vvEPA
            United States
            Environmental Protection
            Agency
            Office of Research and
            Development
            Washington, DC 20460
EPA/600/R-94/078
February 1994
Uranium-Radium
in Water Performance
Evaluation Study

A Statistical Evaluation of
the February  11,1994 Data
                                          0014nrd94-078

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         Uranium-Radium in Water
       Performance Evaluation Study
            February 11, 1994
      Environmental Protection Agency
Environmental Monitoring Systems Laboratory
            Las Vegas, Nevada

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            UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
                        OFFICE OF RESEARCH AND DEVELOPMENT
               ENVIRONMENTAL MONITORING SYSTEMS LABORATORY-LAS VEGAS
                                  P.O. BOX 93478
                            LAS VEGAS, NEVADA 89193-3478
                                  (702/798-2100)
Dear Participant,
   Enclosed are the results of the Nuclear Radiation Assessment Division (EMSL-LV)
Performance Evaluation Study for Uranium-Radium in Water; February 1 1, 1994.

   The known value for each analysis was determined by gravimetric methods,
checked by chemical analyses performed by EMSL-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 George Dilbeck at  702/798-2104 or Patricia Honsa at 702/798-2141 .
                                          Sincerely,
                                          George Dilbeck
                                          Chemist
                                          Radioanalysis Branch
Enclosure

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               NOTICE

This material has been funded wholly by
the U.S. Environmental Protection Agency.
It has been subject to the Agency's review,
and has been approved for publication as
an EPA document.

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     EMSL-LV Performance Evaluation: Uranium-Radium in Water, ll-Feb-1994  1/23


   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. 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. The eighth and ninth columns are the differences from
the mean of all non-outliers and from the known value, respectively. 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.

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2/23  EMSL-LV Performance Evaluation: Uranium-Radium in Water, ll-Feb-1994
     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 George Dilbeck, EMSL-LV, 702/798-2104.

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        EMSL-LV Performance Evaluation: Uranium-Radium in Water, ll-Feb-1994   3/23
Uranium (Natural)                  Statistical Svunmary                      198 Participants
The known value of this nuclide is 10.1 pCi/1 with an expected precision of 3.0; the control limits
are 4.9 to 15.3; the warning regions are 4.9 to 6.6 and 13.6 to 15.3
57(28.8 %) Failed to respond .%
13(6.6%) Outliers '
4(2.O %) Out of control
     but not an outlier


        Statistic
                120(60.6 %) Within all limits
Respondents
4(2.0 %) 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
      9.92
      3.75
     14.09
     37.85
     -1.80
     -0.05
      9.90
     -1.98
     -0.05
 Grand Avg 9.64
             1.70
             2.90
            17.65
            -4.54
            -0.27
             9.88
            -2.15
            -0.13
17(12.1 %) More than 3 norm..S.D.
4(2.8 %) Between 2 and 3 norm. S.D
            1O4(73.8 %) Within 1 norm. S.D.
                           of known value
     16(11.3 %) Between 1 and 2 norm. S.D.

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4/23 EMSL-LV Performance Evaluation: Uranium-Radium in Water, ll-Feb-1994
Uranium (Natural)
Lab Res. 1 Res. 2
A
AA
AE
AF
AI
AJ
AK
AL
AP
AU
AW
AZ
BA
BC
BG
BG
BG
BH
BK
BL
BM
BN
BO
C
CA
CE
CG
CJ
CK
CM
CO
CQ
CS
CX
D
DB
DE
DI
DO
DP
DT
DZ
E
EB
EH
• =
0 s
4.4
" ,."•"'•, * V
9.3
11.8
10
10.5
11.3
10.4
10.4
9.8
9.3
8.4
8.8
10.1
10.0
12.1
11.6

9.3
8.2
8.9
9.9
10.1
8.5
10.3
9.8
10.0
10.2
9.4

10.7
9.8
9.8
10.3
10.2

10.7

6.3
9.5
9.4
9.1

4.0
9.7
11.9
1.0
10.9
10.5
10.2
10.5
9.7
7.0
9.9
9.6
9.6
10.0
11.1
10.8
' ,• -'\
9.9
8.7
8.1
9.3
9.8
8.2
9.4
9.8
9.2
10.1
10.1

10.7
10.1
9.9
9.8
10.2

10.6

6.8
10.0
9.3
8.4

Res. 3
4.0
9.5
10.8
1.0
10.3
12.6
10.0
10.4
9.5
8.0
8.6
8.7
9.7
10.0
10.6
10.7
'"'\\-' ', ;-
9.5
9.6
7.1
9.4
9.3
7.5
9.7
9.6
8.8
9.9
11.7

10.7
9.9
9.9
9.8
10.3

10.2
•
8.8
10.7
9.8
8.4
- '
No data submitted
Insufficient
data
x =
Exper.
Sigma
0.23
0.20
0.61
0.00
0.31
1.06
0.20
0.06
0.15
1.15
0.81
0.49
0.26
0.00
0.76
0.49

0.31
0.71
0.90
0.32
0.40
0.51
0.46
0.12
0.61
0.15
1.18

0.00
0.15
0.06
0.29
0.06

0.26

1.32
0.60
0.26
0.40

Rnganal
(R + SR) Average
0.079
0.079
0.217
0*000
0.118

0.413
0.079
0.020
0.059
0.453
0.295
0.177
0.098
0.000
0.295
0.177

0.118
0.276
0.354
0.118
0.158
0.197
0.177
0.039
0.236
0.059
0.453

0.000
0.059
0.020
0.098
0.020

0.098

0.492
0.236
0.098
0.138

4.13
9.50
11.50
1.00
10.57
, ,"'- s
11.47
10.20
10.43
9.67
8.10
8.97
9.03
9.80
10.00
11.27
11.03
y ' '*• f s =:
9.57
8.83
8.03
9.53
9.73
8.07
9.80
9.73
9.33
10.07
10.40
- \ v, 	
10.70
9.93
9.87
9.97
10.23

10.50

7.30
10.07
9.50
8.63

TAG SYMBOLS
Determined
to be an
outlier
Normalized deviation
(grand-avg) (known) Tag
-3.18

-0.08
1.07
-499
0.53
"5 * -••
1.05
0.32
0.46
0.01
-0.89
-0.39
-0.35
0.09
0.21
0.94
0.80
- , ' ' , ; , '-. -
-0.04
-0.47
-0.93
-0.06
0.05
-0.91
0.09
0.05
-0.18
0.25
0.44
, ' - -'- - ' -\ '• -
0.61
0.17
0.13
0.19
0.34

0.50

-1.35
0.25
-0.08
-0.58
' ' fi "''"''
ft = Above
U = Below
-3.44 U
: - ; ' : •' '
-0.35
0.81
-6.26 x
0.27
• ,
0.79
0.06
0.19
-0.25
-1.15
-0.65
-0.62
-0.17
-0.06
0.67
0.54
* •"• '
-0.31
-0.73
-1.19
-0.33
-0.21
-1.17
-0.17
-0.21
-0.44
-0.02
0.17
<• '?' , V'-
0.35
-0.10
-0.13
-0.08
0.08
•
0.23
,» -
-1.62
-0.02
-0.35
-0.85
" ''' "' - '>/ .
control limit
control limit

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r. 	 ;s
EMSL-LV Performance Evaluation: Uranium-Radium in Water, ll-Feb-1994 5/23
Uranium (Natural)

Lab
EQ<

EPv
ER
FE
i F Jf" ~
-FK;'
FN

- jpp-
FZ
"GG.i
GN
GO
GQ
'.HE,-,
HK
HL
HP
HU
I
~LV\
ID
IE
J
' "" lUii'll "**"

Res. 1
v* ;-:--/;>f-^

x, ' ;^ '- Ts >;
9.1
9.5
f:K§$$&
% -'!t • " "*^\if
10.1

' O %"?5"*^
10.4
" --X' * s v. ^ *" \ s^ ^\ S
7^5
10.4
10.4
"'~*,^ 21;7A-}
9.3
9.3
10.2
4.7
12.6
„„. 5,™.™ ^ ^ .5
9.2
10.4
10.4
w •? ^V^"-^ \ww\xwiycv>v

Res. 2
;> v "^: ^5"-
jS «• *« ^ S S
i " V X** "
9.2
9.2
;^l2L9j|:
s^ltS^I^
$.6

~x^^S;5pt;>^
11.1
|X.-^Alo--
7;7 -
10.3
	 9.8^ 	
TS $foWT\\-
9.2
10.4
9.6
4.8
10.9
;^ ";y\ ?>E:V^7
9.8
11.1
9.9
™^''%^ ^•\>ww'' ^x^^"^^; v

Res. 3
X* "
*• ^

1 ' . ->x\' ,
9.2
_.,9.5_
;'^:2.9^
>|fS^I;^
8.8

^•"-"V> ~
10.9
v!V v V ^
7.9
10.8
10.1
^$6$;'
10.6
11.7
11.1
4.9
9.6
73.f\ 	 ''
9.9
10.6
10.1
;^0'\ ^s^ %w%
1 "- JJjjJ "'" \tX ""•'• " ^*'ihG*'") ^-Y\ x^--"^^'1" -T^ "** - ^c- ;*^ "i.!"-"
j V
1 I;JG>
JK
JN
JP
JS

* Jtr;:
,-«IX
JY
K

•";XFx
KH
KL
L
LA
LB
LG
LH
LM
LS
LT
LZ-;
• =
0 B
v % •• ,,X •• i •••• •.
-\" i «,' ,>Y* •>
9.6
8.8
10.0
8.1

f " -*\- '' ^
'••.__.,,, •• \ ""• \ \% "
12.6
9.6

/^ ' .*s :,"v-?~"'\ V
10.0

10.1


3.0
11.5


8.5
;^ —: 7.19.9, ;<
"• •, ' s •. ^ % ^ \v X1
s . >~*--' \l>&;- ' ,
10.3
9.2
9.8
8.1

-- ' '' '-\x%
, ! ,!- '•.'- ;' ,-' -,
13.2
11.5

h^'r'*!^
	 9.7 ^

10.3
-
1 - ''•; .
3.0
12.1

s •. s>1 ^X1- s \
11.7
"v";;!^;^^;":
•»^ *• t -. ^
^ %""•• ""^
10.1
10.5
10.1
8.1

;~x\ , '•
!" ,, *''> '>
12.9
10.5

r-" ^ 3\\-
9.9

10.5


; 3.0
11.2


9.8
r-« ,19.7\
No data submitted
Insufficient
data
x =
Exper.
Sigma
•- -* - " "" " ^^v?'

