-134	Statistical Summary	182 Participants
The known value of this nuclide is 41.0 pCi/1 with an expected precision of 5.0; the control limits
are 32.3 to 49.7; the warning regions are 32.3 to 35.2 and 46.8 to 49.7
Statistic		Respondents	N on-outliers
Mean
37.67
Grand Avg 37.83
Std. Dev.
5.95
2.87
Variance
35.40
8.23
% Coef. of Var.
15.79
7.58
% deviation of mean from known value
-8.12
-7.73
Norm. dev. of mean from known value
-0.56
-1.10
Median
37.50
37.67
% deviation of median from known value
-8.54
-8.13
Norm. dev. of median from known value
-0.59
-1.16
-------
A
32/44
ESD-LV Performance Evaluation: Blind-B, 21-Oct-1997

	^
Cesium-134







	-V
Lab
Res. 1
Res. 2
Res. 3
Exper.
Rng anal

Normalized deviation

Sigma
(R + SR)
Average
(grand-avg)
(known) Tae
A
40.0
41.0
40.0
0.58
0.118
40.33
0.87
-0.23

AE
41.0
38.0
40.0
1.53
0.354
39.67
0.64
-0.46

AF
41.0
39.0
40.0
1.00
0.236
40.00
0.75
-0.35

AH
35.0
38.0
39.0
2.08
0.473
37.33
-0.17
-1.27

AJ
33.0
36.0
33.0
1.73
0.354
34.00
-1.33
-2.42

AK
36.0
35.0
36.0
0.58
0.118
35.67
-0.75
-1.85

AL
54.0
47.0
45.0
4.73
1.120
48.67
3.75
2.66

AP








AR








•s
AU
35.0
36.0
36.0
0.58
0.118
35.67
-0.75
-1.85

AW
37.0
39.0
38.0
1.00
0.236
38.00
0.06
-1.04

AZ
41.0
40.0
41.0
0.58
0.118
40.67
0.98
-0.12

BA
38.0
39.0
38.0
0.58
0.118
38.33
0.17
-0.92

BB
38.0
39.0
41.0
1.53
0.354
39.33
0.52
-0.58

BC
37.0
37.0
36.0
0.58
0.118
36.67
-0.40
-1.50

BO









BH
42.0
42.0
40.0
1.15
0.236
41.33
1.21
0.12

BK
36.0
36.0
36.0
0.00
0.000
36.00
-0.63
-1.73

BL
41.0
39.0
37.0
2.00
0.473
39.00
0.41
-0.69

BM
39.0
38.0
40.0
1.00
0.236
39.00
0.41
-0.69

BN
38.0
37.0
38.0
0.58
0.118
37.67
-0.06
-1.15

BO
44.0
43.0
44.0
0.58
0118
43.67
2.02
0.92

BS








• J1
BW









C
42.0
41.0
42.0
0.58
0.118
41.67
1.33
0.23

CA
36.0
37.0
39.0
1.53
0.354
37.33
-0.17
-1.27

CC








AW"*
CE
39.0
39.0
38.0
0.58
0.118
38.67
0.29
-0.81

CJ
42.0
41.0
41.0
0.58
0.118
41.33
1.21
0.12

CO
38.0
38.0
40.0
1.15
0.236
38.67
0.29
-0.81

CP
40.0
40.0
36.0
2.31
0.473
38.67
0.29
-0.81

CS
38.0
39.0
38.0
0.58
0.118
38.33
0.17
-0.92

CX
39.0
35.0
41.0
3.06
0.709
38.33
0.17
-0.92

D
37.0
36.0
36.0
0.58
0118
36.33
-0.52
-1.62

DB








" • K
DD
79.0
79-0
80.0
0.58
0.118
79.33
14.38
13.28

DE
36.0
37.0
37.0
0.58
0.118
36.67
-0.40
-1.50

DI









DO
39.0
40.0
40.0
0.58
0.118
39.67
0.64
-0.46

DT
36.0
34.0
36.0
1.15
0.236
35.33
-0.86
-1.96

DZ








•
E
38.0
40.0
37.0
1.53
0.354
38.33
0.17
-0.92

EB
33.0
32.0
33.0
0.58
0.118
32.67
-1.79
-2.89

EL
40.0
38.0
40.0
1.15
0.236
39.33
0.52
-0.58

EO









• =
No data submitted

TAG SYMBOLS

ft = Above control limit
0 =
V	
Insufficient data
X EE
Determined to be an outlier
•11 ee Below control limit J
-------
\	ESD-LV Performance Evaluation: Blind-B, 21-Oct-19»7	33/44
I					
Cesium-134
Lab
Res. 1
Res. 2
Res. 3
Exper.
Rng anal

Normalized deviation

Sigma
(R + SR)
Average
(grand-avg) (known) Tag
ER








¦	
EV









EX









FE
39.0
31.0
31.0
4.62
0.945
33.67
-1.44
-2.54

FP







il \
FJ
36.0
36.0
36.0
0.00
0.000
36.00
-0.63
-1.73

FL
36.0
38.0
39.0
1.53
0.354
37.67
-0.06
-1.15

FN








CIL









GQ
40.0
40.0
40.0
0.00
0.000
40.00
0.75
-0.35

GZ







¦i
•V'
m
38.0
33.0
33.0
2.89
0.591
34.67
-1.10
-2.19

HK
38.0
39.0
38.0
0.58
0.118
38.33
0.17
-0.92

HL
37.0
40.0
38.0
1.53
0.354
38.33
0.17
-0.92

HP









hx;








.Jafi
i
37.0
37.0
37.0
0.00
0.000
37.00
-0.29
-1.39

ID
IU
Jf"
20.0-
Ife
•20.0
^00
10:000 if
IjHMX*

?*#i2ti
:m
SI
JE
40.0
37.0
40.0
1.73
0.354
39.00
0.41
-0.69

JG
41.0
42.0
43.0
1.00
0.236
42.00
1.44
0.35

JM
38.0
36.0
36.0
1.15
0.236
36.67
-0.40
-1.50

JN









JQ









JS
37.0
36.0
37.0
0.58
0.118
36.67
-0.40
-1.50

JX








: • ;v;.
JY
36.0
36.0
36.0
0.00
0.000
36.00
-0.63
-1.73

K
36.0
37.0
39.0
1.53
0.354
37.33
-0.17
-1.27

EE








r
KT








V . \V "
KX
40.0
40.0
39.0
0.58
0.118
39.67
0.64
-0.46

L
38.0
38.0
39.0
0.58
0.118
38.33
0.17
-0.92

LE
44.0
44.0
44.0
0.00
0.000
44.00
2.14
1.04

LF
410
40.0
41.0
0.58
0.118
40.67
0.98
-0.12

LL









LR
33.0
36.0
36.0
1.73
0.354
35.00
-0.98
-2.08

LT
40.0
36.0
36.0
2.31
0.473
37.33
-0.17
-1.27

M
35.0
33.0
35.0
1.15
0.236
34.33
-1.21
-2.31

MF









MP
37.0
35.0
36.0
1.00
0.236
36.00
-0.63
-1.73

MT








•. ¦ • ¦;
MV
24.0
24.0
125.0
0.58
0.118
24.33
-4.68
-5.77
.X
MY
30.0
29.0
30.0
0.58
0.118
29.67
-2.83
-3.93

N






--

'• * ¦
• = No data submitted	TAG SYMBOLS	IT = Above control limit
0 s Insufficient data	x = Determined to be an outlier	U = Below control limit
v>	->
-------
(( '¦ =
34/44
ESD-LV Performance Evaluation: Blind-B, 21-Oct-1997

	^
Cesium-134








Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation

Res. 3
Sigma
{R + SR)
Average
(grand-avg). (known) Ttie
NA




.




NH
38.0
37.0
37.0
0.58
0.118
37.33
-0.17
-1.27

NJ
36.0
36.0
37.0
0.58
0.118
36.33
-0.52
-1.62

NK
33.0
34.0
34.0
0.58
0.118
33.67
-1.44
-2.54

NO
43.0
46.0
48.0
2.52
0.591
45.67
2.71
1.62

O
41.0
39.0
43.0
2.00
0.473
41.00
1.10
0.00

OB








OF:









OM
35.0
36.0
35.0
0.58
0.118
35.33
-0.86
-1.96

OS









OX








'-vO •<«:
OV








, '¦<$*;<<••
v
10.0
1210-v
-80
2,00
0.473 =
wbldos



PA






^ s 0 .,

'•life'
PB
42.0
41.0
43.0
1.00
0.236
42.00
1.44
0.35

PD
39.0
38.0
39.0
0.58
0.118
38.67
0.29
-0.81

PG









PM
38.0
33.0
36.0
2.52
0.591
35.67
-0.75
-1.85

PQ









PW
36.0
37.0
37.0
0.58
0.118
36.67
-0.40
-1.50

Q
35.0
34.0
35.0
0.58
0.118
34.67
-1.10
-2.19

QM
46.0
41.0
33.0
6.56
2.020
40.00
0.75
-0.35

QP
39.0
41.0
40.0
1.00
0.236
40.00
0.75
-0.35

QQ









QT
38.0
38.0
38.0
0.00
0.000
38.00
0.06
-1.04

Q V
41.0
43.0
41.0
1.15
0.236
41.67
1.33
0.23

QW
42.0
43.0
42.0
0.58
0.118
42.33
1.56
0.46

QX
42.0
41.0
42.0
0.58
0.118
41.67
1.33
0.23

QZ
38.0
37.0
36.0
1.00
0.236
37.00
¦0.29
-1.39

RB








V
RD









RF









RG









RI








v.
RK








•z" -
HP









RR









RU









RZ
42.0
41.0
41.0
0.58
0.118
41.33
1.21
0.12

S
35.0
35.0
35.0
0.00
0.000
35.00
-0.98
-2.08

sc
34.0
34.0
37.0
1.73
0.354
35.00
-0.98
-2.08

SD
31.0
37.0
35.0
3.06
0.709
34.33
-1.21
-2.31

SF
33.0
32.0
34.0
1.00
0.236
33.00
-1.67
-2.77

SG








•
SI
38.0
34.0
38.0
2.31
0.473
36.67
-0.40
-1.50

• =
No data submitted

TAG SYMBOLS

If s Above control limit
0 S
Insufficient data
x =
Determined to be an outlier
U = Below control limit
-------
r~
I	ESD-LV Performance Evaluation: Blind-B, 21-Oct-1997	35/44
Cesium-134
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tae
SL

....


•> - -i • .
, .,s , „ ,,^.v
	*
...

SM
38.0
40.0
39.0
1.00
0.236
39.00
0.41
-0.69

SN
40.0
34.0
36.0
3.06
0.709
36.67
-0.40
-1.50

so:








SR
38.0
33.0
32.0
3.21
0.709
34.33
-1.21
-2.31

ss
40.0
40.0
44.0
2.31
0.473
41.33
1.21
0.12

sx
35.0
35.0
33.0
1.15
0.236
34.33
-1.21
-2.31

sz
37.0
35.0
35.0
1.15
0.236
35.67
-0.75
-1.85

T
38.0
37.0
39.0
1.00
0.236
38.00
0.06
-1.04

TD
39.0
36.0
36.0
1.73
0.354
37.00
-0.29
-1.39

tl:







	
TN-









TQ
34.0
33.0
36.0
1.53
0.354
34.33
-1.21
-2.31

TS









TY









V









UA








'.zkz
UK
36.0
32.0
39.0
3.51
0.827
35.67
-0.75
-1.85

UP
38.0
36.0
37.0
1.00
0.236
37.00
-0.29
-1.39

UQ









UY
40.0
36.0
38.0
2.00
0.473
38.00
0.06
-1.04

VA
46.0
44.0
37.0
4.36
0.945
42.00
1.44
0.35

VC
35.0
36.0
36.0
0.58
0.118
35.67
-0.75
-1.85

VH









VI
35.0
35.0
36.0
0.58
0.118
35.33
-0.86
-1.96

VJ









VM









VO
42.0
38.0
33.0
4.51
1.120
37.67
-0.06
-1.15

VT
40.0
41.0
36.0
2.65
0.591
39.00
0.41
-0.69

W
39.0
36.0
38.0
1.53
0.354
37.67
-0.06
-1.15

WE









WH








yiVc/
WO
30.0
37.0
34.0
3.51
0.827
33.67
-1.44
-2.54

WR
37.0
38.0
39.0
1.00
0.236
38.00
0.06
-1.04

WW
41.0
37.0
34.0
3.51
0.827
37.33
-0.17
-1.27

X
35.0
42.0
35.0
4.04
0.827
37.33
-0.17
-1.27

XA
36.0
39.0
39.0
1.73
0.354
38.00
0.06
-1.04

XC









XD









XF
36.0
37.0
36.0
0.58
0.118
36.33
-0.52
-1.62

XI








< *
XJ








•
XK
38.0
36.0
37.0
1.00
0.236
37.00
-0.29
-1.39

XL









XM









• ^
0 B
No data submitted
Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
ft = Above control limit
•U e Below control limit
-------
(T
36/44
ESD-LV Performance Evaluation: Blind-B, 21-OcH997
Ceaium-134
Lab Res. 1
Res. 2
Res. 3
Exper. Rng anal	Normalized deviation
Sigma (R + SR) Average (grand-avg) (known) Tag
XN;>yf
to
Data sorted by Laboratory Average

Average
Tag
Lab
Averase
Tag
Lab
Average
Tag
Lab
10.00
X
P
36.67

SN
38.67

CP
20.00
X
IU
36.67

SI
38.67

CO
24.33
X
MV
36.67

PW
38.67

CE
29.67
a
MY
36.67

JS
39.00

VT
32.67

EB
36.67

JM
39.00

SM
33.00

SF
36.67

I)E
39.00

JE
33.67

WO
36.67

BC
39.00

BM
33.67

NK
37.00

XK
39.00

BL
33.67

FE
37.00

UP
39.33

EL
34.00

AJ
37.00

TD
39.33

BB
34.33

TQ
37.00

qz
39.67

KX
34.33

SX
37.00

i
39.67

DO
34.33

SR
37.33

X
39.67

AE
34.33

SD
37.33

WW
40.00

QP
34.33

M
37.33

NH
40.00

QM
34.67

Q
37.33

LT
40.00

GQ
34.67

HI
37.33

K
40.00

AF
35.00

sc
37.33

CA
40.33

A
35.00

s
37.33

AH
40.67

LF
35.00

LR
37.67

W
40.67

AZ
35.33

VI
37.67

vo
41.00

o
35.33

OM
37.67

FL
41.33

ss
35.33

DT
37.67

BN
41.33

RZ
35.67

VC
38.00

XA
41.33

CJ
35.67

UK
38.00

WR
41.33

BH
35.67

sz
38.00

UY
41.67

QX
35.67

PM
38.00

T
41.67

QU
35.67

AU
38.00

QT
41.67

c
35.67

AK
38.00

AW
42.00

VA
36.00

MP
38.33

L
42.00

PB
36,00

JY
38.33

HL
42.00

JG
36.00

FJ
38.33

HK
42.33

QW
36.00

BK
38.33

E
43.67

BO
36.33

XF
38.33

CX
44.00

LE
36.33

NJ
38.33

CS
45.67

NO
36.33

D
38.33

BA
48.67

AL



38.67

PD
79.33
X
DD
O = No data submitted	TAG SYMBOLS	ft s Above control limit
0 = Insufficient data	x s Determined to be an outlier	W s Below control limit
^ - 	 ¦ ¦ -¦ ^
-------
ESD-LV Performance Evaluation: Blind-B, 21-Oct-1997	37/44
Cesium>134
% responding labs	Frequency distribution
10-

—T—-, _,—r—,—r
dUi
-6	-4	-2	0+2	+4+4
Normalized deviation of the mean from the known value
% responding labs	Frequency distribution
10-
iifllnHnijil-

-4-2	0+2+4+4
Normalized deviation of the mean from the grand average
-------
ESD-LV Performance Evaluation: Blind-B, 21-Oct-1997
38/44
Cesium-137	Statistical Summary	182 Participants
The known value of this nuclide is 34.0 pCi/1 with an expected precision of 5.0; the control limits
are 25.3 to 42.7; the warning regions are 25.3 to 28.2 and 39.8 to 42.7
71 (39.0 %) Failed to respond
100(54.9 %) Within all limits
5(2.7 %) Outliers	
1 (0.5 %) Out of control
but riot an outlier
Statistic
Respondents
-• 5(2.7 %) 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
35.56
5.54
30.68
15.58
4.59
0.28
35.00
2.94
0.18
Grand Avg 35.51
2.40
5.78
6.77
4.45
0.63
35.00
2.94
0.42
6(5.4 %) More than 3 norm. S.D. •
5(4.5 %) Between 2 and 3 norm. S.D.
, 77(69.4 %) Within 1 norm. S.D.
«
!	of known value
'* 23(20.7 %) Between 1 and 2 norm. S.D.
-------
/p-
39/44
k

ESD-LV Performance Evaluation: Blind-B, 21-Oct-l»97

¦	-C
Cesium-137








Lab
Res. 1
Res. 2
Res. 3
Exper.
Rng anal

Normalized deviation

Sigma
(R + SR)
Average
(grand-avg)
(known) Tae
A
34.0
33.0
33.0
0.58
0.118
33.33
-0.75
-0.23

AE
34.0
34.0
35.0
0.58
0.118
34.33
-0.41
0.12

AF
36.0
37.0
40.0
2.08
0.473
37.67
0.75
1.27

AH
32.0
34.0
37.0
2.52
0.591
34.33
-0.41
0.12

AJ
35.0
32.0
35.0
1.73
0.354
34.00
-0.52
0.00

AK
35.0
35.0
34.0
0.58
0.118
34.67
-0.29
0.23

AL
31.0
36.0
34.0
2.52
0.591
33.67
-0.64
-0.12

AP









AR









AU
34.0
32.0
35.0
1.53
0.354
33.67
-0.64
-0.12

AW
34.0
35.0
36.0
1.00
0.236
35.00
-0.18
0.35

AZ
33.0
31.0
34.0
1.53
0.354
32.67
-0.99
-0.46

BA
31.0
31.0
30.0
0.58
0.118
30.67
-1.68
-1.15

BB
34.0
36.0
37.0
1.53
0.354
35.67
0.05
0.58

BC
34.0
36.0
35.0
LOO
0.236
35.00
-0.18
0.35

BG









BH
36.0
37.0
38.0
1.00
0.236
37.00
0.52
1.04

BK
35.0
36.0
35.0
0.58
0.118
35.33
-0.06
0.46

BL
33.0
35.0
32.0
1.53
0.354
33.33
-0.75
-0.23

BM
35.0
35.0
34.0
0.58
0.118
34.67
-0.29
0.23

BN
37.0
36.0
37.0
0.58
0.118
36.67
0.40
0.92

BO
35.0
36.0
37.0
1.00
0.236
36.00
0.17
0.69

BS








¦ •
BW








•
C
34.0
33.0
33.0
0.58
0.118
33.33
-0.75
-0.23

CA
35.0
36.0
35.0
0.58
0.118
35.33
-0.06
0.46

CC









CE
36.0
36.0
36.0
0.00
0.000
36.00
0.17
0.69

CJ
37.0
36.0
35.0
1.00
0.236
36.00
0.17
0.69

CO
32.0
33.0
35.0
1.53
0.354
33.33
-0.75
-0.23

CP
35.0
35.0
34.0
0.58
0.118
34.67
-0.29
0.23

CS
36.0
41.0
39.0
2.52
0.591
38.67
1.09
1.62

cx
28.0
38.0
35.0
5.13
1.345
33.67
-0.64
-0.12

D
34.0
34.0
34.0
0.00
0.000
34.00
-0.52
0.00

DB







-
• c
DD
76.0
76.0
76.0
0.58
0.118
75.67
13.91
14.43
¦' X"
DE
32.0
33.0
33.0
0.58
0.118
32.67
-0.99
-0.46

DI









DO
35.0
40.0
39.0
2.65
0.591
38.00
0.86
1,39

DT
34.0
37.0
33.0
2.08
0.473
34.67
-0.29
0.23

DZ








•
E
34.0
34.0
34.0
0.00
0.000
34.00
-0.52
0.00

EB
35.0
36.0
35.0
0.58
0.118
35.33
-0.06
0.46

EL
34.0
33.0
34.0
0.58
0.118
33.67
-0.64
-0.12

EO








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

ESD-LV Performance Evaluation: Blind-B, 21-Oct-1997
40/44
Cesium-137








T -L
Ree. 1
Res. 2
Res. 3
Exper.
Rug anal

Normalized deviation

Lab
Sigma
(R + 8R)
Average
(grand-avg) (known) Tacr
ICR-''







	

EV








rk.l* ¦;
EX









FE
34.0
39.0
37.0
2.52
0.591
36.67
0.40
0.92

•FF'::








FJ
38.0
37.0
38.0
0.58
0.118
37.67
0.75
1.27

FL
37.0
36.0
33.0
2.08
0.473
35.33
-0.06
0.46

FN








fca,-








k+Jt
GQ
36.0
36.0
36.0
0.00
0.000
36.00
0.17
0,69

WM,
324I0JS
mm
p28»>
3.61
&82*

im %

Wi
HK
37.0
37.0
38.0
0.58
0^118
37.33
0.63
1.15

HL
40.0
37.0
37.0
1.73
0.354
38.00
0.86
1.39

•HPt









HX









I

35.0
38.0
1.73
0.354
36.00
0.17
0.69










ro
i7.o:
18,0
18.0
0.58
0.118
Mil


it
J



rfj.


