Report - NUCLEUS - IAEA

Report
on the IAEA-CU-2006-04 ALMERA
Proficiency Test on the Determination of
Gamma Emitting Radionuclides
IAEA / AL / 170

Department of Nuclear Sciences and Applications
Physics, Chemistry and Instrumentation Laboratory
Chemistry Unit
IAEA / AL /170
ALMERA
(Analytical Laboratories for the Measurement of Environmental Radioactivity)
DRAFT
THE IAEA-CU-2006-04 PROFICIENCY TEST
ON THE DETERMINATION OF
GAMMA EMITTING RADIONUCLIDES
A. Shakhashiro, U. Sansone, A. Trinkl, M. Makarewicz,
C. Yonezawa, C.K. Kim, G. Kis-Benedek, T. Benesch, R. Schorn
Seibersdorf, Austria, May 2007
Page i

Contact information
Abdulghani Shakhashiro
International Atomic Energy Agency (IAEA)
Department of Nuclear Sciences and Applications
Physics, Chemistry and Instrumentation Laboratory
Chemistry Unit
Agency’s Laboratories Seibersdorf
A-2444 Seibersdorf, Austria
Tel. : +431 2600 28226
Fax : +431 2600 728226
E-mail : a.shakhashiro@iaea.org
http://www.iaea.org/programmes/aqcs/
Legal Notice
Neither the IAEA nor any person acting on behalf of the IAEA is responsible for the use which might
be made of the following information.
© International Atomic Energy Agency
Reproduction is authorised provided the source is acknowledged
Printed in Austria
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ii

Contents
Executive summary .................................................................................................................... 5
Acknowledgement...................................................................................................................... 6
1. Introduction .......................................................................................................................... 10
2. Materials and methods.......................................................................................................... 11
2.1 Proficiency test objectives .................................................................................................. 11
2.2 Participants ........................................................................................................................ 11
2.3 Composition and preparation of proficiency test materials............................................... 11
3. Performance criteria ............................................................................................................. 17
3.1 Relative bias ....................................................................................................................... 17
3.2 PT evaluation criteria ........................................................................................................ 17
3.2.1 Trueness........................................................................................................................... 17
3.2.2 Precision.......................................................................................................................... 18
3.3 The z-score value................................................................................................................ 18
3.4 The u-score value ............................................................................................................... 18
4. Results and discussion.......................................................................................................... 20
5. Conclusions .......................................................................................................................... 27
6. References ............................................................................................................................ 28
Appendix A: Summary evaluation sorted by laboratory code and outline of the reported
technical information ..............................................................................................
Appendix B: Performance evaluation tables sorted by radionuclide...........................................
Appendix C: Performance evaluation tables sorted by laboratory code .....................................
Appendix D: List of participating laboratories............................................................................
Page iii

“The Mission of the IAEA Department of Nuclear Sciences and Applications is to
contribute to sustainable development in Member States through the use of nuclear sciences
and their applications in food and agriculture, human health, industry, water resources
management, and environment monitoring, research and protection, with due regard to
safety”.
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iv

Executive summary
The Chemistry Unit of the Physics,
Chemistry and Instrumentation Laboratory
in the IAEA's Seibersdorf Laboratory in
Austria, has the programmatic
responsibility to support global
radionuclide measurement systems, in
issues of international concern related to an
accidental or intentional release of
radioactivity in the environment. To fulfil
this obligation and ensure a reliable
worldwide, rapid and consistent response,
the Chemistry Unit coordinates an
international network of Analytical
Laboratories for the Measurement of
Environmental Radioactivity (ALMERA).
The network, established by the IAEA in
1995 [1] [2] [3], makes available to
Member States a world-wide network of
analytical laboratories capable of providing
reliable and timely analysis of
environmental samples in the event of an
accidental or intentional release of
radioactivity. The network is a technical
collaboration of existing institutions. It
provides an operational framework to link
expertise and resources, in particular when
a boundary-transgressing contamination is
expected or when an event is of
international significance.
A primary requirement of the ALMERA
members is participation in the IAEA
interlaboratory comparison exercises
which are specifically organized for
ALMERA on a regular basis. These
exercises are designed to monitor and
demonstrate the performance and
analytical capabilities of the network
members, and to identify gaps and problem
areas where further development is needed.
Continued membership has benefits in
training and educational opportunities,
enhanced mutual trust in results and
methodology and objective evidence for
accreditation purposes.
Page 5
The performance evaluation results of the
interlaboratory comparison exercises
performed in the frame of the ALMERA
network are not anonymous for those
laboratories nominating to participate as
ALMERA members.
In the interlaboratory exercise described in
this report, 195 test samples (matrix
reference materials) were prepared and
distributed to the participating laboratories
in June 2006. Laboratories were sent
samples containing known activities of
gamma emitting radionuclides in three
matrices (soil, grass and water), and were
requested to return the results within three
days of receipt of the samples (short-term
reporting).
The participating laboratories were
requested to analyse the samples
employing the methods used in their
routine work, so that their performance on
the test samples could be directly related to
the real performance of the rapid reporting.
Thirty eight laboratories (Table 1) from
sixty five initially registered laboratories,
reported their results to the IAEA. The
analytical results of the participating
laboratories were compared with the
reference values assigned to the reference
materials, and a rating system was applied.
Table 2 reports a summary evaluation of
this proficiency test. The proficiency test
results has demonstrated that in the case of
40 K, 54 Mn, 60 Co, 65 Zn, 134 Cs, 137 Cs and
241 Am the majority of the participating
laboratories could produce analytical
results within acceptable time limit and
which is satisfactory and comparable
within the network. For these radionuclides
the accepted results ranged between 70 to
95 %.
The proficiency test results show that the
determination of the activity
concentrations of 109 Cd and 210 Pb were the
most problematic and it was found that

more than 50 % of the participating
laboratories should apply corrective
actions to fulfil the acceptance criteria of
this proficiency test.
The analytical uncertainties associated
with the reported results were, in general,
appropriate for the analytes and matrices
considered in the current proficiency test.
It is recommended to repeat the same
exercise to check if the laboratories were
able to introduce proper corrective actions
to improve the performance in the
determination of 109 Cd and 210 Pb.
Generally speaking, this exercise provided
the possibility to quantify the level of
analytical performance of the ALMERA
network members and it is a step forwards
the improvement of the network
performance in the determination of
gamma emitting radionuclides.
Acknowledgement
The participants and laboratories
responded to this proficiency test and
contributed their efforts to the present
work are highly appreciated and
acknowledged.
The Hungarian Agricultural Authority,
Food and Feed Safety Directorate, Central
Radioanalytical Laboratory of Hungary
contributed, as IAEA collaborating Centre,
in the preparation and characterization of
the grass reference materials used in this
proficiency test.
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6

Lab.
code
Name Country
291 PTB - Physikalisch-Technische Bundesanstalt Germany
292 Risoe National Laboratory Denmark
294 Studiecentrum Voor Kernenergie Belgium
296 Centre for Environment, Fisheries and Aquaculture Science United Kingdom
297 ARPANSA - Australian Radiation Protection and Nuclear Safety Agency Australia
298 LGC Limited United Kingdom
300 National Radiation Laboratory New Zealand
303 Institute for Energy Technology Norway
304 Hungarian Agricultural Authority Hungary
305 So.G.I.N - Centrale Elettronucleare di Trino Italy
306 Institute Jozef Stefan Slovenia
307 Nuclear Power Plant Mochovce Slovak Republic
308 Mint - Malaysian Institute for Nuclear Technology Research Malaysia
310 Nuclear Power Plant Bohunice Slovak Republic
311 ENEA - Istituto di Radioprotezione - Laboratorio Saluggia Italy
313 Atomic Energy Commission of Syria Syrian Arab Republic
314 Rivm - Laboratory for Radiation Research The Netherlands
315 Savannah River Technology Center USA
318 Jordan Atomic Energy Commission Jordan
319 APAT – Environmental Protection Agency Italy
320 Institute for Nuclear Research Romania
321 Tarapur Atomic Power Station India
322 Center for Ecotoxicological Researches of Montenegro Montenegro
325 Lebanese Atomic Energy Commission Lebanon
327 Research Center Karlsruhe Germany
331 ENEA - Istituto di Radioprotezione - Laboratorio Trisaia Italy
332 Environmental Protection Agency Lithuania
334 Instituto Tecnologico e Nuclear Portugal
335 National Technical University of Athens Greece
336 Comision Chilena de Energia Nuclear Chile
338 Kozloduy Nuclear Power Plant Bulgaria
341 So.G.I.N - Centrale Elettronucleare di Caorso Italy
342 SIA Radon Russian Federation
344 Norwegian Radiation Protection Authority Norway
347 ENEA - Istituto di Radioprotezione - Laboratorio Casaccia Italy
348
Page 7
CNEN - National Commission for Nuclear Energy Laboratorio Pocos de
Caldas
349 Atomic Energy Organisation of Iran
Brazil
351 Ukrainian Hydrometeorological Institute Ukraine
Islamic Republic of
Iran
Table 1. List of laboratories participating in the IAEA-CU-2006-4 proficiency test.

Lab
Page 8
241 Am
109 Cd
60 Co
Soil sample
134 Cs
137 Cs
54 Mn
210 Pb
65 Zn
Grass sample
137 Cs
40 K
241 Am
109 Cd
60 Co
Water sample
134 Cs
137 Cs
54 Mn
210 Pb
Accepted measurement results
65 Zn Total Soil Grass Water
291 A A A A A A A A A A A A A A A A A A 18 8 2 8
292 A N A A A A A A A A A A A A A A A A 17 7 2 8
294 A A A A A A N A A A A A A A A A N A 16 7 2 7
296 A N A A A A n.r. A A A A A A A A A n.r. A 15 6 2 7
297 A N A A A A A A W W A A A A A A A A 15 7 0 8
298 A A A A A A n.r. A A A A N A A A A n.r. A 15 7 2 6
300 A A A A A A A A A A A A A A A A A A 18 8 2 8
303 A A A A A A A A A A A A A A A A A A 18 8 2 8
304 A N A A A W A A A A A A A W A A A A 15 6 2 7
305 n.r. n.r. A n.r. n.r. n.r. n.r. n.r. W W n.r. n.r. A n.r. n.r. A A n.r. 4 1 0 3
306 A N A A A A A A A A A W A A A A A A 16 7 2 7
307 A N A A A A N A A A N A A A A A n.r. A 14 6 2 6
308 N A A A A A W A A A A N A A A A N A 14 6 2 6
310 A N A A A A N A A A W N A A A A N A 13 6 2 5
311 A A A A A A A A A A A A A A A A A A 18 8 2 8
313 A N A A A A A A A A n.r. n.r. A W A A n.r. W 12 7 2 3
314 A A A A A A A A A A A N A A A A A A 17 8 2 7
315 W N A A A A W A A A A N A W A A n.r. A 12 5 2 5
318 A N A A A A A A A W N N A A A A W A 13 7 1 5
319 A N A A W W A A W W A A A A A W A A 12 5 0 7
320 A A A A W W N A W N A N A A W N N A 9 5 0 4
321 A N W A A A N W W A A A A. A W W W W 9 4 1 4
322 W N A A A A N A A A A A A W A A N A 13 5 2 6
325 n.r. n.r. A A A A n.r. A A A n.r. n.r. A A A A n.r. A 12 5 2 5
327 A N A A A A W A W A W A A A A A W A 13 6 1 6

Lab
241 Am
109 Cd
60 Co
Soil sample
134 Cs
137 Cs
54 Mn
210 Pb
65 Zn
Grass sample
137 Cs
40 K
241 Am
109 Cd
60 Co
Water sample
134 Cs
137 Cs
54 Mn
210 Pb
Accepted measurement results
65 Zn Total Soil Grass Water
331 W A W W W A A A W W A A A W A A N A 10 4 0 6
332 n.r. n.r. A A A A N A N A n.r. n.r. A W A N N A 9 5 1 3
334 W A A A A W W W A A A A A W A A W A 12 4 2 6
335 A N A A A A A A W W A A A A A A N A 14 7 0 7
336 n.r. A A N N N n.r. A W A n.r. W A A A A n.r. A 9 3 1 5
338 A n.r. A A A W n.r. W A A n.r. A A W A A n.r. A 11 4 2 5
341 N N A A W W N A N N A A A A A A N A 10 3 0 7
342 A N A A A A A A A A A N A A W A A A 15 7 2 6
344 W N A A A A n.r. A A A A N A A A A n.r. A 13 5 2 6
347 W A A A A A A A A A A A A A A A N A 16 7 2 7
348 A A A W A A A A A A A W A A A A A A 16 7 2 7
349 N A A A A A n.r. A N N A N A W A A n.r. A 11 6 0 5
351 A A A A A A A A A A A A A A A A A A 18 8 2 8
Accepted % 63 39 95 89 84 79 47 89 68 76 71 45 97 74 89 89 32 89
A = Accepted measurement results
W = Warning
N = Not accepted
n.r. = not reported
Table 2. Summary evaluation of the IAEA-CU-2006-4 proficiency test.
Page 9

1. Introduction
The Chemistry Unit of the Physics,
Chemistry and Instrumentation Laboratory
in the IAEA's Seibersdorf Laboratory in
Austria, has the programmatic
responsibility to provide assistance to
Member State laboratories in maintaining
and improving the reliability of analytical
measurement results, both in trace element
and radionuclide determinations. This is
accomplished through the provision of
reference materials of terrestrial origin,
validated analytical procedures, training in
the implementation of internal quality
control, and through the evaluation of
measurement performance by organization
of worldwide and regional interlaboratory
comparison exercises.
The use of reference materials and
interlaboratory comparison exercises are
among the most important tools for the
production of reliable measurement results
and for the achievement of a required
quality level. Through the evaluation
reports provided to the participating
laboratories in the interlaboratory
comparison exercises, the IAEA provides
direct consultation and guidance on
appropriate measurement techniques to be
applied, and identifies gaps and problem
areas where further development is needed.
This helps participating laboratories to
improve both their measurement
techniques and performance. With the
advent of “mutual recognition” on both a
European and world wide basis, it is now
essential that laboratories participate in
proficiency testing schemes that will
provide an interpretation and assessment of
results which is transparent to the
participating laboratory and its “customer”.
The activities of the Chemistry Unit are
also addressed to support global
radionuclide measurement systems, in
issues of international concern related to an
accidental or intentional release of
radioactivity in the environment. To fulfil
this obligation and ensure a reliable
Page 10
worldwide, rapid and consistent response,
the Chemistry Unit coordinates an
international network of Analytical
Laboratories for the Measurement of
Environmental Radioactivity (ALMERA).
The network, established by the IAEA in
1995 [1] [2] [3], makes available to
Member States a world-wide network of
analytical laboratories capable of providing
reliable and timely analysis of
environmental samples in the event of an
accidental or intentional release of
radioactivity. The network is a technical
collaboration of existing institutions. It
provides an operational framework to link
expertise and resources, in particular when
a boundary-transgressing contamination is
expected or when an event is of
international significance.
A primary requirement of the ALMERA
members is participation in the IAEA
interlaboratory comparison exercises
which are specifically organized for
ALMERA on a regular basis. These
exercises are designed to monitor and
demonstrate the performance and
analytical capabilities of the network
members, and to identify gaps and problem
areas where further development is needed.
Continued membership has benefits in
training and educational opportunities,
enhanced mutual trust in results and
methodology and objective evidence for
accreditation purposes.
The performance evaluation results of the
interlaboratory comparison exercises
performed in the frame of the ALMERA
network are not anonymous for those
laboratories nominating to participate as
ALMERA members.
In the interlaboratory exercise described in
this report, 195 test samples (matrix
reference materials) were prepared and
distributed to the participating laboratories
in June 2006. Laboratories were sent
samples containing known activities of
gamma emitting radionuclides in three
matrices (soil, grass and water), and were