" , " o" X" ""^ " "
0.06
0.17
J/;^p6';y
^^\l^^
0.66


0.36
•\v^"-/
0.20
0.26
0.30
" ' -QM
0.78
1.20
0.75
0.10
1.50

0.38
0.36
0.25
V?X''?^ 'vO'1"'1'" ^••'•^ ""X11
tf-"""' ^ v ^ **" ^ ^,"
0 •>% •« %

0.36
0.89
0.15
0.00


" l •• ^ s -.-••-
0.30
0.95

V>'" ,"'->, v,\ •?"
0.15

0.20


0.00
0.46

--
1.61
" 0.10
Rng anal
(R + SR)
X'«V;.s'-. --'-

' '""'- ;"" '*'->',!
0.020
0.059
; ;p.o26YI^
:^^!^Sr!
0.256

v<;^\^i;:»''
0.138
; , ,' v"ws»^ t^
0.079
0.098
0.118
"";OJ36 - ""
0.276
0.473
0.295
0.039
0.591
'--• j; * . ' \ ~
0.138
0.138
0.098
^ ^s" ^^XT^^ ^ ^ ^. --v
^ °'v\\V. ** * ^

-%- " ,.
0.138
0.335
0.059
0.000



0.118
0.374

; i : -\«-T-
0.059

0.079


OJOOO
0.177


0.630
Q-039 J
Normalized deviation
Average
^y%v^

..j^H^x
9.17
9.40
:\^£M;
:^i^^
9.50

" ViA\i;"'-;-^
10.80
'»Vx'V<
7.70
10.50
10.10
'"' : 20:87f
9.70
10.47
10.30
4.80
11.03
r "- \f ***- ' * -
9.63
10.70
10.13
^^""••^''''^^^S-''^^
V j " ^*^^^ ^
^\1' *"%"«. •.,•.
^ N t •- %. ^ O
10.00
9.50
9.97
8.10

ft" A^-::

12.90
10.53

T>"'. ,^-xs^'1 \
9.87

10.30
,!- " " V
-" ^ •- " , % v
3.00
11.60

v
10.00
= ^19.80^
TAG SYMBOLS
Determined
to be an outlier
(grand-avg) (known) Tag
fe'^5^T,4f

;")f>,--it/$V' :3\\'Vi
-0.27
-0.14
^•K^©^"
1*^'\"1 "" S s ^ XC^<4-X^ "-^ ''^'"''^•^rf; ^ V"
^ ^oX w^v^-^t s '^••SVS '"•"^ "" %
-0.08

.'4^t -I Vc"-^"^l ". ""* ','
0.67
rA>-V- ^vJ;.^.
-1.12
0.50
,TO_9-,26,_ 	
Crr^f6»48'?*^'"
0.03
0.48
0.38
-2.80
	 0.80 	
"" N " "s1- N ••••" x" '''', "" "\ "\ ^T"""1 ^ w "
0.00
0.61
0.28
"o ^X" -'•!'' ^-^.•••••••^.'•^•'^^M'"' ^;^*-
;;^y- \ -" ^7^ "•;"-" -""" "V^"
X s ^ ""w* *" * "• f •,•• o"1 \ •> s % '
"«" • ™*y! \ ';>'« . -
0.21
-0.08
0.19
-0.89

'^K.^^ '>.-, s''-f.
;x^ ' •-. i"l\- , - - «C
1.88
0.51

;r*° :4"f:;, .,^'i*^f'.
0.13

0.38

,- s ' -"" ° \
:: -3&
1.13

•• ' •• •.s " - ^
0.21
^-; .XSiST^r;^
tt = Above
Ji s Below
&&:'>'•'*,.•- 1

,VV; > -" ;\->(- .
-0.54
-0.40
$[j>£ -;>xT"
^^t9\*:^
-0.35

;-.;' " -'>}«l\-
0.40
, '\ ' .-,-#•'-
-1.39
0.23
0.00
^6l22-"Vx" '
-0.23
0.21
0.12
-3.06 U
0.54
--xr ,-- " ~V'
-0.27
0.35
0.02
™ s ^\^s™\r*X1 •*ws-5X' ^
N-^;\V\%- - ° "VI* *"X
•. s \ i ' "*
; ' -• , ;-"•
-0.06
-0.35
-0.08
jl.15^ ^__

~.": >• r:::-^*:^
j"^ "" s ,, s X^ ^
^ " 5 " %
1.62
0.25

^rlx/V4^-1^-)
-0.13
• :
0.12
, ,:-V;-- ~'»'-
s."-'^ ' • ,\
-4.10 x
0.87
•
- ,-,'-, V* :
-0.06
-,?,fiC60"- ."'?>< ^;
control limit
control limit

-------
6/23 EMSL-LV Performance Evaluation: Uranium-Radium in Water, ll-Feb-1994
Uranium (Natural)
Lab Res. 1 Res. 2
M
MN
MS
MY
N
NA
NO
NG
NH
NJ
NK
NO
NT
OB
OF
OK
OS
OX
OY
OZ
P
PB
PC
PE
PG
PP
PQ
PT
PV
PW
PX
PY
Q
QB
QJ
QM
QQ
QU
QX
QZ
R
RC
RD
RF
RG
• =
.0-

10.0
9.4
8.6

13.8
10.0
10.0
10.4
8.9
7.2
9.2
8.8

8.8
7.1
11.4
8.6
12.1
10.2
32.2


22.4
10.2
6.7
5.1
13.3
22.7
3.8
2.2
9.5
10.1
5.0
7.7
8.5
10.5
9.7
10.8


11.7

9.9
9.0
9.4
>' ,v -- -
15.1
10.2
10.0
9.3
10.0
7.1
9.0
8.6
, ;- ,
10.2
6.6
10.6
8.6
12.6
10.2
34.1

- '„ ' \
22.4
10.1
6.8
5.3
12.8
21,7
5.3
2.3
7.5
11.1
5.1
9.4
8.4
10.4
6.5
11.3
*

11.3
Res. 3

10.2
9.7
8.3

14.8
10.5
10.0
10.2
11.1
7.0
9.0
8.3
- Y " ' *•
8.2
6.3
11.8
9.3
14.5
10.4
36.1


22.5
9.9
7.2
5.5
13.1
22,3
3.6
•' ',1.0'
8.5
11.3
5.6
12.5
8.3
10.3
8.1
13.3


12.2
No data submitted
Insufficient
data
x =
Exper. Rng anal Normalized deviation
Sigma (R + SR) Average (grand-avg) (known) Tag

0.15
0.35
0.57

0.68
0.25
0.00
0.59
1.10
0.10
0.12
0.25

1.03
0.40
0.61
0.40
1.27
0.12
1.95


0.06
0.15
0.26
0.20
0.25
0.60
0.93
0.21
1.00
0.64
0.32
2.43
0.10
0.10
1.60
1.32


0.45

0.059
0.138
0.217

0.256
0.098
0.000
0.217
0.433
0.039
0.039
0.098

0.394
0.158
0.236
0.138
0.473
0.039
0.768


0.020
0.059
0.098
0.079
0.098
0197
0.335
0.079
0.394
0.236
0.118
0.945
0.039
0.039
0.630
0.492


0.177

10.03
9.37
8.77
' \
14.57
10.23
10.00
9.97
10.00
7.10
9.07
8.57
\f
9.07
6.67
11.27
8.83
13.07
10.27
3413

>. „
22*43
10.07
6.90
5.30
13.07
,/ 22,23 '',
4.23
' ' ,", 2J3
8.50
10.83
5.23
9.87
8.40
10.40
8.10
11.80


11.73
TAG SYMBOLS
Determined
to be an
outlier
11 0 -• '*' •"
0.23
-0.16
-0.51

2.84
0.34
0.21
0.19
0.21
-1.47
-0.33
-0.62
" ' - '
-0.33
-1.72
0.94
-0.47
1.98
0.36
14,14


139
0.25
-1.58
-2.51
1.98
\fc2f" v
-3.12
-'•4*33' ; }•
-0.66
0.69
-2.55
0.13
-0.72
0.44
-0.89
1.25


1.21
ft = Above
U = Below
' ' -\V *
-0.04
- . •
-0.42
-0.77
'• • ': \ • ' :
2.58
0.08
-0.06
-0.08
-0.06
-1.73
-0.60
-0.89
;*; ,«K
-0.60
-1.98
0.67
-0.73
1.71
0.10
13.88 X
-•' ^ •'
:, ~ - ' • *,
7.12 x
-0.02
-1.85
-2.77
1.71
-3.39 If
-4.60 x.
-0.92
0.42
-2.81
-0.13
-0.98
0.17
-1.15
0.98
' ' : , •
•
0.94
control limit
control limit

-------

EMSL-LV Performance Evaluation: Uranium-Radium in Water, ll-Feb-1994 7/23
Uranium (Natural)
Lab
RK
•. ss •.; VAW
RL
RM
RP
RR
RV

RW
,RX\-
RZ
S
-"iaj^x*
*, SAx>f
sc
SD
SF
SI
. --x %
SL
SM
SO
ss
ST
SW
sx
sz
T
•- v.
TA
TD
TE
TG
-THf
TI

"TO.
TL

*TNs-
TQ
If-
TR
TS
TU
TV
TW
u
UB
UE
UI
""TTT *
lUli
-UN;
• =
0 s
Res. 1
11.2
-.•A s •. w -. % w ,}VA,yt>.sA>. w,\^
- i !y 2X2.3 \f*
10.1
9.4
10.5
10.2

\ , * s*\\x\," ,X\v"
,- x'^S-^-Tvy-x^
9.7 ~
9.3
x™ - '••??•„ x, CxxH>x , s'x.":,, "f;
11.0
7.8
10.0
9.6
•.f. -.^ •: •: " \ 1 W" "•
--,' v^., '&£>
li.i
10.1
9.3
9.7
9.7
13.2
9.7
11.2

,£' * /", * . ' \
9.7
4.5
9.9
|- ^Vc^^l?
9.9


10.8

>;:-\^\^;;^
8.4

••; •• "\vx^ ""* ? "--.-S^
9.3
11.2


0.1

9.6
4.3
, «,,,;. , ,,,>„., J ~,v.,,,,v.x ,
/•s ^ ^.;>, ,-'-•- "
^V;^,i&o^;:
Res. 2
11.0
v,™ •. •.v.^-.v.^ %w.s ^ ss s 11
1 %;^ 2,3:\';
8.6
9.4
10.2
9.1
"- ^ „•"• "•' 5 ^ •• s -^

^ij-'v^v^
9.5
9.3
^sv,,,™^^^-,,!,^
iXx-j-jsXA \,^0!^4^
13.4
6.7
9.9
10.1
;.•• ^ %s* w ^ f. --V-.
V-\-V," -'°- f
12.4
10.8
9.5
10.0
9.2
9.0
9.3
10.7