If
JE
36.0
37.0
35.0
1.00
0.236
36.00
0.17
0.69

JG
51.0
61.0
52.0
0.58
0.118

Islal
6.66
if#
JM
35.0
36.0
36.0
0.58
0.118
35.67
0.05
0.58

JN









JQ








y*
JS
33.0
33.0
34.0
0.58
0.118
33.33
-0.75
-0.23

JX









JY
37.0
36.0
36.0
0.58
0.118
36.33
0.28
0.81

K
33.0
33.0
35.0
1.15
0.236
33.67
-0.64
-0.12

EE








¦ysyrtn
KT








lit
KX
35.0
35.0
38.0
1.73
0.354
36.00
0.17
0.69

L
35.0
37.0
33.0
2.00
0.473
35.00
-0.18
0.35

LE
44.0
41.0
42.0
1.53
0.354
42.33
2.36
2.89

LF
37.0
36.0
36.0
0.58
0.118
36.33
0.28
0.81

LL









LR
33.0
32.0
35.0
1.53
0.354
33.33
-0.75
-0.23

LT
35.0
35.0
34.0
0.58
0.118
34.67
-0.29
0.23

M
36.0
34.0
35.0
1.00
0.236
35.00
-0.18
0.35

MF









MP
32.0
35.0
35.0
1.73
0.354
34.00
-0.52
0.00

MT









MV
310
31.0
30.0
0.58
0.118
30.67
-1.68
-1.15

MY
31.0
30.0
31.0
0.58
0.118
30.67
-1.68
-1.15

N








X •''
• s No data submitted TAG SYMBOLS ft & Above control limit
_ 0 & Insufficient data	x s Determined to be aa outlier	li g Below control limit
-------
ESD-LV Performance Evaluation: Blind-B, 21-Oct-1997
Cesium-137
Lab
Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Taj?
NA";




,




NH
37.0
39.0
39.0
1.15
0.236
38.33
0.98
1.50

NJ
35.0
34.0
36.0
1.00
0.236
35.00
-0.18
0.35

NK
34.0
32.0
33.0
1.00
0.236
33.00
-0.87
-0.35

NO
39.0
44.0
46.0
3.61
0.827
43.00
2.59
3.12
It
O
42.0
40.0
36.0
3.06
0.709
39.33
1.32
1.85

OB
36.0
37.0
37.0
0.58
0.118
36.67
0.40
0.92

OF








OM
39.0
38.0
39.0
0.58
0.118
38.67
1.09
1.62

OS









OX;









OV








;V; ¦
p.;-.-
5*4*0?;
/11K0

5.00
L345?
iMo
-7.46
$.93;
:
PA









PB
32.0
32.0
32.0
0.00
0.000
32.00
-1.22
-0.69

PD
35.0
35.0
38.0
1.73
0.354
36.00
0.17
0.69

PG









PM
33.0
38.0
33.0
2.89
0.591
34.67
-0.29
0.23

PQ









PW
35.0
33.0
35.0
1.15
0.236
34.33
-0.41
0.12

Q
32.0
37.0
37.0
2.89
0.591
35.33
-0.06
0.46

QM
42.0
38.0
37.0
2.65
0.591
39.00
1.21
1.73

QP
35.0
35.0
35.0
0.00
0.000
35.00
-0.18
0.35

QQ









QT
35.0
36.0
33.0
1.53
0.354
34.67
-0.29
0.23

QU
40.0
40.0
38.0
1.15
0.236
39.33
1.32
1.85

QW
35.0
43.0
38.0
4.04
0.945
38.67
1.09
1.62

QX
41.0
39.0
41.0
1.15
0.236
40.33
1.67
2.19

QZ
36.0
38.0
37.0
1.00
0.236
37.00
0.52
1.04

RB









RD









RF









RG









RI









RK









RP









RR








- \
RU









RZ
38.0
38.0
37.0
0.58
0.118
37.67
0.75
1.27

S
32.0
34.0
33.0
1.00
0.236
33.00
-0.87
-0.35

sc
36.0
34.0
34.0
1.15
0.236
34.67
-0.29
0.23

SD
32.0
33.0
34.0
1.00
0.236
33.00
-0.87
-0.35

SF
32.0
34.0
34.0
1.15
0.236
33.33
-0.75
-0.23

SG








•
SI
37.0
40.0
34.0
3.00
0.709
37.00
0.52
1.04

• = No data submitted	TAG SYMBOLS	ft = Above control limit
(Pi = InRnffirient. dntn	x = Determined to be an outlier	U = Below control limit
=y
-------
ESD-LV Performance Evaluation: Blind-B, 21-Oct-l&97
Cesium-137







—.
Lab
Res. 1
Res. 2
Res. 3
Exper.
Rug anal

Normalized deviation

Sigma
 A
SR
33.0
31.0
33.0
1.15
0.236
32.33
-1.10
-0.58

SS
40.0
38.0
37.0
1.53
0.354
38.33
0.98
1.50

sx
sz
34.0
31.0
32.0
1.53
0.354
32.33
-1.10
-0.58

36.0
33.0
31.0
2.52
0.591
33.33
-0.75
-0.23

T
34.0
34.0
36.0
1.15
0.236
34.67
-0.29
0.23

TD
34.0
36.0
39.0
2.52
0.591
36-33
0.28
0.81

TL









TN








iV-r-
TQ
35.0
34^0
34.0
0.58
0.118
34.33
-0.41
0.12
TS '









TY








fM
U V









¦UAs









UK
40.0
30.0
35.0
5.00
1.345
35.00
-0.18
0.36

VP
36.0
36.0
36.0
0.00
0.000
36.00
0.17
0.69

vq









UY
35.0
39.0
35.0
2.31
0.473
36.33
0.28
0.81

VA
43.0
41.0
39.0
2.00
0.473
41.00
1.90
2.42

vc
34.0
34.0
34.0
0.00
0.000
34.00
-0.52
0.00

VH








Z*', -r
VI
36.0
39.0
33.0
3.00
0.709
36.00
0.17
0.69

VJ









VM









vo
33.0
33.0
32.0
0.58
0.118
32.67
-0.99
-0.46

VT
40.0
42.0
41.0
1.00
0.236
41.00
1.90
2.42

W
36.0
33.0
34.0
1.53
0.354
34.33
-0.41
0.12

WB









WH








:V^/
WO
40.0
40.0
40.0
0.00
0.000
40.00
1.55
2.08

WE
33.0
35.0
35.0
1.15
0.236
34.33
-0.41
0.12

WW
33.0
32.0
31.0
1.00
0.236
32.00
-1.22
-0.69

X
40.0
40.0
38.0
1.15
0.236
39.33
1.32
1.85

XA
33.0
35.0
34.0
1.00
0.236
34.00
-0.52
0.00

xc









XD









XF
35.0
37.0
37.0
1.15
0.236
36.33
0.28
0.81

XI








. « ^
XJ








. ~ 'f
XK
39.0
37.0
38.0
1.00
0.236
38.00
0.86
1.39

XL








r,#'
XM








-- » '
• s No data submitted TAG SYMBOLS	ft s Above control limit ¦
0 b Insufficient data	x b Determined to be an outlier	41 a Below control limit ^
-------
43/44
ESD-LV Performance Evaluation: Blind-B, 21-Oct-1997
Cesium-137
Lab Res. 1
Res. 2
Res. 3
Exper. Rng anal	Normalized deviation
Sigma (R + SR) Average (grand-avg) "(known) Tag
XN.
XO
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
14.00
X
P
34.33

TQ
36.00

BO
17.67
X
IU
34.33

PW
36.33

XF
24.33
X
HI
34.33

AH
36.33

UY
30.67

MY
34.33

AE
36.33

TD
30.67

MV
34.67

T
36.33

LF
30.67

BA
34.67

SC
36.33

JY
32.00

WW
34.67

QT
36.67

OB
32.00

PB
34.67

PM
36.67

FE
32.33

sx
34.67

LT
36.67

BN
32.33

SR
34.67

DT
37.00

SM
32.67

VO
34.67

CP
37.00

SI
32.67

DE
34.67

BM
37.00

QZ
32.67

AZ
34.67

AK
37.00

BH
33.00

SD
35.00

UK
37.33

HK
33.00

S
35.00

QP
37.67

RZ
33.00

NK
35.00

NJ
37.67

FJ
33.33

SZ
35.00

M
37.67

AF
33.33

SF
35.00

L
38.00

XK
33.33

LR
35.00

BC
38.00

HL
33.33

JS
35.00

AW
38.00

DO
33.33

CO
35.33

SN
38.33

SS
33.33

c
35.33

Q
38.33

NH
33.33

BL
35.33

FL
38.67

QW
33.33

A
35.33

EB
38.67

OM
33.67

K
35.33

CA
38.67

CS
33.67

EL
35.33

BK
39.00

QM
33.67

cx
35.67

JM
39.33

X
33.67

AU
35.67

BB
39.33

QU
33.67

AL
36.00

VI
39.33

o
34.00

XA
36.00

UP
40.00

wo
34.00

VC
36.00

PD
40.33

QX
34.00

MP
36.00

KX
41.00

VT
34.00

E
36.00

JE
41.00

VA
34.00

D
36.00

I
42.33

LE
34.00

AJ
36.00

GQ
43.00
It
NO
34.33

WR
36.00

CJ
51.33
X
JG
34.33

W
36.00

CE
75.67
X
DD
• s No data submitted

TAG SYMBOLS

ft
= Above control limit
0 3 Insufficient data

x = Determined to be an outlier

= Below control limit
-------
ESD-LV Performance Evaluation: Blind-B, 21-Oct-1997	44/44
Cesium-197
% responding labs	Frequency distribution
104
o
jj^ll

¦t—¦—i i—* i » *i mimufHfi	i , . f
-6	-4	-2	0	42	+4	+6
Normalized deviation of the mean from the known value
% responding labs	Frequency distribution
HjU
10-
oil,			H-—,	, I H—I
_	_		r	I ~ 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-98/009
January 1998
4»EPA Gross Alpha-Beta in
Water Performance
Evaluation Study
A Statistical Evaluation of the
October 31, 1997 Data
006ECB98COV-009
-------
Gross Alpha-Beta in Water
Performance Evaluation Study
October 31, 1997
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; October 31, 1997.
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: Gross Alpha-Beta in Water, 31-Oct-1997
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 pnge 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, 31-Oct-1997
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, 31-Oct-1997 3/16
Gross Alpha	Statistical Summary	188 Participants
The known value of this nuclide is 14.7 pCi/1 with an expected precision of 5.0; the control limits
are 6.0 to 23.4; the warning regions are 6.0 to 8.9 and 20.5 to 23.4
33(17.6 %) Failed to respond »
, 118(62.8 %) Within all limits
4(2.1 %) Outliers •' /
7(3.7 %) Out of control •
but not an outlier
| |
Statistic
I I I
Respondents
26(13.8 %) In warning zone
but within control
Non-outliers
Mean
12.90
Grand Avg 12.26
Std. Dev.
5.70
3.92
Variance
32.54
15.33
% Coef. of Var.
44.21
31.93
% deviation of mean from known value
-12.23
-16.60
Norm. dev. of mean from known value
-0.32
-0.62
Median
12.20
12.17
% deviation of median from known value
-17.01
-17.23
Norm. dev. of median from known value
-0.44
-0.65
11(7.1 %) More than 3 norm. S.D.
26(16.8 %) Between 2 and 3 norm. S.D.
;67(43.2 %) Within 1 norm. S.D.
of known value
51(32.9 %) Between 1 and 2 norm. S.D.
-------
4/16 ESD-LV Performance Evaluation: Gross Alpha-Beta in Water, 31-Oct-1997
Gross Alpha
Lab
Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known)
Tag
A
9.7
9.5
11.0
0.81
0.177
10.07
-0.76
-1.61

AE
17.1
18.2
16.5
0.86
0.201
17.27
1.73
0.89

AF
9.4
7.9
8.5
0.75
0.177
8.60
-1.27
-2.11

AH
11.0
10.6
9.2
0.95
0.213
10.27
-0.69
-1.54

AJ
5.3
5.6
6.9
0.85
0.189
5.93
-2.19
-3.04
U
AK
11.6
11.9
12.5
0.46
0.106
12.00
-0.09
-0.94

AL
14.3
14.5
16.5
1.22
0.260
15.10
0.98
0.14

AP
13.7
13.5
13.2
0.25
0.059
13.47
0.42
-0.43

AR
14.0
14.5
10.0
2.47
0.532
12.83
0.20
-0.65

AU
7.5
7.0
7.7
0.36
0.083
7.40
-1.68
-2.53

AW
10.4
11.5
13.7
1.68
0.390
11.87
-0.14
-0.98

AZ
15.0
14.5
12.8
1.15
0.260
14.10
0.64
-0.21

BA
13.2
12.0
13.0
0.64
0.142
12.73
0.16
-0.68

BB
5.1
5.1
5.1
0.00
0.000
5.10
-2.48
-3.33
Ji
BC
15.1
16.2
14.7
0.78
0.177
15.33
1.06
0.22

bg:








• '
BH
13.9
16.9
15.7
1.51
0.354
15.50
1.12
0.28

BK
12.9
12.7
13.0
0.15
0.035
12.87
0.21
-0.64

BL
18.1
20.7
19.8
1.32
0.307
19.53
2.52
1.67

BM
17.5
18.4
18.4
0.52
0.106
18.10
2.02
1.18

BN
28.JT
24.V
27.8
2.29
0.496
26.73
5.01
4.17"
X
BO
10.3
9.4
8.8
0.75
0.177
9.50
-0.96
-1.80

BS
26.6
21.7
19.0
3.85
0.898
22.43
3.52
2.68

C
11.8
12.2
12.6
0.40
0.095
12.20
-0.02
-0.87

CA
5.1
5.0
4.9
0.10
0.024
5.00
-2.51
-3.36

CC








•
CE
12.7
14.2
12.7
0.87
0.177
13.20
0.33
-0.52

CJ
18.0
20.0
21.0
1.53
0.354
19.67
2.57
1.72

CO
452
623
4&6
3;76
0.839
48.03
12.39
lL55f
X
CP
9.2
13.5
9.3
2.45
0.508
10.67
-0.55
-1.40

cs
12.8
12.8
11.7
0.64
0.130
12.43
0.06
-0.79

cx
8.3
9.8
8.8
0.76
0.177
8.97
-1.14
-1.99

D
17.2
16.2
22.0
3.10
0.685
18.47
2.15
1.30

DB
13.4
13.1
12.3
0.57
0.130
12.93
0.23
-0.61

DD
14.9
12.8
14.4
1.10
0.248
14.03
0.61
-0.23

DE
12.3
12.6
12.9
0.30
0.071
12.60
0.12
-0.73

DH
13.1
11.4
13.1
0.98
0.201
12.53
0.09
-0.75

DO
13.4
14.8
15.1
0.91
0.201
14.43
0.75
-0.09

DR
3.2
2.4
2.6
0.42
0.095
2.73
-3.30
-4.15
11
DT
12.3
12.4
13.5
0.67
0.142
12.73
0.16
-0.68

DZ
14.2
14.3
15.1
0.49
0.106
14.53
0.79
-0.06

E
11.6
12.7
12.2
0.55
0.130
12.17
-0.03
-0.88

EB
23.1
24.4
21.2
1.61
0.378
22.90
3.69
2.84

EL
9.9
8.3
8.2
0.95
0.201
8.80
-1.20
-2.04

EO
8.0
11.0
12.0
2.08
0.473
10.33
-0.67
-1.51

• = 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: Gross Alpha-Beta in Water, 31-Oct-1997 5/16
Gross Alpha







\
Lab
Res. 1


Exper.
Rng anal

Normalized deviation

Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
ER
12.1
12.1
11.9
0.12
0.024
12.03
-0.08
-0.92

EV
6.7
8.1
7.7
0.72
0.165
7.50
-1.65
-2.49

' EW







¦
•
EX
8.9
10.4
7.6
1.40
0.331
8.97
-1.14
-1.99

FE
14.1
15.1
14.4
0.51
0.118
14.53
0.79
-0.06

FF
12.5
11.8
11.1
0.70
0.165
11.80
-0.16
-1.00

FJ








' •
FL
13.3
18.0
13.7
2.61
0.555
15.00
0.95
0.10

FN
15.0
13.0
15.0
1.15
0.236
14.33
0.72
-0.13

GQ
12.5
12.5
11.9
0.35
0.071
12.30
0.01
-0.83

GZ
12.8
13.3
13.7
0.45
0.106
13.27
0.35
-0.50

TTF
10.6
10.4
11.2
0.42
0.095
10.73
-0.53
-1.37

HI
9.3
9.5
8.0
0.81
0.177
8.93
-1.15
-2.00

HK
9.7
9.1
9.3
0.31
0.071
9.37
-1.00
-1.85

HL
7.9
6.9
8.4
0.76
0.177
7.73
-1.57
-2.41

HP








-v. v. V -
'
I
8.8
8.1
10.0
0.96
0.224
8.97
-1.14
-1.99

m
18.3
11.0
15.5
3.68
0.862
14.93
0.93
0.08

IU








Z*:*
J









JE
8.2
8.6
7.7
0.45
0.106
8.17
-1.42
-2.26

JG
9.6
9.6
9.5
0.06
0.012
9.57
-0.93
-1.78

JM
13.5
14.2
12.5
0.85
0.201
13.40
0.40
-0.45

JN
7.1
9.1
12.9
2.95
0.685
9.70
-0.89
-1.73

JP








•
JQ
13.6
9.9
13.2
2.03
0.437
12.23
-0.01
-0.85

JS
11.5
12.5
10.1
1.21
0.284
11.37
-0.31
-1.15

JY
9.7
10.5
13.5
2.00
0.449
11.23
-0.36
-1.20

K
11.7
9.4
12.6
1.65
0.378
11.23
-0.36
-1.20

KE
11.8
11.5
11.4
0.21
0.047
11.57
-0.24
-1.09

KH
8.7
8.9
8.5
0.20
0.047
8.70
-1.23
-2.08

KT
14.0
15.0
16.0
1.00
0.236
15.00
0.95
0.10

KX
16.0
18.0
19.0
1.53
0.354
17.67
1.87
1.03

L
9.4
9.5
10.2
0.44
0.095
9.70
-0.89
-1.73

T.F.
6.9
9.0
5.8
1.63
0.378
7.23
-1.74
-2.59

LF
13.0
12.0
18.0
3.21
0.709
14.33
0.72
-0.13

LL
21.8
20.4
20.7
0.74
0.165
20.97
3.02
2.17

LR
6.8
7.1
8.2
0.74
0.165
7.37
-1.69
-2.54

LT
13.5
14.9
8.9
3.14
0.709
12.43
0.06
-0.79

M








¦ •
MF
12.1
12.3
12.9
0.42
0.095
12.43
0.06
-0.79

MV
13.9
11.2
12.9
1.37
0.319
12.67
0.14
-0.70

MX
6.8
6.0
6.3
0.40
0.095
6.37
-2.04
-2.89

N








, •
NA
17.6
17.8
14.3
1.97
0.413
16.57
1.49
0.65

• s No data submitted

TAG SYMBOLS

ft = Above control limit
I 0 = Insufficient data
X s
Determined to be an outlier
J1 = Below control limit
-------
(f	
6/16
ESD-LV Performance Evaluation: Gross Alpha-Beta in Water, 31-Oct-1997
	