equested to return the results within three
days of receipt of the samples (short-term
reporting). The participating laboratories
were requested to analyze the samples
employing the methods used in their
routine work, so that their performance on
the test samples could be directly related to
the real performance. Thirty eight
laboratories from twenty nine different
Member States participated in this
exercise.
2. Materials and methods
2.1 Proficiency test objectives
The measurement of water, grass and soil
samples containing a mixture of
radionuclides with an unknown (to the
participants) composition was aiming at (i)
checking the accuracy and precision of the
analytical results produced by the
participating laboratories from ALMERA
network, (ii) testing the comparability of
radiological measurements and (iv)
encouraging the participating laboratories
in finding remedial actions where
shortcoming in analytical performance are
detected.
2.2 Participants
A total of 65 laboratories were registered
in this PT. 38 laboratories reported their
results to the IAEA. A complete list of
participants is given in Appendix D.
2.3 Composition and preparation of
proficiency test materials
The following proficiency test design was
applied:
• one spiked soil sample (200g)
• one natural grass sample (100 g)
• one spiked water sample (500 ml)
Table 4 presents the target values and the
combined standard uncertainties of the
PT samples.
2.3.1 Preparation of the spiked soil
sample 01
A soil from China was used to prepare a
spiked mineral matrix with 8 gamma
emitting radionuclides. Table 3 shows the
identification of certified solutions used in
this PT. Before using the soil for spiking, it
was milled and sieved to collect the
appropriate fraction at mesh size less than
0.1mm, and then homogenised.
The matrix of Chinese soil was
characterised and a number of samples
were pre-screened for radionuclides prior
to spiking. The results have shown that the
material is free from radionuclides, except
for 137 Cs, which was present at 2.6 ± 0.2
Bq kg -1 based on dry mass. (Ref. date:
2006-01-01). In addition, 210 Pb was found
at 48 ± 1.5 Bq kg -1 dry mass. The moisture
content was found to be 2.3 ± 0.2 %.
The preparation of the spiked soil sample
was performed according to a validated
procedure, full details can be found in [4].
The target values were calculated from the
certified activity values assigned to each
radionuclide, taking into account the
successive dilution steps, the mass of
spiking solutions and the amount of matrix
being spiked. The target values together
with the respective uncertainties are
presented in Table 4.
Seven samples were analysed using
gamma spectrometry by five National
Metrological Institutes (NMI) and two
expert laboratories within the frame of the
CCRI(II) S4 supplementary comparison
organised in cooperation with the
Committee Consultative on Ionization
Radiation (CCRI) of BIPM. The IAEA
target values were in good agreement with
the consensus value derived from the
measurement results of the NMIs. The
consensus value of the NMIs was derived
using a robust statistical approach Mixture
Models Median (MM-median) described
by David L. Duewer [5]. This approach
Page 11

allows estimating the reference value in a
robust way even when some of the results
are not in agreement with the majority.
Thus this approach is robust to outliers and
in the same time accounts for the reported
uncertainty of each result.
The MM-median is a direct analogue of the
median. It is the location which divides the
MM-PDF into two sections of equal area.
To estimate the dispersion of the analytical
results the MM-median based Standard
Deviation S(MM-median) was calculated
from the span of the central 50% of the
MM-PDF density [5].
Table 5 shows the consensus values as
MM-median of NMIs results and the
associated combined standard uncertainty.
2.3.2 Preparation of the natural grass
sample 02
The sample 02 is a natural grass which was
collected in Chernobyl area. The grass was
dried, milled and sieved to collect the
appropriate fraction at mesh size less than
0.25 mm, and then homogenised. The
homogeneity was tested by analysing 10
samples at 10 replicates each at 5 g sample
intake using 63X63 mm NaI(Tl) well type
detector. Single way ANOVA [6] ISO
Guide 35 was used to estimate the standard
uncertainty originated from the betweenbottles
heterogeneity and was found to be
0.21% at sample intake 5 g.
The 40 K and 137 Cs in the grass material
were analysed using gamma spectrometry
by a group of National Metrological
Institutes (NMI) and two expert
laboratories within the frame of the
CCRI(II) S4 supplementary comparison
organised in cooperation with the
Committee Consultative on Ionization
Radiation (CCRI) of BIPM. For deriving
the target values a robust approach
proposed by David L. Duewer [5] was
used.
Page 12
The target values of grass material with the
respective uncertainties are presented in
Table 4.
2.3.3 Preparation of the spiked water
sample 03
The water sample was gravimetrically
prepared in one batch. A portion of 300 kg
of acidified demineralised water was
spiked with a mixture of certified single
radionuclide solutions traceable to a
national standard of radioactivity. Then a
pump with multiple outlets was used to
homogenise the bulk water sample in a
tank of 600 L. Seven samples were
measured by a group of National
Metrological Institutes (NMIs) by gamma
spectrometry. The IAEA target values
were in good agreement with the
measurement results of the NMIs. The
final target activity concentration for each
radionuclide was calculated from the
certified activity values assigned to each
radionuclide, taking into account the
successive dilution steps, the mass of
spiking mixture and the amount of water
being spiked as determined from weighing.
The combined standard uncertainty
includes two major components:
uncertainty of the certified solution and
weighing uncertainty.
Figures 1, 2 and 3 show the PT materials
sets.
2.3.4 Homogeneity testing
The homogeneity test results provided
experimental evidence that satisfactory
level of within and between bottles
homogeneity has been attained.
Table 6 presents relative standard deviation
of measurements results of ten bottles for
water and soil at 60 g and for grass at 5 g
sample intake. More information about the
homogeneity testing could be found in [4].
12

2.4 Reference time
The reference time for all activity
concentrations is 1 June 2006.
Figure 1. A set of the PT material.
Figure 2. Distribution of the PT sets.
Figure 3. PT materials dispatch.
54 Mn AMERSHAM: MFZ64; NO S3/28/12
60 Co CERCA-LEA FRAMATOME: CO60-
ELSB50; NO 72452
65 Zn CERCA-LEA FRAMATOME: ZN65-
ELSB50; NO 7020
109 Cd AMERSHAM: CUZ64;NO S3/36/23
134 Cs CERCA-LEA FRAMATOME:
CS134-ELSB50; NO 70823
137 Cs AMERSHAM: CDZ64; NO S4/14/70
210 Pb AEA Technology RBZB44; NO KE
800
241 Am CERCA-LEA FRAMATOME:
AM241-ELSB30; NO 5104
Table 3. The identification of the certified
solutions of each radionuclide used in
spiking the soil and water samples in this
PT.
Page 13

Page 14
Radionuclide
Soil sample 01 Grass sample 02 Water sample 03
Target
value
Combined standard
uncertainty
Target
value
Combined standard
uncertainty
Target
value
Bq kg -1 (dry mass) Bq kg -1
Combined standard
uncertainty
40 K - - 1059 28 - -
54 Mn 48.0 0.98 - - 4.89 0.017
60 Co 56.1 1.37 - - 5.80 0.04
65 Zn 77.6 2.54 - - 7.27 0.075
109 Cd 177.6 8.40 - - 19.62 0.10
134 Cs 64.2 1.87 - - 13.03 0.10
137 Cs 52.6 1.08 11320 185 16.72 0.08
210 Pb 259.5 12.53 - - 9.55 0.15
241 Am 96.6 2.78 3.66 0.023
For all samples the reference date is 1 June 2006. The combined standard uncertainty is expressed at 1σ level.
Table 4. The target values and the respective standard combined uncertainties used in the evaluation in this PT.

Radionuclide
Soil sample 01 Grass sample 02 Water sample 03
Activity
Combined standard
uncertainty
Activity
Combined standard
uncertainty
Activity
Bq kg -1 (dry mass) Bq kg -1
Combined standard
uncertainty
40 K - - 1059 28 - -
54 Mn 50.2 1.1 - - 4.93 0.10
60 Co 58.3 1.0 - - 5.87 0.08
65 Zn 78.0 2.0 - - 7.18 0.36
109 Cd 192 17 - - 21.1 1.25
134 Cs 67.8 2.0 - - 13.20 0.26
137 Cs 55.0 1.0 11320 185 17.29 0.33
210 Pb 253 15 - - 9.86 1.01
241 Am 96.6 3.5 - - 3.63 0.08
Table 5. The consensus values derived from the NIMs results as a Mixture Model-Median and the respective standard uncertainties. [7]
Page 15

Radionuclide
Page 16
210 Pb
241 Am
109 Cd
Energy [keV] 46 59 88 604 661 795 834 1115 1173 1332
Between bottles relative standard
deviation in soil
Between bottles relative standard
deviation in grass
Between bottles relative standard
deviation in water
134 Cs
137 Cs
134 Cs
54 Mn
3.21 1.38 2.67 1.34 1.95 2.46 1.75 2.17 2.67 1.92
- - - - 1.63 - - - - -
1.51 1.24 2.11 0.77 1.55 1.49 0.86 1.09 1.56 2.60
Table 6. The relative standard deviation [%] of measurements results of ten bottles for soil and water at 60 g and for grass at 5 g sample intake.
65 Zn
60 Co
60 Co
16

3. Performance criteria
Several rating systems have been
developed for determining a laboratory’s
performance and the meaning of the results
of the different scoring systems are not
always comparable. Among various
statistics, z-scores and u-scores are most
often used. The drawback of z-scores is
that the uncertainty of the participant’s
measurement result is not taken into
account for the evaluation of performance.
In the case of u-scores, the evaluation
includes uncertainties of the participant
measurements and the standard uncertainty
of the assigned value. Laboratories
performing well in classical proficiency
testing (z-scores) will not necessarily
exhibit the same level of performance
when their analytical uncertainties are
considered in the evaluation.
The proficiency testing scoring system
applied by the Chemistry Unit in the
Agency’s laboratories takes into
consideration the trueness and the
precision of the reported data and it
includes in the evaluation both the
combined standard uncertainty associated
with the target value of proficiency testing
samples and the combined standard
uncertainty reported by the participating
laboratories. This approach is aligned with
the new requirements of the (ISO/IEC
17025:2005) [8] which require that
laboratories have to express their
measurement uncertainty.
According to the newly adopted approach,
the reported results are evaluated against
the acceptance criteria for accuracy and
precision and assigned the status
“acceptable” or “not acceptable”
accordingly. A result must pass both
criteria to be assigned the final status of
“acceptable”. The advantage of this
approach is that it checks the credibility of
uncertainty statement given by the
participating laboratories, and results are
no longer compared against fixed criteria
but participants establish their individual
Page 17
acceptance range on the basis of the
uncertainties assigned to the values. Such
an approach highlights not only
methodological problems affecting the
accuracy of the reported data but also
identifies shortcomings in uncertainty
estimation.
In addition, three other statistical
parameters namely: z-score,
IAEA/Laboratory result ratio and relative
bias are calculated as complementary
information for the participating
laboratories.
3.1 Relative bias
The first stage in producing a score for a
result ValueAnalyst (a single measurement of
analyte concentration in a test material) is
obtaining the estimate of the bias. To
evaluate the bias of the reported results, the
relative bias between the Analyst’s value
and the IAEA value is calculated and
expressed as a percentage:
Relative
ValueAnalyst−
Value
bias=
Value
3.2 PT evaluation criteria
IAEA
IAEA
× 100%
The proficiency test results were evaluated
against the acceptance criteria for trueness
and precision and assigned the status
“Acceptable”, “Warning” or “Not
Acceptable” accordingly [9].
3.2.1 Trueness
The participant result is assigned
“Acceptable” status for trueness if:
A≤ 1 A2
where:
A1 = IAEA
Analyst Value
Value −

Page 18
A2 =
3.2.2 Precision
2 2
2. 58 Unc IAEA+
Analyst ×
Unc
For evaluation of precision an estimator P
is calculated for each participant,
according to the following formula:
2
⎛ Unc ⎞ ⎛ Unc ⎞
IAEA
Analyst
P = ⎜ ⎟
⎜
⎟ +
× 100%
⎜ ⎟
⎝ValueIAEA
⎠ ⎝ValueAnalyst
⎠
P directly depends on the measurement
uncertainty claimed by the participant. The
Limit of Acceptable Precision (LAP) for
each analyte respectively is defined for the
respective proficiency test in advance,
including any adjustment due to the
concentration or activity level of the
analytes concerned and the complexity of
the analytical problem. Participants’ results
are scored as “acceptable” for precision
when P ≤ LAP. The LAP value used in the
evaluation of all radionuclides is listed in
Table 7.
In the final evaluation, both scores for
trueness and precision are combined. A
result must obtain an “acceptable” score in
both criteria to be assigned the final score
“acceptable”. Obviously, if a score of “not
acceptable” was obtained for both trueness
and precision, the final score will also be
“not acceptable”. In cases where either
precision or trueness is “not acceptable”, a
further check is applied. The reported
result relative bias (R. Bias) is compared
with the maximum acceptable bias (MAB).
If R. Bias ≤ MAB, the final score will be
“warning. “Warning” will reflect mainly
two situations. The first situation will be a
result with small measurement uncertainty;
however its bias is still within MAB. The
second situation will appear when result
close to the assigned property value are
reported, but the associated uncertainty is
large. If R. Bias > MAB, the result will be
“Not Acceptable”. The MAB value used in
2
the evaluation of all radionuclides is listed
in Table 7.
If the evaluation approach and/or
acceptance criteria applied in this PT are
not appropriate for the types of analyses
and application performed in one of the
participating laboratories, it is suggested to
apply a self- scoring evaluation system
which could fits specific requirements.
3.3 The z-score value
The z-score is calculated from the
laboratory results, the assigned value and a
standard deviation in accordance with the
following equation:
z
Score
Value
=
Analyst
−Value
σ
IAEA
On the basis of the “fitness for purpose”
principle, the target value for the standard
deviation (σ) is:
0.10 x ValueIAEA
The laboratory performance is evaluated as
satisfactory if | z Score | ≤ 2; questionable
for 2

given level of probability. The advantage
of the utest is that it takes into consideration
the propagation of measurement
uncertainties when defining the normalised
error. This is especially useful when
evaluating results, which uncertainty may
overlap with the reference interval.
It should be noted that the choice of the
significance level is subjective. For this
proficiency test we have set the limiting
value for the u-test parameter to 2.58 for a
level of probability at 99 % to determine if
a result passes the test (u < 2.58).
The MAB value used in the evaluation of
all radionuclides is listed in Table 7.
Page 19

Radionuclide
Page 20
Soil
sample 01
LAP (%) MAB (%)
Grass
Sample 02
Water
Sample 03
Soil
sample 01
Grass
Sample 02
Water
Sample 03
40 K - 20 - - 20 -
54 Mn 20 - 15 20 - 15
60 Co 20 - 15 20 - 15
65 Zn 20 - 15 20 - 15
109 Cd 25 - 20 25 - 20
134 Cs 20 - 15 20 - 15
137 Cs 20 20 15 20 20 15
210 Pb 30 - 30 30 - 30
241 Am 25 - 25 25 - 20
Table 7. The acceptable limits for LAP and MAB used for the evaluation in the IAEA-CU-
2006-04 proficiency test.
4. Results and discussion
4.1 General
677 results were reported to the IAEA in
this PT from 38 laboratories in 29
countries. The participants’ data along with
the statistical performance evaluation were
compiled and presented. 30 laboratories
reported within the agreed deadline for the
rapid reporting measurement (three
working days). The overall evaluation
showed that 78 % of all reported results
fulfilled the PT criteria.
Table 8 shows the distribution of results
scored as acceptable/warning/not
acceptable for all evaluated nuclides.
Appendix A shows a summary evaluation
for each laboratory and an outline of the
reported information in the PT
questionnaire regarding the applied
analytical technique. Performance
evaluation tables sorted by analyte are
reported in Appendix B, while the
performance evaluation tables sorted by
laboratory code are presented in Appendix
C.
4.2 Counting time, mass of the sample
and moisture content
The potential negative effect of rapid
reporting on the quality of the results was
examined.
There was not any correlation or trend
between the number of working days
elapsed between the samples receipt and
results reporting and the level of
performance.
It was found that the laboratories which
reported their results after four or five
working days did not show a better
performance than those laboratories who
respected the deadline; this is clearly
demonstrated in Figure 4.
The reported values for counting time,
mass of the measured sample and moisture
20

content were plotted (Figures 5, 6 7)
against the average of the obtained
acceptable scores for each laboratory. It
can be seen that the counting time varied
from 3000 to 250000 second, the moisture
content varied from 0.1 % to 4.5 % and
from 1.4 % to 34 % in soil and grass
respectively. Two laboratories reported
high moisture content and it seems to be
the reason for the lower performance of
these laboratories.
The sample mass in soil was between 3.5 g
and 192 g and in grass was between 1.35 g
and 34 g with no effect on the
performance.
4.3 Uncertainty
Most of the laboratory have followed the
international guides for expression of
uncertainties [11,12] and combined ‘all
identified sources’ of uncertainty. Some
participating laboratories gave detailed
formulas and uncertainty data. On the other
hand a few laboratories reported only
uncertainty values produced by their
software without knowing details what was
included in this information.
The reported values for the uncertainties in
this PT were in most cases realistic; few
laboratories reported too small
uncertainties which could lead to a
warning score.
Page 21

Page 22
Nuclide
No. of reported
results
"Acceptable" results (%) "Warning" results (%) "Not Acceptable" results (%)
soil grass water soil grass water soil grass water soil grass water
40 K 38 76 13 11
54 Mn 37 38 81 90 18 5 2 5
60 Co 38 38 95 100 3 0 2 0
65 Zn 37 37 92 95 8 2.5 0 2.5
109 Cd 34 34 44 53 3 12 53 35
134 Cs 37 37 92 76 5 19 3 5
137 Cs 37 38 37 87 68 92 10 24 3 3 8 5
210 Pb 30 28 60 43 7 14 33 43
241 Am 34 36 70 84 21 6 9 10
Table 8. Summary evaluation of all nuclides in the three samples.