V'iX " -~\ \
9.6
5.2
10.0
- \ v %, - •• «
10.1

X«X, -'Uj YV>
9.1

^x \^>T r;
9.0

"}•?•# X- -"- :
11.9
11.0


0.1

9.3
4.3
---^,x>xx-;>, -;x;
"V : "•>."• ' •'•
^1?16;9f<:
Res. 3
11.4
xj%%w •- ww.\\ ^^^^^^^ ^\ ^ y. pv
^-"^Xx2i3^-
9.2
9.4
9.9
14.9

i^^^x;-; o
^r^j-V" '•x • "»t«» ,• ~ -~
"" 	 9.8
9.2
™»™ ,« ,^. ^>-!>- x ;™s-^ -
*™,V -' *^~ ' "%4li - x '
10.4
8.0
9.8
9.7
•. ^ -, ^* t - ^
- ', >" °t v -
10.9
11.2
9.5
9.6
10.5
12.0
9.7
11.2

0 i ,t-\\ ;';";f'-
9.7
5.6
10.0
V,0 s\ --0: *
\VS '\ ^ v"\1' V" "* 0 s
9.7

^XX^'s^V x^-{=.
9.3

^\^"^- V>^-?-
8.7

'-~-'\x " -'
9.0
11.1


0.1

10.0
4.6
"x"^?'" " XWi'" "\-
v %"- % " ^ ••
f>'Vil8.0^
No data submitted
Insufficient
data
X ~
Exper.
Rng anal
Sigma (R + SR) Average
0.20
•. ., \X'1'1'1'' ' ' •. •. ^
- -\\0.00\"f!
0.75
0.00
0.30
3.08

\- ^> x'* -! - 5 -• '
-. ^ X*"-- ^ V!; ^ s "• s v
0.15
0.06
"- -", TV^T "- ' ",'
"x-r- "' - -X'~'
1.59
0.70
0.10
0.26
\ ^-.v -.-.^ \ ••* \
;-- \,,vv
0.81
0.56
0.12
0.21
0.66
2.16
0.23
0.29

- ,
0.06
0.56
0.06
V /" ^> , i *
" \ x % •• " ! "" % "
0.20

- SX- " , s-^*
0.93

'••.- : i ^ \' s •.-.^•.^
0.30


1.59
0.10


0.00

0.35
0.17
X " •. X, v %% %

r --:i;52' ^
0.079
s -.sy -.v ^ «., ^
-50.000,.
0.295
0.000
0.118
1.270

^ ''X->:t'x1'J;:'1^\0:!. ••
-*^\\^ 0 *"*., \
6.059
0.020
\"x"v - *>-••""
CX !\X ,, , ,
0.591
0.256
0.039
0.098
s s., w^-0 v^ % ^ ••

0.295
0.217
0.039
0.079
0.256
0.827
0.079
0.098

!- \"
0.020
0.217
0.020

0.079


0.335


0.118


0.571
0.039


0.000

0.138
0.059
- , -•*

0.591
11.20
-. •,S\SV. -.S _•- -Avy. yv, MUUt. «\ •. -.
^•^yS^iSO^
9.30
9.40
10.20
11.40

•^;Jfc^s^
,:^cx f ; v^,^'"^
9.67
9.27
V.;,,,™.,,,, ,^™^«>VSK.,,X,™ , ^
-'T^ "/K^"^.^ '' .x^J
11.60
7.50
9.90
9.80
v -^ ^^-^v^ •- wv "* O ""
,< " .V-^S; '" ,v.
11.47
10.70
9.43
9.77
9.80
11.40
9.57
11.03

1 T,' \ , ' ' ;' -'
9.67
5.10
9.97
j,;' U^^xxx:;^
9.90

lv •^^r"-'^,-^,'
9.73

^'^v^^!^*:
8.70

°x Y -'- :;-
10.07
11.10


0.10

9.63
4.40
-x *^-Y --- ^*' v-
\ J
:, '18.68:-
TAG SYMBOLS
Determined
to be an
outlier
Normalized deviation
(grand-avg) (known) Tag
0.90
w^v, ^^^^^^^^ sw •. ^^ ,J^vi jvw-. \« -.-.•.•.
;}i!i.74.24^5^H'
-0.20
-0.14
0.32
1.02

A^WU"iS«
iiltHf.';^^^'";
o.oi
-0.22
,^T;*'?"I!*.i"r^~>!V'1,^ ~v?
-v>,;s-V""::'::'" , ,^^.s; --'-'**''
1.13
-1.24
0.15
0.09
<•"'••.. % ^%^•.s^ •".•>•.•••••• ••-. •«
" ' " •." "S ^vs V ^ ,% ^
1.05
0.61
-0.12
0.07
0.09
1.02
-0.04
0.80

s "- x\'"-1- s v W^ ^''"'"'s'.
0.01
-2.62
0.19
fiv;^4kbk^
0.15

,X'V\';A^:/!,n;
0.05

'^^"^fiPy^r-
-0.54

•\-" , ,x-\h.^ -\x
0.25
0.84


-5.51

0.00
-3.03
x-o-*- , :;-,,.^--'\- ^
', \- h,'\" - sv, %
>:'v>--4;04.Sl-^_
It = Above
U = Below
0.64
\ •. J •. \A,V,%%%V, -,SW • ^
f4l6A'T\X x^i
-0.46
-0.40
0.06
0.75

-^ v .'3 :::;•',''.•
X'^S>\'™"^» -x
-0.25
-0.48
rT^Tr^'^-x,11" '"' '*
X!,~i-,, ,X",\»--
0.87
-1.50
-0.12
-0.17
•..• ^\ •. \j>% ^ ^ \
">:r-: -J>.-'« Vi
0.79
0.35
-0.38
-0.19
-0.17
0.75
-0.31
0.54

", • . , . ;!«~11
-0.25
-2.89
-0.08
^wg>icrvv
-0.12

'^"s--,1- * '
-0.21

s N x \ * - N 4 .,
-0.81

; , \',~' • ' •-
-0.02
0.58
• v
•
-5.77 x
•
-0.27
-3.29 II
, "V.V., X* , ,,,„ ^, ,„„,., , ^,
1 "°,* •
';;3i77 ; r:/x :
control limit
control limit

-------
8/23 EMSL-LV Performance Evaluation: Uranium-Radium in Water, ll-Feb-1994
Uranium (Natural)
Lab Res. 1 Res. 2
UP 7.3 7.6
UQ
US , .
UW 9.8 8.7
UZ 12.2 16.3
-VA1. .,/•,; - ":
VG 12.4 12.9
,,YH/'
VK ' , ••' ;;
VL . / ' ' - J' " '' - . • A'
» rik Y ' s ,. ..
VN
vq / .': ' ..-'.
W 10.3 10.2
WA - , , • -
X 10.7 10.5
Y 10.3 10.1
Z 9.8 9.7

Exper. Rng anal
Res. 3 Sigma (R + SR)
7.8 0.25 0.098

8.9 0.59 0.217
21.7 4.76 2.658
-';-,-, V -;-; ' -
12.8 0.26 0.098
:V*;; V-' ;.; . - >V
"' ' "• " * *
''',"' "" ' •" -.
-[',.-
9.8 0.26 0.098

10.2 0.25 0.098
9.8 0.25 0.098
10.4 0.38 0.138

Normalized deviation
Average (grand-avg) (known)
7.57 -1.20 -1.46


9.13 -0.29 -0.56
16,73 409 3.83
'-' - --''" \ ' :-'• •'' ' , -„ ': '-
12.70 1.77 1.50
, "'*•-, ,"•'*{<. ,-._. •• ^ S A.S" ^ v''*'1*/\ f" '
J-. •.; s v t V •• f t * ^ ^-, "• \ •• '
^'•',J?,'V :""'""' v.; , ^'''',
\\ %^ •• ,' ''f ', •• ^. ~~ ' t, 'f: ] '""' ^.-. S / „
'• - , '• '' : iff'
10.10 0.26 0.00

10.47 0.48 0.21
10.07 0.25 -0.02
9.97 0.19 -0.08

Tag
. ,~< ,
• •

x
; •; •


41
; ;*•'•
, *

» * ' '



Data sorted by Laboratory Average
Average Tag
0.10 x
1.00 x
2.13 x
2.30 x
2.93 x
3.00 x
4.13 U
4.23 U
4.40 U.
4.80 U
5.10
5.23
5.30
6.67
6.90
7.10
7.30
7.50
7.57
7.70
8.03
8.07
8.10
8.10
• = No data submitted
0 s Insufficient data
Lab Average Tag
U 8.10
AI 8.40
QB 8.50
RL 8.57
FJ 8.63
LG 8.70
A 8.77
Q 8.83
UI 8.83
HU 8.97
TE 9.03
QQ 9.07
PV 9.07
OX 9.13
PT 9.17
NT 9.27
DT 9.30
SD 9.33
UP 9.37
GN 9.40
BO 9.40
CE 9.43
R 9.50
JS 9.50
TAG SYMBOLS
Lab Average Tag
BA 9.50
QX 9.50
QJ 9.53
OF 9.57
EB 9.57
TQ 9.63
NA 9.63
BN 9.67
OZ 9.67
BC 9.67
BG 9.70
OS 9.73
OB 9.73
UW 9.73
ER 9.77
S 9-80
RM 9.80
CK 9.80
N 9.80
RP 9.87
FE 9.87
SS 9.87
JN 9.90
E 9.90
It s Above control
x = Determined to be an outlier U s Below control
Lab
AE
FN
C
sz
BM
ID
UE
TD
RZ
AZ
HK
TL
CJ
CA
ST
SW
SI
CG
BG
QU
KH
D
n
SF
limit
limit

-------



EMSL-LV Performance Evaluation: Uranium-Radium in Water, 11
Uranium (Natural)



-Feb-1994 9 / 23

Data sorted by Laboratory Average
Average Tag
9.93
9.97
9.97
9.97
9.97
9.97
10.00
10.00
10.00
10.00
10.00
10.03
10.07
10.07
10.07
10.07
10.07
10.10
10.10
10.13
10.20
10.20
10.23
% responding labs


|Q. ___________



-6 -4
Lab
CX
z
TG
NK
JP
DB
NO
NJ
LT
BG
JK
MS
Y
TS
PQ
DZ
CM
W
GQ
J
RR
AP
NH
Average Tag
10.23
10.27
10.30
10.30
10.40
10.40
10.43
10.47
10.47
10.50
10.50
10.53
10.57
10.70
10.70
10.70
10.80
10.83
11.03
11.03
11.03
11.10
11.20
Frequency distribution
•
g|~

•Mil
. . T— i.llllllill.