Gross Alpha








Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation

Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
NB
39.2
43,0
46.3
3.55
0.839
42.83
10.59
9.75
X
NH
13.0
12.0
10.0
1.53
0.354
11.67
-0.21
-1.05

NJ
6.8
7.9
7.5
0.56
0.130
7.40
-1.68
-2.53

NK
10.1
12.3
13.4
1.68
0.390
11.93
-0.11
-0.96

NO
14.0
16.0
18.0
2.00
0.473
16.00
1.30
0.45

NP
11.7
9.0
8.5
1.72
0.378
9.73
-0.88
-1.72

O
15.1
15.5
14.8
0.35
0.083
1513
1.00
0.15

OA








•
OB
5.1
7.4
7.3
1.30
0.272
6.60
-1.96
-2.81

OF
24.3
13.0
7.9
8.39
2.786
15.07
0.97
0.13

OS
12.2
13.7
10.8
1.45
0.343
12.23
-0.01
-0.85

OT








. •
OX








•
OY








, • "
P
20.4
21.4
24.7
2.25
0.508
22.17
3.43
2.59

PA
5.8
6.0
5.9
0.10
0.024
5.90
-2.20
-3.05

PB
14.4
13.4
12.5
0.95
0.224
13.43
0.41
-0.44

PD









PG
16.3
14.0
12.7
1.82
0.425
14.33
0.72
-0.13

PM
16.1
17.7
14.6
1.55
0.366
16.13
1.34
0.50

PQ








•
Q
9.5
9.7
10.8
0.70
0.154
10.00
-0.78
-1.63

QM
8.9
12.6
9.0
2.11
0.437
10.17
-0.73
-1.57

QP
14.0
14.8
12.1
1.39
0.319
13.63
0.48
-0.37

QQ
14.3
12.0
12.9
1.16
0.272
13.07
0.28
-0.57

QT
10.7
18.8
11.1
4.57
0.957
13.53
0.44
-0.40

QU
9.1
10.5
8.6
0.98
0.224
9.40
-0.99
-1.84

QW
13.2
9.3
11.4
1.95
0.461
11.30
-0.33
-1.18

QX
8.6
8.9
9.3
0.35
0.083
8.93
-1.15
-2.00

QZ
12.6
14.0
13.1
0.71
0.165
13.23
0.34
-0.51

R
7.2
8.2
6.7
0.76
0.177
7.37
-1.69
-2.54

RB
16.0
18.6
17.1
1.31
0.307
17.23
1.72
0.88

RD
25.5
13.4
14.1
6.79
1.818
17.67
1.87
1.03

RG
10.5
10.3
10.3
0.12
0.024
10.37
-0.66
-1.50

HI
14.1
10.6
11.0
1.92
0.413
11.90
-0.12
-0.97

RK








•
RR
18.0
17.0
18.0
0.58
0.118
17.67
1.87
1.03

RZ
12.7
11.3
11.6
0.74
0.165
11.87
-0.14
-0.98

S
12.6
11.7
12.2
0.45
0.106
12.17
-0.03
-0.88

sc
9.0
13.3
14.3
2.82
0.626
12.20
-0.02
-0.87

SD
15.4
14.2
14.8
0.60
0.142
14.80
0.88
0.03

SF
9.6
12.0
11.0
1.21
0.284
10.87
-0.48
-1.33

SG
9.3
8.7
8.8
0.32
0.071
8.93
-1.15
-2.00

SI
8.4
8.5
8.5
0.06
0.012
8.47
-1.31
-2.16

SL








• -
• = No data submitted

TAG SYMBOLS

ft s Above control limit
0 = Insufficient data
x =
Determined to be an outlier
11 = Below control limit
	V
-------
ESD-LV Performance Evaluation: Gross Alpha-Beta in Water, 31-Oct-1997 7/16
v		
/
Gross Alpha
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
SM
12.6
15.9
16.9
2.25
0.508
15.13
1.00
0.15

SN
5.7
5.4
5.5
0.15
0.035
5.53
-2.33
-3.18

SO
9.4
10.4
11.2
0.90
0.213
10.33
-0.67
-1.51

SR
21.6
15.7
18.6
2.95
0.697
18.63
2.21
1.36

SS
10.4
10.0
9.7
0.35
0.083
10.03
-0.77
-1.62

SU
9.6
8.5
7.2
1.20
0.284
8.43
-1.33
-2.17

SV
15.1
12.3
16.6
2.18
0.508
14.67
0.83
-0.01

sx
20.8
20.5
23.5
1.65
0.354
21.60
3.24
2.39

sz
10.2
10.9
10.1
0.44
0.095
10.40
-0.64
-1.49

T
13.5
11.7
13.0
0.93
0.213
12.73
0.16
-0.68

TD
6.6
9.2
12.4
2.91
0.685
9.40
-0.99
-1.84

"ttT








•
TN
7.6
6.1
5.8
0.96
0.213
6.50
-2.00
-2.84

TO
10.2
7.9
9.8
1.23
0.272
9.30
-1.03
-1.87

TQ
8.5
7.9
7.6
0.46
0.106
8.00
-1.48
-2.32

TW
12.2
17.0
10.1
3.54
0.815
13.10
0.29
-0.55

TX









TY
8.6
8.3
8.2
0.21
0.047
8.37
-1.35
-2.19

U
15.2
18.0
18.6
1.81
0.402
17.27
1.73
0.89

UA
30.6
33.5
29.5
2 18
0.473
3L00;
6.49
5:85
X
UP
10.8
11.0
11.3
0.25
0.059
11.03
-0.42
-1.27

UQ
15.3
13.5
13.7
0.99
0.213
14.17
0.66
-0.18

UY








V*
VA








v\ ^
VC









VH
11.3
10.5
10.6
0.44
0.095
10.80
-0.51
-1.35

VI
7.8
7.8
8.0
0.12
0.024
7.87
-1.52
-2.37

VJ
6.0
6.5
8.1
1.10
0.248
6.87
-1.87
-2.71

VO
12.1
11.3
12.5
0.61
0.142
11.97
-0.10
-0.95

VT









W
10.0
13.0
12.0
1.53
0.354
11.67
-0.21
-1.05

WE
10.7
9.4
11.0
0.85
0.189
10.37
-0.66
-1.50

WH
7.5
7.7
9.0
0.81
0.177
8.07
-1.45
-2.30

WJ








•
WN
9.6
9.5
11.0
0.84
0.177
10.03
-0.77
-1.62

WO









WP
5.7
11.4
13.0
3.84
0.862
10.03
-0.77
-1.62

WR
17.7
17.7
19.1
0.81
0.165
18.17
2.05
1.20

WS









WU








•
WW
10.2
9.9
100
0.15
0.035
10.03
-0.77
-1.62

wx









X
15.6
13.0
12.8
1.56
0.331
1.3.80
0^53
-0.31

XB








'• v
XC








:
• s No data submitted	TAG SYMBOLS	ft = Above control limit
I 0 = Insufficient data	x = Determined to be an outlier	U = Below control limit
^	1 ¦	¦	i ¦	. .i	ii			....	¦ ¦¦	-¦	.i —		~
-------
8/16 ESD-LV Performance Evaluation: Gross Alpha-Beta in Water, 31-Oct-1997
Gross Alpha
Lab Res. 1
Res. 2
Rea. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
XD








XF
19.0
22.5
13.9
4.32
1.030
18.47
2.15
1.30
XI








XJ
13.2
11.9
13.1
0.72
0.154
12.73
0.16
-0.68
XK
14.2
14.0
19.7
3.23
0.673
15.97
1.28
0.44
XL
15.0
15.8
20.2
2.80
0.614
17.00
1.64
0.80
XM
14.5
14.2
11.9
1.42
0.307
13.53
0.44
-0.40
XN
28.0
22.5
24.7
2.77
0.650
25.07
4.44
3.59
Data sorted by Laboratory Average
ir
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
2.73
Ji
DR
9.37

HK
11.87

AW
5.00
U
CA
9.40

TD
11.87

RZ
5.10
U
BB
9.40

QU
11.90

RI
5.53
U
SN
9.50

BO
11.93

NK
5.90
U
PA
9.57

JG
11.97

VO
5.93
u
AJ
9.70

L
12.00

AK
6.37

MX
9.70

JN
12.03

ER
6.50

TN
9.73

NP
12.17

S
6.60

OB
10.00

Q
12.17

E
6.87

VJ
10.03

WW
12.20

SC
7.23

LE
10.03

WP
12.20

c
7.37

R
10.03

WN
12.23

OS
7.37

LR
10.03

ss
12.23

JQ
7.40

NJ
10.07

A
12.30

GQ
7.40

AU
10.17

QM
12.43

MF
7.50

EV
10.27

AH
12.43

LT
7.73

HL
10.33

SO
12.43

CS
7.87

VI
10.33

EO
12.53

DH
8.00

TQ
10.37

WE
12.60

DE
8.07

WH
10.37

RG
12.67

MV
8.17

JE
10.40

SZ
12.73

XJ
8.37

TY
10.67

CP
12.73

T
8.43

SU
10.73

HE
12.73

DT
8.47

SI
10.80

VH
12.73

BA
8.60

AF
10.87

SF
12.83

AR
8.70

KH
11.03

UP
12.87

BK
8.80

EL
11.23

K
12.93

DB
8.93

SG
11.23

JY
13.07

QQ
8.93

QX
11.30

QW
13.10

TW
8.93

HI
11.37

JS
13.20

CE
8.97

EX
11.57

KE
13.23

QZ
8.97

I
11.67

W
13.27

GZ
8.97

CX
11.67

NH
13.40

JM
9.30

TO
11.80

FF
13.43

PB
• = No data submitted
0 s Insufficient data

TAG SYMBOLS
x = Determined to be an outlier
ir
u
= Above control limit
s Below control limit
-------
; —^
ESD-LV Performance Evaluation: Gross Alpha-Beta in Water, 31-Oct-1997 9/16
Gross Alpha
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
13.47

AP
15.00

KT
17.67

KX
13.53

XM
15.00

FL
18.10

BM
13.53

QT
15.07

OF
18.17

WR
13.63

QP
15.10

AL
18.47

XF
13.80

X
15.13

SM
18.47

D
14.03

DD
15.13

O
18.63

SR
14.10

AZ
15.33

BC
19.53

BL
14.17

UQ
15.50

BH
19.67

CJ
14.33

PG
15.97

XK
20.97

LL
14.33

LF
16.00

NO
21.60

sx
14.33

FN
16.13

PM
22.17

p
14.43

DO
16.57

NA
22.43

BS
14.53

FE
17.00

XL
22.90

EB
14.53

DZ
17.23

KB
25.07
ft
XN
14.67

sv
17.27

U
26.73
X
BN
14.80

SD
17.27

AE
31.00
X
UA
14.93

ID
17.67

RE
42.83
X
NB



17.67

KD
48.03
X
CO
% responding labs	Frequency distribution
10-:

I ¦	i	¦ i M
-4	-2	0	+2	+4	+6
Normalized deviation of the mean from the known value
% responding labs	Frequency distribution
10-
-lilfllillll.lf- IT- .
2	0	-f2
-l	1	1	¦ i -¦,¥h","'T""T""T"--T- ~ T	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 s Determined to be an outlier	U = Below control limit
^ . 	
-------
—— »
ESD-LV Performance Evaluation: Gross Alpha-Beta in Water, 31-Oct-1997 10 / 16
Gross Beta	Statistical Summary	188 Participants
The known value of this nuclide is 48.9 pCi/1 with an expected precision of 5.0; the control limits
are 40.2 to 57.6; the warning regions are 40.2 to 43.1 and 54.7 to 57.6
Statistic	Respondents	Non-outliers
Mean
48.67
Grand Avg 48.88
Std. Dev.
8.55
5.88
Variance
73.15
34.61
% Coef. of Var.
17.57
12.04
% deviation of mean from known value
-0.47
-0.03
Norm. dev. of mean from known value
-0.03
0.00
Median
49.07
49.07
% deviation of median from known value
0.34
0.34
Norm. dev. of median from known value
0.02
0.03
-------
If
11/16 ESD-LV Performance Evaluation: Gross Alpha-Beta in Water, 31-Oct-1997

Gross Beta







\
Lab
Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
A
50.7
48.4
51.4
1.57
0.354
50.17
0.44
0.44

AE
43.8
43.4
45.9
1.34
0.295
44.37
-1.57
-1.57

AF
49.4
48.2
50.9
1.35
0.319
49.50
0.21
0.21

AH
53.3
57.1
52.5
2.46
0.543
54.30
1.88
1.87

AJ
47.0
46.9
45.8
0.67
0.142
46.57
-0.80
-0.81

AK
53.8
54.9
54.7
0.59
0.130
54.47
1.93
1.93

AL
44.0
46.2
46.1
1.24
0.260
45.43
-1.20
-1.20

AP
47.8
50.4
51.0
1.70
0.378
49.73
0.29
0.29

AR
54.0
52.3
54.1
1.01
0.213
53.47
1.59
1.58

AU
45.4
46.3
46.7
0.67
0.154
46.13
-0.95
-0.96

AW
49.4
49.7
54.8
3.03
0.638
51.30
0.84
0.83

AZ
51.7
47.6
48.0
2.26
0.484
49.10
0.07
0.07

BA
53.9
50.2
51.7
1.86
0.437
51.93
1.06
1.05

BB
51.3
45.4
48.4
2.95
0.697
48.37
-0.18
-0.18

BC
47.0
46.9
46.4
0.32
0.071
46.77
-0.73
-0.74

BG








•
BH
45.0
46.3
45.5
0.66
0.154
45.60
-1.14
-1.14

BK
50.2
48.9
51.8
1.45
0.343
50.30
0.49
0.48

BL
47.9
47.1
48.4
0.66
0.154
47.80
-0.38
-0.38

BM
51.6
48.3
48.0
2.00
0.425
49.30
0.14
0.14

BN
69.9
65.4
83.2
9.26
3.101
72.83
8.30
8.29
'X" '
BO
46.2
47.3
47.7
0.78
0.177
47.07
-0.63
-0.64

BS
51.9
50.2
47.4
2.27
0.532
49.83
0.33
0.32

C
49.9
50.3
46.7
1.97
0.425
48.97
0.03
0.02

CA
20.1
19.2
220.7
0^75
0.177
20.00
-10.01
-10.01
X
CC







•
CE
46.7
49.6
48.1
1.45
0.343
48.13
-0.26
-0.27

CJ
51.0
54.0
47.0
3.51
0.827
50.67
0.62
0.61

CO
33.5
36.6
33.6
1.76
0.366
34.57
-4.96
-4.97

CP
58.2
63.1
59.9
2.49
0.579
60.40
3.99
3.98
IT
cs
48.8
41.3
42.3
4.07
0.886
44.13
-1.65
-1.65

cx
37.4
38.7
34.8
1.99
0.461
36.97
-4.13
-4.13
u.
D
52.5
53.1
54.7
1.14
0.260
53.43
1.58
1.57

DB
50.0
49.9
48.6
0.78
0.165
49.50
0.21
0.21

DD
47.6
48.9
49.1
0.81
0.177
48.53
-0.12
-0.13

DE
52.0
52.5
53.3
0.66
0.154
52.60
1.29
1.28

DH
44.8
48.5
51.7
3.45
0.815
48.33
-0.19
-0.20

DO
55.0
53.0
51.0
2.00
0.473
53.00
1.43
1.42

DR
50.0
49.3
54.1
2.59
0.567
51.13
0.78
0.77

DT
48.2
48.5
46.7
0.96
0.213
47.80
-0.38
-0.38

DZ
39.7
38.7
41.2
1.26
0.295
39.87
-3.12
I
CO
>—»
CO
li
E
49.3
48.0
49.3
0.75
0.154
48.87
-0.01
-0.01

EB
53.3
52.9
53.6
0.35
. 0.083
53.27
1.52
1.51

EL
48.6
45.4
47.0
1.60
0.378
47.00
-0.65
-0.66

EO
57.0
58.0
60.0
1.53
0.354
58.33
3.27
3.27
IT
• =
No data submitted

TAG SYMBOLS

ft s Above control limit
0 5
^	
Insufficient data
x =
Determined to be an outlier
li = Below control limit
-------
ESD-LV Performance Evaluation: Gross Alpha'
-Beta in Water, 31-Oct-1997
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
54.8
60.6
54X)
3.60
0.780
56.47
2.63
2.62

EW
50.1
50.6
49.4
0.60
0.142
50.03
0.40
0.39

EX
45.1
47.8
47.5
1.48
0.319
46.80
-0.72
-0.73

FE
41.4
41.3
40.4
0.55
0.118
41.03
-2.72
-2.73

FF
52.2
52.1
47.5
2.69
0.555
50.60
0.59
0.59

FJ









FL
50.7
37.5
55.2
9.20
3.078
47.80
-0.38
-0.38

FN
49.0
53.0
52.0
2.08
0.473
51.33
0.85
0.84

GQ
43.0
43.0
43.0
0.00
0.000
43.00
-2.04
-2.04

GZ
60.1
61.0
59.2
0.90
0.213
60.10
3.89
3.88
tr
HE
41.0
39.8
39.1
0.96
0.224
39.97
-3.09
-3.09
u
HI
48.9
50.3
50.3
0.81
0.165
49.83
0.33
0.32

HK
55.5
57.5
54.2
1.66
0.390
55.73
2.37
2.37

HL
49.0
50.4
49.0
0.81
0.165
49.47
0.20
0.20

HP









I
45.1
50.3
48.7
2.66
0.614
48.03
-0.29
-0.30

ID
58.0
44.7
54.4
6.88
2.088
52.37
1.21
1.20

IU
52.0
48.0
46.0
3.06
0.709
48.67
-0.08
-0.08
...
JE
45.1
44.6
40.5
2.52
0.543
43.40
-1.90
-1.91

JG
48.8
48.7
49.7
0.55
0.118
49.07
0.06
0.06

JM
50.8
49.2
46.8
2.01
0.473
48.93
0.02
0.01

JN
48.4
47.9
53.9
3.33
0.709
50.07
0.41
°-40

JP








•
JQ
33.7
44.9
46.3
6.91
1.930
41.63
-2.51
-2.52

JS
51.3
54.2
47.9
3.15
0.744
51.13
0.78
0.77

JY
43.7
44.8
45.3
0.82
0.189
44.60
-1.48
-1.49

K
42.9
43.2
43.0
0.15
0.035
43.03
-2.03
-2.03

KE
39.2
41.9
35.6
3.16
0.744
38.90
-3.46
-3.46

KH
43.7
47.7
50.5
3.42
0.803
47.30
-0.55
-0.55

KT
60.0
75.0
70.0
7.64
2.470
68.33
6.74
6.73
tr
KX
54.0
48.0
52.0
3.06
0.709
51.33
0.85
0.84

L
53.1
48.3
48.1
2.83
0.591
49.83
0.33
0.32

LE
42.7
46.3
47.7
2.58
0.591
45.57
-1.15
-1.15

LF
43.0
44.0
56.0
7.23
2.020
47.67
-0.42
-0.43

LL
44.8
43.3
41.8
1.50
0.354
43.30
-1.93
-1.94

LE
59.0
59.0
59.3
0.17
0.035
59.10
3.54
3.53
tr
LT
55.8
50.7
48.4
3.79
0.874
51.63
0.95
0.95

M








•
MF
56.0
57.4
61.1
2.63
0.602
58.17
3.22
3.21
it
MV
38.4
49.3
46.9
5.73
1.548
44.87
-1.39
-1.40

MX
36.7
42.6
43.2
3.59
0.768
40.83
-2.79
-2.79

N








•
NA
53.8
52.5
54.3
0.93
0.213
53.53
1.61
1.61

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

-------
((	
13/
16 ESD-LV Performance Evaluation: Gross Alpha-Beta in Water, 31-Oct-1997
	^
Gross Beta







\
Lab
Res. 1


Exper.
Rng anal

Normalized deviation

Res. 2
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
NB
26.5
30.1
33.6
3.55
0.839
30.07
-6.52
-6.52