Page 23
Percentage of the total Acceptable results per Lab
110
100
90
80
70
60
50
40
1 1 1 1 1 1 2 2 2 2 2 2 2 2 2 2 2 2 3 3 3 3 3 3 3 3 3 3 3 3 3 3 4 4 4 4 4 5 5
Number of elapsed working days from the date of samples receipt and results reporting
Figure 4. Analytical performance level vs. number of elapsed working days from the date of samples receipt and results reporting. The line
represents the percentage of the total acceptable results.

Page 24
Fig u re 5. T h e effect o f th e co u n tin g time, ma s s o f th e mea s u r ed s o il s a mp le a n d mo is tu r e co n ten t o n th e level o f th e p er fo r ma n ce.

Page 25
Fig u re 6. T h e effect o f th e co u n tin g time, ma s s o f th e mea s u r ed g r a s s s a mp l e a nd mo is tu r e co n ten t o n th e level o f th e p er fo r m a n ce.

Page 26
Fig u re 7. T h e effect o f th e co u n tin g time a n d th e ma s s o f th e mea s u r ed w a ter s a mp le o n th e lev el o f th e p er fo r man ce.
26

4.4 Calibration
The following calibration methods were
reported:
• Calibration using multi gamma
standard source;
• Calibration using single gamma
standard sources;
• Calibration using computational model;
• Calibration using a spiked material;
• Calibration using matrix certified
reference materials;
5. Conclusions
This proficiency test exercise was
successfully completed. Most participants
were able to quantify all the nuclides in the
three matrices with acceptable trueness and
precision.
The evaluation results show that there are
no specific measurement problems for
40 K0, 54 Mn, 60 C0, 65 Zn, 134 Cs, 137 Cs, and
241 Am.
The most problematic nuclides were 109 Cd
and 210 Pb in soil.
In the case of 109 Cd in soil only 45 % of all
reported results respectively were in
agreement with the IAEA target values.
The main reason for the “Not Acceptable”
scores in 109 Cd results could be attributed
to the overestimation of peak area due to
unresolved interference around the region
of the 88 keV in a densely populated X-ray
region which is difficult to resolve.
210 Pb which is a low energy nuclide (~45
keV) was also a problematic analyte,
where results show a significant bias and
incomparability among the laboratories. It
is suggested that the major sources of the
bias and incomparability in 210 Pb results
could be attributed to the inappropriate
detector calibration in the low energy
range and to the overestimation or
underestimation of the self attenuation
factor. In certain laboratories the efficiency
Page 27
calibration was extrapolated, which led to
large discrepancies.
The need to produce new matrix reference
materials for both 109 Cd and 210 Pb is
obvious to assist in method validation and
quality control of different matrices.
It is recommended to repeat the same
exercise with water and soil to check if the
laboratories were able to introduce proper
corrective actions to improve the results of
109 Cd and 210 Pb.
The laboratories showed the lowest
performance for the grass sample in which
only 68 % of the laboratories gave an
acceptable result for 137 Cs. The laboratory
performance for 137 Cs was considerably
better for soil and water (acceptable results
85 %). Considering the high activity
concentration of 137 Cs in the grass sample
(11320 Bq kg -1 ) this low performance
could be due only to an incorrect
calibration for this type of matrix and/or to
a wrong evaluation of the moisture content.
This result should suggest to the
laboratories to review their calibration
procedures for this type of matrices and to
improve their method for moisture content
calculation.
Generally speaking, this exercise provided
the possibility to quantify the level of
analytical performance of the ALMERA
network members and it could be a step
forwards the improvement of the network
performance in the determination of
gamma emitting radionuclides.

6. References
1. Report of the Second Research Coordination Meeting on the Coordinated Research
Programme “Rapid instrumental and separation methods for monitoring radionuclides in
food and environmental samples”, IAEA/AL/056, p. 38, August 2001.
2. Report of the First Research Coordination Meeting on the Coordinated Research
Programme “Development and selection of analytical techniques for measuring
accidentally released radionuclides in environment”, IAEA/AL/082, p. 30, December
1994.
3. A. Shakhashiro, Z. Radecki, A. Trinkl, U. Sansone and T. Benesch, “Final Report on the
Proficiency Test of the Analytical Laboratories for the Measurement of Environmental
Radioactivity (ALMERA) Network”, IAEA/AL/152, p.242, August 2005.
4. A. Shakhashiro, A. M. Gondin da Fonseca Azeredo, U. Sansone, A. Fajgelj, Matrix
Materials For Proficiency Testing: Optimization of a Procedure for Spiking Soil With
Gamma-Emitting Radionuclides, Anal Bioanal Chem, DOI 10.1007/s00216-006-0772-z,
August 2006.
5. D. L. Duewer, A Robust Approach for the Determination of CCQM Key Comparison
Reference Values and Uncertainties, Working document CCQM/04-15, BIPM, 2004.
www.bipm.info/cc/CCQM/Allowed/10/CCQM04-15.pdf.
6. ISO/IEC Guide 35:2000, Certification of reference materials-General and statistical
principles, ISO, Geneva, Switzerland.
7. A. Shakhashiro, U. Sansone, CCRI(II)-S4 Supplementary Comparison on the
Determination of Gamma Emitting Radionuclides in Soil, Grass and Water, Draft Report
IAEA/AL/176, March 2007.
8. ISO/IEC 17025:2005, General Requirements for the Competence of Testing and
Calibration Laboratories, ISO, Geneva, Switzerland.
9. A. Shakhashiro, A. Fajgelj, U. Sansone, Comparison of Different Approaches To Evaluate
Proficiency Test Data, Presented and accepted in the publications of the International
Workshop on Combining and Reporting Analytical Results. The Role of (metrological)
Traceability and (measurement) Uncertainty for Comparing Analytical Results, Rome 6-8
March, 2006.
10. C.J. Brookes, I.G. Betteley, S.M. Loxton, Fundamentals of Mathematics and Statistics,
Wiley 1979.
11. Quantifying Uncertainty in Nuclear Analytical Measurements, IAEA TECDOC-1401,
IAEA Vienna, Austria, 2004.
12. Quantifying Uncertainties in Analytical Measurements, Eurachem/Citac Guide, 2000.
Page 28

List of appendixes
Appendix A: Summary evaluation sorted by laboratory code and outline of reported
technical information
Appendix B: Performance evaluation tables sorted by radionuclide
Appendix C: Performance evaluation tables sorted by laboratory code
Appendix D: List of participating laboratories
Page 29

Appendix A: Summary evaluation sorted by laboratory code
and outline of reported technical information

Lab.
code
Appendix A: Summary evaluation sorted by laboratory code and outline of the reported technical information
Accepted
Counting Time
% Soil Grass Water
291 100 74807 29211 135585 Yes
Method
Validation Accreditation
Selfdeclaration,
applying a
QAS
Appendix A, Page 1
Detector Energy
range
40 keV - 2.8 MeV
292 94 82000 95000 96000 Yes No 30-3000 keV
294 89 54000 54000 54000 No Yes
296 83 35000 30000 30000 No
UKAS
accreditation
ISO 17025
40 - 2000 (50 -
1800)
59.5keV To
1.835MeV
297 83 86400 86400 86400 No No 0 - 2 MeV
298 83 86400 86400 86400 Yes
300 100 25767 74686 74423 Yes
UKAS
accreditation,
ISO 17025
ISO
17025:2005
15 - 2000KeV
10 - 2700 keV
Efficiency
calibration
Method
Selective
Standard
Nuclide
Multinuclide
Standard
Mathematical
Approach
Multinuclide
Standard
Selective
Standard
Nuclide
Multinuclide
Standard
Multinuclide
Standard
Applied corrections
Self-attenuation and coincidencesumming
using the Monte Carlo
program GESPECOR
Decay, density, coincidence
summing, self absorption of 46.5
keV in sample in petri dish
geometry by separate measurement
with Pb-210 point source
Background, density (not for
composition), coincidence
Corrections applied to Cs-134 to
compensate for TCS. Density
correction accounted for during
calibration.
Cs-134 abd Co-60: activity
concentration x 1.1 for true
coincidence summing.
Peaked background correction.
Dry weight
coincidence summing
decay

Page 2
Lab.
code
Accepted
Counting Time
% Soil Grass Water
303 100 60532 58778 78605 Yes
304 83 20856 18434 50112 Yes
Method
Validation Accreditation
305 22 16220 16385 75289 No No
Not
accredited, but
we apply a
QAS.
YES,
laboratory is
accredited
(ISO 17025).
Detector Energy
range
20 - 3000 keV
20-2700 keV
3.92-1837.95 KeV
22.17-2016.3 KeV
3.87-2141.70 KeV
306 89 68550 69680 65560 Yes Yes 5 - 3000 keV
307 78 50000 50000 50000 Yes
308 78 86400 86400 54000 Yes
No, we apply a
QAS.
Yes, according
to Standard
ISO/IEC
17025
20 -2000 keV
100 - 10000 keV;
10 -1000 keV
Efficiency
calibration
Method
Multinuclide
Standard
Multinuclide
Standard
Multinuclide
Standard
Mathematical
Approach
Multinuclide
Standard
Multinuclide
Standard
Applied corrections
Background substraction, decay
correction, efficiency correction,
moisture content correction, self
absorption correction for low energy
gammas (Pb-210 and Am-241)
using the method by Cutshall.
Sample density was taken into
consideration with the same density
calibration source.
Information not provided
Background, multliplet
deconvolution, dead time and pile
up (pulser method), efficiency,
radon exhalation, stripping, x-ray
escape, true coincidence summing,
decay
Correction only for dried soil and
grass mass.
We do not apply correction on data
calculated but we rather expand the
uncertainty.
310 72 60000 60000 60000 No not provided Information not provided

Lab.
code
Accepted
Counting Time
% Soil Grass Water
Method
Validation Accreditation
Detector Energy
range
311 100 43200 43200 43200 No No 20-2000 keV
313 67 60000 60000 60000 No
314 94 200000 60000 250000 No Yes.
0-2000; 0-2700;
0-2000 keV
315 67 110000 60000 100000 Yes No. 10-2000 keV
Efficiency
calibration
Method
Multinuclide
Standard
Information
not provided
Multinuclide
Standard
Multinuclide
Standard
318 72 72000 72000 72000 No No. not provided
Applied corrections
Cascade summing correction
Information not provided
Page 3
Correction for coincidence
summing
Correction for difference in density,
composition and geometry with
calibration sample.
R.M.W. Overwater, P. Bode, J.J.M.
de Goeij, Gamma-ray Spectroscopy
of Voluminous Samples:
Corrections for Source Geometry
and Self-attenuation, Nuclear
Instruments and Methods, 1993,
A324 p. 209-218.
We actually used several methods to
calculate the efficiency.
multinuclide, individual nuclides,
and mathematical. A sum
correction was applied for Cs-134
using the known peak efficiencies
for the decay gammas and an
estimated peak to compton ratio
specific to the detector used for the
measurement.
Information not provided

Page 4
Lab.
code
Accepted
Counting Time
% Soil Grass Water
Method
Validation Accreditation
Detector Energy
range
319 67 52524 82738 68655 Yes No. 15- 2800 keV
320 50 74970 36471 50348 No
No, the
laboratory has
implemented a
QAS.
30 - 1700 keV
321 50 80000 20000 80000 Yes No 40 keV - 10MeV
322 72 65035 48075 60000 Yes
Accredited
(ISO/IEC
17025:1999)
34 - 2642 keV
40 - 3066 keV
Efficiency
calibration
Method
Multinuclide
Standard
Multinuclide
Standard
Selective
Standard
Nuclide
Multinuclide
Standard
Applied corrections
Software used was Genie2000 of
CANBERRA.
Cascade summing corrections and
density and mineralogy efficiency
corrections were performed by using
Genie/Labsocs routines.
Self-absorption evaluations were
also considered by experimental
measurements.
Decay correction
humidity correction
density correction (efficiency
adjusted by Monte Carlo modelling)
Water : No corrections
Soil : Corrections are applied for
Pb-210, Cd-109 and AM-241
energies using a spiked soil sample
of equivalent density.
Grass : No corrections
Decay correction.
Attenuation correction.
Summing effect correction (if we
have multi gamma emitting
radionuclide).
Wet weight correction.

Lab.
code
Accepted
Counting Time
% Soil Grass Water
325 67 38081 32419 74814 Yes
327 72 28800 60000 60000 Yes
Method
Validation Accreditation
No .
Yes we apply
a QAS.
under
preparation for
ISO 17025
Detector Energy
range
50 - 2000 keV
4 - 2000 keV
40 - 2100 keV
331 56 44000 44000 50000 Yes No 10-4000 keV
332 50 29334 61676 77656 Yes No
334 67 69743 70127 68700 No
No. In
preparation
46 - 2000 keV
335 78 21405 63669 126380 No No 0-2000 keV
336 50 60000 60000 60000 Information not provided
Efficiency
calibration
Method
Multinuclide
Standard
Mathematical
Approach
Multinuclide
Standard
Multinuclide
Standard
Multinuclide
Standard
Multinuclide
Standard
Applied corrections
Page 5
Self Attenuation and Absorption
correction for different densities.
Dual curve (Empirical curve +linear
curve)
Coincidence Correction for Water
and Soil
No density and Self Attenuation
correction due to time limitation
The detector is calibrated with
different geometries, depending on
needs,
Detector response correction factors
and background consideration are
used
No corrections were made for selfabsorptions
or true coincidence
summing.
Decay corrections
Self-absorption corrections for
photons < 200keV

Page 6
Lab.
code
Accepted
Counting Time
% Soil Grass Water
338 61 82500 70000 65000 Yes
341 56 56509 55479 60000 Yes
Method
Validation Accreditation
No
accreditation.
Applied QAS
No, under
preparation.
Detector Energy
range
40 - 2000 keV
40 -2000 keV
342 83 8000 3000 67000 Yes No 55-2000 keV
344 72 237266 235806 237151 No No 30 – 3000 keV
347 89 62300 70800 77300 Yes No 45 - 2000 keV
348 89 60189 58865.5 47006.5 Yes
No, QAS is
applied
40 - 1750 keV
349 61 60000 60000 60000 Yes Not yet. 100-2000 keV
Efficiency
calibration
Method
Multinuclide
Standard
Multinuclide
Standard
Multinuclide
Standard
Selective
Standard
Nuclide
Multinuclide
Standard
Multinuclide
Standard
Multinuclide
Standard
Applied corrections
Background correction
Mass + Homogeneity +Humidity
Detector efficiency
Standard software Genie 2000 V3.0
corrections
Decay correction between the
measurement and the reference date
decay during acquisition;
peaked background correction
Self-attenuation correction,
Summing correction,
Decay correction
Coincidence correction
None
Automatic software corrections and
self absorption correction according
to Cutshall et.al.(1982).
Since the geometry of the samples
and standards were the same no
corrections were applied.