Lab Average
DE 11.27
PB 11.27
L 11.40
HP 11.40
QZ 11.47
CO 11.47
AW 11.50
X 11.60
HL 11.60
GO 11.73
DO 11.80
K 12.70
AJ 12.90
CS 13.07
SO 13.07
IE 14.57
FZ 16.63
QM 16.73
T 19.80
I 20.87
BK 22.23
TU 22.43
RK 34.13





•• _ •

+2
Tag Lab
OY
BH
SX
RV
SM
AL
AF
SC
LH
RG
RC
VG
JY
PW
P
NG
x UN
x UZ
x LZ
x HE
x PX
x PP
x PC





1

f4 +6
Normalized deviation of the mean from the known value
% responding labs


in-
.
° -6 T -4

• = No data submitted
0 = Insufficient data
Frequency distribution



Illl

Normalized deviation of the mean from




•T —
J2
the grand average
TAG SYMBOLS It =
x = Determined to be an outlier li =




1
i i T
+4 +6

Above control limit
Below control limit

-------
        EMSL-LV Performance Evaluation: Uranium-Radium in Water,  ll-Feb-1994  10/23
Radium-226                         Statistical Summary                      196 Participants
The known value of this nuclide is 19.9 pCi/1 with an expected precision of 3.0; the control limits
are 14.7 to 25.1; the warning regions are 14.7 to 16.4 and 23.4 to 25.1
71 (36.2 %) Failed to respond .
1O(5.1 %) Outliers	
14(7.1 %) Out of control	
      but not an outlier


        Statistic
                . 94(48.0 %) Within all limits
Respondents
7(3.6 %) 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
     20.92
      7.54
     56.83
     36.03
      5.14
      0.14
     19.50
     -2.01
     -0.05
Grand Avg 19.39
             3.51
            12.34
            18.11
            -2.56
            -0.15
            19.40
            -2.51
            -0.14
24(19.2 %) More than 3 norm. S.D.
7(5.6 %) Between 2 and 3 norm. S.D
            .69(55.2 %) Within 1 norm. S.D.
            •               of known value
               Between 1 and 2 norm. S.D.

-------
11/23 EMSL-LV Performance Evaluation: Uranium-Radium in Water, ll-Feb-1994
Radium-226
Lab
A
AA
AE
AF
AI
AJ
AK
AL
AP
AU
AW
AZ
BA
BC
BG
BH
BK
BL
BM
BN
BO
C
CA
CE
CG
CJ
CK
CM
CO
CQ
cs
ex
D
DB
DE
DI
DO
DP
DT
DZ
E
EB
EH
EO
EP
• =
.0-
Res. 1
19.9

21.4
19.4

17.7

18.3
17.1

17.9
17.4
22.1
17.7
29.5
18.0
19.4

17.9
21.6
18.9
19.4
20.9
18.5
18.0
20.0
17.0



20.2


16.0
23.1



21.6
22.1
18.6
20.2

18.0
15.1
Res. 2
19.6

21.6
19.5

18.2

18.4
17.3

17.5
17.9
22.8
17.7
29.2
19.7
20.0

17.9
20.6
18.5
19.2
18.0
17.0
18.5
22.0
18.0



20.8
' * > ' - >

16.1
23.1



20.6
21.1
18.6
19.4

19.1
15.1
Res. 3
19.6

20.9
18.7
-.' -.
18.5
•''"••"*' .\i
19.2
17.4
\t <*•'*' - - *
17.7
18.1
22.8
17.5
28.7
17.0
19.3

18.1
19.6
17.7
19.0
"19.3
16.9
20.2
21.0
18.0

•'• '

20.3
, / > ^ •
-*
17.5
23.2



22.3
21.5
18.0
20.2

20.6
14.8
No data submitted
Insufficient
data
x =
Exper. Rng anal Normalized deviation
Sigma (R + SR) Average (grand-avg) (known) Tag
0.17

0.36
0.44

0.40

0.49
0.15

0.20
0.36
0.40
0.12
0.40
1.37
0.38

0.12
1.00
0.61
0.20
1.45
0.90
1.15
1.00
0.58



0.32


0.84
0.06



0.85
0.50
0.35
0.46

1.31
0.17
0.059

0.138
0.158

0.158

0.177
0.059

0.079
0.138
0.138
0.039
0.158
0.532
0.138

0.039
0.394
0.236
0.079
0.571
0.315
0.433
0.394
0.197



0.118


0.295
0.020



0.335
0.197
0.118
0.158

0.512
0.059
19.70

21.30
19.20
-
18.13
' ; ' t
18.63
17.27
''.--' ''"• , * •• •-
17.70
17.80
22.57
17.63
29.13
18.23
19.57

17.97
20.60
18.37
19.20
19.40
17.47
18.90
21.00
17.67
" } ' '"',"'-
'/ V

20.43

--.'/ '"-'- -
16.53
23.13



21.50
21.57
18.40
19.93

19.23
15.00
TAG SYMBOLS
Determined
to be an
outlier
0.18

1.10
-0.11

-0.73
: -i\.". ; "'
-0.44
-1.23
'- " - * ,' ' "•
-0.98
-0.92
1.83
-1.01
5.63
-0.67
0.10

-0.82
0.70
-0.59
-0.11
0.01
-1.11
-0.28
0.93
-0.99

- "-: • ,';' - ,-

0.60


-1.65
2.16



1.22
1.26
-0.57
0.31

-0.09
-2.53
ft = Above
U = Below
-0.12
' ', ' / »"
0^81
-0.40
' - , ; *
-1.02
." "' \ - -•
-0.73
-1.52
• -:"-'- • -
-1.27
-1.21
1.54
-1.31
5.33 It
-0.96
-0.19
"*- V « "
-1.12
0.40
-0.89
-0.40
-0.29
-1.40
-0.58
0.64
-1.29
,, -;", '-• \ • :,
•- '
•- ,' * •
0.31
"'.„'' , *
' , '- -, , '-'» =
-1.94
1.87
•
•
*
0.92
0.96
-0.87
0.02
•
-0.38
-2.83
control limit
control limit

-------
EMSL-LV Performance Evaluation: Uranium-Radium in Water, ll-Feb-1994 12/23
Radium-226
Lab
ER
FE
FJ
FK
FN
FP -
FZ

GG
GN
GO
GQ
^-••-••JtUlS*
HK
HL
HP
HU
I
- ** \'*
LA-
ID

IE
J
JE
JG

JK
JN
*.' JP* •
JS

"JUV
J*
JY
K
* KF
.U-B.
KH
KL
L
LA
LB
LG
LH
LM
LS
LT
LZ
M

* MlV
ITUX
• =
0 s
Res. 1
19.9
25.6
-"is
- \*^V V is
19.3
\~rj^,V^--,
.\l"?:j>.2%-

,, V>;~ ** '"^"^.i
13.9
21.9
16.0
- " " 39.3 >
19.6
19.1
18.3
19.9
21.1
~~^-.Vs "^v.-.^ ^V-X^V^V
t. \ "«S-- ^ - 1* -
18.2

^ V" s -- "\\
16.5
v, -,« 'X^^;,
15.0

Res. 2 Res. 3
19.2
23.6
- U X-'^\V, \\ ! 5^
-vcu^-., 't -y
20.3
^ '^^^^^l: Y
^,-\-"3i8~\,?^"-f

^,-4~>^,,, \-,j'i\,!
13.8
21.2
16.2
39.9
20.6
19.2
21.3
19.8
23.5
% •. v^''\^ %•*; ^ ••••^•••"v.'-v •• s. •>••
^ 0 N^^'-'.s'- ^ * " ^^%l:^s'. s X ^ ^
20.5

i\v'.,'''"''"
-- \ i, x^
13.5
21.7
16.2
42.2
19.7
19.1
20.9
19.8
21.5
^ v ^ -T"' - ' -
s^y, :\0!- ,
19.0


19.5
^>o:;-' ,''V
16.5

Exper.
Rnganal
Sigma (R + SR) Average
0.56
1.29
-v" '\ -\>'"\--
-' ; \ ^ , ^ ,:s
1.91

\ \ 0.70 ' ,


0.21
0.36
0.12
1.53
0.55
0.06
1.63
0.06
1.29
v V -" ^ - ^ •• 1- - -. <"
:\ 0'"--x\y'
1.17


1.97
-s\": x-~" 0\-i.. ,<-
1.70

0.217
0.473
^T*' ;t
<• --\V "" " ^^
0.728
•'t '' -' -'
!;"6s276,-

"> ; s ~~ "; :-
0.079
0.138
0.039
0.571
0.197
0.020
0.591
0.020
0.473
* - '-I""-- ^V" "v^
" ;ry**^s
0.453


0.728
t v ^ ^ •• ^
0.669

19.30
24.13
\V;~-?v-v'' ~!°f
-^v-4^ v^
20.87
- :* ..-, >--y ^ ^~
,^v Xv-' •'4"^47 '.

'- -1'*'^*> °fer" ,
13.73
21.60
16.13
40.47
19.97
19.13
20.17
19.83
22.03
•.•.-.•,-.« ;.^v xw ^ ^^ ^vgjjsyj- js
•. Xx "v "• •- •- •• * "•"•
19.23

S*{* -,' »-;. >s\:"
18.73
~"\~ i>- • - -;-?""'-•
14.87

Normalized deviation
(grand-avg) (known) Tag
-0.05
2.74
V?^>^v V\
h' ,\r "^ !"' -"
_,,,,,1°-8L.
;1' Vvt5-t^*v^'~-"~
•Y™~>o^.8i62 ^-- ""x

^t^\--V\^:.xr. v -•-
-3.27
1.28
-1.88
x- ^ .12.17 ^ ;
0.33
-0.15
0.45
0.26
1.53
-x^ ^- -SV" ;- ""^~^*:^'.\Wv---l
-x^-\'-' V ;-c\\i-;,\; -,
-0.09

,t.\L ,\v» - v! -'"",-
-0.38
V,^i-Vx 5>^-:, ^- ^,-
-2.61
«-. s ^ AW A * .••.•• s -, % v,
-0.35
2.44
*r''*'\";:.xi :
ci">Tvr'\«-*
0.56
- ~ • \V^c~ * V
*-8J9r -X""^ "

:;\-; _-.-- ,H,«" -_
-3.56 U
0.98
-2.17
11.87 x
0.04
-0.44
0.15
-0.04
1.23
."C •> y-*1* V ••xv'X''v>1*1 ^% "" >. -.

-0.38

.\,'V";"" ' ""•*:'
-0.67 	
-\V it-" -"">!• \;
-2.91

'•' ^: ;-"<^-~>" 'l-^-. r "- '° ' ,\~ '-'- \ > ,""'-- --^^v'v'V ^:fvL' v.:~V- •'.-V:~,\V-H <>•'.
18.0
, t;: ";*T;\; *;
20.1

\ s ^
Oc;-'39;9lv,,
• , xsCV::
	 _17.1
. y-jT >;"V V^Y'"'

18.4
18.6
17.9






20.2
18.3
8.4

- -^ \ %% C %.Cvk'x ^v
. " s N. •- v ss \ V - "s V^N . . .
18.9
^V>\^V\c;v ;
17.4

*, "" ^ ^ /^
f ^^40$!!^* •:
v«v^^v^->
^ ^_18.2_^
?;i™ ^frr^^cT^"^!