NH
54.0
53.0
52.0
1.00
0.236
53.00
1.43
1.42

NJ
49.4
46.7
50.5
1.96
0.449
48.87
-0.01
-0.01

NK
41.5
50.9
39.8
5.98
1.593
44.07
-1.67
-1.67

NO
47.0
49.0
51.0
2.00
0.473
49.00
0.04
0.03

NP
44.4
41.4
49.9
4.31
1.008
45.23
-1.26
-1.27

O
51.0
50.6
51.3
0.35
0.083
50.97
0.72
0.72

OA








¦ • *
OB
48.5
50.5
50.8
1.25
0.272
49.93
0.36
0.36

OF
48.5
45.8
44.4
2.08
0.484
46.23
-0.92
-0.92

OS
50.8
50.0
50.0
0.46
0.095
50.27
0.48
0.47

OT
53.5
50.9
51.7
1;33
0.307
52.03
1.09
1.09

OX








•
OY








' • >
P
53.3
48.3
51.3
2.52
0.591
50.97
0.72
0.72

PA
65.9
62.0
61.4
2.44
0.532
63.10
4.92
4.92
rr
PB
48.5
45.2
46.6
1.66
0.390
46.77
-0.73
-0.74

PD
765
101.6
10L2
14.38
4.743
93.10
15 32
15.31

PG
54.4
51.1
52.0
1.71
0.390
52.50
1.25
1.25

PM
53.8
52.6
49.6
2.16
°:496
52.00
1.08
1.07

PQ









Q
49.1
50.4
52.7
1.82
0.425
50.73
0.64
0.64

QM
40.8
52.3
45.4
5.79
1.683
46.17
-0.94
-0.95

QP
50.4
68.1
54.6
9.25
3.078
57.70
3.05
3.05
tl
QQ
57.1
51.8
56.4
2.88
0.626
55.10
2.15
2.15

QT
49.3
53.8
53.1
2.42
0.532
52.07
1.10
1.10

QU
46.7
40.0
43.8
3.36
0.791
43.50
-1.87
-1.87

QW
37.3
44.0
45.3
4.29
0.945
42.20
-2.32
-2.32

QX
51.4
51.0
53.1
1.12
0.248
51.83
1.02
1.02

QZ
41.8
42.1
40.7
0.74
0.165
41.53
-2.55
-2.55

R
51.6
54.0
54.6
1.59
0.354
53.40
1.56
1.56

RB
57.8
53.5
54.1
2.33
0.508
55.13
2.16
2.16

RD
61.5
43.2
44.9
10.11
3.213
49.87
0.34
0.33

RG
55.8
55.8
55.8
0.02
0.000
55.80
2.40
2.39

RI
46.5
53.1
52.6
3.67
0.780
50.73
0.64
0.64

RK








•
RR
56.0
55.0
57.0
1.00
0.236
56.00
2.46
2.46

RZ
47.6
47.6
50.0
1.39
0.284
48.40
-0.17
-0.17

S
56.8
52.6
53.9
2.15
0.496
54.43
1.92
1.92

sc
41.7
44.7
49.8
4.10
0.957
45.40
-1.21
-1.21

SD
46.7
54.8
50.8
4.05
0.957
50.77
0.65
0.65

SF
52.0
49.0
55.0
3.00
0.709
52.00
1.08
1.07

SG
41.8
49.4
46.0
3.81
0.898
45.73
-1.09
-1.10

SI
45.1
45.4
45.9
0.40
0.095
45.47
-1.18
-1.19

SL








•
• =
No data submitted

TAG SYMBOLS

IT = Above control limit
0 s
V	
Insufficient data
x =
Determined to be an outlier
Ji = Below control limit
-------
ESD-LV Performance Evaluation: Gross Alpha-Beta in Water, 31-Oct-1997 14 / 16
Gross Beta
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known)
N
Tag
SM
46.0
47.4
46.0
0.81
0.165
46.47
-0.84
-0.84

SN
48.1
48.0
46.0
1.18
0.248
47.37
-0.53
-0.53

SO
47.6
48.4
46.6
0.90
0.213
47.53
-0.47
-0.47

SR
55.1
52.9
52.4
1.44
0.319
53.47
1.59
1.58

ss
43.7
49.3
49.2
3.20
0.662
47.40
-0.51
-0.52

su
46.4
51.7
48.4
2.68
0.626
48.83
-0.02
-0.02

sv
46.8
37.5
40.3
4.77
1.188
41.53
-2.55
-2.55

sx
61.4
66.7
66.1
2.90
0.626
64.73
5.49
5.48
ft
sz
50.1
53.5
48.5
2.55
0.591
50.70
0.63
0.62

T
42.5
45.1
49.8
3.70
0.862
45.80
-1.07
-1.07

TD
44.0
42.3
38.9
2.60
0.602
41.73
-2.48
-2.48

Stl;









TN
37.4
38.8
35.8
1.50
0.354
37.33
-4.00
-4.01
r
TO
52.3
49.9
39.6
6.75
1.953
47.27
-0.56
-0.57

TQ
52.7
47.8
46.7
3.19
0.709
49.07
0.06
0.06

TW
23.1
30.0
35.8
6.36
1.953
29.63
-6.67
-6.67

fix"








• •
TY
50.4
50.3
50.6
0.15
0.035
50.43
0.54
0.53

U
49.0
49.8
47.7
1.06
0.248
48.83
-0.02
-0.02

UA
59.0
61.6
60.0
1.31
0.307
60.20
3.92
3.91
a
UP
51.2
51.2
53.4
1.27
0.260
51.93
1.06
1.05

UQ
51.4
52.2
50.8
0.70
0.165
51.47
0.89
0.89

UY









VA








v.;
vc









VH
56.1
51.2
57.3
3.23
0.721
54.87
2.07
2.07

VI
3;2

3.6 '
0^21
0:047
3.37
-15.77
-15.77 '
X
VJ
47.5
46.2
50.6
2.26
0.520
48.10
-0.27
-0.28

VO
50.8
51.3
46.9
2.41
0.520
49.67
0.27
0.27

VT









W
44.0
46.0
48.0
2.00
0.473
46.00
-1.00
-1.00

WE
58.5
53.0
52.3
3.40
0.732
54.60
1.98
1.97

WH
48.0
45.6
49.2
1.83
0.425
47.60
-0.44
-0.45

wjr








-V
WN
28.4
32.7
32.1
2.33
0.508
31.07
-6.17
-6.18

WO









WP









WR
46.7
48.1
48.3
0.87
0.189
47.70
-0.41
-0.42

WS









WU









WW
44.6
44.5
57.8
7.65
2.088
48.97
0.03
0.02

WX









X
49.4
43.4
43.7
3.38
0.709
45.50
-1.17
-118

XB
*








XC









• =
U-
No data submitted
Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
1! = Above control limit
•W = Below control limit
-------
'
15 / 16 ESD-LV Performance Evaluation: Gross Alpha-Beta in Water, 31-Oct-1997
Gross Beta
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
XD







-

XF
52.8
53.0
50.8
1.22
0.260
52.20
1.15
1.14

XI








- •
XJ
19.6
27.7
16.9;
5.64
1.525
21.37
-9.53
-9.54
* x
XK
50.2
54.8
52.1
2.31
0.543
52.37
1.21
1.20

XL
50.4
47.4
51.2
2.00
0.449
49.67
0.27
0.27

XM
34.3
33.9
34.0
0.21
0.047
34.07
-5.13
-5.14
u
XN
48.2
46.6
45.9
1.18
0.272
46.90
-0.69
-0.69

Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
3.37
X
VI
45.50

X
48.53

DD
20.00
X
CA
45.57

LE
48.67

IU
21.37
X
XJ
45.60

BH
48.83

U
29.63
U
TW
45.73

SG
48.83

su
30.07
U
NB
45.80

T
48.87

NJ
31.07
u
WN
46.00

W
48.87

E
34.07
It
XM
46.13

AU
48.93

JM
34.57
li
CO
46.17

QM
48.97

WW
36.97
li
CX
46.23

OF
48.97

C
37.33
u
TN
46.47

SM
49.00

NO
38.90

KE
46.57

AJ
49.07

TQ
39.87
11
DZ
46.77

PB
49.07

JG
39.97
11
HE
46.77

BC
49.10

AZ
40.83

MX
46.80

EX
49.30

BM
41.03

FE
46.90

XN
49.47

HL
41.53

SV
47.00

EL
49.50

DB
41.53

QZ
47.07

BO
49.50

AF
41.63

JQ
47.27

TO
49.67

XL
41.73

TD
47.30

KH
49.67

VO
42.20

QW
47.37

SN
49.73

AP
43.00

GQ
47.40

SS
49.83

L
43.03

K
47.53

SO
49.83

HI
43.30

LL
47.60

WH
49.83

BS
43.40

-------
ESD-LV Performance Evaluation: Gross Alpha-Beta in Water, 31-Oct-1997 16 / 16
Gross Beta
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag Lab
Average
Tag
Lab
50.73

RI
52.07
QT
54.87

VH
50.73

Q
52.20
XF
55.10

QQ
50.77

SD
52.37
XK
55.13

RB
50.97

P
52.37
ID
55.73

HK
50.97

O
52.50
PG
55.80

RG
51.13

DR
52.60
DE
56.00

RR
51.13

JS
53.00
NH
56.47

EV
51.30

AW
53.00
DO
57.70
ft
QP
51.33

KX
53.27
EB
58.17
ft
MF
51.33

FN
53.40
R
58.33
ft
EO
51.47

UQ
53.43
D
59.10
ft
LR
51.63

LT
53.47
AR
60.10
ft
GZ
51.83

QX
53.47
SR
60.20
it
UA
51.93

UP
53.53
NA
60.40
ir
CP
51.93

BA
54.30
AH
63.10
it
PA
52.00

SF
54.43
S
64.73

SX
52.00

PM
54.47
AK
68.33
ft
KT
52.03

OT
54.60
WE
72.83
X
BN





93.10
X
PD
% responding labs

Frequency distribution



-i—
-6
% responding labs
10-—	5	
—. T -lyllJllllf.-B T-
	¥-
-4	-2	0	+2
Normalized deviation of the mean from the known value
Frequency distribution
+4
+6
	-j-iMm J
0	+2
	J
-2	0	+2	+4
Normalized deviation of the mean from the grand average
*t—
-6
+6
• = No data submitted TAG SYMBOLS ft = Above control limit
0 s Insufficient data	x = Determined to be an outlier	-U = Below control limit
-------
United States
Environmental Protection
Agency
Office of Research and
Development
Washington, DC 20460
EPA/600/R-98/008
January 1998
SERA Gamma in Water
Performance Evaluation
Study
A Statistical Evaluation of the
November 7, 1997 Data
006EC898 caMXM
-------
Gamma in Water
Performance Evaluation Study
November 7, 1997
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 7,1997.
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: Gamma in Water, 7-Nov-1997	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 n 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 nnH 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.
-------
2/37	E8D-LV Performance Evaluation: Gamma in Water, 7-Nov-1997
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 repultf 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 gTand 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-600/4-81-004], available from Patricia Honsa, ESD-LV, 702/798-2141.
-------
ESD-LV Performance Evaluation: Gamma in Water, 7-Nov-1997
3/37
Cobalt-60	Statistical Summary	171 Participants
The known value of this nuclide is 27.0 pCI/1 with an expected precision of 5.0; the control limits
are 18.3 to 35.7; the warning regions are 18.3 to 21.2 and 32.8 to 35.7
28(16.4 %) Failed to respond	_	, 134(78.4 %} Within all limits
*	\fx
•	\l\
•	x N
•	NJ
» ^Tv,.
6(3.5 %) Outliers •'
Statistic
V
T I
Respondents
3(1.8 %) In warning zone
but within control
Non-outliers
Mean
31.15
Grand Avg 27.55
Std. Dev.
37.80
2.15
Variance
1428.85
4.60
% Coef. of Var.
121.34
7.79
% deviation of mean from known value
15.38
2.02
Norm. dev. of mean from known value
0.11
0.25
Median
27.67
27.33
% deviation of median from known value
2.47
1.23
Norm. dev. of median from known value
0.02
0.16
6(4.2 %) More than 3 norm. S.D.
3(2.1 %) Between 2 end 3 norm. S.D
• 116(81.1 %) Within 1 norm. S.D.
of known value
18(12.6 %) Between 1 and 2 norm. S.D.
-------
[4/37
ESD-LV Performance Evaluation: finmitm in
7-Nov-1997
J
Cobalt-60







Lab
Rea. 1
Bee. 2
Res. 3
Exper.
Rnganal

Normalized deviation
Sigma
(R + SR)
Average
(grand-avg)
f-known) Tag
A
26.0
26.0
26.0
0.00
0.000
26.00
-0.54
-0.35
AE
27.0
29.0
28.0
1.00
0.236
28.00
0.16
0.35
AF
31.0
23.0
28.0
4.04
0.945
27.33
-0.07
0.12
AH
22.0
28.0
27.0
3.21
0.709
25.67
-0.65
-0.46
AI






- *
AJ
27.0
29.0
26.0
1.53
0.354
27.33
-0.07
0.12
AK
27.0
29.0
28.0
1.00
0.236
28.00
0.16
0.35
AL
33.0
28.0
28.0
2.89
0.591
29.67
0.73
0.92
AP







• -
AU
27.0
27.0
26.0
0.58
0.118
26.67
-0.30
-0.12
AW
28.0
28.0
28.0
0.00
0.000
28.00
0.16
0.35
AY
27.0
27.0
25.0
1.15
0.236
26.33
-0.42
-0.23
AZ
27.0
26.0
29.0
1.53
0.354
27.33
-0.07
0.12
BA
32.0
29.0
29.0
1.73
0.354
30.00
0.85
1.04
BB
28.0
30.0
26.0
2.00
0.473
28.00
0.16
0.35
BC
27.0
30.0
27.0
1.73
0.354
28.00
0.16
0.35
B G








BH
29.0
31.0
28.0
1.53
0.354
29.33
0.62
0.81
BK
27.0
27.0
27.0
0.00
0.000
27.00
-0.19
0.00
BL
26.0
29.0
27.0
1.53
0.354
27.33
-0.07
0.12
BM
31.0
30.0
27.0
2.08
0.473
29.33
0.62
0.81
BN
27.0
29.0
27.0
1.15
0.236
27.67
0.04
0.23
BO
27.0
27.0
28.0
0.58
0.118
27.33
-0.07
0.12
C
26.0
27.0
27.0
0.58
0.118
26.67
-0.30
-0.12
CA
31.0
29.0
25.0
3.06
0.709
28.33
0.27
0.46
CC







•
CE
27.0
30.0
31.0
2.08
0.473
29.33
0.62
0.81
CJ
25.0
24.0
26.0
1.00
0.236
25.00
-0.88
-0.69
CO
28.0
30.0
32.0
2.00
0.473
30.00
0.85
1.04
CP
32.0
30.0
30.0
1.15
0.236
30.67
1.08
1.27
cs
32.0






0
cx
26.0
25.0
30.0
2.65
0.591
27.00
-0.19
0.00
D
27.0
28.0
26.0
1.00
0.236
27.00
-0.19
0.00
DD
28.0
24.0
28.0
2.31
0.473
26.67
-0.30
-0.12
DE
27.0
28.0
28.0
0.58
0.118
27.67
0.04
0.23
DH
27.0
27.0
27,0
0.00
0.000
27.00
-0.19
0.00
DO
31.0
28.0
28.0
1.73
0.354
29.00
0.50
0.69
DR
27.0
27.0
27.0
0.00
0.000
27.00
-0.19
0.00
DT
30.0
28.0
25.0
2.52
0.591
27.67
0.04
0.23
DZ








E
27.0
29.0
28.0
1.00
0.236
28.00
0.16
0.35
EA







•
EB
32.0
32.0
32.0
0.00
0.000
32.00
1.54
1.73
EL
28.0
28.0
28.0
0.00
0.000
28.00
0.16
0.35
EW
25.0
29.0
' 27.0
2.00
0.473
27.00
-0.19
0.00
• S
No data submitted

TAG SYMBOLS

ft s Above control limit
in
IS
Insufficient data
X 5
Determined to be an outlier
U s Below control limit _
-------
'
E8D-LV Performance Evaluation
: Gamma in Water,
7-Nov-1897
5/37
Cobalt-60







Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
EX
25.0
25.0
22.0
1.73
0.354
24.00
-1.23
-1.04
FE
25.0
21.0
21.0
2.31
0.473
22.33
-1.81
-1.62
FJ
28.0
29.0
25.0
2.08
0.473
27.33
-0.07
0.12
FL
26.0
27.0
26.0
0.58
0.118
26.33
-0.42
-0.23
GI
26.0
27.0
26.0
0.58
0.118
26.33
-0.42
-0.23
GL
26.0
26.0
28.0
1.15
0.236
26.67
-0.30
-0.12
GQ
27.0
27.0
27.0
0.00
0.000
27.00
-0.19
0.00
HE
25.0
27.0
24.0
1.53
0.354
25.33
-0.77
-0.58
m
29.0
29.0
27.0
1.15
0.236
28.33
0.27
0.46
HK
28.0
28.0
28.0
0.00
0.000
28.00
0.16
0.35
HL
27.0
29.0
29.0
1.15
0.236
28.33
0.27
0.46
HP:







•
I
28.0
27.0
29.0
1.00
0.236
28.00
0.16
• '
0.35
IU
J
26.0
26.0
26.0
0.00
0.000
26.00
-0.54
-0.35
JE
32.0
30.0
31.0
1.00
0.236
31.00
1.20
« '
1.39
JG








JM
27.0
28.0
28.0
0.58
0.118
27.67
0.04
0.23
JS
27.0
27.0
28.0
0.58
0.118
27.33
-0.07
0.12
JY
28.0
29.0
28.0
0.58
0.118
28.33
0.27
0.46
K
29.0
26.0
24.0
2.52
0.591
26.33
-0.42
-0.23
KH
28.0
28.0
28.0
0.00
0.000
28.00
0.16
0.35
KL
28.0
28.0
26.0
1.15
0.236
27.33
-0.07
0.12
KX
27.0
29.0
28.0
1.00
0.236
28.00
0.16
0.35
L
27.0
23.0
28.0
2.65
0.591
26.00
-0.54
-0.35
LE
28.0
33.0
36.0
4.04
0.945
32.33
1.66
1.85
LF
29.0
31.0
30.0
1.00
0.236
30.00
0.85
1.04
LR
25.0
26.0
28.0
1.53
0.354
26.33
-0.42
-0.23
LT
26.0
25.0
26.0
0.58
0.118
25.67
-0.65
-0.46
M
26.0
24.0
24.0
1.15
0.236
24.67
-1.00
-0.81
MP
26.0
27.0
28.0
1.00
0.236
27.00
-0.19
0.00
MT
26.0
26.0
26.0
0.00
0.000
26.00
-0.54
-0.35
MV
28.0
27.0
27.0
0.58
0.118
27.33
-0.07
0.12
MX
28.0
28.0
28.0
0.00
0.000
28.00
0.16
0.35
N
29.0
28.0
29.0
0.58
0.118
28.67
0.39
0.58
NH
24.0
25.0
26.0
1.00
0.236
25.00
-0.88
-0.69
NJ
26.0
27.0
27.0
0.58
0.118
26.67
-0.30
-0.12
NK
27.0
25.0
23.0
2.00
0.473
25.00
-0.88
-0.69
NO
28.0
39.0
47.0
9.54
3.371
38.00
3.62
3.81 x
NP
27.0
27.0
28.0
0.58
0.118
27.33
-0.07
0.12
O
30.0
30.0
29.0
0.58
0.118
29.67
0.73
0.92
OA
27.0
26.0
26.0
0.58
0.118
26.33
-0.42
-0.23
OB
28.0
28.0
28.0
0.00
0.000
28.00
0.16
0.35
OM
24.0
23.0
19.0
2.65
0.591
22.00
-1.92
-1.73
• =
No data submitted

TAG SYMBOLS

IT s Above control limi
0 a
Insufficient data
x ~
Determined to be an outlier
s Below control limi

-------
6/37
\.
ESD-LV Performance Evaluation: Gamma in Water,
7-Nov-1997


Cobalt* 60







\
Lab
Res. 1
Res. 2
Re b. 3
Exper.
Rng anal

Normalized deviation

Sigma
(R + SR)
Average
(grand-avg)
("known) Tae
OT
23.0
25.0
28.0
2.52
0.591
25.33
-0.77
-0,58