Lab.
code
Accepted
Counting Time
% Soil Grass Water
Method
Validation Accreditation
Detector Energy
range
351 100 67000 12000 40000 Yes No 10-10000 keV
Efficiency
calibration
Method
Multinuclide
Standard
Applied corrections
Mass-attenuation
Matrix Self-absorption
Sample height
Cascade sum correction
Page 7

Appendix B: Performance evaluation tables sorted by
radionuclide

Evaluation results of K-40 in grass, sample no 2
Target Value: 1059.0 ± 28.0 [Bq/kg]
38 reported results
Warning
13 %
Not
Acceptable
11 %
Acceptable
76 %
Appendix B, Page 1 K-40 in grass, sample no 2

Lab
code
Lab.
Value
Lab.
Unc.
Unc.
[%]
Rel.
Bias
Z-Score U-Test Ratio A1 A2 True
291 1049.0 25.00 2.38 -0.94 -0.09 -0.27 0.99 10.00 96.84 A 3.56 A A
292 1155.0 116.00 10.04 9.07 0.91 0.8 1.09 96.00 307.88 A 10.39 A A
294 1090.0 110.00 10.09 2.93 0.29 0.27 1.03 31.00 292.85 A 10.43 A A
296 942.42 40.39 4.29 -11.01 -1.1 -2.37 0.89 116.58 126.80 A 5.04 A A
297 859.00 50.00 5.82 -18.89 -1.89 -3.49 0.81 200.00 147.85 N 6.39 A W
298 1186.0 72.00 6.07 11.99 1.2 1.64 1.12 127.00 199.31 A 6.62 A A
300 1161.0 88.00 7.58 9.63 0.96 1.1 1.1 102.00 238.26 A 8.03 A A
303 1108.0 69.00 6.23 4.63 0.46 0.66 1.05 49.00 192.12 A 6.77 A A
304 1040.7 63.59 6.11 -1.72 -0.17 -0.26 0.98 18.23 179.26 A 6.66 A A
305 1254.6 44.18 3.52 18.47 1.85 3.74 1.18 195.60 134.95 N 4.40 A W
306 985.00 70.00 7.11 -6.99 -0.7 -0.98 0.93 74.00 194.51 A 7.58 A A
307 1040.0 48.90 4.70 -1.79 -0.18 -0.34 0.98 19.00 145.38 A 5.39 A A
308 947.01 59.93 6.33 -10.58 -1.06 -1.69 0.89 111.99 170.66 A 6.86 A A
310 1155.0 73.00 6.32 9.07 0.91 1.23 1.09 96.00 201.72 A 6.85 A A
311 1060.0 160.00 15.09 0.09 0.01 0.01 1.0 1.00 419.07 A 15.32 A A
313 1020.0 35.00 3.43 -3.68 -0.37 -0.87 0.96 39.00 115.64 A 4.33 A A
314 1060.0 80.00 7.55 0.09 0.01 0.01 1.0 1.00 218.68 A 8.00 A A
315 990.00 30.00 3.03 -6.52 -0.65 -1.68 0.93 69.00 105.87 A 4.02 A A
318 1195.0 42.00 3.51 12.84 1.28 2.69 1.13 136.00 130.23 N 4.40 A W
319 1276.5 37.20 2.91 20.54 2.05 4.67 1.21 217.50 120.12 N 3.93 A N
320 1703.0 70.00 4.11 60.81 6.08 8.54 1.61 644.00 194.51 N 4.89 A N
321 984.00 40.00 4.07 -7.08 -0.71 -1.54 0.93 75.00 125.97 A 4.85 A A
322 1139.0 62.00 5.44 7.55 0.76 1.18 1.08 80.00 175.52 A 6.05 A A
325 1160.0 82.00 7.07 9.54 0.95 1.17 1.1 101.00 223.55 A 7.55 A A
327 958.00 45.00 4.70 -9.54 -0.95 -1.91 0.9 101.00 136.74 A 5.39 A A
331 885.00 17.00 1.92 -16.43 -1.64 -5.31 0.84 174.00 84.51 N 3.27 A W
332 1040.0 90.00 8.65 -1.79 -0.18 -0.2 0.98 19.00 243.18 A 9.05 A A
334 1093.0 48.00 4.39 3.21 0.32 0.61 1.03 34.00 143.37 A 5.13 A A
335 1210.0 40.00 3.31 14.26 1.43 3.09 1.14 151.00 125.97 N 4.23 A W
336 1028.5 14.00 1.36 -2.88 -0.29 -0.97 0.97 30.50 80.77 A 2.97 A A
338 1082.0 103.00 9.52 2.17 0.22 0.22 1.02 23.00 275.38 A 9.88 A A
341 1428.4 33.54 2.35 34.88 3.49 8.45 1.35 369.40 112.72 N 3.54 A N
342 983.00 55.00 5.60 -7.18 -0.72 -1.23 0.93 76.00 159.23 A 6.19 A A
344 1100.0 60.00 5.45 3.87 0.39 0.62 1.04 41.00 170.83 A 6.06 A A
347 1090.0 161.00 14.77 2.93 0.29 0.19 1.03 31.00 421.61 A 15.01 A A
348 1036.6 119.20 11.50 -2.12 -0.21 -0.18 0.98 22.40 315.91 A 11.80 A A
349 1378.5 115.26 8.36 30.17 3.02 2.69 1.3 319.53 306.02 N 8.77 A N
351 897.00 110.00 12.26 -15.30 -1.53 -1.43 0.85 162.00 292.85 A 12.54 A A
Appendix B, Page 2 K-40 in grass, sample no 2
P
Prec.
Final
Score

Evaluation results of Mn-54 in soil, sample no 1
Target Value: 48.0 ± 0.98 [Bq/kg]
37 reported results
Warning
16 %
Not
Acceptable
3 %
Acceptable
81 %
Appendix B, Page 3 Mn-54 in soil, sample no 1

Lab
code
Lab.
Value
Lab.
Unc.
Unc.
[%]
Rel.
Bias
Z-Score U-Test Ratio A1 A2 True P Prec.
291 49.90 0.70 1.40 3.96 0.4 1.58 1.04 1.90 3.11 A 2.48 A A
292 50.20 5.00 9.96 4.58 0.46 0.43 1.05 2.20 13.15 A 10.17 A A
294 51.00 4.00 7.84 6.25 0.62 0.73 1.06 3.00 10.63 A 8.10 A A
296 52.62 3.02 5.74 9.62 0.96 1.46 1.1 4.62 8.19 A 6.09 A A
297 47.10 2.40 5.10 -1.87 -0.19 -0.35 0.98 0.90 6.69 A 5.49 A A
298 52.60 2.60 4.94 9.58 0.96 1.66 1.1 4.60 7.17 A 5.35 A A
300 47.10 2.40 5.10 -1.87 -0.19 -0.35 0.98 0.90 6.69 A 5.49 A A
303 49.60 2.90 5.85 3.33 0.33 0.52 1.03 1.60 7.90 A 6.19 A A
304 55.46 2.30 4.15 15.54 1.55 2.98 1.16 7.46 6.45 N 4.62 A W
305

Evaluation results of Mn-54 in water, sample no 3
Target Value: 4.89 ± 0.017 [Bq/kg]
38 reported results
Not
Acceptable
Warning 5 %
5 %
Acceptable
90 %
Appendix B, Page 5 Mn-54 in water, sample no 3

Lab
code
Lab.
Value
Lab.
Unc.
Unc.
[%]
Rel.
Bias
Z-Score U-Test Ratio A1 A2 True P Prec.
291 4.77 0.12 2.52 -2.45 -0.25 -0.99 0.98 0.12 0.31 A 2.54 A A
292 4.96 0.56 11.29 1.43 0.14 0.12 1.01 0.07 1.45 A 11.30 A A
294 4.10 0.40 9.76 -16.16 -1.62 -1.97 0.84 0.79 1.03 A 9.76 A A
296 5.16 0.34 6.67 5.52 0.55 0.78 1.06 0.27 0.89 A 6.68 A A
297 4.65 0.27 5.81 -4.91 -0.49 -0.89 0.95 0.24 0.70 A 5.82 A A
298 4.96 0.30 6.05 1.43 0.14 0.23 1.01 0.07 0.78 A 6.06 A A
300 5.05 0.26 5.15 3.27 0.33 0.61 1.03 0.16 0.67 A 5.16 A A
303 5.11 0.35 6.85 4.50 0.45 0.63 1.04 0.22 0.90 A 6.86 A A
304 4.83 0.19 3.93 -1.15 -0.11 -0.29 0.99 0.06 0.49 A 3.95 A A
305 4.92 0.31 6.26 0.68 0.07 0.11 1.01 0.03 0.80 A 6.27 A A
306 4.90 0.30 6.12 0.20 0.02 0.03 1.0 0.01 0.78 A 6.13 A A
307 4.93 0.26 5.33 0.82 0.08 0.15 1.01 0.04 0.68 A 5.35 A A
308 5.02 0.42 8.37 2.66 0.27 0.31 1.03 0.13 1.08 A 8.37 A A
310 5.18 0.37 7.14 5.93 0.59 0.78 1.06 0.29 0.96 A 7.15 A A
311 4.40 0.27 6.14 -10.02 -1.0 -1.81 0.9 0.49 0.70 A 6.15 A A
313 4.66 0.15 3.22 -4.70 -0.47 -1.52 0.95 0.23 0.39 A 3.24 A A
314 4.60 0.30 6.52 -5.93 -0.59 -0.97 0.94 0.29 0.78 A 6.53 A A
315 4.73 0.14 2.96 -3.27 -0.33 -1.13 0.97 0.16 0.36 A 2.98 A A
318 4.80 0.20 4.17 -1.84 -0.18 -0.45 0.98 0.09 0.52 A 4.18 A A
319 5.50 0.20 3.64 12.47 1.25 3.04 1.12 0.61 0.52 N 3.65 A W
320 5.90 0.30 5.08 20.65 2.07 3.36 1.21 1.01 0.78 N 5.10 A N
321 5.61 0.17 3.03 14.72 1.47 4.21 1.15 0.72 0.44 N 3.05 A W
322 5.09 0.22 4.32 4.09 0.41 0.91 1.04 0.20 0.57 A 4.34 A A
325 5.08 0.19 3.74 3.89 0.39 1.0 1.04 0.19 0.49 A 3.76 A A
327 4.85 0.26 5.36 -0.82 -0.08 -0.15 0.99 0.04 0.67 A 5.37 A A
331 5.30 0.20 3.77 8.38 0.84 2.04 1.08 0.41 0.52 A 3.79 A A
332 47.50 2.45 5.16 871.37 87.14 17.39 9.71 42.61 6.32 N 5.17 A N
334 5.13 0.21 4.09 4.91 0.49 1.14 1.05 0.24 0.54 A 4.11 A A
335 4.90 0.30 6.12 0.20 0.02 0.03 1.0 0.01 0.78 A 6.13 A A
336 5.10 0.50 9.80 4.29 0.43 0.42 1.04 0.21 1.29 A 9.81 A A
338 4.64 0.14 3.02 -5.11 -0.51 -1.77 0.95 0.25 0.36 A 3.04 A A
341 6.34 0.59 9.27 29.71 2.97 2.47 1.3 1.45 1.52 A 9.28 A A
342 5.24 0.20 3.82 7.16 0.72 1.74 1.07 0.35 0.52 A 3.83 A A
344 4.50 0.23 5.11 -7.98 -0.8 -1.69 0.92 0.39 0.60 A 5.12 A A
347 5.50 0.40 7.27 12.47 1.25 1.52 1.12 0.61 1.03 A 7.28 A A
348 5.10 0.52 10.20 4.29 0.43 0.4 1.04 0.21 1.34 A 10.20 A A
349 4.41 0.31 7.03 -9.82 -0.98 -1.55 0.9 0.48 0.80 A 7.04 A A
351 5.01 0.38 7.58 2.45 0.25 0.32 1.02 0.12 0.98 A 7.59 A A
Appendix B, Page 6 Mn-54 in water, sample no 3
Final
Score

Evaluation results of Co-60 in soil, sample no 1
Target Value: 56.1 ± 1.37 [Bq/kg]
38 reported results
Warning
Not
3 %
Acceptable
2 %
Acceptable
95 %
Appendix B, Page 7 Co-60 in soil, sample no 1

Lab
code
Lab.
Value
Lab.
Unc.
Unc.
[%]
Rel.
Bias
Z-Score U-Test Ratio A1 A2 True P Prec.
291 59.80 0.80 1.34 6.60 0.66 2.33 1.07 3.70 4.09 A 2.78 A A
292 57.70 5.80 10.05 2.85 0.29 0.27 1.03 1.60 15.38 A 10.34 A A
294 63.00 5.00 7.94 12.30 1.23 1.33 1.12 6.90 13.38 A 8.30 A A
296 57.23 2.84 4.96 2.01 0.2 0.36 1.02 1.13 8.14 A 5.53 A A
297 54.30 6.20 11.42 -3.21 -0.32 -0.28 0.97 1.80 16.38 A 11.68 A A
298 58.10 2.80 4.82 3.57 0.36 0.64 1.04 2.00 8.04 A 5.40 A A
300 55.60 2.90 5.22 -0.89 -0.09 -0.16 0.99 0.50 8.27 A 5.76 A A
303 53.60 3.10 5.78 -4.46 -0.45 -0.74 0.96 2.50 8.74 A 6.28 A A
304 58.36 2.84 4.87 4.03 0.4 0.72 1.04 2.26 8.14 A 5.44 A A
305 59.80 2.80 4.68 6.60 0.66 1.19 1.07 3.70 8.04 A 5.28 A A
306 58.20 1.80 3.09 3.74 0.37 0.93 1.04 2.10 5.84 A 3.94 A A
307 53.90 2.74 5.08 -3.92 -0.39 -0.72 0.96 2.20 7.90 A 5.64 A A
308 54.56 4.71 8.63 -2.75 -0.27 -0.31 0.97 1.54 12.66 A 8.97 A A
310 60.60 3.40 5.61 8.02 0.8 1.23 1.08 4.50 9.46 A 6.12 A A
311 58.70 6.60 11.24 4.63 0.46 0.39 1.05 2.60 17.39 A 11.51 A A
313 57.70 1.30 2.25 2.85 0.29 0.85 1.03 1.60 4.87 A 3.32 A A
314 59.00 4.00 6.78 5.17 0.52 0.69 1.05 2.90 10.91 A 7.21 A A
315 54.70 1.40 2.56 -2.50 -0.25 -0.71 0.98 1.40 5.05 A 3.54 A A
318 60.10 1.10 1.83 7.13 0.71 2.28 1.07 4.00 4.53 A 3.05 A A
319 62.30 3.10 4.98 11.05 1.11 1.83 1.11 6.20 8.74 A 5.54 A A
320 58.50 1.70 2.91 4.28 0.43 1.1 1.04 2.40 5.63 A 3.80 A A
321 43.16 1.35 3.13 -23.07 -2.31 -6.73 0.77 12.94 4.96 N 3.97 A N
322 61.40 1.60 2.61 9.45 0.94 2.52 1.09 5.30 5.43 A 3.57 A A
325 55.33 3.23 5.84 -1.37 -0.14 -0.22 0.99 0.77 9.05 A 6.33 A A
327 56.60 1.60 2.83 0.89 0.09 0.24 1.01 0.50 5.43 A 3.74 A A
331 51.10 0.70 1.37 -8.91 -0.89 -3.25 0.91 5.00 3.97 N 2.80 A W
332 55.30 4.00 7.23 -1.43 -0.14 -0.19 0.99 0.80 10.91 A 7.63 A A
334 59.10 1.30 2.20 5.35 0.53 1.59 1.05 3.00 4.87 A 3.29 A A
335 59.00 2.00 3.39 5.17 0.52 1.2 1.05 2.90 6.25 A 4.18 A A
336 59.20 1.10 1.86 5.53 0.55 1.76 1.06 3.10 4.53 A 3.07 A A
338 58.29 1.18 2.02 3.90 0.39 1.21 1.04 2.19 4.66 A 3.17 A A
341 57.26 0.82 1.43 2.06 0.21 0.72 1.02 1.16 4.12 A 2.83 A A
342 55.50 2.10 3.78 -1.07 -0.11 -0.24 0.99 0.60 6.47 A 4.50 A A
344 58.00 2.90 5.00 3.39 0.34 0.59 1.03 1.90 8.27 A 5.56 A A
347 57.10 2.70 4.73 1.78 0.18 0.33 1.02 1.00 7.81 A 5.32 A A
348 48.70 3.13 6.43 -13.19 -1.32 -2.17 0.87 7.40 8.82 A 6.88 A A
349 52.44 4.21 8.03 -6.52 -0.65 -0.83 0.93 3.66 11.42 A 8.39 A A
351 53.00 4.50 8.49 -5.53 -0.55 -0.66 0.94 3.10 12.14 A 8.83 A A
Appendix B, Page 8 Co-60 in soil, sample no 1
Final
Score