18.6
22.3
17.9
11





20.5
18.1
8.8

^ ^+X'NV ^ s •v-1^'' *• "i x\^ --^ •-
w':^-.''*--\''i> ^-V^, ,.,.v"'v'- N
19.7
,-r'\^ ' *
20.3

T% ^ -
:\40.5^
J-r-^V-l-
" JM
dt""v y-\ " ^-- -X
^ ^ ^^ N ^
18.2
18.6
17.5






20.1
18.3
8.5

^*^V \ ""^ •• ^
,"- v \ ^ \ ";
No data submitted
Insufficient
data
x =
0.85
;: -1 -- ->""
1.62

"" *" •«•.''
v— 0;50V'"
V -^-'*'— ,v
o!74 _
"-" "' \~f~y ~vl

0.20
2.14
0.23






0.21
0.12
0.21

*.X ••X-'^X-.^ - ^\
^ - \ ,\ - ,
0.335
- •A~'"^
0.571


0.197'
, ~V''--' V
0.276
v W. ^ \s <• ^ •. ^
-.-.-.-. •. ^
0.079
0.728
0.079






0.079
0.039
0.079

v -• *V ^->!"
•- ' - ,
18.87
,, - - «-" > -\---- o_
19.27

- '" ' *'>."••'
;K'^~;:i0^
t*:V:₯?^:~
17.93
^\. """'^r^ * -
- % •. C" s s s "" ' s f
18.40
19.83
17.77
•




•
20.27
18.23
8.57

^ ••""**" ^"- Nf v vV;
*' /";"' " * . -
TAG SYMBOLS
Determined
to be an
outlier
-0.30
^-X^'.oX^v.k'-
-0.07

""X1^ h -.-.^ v ""' ^ ° Av.X''
" ^\ s •• •.-•'•12f» AV V " - S\ S-1
t^^v^^fif
^..•?A4«_"
T"-^-"'" " *«*";^^ V^?*,
% ww« w * ' i. ' -. , ^
-0.57
0.26
-0.94

A



x ..
0.51
-0.67
-6.25

V^ -., v^-\ "^-^ Av^ ^^•••i^^
- '""'' -hVi '\" -V \
11 s Above
$ s Below
-0.60
5x\xa>iss,<. -"-*•" *i - -
^-'c;--:,-" -*\V;
-0.37

v W-' ^'^
ii>8& r\rx-";
fe'₯» \fe*^
^-LU^^ 	
^rr^"v\ --^-"cV^-
11 s% "" 0\ \ ' ""
-0.87
-0.04
-1.23
«
«
•\
•
•
•
0.21
-0.96
-6.54 U

^ ^ ^sv^ ^ v -^ _«c\.
1 ' -\ ' - '\ - > T J
control limit
control limit

-------
13/23 EMSL-LV Performance Evaluation: Uranium-Radium in Water, ll-Feb-1994
Radium-226
Lab
MS
MY
N
NA
'NC
NG
NH
NJ
NK
NO
NT
OB
OF
OK
OS
OX
OY
OZ
P
PB
PC
PE
PG
PP
PQ
PT
PV
PW
PX
PY
Q
QB
QJ
QM
QQ
QU
QX
QZ
R
RC
RD
RF
KG
RK
RL
Res. 1
19.1
= 39.6
20.8

21.3
20.7
30.0

23.0
18.8
21.0
22.0

19.8
19.8
25.7
18.2
23.7
21.3
41.6

18.9
40.7
26.5
37,6

22.0
19.3
19.8

18.8

20.4
18.2
14.5



10.3

Res. 2
23.2
-' 39:8 ;
21.7

20.9
17.8
; 42.0

24.0
19.5
21.0
10.3
,'• '';,':,;./<'
19.6
18.7
26.3
19.8
24.9
20.0
41.4

18.0
35.6
22.4
39.3
, , ,..
20.6
19.2
19.8

18.8

18.2
16.1
10.8



9.4

Res. 3
25.8
39.5
21.3

21.1
19.8
34X)

25.0
20.2
21.0
3.5
1 -/•
19.6
19.6
24.9
18.5
26.1
20.1
;4i,7

20.4
42.9
20.5
40.7

23.7
19.3
19.9

19.1

18.5
15.5
12.4



9.9
. --
• = No data submitted

Insufficient
data
x =
Exper. Rng anal Normalized deviation
Sigma (R + SR) Average (grand-avg) (known) Tag
3.38
0,15
0.45

0.20
1.48
e.ii
, • • ''. -'-
1.00
0.70
0.00
9.36

0.12
0.59
0.70
0.85
1.20
0.72
0.16

1.21
3.74
3.07
165
/•/'' ' ! '
1.55
0.06
0.06
-
0.17

1.19
1.42
1.86



0.45

1.608
0.069
0.177

0.079
0.571
3.596

0.394
0.276
0.000
6.033

0.039
0.217
0.276
0.315
0.473
0.256
0.069

0.473
1.833
1.345
0.610

0.610
0.020
0.020

0.059

0.433
0.532
0.728



0.177

22.70
-vl ;. 39.C& -'
21.27

[' ' '
21.10
19.43
"•'-• 36 J3

24.00
19.50
21.00
11.93
i
19.67
19.37

25.63
18.83
24.90
20.47
41,53

19.10
39.73
23.13
39,20
- • ,.,-.,
22.10
19.27
19.83

18.90

19.03
16.60
12.57



9.87

TAG SYMBOLS
Determined
to be an
outlier
1.91
-v 11.69 '."<*«=
1.08

" \ •."• * ^ -.'•
0.99
0.03
*v r9,20 '""" ""

2.66
0.06
0.93
-4.31
" -1 ' ' L
0.16
-0.01

3.60
-0.32
3.18
% % " -• ' ' •• ^ I
0.62
.'1178'. .--,

-0.17
, , il;75 ;T „
2.16

1.56
-0.07
0.26

-0.28

-0.21
-1.61
-3.94


> '
-5^50

1t s Above
•li s Below
1.62
11:39' X
0.79
, •
- : ' - • •*"
0.69
-0.27
6$t "x"
' - - ' ' ' * ;
2.37
-0.23
0.64
-4.60 &
;'/ ,-v ' Vx
-0.13
-0.31
3.31 f
-0.62
2.89
0.33
12.49; X
V\ ", *-
-0.46
li.46 x
1.87
;•-,-; - :•- --
1.27
-0.37
-0.04
*
-0.58
;•
-0.50
-1.91
-4.23 JJ.
•
*
1 • .
-5.79 U
' ' . , •
control limit
control limit

-------

EMSL-LV Performance Evaluation: Uranium-Radium in Water, ll-Feb-1994 14/23
Radium-226
Lab
RM
RP
RR
RV
RW
V;RX
RZ
S
SA
SC
SD
SF
SI
-v
SL
SM

SO
ss
ST
vSW'
sx
sz
T
WiAV
TD
TE
TG
TH
TI
TK
TL
TN
TQ
, TR
TS
TU
TV
TW
U
UB
UE
UI
UL
UN
UP
UQ
• =
0 =
Res. 1
19.3
';;r^"vv\.,-v
,' h '~s
^78.8" -

v ": ^ ' ' ' ''"V^l
19.9
20.4
f.V. v"Tr-7*
16.3
18.7
16.9
25.8

•-^ ^ * •-'"'• •.' v^ ^
18.5
f -A 1SV •.<•.'•••*«.'•

19.6
19.9
V^'35.9^
24.3
18.7
20.1
*, ryir-:™
22.7
14.0
18.0
9.2
16.7
30.8
15.1
20.9
^21.1
- -" r^*-»^
19.8
18.4


19.7

21.6
20.0

29.8
17.9
20.0
Res. 2
22.4
\^x^v\0;.
"!; :^V..S- V^ -"
- -77,1" "
>;," \ j s •"
>,^;v\ ^:;;; ;'
19.6
20.5
^^; ,,;,7-:;-\
20.3
19.2
17.3
26.9

V^.V-' ^X^:'.
18.7

' - \ vcy^0>
19.5
19.6
^^ali^^s
17.9
18.6
20.1
Tr>.' '" r'-v-o'-^i™
16.6
13.4
19.0
10.3
17.0
27.4
12.4
20.7
	 20.7
Jr^'^cr^p
19.3
18.8


18.3

22.1
20.4
v
29.4
18.5
19.2
Res. 3
18.4
"^-'?,:X:>- ',
V'6'«v"-''
; 59.1

T ^s;: ^
18.5
20.6
^ ""
18.5
20.4
15.7
27.0

^-^.^^
18.4


19.4
19.9
;}S33:5^
19.3
18.6
19.4
rt>:\"~7»v
22.5
18.8
15.0
8.0
15.9
34.1
6.7
18.3
22.9
-',-, _;-; -,—
20.9
18.6


19.6

23.9
19.9

31.3
18.1
19.8
No data submitted
Insufficient
data
x =
Exper.
Sigma
2.10
•• v\ , •• -VL , - ^
V' - " o-^fi"-
10.25
, • i '
^ v ^,,\ v. % %V __^
0.74
0.10
W\V :-:\^;
2.00
0.87
0.83
0.67

:\!'- AVx: v;' " :-:
0.15


0.10
0.17
-'- V>2:0i;}'
3.36
0.06
0.40
^ ^ V ^^ „ wr-\\^
£47
2.96
2.08
1.15
0.57
3.35
4.29
1.45
1.10
-v\ -- -^ X-
0.82
0.20


0.78

1.21
0.26
•-
1.00
0.31
0.42
Rng anal Normalized deviation
(R + SR) Average (grand-avg) (known) Tag
0.788
-. .. t -.-.._ -.
,~,^
5.846
-"-- "
'^;;>\5V
0.276
0.039
,'V 'V ', ~
0^788
0.335
0.315
0.236
•• " s *• •- " ^
-^t5-*\s> -
0.059


0.039
0.059
^ 0.788
1.495
0.020
0.138
'"*v\!™-
1.383
1.120
0.788
0.453
0.217
1.608
2.245
0.512
0.433
-. S ^ '"'"•- ^
0.315
0.079


0.276

0.453
0.098

0.374
0.118
0.158
20.03
0.37
0.08
•v\ '-^vT^oJC lic^J ^^K'^^J*^
"\ \-:;^S?"J ,i
: 70.93
-; - - " - " s " > -
•• •-"•.* ^'"o'-.s o X^1 •"•"'N'
19.33
20.50
,>\ ;--vV-"v^C,
18.37
19.43
16.63
26.57