P
27.0
31.0
30.0
2.08
0.473
29.33
0.62
0.81

PB
28.0
30.0
28.0
1.15
0.236
28.67
0.39
0.58

PD
27.0
32.0
28.0
2.65
0.591
29.00
0.50
0.69

PE







+
PM
31.0
28.0
28.0
1.73
0.354
29.00
0.50
0.69

PQ








PIJ








•
PW
25.0
26.0
26.0
0.58
0.118
25.67
-0.65
-0.46

PX
27.0
21.0
27.0
3.46
0.709
25.00
-0.88
-0.69

Q
30.0
27.0
30.0
1.73
0.354
29.00
0.50
0.69

QM
30.0
29.0
28.0
1.00
0.236
29.00
0.50
0.69

QP
28.0
26.0
24.0
2.00
0.473
26.00
-0.54
-0.35

QT
28.0
29.0
28.0
0.58
0.118
28.33
0.27
0.46

QU
29.0
27.0
28.0
1.00
0.236
28.00
0.16
0.35

QW
28.0
26.0
28.0
1.15
0.236
27.33
-0.07
0.12

QX
17.0
20.0
19.0
1.53
0.354
18.67
-3.08
-2.89

QZ









R
28.0
28.0
29.0
0.58
0.118
28.33
0.27
0.46

BH









RK








•
RO
27.0
29.0
27.0
1.15
0.236
27.67
0.04
0.23

RR








•
RU








•
RX
26.0
28.0
27.0
1.00
0.236
27.00
-0.19
0.00

RZ
28.0
27.0
29.0
1.00
0.236
28.00
0.16
0.35

S
26.0
25.0
26.0
0.58
0.118
25.67
-0.65
-0.46

sc
25.0
26.0
26.0
0.58
0.118
25.67
-0.65
-0.46

SD
26.0
27.0
26.0
0.58
0.118
26.33
-0.42
-0.23

SF
27.0
26.0
26.0
0.58
0.118
26.33
-0.42
-0.23

SI
31.0
27.0
29.0
2.00
0.473
29.00
0.50
0.69

SM
25.0
28.0
29.0
2.08
0.473
27.33
-0.07
0.12

SN
27.0
25.0
26.0
1.00
0.236
26.00
-0.54
-0.35

SR
30.0
29.0
25.0
2.65
0.591
28.00
0.16
0.35

ss
28.0
28.0
28.0
0.00
0.000
28.00
0.16
0.35

sv
32.0
31.0
29.0
1.53
0.354
30.67
1.08
1.27

sx
27.0
26.0
29.0
1.53
0.354
27.33
-0.07
0.12

sz
26.0
27.0
27.0
0.58
0.118
26.67
-0.30
-0.12

T
27.0
27.0
26.0
0.58
0.118
26.67
-0.30
-0.12

TC
27.0
27.0
24.0
1.73
0.354
26.00
-0.54
-0.35

TD
34.0
31.0
33.0
1.53
0.354
32.67
1.77
1.96

TO
25.0
23.0
23.0
1.15
0.236
23.67
-1.34
-1.15

TQ
25.0
26.0
26.0
0.58
0.118
25.67
-0 65
-0.46

TR
59.0
60.0
59.0
0.58
0.118
59.33
11.01
11.20
X
TS








~
• =
No data submitted

TAG SYMBOLS

IT s Above control limit
in
Insufficient data
x =
Determined to be an outlier
^ s Below control limit
-------
ESD-LV Performance Evaluation: Gamma in Water, 7-Nov-1997
7/37
Cobalt-60
Lab
Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known)
JJR t
14m
JilS.OJ"
;14.0
0.58
0.118
14.33:
&68l

UR
> i	
25.0
25.0
30.0
2-89
0.591
26.67
-0.30
-0.12
uv







ux
26.0
27.0
28.0
1.00
0.236
27.00
-0.19
0.00
UY
27.0
31.0
28.0
2.08
0.473
28.67
0.39
0.58
VA
33.0
32.0
34.0
1.00
0.236
33.00
1.89
2.08
VC;







VE:
,46410?
506^0
462.0
24.27
8/T71
47100
I55i70
A65.8&
VH
29.0
28.0
29.0
0.58
0.118
28.67
0.39
0.58
VI
29.0
28.0
29.0
0.58
0.118
28.67
0.39
0.58
VM-
38.0?
38.0
J38.0
0.00
0.000
38»00
3:62
3.81
VO
21.0
21.0
25.0
2.31
0.473
22.33
-1.81
-1.62
vs
33.0
30.0
34.0
2.08
0.473
32.33
1.66
1.85
w
26.0
27.0
28.0
1.00
0.236
27.00
-0.19
0.00
WD
52.0
68^0
63.0
3.21
0.709
54.33
9i28
9.47;
wr








WJ
29.0
30.0
26.0
2.08
0.473
28.33
0.27
0.46
WK
24.0
25.0
24.0
0.58
0.118
24.33
-1.11
-0.92
wo
28.0
24.0
26.0
2.00
0.473
26.00
-0.54
-0.35
WR
28.0
30.0
34.0
3.06
0.709
30.67
1.08
1.27
ws
27.0
28.0
27.0
0.58
0.118
27.33
-0.07
0.12
wv








WW
27.0
25.0
31.0
3.06
0.709
27.67
0.04
0.23
WX








X
34.0
36.0
34.0
1.15
0.236
34.67
2.47
2.66
XA
27.0
31.0
29.0
2.00
0.473
29.00
0.50
0.69
XB
32.0
25.0
37.0
6.03
1.795
31.33
1.31
1.50
xc
24.0
24.0
28.0
2.31
0.473
25.33
-0.77
-0.58
XD
29.0
30.0
29.0
0.58
0.118
29.33
0.62
0.81
XF
27.0
26.0
30.0
2.08
0.473
27.67
0.04
0.23
XG
30.0
3L0
30.0
0.58
0.118
30.33
0.97
1.15
XI







-
XK
30.0
27.0
32.0
2.52
0.591
29.67
0.73
0.92
XO








Y
27.0
29.0
29.0
1.15
0.236
28.33
0.27
0.46
Average
Data sorted by Laboratory Average
Tag	Lab Average	Tag	Lab Average
Tag
X.v

Lab
14.33
18.67
22.00
22.33
22.33
23.67
UP
QX
OM
VO
FE
TO
24.00
24.33
24.67
25.00
25.00
25.00
EX
WK
M
PX
NK
NH
25.00
25.33
25.33
25.33
25.67
25.67
CJ
xc
OT
HE
TQ
SC
• s No data submitted
0 s Insufficient data
TAG SYMBOLS
x = Determined to be an outlier
ft = Above control limit
JJ. = Below control limit
-------
8/37
ESD-LV Performance Evaluation: Gamma in Water, 7-Nov-1997
Cobalt-60
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
25.67

S
27.33

SM
28.33

HI
25.67

PW
27.33

QW
28.33

CA
25.67

LT
27.33

NP
28.67

VI
25.67

AH
27.33

MV
28.67

VH
26.00

WO
27.33

KL
28.67

UY
26.00

TC
27.33

JS
28.67

PB
26.00

SN
27.33

FJ
28.67

N
26.00

QP
27.33

BO
29.00

XA
26.00

MT
27.33

BL
29.00

SI
26.00

L
27.33

AZ
29.00

QM
26.00

IU
27.33

AJ
29.00

Q
26.00

A
27.33

AF
29.00

PM
26.33

SF
27.67

XF
29.00

PD
26.33

SD
27.67

WW
29.00

DO
26.33

OA
27.67

RO
29.33

XD
26.33

LB
27.67

JM
29.33

P
26.33

K
27.67

DT
29.33

CE
26.33

GI
27.67

DE
29.33

BM
26.33

FL
27.67

BN
29.33

BH
26.33

AY
28.00

SS
29.67

XK
26.67

UR
28.00

SR
29.67

O
26.67

T
28.00

RZ
29.67

AL
26.67

SZ
28.00

QU
30.00

LF
26.67

NJ
28.00

OB
30.00

CO
26.67

GL
28.00

MX
30.00

BA
26.67

DD
28.00

KX
30.33

XG
26.67

C
28.00

KH
30.67

WR
26.67

AU
28.00

I
30.67

sv
27.00

W
28.00

HK
30.67

CP
27.00

UX
28.00

EL
31.00

JE
27.00

RX
28.00

E
31.33

XB
27.00

MP
28.00

BC
32.00

EB
27.00

GQ
28.00

BB
32.33

vs
27.00

EW
28.00

AW
32.33

LE
27.00

DR
28.00

AK
32.67

TD
27.00

DH
28.00

AE
33.00

VA
27.00

D
28.33

Y
34.67

X
27.00

CX
28.33

WJ
38.00
X
VM
27.00

BK
28.33

R
38.00
X
NO
27.33

WS
28.33

QT
54.33
X
WD
27.33

sx
28.33

JY
59.33
X
TR



28.33

HL
477.00
X
VE
• s No data submitted.
0 = Insufficient data
TAG SYMBOLS
x s Determined to be an outlier
ft s Above control limit
¦II = Below control limit j
-------
ESD-LV Performance Evaluation: Gamma in Water, 7-Nov-1997
9/37
Cobalt-60
% responding labs	Frequency distribution
10-
-i	1	-—i	p°	1 ¦¦		1	r1
•6	-4	-2	0	+2	+4	+6
Normalized deviation of the mean from the known value
% responding labs	Frequency distribution
10-
-i	1—-	1	f	T* ¦¦fUllflBBBifi¦¦¦*, ¦	,	¦—,	,	pfil
-6	-4	-2	0	+2	+4	+6
Normalized deviation of the mean from the grand average
-------
-
ESD-LV Performance Evaluation: Gamma in Water, 7-Nov-1997	10 / 37
v	_ 		
r	'	—		1	1 -
Zinc-65	Statistical Summary	171 Participants
The known value of this nuclide is 75.0 pCi/1 with an expected precision of 8.0; the control limits
are 61.1 to 88.9; the warning regions are 61.1 to 65.7 and 84.3 to 88.9
Statistic		Respondents	Non-outliers
Mean
87.87
Grand Avg 78.11
Std. Dev.
106.14
5.27
Variance
11265.43
27.77
% Coef. of Var.
120.79
6.75
% deviation of mean from known value
17.16
4.15
Norm. dev. of mean from known value
0.12
0.59
Median
78.33
78.00
% deviation of median from known value
4.44
4.00
Norm. dev. of median from known value
0.03
0.57
-------
s'r	- 		. .. 	 ¦	. _7 ¦	" = " — ~	¦- 			¦-
11/37	ESD-LV Performance Evaluation: Gamma in Water, 7-Nov-1997
' "	- _ . — — —
Zinc-65
Lab
Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng final
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tag
A
77.0
74.0
76.0
1.53
0.222
75.67
-0.53
0.14
AE
79.0
79.0
78.0
0.58
0.074
78.67
0.12
0.79
AF
86.0
83.0
83.0
1.73
0.222
84.00
1.27
1.95
AH
71.0
89.0
90.0
10.69
1.767
83.33
1.13
1.80
AI







«
AJ
70.0
74.0
73.0
2.08
0.295
72.33
-1.25
-0.58
AK
90.0
87.0
88.0
1.53
0.222
88.33
2.21
2.89
AL
72.0
66.0
77.0
5.51
0.812
71.67
-1.40
-0.72
AP







•
AU
76.0
75.0
72.0
2.08
0.295
74.33
-0.82
-0.14
AW
80.0
83.0
83.0
1.73
0.222
82.00
0.84
1.52
AY
57.0
68.0
64.0
5.57
0.812
63.00
-3.27
-2.60
AZ
75.0
83.0
77.0
4.16
0.591
78.33
0.05
0.72
BA
79.0
86.0
80.0
3.79
0.517
81.67
0.77
1.44
BB
86.0
83.0
78.0
4.04
0.591
82.33
0.91
1.59
BC
76.0
79.0
72.0
3.51
0.517
75.67
-0.53
0.14
BO







•
BH
79.0
83.0
80.0
2.08
0.295
80.67
0.55
1.23
BK
80.0
79.0
81.0
1.00
0.148
80.00
0.41
1.08
BL
75.0
72.0
76.0
2.08
0.295
74.33
-0.82
-0.14
BM
80.0
81.0
80.0
0.58
0.074
80.33
0.48
1.15
BN
67.0
73.0
87.0
10.26
1.908
75.67
-0.53
0.14
BO
83.0
75.0
85.0
5.29
0.738
81.00
0.63
1.30
C
76.0
78.0
77.0
1.00
0.148
77.00
-0.24
0.43
CA
76.0
79.0
75.0
2.08
0.295
76.67
-0.31
0.36
CC







• ¦
CE
75.0
75.0
79.0
2.31
0.295
76.33
-0.38
0.29
CJ
72.0
74.0
67.0
3.61
0.517
71.00
-1.54
-0.87
CO
70.0
77.0
82.0
6.03
0.886
76.33
-0.38
0.29
CP
85.0
82.0
73.0
6.24
0.886
80.00
0.41
1.08
cs







•
cx
91.0
76.0
76.0
8.66
1.205
81.00
0.63
1.30
D
77.0
78.0
77.0
0.58
0.074
77.33
-0.17
0.51
DD
71.0
71.0
76.0
2.89
0.369
72.67
-1.18
-0.51
DE
81.0
85.0
87.0
3.06
0.443
84.33
1.35
2.02
DH
72.0
72.0
75.0
1.73
0.222
73.00
-1.11
-0.43
DO
89.0
89.0
88.0
0.58
0.074
88.67
2.29
2.96
DR
82.0
79.0
77.0
2.52
0.369
79.33
0.26
0.94
DT
83.0
83.0
85.0
1.15
0.148
83.67
1.20
1.88
DZ







•
E
77.0
76.0
76.0
0.58
0.074
76.33
-0.38
0.29
EA







•
EB
104.0
103.0
103.0
0.58
0.074
103.33
5.46
6.13 x
EL
75.0
77.0
74.0
1.53
0.222
75.33
-0.60
0.07
EW
79.0
72.0
75.0
3.51
0.517
75.33
-0.60
0.07
• = No data submitted	TAG SYMBOLS	ft = Above control linut
s 0 = Insufficient data	x = Determined to be an outlier	^ g Below control limit
-------
	
ESD-LV Performance Evaluation
: Gamma in Water,
7-Nov-1997
12/37
Zinc-65







Lab
Res. 1
Res. 2
Res. 3
Exper.
Sigma
RnganaJ
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tng
EX
81.0
72.0
67.0
7.09
1.064
73.33
-1.03
-0.36
FE
75.0
85.0
64.0
10.50
2.049
74.67
-0.75
-0.07
FJ
79.0
75.0
88.0
6.66
0.960
80.67
0.55
1.23
FL
82.0
81.0
72.0
5.51
0.738
78.33
0.05
0.72
GI
77.0
76.0
77.0
0.58
0.074
76.67
-0.31
0.36
GL
82.0
81.0
83.0
1.00
0.148
82.00
0.84
1.52
GQ
74.0
74.0
74.0
0.00
0.000
74.00
-0.89
-0.22
HE
73.0
68.0
68.0
2.89
0.369
69.67
-1.83
-1.16
HI
84.0
80.0
93.0
6.66
0.960
85.67
1.64
2.31
HK
80.0
80.0
80.0
0.00
0.000
80.00
0.41
1.08
HL
75.0
74.0
81.0
3.79
0.517
76.67
-0.31
0.36
HP
*nr







•
1
78.0
80.0
78.0
1.15
0.148
78.67
0.12
•
0.79
IU
J
JE
81.0
78.0
80.0
1.53
0.222
79.67
0.34
1.01
87.0
84.0
87.0
1.73
0.222
86.00
1.71
2.38
JO



C



'' «
JM
78.0
79.0
83.0
2.65
0.369
80.00
0.41
1.08
JS
80.0
79.0
79.0
0.58
0.074
79.33
0.26
0.94
JY
85.0
86.0
85.0
0.58
0.074
85.33
1.56
2.24
K
75.0
72.0
77.0
2.52
0.369
74.67
-0.75
-0.07
KH
89.0
87.0
88.0
1.00
0.148
88.00
2.14
2.81
KL
72.0
75.0
68.0
3.51
0.517
71.67
-1.40
-0.72
KX
79.0
74.0
73.0
3.21
0.443
75.33
-0.60
0.07
L
79.0
80.0
79.0
0.58
0.074
79.33
0.26
0.94
LE
81.0
77.0
89.0
6.11
0.886
82.33
0.91
1.59
LF
82.0
73.0
86.0
6.66
0.960
80.33
0.48
1.15
LR
81.0
77.0
74.0
3.51
0.517
77.33
-0.17
0.51
LT
77.0
77.0
79.0
1.15
0.148
77.67
-0.10
0.58 ,
M
75.0
73.0
75.0
1.15
0.148
74.33
-0.82
-0.14
MP
76.0
79.0
77.0
1.53
0.222
77.33
-0.17
0.51
MT
74.0
75.0
73.0
1.00
0.148
74.00
-0.89
-0.22
MV
81.0
79.0
79.0
1.15
0.148
79.67
0.34
1.01
MX
77.0
77.0
7 9.0
1.15
0.148
77.67
-0.10
0.58
N
76.0
74.0
77.0
1.53
0.222
75.67
-0.53
0.14
NH
78.0
78.0
80.0
1.15
0,148
78.67
0.12
0.79
NJ
79.0
79.0
79.0
0.00
0 000
79.00
0.19
0.87
NK
67.0
75.0
62.0
6.56
0.960
68.00
-2.19
-1.52
NO
103.0
118.0
143.0
20.21
4.721
121.33
9.36
10.03 x
NP
74.0
77.0
73.0
2.08
0.295
74.67
-0.75
-0.07
O
86.0
84.0
80.0
3.06
0.443
83.33
1.13
1.80
OA
78.0
78.0
80.0
1.15
0.148
78.67
0.12
0.79
OB







•
OM
74.0
74.0
78.0
2.31
0.295
75.33
-0.60
0.07
• =
No data submitted

TAG SYMBOLS

11 = Above control limit
0 =
Insufficient data
X S
Determined to be an outlier
JJ. s Below control limit
-------
({	
13/37

ESD-LV Performance Evaluation: Gamma in Water,
7-Nov-1997

=x
Zinc-65








>1
Lab

Res. 1
Res. 2
Res. 3
Exper.
Rng anal

Normalized deviation


Sigma
(R + SR)
Average
(grand-avg)
(known) Tatr
OT

69.0
65.0
79.0
7.21
1.064
71.00
-1.54
-0.87

P

69.0
78.0
75.0
4.58
0.665
74.00
-0.89
-0.22

PB

73.0
75.0
77.0
2.00
0.295
75.00
-0.67
0.00

PD

74.0
74.0
80.0
3.46
0.443
76.00
-0.46
0.22

PE








. • -
PM

76.0
81.0
83.0
3.61
0.517
80.00
0.41
1.08

PQ








•
PU









. •
PW

75.0
71.0
80.0
4.51
0.665
75.33
-0.60
0.07

PX

73.0
72.0
73.0
0.58
0.074
72.67
-1.18
-0.51

Q

72.0
78.0
76.0
3.06
0.443
75.33
-0.60
0.07

QM

79.0
87.0
79.0
4.62
0.591
81.67
0.77
1.44

QP

73.0
78.0
78.0
2.89
0.369
76.33
-0.38
0.29

QT

77.0
71.0
78.0
3.79
0.517
75.33
-0.60
0.07

QU

79.0
80.0
81.0
1.00
0.148
80.00
0.41
1.08

QW

83.0
81.0
79.0
2.00
0.295
81.00
0.63
1.30

QX

42.0
42.0
40.0
1.15
0.148
41.33
-7.96
-7.29
X
QZ









• •
R

80.0
82.0
79.0
1.53
0.222
80.33
0.48
1.15

RH










RK









•
RO

81.0
80.0
78.0
1.53
0.222
79.67
0.34
1.01

RR









•
RU









•
RX

78.0
77.0
79.0
1.00
0.148
78.00
-0.02
0.65

RZ

67.0
69.0
71.0
2.00
0.295
69.00
-1.97
-1.30

S

70.0
69.0
69.0
0.58
0.074
69.33
-1.90
-1.23

sc

78.0
74.0
73.0
2.65
0.369
75.00
-0.67
0.00

SD

81.0
80.0
81.0
0.58
0.074
80.67
0.55
1.23

SF

77.0
76.0
75.0
1.00
0.148
76.00
-0.46
0.22

SI

78.0
83.0
99.0
10.97
2.049
86.67
1.85
2.53

SM

78.0
87.0
79.0
4.93
0.665
81.33
0.70
1.37

SN

74.0
78.0
67.0
5.57
0.812
73.00
-1.11
-0.43

SR

71.0
76.0
72.0
2.65
0.369
73.00
-1.11
-0.43

ss

94.0
77.0
83.0
8.62
1.486
84.67
1.42
2.09

sv

85.0
75.0
85.0
5.77
0.738
81.67
0.77
1.44

sx

74.0
82.0
79.0
4.04
0.591
78.33
0.05
0.72

sz

75.0
77.0
75.0
1.15
0.148
75.67
-0.53
0.14

T

79.0
75.0
76.0
2.08
0.295
76.67
-0.31
0.36

TC

74.0
70.0
63.0
5.57
0.812
69.00
-1.97
-1.30

TD

80.0
68.0
76.0
6.11
0.886
74.67
-0.75
-0.07

TO

100.0
92.0
89.0
5.69
0.812
93.67
3.37
4.04
ft
TQ

78.0
77.0
77.0
0.58
0.074
77.33
-0.17
0.51

TR

138.0
118.0
127.0
10.02
1.908
127.67
10.73
11.40
X
TO









~
• =
No data submitted •

TAG SYMBOLS

11 = Above control limit
1®.
Insufficient data
X 2
Determined to be an outlier
U = Below control limit
.... ¦ - "7
-------
ESD-LV Performance Evaluation: Gamma in Water, 7-Nov-1997
14/37
Zinc-65