Evaluation results of Co-60 in water, sample no 3
Target Value: 5.8 ± 0.04 [Bq/kg]
38 reported results
Acceptable
100%
Appendix B, Page 9 Co-60 in water, sample no 3

Lab
code
Lab.
Value
Lab.
Unc.
Unc.
[%]
Rel.
Bias
Z-Score U-Test Ratio A1 A2 True P Prec.
291 5.87 0.11 1.87 1.21 0.12 0.6 1.01 0.07 0.30 A 2.00 A A
292 6.00 0.64 10.67 3.45 0.34 0.31 1.03 0.20 1.65 A 10.69 A A
294 5.20 0.60 11.54 -10.34 -1.03 -1.0 0.9 0.60 1.55 A 11.56 A A
296 5.59 0.34 6.01 -3.62 -0.36 -0.62 0.96 0.21 0.87 A 6.05 A A
297 5.47 0.62 11.33 -5.69 -0.57 -0.53 0.94 0.33 1.60 A 11.36 A A
298 6.23 0.39 6.26 7.41 0.74 1.1 1.07 0.43 1.01 A 6.30 A A
300 6.04 0.34 5.63 4.14 0.41 0.7 1.04 0.24 0.88 A 5.67 A A
303 6.06 0.37 6.11 4.48 0.45 0.7 1.04 0.26 0.96 A 6.14 A A
304 5.89 0.18 3.05 1.62 0.16 0.51 1.02 0.09 0.48 A 3.13 A A
305 5.45 0.31 5.70 -5.95 -0.59 -1.1 0.94 0.35 0.81 A 5.75 A A
306 6.00 0.20 3.33 3.45 0.34 0.98 1.03 0.20 0.53 A 3.40 A A
307 6.21 0.29 4.70 7.07 0.71 1.39 1.07 0.41 0.76 A 4.75 A A
308 5.33 0.47 8.82 -8.10 -0.81 -1.0 0.92 0.47 1.22 A 8.84 A A
310 5.60 0.33 5.89 -3.45 -0.34 -0.6 0.97 0.20 0.86 A 5.93 A A
311 5.83 0.35 6.00 0.52 0.05 0.09 1.01 0.03 0.91 A 6.04 A A
313 5.79 0.14 2.42 -0.17 -0.02 -0.07 1.0 0.01 0.38 A 2.51 A A
314 6.00 0.40 6.67 3.45 0.34 0.5 1.03 0.20 1.04 A 6.70 A A
315 5.93 0.16 2.70 2.24 0.22 0.79 1.02 0.13 0.43 A 2.78 A A
318 5.90 0.20 3.39 1.72 0.17 0.49 1.02 0.10 0.53 A 3.46 A A
319 6.30 0.30 4.76 8.62 0.86 1.65 1.09 0.50 0.78 A 4.81 A A
320 5.70 0.20 3.51 -1.72 -0.17 -0.49 0.98 0.10 0.53 A 3.58 A A
321 5.93 0.19 3.20 2.24 0.22 0.67 1.02 0.13 0.50 A 3.28 A A
322 6.16 0.26 4.22 6.21 0.62 1.37 1.06 0.36 0.68 A 4.28 A A
325 5.70 0.22 3.86 -1.72 -0.17 -0.45 0.98 0.10 0.58 A 3.92 A A
327 5.55 0.19 3.42 -4.31 -0.43 -1.29 0.96 0.25 0.50 A 3.49 A A
331 5.60 0.20 3.57 -3.45 -0.34 -0.98 0.97 0.20 0.53 A 3.64 A A
332 5.39 0.50 9.28 -7.07 -0.71 -0.82 0.93 0.41 1.29 A 9.30 A A
334 5.49 0.17 3.10 -5.34 -0.53 -1.78 0.95 0.31 0.45 A 3.17 A A
335 5.80 0.30 5.17 0.00 0.0 0.0 1.0 0.00 0.78 A 5.22 A A
336 5.40 0.50 9.26 -6.90 -0.69 -0.8 0.93 0.40 1.29 A 9.28 A A
338 5.57 0.16 2.87 -3.97 -0.4 -1.39 0.96 0.23 0.43 A 2.95 A A
341 6.44 0.34 5.34 10.98 1.1 1.84 1.11 0.64 0.89 A 5.39 A A
342 6.05 0.26 4.30 4.31 0.43 0.95 1.04 0.25 0.68 A 4.35 A A
344 6.20 0.31 5.00 6.90 0.69 1.28 1.07 0.40 0.81 A 5.05 A A
347 6.30 0.30 4.76 8.62 0.86 1.65 1.09 0.50 0.78 A 4.81 A A
348 5.30 0.46 8.68 -8.62 -0.86 -1.08 0.91 0.50 1.19 A 8.71 A A
349 5.56 0.41 7.37 -4.14 -0.41 -0.58 0.96 0.24 1.06 A 7.41 A A
351 5.94 0.38 6.40 2.41 0.24 0.37 1.02 0.14 0.99 A 6.43 A A
Appendix B, Page 10 Co-60 in water, sample no 3
Final
Score

Evaluation results of Zn-65 in soil, sample no 1
Target Value: 77.6 ± 2.54 [Bq/kg]
37 reported results
Warning
8 %
Acceptable
92 %
Appendix B, Page 11 Zn-65 in soil, sample no 1

Lab
code
Lab.
Value
Lab.
Unc.
Unc.
[%]
Rel.
Bias
Z-Score U-Test Ratio A1 A2 True P Prec.
291 80.90 1.40 1.73 4.25 0.43 1.14 1.04 3.30 7.48 A 3.70 A A
292 77.30 7.70 9.96 -0.39 -0.04 -0.04 1.0 0.30 20.92 A 10.49 A A
294 79.00 6.00 7.59 1.80 0.18 0.21 1.02 1.40 16.81 A 8.27 A A
296 87.64 4.95 5.65 12.94 1.29 1.8 1.13 10.04 14.35 A 6.53 A A
297 75.90 4.20 5.53 -2.19 -0.22 -0.35 0.98 1.70 12.66 A 6.43 A A
298 85.50 4.20 4.91 10.18 1.02 1.61 1.1 7.90 12.66 A 5.90 A A
300 73.80 5.20 7.05 -4.90 -0.49 -0.66 0.95 3.80 14.93 A 7.77 A A
303 78.60 4.60 5.85 1.29 0.13 0.19 1.01 1.00 13.56 A 6.71 A A
304 78.26 5.11 6.53 0.85 0.09 0.12 1.01 0.66 14.72 A 7.30 A A
305

Evaluation results of Zn-65 in water, sample no 3
Target Value: 7.27 ± 0.075 [Bq/kg]
37 reported results
Warning Not
2.5 %
Acceptable
2.5 %
Acceptable
95 %
Appendix B, Page 13 Zn-65 in water, sample no 3

Lab
code
Lab.
Value
Lab.
Unc.
Unc.
[%]
Rel.
Bias
Z-Score U-Test Ratio A1 A2 True P Prec.
291 7.33 0.24 3.27 0.83 0.08 0.24 1.01 0.06 0.65 A 3.43 A A
292 6.89 0.88 12.77 -5.23 -0.52 -0.43 0.95 0.38 2.28 A 12.81 A A
294 8.00 0.90 11.25 10.04 1.0 0.81 1.1 0.73 2.33 A 11.30 A A
296 7.90 0.65 8.18 8.67 0.87 0.97 1.09 0.63 1.68 A 8.24 A A
297 6.40 0.42 6.56 -11.97 -1.2 -2.04 0.88 0.87 1.10 A 6.64 A A
298 7.93 0.52 6.56 9.08 0.91 1.26 1.09 0.66 1.36 A 6.64 A A
300 7.33 0.46 6.28 0.83 0.08 0.13 1.01 0.06 1.20 A 6.36 A A
303 7.04 0.53 7.53 -3.16 -0.32 -0.43 0.97 0.23 1.38 A 7.60 A A
304 7.39 0.33 4.47 1.65 0.17 0.35 1.02 0.12 0.87 A 4.58 A A
305

Evaluation results of Cd-109 in soil, sample no 1
Target Value: 177.6 ± 8.4 [Bq/kg]
34 reported results
Not
Acceptable
53 %
Acceptable
44 %
Warning
3 %
Appendix B, Page 15 Cd-109 in soil, sample no 1

Lab
code
Lab.
Value
Lab.
Unc.
Unc.
[%]
Rel.
Bias
Z-Score U-Test Ratio A1 A2 True P Prec.
291 202.00 5.00 2.48 13.74 1.37 2.5 1.14 24.40 25.22 A 5.34 A A
292 276.00 28.00 10.14 55.41 5.54 3.37 1.55 98.40 75.42 N 11.19 A N
294 268.00 35.00 13.06 50.90 5.09 2.51 1.51 90.40 92.86 A 13.89 A A
296 281.27 25.97 9.23 58.37 5.84 3.8 1.58 103.67 70.42 N 10.37 A N
297 278.00 17.00 6.12 56.53 5.65 5.29 1.57 100.40 48.92 N 7.73 A N
298 198.90 11.60 5.83 11.99 1.2 1.49 1.12 21.30 36.95 A 7.51 A A
300 166.00 10.00 6.02 -6.53 -0.65 -0.89 0.93 11.60 33.69 A 7.66 A A
303 197.00 12.00 6.09 10.92 1.09 1.32 1.11 19.40 37.79 A 7.71 A A
304 234.96 17.67 7.52 32.30 3.23 2.93 1.32 57.36 50.48 N 8.88 A N
305

Evaluation results of Cd-109 in water, sample no 3
Target Value: 19.62 ± 0.1 [Bq/kg]
34 reported results
Not
Acceptable
35 %
Warning
12 %
Acceptable
53 %
Appendix B, Page 17 Cd-109 in water, sample no 3

Lab
code
Lab.
Value
Lab.
Unc.
Unc.
[%]
Rel.
Bias
Z-Score U-Test Ratio A1 A2 True P Prec.
291 22.10 1.00 4.52 12.64 1.26 2.47 1.13 2.48 2.59 A 4.55 A A
292 24.80 3.40 13.71 26.40 2.64 1.52 1.26 5.18 8.78 A 13.72 A A
294 19.20 3.30 17.19 -2.14 -0.21 -0.13 0.98 0.42 8.52 A 17.20 N W
296 22.25 2.90 13.02 13.40 1.34 0.91 1.13 2.63 7.48 A 13.03 A A
297 18.90 1.90 10.05 -3.67 -0.37 -0.38 0.96 0.72 4.91 A 10.07 A A
298 31.50 3.30 10.48 60.55 6.06 3.6 1.61 11.88 8.52 N 10.49 A N
300 19.60 1.70 8.67 -0.10 -0.01 -0.01 1.0 0.02 4.39 A 8.69 A A
303 26.10 2.80 10.73 33.03 3.3 2.31 1.33 6.48 7.23 A 10.74 A A
304 17.83 1.08 6.06 -9.12 -0.91 -1.65 0.91 1.79 2.80 A 6.08 A A
305

Evaluation results of Cs-134 in soil, sample no 1
Target Value: 64.2 ± 1.87 [Bq/kg]
37 reported results
Warning
5 %
Not
Acceptable
3 %
Acceptable
92 %
Appendix B, Page 19 Cs-134 in soil, sample no 1

Lab
code
Lab.
Value
Lab.
Unc.
Unc.
[%]
Rel.
Bias
Z-Score U-Test Ratio A1 A2 True P Prec.
291 69.20 0.80 1.16 7.79 0.78 2.46 1.08 5.00 5.25 A 3.13 A A
292 67.40 3.50 5.19 4.98 0.5 0.81 1.05 3.20 10.24 A 5.95 A A
294 68.00 5.00 7.35 5.92 0.59 0.71 1.06 3.80 13.77 A 7.91 A A
296 65.42 3.97 6.07 1.90 0.19 0.28 1.02 1.22 11.32 A 6.73 A A
297 61.50 6.90 11.22 -4.21 -0.42 -0.38 0.96 2.70 18.44 A 11.59 A A
298 60.80 2.90 4.77 -5.30 -0.53 -0.99 0.95 3.40 8.90 A 5.59 A A
300 58.30 2.80 4.80 -9.19 -0.92 -1.75 0.91 5.90 8.69 A 5.62 A A
303 56.30 3.20 5.68 -12.31 -1.23 -2.13 0.88 7.90 9.56 A 6.39 A A
304 64.13 1.98 3.09 -0.10 -0.01 -0.02 1.0 0.07 7.03 A 4.24 A A
305

Evaluation results of Cs-134 in water, sample no 3
Target Value: 13.03 ± 0.1 [Bq/kg]
37 reported results
Warning
19 %
Not
Acceptable
5 %
Acceptable
76 %
Appendix B, Page 21 Cs-134 in water, sample no 3

Lab
code
Lab.
Value
Lab.
Unc.
Unc.
[%]
Rel.
Bias
Z-Score U-Test Ratio A1 A2 True P Prec.
291 13.14 0.15 1.14 0.84 0.08 0.61 1.01 0.11 0.47 A 1.38 A A
292 13.20 0.71 5.38 1.30 0.13 0.24 1.01 0.17 1.85 A 5.43 A A
294 12.30 1.10 8.94 -5.60 -0.56 -0.66 0.94 0.73 2.85 A 8.98 A A
296 13.42 0.79 5.91 2.99 0.3 0.49 1.03 0.39 2.06 A 5.96 A A
297 12.00 1.40 11.67 -7.90 -0.79 -0.73 0.92 1.03 3.62 A 11.69 A A
298 12.20 0.60 4.92 -6.37 -0.64 -1.36 0.94 0.83 1.57 A 4.98 A A
300 12.47 0.44 3.53 -4.30 -0.43 -1.24 0.96 0.56 1.16 A 3.61 A A
303 12.12 0.72 5.94 -6.98 -0.7 -1.25 0.93 0.91 1.88 A 5.99 A A
304 11.83 0.32 2.70 -9.21 -0.92 -3.58 0.91 1.20 0.86 N 2.81 A W
305

Evaluation results of Cs-137 in soil, sample no 1
Target Value: 52.6 ± 1.08 [Bq/kg]
37 reported results
Warning
10 %
Not
Acceptable
3 %
Acceptable
87 %
Appendix B, Page 23 Cs-137 in soil, sample no 1