X'rr^'-v/^'-^'sV
18.53

" '"" "•• ""''''••" ^ - K
19.50
19.80
>V ~^:sBiii^:~^
20.50.
18.63
19.87
.^r ,,,,,,,^.^.^,y;.^^
20.60
15.40
17.33
9.17
16.53
30.77
11.40
19.97
	 21.77 _
;\:>>"-^^^::rJ'x
2o!oo
18.60


19.20

22.53
20.10

30.17
18.17
19.67
TAG SYMBOLS
Determined
to be an
outlier
W'-\V' ;^;
29.76 I '^s"';'-

-•^"\^"s'V-v'^
-0.03
0.64
-' ; ^ „* - \ ;'----
-0.59
0.03
-1.59
4.14

?*?^:':l|.>A}
-0.49


0.06
0.24
^8.30^^"",?
0.64
-0.44
0.28
s*\IJT"^"r'^;~> v
0.70
-2.30
-1.19
-5.90
-1.65
6.57
-4.61
0.33
1.37 _^_
"^v;f:^j^
0.35
-0.46


-0.11

1.81
0.41
,
6.22
-0.71
0.16
ft = Above
li = Below
iSs, /•' -'
29!46 X
" s,'
:^:';v:r;; ':•?-,
-0.33
0.35
c?;;\ :> % : «,, .
-0.89
-0.27
-1.89
3.85 ft

X^cr%«- ,
-0.79

•
-0.23
-0.06
-f8;Of^;^X '
0.35
-0.73
-0.02
"**" " 7"«" "
0.40
-2.60
-1.48
-6.20 11
-1.94
6.27 ft
-4.91 U
0.04
1.08
:"'7^':':
-------
15/23 EMSL-LV Performance Evaluation: Uranium-Radium in Water, ll-Feb-1994
Radium-226

Lab Res. 1 Res. 2
US 18.3 22.2
UW 20.1 19.1
uz
VA
VG 24.3 24.4
VH "
VI 	 ' "' ' ,
vk
VL 10.0 11.2
'VN \ '\ :-' '
VQ
W 18.5 20.5
WA 20.2 20.1
X 22.5 23.8
Y
z - v . ' ; .< :-.

Exper. Rng anal
Res. 3 Sigma (R + SR)
17.0 2.71 1.045
20.6 0.76 0.295

•'•'
27.9 2.05 0.709



11.2 0.69 0.236
v "" " ^ ^ ' ' %.'
\ :•-•-'-
21.4 1.48 0.571
20.0 0.10 0.039
22.3 0.81 0.295
' f "• * s
,. •', -" - „ ..x,;,. • -"-•• * -' *

Normalized deviation
Average (grand-avg) (known)
19.17 -0.13 -0.42
19.93 0.31 0.02
'- '.-' '-\ '
, ' •'•' •' •' •' •',iVi'1' •'•'•' •' •' '' •'•' •'•' •'•'•'•'•1 •' •' •' *•
25.53 3.55 3.25
"-'•;/ ". --: -\ 's; //

\->,-' . . • - • .
10.80 -4.96 -5.25
— -/ ;/••,- '•• -~x; - -> *,- . - ~ -••••' ' ~

20.13 0.43 0.13
20.10 0.41 0.12
22.87 2.01 1.71

-- -,r '"?'"- ' /- ..••'"-\v. '-.v.^;



Tag


V '
'"•' '
ft
.:•:
•
••.•
U
,,.... ,,
•-•



,• -
" V-
Data sorted by Laboratory Average
Average Tag
4.47 x
8.57 Ji
9.17 U
9.87 U
10.80 U
11.40 U
11.93 U
12.57 Ji
13.73 &
14.87
15.00
15.40
16.13
16.53
16.53
16.60
16.63
17.27
17.33
17.47
17.63
17.67
17.70
17.77
17.80
17.93
• s No data submitted
0 = Insufficient data
Lab Average Tag
FZ 17.97
M 18.13
TH 18.17
RK 18.23
VL 18.23
TL 18.37
OF 18.37
RC 18.40
GN 18.40
JG 18.53
EP 18.60
TE 18.63
GQ 18.63
TI 18.73
DB 18.83
R 18.87
SF 18.90
AP 18.90
TG 19.03
CE 19.10
BC 19.13
CK 19.17
AW 19.20
L 19.20
AZ 19.20
K 19.23
TAG SYMBOLS
Lab Average Tag
BM 19.23
AJ 19.27
UP 19.27
LZ 19.30
BH 19.33
SC 19.37
BO 19.40
KH 19.43
E 19.43
SM 19.50
TU 19.50
SZ 19.57
AL 19.67
J 19.67
PB 19.70
JN 19.80
QU 19.83
CG 19.83
QZ 19.83
PT 19.87
HL 19.93
US 19.93
U 19.97
C 19.97
AF 20.00
ID 20.03
ft s Above control
x = Determined to be an outlier •U = Below control
Lab
EO
QB
JS
ER
RZ
OY
CA
NH
SD
ss
NT
BK
UQ
OX
A
ST
QM
KL
HU
T
UW
EB
TN
HK
TS
RM
limit
limit
-------
EMSL-LV Performance Evaluation: Uranium-Radium in Water, ll-Feb-1994 16/23
Radium-226





Data sorted by Laboratory Average
Average Tag
20.10
20.10
20.13
20.17
20.27
20.43
20.47
20.50
20.50
20.60
20.60
20.87
21.00
21.00
21.10

% responding labs
Lab
WA
UI
W
HP
LT
CS
PG
sx
s
TD
BN
FN
OB
CJ
NG


Average Tag
21.27
21.30
21.50
21.57
21.60
21.77
22.03
22.10
22.53
22.57
22.70
22.87
23.13
23.13
24.00
24.13
Frequency distribution
Lab Average
N 24.90
AE 25.53
DT 25.63
DZ 26.57
GO 29.13
TQ 30.17
I 30.77
Q 33.77
UE 35.33
BA 39.20
MS 39.63
X 39.73
PW 40.43
DE 40.47
NO 41.53
FE 70.93

Tag

ft
ft
ft
ft
ft
ft
X
X
X
X
X
X
X
X
X

Lab
PC
VG
P
SI
BG
UN
TK
SW
NJ
PX
MY
PV
JX
HE
PP
RV




° -6 T -4


• •llllllllll.l.
-T2 T I T
mu . m
+2

+4
^~ ^BnVft
1
Normalized deviation of the mean from the known value
% responding labs



0 I T 3



Frequency distribution

_•!••_








	 i
_ 	 • .iiiiiiiii-fi— T 	 . _ i
-2 0 +2
Normalized deviation of the mean from
• s No data submitted
0 = Insufficient data

TAG SYMBOLS
+4
A
the grand average
ft
x = Determined to be an outlier !!•
= Above
s Below
control limit
control limit
-------
        EMSL-LV Performance Evaluation: Uranium-Radium in Water,  1 l-Feb-1994  17 / 23
Radium-228                         Statistical Summary                      196 Participants
The known value of this nuclide is 14.7 pCi/1 with an expected precision of 3.7; the control limits
are 8.3 to 21.1; the warning regions are 8.3 to 10.4 and 19.0 to 21.1
87(44.4 %) Failed to respond
10(5.1 %) Outliers
7(3.6 %) Out of control
     but not an outlier


        Statistic
                . 84(42.9 %) Within all limits
Respondents
--•8(4.1 %) 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
     15.97
      8.08
     65.30
     50.60
      8.63
      0.16
     14.80
      0.68
      0.01
   Grand Avg 14.09
                3.07
                9.43
               21.80
               -4.16
               -0.20
               14.10
               -4.08
               -0.20
17(15.6 %) More than 3 norm. S.D. »
8(7.3 %) Between 2 and 3 norm. S.D. •
              5(59.6 %) Within 1 norm. S.D.
                           of known value
     19(17.4 %) Between 1 and 2 norm. S.D.
-------
18/23 EMSL-LV Performance Evaluation: Uranium-Radium in Water, ll-Feb-1994
Radium-228
Lab
A
AA
AE
AF
AI
AJ
AK
AL
AP
AU
AW
AZ
BA
BC
BG
BH
BK
BL
BM
BN
BO
C
CA
CE
CG
CJ
CK
CM
GO
CQ
CS
GX
D
DB
DE
DI
DO
DP
DT
DZ
E
EB
EH
EO
EP
Res. 1
8.2

13.1
15.9
17.3
13.7
17.2
16.6

11.3
15.5
16.2
11.3

16.7
14.2

16.8

11.9
13.3
15.4
13.8
15.3
17.0
14.0
1 ;
13.0

13.1
15.8



14.8
13.7

13.5

10.3
11.3
Res. 2
9.4

12.7
15.9
15.5
14.0
17.1
15.6

12.8
15.0
15.5
11.5

18.2
12.7

16.2

11.6
13.0
15.5
12.3
16.6
14.0
13.0

13.8

12.6
15.8



15.2
14.1

12.5

12.6
11.0
Res. 3
6.5
^ '
13.5
16.1
14.9
14.6
15.1
14.5

11.4
14.4
13.6
12.0

18.3
14.9

16.0

12.0
13.4
14.1
13.4
15.0
16.0
13.0
•J ';
14.4

12.9
15.8



16.0
13.4

13.0

11.9
11.1
• = No data submitted

Insufficient
data
x =
Exper. Rng anal
Sigma (R + SR) Average
1.46

0.40
0.12
1.25
0.46
1.18
1.05

0.84
0.55
1.35
0.36

0.90
1.12

0.42

0.21
0.21
0.78
0.78
.0.85
1.53
0.58
, , \
0.70

0.25
0.00



0.61
0.35

0.50

1.18
0.15
0.463

0.128
0.032
0.383
0.144
0.335
0.335
J A
0.239
0.176
0.415
0.112

0.255
0.351

0.128

0.064
0.064
0.223
0.239
0.255
0.479
0.160

0.223
,- •
0.080
0.000



0.192
0.112

0.160

0.367
0.048
8.03

13.10
15.97
15.90
14.10
16.47
15.57

11.83
14.97
15.10
11.60

17.73
13.93

16.33
, '
11.83
13.23
15.00
13.17
15.63
15.67
13.33


13.73

12.87
15.80



15.33
13.73

13.00

11.60
11.13
TAG SYMBOLS
Determined
to be an
outlier
Normalized deviation
(grand-avg) (known) Tag
-2.83
' v'YY : V .."-
-0.46
0.88
0.85
0.01
1.11
0.69