Lab
Res. 1
Res. 2
Res. 3
Exper.
Rng anal

Normalized deviation

Sigma
(R + SR)
Average
(grand-nvg) (known) Tnsr
Ux?
JJP
440,:
43.0r
41.0
1;53
0.222
4267
-7.67
-7 00
V •
"oc
UR
85.0
85.0
87.0
1.15
0.148
85.67
1.64
2.31

UV







0
UX
78.0
81.0
81.0
1.73
0.222
80.00
0.41
1.08

UY
81.0
80.0
78.0
1.53
0.222
79.67
0.34
1.01

VA
88.0
95.0
86.0
4.73
0.665
89.67
2.50
3.18
tr
VG







#
VE'V
1360.0
12220.0
14300
10&93
28.629
133867
272.49
2273 16
X
VH
72.0
79.0
76.0
3.51
0.517
75.67
-0.53
0.14

VI
78.0
90.0
91.0
7.23
0.960
86.33
1.78
2.45

VM
90.0
90.0
90.0
0.00
0.000
90.00
2.57
3.25
ft
VO
73.0
83.0
86.0
6.81
0.960
80.67
0.55
1.23

vs
74.0
72.0
78.0
3.06
0.443
74.67
-0.75
-0.07

w
75.0
72.0
79.0
3.51
0.517
75.33
-0.60
0.07

WD
183.0
157.0
160.0
3.00
0.443
i6o:oo
17.73
l8;40
X
WI








•
WJ
84.0
77.0
84.0
4.04
0.517
81.67
0.77
1.44

WK
76.0
75.0
68.0
4.36
0.591
73.00
-1.11
-0.43

WO
79.0
62.0
60.0
10.44
1.767
67.00
-2.41
-1.73

WR
70.0
76.0
76.0
3.46
0.443
74.00
-0.89
-0.22

WS
77.0
78.0
75.0
1.53
0.222
76.67
-0.31
0.36

WV








•
WW
109.0
78.0
85.0
16.26
3.455
90.67
2.72
3.39
ft
WX








' •
X
74.0
92.0
87.0
9.29
1.627
84.33
1.35
2.02

XA
87.0
83.0
29.0
32.39
7.252
66.33
-2.55
-1.88

XB
65.0
40.0
92.0
26.01
6.408
65.67
-2.69
-2.02

XC
82.0
74.0
81.0
4.36
0.591
79.00
0.19
0.87

XD
87.0
83.0
83.0
2.31
0.295
84.33
1.35
2.02

XF
86.0
84.0
81.0
2.52
0.369
83.67
1.20
1.88

XG
81.0
83.0
80.0
1.53
0.222
81.33
0.70
1.37

XI








. •
XK
87.0
79.0
82.0
4.04
0.591
82.67
0.99
1.66

XO








*
Y
74.0
81.0
80.0
3.79
0.517
78.33
0.05
0.72

Data sorted by Laboratory Average
Average
Tag
Lab
Average Tag
Lab
Average
Tag Lai
41.33
X
QX
68.00
NK
71.00
CJ
42.67
X
UP
69.00
TC
71.67
KI
63.00

AY
69.00
RZ
71.67
A1
65.67

XB
69.33
S
72.33
AJ
66.33

XA
69.67
HE
72.67
PX
67.00

WO
71.00
OT
72.67
DI
• s No data submitted

TAG SYMBOLS

ft
= Above control limii
0 = Insufficient data

x = Determined to be an outlier

= Below control limii
-------
115 / 37	ESD-LV Performance Evaluation: Gamma in Water, 7-Nov-1997
} ~ ' • •
Zinc-85
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
73.00

WK
76.67

HL
80.67
n
BH
73.00

SR
76.67

GI
81.00

QW
73.00

SN
76.67

CA
81.00

CX
73.00

DH
77.00

C
81.00

BO
73.33

EX
77.33

TQ
81.33

XG
74.00

WR
77.33

MP
81.33

SM
74.00

P
77.33

LR
81.67

WJ
74.00

MT
77.33

D
81.67

sv
74.00

GQ
77.67

MX
81.67

QM
74.33

M
77.67

LT
81.67

BA
74.33

BL
78.00

KX
82.00

GL
74.33

AU
78.33

Y
82.00

AW
74.67

vs
78.33

SX
82.33

LE
74.67

TD
78.33

FL
82.33

BB
74.67

NP
78.33

AZ
82.67

XK
74.67

K
78.67

OA
83.33

O
74.67

FE
78.67

NH
83.33

AH
75.00

SC
78.67

I
83.67

XF
75.00

PB
78.67

AE
83.67

DT
75.33

W
79.00

XC
84.00

AF
75.33

QT
79.00

NJ
84.33

XD
75.33

Q
79.33

L
84.33

X
75.33

PW
79.33

JS
84.33

I>E
75.33

OM
79.33

DR
84.67

SS
75.33

KX
79.67

UY
85.33

JY
75.33

EW
79.67

RO
85.67

UR
75.33

EL
79.67

MV
85.67

HI
75.67

VH
79.67

IU
86.00

JE
75.67

sz
80.00

UX
86.33

VI
75.67

N
80.00

QU
86.67

SI
75.67

BN
80.00

PM
88.00

KH
75.67

BC
80.00

JM
88.33

AK
75.67

A
80.00

HK
88.67

DO
76.00

SF
80.00

CP
89.67
ft
VA
76.00

PD
80.00

BK
90.00
ft
VM
76.33

QP
80.33

R
90.67
ft
WW
76.33

E
80.33

LF
93.67
ft
TO
76.33

CO
80.33

BM
103.33
X
EB
76.33

CE
80.67

VO
121.33
X
NO
76,67

WS
80.67

SD
127.67
X
TR
76.67

T
80.67

FJ
160.00
1336.67
X
X
WD
VE
• h No data submitted	TAG SYMBOLS	ft s Above control limit
0 = Insufficient data	x = Determined to be an outlier	V s Below control limit I
-------
ESD-LV Performance Evaluation: Gamma in Water, 7-Nov-1997	16 / 37
Zinc-65
% responding labs	Frequency distribution
10-
- T-~ ¦ ¦¦¦b|Ibi|||iBb? i t- t
-6	-4	"2	u	+2	+4
Normalized deviation of the mean from the known value
% responding labs	Frequency distribution	
10-
lll.llll
¦S	,	,	¦¦^¦¦¦ltllll|llll|llll, ¦ B-, -
-6	-4	-2	0+2+4	+6
Normalized deviation of the mean from the grand average
-------
ESD-LV Performance Evaluation: Gamma in Water, 7-Nov-1997
17/37
Cesium-134	Statistical Summary	171 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
29(17.0 %) Failed to respond «.	• 137(80.1 %) Within all limits
Nv
\|v
4(2.3 %) Outliers •'
Statistic
% S
I
Respondents
1 (0.6 %) In warning zone
but within control
Non-outliers
Mean
11.50
Grand Avg 9.51
Std. Dev.
14.05
1.55
Variance
197.39
2.40
% Coef. of Var.
122.17
16.28
% deviation of mean from known value
15.00
-4.93
Norm. dev. of mean from known value
0.11
-0.32
Median
9.67
9.33
% deviation of median from known value
-3.33
-6.67
Norm. dev. of median from known value
-0,02
-0.43
4(2.8 %) More than 3 norm. S.D.
1(0.7 %) Between 2 and 3 norm. S.D.
; 127(89.4 %) Within 1 norm. S.D.
of known value
10(7.0 %) Between 1 and 2 norm. S.D.
-------
(, -
18/37
ESD-LV Performance Evaluation: Gamma in Water,
7-Nov-1997
	^
Cesium-134






	
Lab
Res. 1
Res. 2
Res. 3
Exper.
Rng anal

Normalized deviation
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
A
10.0
10.0
10.0
0.00
0.000
10.00
0.17
0.00
AE
9.0
11.0
9.0
1.15
0.236
9.67
0.06
-0.12
AF
8.0
7.0
8.0
0.58
0.118
7.67
-0.64
-0.81
AH
13.0
10.0
10.0
1.73
0.354
11.00
0.52
0.35
AI







•
AJ
9.0
7.0
8.0
1.00
0.236
8.00
-0.52
-0.69
AK
10.0
10.0
10.0
0.00
0.000
10.00
0.17
0.00
AL
9.0
11.0
8.0
1.53
0.354
9.33
-0.06
-0.23
AP







' •
AU
9.0
9.0
8.0
0.58
0.118
8.67
-0.29
-0.46
AW
11.0
12.0
12.0
0.58
0.118
11.67
0.75
0.58
AY
14.0
11.0
10.0
2.08
0.473
11.67
0.75
0.58
AZ
9.0
12.0
10.0
1.53
0.354
10.33
0.29
0.12
BA
9.0
11.0
9.0
1.15
0.236
9.67
0.06
-0.12
BB
10.0
10.0
11.0
0.58
0.118
10.33
0.29
0.12
BC
11.0
100
12.0
1.00
0.236
11.00
0.52
0.35
BO







•
BH
11.0
12.0
11.0
0.58
0.118
11.33
0.63
0.46
BK
9.0
9.0
9.0
0.00
0.000
9.00
-0.18
-0.35
BL
9.0
11.0
10.0
1.00
0.236
10.00
0.17
0.00
BM
11.0
10.0
9.0
1.00
0.236
10.00
0.17
0.00
BN
8.0
9.0
8.0
0.58
0.118
8.33
-0.41
-0.58
BO
10.0
10.0
10.0
0.00
0.000
10.00
0.17
0.00
C
10.0
10.0
10.0
0.00
0.000
10.00
0.17
0.00
CA
10.0
9.0
10.0
0.58
0.118
9.67
0.06
-0.12
CC







•
CE
9.0
8.0
9.0
0.58
0.118
8.67
-0.29
-0.46
CJ
10.0
11.0
11.0
0.58
0.118
10.67
0.40
0.23
CO
10.0
11.0
12.0
1.00
0.236
11.00
0.52
0.35
CP
11.0
12.0
11.0
0.58
0.118
11.33
0.63
0.46
cs







*
cx
9.0
9.0
8.0
0.58
0.118
8.67
-0.29
-0.46
D
9.0
9.0
9.0
0.00
0.000
9.00
-0.18
-0.35
DD
11.0
10.0
9.0
1.00
0.236
10.00
0.17
0.00
DE
10.0
10.0
10.0
0.00
0.000
10.00
0.17
0.00
DH
10.0
9.0
9.0
0.58
0.118
9.33
-0.06
-0.23
DO
10.0
9.0
11.0
1.00
0.236
10.00
0.17
0.00
DR
11.0
10.0
11.0
0.58
0.118
10.67
0.40
0.23
DT
8.0
8.0
12.0
2.31
0.473
9.33
-0.06
-0.23
DZ







•
E
8.0
10.0
11.0
1.53
0.354
9.67
0.06
-0.12
EA







•
EB
10.0
10.0
10:0
0.00
0.000
10.00
0.17
0.00
EL
11.0
10.0
10.0
0.58
0.118
10.33
0.29
0.12
EW
11.0
8.0
9.0
1.53
0.354
9.33
-0.06
-0.23
• =
No data submitted

TAG SYMBOLS

IT = Above control limit
0 =
		
Insufficient data
x =
Determined to be an outlier
11 = Below control limit
-------
ESD-LV Performance Evaluation: Gamma in Water, 7-Nov-1997	19/37
f	'	—		¦	¦	,	—	
Cesium-134
T , _ ,	_	Exper. Rng anal	Normalized deviation
Lab Res. 1	Res. 2	Res. 3	Sigma (R + SR) Average (grand-avg) (known) Tag
ux
8.0
6.0
9.0
1.53
0.354
7.67
-0.64
-0.81

FE
9.0
8.0
11.0
1.53
0.354
9.33
-0.06
-0.23

FJ
10.0
10.0
10.0
0.00
0.000
10.00
0.17
0.00

FL
9.0
11.0
11.0
1.15
0.236
10.33
0.29
0.12

GI
8.0
7.0
9.0
1.00
0.236
8.00
-0.52
-0.69

GL
9.0
7.0
8.0
1.00
0.236
8.00
-0.52
-0.69

GQ
10.0
10.0
10.0
0.00
0.000
10.00
0.17
0.00

HE
8.0
10.0
9.0
1.00
0.236
9.00
-0.18
-0.35

HI
15.0
10.0
12.0
2.52
0.591
12.33
0.98
0.81

HK
10.0
10.0
10.0
0.00
0.000
10.00
0.17
0.00

HL
10.0
10.0
10.0
0.00
0.000
10.00
0.17
0.00

hp;
HX'








¦
v' • -
I
9.0
10.0
9.0
0.58
0.118
9.33
-0 06
-0.23

IU
J
10.0
10.0
10.0
0.00
0.000
10.00
017
0.00
...
JE
11.0
10.0
11.0
0.58
0.118
10.67
0.40
0.23

JG









JM
10.0
9.0
10.0
0.58
0.118
9.67
0.06
-0.12

JS
10.0
10.0
10.0
0.00
0.000
10.00
0.17
0.00

JY
9.0
9.0
9.0
0.00
0.000
9.00
-0.18
-0.35

K
9.0
9.0
9.0
0.00
0.000
9.00
-0.18
-0.35

KH
9.0
9.0
9.0
0.00
0.000
9.00
-0.18
-0.35

KL
9.0
9.0
9.0
0.00
0.000
9.00
-0.18
-0.35

KX
12.0
11.0
10.0
1.00
0.236
11.00
0.52
0.35

L
8.0
9.0
10.0
1.00
0.236
9.00
-0.18
-0.35

LE
11.0
13.0
14.0
1.53
0.354
12.67
1.09
0.92

LF
12.0
11.0
9.0
1.53
0.354
10.67
0.40
0.23

LR
9.0
9.0
9.0
0.00
0.000
9.00
-0.18
-0.35

LT
8.0
9.0
9.0
0.58
0.118
8.67
-0.29
-0.46

M
66.0
70.0
680
2.00
0.473
68.00
20.26
20.09
X
MP
10.0
11.0
7.0
2.08
0.473
9.33
-0.06
-0.23

MT
9.0
9.0
9.0
0.00
0.000
9.00
-0.18
-0.35

MV
8.0
8.0
10.0
1.15
0.236
8.67
-0.29
-0.46

MX
8.0
9.0
9.0
0.58
0.118
8.67
-0.29
-0.46

N
10.0
10.0
9.0
0.58
0.118
9.67
0.06
-0.12

NH
9.0
8.0
8.0
0.58
0.118
8.33
-0.41
-0.58

NJ
10.0
9.0
9.0
0.58
0.118
9.33
-0.06
-0.23

NK
6.0
8.0
7.0
1.00
0.236
7.00
-0.87
-1.04

NO
5.0
7.0
9.0
2.00
0.473
7.00
-0.87
-1.04

NP
8.0
8.0
9.0
0.58
0.118
8.33
-0.41
-0.58

O
10.0
10.0
10.0
0.00
0.000
10.00
0.17
0.00

OA
8.0
8.0
9.0
0.58
0.118
8.33
-0.41
-0.58

OB








•
OM
10.0
11.0
11.0
0.58
0.118
10.67
0.40
0.23

• = No data submitted	TAG SYMBOLS	It = Above control limit
0 = Insufficient data	x = Determined to be an outlier	II a Below control limit
-------
/>—		
20/37
ESD-LV Performance Evaluation: Gamma in Water,
7-Nov-1997

	=5\
Cesium-134








Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation

Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
OT
6.0
6.0
5.0
0.58
0.118
5.67
-1.33
-1.50

P
8.0
9.0
10.0
1.00
0.236
9.00
-0.18
-0.35

PB
10.0
10.0
10.0
0.00
0.000
10.00
0.17
0.00

PD
12.0
13.0
9.0
2.08
0.473
1133
0.63
0.46

PE








. #
PM
8.0
9.0
7.0
1.00
0.236
8.00
-0.52
-0.69

PQ







- • '
PU









PW
9.0
7.0
10.0
1.53
0.354
8.67
-0.29
-0.46

PX
10.0
11.0
10.0
0.58
0.118
10.33
0.29
0.12

Q
8.0
10.0
10.0
1.15
0.236
9.33
-0.06
-0.23

QM
10.0
11.0
7.0
2.08
0.473
9.33
-0.06
-0.23

QP
11.0
10.0
10.0
0.58
0.118
10.33
0-29
0.12

QT
8.0
10.0
8.0
1.15
0.236
8.67
-0.29
-0.46

QU
6.0
6.0
9.0
1.73
0.354
7.00
-0.87
-1.04

QW
7.0
7.0
6.0
0.58
0.118
6.67
-0.98
-1.15

QX
5.0
4.0
5.0
0.58
0118
4.67
-1.68
-1.85

QZ








- • "
R
10.0
10.0
10.0
0.00
0.000
10.00
0.17
0.00

RH









RK








- 9
RO
10.0
10.0
10.0
0.00
0.000
10.00
0.17
0.00

RR








•
RU








•
RX
12.0
13.0
11.0
1.00
0.236
12.00
0.86
0.69

RZ
85.0
89.0
94.0
4.51
1;X20
89:33
27.65
27.48
X
S
8.0
9.0
9.0
0.58
0.118
8.67
-0.29
-0.46

sc
9.0
9.0
8.0
0.58
0.118
8.67
-0.29
-0.46

SD
9.0
9.0
9.0
0.00
0.000
9.00
-0.18
-0.35

SF
8.0
9.0
9.0
0.58
0.118
8.67
-0.29
-0.46

SI
11.0
10.0
9.0
1.00
0.236
10.00
0.17
0.00

SM
9.0
9.0
9.0
0.00
0.000
9.00
-0.18
-0.35

SN
9.0
9.0
9.0
0.00
0.000
9.00
-0.18
-0.35

SR
7.0
10.0
9.0
1.53
0.354
8.67
-0.29
-0.46

ss
14.0
12.0
11.0
1.53
0.354
12.33
0.98
0.81

sv
7.0
7.0
9.0
1.15
0.236
7.67
-0.64
-0.81

sx
10.0
6.0
9.0
2.08
0.473
8.33
-0.41
-0.58

sz
9.0
9.0
10.0
0.58
0.118
9.33
-0.06
-0.23

T
8.0
10.0
10.0
1.15
0.236
9.33
-0.06
-0.23

TC
7.0
6.0
5.0
1.00
0.236
6.00
-1.21
-1.39

TD
8.0
9.0
13.0
2.65
0.591
10.00
0.17
0.00

TO
12.0
7.0
7.0
2.89
0.591
8.67
-0.29
-0.46

TQ
8.0
9.0
9.0
0.58
0.118
8.67
-0.29
-0.46

TR
19.0
20.0
19.0
0.58
0.118
19.33
3.40
3.23
X
T8






-

•
• =
No data submitted

TAG SYMBOLS

1T = Above control limit
0 S
^	
Insufficient data
x =
Determined to be an outlier
II = Below control limit
-------
E8D-LV Performance Evaluation: Gamma in Water, 7-Nov-1997
21/37
Cesium-134







Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation
Res. 3
Sigma
(R + SR)
Average
(grand-avg) (known)
• U '•
UP
5.0
5.0
5.0
0.00
0.000
5.00
-1.56
-1.73
UR
9.0
9.0
10.0
0.58
0.118
9.33
-0.06
-0.23
UV







ux
10.0
9.0
9.0
0.58
0.118
9.33
-0.06
-0.23
UY
14.0
8.0
10.0
3.06
0.709
10.67
0.40
0.23
VA
13 °.
10.0
110
1.53
0.354
11.33
0.63
0.46
VC







VE
162.0
162.0
119.0
22.60
8;771
144.33
46 71
46.53 ;
VH
10.0
8.0
9.0
1.00
0.236
9.00
-0.18
-0.35
VI
8.0
9.0
9.0
0.58
0.118
8.67
-0.29
-0.46
VM
10.0
10.0
10.0
0.00
0.000
10.00
0.17
0.00
VO
10.0
10.0
11.0
0.58
0.118
10.33
0.29
0.12
vs
8.0
15.0
13.0
3.61
0.827
12.00
0.86
0.69
w
9.0
10.0
10.0
0.58
0.118
9.67
0.06
-0.12
WD
160
19.0
160
1.73
0.354
17.00
2.60
2.42
WI







v
WJ
8.0
9.0
7.0
1.00
0.236
8.00
-0.52
-0.69
WK
9.0
9.0
9.0
0.00
0.000
9.00
-0.18
-0.35
WO
4.0
7.0
5.0
1.53
0.354
5.33
-1.45
-1.62
WR
11.0
14.0
10.0
2.08
0.473
11.67
0.75
0.58
WS
10.0
10.0
9.0
0.58
0.118
9.67
0.06
-0.12
WV








WW
8.0
9.0
11.0
1.53
0.354
9.33
-0.06
-0.23
WX








X
10.0
11.0
10.0
0.58
0.118
10.33
0.29
0.12
XA
9.0
10.0
12.0
1.53
0.354
10.33
0.29
0.12
XB
10.0
13.0
9.0
2.08
0.473
10.67
0.40
0.23
XC
10.0
12.0
9.0
1.53
0.354
10.33
0.29
0.12
XD
10.0
10.0
11.0
0.58
0.118
10.33
0.29
0.12
XF
9.0
7.0
9.0
1.15
0.236
8.33
-0.41
-0.58
XG
13.0
13.0
14.0
0.58
0.118
13.33
1.33
1.15
XI







\ ''
XK
10.0
10.0
9.0
0.58
0.118
9.67
0.06
-0.12
XO








Y
9.0
9.0
10.0
0.58
0.118
9.33
-0.06
-0.23
x
Data sorted by Laboratory Average
Average Tag
Lab
Average Tag
Lab
Average
Tag Lai
4.67
QX
7.00
QU
8.00
W<
5.00
UP
7.00
NO
8.00
Pfl
5.33
WO
7.00
NK
8.00
GI
5.67
OT
7.67
SV
8.00
GI
6.00
TC
. 7.67
EX
8.00
A<]
6.67
QW
7.67
AF
8.33
XF
• h No data submitted

TAG SYMBOLS

it
= Above control limi'
0 = Insufficient data

x = Determined to be an outlier

s Below control limi
-------
/J -
22/37
ESD-LV Performance Evaluation: Gamma in Water, 7-Nov-1997
	^
Cesium<134








Average

Dfltfl sorted by Laboratory Averaj
f©


Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
8.33

SX
9.33

SZ
10.00

AK
8.33

OA
9.33

QM
10.00

A
8.33

NP
9.33

Q
10.33

XD
8.33

NH
9.33

NJ
10.33

XC
8.33

BN
9.33

MP
10.33

XA
8.67

VI
9.33

I
10.33

X
8.67

TQ
9.33

FE
10.33

VO
8.67

TO
9.33

EW
10.33

QP
8.67

SR
9.33

DT
10.33

PX
8.67

SF
9.33

DH
10.33

FL
8.67

SC
9.33

AL
10.33

EL
8.67

S
9.67

XK
10.33

BB
8.67

QT
9.67

ws
10.33

AZ
8.67

PW
9.67

w
10.67

XB
8.67

MX
9.67

N
10.67

UY
8.67

MV
9.67

JM
10.67

OM
8.67

LT
9.67

E
10.67

LF
8.67

CX
9.67

CA
10.67

JE
8.67

CE
9.67

BA
10.67

DR
8.67

AU
9.67

AE
10.67

CJ
9.00

WK
10.00

VM
11.00

KX
9.00

VH
10.00

TD
11.00

CO
9.00

SN
10.00

SI
11.00

BC
9.00

SM
10.00

RO
11.00

AH
9.00

SD
10.00

R
11.33

VA
9.00

P
10.00

PB
11.33

PD
9.00

MT
10.00

O
11.33

CP
9.00

LR
10.00

JS
11.33

BH
9.00

L
10.00

IU
11.67

WR
9.00

KL
10.00

HL
11.67

AY
9.00

KH
10.00

HK
11.67

AW
9.00

K
10.00

GQ
12.00

vs
9.00

JY
10.00

FJ
12.00

RX
9.00

HE
10.00

EB
12.33

ss
9.00

D
10.00

DO
12.33

HI
9.00

BK
10.00

DE
12.67

LE
9.33

Y
10.00

DD
13.33

XG
9.33

WW
10.00

C
17.00

WD
9.33

ux
10.00

BO
19.33
X
TR
9.33

UR
10.00

BM
68.00
X
M
9.33

T
10.00

BL
89.33
X
RZ






144.33
X
VE
• s No data submitted

TAG SYMBOLS

11
a Above control limit
[ 0 a Insufficient data

x = Determined to be an outlier

& Below control limit
-------
E8D-LV Performance Evaluation: Gamma in Water, 7-Nov-1997
23/37
Cesium-134
% responding labs
Frequency distribution
20-
10-
—r~
-6


T
4	-2	0	+2
Normalized deviation of the mean from the known value
-r-
•f4
+6
% responding labs
Frequency distribution
20-
10-
~4~
—r-
-2
lafl
—r-
+4
-6
*2
Normalized deviation of the mean from the grand average
-------
ESD-LV Performance Evaluation: Gamma in Water, 7-Nov-1997	24/37
Cesium-137	Statistical Summary	171 Participants
The known value of this nuclide is 74.0 pCi/1 with an expected precision of 5.0; the control limits
are 65.3 to 82.7; the warning regions are 65.3 to 68.2 and 79.8 to 82.7
Statistic	Respondents	Non-outliers
Mean
85.31
Grand Avg 76.16
Std. Dev.
99.23
3.48
Variance
9847.41
12.12
% Coef. of Var.
116.32
4.57
% deviation of mean from known value
15.29
2.91
Norm. dev. of mean from known value
0.11
0.62
Median
76.00
76.00
% deviation of median from known value
2.70
2.70
Norm. dev. of median from known value
0.02
0.57
-------
f 2S / 37
ESD-LV Performance Evaluation: Gamma in Water,
7-Nov-1997

	
Cesium-137








Lab
Res. 1
Res. 2
Res. 3
Exper.
Rng anal

Normalized deviation

Sigma
-------
" "
ESD-LV Performance Evaluation: Gamma in Water, 7-Nov-1997	26 / 37
Cesium-137
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tae
/EX*.

; 69.0
. 68.0
3.51
0.827
62.33
-4.79
. ^4.04
X
FE
75.0
80.0
81.0
3.21
0.709
78.67
0.87
1.62

FJ
75.0
78.0
79.0
2.08
0.473
77.33
0.41
1.15

FL
77.0
77.0
77.0
0.00
0.000
77.00
0.29
1.04

GI
76.0
74.0
73.0
1.53
0.354
74.33
-0.63
0.12

GL
73.0
73.0
75.0
1.15
0.236
73.67
-0.86
-0.12

GQ
74.0
74.0
74.0
0.00
0.000
74.00
-0.75
0.00

HE
72.0
72.0
70.0
1.15
0.236
71.33
-1.67
-0.92

HI
80.0
77.0
77.0
1.73
0.354
78.00
0.64
1.39

HK
79.0
79.0
79.0
0.00
0.000
79.00
0.98
1.73

HL
hp
79.0
79.0
78.0
0.58
0.118
78.67
0.87
1.62

BK








, • .
• -
I
76.0
76.0
78.0
1.15
0.236
76.67
0.18
0.92

IU
-:J'- .
74.0
78.0
76.0
2.00
0.473
76.00
-0.05
0.69

JE
83.0
82.0
83.0
0.58
0.118
82.67
2.26
3.00

JG









JM
77.0
78.0
80.0
1.53
0.354
78.33
0.75
1.50

JS
72.0
74.0
73.0
1.00
0.236
73.00
-1.09
-0.35

JY
78.0
77.0
79.0
1.00
0.236
78.00
0.64
1.39

K
74.0
76.0
74.0
1.15
0.236
74.67
-0.52
0.23

KH
79.0
79.0
79.0
0.00
0.000
79.00
0.98
1.73

KL
72.0
77.0
70.0
3.61
0.827
73.00
-1.09
-0.35

KX
70.0
73.0
73.0
1.73
0.354
72.00
-1.44
-0.69

L
75.0
77.0
75.0
1.15
0.236
75.67
-0.17
0.58

LE
140,0
127.0
131.0
6.66
2.020
L32.67
19.58
20.32
X
LF
82.0
77.0
76.0
3.21
0.709
78.33
0.75
1.50

LR
72.0
72.0
75.0
1.73
0.354
73.00
-1.09
-0.35

LT
75.0
77.0
76.0
1.00
0.236
76.00
-0.05
0.69

M
75.0
77.0
75.0
1.15
0.236
75.67
-0.17
0.58

MP
77.0
71.0
71.0
3.46
0.709
73.00
-1.09
-0.35

MT
73.0
73.0
74.0
0.58
0.118
73.33
-0.98
-0.23

MV
84.0
82.0
82.0
1.15
0.236
82.67
2.26
3.00

MX
75.0
75.0
75.0
0.00
0.000
75.00
-0.40
0.35

N
78.0
77.0
75.0
1.53
0.354
76.67
0.18
0.92

NH
72.0
71.0
71.0
0.58
0.118
71.33
-1.67
-0.92

NJ
78.0
78.0
74.0
2.31
0.473
76.67
0.18
0.92

NK
69.0
70.0
69.0
0.58
0.118
69.33
-2.36
-1.62

NO
80.0
83.0
86.0
3.00
0.709
83.00
2.37
3.12
IT
NP
73.0
70.0
76.0
3.00
0.709
73.00
-1.09
-0.35

O
85.0
83.0
83.0
1.15
0.236
83.67
2.60
3.35
ir
OA
75.0
75.0
77.0
1.15
0.236
75.67
-0.17
0.58

OB
80.0
81.0
79.0
1.00
0.236
80.00
1.33
2.08

OM
80.0
81.0
83.0
1.53
0.354
81.33
1.79
2.54

• S
[0S
No data submitted
Insufficient data
x =
TAG SYMBOLS
Determined to be an outlier
ft s Above control limit
II = Below control limit
-------
//		——
27/37
ESD-L.V Performance Evaluation: Gamma
in Water,
£
0
z

	^1
Cesium-137








Lab
Res. 1
Res. 2
Res. 3
Exper.
Rng anal

Normalized deviation

Sigma
(R + SR)
Average
(grand-avg)
(known) Taj?
OT
78.0
78.0
89.0
6 35
1.570
81.67
1.91
2.66

P
74.0
76.0
77.0
1.53
0.354
75.67
-0.17
0.58

PB
79.0
80.0
80.0
0.58
0.118
79.67
1.22
1.96

PD
78.0
71.0
84.0
6.51
2.020
77.67
0.52
1.27

PE








PM
74.0
75.0
72.0
1.53
0.354
73.67
-0.86
-0.12

PQ







. • -
PU








•
PW
74.0
75.0
72.0
1.53
0.354
73.67
-0.86
-0.12

PX
66.0
72.0
70.0
3.06
0.709
69.33
-2.36
-1.62

Q
73.0
74.0
77.0
2.08
0.473
74.67
-0.52
0.23

QM
80.0
78.0
80.0
1.15
0.236
79.33
1.10
1.85

QP
72.0
78.0
77.0
3.21
0.709
75.67
-0.17
0.58

QT
73.0
72.0
77.0
2.65
0.591
74.00
-0.75
0.00

QU
78.0
78.0
81.0
1.73
0.354
79.00
0.98
1.73

QW
80.0
79.0
81.0
1.00
0.236
80.00
1.33
2.08

QX
39.0
39.0
39.0
0.00
o'ooo
39.00
•12.37
-12.12
X
QZ








. *
R
78.0
78.0
77.0
0.58
0.118
77.67
0.52
1.27

RH








*
RK









RO
78.0
76.0
77.0
1.00
0.236
77.00
0.29
1.04

BR








•
RU








•
RX
76.0
750
76.0
0.58
0.118
75.67
-0.17
0.58

RZ
69.0
73.0
69.0
2.31
0.473
70.33
-2.02
-1.27

S
71.0
73.0
73.0
1.15
0.236
72.33
-1.32
-0.58

sc
74.0
78.0
73.0
2.65
0.591
75.00
-0.40
0.35

SD
74.0
77.0
76.0
1.53
0.354
75.67
-0.17
0.58

SF
68.0
69.0
72.0
2.08
0.473
69.67
-2.25
-1.50

SI
86.0
79.0
81.0
3.61
0.827
82.00
2.02
2.77

SM
78.0
80.0
77.0
1.53
0.354
78.33
0.75
1.50

SN
69.0
73.0
73.0
2.31
0.473
71.67
-1.56
-0.81

SR
75.0
69.0
73.0
3.06
0.709
72.33
-1.32
-0.58

ss
83.0
80.0
86.0
3.00
0.709
83.00
2.37
3.12
IT
sv
74.0
69.0
75.0
3.21
0.709
72.67
-1.21
-0.46

sx
72.0
71.0
70.0
1.00
0.236
71.00
-1.79
-1.04

sz
72.0
73.0
75.0
1.53
0.354
73.33
-0.98
-0.23

T
72.0
70.0
73.0
1.53
0.354
71.67
-1.56
-0.81

TC
72.0
71.0
71.0
0.58
0.118
71.33
-1.67
-0.92

TD
71.0
78.0
74.0
3.51
0.827
74.33
-0.63
0.12

TO
73.0
74.0
77.0
2.08
0.473
74.67
-0.52
023

TQ
78.0
75.0
76.0
1.53
0.354
76.33
0.06
0.81

TR
119.0
121.0
120.0
1.00
0.236
120 00
15.19
15.93
X
TS








~
• =
No data submitted

TAG SYMBOLS

ft = Above control limit
in
$
Insufficient data
x =
Determined to be an outlier
= Below control limit
-------
ESD-LV Performance Evaluation: Gamma in Water, 7-Nov-1997
28/37
Cesium-137
Lab
Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tae
U.
UP
41.0
41.0
41.0
0.00
0.000
41.00
-12,18
-1143
•
X
UR
73.0
78.0
77.0
2.65
0.591
76.00
-0.05
0.69

UV







0 .
UX
76.0
76.0
76.0
0.00
0.000
76.00
-0.05
0.69

UY
73.0
77.0
77.0
2.31
0.473
75.67
-0.17
0.58

VA
91.0
880
87;0;
2.08
0.473
88.67
4;33
: 5,08
X
VC







' •
VE
1240.0
1330.0
1200.0
66.68
28.347
1266.67
408.94
409.69
/x
VH
84.0
80.0
81.0
2.08
0.473
81.67
1.91
2.66

VI
74.0
81.0
86.0
6.03
1.795
80.33
1.45
2.19

VM
79.0
79.0
79.0
0.00
0.000
79.00
0.98
1.73

VO
70.0
79.0
82.0
6.24
1.795
77.00
0.29
1.04

vs
71.0
72.0
72.0
0.58
0.118
71.67
-1.56
-0.81

w
80.0
77.0
76.0
2.08
0.473
77.67
0.52
1.27

WD
158.0
166.0
168.0
1.16
0.236
167 33
728712
28,87
X
WI








WJ
76.0
76.0
66.0
5.77
1.345
72.67
-1.21
-0.46

WK
72.0
73.0
72.0
0.58
0.118
72.33
-1.32
-0.58

WO
73.0
76.0
74.0
1.53
0.354
74.33
-0.63
0.12

WR
80.0
82.0
85.0
2.52
0.591
82.33
2.14
2.89

ws
73.0
750
73.0
1.15
0.236
73.67
-0.86
-0.12

wv








•
WW
76.0
87.0
88.0
6.66
1.795
83.67
2.60
3.35
it
WX








•
X
78.0
88.0
80.0
5.29
1.345
82.00
2.02
2.77

XA
71.0
72.0
71.0
0.58
0.118
71.33
-1.67
-0.92

XB
74.0
80.0
88.0
7.02
2.245
80.67
1.56
2.31

XC
76.0
77.0
80.0
2.08
0.473
77.67
0.52
1.27

XD
79.0
80.0
78.0
1.00
0.236
79.00
0.98
1.73

XF
77.0
74.0
78.0
2.08
0.473
76.33
0.06
0.81

XG
79.0
79.0
78.0
0.58
0.118
78.67
0.87
1.62

XI









XK
81.0
84.0
87.0
3.00
0.709
84.00
2.72
3.46
ft
XO








•
Y
73.0
80.0
81.0
4.36
0.945
78.00
0.64
1.39

Data sorted by Laboratory Average
Average
Tag
Lab
Average Tag
Lab
Average
Tag Lab
39.00
X
QX
69.67
SF
71.33
HE
41.00
X
UP
70.33
RZ
71.33
BA
62.33
X
EX
71.00
SX
71.67
VS
67.33

AY
71.33
XA
71.67
T
69.33

PX
71.33
TC
71.67
SN
69.33

NK
71.33
NH
72.00
KX
• = No data submitted

TAG SYMBOLS

ft
= Above control limit
0 ¦= Insufficient data

x s Determined to be an outlier

= Below control limit
-------
f 29/37
r
E8D-LV Performance Evaluation: Gamma in Water, 7-Nov-1997
	
Cesium-137








Average

Data sorted by Laboratory Averag
fe


Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
72.00

AU
75.67

RX
78.00
—.i— - g ¦ —.
CA
72.00

A
75.67

QP
78.00

AH
72.33

WK
75.67

p
78.33

SM
72.33

SR
75.67

OA
78.33

LF
72.33

S
75.67

M
78.33

JM
72.67

WJ
75.67

L
78.67

XG
72.67

sv
75.67

E
78.67

HL
7300

NP
75.67

BO
73.67

FE
73.00

MP
76.00

UX
79.00

XD
73.00

LR
76.00

UR
79.00

VM
73.00

KL
76.00

LT
79.00

QU
73.00

JS
76.00

IU
79.00

KH
73.00

AK
76.00

CJ
79.00

HK
73.33

SZ
76.00

BC
79.33

QM
73.33

MT
76.00

AL
79.33

DD
73.67

WS
76.33

XF
79.67

PB
73.67

PW
76.33

TQ
80.00

QW
73.67

PM
76.33

EW
80.00

OB
73.67

GL
76.33

DH
80.00

BH
73.67

CX
76.33

AZ
80.33

VI
73.67

BM
76.67

NJ
80.67

XB
74.00

QT
76.67

N
81.33

OM
74.00

GQ
76.67

I
81.33

BN
74.00

D
76.67

DT
81.67

VH
74.00

CE
76.67

DE
81.67

OT
74.00

AJ
76.67

CP
82,00

X
74.33

WO
76.67

BK
82.00

SI
74.33

TD
76.67

AW
82.33

WR
74.33

GE
77.00

VO
82.67

MV
74.33

BL
77.00

RO
82.67

JE
74.33

AE
77.00

FL
83.00
ft
SS
74.67

TO
77.33

FJ
83.00
ft
NO
74.67

Q
77.33

EL
83.67
ft
WW
74.67

K
77.67

XC
83.67
ft
O
74.67

C
77.67

W
84.00
ft
XK
75 00

8C
77.67

R
84 67
ft
BO
75.00

MX
77.67

PD
88.67
X
VA
75.00

AF
77.67

BB
97.00
X
EB
75.33

DR
78.00

Y
120.00
X
TR
75.67

UY
78.00

JY
132.67
X
LE
75.67

SD
78.00

HI
157.33
X
WD



78.00

CO
1256.67
X
VE
• s No data submitted

TAG SYMBOLS

ft
= Above control limit
0 s Insufficient data
^	

x = Determined to be an outlier

= Below control limit J
-------
ESD-LV Performance Evaluation: Gamma in Water, 7-Nov-1997
30/37
Cesium-137
% responding labs		Frequency distribution
10-

1	1	T	1		—i—~	—i	T	r"
-6	-4	-2	0	+2	+4	+6
Normalized deviation of the mean from the known value
% responding labs	Frequency distribution	
10f

II.	| ¦ ¦	—j—y—»¦—y—| ¦ |	|
-6	-4-2	0	+2+4+6
Normalized deviation of the mean from the grand average
-------
ESD-LV Performance Evaluation: Gamma in Water, 7-Nov-1997
31/37
Barium-133	Statistical Summary	171 Participants
The known value of this nuclide is 99.0 pCi/1 with an expected precision of 10.0; the control limits
are 81.7 to 116.3; the warning regions are 81.7 to 87.4 and 110.6 to 116.3
29(17.0 %) Failed to respond
. 122(71.3 %) Within all limits
5(2.9 %) Outliers * f NjV


6(3.5 %) Out of control '

9(5.3 %) In warning zone
but not an outlier ^
|
i i
but within control
Statistic
Respondents
Non-outliers
Mean
105.30
Grand Avg 94.56
Std. Dev.
129.46
6.29
Variance
16756.62
39.58
% Coef. of Var.
122.93
6.65
% deviation of mean from known value
6.36
-4.48
Norm. dev. of mean from known value
0.05
-0.71
Median
95.00
95.00
% deviation of median from known value
-4.04
-4.04
Norm. dev. of median from known value
-0.03
-0.64
12(8.5 %) More than 3 norm. S.D
8(5.6 %) Between 2 and 3 norm. S.D. •
,79(55.6 %) Within 1 norm. S.D.
!	of Known value
43(30.3 %) Between 1 and 2 norm. S.D.