Lab
code
Lab.
Value
Lab.
Unc.
Unc.
[%]
Rel.
Bias
Z-Score U-Test Ratio A1 A2 True P Prec.
291 55.70 0.80 1.44 5.89 0.59 2.31 1.06 3.10 3.47 A 2.51 A A
292 51.90 2.80 5.39 -1.33 -0.13 -0.23 0.99 0.70 7.74 A 5.77 A A
294 55.00 4.00 7.27 4.56 0.46 0.58 1.05 2.40 10.69 A 7.56 A A
296 53.85 2.82 5.24 2.38 0.24 0.41 1.02 1.25 7.79 A 5.62 A A
297 52.50 2.70 5.14 -0.19 -0.02 -0.03 1.0 0.10 7.50 A 5.54 A A
298 56.70 2.70 4.76 7.79 0.78 1.41 1.08 4.10 7.50 A 5.19 A A
300 50.30 2.80 5.57 -4.37 -0.44 -0.77 0.96 2.30 7.74 A 5.93 A A
303 50.50 2.90 5.74 -3.99 -0.4 -0.68 0.96 2.10 7.98 A 6.10 A A
304 58.02 3.52 6.07 10.31 1.03 1.47 1.1 5.42 9.50 A 6.40 A A
305

Evaluation results of Cs-137 in grass, sample no 2
Target Value: 11320. ± 185.0 [Bq/kg]
38 reported results
Warning
24 %
Not
Acceptable
8 %
Acceptable
68 %
Appendix B, Page 25 Cs-137 in grass, sample no 2

Lab
code
Lab.
Value
Lab.
Unc.
Unc.
[%]
Rel.
Bias
Z-Score U-Test Ratio A1 A2 True P Prec.
291 11504.00 100.00 0.87 1.63 0.16 0.87 1.02 184.00 542.57 A 1.85 A A
292 11235.00 562.00 5.00 -0.75 -0.08 -0.14 0.99 85.00 1526.50 A 5.26 A A
294 11800.00 1000.00 8.47 4.24 0.42 0.47 1.04 480.00 2623.78 A 8.63 A A
296 10330.00 437.00 4.23 -8.75 -0.87 -2.09 0.91 990.00 1224.33 A 4.54 A A
297 9627.00 498.00 5.17 -14.96 -1.5 -3.19 0.85 1693.00 1370.63 N 5.42 A W
298 12441.00 706.00 5.67 9.90 0.99 1.54 1.1 1121.00 1882.98 A 5.91 A A
300 12300.00 1000.00 8.13 8.66 0.87 0.96 1.09 980.00 2623.78 A 8.29 A A
303 11520.00 640.00 5.56 1.77 0.18 0.3 1.02 200.00 1718.80 A 5.79 A A
304 11006.00 525.00 4.77 -2.77 -0.28 -0.56 0.97 314.00 1436.14 A 5.04 A A
305 13058.27 288.40 2.21 15.36 1.54 5.07 1.15 1738.27 884.00 N 2.75 A W
306 10700.00 350.00 3.27 -5.48 -0.55 -1.57 0.95 620.00 1021.38 A 3.66 A A
307 10900.00 457.00 4.19 -3.71 -0.37 -0.85 0.96 420.00 1272.01 A 4.50 A A
308 11024.00 794.30 7.21 -2.61 -0.26 -0.36 0.97 296.00 2104.14 A 7.39 A A
310 11576.00 702.00 6.06 2.26 0.23 0.35 1.02 256.00 1873.00 A 6.28 A A
311 11500.00 1400.00 12.17 1.59 0.16 0.13 1.02 180.00 3643.40 A 12.28 A A
313 11500.00 500.00 4.35 1.59 0.16 0.34 1.02 180.00 1375.47 A 4.64 A A
314 11800.00 800.00 6.78 4.24 0.42 0.58 1.04 480.00 2118.47 A 6.97 A A
315 11300.00 300.00 2.65 -0.18 -0.02 -0.06 1.0 20.00 909.34 A 3.12 A A
318 11757.00 277.00 2.36 3.86 0.39 1.31 1.04 437.00 859.39 A 2.87 A A
319 12170.10 230.80 1.90 7.51 0.75 2.87 1.08 850.10 763.15 N 2.50 A W
320 12807.00 351.00 2.74 13.14 1.31 3.75 1.13 1487.00 1023.67 N 3.19 A W
321 12111.00 244.00 2.01 6.99 0.7 2.58 1.07 791.00 790.01 N 2.59 A W
322 10847.00 406.00 3.74 -4.18 -0.42 -1.06 0.96 473.00 1151.10 A 4.08 A A
325 12600.00 853.00 6.77 11.31 1.13 1.47 1.11 1280.00 2251.90 A 6.96 A A
327 10500.00 212.00 2.02 -7.24 -0.72 -2.91 0.93 820.00 725.93 N 2.60 A W
331 9713.00 13.00 0.13 -14.20 -1.42 -8.67 0.86 1607.00 478.48 N 1.64 A W
332 6910.00 1040.00 15.05 -38.96 -3.9 -4.17 0.61 4410.00 2725.32 N 15.14 A N
334 11710.00 366.00 3.13 3.45 0.34 0.95 1.03 390.00 1058.05 A 3.53 A A
335 12500.00 400.00 3.20 10.42 1.04 2.68 1.1 1180.00 1137.03 N 3.59 A W
336 12597.50 17.60 0.14 11.29 1.13 6.87 1.11 1277.50 479.46 N 1.64 A W
338 11324.00 204.00 1.80 0.04 0.0 0.01 1.0 4.00 710.51 A 2.43 A A
341 14247.00 131.71 0.92 25.86 2.59 12.89 1.26 2927.00 585.91 N 1.88 A N
342 11850.00 370.00 3.12 4.68 0.47 1.28 1.05 530.00 1067.28 A 3.52 A A
344 11800.00 600.00 5.08 4.24 0.42 0.76 1.04 480.00 1619.91 A 5.34 A A
347 12750.00 545.00 4.27 12.63 1.26 2.48 1.13 1430.00 1484.90 A 4.58 A A
348 11488.20 645.80 5.62 1.49 0.15 0.25 1.01 168.20 1733.18 A 5.85 A A
349 14619.47 730.32 5.00 29.15 2.91 4.38 1.29 3299.47 1943.74 N 5.26 A N
351 10930.00 610.00 5.58 -3.45 -0.34 -0.61 0.97 390.00 1644.59 A 5.82 A A
Appendix B, Page 26 Cs-137 in grass, sample no 2
Final
Score

Evaluation results of Cs-137 in water, sample no 3
Target Value: 16.72 ± 0.08 [Bq/kg]
37 reported results
Warning
3 %
Not
Acceptable
5 %
Acceptable
92 %
Appendix B, Page 27 Cs-137 in water, sample no 3

Lab
code
Lab.
Value
Lab.
Unc.
Unc.
[%]
Rel.
Bias
Z-Score U-Test Ratio A1 A2 True P Prec.
291 16.35 0.21 1.28 -2.21 -0.22 -1.65 0.98 0.37 0.58 A 1.37 A A
292 16.80 0.91 5.42 0.48 0.05 0.09 1.0 0.08 2.36 A 5.44 A A
294 16.50 1.50 9.09 -1.32 -0.13 -0.15 0.99 0.22 3.88 A 9.10 A A
296 16.70 0.81 4.82 -0.12 -0.01 -0.02 1.0 0.02 2.09 A 4.84 A A
297 16.78 0.87 5.18 0.36 0.04 0.07 1.0 0.06 2.25 A 5.21 A A
298 18.00 0.90 5.00 7.66 0.77 1.42 1.08 1.28 2.33 A 5.02 A A
300 16.95 0.84 4.96 1.38 0.14 0.27 1.01 0.23 2.18 A 4.98 A A
303 17.30 1.10 6.36 3.47 0.35 0.53 1.03 0.58 2.85 A 6.38 A A
304 16.90 0.55 3.25 1.08 0.11 0.32 1.01 0.18 1.43 A 3.29 A A
305

Evaluation results of Pb-210 in soil, sample no 1
Target Value: 259.5 ± 12.53 [Bq/kg]
30 reported results
Not
Acceptable
33 %
Warning
7 %
Acceptable
60 %
Appendix B, Page 29 Pb-210 in soil, sample no 1

Lab
code
Lab.
Value
Lab.
Unc.
Unc.
[%]
Rel.
Bias
Z-Score U-Test Ratio A1 A2 True P Prec.
291 247.00 10.00 4.05 -4.82 -0.48 -0.78 0.95 12.50 41.36 A 6.30 A A
292 237.00 24.00 10.13 -8.67 -0.87 -0.83 0.91 22.50 69.85 A 11.22 A A
294 127.00 40.00 31.50 -51.06 -5.11 -3.16 0.49 132.50 108.14 N 31.86 N N
297 242.00 16.00 6.61 -6.74 -0.67 -0.86 0.93 17.50 52.43 A 8.19 A A
300 247.00 15.00 6.07 -4.82 -0.48 -0.64 0.95 12.50 50.43 A 7.76 A A
303 297.00 22.00 7.41 14.45 1.45 1.48 1.14 37.50 65.32 A 8.84 A A
304 234.67 19.69 8.39 -9.57 -0.96 -1.06 0.9 24.83 60.21 A 9.68 A A
306 220.00 50.00 22.73 -15.22 -1.52 -0.77 0.85 39.50 132.99 A 23.23 A A
307 31.40 1.72 5.48 -87.90 -8.79 -18.04 0.12 228.10 32.63 N 7.30 A N
308 154.14 9.91 6.43 -40.60 -4.06 -6.6 0.59 105.36 41.22 N 8.04 A N
310 41.20 2.70 6.55 -84.12 -8.41 -17.03 0.16 218.30 33.07 N 8.14 A N
311 191.00 28.00 14.66 -26.40 -2.64 -2.23 0.74 68.50 79.14 A 15.43 A A
313 261.00 32.00 12.26 0.58 0.06 0.04 1.01 1.50 88.66 A 13.18 A A
314 290.00 30.00 10.34 11.75 1.18 0.94 1.12 30.50 83.88 A 11.42 A A
315 187.00 6.00 3.21 -27.94 -2.79 -5.22 0.72 72.50 35.84 N 5.80 A W
318 209.10 20.00 9.56 -19.42 -1.94 -2.14 0.81 50.40 60.89 A 10.71 A A
319 212.10 21.50 10.14 -18.27 -1.83 -1.9 0.82 47.40 64.20 A 11.23 A A
320 160.00 80.30 50.19 -38.34 -3.83 -1.22 0.62 99.50 209.68 A 50.42 N N
321 416.00 31.00 7.45 60.31 6.03 4.68 1.6 156.50 86.27 N 8.88 A N
322 47.10 12.60 26.75 -81.85 -8.18 -11.95 0.18 212.40 45.85 N 27.18 A N
327 213.50 10.10 4.73 -17.73 -1.77 -2.86 0.82 46.00 41.52 N 6.76 A W
331 207.00 21.00 10.14 -20.23 -2.02 -2.15 0.8 52.50 63.09 A 11.24 A A
332 811.00 136.00 16.77 212.52 21.25 4.04 3.13 551.50 352.37 N 17.45 A N
334 176.50 6.00 3.40 -31.98 -3.2 -5.97 0.68 83.00 35.84 N 5.91 A N
335 238.00 17.00 7.14 -8.29 -0.83 -1.02 0.92 21.50 54.49 A 8.62 A A
341 1411.90 294.13 20.83 444.08 44.41 3.91 5.44 1152.4 759.54 N 21.38 A N
342 275.00 22.00 8.00 5.97 0.6 0.61 1.06 15.50 65.32 A 9.34 A A
347 221.00 54.70 24.75 -14.84 -1.48 -0.69 0.85 38.50 144.78 A 25.22 A A
348 227.50 24.98 10.98 -12.33 -1.23 -1.15 0.88 32.00 72.10 A 11.99 A A
351 253.30 18.60 7.34 -2.39 -0.24 -0.28 0.98 6.20 57.86 A 8.79 A A
Appendix B, Page 30 Pb-210 in soil, sample no 1
Final
Score

Evaluation results of Pb-210 in water, sample no 3
Target Value: 9.55 ± 0.15 [Bq/kg]
28 reported results
Not
Acceptable
43 %
Warning
14 %
Acceptable
43 %
Appendix B, Page 31 Pb-210 in water, sample no 3

Lab
code
Lab.
Value
Lab.
Unc.
Unc.
[%]
Rel.
Bias
Z-Score U-Test Ratio A1 A2 True P Prec.
291 10.10 1.00 9.90 5.76 0.58 0.54 1.06 0.55 2.61 A 10.02 A A
292 8.78 1.73 19.70 -8.06 -0.81 -0.44 0.92 0.77 4.48 A 19.77 A A
294 22.00 20.00 90.91 130.37 13.04 0.62 2.3 12.45 51.60 A 90.92 N N
297 7.96 0.85 10.68 -16.65 -1.66 -1.84 0.83 1.59 2.23 A 10.79 A A
300 9.10 1.80 19.78 -4.71 -0.47 -0.25 0.95 0.45 4.66 A 19.84 A A
303 8.30 2.30 27.71 -13.09 -1.31 -0.54 0.87 1.25 5.95 A 27.76 A A
304 7.88 0.94 11.93 -17.51 -1.75 -1.76 0.82 1.67 2.46 A 12.03 A A
305 18.51 5.61 30.33 93.79 9.38 1.6 1.94 8.96 14.49 A 30.37 N N
306 9.40 1.10 11.70 -1.57 -0.16 -0.14 0.98 0.15 2.86 A 11.81 A A
308 6.16 0.36 5.84 -35.50 -3.55 -8.69 0.65 3.39 1.01 N 6.05 A N
310 4.01 0.45 11.22 -58.01 -5.8 -11.68 0.42 5.54 1.22 N 11.33 A N
311 13.50 4.40 32.59 41.36 4.14 0.9 1.41 3.95 11.36 A 32.63 N N
314 9.00 2.00 22.22 -5.76 -0.58 -0.27 0.94 0.55 5.17 A 22.28 A A
318 8.70 3.90 44.83 -8.90 -0.89 -0.22 0.91 0.85 10.07 A 44.86 N W
319 10.90 1.50 13.76 14.14 1.41 0.9 1.14 1.35 3.89 A 13.85 A A
320 29.70 15.20 51.18 210.99 21.1 1.33 3.11 20.15 39.22 A 51.20 N N
321 11.53 4.42 38.33 20.73 2.07 0.45 1.21 1.98 11.41 A 38.37 N W
322 0.34 0.10 29.41 -96.44 -9.64 -51.09 0.04 9.21 0.47 N 29.45 A N
327 7.90 12.90 163.29 -17.28 -1.73 -0.13 0.83 1.65 33.28 A 163.30 N W
331 18.60 1.90 10.22 94.76 9.48 4.75 1.95 9.05 4.92 N 10.34 A N
332 18.50 8.50 45.95 93.72 9.37 1.05 1.94 8.95 21.93 A 45.97 N N
334 7.60 0.68 8.95 -20.42 -2.04 -2.8 0.8 1.95 1.80 N 9.08 A W
335 4.70 0.70 14.89 -50.79 -5.08 -6.77 0.49 4.85 1.85 N 14.98 A N
341 91.80 48.80 53.16 861.26 86.13 1.69 9.61 82.25 125.90 A 53.18 N N
342 9.70 0.70 7.22 1.57 0.16 0.21 1.02 0.15 1.85 A 7.39 A A
347 18.20 2.10 11.54 90.58 9.06 4.11 1.91 8.65 5.43 N 11.64 A N
348 11.50 2.89 25.13 20.42 2.04 0.67 1.2 1.95 7.47 A 25.18 A A
351 9.10 0.71 7.80 -4.71 -0.47 -0.62 0.95 0.45 1.87 A 7.96 A A
Appendix B, Page 32 Pb-210 in water, sample no 3
Final
Score

Evaluation results of Am-241 in soil, sample no 1
Target Value: 96.6 ± 2.78 [Bq/kg]
34 reported results
Not
Acceptable
9%
Warning
21%
Acceptable
70%
Appendix B, Page 33 Am-241 in soil, sample no 1