-1.06
0.41
0.47
-1.16

1.71
-0.07

1.05
<.
-1.06
-0.40
0.43
-0.43
0.72
0.74
-0.35
.,. - '', 'I,-, '<,; ' -,
-0.17
* *

-0.57
0.80



0.58
-0.17

-0.51

-1.16
-1.38
ft = Above
U = Below
-3.12 ; J
• V' , '~* •'
-0.75
0.59
0.56
-0.28
V - ' * '
0.83
0.41
•
-1.34
0.12
0.19
-1.45
*
1.42
-0.36
- ; -' ,,< -• -
0.76
"'"'•* , ' * •
-1.34
-0.69
0.14
-0.72
0.44
0.45
-0.64
• • - *
"• -,,'' ' ' "*
-0.45
, *
-0.86
0.51
•
•
• "
0.30
-0.45
'•
-0.80
1 ' ,• '
-1.45
-1.67
control limit
control limit
-------
EMSL-LV Performance Evaluation: Uranium-Radium in Water, ll-Feb-1994 19/23
Radium-228

Lab
ER
FE-
PJirs
FK
FN

FPt
-Ffc "
GG
GN
GO
GQ
'.'UTS'
HK
HL
HP
L'mf
i
ID
, JKt
J
- JE-
JG
JK
h«IN^
JP
JS
JY
K
KH
KL
L
LB
LH
LM
LT
LZ
M

Res. 1
>V^1*y~§?
» ,- -™",,1" - x~*^'

N\ ' - - O" ;
17.1
\^"V^\^\ V^v.'JX''- "V V

:>'i ,'£tf';
x- .j -; ' vv^,£
16.3
21.2
10.8
;I^ig£O
11.4
13.6
13.6
: '; v!^ A^V^V
> . " ' II'JL.
20.3
''v^sp^C.
13.3
, ^,A™ ^ ,-,^x
19.3
;n\!?j^™x'
• \ , "^"^^rt
;':; >v;:\ -•
13.6
i^ v^tir
17.0 _
15.2
18.0
,. 15-.1,,
- x \ \ -\

- -
12.7
-•>* -
7.0

Res. 2
"!. - '••. v •'sss.s'w. t -. \V •" * •\
^^v;V:;<>
^&M^
"-VX-..J H\, ^--v x--"""
•>NS\ •• V >.. .. _ •• ••
\^VY s ,v s -.
••.<• Ax;\-"s5--;> -
V ^ ;' ^,\f '^ - - \
* "•! •"' r, '
\! f^^X
17.5
X v^1- s-> •>^.\'".\\\-' ^ "•• •-
j:To*?^?":
X:J;s}di7-"
' * C'< ,,! I ,', V ' ' '
15.6
22.2
9.3
'^34l7\;
12.4
12.6
14.2
™v-. J ^-^^s"^ ^ ^
-'*'?"-5 r^,f •--'-" *
11.7
19.6
vi;r^:; ,
14.3
vs N
21.3
!'~ 'i-5,^-' " '
• \ „,_;• - - •
VV C - '' ^ ^
12.9
/j.f*l
17.4 _
15.6
17.1
15.4



13.7

7.6
• = No data submitted
0 =
Insufficient
data
x =
Exper.
Sigma
0~ ' ' ^ s
Rng anal Normalized deviation
(R + SR) Average
," >j"!, -\~O,
^ * , \ - i-- ••?--* ,^ •-
, ^ ^ ,{s^-v V , , ^•.^^\^^ \ ^ X
••^ ^ ^ ^ v Vv "" \^^\ ^ j-^$.\ % ' 5


0.45
>.* ^ v * ^ ••-.'• ^ ^ *• •• "•"•
**.^ X,;^^
\ \ ; ^ ^ - .. ^
', '• ;
0.36
2.48
0.75
*V--.i»82:7:f
0.50
0.61
0.42
v°V r ""V •---o'-''^'
0.64
	 0.38_ ^
\i-:^^:::J
0.50

1.01
v t,^ /.'"ts^ ;
V V ,-. ,

0.70
.;/^f
0.83
0.40
0.71
0.21



1.10

0.32
-" U" ' ' ' '
, ^
0.144
>*xt ' '; ; N*

0.080
- - ,:' '--• ^
0.112
0.750
0.239
^Zojii
0.160
0.176
0.128
\ "" ^ "'•"'
0.192
0^112
'/•T^;^
0.160

0.319
V>5,^x

"
0.223
l:,0?1
0.255
0.128
0.223
0.064

. «•

0.351

0.096
-v;'';-^^^;
s •" ^^"^^^"Virs^S
; - iC-^;^ ' V;"\vl«
,/\*P ;-'^.
17.53
^ -- x ^ --, ™«* X" N •- f •• s- \ «
\-, *•*, ;o 1 " " V*^^ ^ ^ " SN %<
i'-^ i. <• ••N;-.", , -••^ v\
•''-•''•'V^o^i^?
" s- \™v'v,A* i-\^;4v
, * r\% ,\ -i?,l
15.90
23.10
10.03
-;. i>^^7tf^
11.93
12.90
13.73
(grand-avg)
iVCi\-»^f»^;->:
(known) Tag
v;?V>&>^ > •<
£••* .X 'i ^^-: ^y;. -- . .H
fe^^^^^.7'
•-, -; - - - ^.^o^^v >;>; ^ - v ^ ->!-'?-
v." \-\t\-\ -
i. * -. '••.•.'•'•'••.%'' "•
^ t ""--^ ' -
1.61
^-.••^^^ \' v s ^.vT-
"'',^14^"
,V,;^!,> ;„-,>!/*,
0.85
4.22
-1.90
cf^'.is^f
-1.01
-0.56
-0.17
•^iiT^^^^lSv
	 12.17 	
120.03^^
IfT^'V^-^^'^^i^
13.83
":s ^ -^ - v;;^
	 ^,20.4^
"^-'^ "r'^r'TfT^ ^ ^'^^SN"
"«"I\"AS?*, ^s
^ ^ f ••''x-^ <
13.60
1 *lO »OVF N-:
'"' ^ •-"• ^ J \ts-.'1 s* ••' *"v% ^
16.73
15.60
17.87
15.33
-, ' ^
•.

12.63
; ' • >
7.37
TAG SYMBOLS
Determined
to be an
outlier
-0.90
2.78
''•v-;' V-;-^ ' '*'
\^\-: ,•=•- *
1.33
^•.\ %A%^^S\ «-•... ^ \ \ % ^%V% ,
^^.^*^>'(\
;,^-6;43 1>: X* "
-V ;J;' r" -,' , ^r*^1 '
0.56
3.93 K
-2.18
^sMv^k::';
-1.30
-0.84
-0.45
w V?-""-. W ^'^•'^'•'V \\ "^ ••
""M v^ - ^"^\ ^ s "s >^ -
J-1.19^ ]"^
2.50
= <§ ?;^IP>;:3p ^y> ;"^
-0.12
vrr'-v^.
2.95
vV^:-^^:i?
••__ •>•>- •• •• O v.^ ^ j,^ (^
\^^>^ ^\ X;,u;/
/iX'idfV:
^:?|^:v;
|!;gg:
1.24
0.71
1.77
0.58
,.,
^\>,f-'(o:-

-0.68
\5 s *•
-3.15
-0.41
v - ' * -\ •
2.67
^r"^,™-;^^-^;---^^ v-v-; s
- V - \ ^ ^ ° _]• N t -\ ^ ss
•;^v,:< \»/\i -
™0«5 1
^lV^;!^;»^
0.95
0.42
1.48
0.30
•
-,: '- '"' '' **Y-
, r . .f--
-0.97
-•
-3.43 $
It s Above control limit
•li = Below control limit
-------
20/23 EMSL-LV Performance Evaluation: Uranium-Radium in Water, ll-Feb-1994
Radium-228
Lab
MS
MY
N
NA •-
NC
NG
NH
NJ
NK
NO
NT
OB
OF
OK
OS
OX
OY
OZ
P
PB
PC
PE
PG
PP
PT
PV
PW
PX
PY
Q
QB
QJ
QM
QQ
QU
QX
QZ
R
RC
RD
RF
RG
RK
RL
• =
0 s
Res. 1
4.5

13.9


9.5
15.0
62,0
„•
15.2
13.8
21.2


15.2
11.6

14.1
14.5
18.6


29.0
39,4
14.8
13.0


22.2




4.9

14.6

18.1



35.3

Res. 2
3.8

15.7


10.9
17.6
68.6
-
16.1
14.3
- •
14.5


14.4
10.4

16.1
15.3
19.4

<
37.4
36.0
15.9
13.1


20.3


' ' * 7'

6.8

14.4

14.9



37.3

Res. 3
4.7

15.1


10.3
16.7
61.0
; ^
17.8
13.2
• s ' v \
13.6

, , ,
14.9
10.7

14.3
14.8
20.3

*„
31-6
36.6
17.1
12.4

••**
18.4

'' ' - <- ' ,


9.8

14.2

13.5



33:2

No data submitted
Insufficient
data
x =
Exper. Rng anal Normalized deviation
Sigma (R + SR) Average (grand-avg) (known) Tag
0.47

0.92


0.70
1.32
3.79

1.32
0.55
4.15


0.40
0.62

1.10
0.40
0.85


4.30
1.81
1.15
0.38


1.90

-, -.' .


2.47

0.20

2.36



2.06

0.144

0.287


0.223
0.415
1.224

0.415
0.176
1.406


0.128
0.192

0.319
0.128
0.271


1.649
0*543
0.367
0.112


0.607




0.782

0.064

0.734



0.655

4.33

14.90
' ' Js * \

10.23
16.43
;/- 63.67

16.37
13.77
16.43

• • ,
14.83
10.90

14.83
14.87
19.43


32,67
37.33
15.93
12.83
• ; ; , - X .,
" •- '
20.30


' • •', ' "'' /

7.17

14.40

15.50



35.27

TAG SYMBOLS
Determined
to be an
outlier
-4.57

0.38


-1.80
1.10
/;23,21:''.':
* ,
1.07
-0.15
•• s ••' ^ "• s -r '•• " -.
1.10


0.35
-1.49

0.35
0.36
2.50


8.70
10,88
0.86
-0.59
- - ! /
v- - , '
2.91
/. ' • /.
"/- , r ' , " -
,;;; . ,' , \«. >,,
>
-3.24

0.15

0.66



9.91
'''*
It = Above
Ji = Below
-4.85 U
'- /• , •
0.09
-'- -'' -•'' „
: • "
-2.09
0.81
22.92 x
:, •
0.78
-0.44
v \ > ' ,-•> -'* '
0.81
••
- ' •
0.06
-1.78
;' .,"- ",,/,-•
0.06
0.08
2.22
• '
•
&41 x
10.60 x
0.58
-0.87
' \ ' ! * .
" - - •
2.62
- ,. •'
', .,' *' »;
' - ,1 ,- *
•
-3.53 II
•
-0.14
*
0.37
•
- •
, (- •
9.63 x
*..,
control limit
control limit
-------
EMSL-LV Performance Evaluation: Uranium-Radium in Water, ll-Feb-1994 21 / 23
Radium-228