-------
(f			
32/37
ESD-LV Performance Evaluation: Gamma
in Water,
7-Nov-1897

	
Barium-133







-v
Lab
Res. 1
Res. 2
Res. 3
Exper.
Rng anal

Normalized deviation

Sigma
(R + SR)
Average
(grand-avg) (known) Tae
A
87.0
86.0
93.0
3.79
0.413
88.67
-1.02
-1.79

AE
100.0
98.0
94.0
3.06
0.354
97.33
0.48
-0.29

AF
102.0
100.0
98.0
2.00
0.236
100.00
0.94
0.17

AH
83.0
92.0
102.0
9.50
1.233
92.33
-0.39
-1.15

AI








AJ
83.0
74.0
74.0
5.20
0.532
77.00
-3.04
-3.81
w.
AK
96.0
96.0
96.0
0.00
0.000
96.00
0.25
-0.52

AL
95.0
93.0
95.0
1.15
0.118
94.33
-0.04
-0.81

AP







m
AU
95.0
90.0
89.0
3.21
0.354
91.33
-0.56
-1.33

AW
98.0
100.0
102.0
2.00
0.236
100.00
0.94
0.17

AY
88.0
92.0
88.0
2.31
0.236
89.33
-0.91
-1.67

AZ
95.0
104.0
92.0
6.24
0.709
97.00
0.42
-0.35

BA
100.0
98.0
103.0
2.52
0.295
100.33
1.00
0.23

BB
89.0
101.0
93.0
6.11
0.709
94.33
-0.04
-0.81

BC
87.0
89.0
85.0
2.00
0.236
87.00
-1.31
-2.08

BO








•
BH
92.0
93.0
90.0
1.53
0.177
91.67
-0.50
-1.27

BK
86.0
86.0
85.0
0.58
0.059
85.67
-1.54
-2.31

BL
94.0
100.0
92.0
4.16
0.473
95.33
0.13
-0.64

BM
93.0
94.0
96.0
1.53
0.177
94.33
-0.04
-0.81

BN
100.0
97.0
93.0
3.51
0.413
96.67
0.36
-0.40

BO
99.0
98.0
87.0
6.66
0.709
94.67
0.02
-0.75

C
106.0
99.0
103.0
3.51
0.413
102.67
1.40
0.64

CA
98.0
92.0
102.0
5.03
0.591
97.33
0.48
-0.29

CC








•
CE
89.0
92.0
86.0
3.00
0.354
89.00
-0.96
-1.73

CJ
79.0
78.0
79.0
0.58
0.059
78.67
-2.75
-3.52

CO
85.0
94.0
99.0
7.09
0.827
92.67
-0.33
-1.10

CP
103.0
108.0
101.0
3.61
0.413
104.00
1.63
0.87

CS








•
CX
91.0
95.0
86.0
4.51
0.532
90.67
-0.67
-1.44

D
96.0
95.0
96.0
0.58
0.059
95.67
0.19
-0.58

DD
92.0
93.0
95.0
1.53
0.177
93.33
-0.21
-0.98

DE
96.0
97.0
97.0
0.58
0.059
96.67
0.36
-0.40

DH
89.0
89.0
90.0
0.58
0.059
89.33
-0.91
-1.67

DO
100.0
100.0
99.0
0.58
0.059
99.67
0.88
0.12

DR
93.0
98.0
98.0
2.89
0.295
96.33
0.31
-0.46

DT
95.0
101.0
100.0
3.21
0.354
98.67
0.71
-0.06

DZ








•
E
92.0
99.0
95.0
3.51
0.413
95.33
0.13
-0.64

EA








•
EB
108.0
108.0
107.0
0.58
0.059
107.67
2.27
1.50

EL
95.0
99.0
99.0
2.31
0.236
97.67
0.54
-0.23

EW
90.0
94.0
92.0
2.00
0.236
92.00
-0.44
-1.21

• =
No data submitted

TAG SYMBOLS

1! = Above control limit
0 =
V	
Insufficient data
x =
Determined to be an outlier
= Below control limit
-------
ESD-LV Performance Evaluation: Gamma in Water, 7-Nov-1997
Barium-133
Lab Res. 1
Res. 2
Res. 3
Exper.
Sigma
Rng anal
(R + SR)
Average
Normalized deviation
(grand-avg) (known) Tae
EX
88.0
87.0
86.0
1.00
0.118
87.00
-1.31
-2.08

FE
86.0
89.0
89.0
1.73
0.177
88.00
-1.14
-1.91

FJ
96.0
96.0
95.0
0.58
0.059
95.67
0.19
-0.58

FL
101.0
93.0
100.0
4.36
0.473
98.00
0.60
-0.17

GI
96.0
95.0
96.0
0.58
0.059
95.67
0.19
-0.58

GL
87.0
93.0
93.0
3.46
0.354
91.00
-0.62
-1.39

GQ
96.0
96.0
96.0
0.00
0.000
96.00
0.25
-0.52

HE
93.0
94.0
95.0
1.00
0.118
94.00
-0.10
-0.87

m
96.0
95.0
97.0
1.00
0.118
96.00
0.25
-0.52

HK
92.0
93.0
92.0
0.58
0.059
92.33
-0.39
-1.15

HL
100.0
100.0
98.0
1.15
0.118
99.33
0.83
0.06











•mr^'









I
101.0
101.0
98.0
1.73
0.177
100.00
0.94
0.17

IU
J ,
91.0
97.0
94.0
3.00
0.354
94.00
-0.10
-0.87

JE
97.0
97.0
96.0
0.58
0.059
96.67
0.36
-0.40

JG







	*

JM
94.0
93.0
95.0
1.00
0.118
94^00
-0.10
-0.87

JS
94.0
91.0
93.0
1.53
0.177
92.67
-0.33
-1.10

JY
98.0
98.0
97.0
0.58
0.059
97.67
0.54
-0.23

K
94.0
98.0
97.0
2.08
0.236
96.33
0.31
-0.46

KH
102.0
101.0
102.0
0.58
0.059
101.67
1.23
0.46

KL
94.0
92.0
91.0
1.53
0.177
92.33
-0.39
-1.15

KX
95.0
97.0
96.0
1.00
0.118
96.00
0.25
-0.52

L
95.0
94.0
94.0
0.58
0.059
94.33
-0.04
-0.81

LE
104.0
105.0
109.0
2.65
0.295
106.00
1.98
1.21

LF
100.0
99.0
100.0
0.58
0.059
99.67
0.88
0.12

LR
92.0
86.0
92.0
3.46
0.354
90.00
-0.79
-1.56

LT
88.0
88.0
88.0
0.00
0.000
88.00
-1.14
-1.91

M
82.0
80.0
80.0
1.15
0.118
80.67
-2.41
-3.18

MP
93.0
97.0
95.0
2.00
0.236
95.00
0.08
-0.69

MT
91.0
92.0
92.0
0.58
0.059
91.67
-0.50
-1.27

MV
101.0
101.0
99.0
1.15
0.118
100.33
1.00
0.23

MX
96.0
96.0
97.0
0.58
0.059
96.33
0.31
-0.46

N
97.0
100.0
98.0
1.53
0.177
98.33
0.65
-0.12

NH
90.0
90.0
89.0
0.58
0.059
89.67
-0.85
-1.62

NJ
93.0
97.0
91.0
3.06
0.354
93.67
-0.16
-0.92

NK
80.0
76.0
78.0
2.00
0.236
78.00
-2.87
-3.64
u
NO
75.0
80.0
85.0
5.00
0.591
80.00
-2.52
-3.29
Ji
NP
92.0
86.0
95.0
4.58
0.532
91.00
-0.62
-1.39

O
100.0
98.0
98.0
1.15
0.118
98.67
0.71
-0.06

OA
97.0
96.0
97.0
0.58
0.059
96.67
0.36
-0.40

OB








•
OM
98.0 .
99.0
100.0
1.00
0.118
99.00
0.77
0.00

• = No data submitted	TAG SYMBOLS	IT = Above control limit
0 s-- Insufficient data	x = Determined to be an outlier	II s Below control limit
-------

34/37
ESD-LV Performance Evaluation: fJn-mmn in Wafer,
7-Nov-1997

	
Barium-133








Lab
Res. 1
Res. 2

Exper.
Rng anal

Normalized deviation

Res. 3
Sigma
(R + SR)
Average
(grand-avg)
(known) Tag
OT
98.0
103.0
95.0
4.04
0.473
98.67
0.71
¦ -0.06

P
92.0
97.0
96.0
2.65
0.295
95.00
0.08
-0.69

PB
88.0
89.0
90.0
1.00
0.118
89.00
-0.96
-1.73

PD
98.0
97.0
98.0
0.58
0.059
97.67
0.54
-0.23

PE









PM
95.0
89.0
92.0
3.00
0.354
92.00
-0.44
-1.21

PQ








•
PU








•
PW
90.0
87.0
89.0
1.53
0.177
88.67
-1.02
-1.79

PX
95.0
102.0
98.0
3.51
0.413
98.33
0.65
-0.12

Q
95.0
93.0
92.0
1.53
0.177
93.33
-0.21
-0.98

QM
104.0
101.0
94.0
5.13
0.591
99.67
0.88
0.12

QP
90.0
94.0
102.0
6.11
0.709
95.33
0.13
-0.64

QT
98.0
102.0
100.0
2.00
0.236
100.00
0.94
0.17

QU
90.0
95.0
98.0
4.04
0.473
94.33
-0.04
-0.81

QW
96.0
96.0
93.0
1.73
0.177
95.00
0.08
-0.69

0x
45*0
45.0
46.0
0.58
0069
45.33
* -8»53 -
-9.30
' .*V~-
QZ







-
-
R
94.0
92.0
91.0
1.53
0.177
92.33
-0.39
-1.15

RH








fz* ,
RK








V'
RO
90.0
89.0
88.0
1.00
0.118
89.00
-0.96
-1.73

RR








- •
RU








•
RX
88.0
91.0
90.0
1.53
0.177
89.67
-0.85
-1.62

RZ
84.0
86.0
85.0
1.00
0.118
85.00
-1.66
-2.42

S
100.0
95.0
94.0
3.21
0.354
96.33
0.31
-0.46

sc
91.0
89.0
88.0
1.53
0.177
89.33
-0.91
-1.67

SD
89.0
96.0
92.0
3.51
0.413
92.33
-0.39
-1.15

SF
75.0
75.0
79.0
2.31
0.236
76.33
-3.16
-3.93

SI
96.0
99.0
98.0
1.53
0.177
97.67
0.54
-0.23

SM
101.0
100.0
100.0
0.58
0.059
100.33
1.00
0.23

SN
96.0
92.0
89.0
3.51
0.413
92.33
-0.39
-1.15

SR
89.0
89.0
88.0
0.58
0.059
88.67
-1.02
-1.79

ss
86.0
83.0
94.0
5.69
0.650
87.67
-1.19
-1.96

sv
99.0
105.0
97.0
4.16
0.473
100.33
1.00
0.23

sx
94.0
83.0
95.0
6.66
0.709
90.67
-0.67
-1.44

sz
94.0
95.0
89.0
3.21
0.354
92.67
-0.33
-1.10

T
97.0
100.0
95.0
2.52
0.295
97.33
0.48
-0.29

TC
71.0
71.0
74.0
1.73
0.177
72.00
-3.91
-4.68
X
TD
82.0
85.0
78.0
3.51
0.413
81.67
-2.23
-3.00

TO
102.0
100.0
103.0
1.53
0.177
101.67
1.23
0.46

TQ
90.0
101.0
100.0
6.08
0.650
97.00
0.42
-0.35

TR
87.0
89.0
87.0
1.15
0.118
87.67
-1.19
-1.96

TS








•
• =
No data submitted •

TAG SYMBOLS

ft = Above control limit
1 0 =
^	
Insufficient data
x =
Determined to be an outlier
U = Below control limit
-------
ESD-LV Performance Evaluation: Gamma in Water, 7-Nov-1997
35/37
/	—	
Barium-133








Lab
Res. 1
Res. 2
Res. 3
Exper.
Rng anal

Normalized deviation

Sigma
(R + SR)
Average
(grand-avg) (known) Tap
UP
.60.0
50.0
50.0
0.00
0.000
50.00
-7,72
-8.49
v>
X
UR
1040
1190
113.0
7.55
0.886
112.00
3.02
2.25

uv







, 0
ux
101.0
102.0
102.0
0.58
0.059
101.67
1.23
0.46

UY
90.0
95.0
80.0
7.64
0.886
88.33
-1.08
-1.85

VA
113.0
114.0
117.0
2.08
0.236
114.67
3.48
2.71

VC







- •
VE
1590.0
1660.0
16600
34.64
6.846
1630-00
265.95
265.18
X
VH
100.0
96.0
99.0
2.08
0.236
98.33
0.65
-0.12

VI
91.0
91.0
96.0
2.89
0.295
92.67
-0.33
-1.10

VM
95.0
95.0
95.0
0.00
0.000
95.00
0.08
-0.69

VO
94.0
99.0
102.0
4.04
0.473
98.33
0.65
-0.12

vs
93.0
91.0
91.0
1.15
0.118
91.67
-0.50
-1.27

w
94.0
100.0
94.0
3.46
0.354
96.00
0.25
-0.52

WD
202.0
199.0
200.0
1.63
0.i77
20033
1&32
17^55
\x.
m






-V •
WJ
101.0
102.0
97.0
2.65
0.295
100.00
0.94
0.17

WK
86.0
87.0
87.0
0.58
0.059
86.67
-1.37
-2.14

wo
126.0
113.0
106.0
10.15
1.345
115.00
3.54
2.77

WR
95.0
95.0
101.0
3.46
0.354
97.00
0.42
-0.35

ws
100.0
105.0
i04.0
2.65
0.295
103.00
1.46
0.69

wv









WW
94.0
89.0
110.0
10.97
1.458
97.67
0.54
-0.23

WX







¦ ¦ •
. •
X
94.0
100.0
83.0
8.62
1.008
92.33
-0.39
-1.15

XA
96.0
88.0
92.0
4.00
0.473
92.00
-0.44
-1.21

XB
96.0
83.0
99.0
8.50
0.945
92.67
-0.33
-1.10

xc
96.0
93.0
105.0
6.24
0.709
98.00
0.60
-0.17

XD
95.0
95.0
97.0
1.15
0.118
95.67
0.19
-0.58

XF
92.0
90.0
95.0
2.52
0.295
92.33
-0.39
-1.15

XG
".O
101.0
99.0
1.15
0.118
99.67
0.88
0.12

XI








•
XK
100.0
98.0
103.0
2.52
0.295
100.33
1.00
0.23

XO









Y
94.0
102.0
101.0
4.36
0.473
99.00
0.77
0.00

Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag La
45.33
X
QX
78.67
U
CJ
86.67
W
50.00
X
UP
80.00
U
NO
87.00
e:
72.00
X
TC
80.67

M
87.00
B<
76.33
u
SF
81.67

TD
87.67
n
77.00
u
AJ
85.00

RZ
87.67
Sf
78.00
li
NK
85.67

BK
88.00
L'
• = No data submitted

TAG SYMBOLS

tr
s Above control Iim;
0 = Insufficient data

x = Determined to be an outlier

= Below control lim:
-------
38 / 37	ESD-LV Performance Evaluation: Gamma in Water, 7-Nov-1997
.. 	 	
/•	"	'	1 ¦ ¦ —		 ¦	...	.	;	. --H
Bariiun-133
Data sorted by Laboratory Average
Average
Tag
Lab
Average
Tag
Lab
Average
Tag
Lab
88.00

FE
94.00

JM
97.67

PD
88.33

UY
94.00

IU
97.67

JY
88.67

SR
94.00

HE
97.67

EL
88.67

PW
94.33

QU
98.00

XC
88.67

A
94.33

L
98.00

FL
89.00

RO
94.33

BM
98.33

VO
89.00

PB
94.33

BB
98.33

VH
89.00

CE
94.33

AL
98.33

PX
89.33

SC
94.67

BO
98.33

N
89.33

DH
95.00

VM
98.67

OT
89.33

AY
95.00

QW
98.67

O
89.67

RX
95.00

P
98.67

DT
89.67

NH
95.00

MP
99.00

Y
90.00

LR
95.33

QP
99.00

OM
90.67

SX
95.33

E
99.33

HL
90.67

cx
95.33

BL
99.67

XG
91.00

NP
95.67

XD
99.67

QM
91.00

GL
95.67

GI
99.67

LF
91.33

AU
95.67

FJ
99.67

DO
91.67

V8
95.67

D
100.00

WJ
91.67

MT
96.00

W
100.00

QT
91.67

BH
96.00

KX
100.00

I
92.00

XA
96.00

HI
100.00

AW
92.00

PM
96.00

GQ
100.00

AF
92.00

EW
96.00

AK
100.33

XK
92.33

XF
96.33

S
100.33

sv
92.33

X
96.33

MX
100.33

SM
92.33

SN
96.33

K
100.33

MV
92.33

SD
96.33

DR
100.33

BA
92.33

R
96.67

OA
101.67

ux
92.33

KL
96.67

JE
101.67

TO
92.33

HK
96.67

DE
101.67

KH
92.33

AH
96.67

BN
102.67

C
92.67

XB
97.00

WR
103.00

ws
92.67

VI
97.00

TQ
104.00

CP
92.67

SZ
97.00

AZ
106.00

LE
92.67

JS
97.33

T
107.67

EB
92.67

CO
97.33

CA
112.00

UR
93.33

Q
97.33

AE
114.67

VA
93.33

DD
97.67

WW
115.00

wo
93.67

NJ
• 97.67

SI
200.33
1630.00
X
X
WD
VE
• 5 No data submitted	TAG SYMBOLS	ft = Above control limit
0 s Insufficient data	x = Determined to be an outlier	^ 5 Below control limit ^
-------
ESD-LV Performance Evaluation: Gamma in Water, 7-Nov-1997	37 / 37
Barium-133
% responding labs	Frequency distribution	
jo-		-
0
1T Bw|fMllfBlill
-4	-2	0
IfllffiF.::
¦ , ¦ B
-6	-4	-2	0+2+4
Normalized deviation of the mean from the known value
% responding labs	Frequency distribution
10-
_ -f.il.jlllM-
0 ' ,	.	T ~T "~*. "	T "	j- j — ,	,	,"
-6	-4	-2	0	+2	+4	+A
Normalized deviation of the mean from the grand average
-------