Lab
code
Lab.
Value
Lab.
Unc.
Unc.
[%]
Rel.
Bias
Z-Score U-Test Ratio A1 A2 True P Prec.
291 95.30 2.10 2.20 -1.35 -0.13 -0.37 0.99 1.30 8.99 A 3.62 A A
292 92.30 9.20 9.97 -4.45 -0.45 -0.45 0.96 4.30 24.80 A 10.37 A A
294 84.00 25.00 29.76 -13.04 -1.3 -0.5 0.87 12.60 64.90 A 29.90 N W
296 90.33 5.13 5.68 -6.49 -0.65 -1.07 0.94 6.27 15.05 A 6.37 A A
297 85.20 4.60 5.40 -11.80 -1.18 -2.12 0.88 11.40 13.87 A 6.12 A A
298 95.90 5.60 5.84 -0.72 -0.07 -0.11 0.99 0.70 16.13 A 6.51 A A
300 91.10 5.00 5.49 -5.69 -0.57 -0.96 0.94 5.50 14.76 A 6.20 A A
303 93.10 6.30 6.77 -3.62 -0.36 -0.51 0.96 3.50 17.77 A 7.35 A A
304 92.91 5.71 6.15 -3.82 -0.38 -0.58 0.96 3.69 16.39 A 6.79 A A
305

Evaluation results of Am-241 in water, sample no 3
Target Value: 3.66 ± 0.023 [Bq/kg]
33 reported results
Warning
6%
Not
Acceptable
10%
Acceptable
84%
Appendix B, Page 35 Am-241 in water, sample 03

Lab
code
Lab.
Value
Lab.
Unc.
Unc.
[%]
Rel.
Bias
Z-Score U-Test Ratio A1 A2 True P Prec.
291 3.44 0.12 3.49 -6.01 -0.6 -1.8 0.94 0.22 0.32 A 3.54 A A
292 4.32 0.50 11.57 18.03 1.8 1.32 1.18 0.66 1.29 A 11.59 A A
294 3.10 0.60 19.35 -15.30 -1.53 -0.93 0.85 0.56 1.55 A 19.37 A A
296 3.83 0.34 8.98 4.64 0.46 0.49 1.05 0.17 0.89 A 9.00 A A
297 3.71 0.26 7.01 1.37 0.14 0.19 1.01 0.05 0.67 A 7.04 A A
298 4.29 1.07 24.94 17.21 1.72 0.59 1.17 0.63 2.76 A 24.95 N W
300 3.72 0.23 6.18 1.64 0.16 0.26 1.02 0.06 0.60 A 6.21 A A
303 3.46 0.31 8.96 -5.46 -0.55 -0.64 0.95 0.20 0.80 A 8.98 A A
304 4.01 0.17 4.24 9.54 0.95 2.03 1.1 0.35 0.44 A 4.29 A A
305

Appendix C: Performance evaluation tables sorted by
laboratory code

The IAEA-CU-2006-04 ALMERA open proficiency test on the determination of gamma emitting radionuclides
Laboratory No. 291, PHYSIKALISCH-TECHNISCHE BUNDESANSTALT, BRAUNSCHWEIG, GERMANY
Samples received on 2006-06-20, results submitted on 2006-06-23
Evaluation on Sample No. 1, Soil Reference Date: 01-June-2006
Analyte IAEA Value
[Bq/kg d.m.]
IAEA Unc
[Bq/kg d.m.]
Lab Value
[Bq/kg d.m.]
Lab Unc
[Bq/kg d.m.]
Lab Unc
%
Rel. Bias
%
z-Score u-Test Ratio
Lab/IAEA
A1 A2 Trueness P(%) Precision Final Score
Mn-54 48 0.98 49.9 0.7 1.40 3.96 0.40 1.58 1.04 1.90 3.11 A 2.48 A A
Co-60 56.1 1.37 59.8 0.8 1.34 6.60 0.66 2.33 1.07 3.70 4.09 A 2.78 A A
Zn-65 77.6 2.54 80.9 1.4 1.73 4.25 0.43 1.14 1.04 3.30 7.48 A 3.70 A A
Cd-109 177.6 8.4 202 5 2.48 13.74 1.37 2.50 1.14 24.40 25.22 A 5.34 A A
Cs-134 64.2 1.87 69.2 0.8 1.16 7.79 0.78 2.46 1.08 5.00 5.25 A 3.13 A A
Cs-137 52.6 1.08 55.7 0.8 1.44 5.89 0.59 2.31 1.06 3.10 3.47 A 2.51 A A
Pb-210 259.5 12.53 247 10 4.05 -4.82 -0.48 -0.78 0.95 12.50 41.36 A 6.30 A A
Am-241 96.6 2.78 95.3 2.1 2.20 -1.35 -0.13 -0.37 0.99 1.30 8.99 A 3.62 A A
Evaluation on Sample No. 2, Grass
Analyte IAEA Value
[Bq/kg d.m.]
IAEA Unc
[Bq/kg d.m.]
Lab Value
[Bq/kg d.m.]
Lab Unc
[Bq/kg d.m.]
Lab Unc
%
Rel. Bias
%
z-Score u-Test Ratio
Lab/IAEA
A1 A2 Trueness P(%) Precision Final Score
K-40 1059 28 1049 25 2.38 -0.94 -0.09 -0.27 0.99 10.00 96.84 A 3.56 A A
Cs-137 11320 185 11504 100 0.87 1.63 0.16 0.87 1.02 184.00 542.57 A 1.85 A A
Evaluation on Sample No. 3, Water
Analyte IAEA Value
[Bq/kg]
IAEA Unc
[Bq/kg]
Lab Value
[Bq/kg]
Lab Unc
[Bq/kg]
Lab Unc
%
Rel. Bias
%
z-Score u-Test Ratio
Lab/IAEA
A1 A2 Trueness P(%) Precision Final Score
Mn-54 4.89 0.017 4.77 0.12 2.52 -2.45 -0.25 -0.99 0.98 0.12 0.31 A 2.54 A A
Co-60 5.8 0.04 5.87 0.11 1.87 1.21 0.12 0.60 1.01 0.07 0.30 A 2.00 A A
Zn-65 7.27 0.075 7.33 0.24 3.27 0.83 0.08 0.24 1.01 0.06 0.65 A 3.43 A A
Cd-109 19.62 0.1 22.1 1 4.52 12.64 1.26 2.47 1.13 2.48 2.59 A 4.55 A A
Cs-134 13.03 0.1 13.14 0.15 1.14 0.84 0.08 0.61 1.01 0.11 0.47 A 1.38 A A
Cs-137 16.72 0.08 16.35 0.21 1.28 -2.21 -0.22 -1.65 0.98 0.37 0.58 A 1.37 A A
Pb-210 9.55 0.15 10.1 1 9.90 5.76 0.58 0.54 1.06 0.55 2.61 A 10.02 A A
Am-241 3.66 0.023 3.44 0.12 3.49 -6.01 -0.60 -1.80 0.94 0.22 0.32 A 3.54 A A
Appendix C, Page 1

The IAEA-CU-2006-04 ALMERA open proficiency test on the determination of gamma emitting radionuclides
Laboratory No. 292, RISOE NATIONAL LABORATORY, ROSKILDE, DENMARK
Samples received on 2006-06-20, results submitted on 2006-06-23
Evaluation on Sample No. 1, Soil Reference Date: 01-June-2006
Analyte IAEA Value
[Bq/kg d.m.]
IAEA Unc
[Bq/kg d.m.]
Lab Value
[Bq/kg d.m.]
Lab Unc
[Bq/kg d.m.]
Lab Unc
%
Rel. Bias
%
z-Score u-Test Ratio
Lab/IAEA
A1 A2 Trueness P(%) Precision Final Score
Mn-54 48 0.98 50.2 5 9.96 4.58 0.46 0.43 1.05 2.20 13.15 A 10.17 A A
Co-60 56.1 1.37 57.7 5.8 10.05 2.85 0.29 0.27 1.03 1.60 15.38 A 10.34 A A
Zn-65 77.6 2.54 77.3 7.7 9.96 -0.39 -0.04 -0.04 1.00 0.30 20.92 A 10.49 A A
Cd-109 177.6 8.4 276 28 10.14 55.41 5.54 3.37 1.55 98.40 75.42 N 11.19 A N
Cs-134 64.2 1.87 67.4 3.5 5.19 4.98 0.50 0.81 1.05 3.20 10.24 A 5.95 A A
Cs-137 52.6 1.08 51.9 2.8 5.39 -1.33 -0.13 -0.23 0.99 0.70 7.74 A 5.77 A A
Pb-210 259.5 12.53 237 24 10.13 -8.67 -0.87 -0.83 0.91 22.50 69.85 A 11.22 A A
Am-241 96.6 2.78 92.3 9.2 9.97 -4.45 -0.45 -0.45 0.96 4.30 24.80 A 10.37 A A
Evaluation on Sample No. 2, Grass
Analyte IAEA Value
[Bq/kg d.m.]
IAEA Unc
[Bq/kg d.m.]
Lab Value
[Bq/kg d.m.]
Lab Unc
[Bq/kg d.m.]
Lab Unc
%
Rel. Bias
%
z-Score u-Test Ratio
Lab/IAEA
A1 A2 Trueness P(%) Precision Final Score
K-40 1059 28 1155 116 10.04 9.07 0.91 0.80 1.09 96.00 307.88 A 10.39 A A
Cs-137 11320 185 11235 562 5.00 -0.75 -0.08 -0.14 0.99 85.00 1526.50 A 5.26 A A
Evaluation on Sample No. 3, Water
Analyte IAEA Value
[Bq/kg]
IAEA Unc
[Bq/kg]
Lab Value
[Bq/kg]
Lab Unc
[Bq/kg]
Lab Unc
%
Rel. Bias
%
z-Score u-Test Ratio
Lab/IAEA
A1 A2 Trueness P(%) Precision Final Score
Mn-54 4.89 0.017 4.96 0.56 11.29 1.43 0.14 0.12 1.01 0.07 1.45 A 11.30 A A
Co-60 5.8 0.04 6 0.64 10.67 3.45 0.34 0.31 1.03 0.20 1.65 A 10.69 A A
Zn-65 7.27 0.075 6.89 0.88 12.77 -5.23 -0.52 -0.43 0.95 0.38 2.28 A 12.81 A A
Cd-109 19.62 0.1 24.8 3.4 13.71 26.40 2.64 1.52 1.26 5.18 8.78 A 13.72 A A
Cs-134 13.03 0.1 13.2 0.71 5.38 1.30 0.13 0.24 1.01 0.17 1.85 A 5.43 A A
Cs-137 16.72 0.08 16.8 0.91 5.42 0.48 0.05 0.09 1.00 0.08 2.36 A 5.44 A A
Pb-210 9.55 0.15 8.78 1.73 19.70 -8.06 -0.81 -0.44 0.92 0.77 4.48 A 19.77 A A
Am-241 3.66 0.023 4.32 0.5 11.57 18.03 1.80 1.32 1.18 0.66 1.29 A 11.59 A A
Appendix C, Page 2

The IAEA-CU-2006-04 ALMERA open proficiency test on the determination of gamma emitting radionuclides
Laboratory No. 294, STUDIECENTRUM VOOR KERNENERGIE, MOL, BELGIUM
Samples received on 2006-06-21, results submitted on 2006-06-23
Evaluation on Sample No. 1, Soil Reference Date: 01-June-2006
Analyte IAEA Value
[Bq/kg d.m.]
IAEA Unc
[Bq/kg d.m.]
Lab Value
[Bq/kg d.m.]
Lab Unc
[Bq/kg d.m.]
Lab Unc
%
Rel. Bias
%
z-Score u-Test Ratio
Lab/IAEA
A1 A2 Trueness P(%) Precision Final Score
Mn-54 48 0.98 51 4 7.84 6.25 0.62 0.73 1.06 3.00 10.63 A 8.10 A A
Co-60 56.1 1.37 63 5 7.94 12.30 1.23 1.33 1.12 6.90 13.38 A 8.30 A A
Zn-65 77.6 2.54 79 6 7.59 1.80 0.18 0.21 1.02 1.40 16.81 A 8.27 A A
Cd-109 177.6 8.4 268 35 13.06 50.90 5.09 2.51 1.51 90.40 92.86 A 13.89 A A
Cs-134 64.2 1.87 68 5 7.35 5.92 0.59 0.71 1.06 3.80 13.77 A 7.91 A A
Cs-137 52.6 1.08 55 4 7.27 4.56 0.46 0.58 1.05 2.40 10.69 A 7.56 A A
Pb-210 259.5 12.53 127 40 31.50 -51.06 -5.11 -3.16 0.49 132.50 108.14 N 31.86 A N
Am-241 96.6 2.78 84 25 29.76 -13.04 -1.30 -0.50 0.87 12.60 64.90 A 29.90 A A
Evaluation on Sample No. 2, Grass
Analyte IAEA Value
[Bq/kg d.m.]
IAEA Unc
[Bq/kg d.m.]
Lab Value
[Bq/kg d.m.]
Lab Unc
[Bq/kg d.m.]
Lab Unc
%
Rel. Bias
%
z-Score u-Test Ratio
Lab/IAEA
A1 A2 Trueness P(%) Precision Final Score
K-40 1059 28 1090 110 10.09 2.93 0.29 0.27 1.03 31.00 292.85 A 10.43 A A
Cs-137 11320 185 11800 1000 8.47 4.24 0.42 0.47 1.04 480.00 2623.78 A 8.63 A A
Evaluation on Sample No. 3, Water
Analyte IAEA Value
[Bq/kg]
IAEA Unc
[Bq/kg]
Lab Value
[Bq/kg]
Lab Unc
[Bq/kg]
Lab Unc
%
Rel. Bias
%
z-Score u-Test Ratio
Lab/IAEA
A1 A2 Trueness P(%) Precision Final Score
Mn-54 4.89 0.017 4.1 0.4 9.76 -16.16 -1.62 -1.97 0.84 0.79 1.03 A 9.76 A A
Co-60 5.8 0.04 5.2 0.6 11.54 -10.34 -1.03 -1.00 0.90 0.60 1.55 A 11.56 A A
Zn-65 7.27 0.075 8 0.9 11.25 10.04 1.00 0.81 1.10 0.73 2.33 A 11.30 A A
Cd-109 19.62 0.1 19.2 3.3 17.19 -2.14 -0.21 -0.13 0.98 0.42 8.52 A 17.20 A A
Cs-134 13.03 0.1 12.3 1.1 8.94 -5.60 -0.56 -0.66 0.94 0.73 2.85 A 8.98 A A
Cs-137 16.72 0.08 16.5 1.5 9.09 -1.32 -0.13 -0.15 0.99 0.22 3.88 A 9.10 A A
Pb-210 9.55 0.15 22 20 90.91 130.37 13.04 0.62 2.30 12.45 51.60 A 90.92 N N
Am-241 3.66 0.023 3.1 0.6 19.35 -15.30 -1.53 -0.93 0.85 0.56 1.55 A 19.37 A A
Appendix C, Page 3