Lab
RM

pp:.
S'KR
RV
IRW

-"'••"WY-^v
* ilit» ;
RZ
S
'SA<;
sc
SD
SF
SI

'sir
SM
SO
ss
ST
SW
sx
sz
T

TA
;TD
TE
TG
TH
TI
•ifm
TL
TN
TQ

TR
TS
TU
TV
TW
U
UB
UE
UI
UL
UN
UP
UQ

Res. 1
17.1

'\ - v, \-^<
>•• ^ •" s ^,\, --
13.4
^ V V --.-...•. ^ WAV,."-.*
^ Y \O ^'V'v "•"• ^
os • ,, v .V ^X"^ x" ^,
V "• ^^ V ^ s ™ ^ "-"V^
15.6
13.3
?v" -MYlY
8.5
13.1
14.9
15.9

'^::V\-\f -"
12.2
•;~ \Y^r"
12.2
11.4
7.1
12.8
11.3
15.6

"• \ -\;:^""v
,\~C46^8':"H
15.4
12.1
5.5
13.5
42.9
16.1
16.7
16.3

, ,-. ;,^.s;
15.7



15.1

14.5
24.7

12.3
11.6
12.6

Res. 2
20.0

:-'--C\ 'C^"-~>
^X'^ *\ '' ^V~>~ , ..,
12.4
xY:^"'"::,.^'

, ^ "VV'- " o'-y-'8'' °°:;'''
^ X0-."^ *""" ^ ^ ^ "* ""^ ^s""
16.1
13.1
t^rY^YS?
8.4
14.6
16.3
11.1

.*, -*~ • '«. \'~ 'i
14.5
"^ •• f S ^S•:• ••
15.0
12.3
6.2
11.9
11.6
16.5

*\V^%^v^-/
H ^-140.6%-;'
16.4
12.5
6.1
13.4
38s2
13.8
13.4
16.1

YX J-^ '•:?!.;,•
16.4
," :-.'•;'- '^ V, -'


12.0

15.6
27.2

12.0
12.8
12.2

Res. 3
19.9

^ •• •. v •> V •-
S^V'' ""x " \l •• s"
14.4
c;i:;'v;T: 1>:

s'-xU^'"1 •• ""
•^•tV"* -i "v *
16.8
13.3
^Y^-Y^-'
V 8.1
12.9
13.2
12.5

1 \"-"-Y^ 5
16.4
^: - -, -
15.0
14.1
6.3
13.3
10.1
15.4

"•"" w\ ^ •• s
^A>4fc8"Y
15.7
11.8
4.8
13.5
47.8
16.2
21.2
17.2

"• s"J ^
14.6



12.5

18.4
23.4

12.1
11.8
11.8
• = No data submitted
1 0 s
Insufficient
data
x =
Exper.
Sigma
1.65

\ v- " >, '
, \!' - •- -",
1.00
"' .v".-}5iX" T,

^ ^ *i* v\ •-" --X '•^ '

0.60
0.12
;^t:;X:r^Y,
0.21
0.93
1.55
2.47

, - /', - -• ; v
2.10
\,vV ";; ' -
1.62
1.37
0.49
0.71
0.79
0.59

1 - **-" ;-• \-
v" ! -' 4.69" " ",-
0.51
0.35
0.65
0.06
480
1.36
3.92
0.59


0.91



1.66

2.01
1.93

0.15
0.64
0.40
Rng anal
(R + SR)
0.463



0.319
^"Xvo * %" *

^\" f\ s"S" "
••^X*™ "" •. ^ .
0.192
0.032
!^YYv?
0.064
0.271
0.495
0.766


0.670
. r ;;--
0^447
0.431
0.144
0.223
0.239
0.176

' - ""i \ ^'''•^•. " '''
P93
0.160
0.112
0.208
0.016
2.014
0.383
1.467
0.176

s -. s* ^ •.
0.287



0.495

0.623
0.607

0.048
0.192
0.128
Normalized deviation
Average
19.00

Y->'\'-- -x^vy;
--*-'\ ^%i' ' '"i •
13.40
"^'t'CiC^'^P

- •''^^ ^%\A;xx"s slS l^x^

16.17
13.23
Vv?" ^%?;^'f|:
8.33
13.53
14.80
13.17

-• v"; \--N J~°-'
14.37
' '^-YY\;Y^
14.07
12.60
6.53
12.67
11.00
15.83

\?4^\:yc;t-;^
^ V\'^46V?37i
15~83
12.13
5.47
13.47
42.97
15.37
17.10
16.53

s, '\"t. ., ,'-vi,% ""-
15.57



13.20

16.17
25,10

12.13
12.07
12.20
TAG SYMBOLS
Determined
to be an outlier
(grand-avg) (known) Tag
2.30

V ' '-o^-V^^-lt;-'
-'\>&'S:^-;^i
-0.32
,;::r;\r ^^;^-~r

s \^"'' ^^ s AX "• ; ^X-vf
^ i.X^. -. "••'''• s r"" * V " t* v<1 •- V" •- s
0.97
-0.40
^;i:?--^''r' 55
-2.69
-0.26
0.33
-0.43

" .:,*""-; "*'x->^^
0.13
c.3^^'^:^
-0.01
-0.70
-3.54
-0.67
-1.45
0.82

^YfrY.^f^V
Y '^ISI^^^
0.82
-0.91
-4.04
-0.29
13.52
0.60
1.41
1.14

1\.'! $*r-V \:, ::\
0.69
-. •. <.


-0.42

0.97
Y 5.16

-0.91
-0.95
-0.88
1t = Above
U = Below
2.01

C '^; , -^ • ;
s\xl-V' X YV-!.
-0.61
,;^^:V~ ^« ,V

" ' ^ v ^ -.v -. s -Y1- ^v -.\ ^ ^
_ " '-x::-''' ^x i|'"''1' \- "•"
0.69
-0.69
rp'v;;^^
-2.98
-0.55
0.05
-0.72

iV'-V- \o' • -
-0.16
• ;-f ;>?,v '•>
-0.30
-0.98
-3.82 b
-0.95
-1.73
0.53

:.Y:-iV ' ,";!*--
1463^V;^xv\
0.53
-1.20
-4.32 U
-0.58
13.23 x
0.31
1.12
0.86

v -V> '
0.41
* •
"- ' * ! ,
«'
-0.70
», '
0.69
4.87 x
- -«,
-1.20
-1.23
-1.17
control limit
control limit
-------
Y
22/23 EMSL-LV Performance Evaluation: Uranium-Radium in Water, ll-Feb-1994
Radium-228

Lab Res. 1 Res. 2
US' •:"'"' •'•"- ,;:
UW 16.2 15.0
UZ ' •'., . ' .
VA , ' >; .'~
VG 17.6 13.5
VH V "•'
VK - , ,-,v
VL 17.6 11.4
:VN ; ,. - - 'Y
W 12.1 12.8
WA 13.6 13.5
X 16.4 17.0
Y
Z

Exper. Rng anal
Res. 3 Sigma (R + SR)
\ -•" ' - , , ' ' '
16.0 0.64 0.192


16.5 2.12 0.655
" ; -" ^ ' /'" ' ' /
/'';: , . ,' -;,-'", - , , \
14.0 3.11 0.990

,;- :'"'*- \ - , •
12.0 0.44 0.128
13.7 0.10 0.032
17.8 0.70 0.223



Normalized deviation
Average (grand-avg) (known)
-y ; ' ', « •> V;;'- - -.« :: --/";„ V-",v:;'-
15.73 0.77 0.48
* ' ' " V , ^^ \^ '
\ - - ''''-''•'-' •'
15.87 0.83 0.55
v % * * -•" * ' * '<•*'• \?
""^; ' ~ \- ' •• ' ' - "' ' - ' "
14.33 0.11 -0.17
, ; , .... , , ., , ; , , ; ^ ..
12.30 -0.84 -1.12
13.60 -0.23 -0.51
17.07 1.39 1.11
•'',"'/•



Tag
-'v •

5v,
• :

>.*,:
- * -,

•



»,-
'*
Data sorted by Laboratory Average
Average Tag
0.97 x
4.33 Ji
5.47 II
6.53 U
7.17 U
7.37 li
8.03 li
8.33
10.03
10.23
10.90
11.00
11.13
11.60
11.60
11.83
11.83
11.93
12.07
12.13
12.13
12.17
12.20
12.30
12.60
12.63
• s No data submitted
0 = Insufficient data
Lab Average Tag
FZ 12.67
MS 12.83
TH 12.87
SW 12.90
QU 13.00
M 13.10
A 13.17
SC 13.17
GQ 13.20
NG 13.23
OY 13.23
SZ 13.33
EP 13.40
EO 13.47
BC 13.53
BO 13.60
AW 13.60
HK 13.73
UP 13.73
UN 13.73
TG 13.77
I 13.83
UQ 13.93
W 14.07
ST 14.10
LT 14.33
TAG SYMBOLS
Lab Average Tag
SX 14.37
PW 14.40
DB 14.80
HL 14.83
EB 14.83
AE 14.87
SI 14.90
CE 14.97
U 15.00
S 15.10
C 15.33
CK 15.33
RV 15.37
TI 15.50
SD 15.57
WA 15.57
JS 15.60
HP 15.63
DZ 15.67
CS 15.73
NT 15.80
J 15.83
BK 15.83
SS 15.87
AJ 15.90
VL 15.90
ft s Above control
x = Determined to be an outlier U = Below control
Lab
SM
QZ
SF
P
OX
PB
N
AZ
CA
BA
L
DT
TL
RC
TS
AP
KH
CG
CJ
UW
DE
TE
T
VG
GN
AI
limit
limit
-------
       EMSL-LV Performance Evaluation: Uranium-Radium in Water, ll-Feb-1994  23/23
Radium-228
Average
Tag
  Data sorted by Laboratory Average
Lab |  Average	Tag	Lab | Average
                   Tag
                     Lab
   15.93
   15.97
   16.17
   16.17
   16.33
   16.37
   16.43
   16.43
   16.47
   16.53
           PV
           AF
           UE
           RZ
           BM
           NO
           OF
           NH
           AL
           TQ
        16.73
        17.07
        17.10
        17.53
        17.73
        17.87
        19.00
        19.43
        20.03
        20.30
K
X
TN
FN
BH
KL
RM
PC
ID
Q
20.40
23.10
25.10
28.50
32.67
33.70
35.27
37.33
42.97
45.73
63.67
ft
x
x
X
X
X
X
X
X
X
JG
GO
UI
JX
PP
HE
RK
PT
TK
TD
NJ
 % responding labs
                    Frequency distribution
 10
                  -4            -2            0            +2
                     Normalized deviation of the mean from the known value
 % responding labs
                    Frequency distribution
 10-
                         .llljllf.. .
     -6
     -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 s Above control limit
                                           •li = Below control limit
-------