The IAEA-CU-2006-04 ALMERA open proficiency test on the determination of gamma emitting radionuclides
Laboratory No. 296, CENTRE FOR ENVIRONMENT, ISHERIES AND AQUACULTURE SCIENCE, SUFFOLK, UNITED KINGDOM
Samples received on 2006-06-22, results submitted on 2006-06-26
Evaluation on Sample No. 1, Soil Reference Date: 01-June-2006
Analyte IAEA Value
[Bq/kg d.m.]
IAEA Unc
[Bq/kg d.m.]
Lab Value
[Bq/kg d.m.]
Lab Unc
[Bq/kg d.m.]
Lab Unc
%
Rel. Bias
%
z-Score u-Test Ratio
Lab/IAEA
A1 A2 Trueness P(%) Precision Final Score
Mn-54 48 0.98 52.62 3.02 5.74 9.62 0.96 1.46 1.10 4.62 8.19 A 6.09 A A
Co-60 56.1 1.37 57.23 2.84 4.96 2.01 0.20 0.36 1.02 1.13 8.14 A 5.53 A A
Zn-65 77.6 2.54 87.64 4.95 5.65 12.94 1.29 1.80 1.13 10.04 14.35 A 6.53 A A
Cd-109 177.6 8.4 281.27 25.97 9.23 58.37 5.84 3.80 1.58 103.67 70.42 N 10.37 A N
Cs-134 64.2 1.87 65.42 3.97 6.07 1.90 0.19 0.28 1.02 1.22 11.32 A 6.73 A A
Cs-137 52.6 1.08 53.85 2.82 5.24 2.38 0.24 0.41 1.02 1.25 7.79 A 5.62 A A
Pb-210 259.5 12.53
Am-241 96.6 2.78 90.33 5.13 5.68 -6.49 -0.65 -1.07 0.94 6.27 15.05 A 6.37 A A
Evaluation on Sample No. 2, Grass
Analyte IAEA Value
[Bq/kg d.m.]
IAEA Unc
[Bq/kg d.m.]
Lab Value
[Bq/kg d.m.]
Lab Unc
[Bq/kg d.m.]
Lab Unc
%
Rel. Bias
%
z-Score u-Test Ratio
Lab/IAEA
A1 A2 Trueness P(%) Precision Final Score
K-40 1059 28 942.42 40.39 4.29 -11.01 -1.10 -2.37 0.89 116.58 126.80 A 5.04 A A
Cs-137 11320 185 10330 437 4.23 -8.75 -0.87 -2.09 0.91 990.00 1224.33 A 4.54 A A
Evaluation on Sample No. 3, Water
Analyte IAEA Value
[Bq/kg]
IAEA Unc
[Bq/kg]
Lab Value
[Bq/kg]
Lab Unc
[Bq/kg]
Lab Unc
%
Rel. Bias
%
z-Score u-Test Ratio
Lab/IAEA
A1 A2 Trueness P(%) Precision Final Score
Mn-54 4.89 0.017 5.16 0.344 6.67 5.52 0.55 0.78 1.06 0.27 0.89 A 6.68 A A
Co-60 5.8 0.04 5.59 0.336 6.01 -3.62 -0.36 -0.62 0.96 0.21 0.87 A 6.05 A A
Zn-65 7.27 0.075 7.9 0.646 8.18 8.67 0.87 0.97 1.09 0.63 1.68 A 8.24 A A
Cd-109 19.62 0.1 22.25 2.897 13.02 13.40 1.34 0.91 1.13 2.63 7.48 A 13.03 A A
Cs-134 13.03 0.1 13.42 0.793 5.91 2.99 0.30 0.49 1.03 0.39 2.06 A 5.96 A A
Cs-137 16.72 0.08 16.7 0.805 4.82 -0.12 -0.01 -0.02 1.00 0.02 2.09 A 4.84 A A
Pb-210 9.55 0.15
Am-241 3.66 0.023 3.83 0.344 8.98 4.64 0.46 0.49 1.05 0.17 0.89 A 9.00 A A
Appendix C, Page 4

The IAEA-CU-2006-04 ALMERA open proficiency test on the determination of gamma emitting radionuclides
Laboratory No. 297, AUSTRALIAN RADIATION PROTECTION AND NUCLEAR SAFETY AGENCY, YALLAMBIE, AUSTRALIA
Samples received on 2006-06-22, results submitted on 2006-06-23
Evaluation on Sample No. 1, Soil Reference Date: 01-June-2006
Analyte IAEA Value
[Bq/kg d.m.]
IAEA Unc
[Bq/kg d.m.]
Lab Value
[Bq/kg d.m.]
Lab Unc
[Bq/kg d.m.]
Lab Unc
%
Rel. Bias
%
z-Score u-Test Ratio
Lab/IAEA
A1 A2 Trueness P(%) Precision Final Score
Mn-54 48 0.98 47.1 2.4 5.10 -1.87 -0.19 -0.35 0.98 0.90 6.69 A 5.49 A A
Co-60 56.1 1.37 54.3 6.2 11.42 -3.21 -0.32 -0.28 0.97 1.80 16.38 A 11.68 A A
Zn-65 77.6 2.54 75.9 4.2 5.53 -2.19 -0.22 -0.35 0.98 1.70 12.66 A 6.43 A A
Cd-109 177.6 8.4 278 17 6.12 56.53 5.65 5.29 1.57 100.40 48.92 N 7.73 A N
Cs-134 64.2 1.87 61.5 6.9 11.22 -4.21 -0.42 -0.38 0.96 2.70 18.44 A 11.59 A A
Cs-137 52.6 1.08 52.5 2.7 5.14 -0.19 -0.02 -0.03 1.00 0.10 7.50 A 5.54 A A
Pb-210 259.5 12.53 242 16 6.61 -6.74 -0.67 -0.86 0.93 17.50 52.43 A 8.19 A A
Am-241 96.6 2.78 85.2 4.6 5.40 -11.80 -1.18 -2.12 0.88 11.40 13.87 A 6.12 A A
Evaluation on Sample No. 2, Grass
Analyte IAEA Value
[Bq/kg d.m.]
IAEA Unc
[Bq/kg d.m.]
Lab Value
[Bq/kg d.m.]
Lab Unc
[Bq/kg d.m.]
Lab Unc
%
Rel. Bias
%
z-Score u-Test Ratio
Lab/IAEA
A1 A2 Trueness P(%) Precision Final Score
K-40 1059 28 859 50 5.82 -18.89 -1.89 -3.49 0.81 200.00 147.85 N 6.39 A W
Cs-137 11320 185 9627 498 5.17 -14.96 -1.50 -3.19 0.85 1693.00 1370.63 N 5.42 A W
Evaluation on Sample No. 3, Water
Analyte IAEA Value
[Bq/kg]
IAEA Unc
[Bq/kg]
Lab Value
[Bq/kg]
Lab Unc
[Bq/kg]
Lab Unc
%
Rel. Bias
%
z-Score u-Test Ratio
Lab/IAEA
A1 A2 Trueness P(%) Precision Final Score
Mn-54 4.89 0.017 4.65 0.27 5.81 -4.91 -0.49 -0.89 0.95 0.24 0.70 A 5.82 A A
Co-60 5.8 0.04 5.47 0.62 11.33 -5.69 -0.57 -0.53 0.94 0.33 1.60 A 11.36 A A
Zn-65 7.27 0.075 6.4 0.42 6.56 -11.97 -1.20 -2.04 0.88 0.87 1.10 A 6.64 A A
Cd-109 19.62 0.1 18.9 1.9 10.05 -3.67 -0.37 -0.38 0.96 0.72 4.91 A 10.07 A A
Cs-134 13.03 0.1 12 1.4 11.67 -7.90 -0.79 -0.73 0.92 1.03 3.62 A 11.69 A A
Cs-137 16.72 0.08 16.78 0.87 5.18 0.36 0.04 0.07 1.00 0.06 2.25 A 5.21 A A
Pb-210 9.55 0.15 7.96 0.85 10.68 -16.65 -1.66 -1.84 0.83 1.59 2.23 A 10.79 A A
Am-241 3.66 0.023 3.71 0.26 7.01 1.37 0.14 0.19 1.01 0.05 0.67 A 7.04 A A
Appendix C, Page 5

The IAEA-CU-2006-04 ALMERA open proficiency test on the determination of gamma emitting radionuclides
Laboratory No. 298, LGC LIMITED, TEDDINGTON, UNITED KINGDOM
Samples received on 2006-06-21, results submitted on 2006-06-22
Evaluation on Sample No. 1, Soil Reference Date: 01-June-2006
Analyte IAEA Value
[Bq/kg d.m.]
IAEA Unc
[Bq/kg d.m.]
Lab Value
[Bq/kg d.m.]
Lab Unc
[Bq/kg d.m.]
Lab Unc
%
Rel. Bias
%
z-Score u-Test Ratio
Lab/IAEA
A1 A2 Trueness P(%) Precision Final Score
Mn-54 48 0.98 52.6 2.6 4.94 9.58 0.96 1.66 1.10 4.60 7.17 A 5.35 A A
Co-60 56.1 1.37 58.1 2.8 4.82 3.57 0.36 0.64 1.04 2.00 8.04 A 5.40 A A
Zn-65 77.6 2.54 85.5 4.2 4.91 10.18 1.02 1.61 1.10 7.90 12.66 A 5.90 A A
Cd-109 177.6 8.4 198.9 11.6 5.83 11.99 1.20 1.49 1.12 21.30 36.95 A 7.51 A A
Cs-134 64.2 1.87 60.8 2.9 4.77 -5.30 -0.53 -0.99 0.95 3.40 8.90 A 5.59 A A
Cs-137 52.6 1.08 56.7 2.7 4.76 7.79 0.78 1.41 1.08 4.10 7.50 A 5.19 A A
Pb-210 259.5 12.53
Am-241 96.6 2.78 95.9 5.6 5.84 -0.72 -0.07 -0.11 0.99 0.70 16.13 A 6.51 A A
Evaluation on Sample No. 2, Grass
Analyte IAEA Value
[Bq/kg d.m.]
IAEA Unc
[Bq/kg d.m.]
Lab Value
[Bq/kg d.m.]
Lab Unc
[Bq/kg d.m.]
Lab Unc
%
Rel. Bias
%
z-Score u-Test Ratio
Lab/IAEA
A1 A2 Trueness P(%) Precision Final Score
K-40 1059 28 1186 72 6.07 11.99 1.20 1.64 1.12 127.00 199.31 A 6.62 A A
Cs-137 11320 185 12441 706 5.67 9.90 0.99 1.54 1.10 1121.00 1882.98 A 5.91 A A
Evaluation on Sample No. 3, Water
Analyte IAEA Value
[Bq/kg]
IAEA Unc
[Bq/kg]
Lab Value
[Bq/kg]
Lab Unc
[Bq/kg]
Lab Unc
%
Rel. Bias
%
z-Score u-Test Ratio
Lab/IAEA
A1 A2 Trueness P(%) Precision Final Score
Mn-54 4.89 0.017 4.96 0.3 6.05 1.43 0.14 0.23 1.01 0.07 0.78 A 6.06 A A
Co-60 5.8 0.04 6.23 0.39 6.26 7.41 0.74 1.10 1.07 0.43 1.01 A 6.30 A A
Zn-65 7.27 0.075 7.93 0.52 6.56 9.08 0.91 1.26 1.09 0.66 1.36 A 6.64 A A
Cd-109 19.62 0.1 31.5 3.3 10.48 60.55 6.06 3.60 1.61 11.88 8.52 N 10.49 A N
Cs-134 13.03 0.1 12.2 0.6 4.92 -6.37 -0.64 -1.36 0.94 0.83 1.57 A 4.98 A A
Cs-137 16.72 0.08 18 0.9 5.00 7.66 0.77 1.42 1.08 1.28 2.33 A 5.02 A A
Pb-210 9.55 0.15
Am-241 3.66 0.023 4.29 1.07 24.94 17.21 1.72 0.59 1.17 0.63 2.76 A 24.95 A A
Appendix C, Page 6

The IAEA-CU-2006-04 ALMERA open proficiency test on the determination of gamma emitting radionuclides
Laboratory No. 300, NATIONAL RADIATION LABORATORY, CHRISTCHURCH, NEW ZEALAND
Samples received on 2006-06-22, results submitted on 2006-06-27
Evaluation on Sample No. 1, Soil Reference Date: 01-June-2006
Analyte IAEA Value
[Bq/kg d.m.]
IAEA Unc
[Bq/kg d.m.]
Lab Value
[Bq/kg d.m.]
Lab Unc
[Bq/kg d.m.]
Lab Unc
%
Rel. Bias
%
z-Score u-Test Ratio
Lab/IAEA
A1 A2 Trueness P(%) Precision Final Score
Mn-54 48 0.98 47.1 2.4 5.10 -1.87 -0.19 -0.35 0.98 0.90 6.69 A 5.49 A A
Co-60 56.1 1.37 55.6 2.9 5.22 -0.89 -0.09 -0.16 0.99 0.50 8.27 A 5.76 A A
Zn-65 77.6 2.54 73.8 5.2 7.05 -4.90 -0.49 -0.66 0.95 3.80 14.93 A 7.77 A A
Cd-109 177.6 8.4 166 10 6.02 -6.53 -0.65 -0.89 0.93 11.60 33.69 A 7.66 A A
Cs-134 64.2 1.87 58.3 2.8 4.80 -9.19 -0.92 -1.75 0.91 5.90 8.69 A 5.62 A A
Cs-137 52.6 1.08 50.3 2.8 5.57 -4.37 -0.44 -0.77 0.96 2.30 7.74 A 5.93 A A
Pb-210 259.5 12.53 247 15 6.07 -4.82 -0.48 -0.64 0.95 12.50 50.43 A 7.76 A A
Am-241 96.6 2.78 91.1 5 5.49 -5.69 -0.57 -0.96 0.94 5.50 14.76 A 6.20 A A
Evaluation on Sample No. 2, Grass
Analyte IAEA Value
[Bq/kg d.m.]
IAEA Unc
[Bq/kg d.m.]
Lab Value
[Bq/kg d.m.]
Lab Unc
[Bq/kg d.m.]
Lab Unc
%
Rel. Bias
%
z-Score u-Test Ratio
Lab/IAEA
A1 A2 Trueness P(%) Precision Final Score
K-40 1059 28 1161 88 7.58 9.63 0.96 1.10 1.10 102.00 238.26 A 8.03 A A
Cs-137 11320 185 12300 1000 8.13 8.66 0.87 0.96 1.09 980.00 2623.78 A 8.29 A A
Evaluation on Sample No. 3, Water
Analyte IAEA Value
[Bq/kg]
IAEA Unc
[Bq/kg]
Lab Value
[Bq/kg]
Lab Unc
[Bq/kg]
Lab Unc
%
Rel. Bias
%
z-Score u-Test Ratio
Lab/IAEA
A1 A2 Trueness P(%) Precision Final Score
Mn-54 4.89 0.017 5.05 0.26 5.15 3.27 0.33 0.61 1.03 0.16 0.67 A 5.16 A A
Co-60 5.8 0.04 6.04 0.34 5.63 4.14 0.41 0.70 1.04 0.24 0.88 A 5.67 A A
Zn-65 7.27 0.075 7.33 0.46 6.28 0.83 0.08 0.13 1.01 0.06 1.20 A 6.36 A A
Cd-109 19.62 0.1 19.6 1.7 8.67 -0.10 -0.01 -0.01 1.00 0.02 4.39 A 8.69 A A
Cs-134 13.03 0.1 12.47 0.44 3.53 -4.30 -0.43 -1.24 0.96 0.56 1.16 A 3.61 A A
Cs-137 16.72 0.08 16.95 0.84 4.96 1.38 0.14 0.27 1.01 0.23 2.18 A 4.98 A A
Pb-210 9.55 0.15 9.1 1.8 19.78 -4.71 -0.47 -0.25 0.95 0.45 4.66 A 19.84 A A
Am-241 3.66 0.023 3.72 0.23 6.18 1.64 0.16 0.26 1.02 0.06 0.60 A 6.21 A A
Appendix C, Page 7

The IAEA-CU-2006-04 ALMERA open proficiency test on the determination of gamma emitting radionuclides
Laboratory No. 303, INSTITUTE FOR ENERGY TECHNOLOGY, KJELLER, NORWAY
Samples received on 2006-06-20, results submitted on 2006-06-23
Evaluation on Sample No. 1, Soil Reference Date: 01-June-2006
Analyte IAEA Value
[Bq/kg d.m.]
IAEA Unc
[Bq/kg d.m.]
Lab Value
[Bq/kg d.m.]
Lab Unc
[Bq/kg d.m.]
Lab Unc
%
Rel. Bias
%
z-Score u-Test Ratio
Lab/IAEA
A1 A2 Trueness P(%) Precision Final Score
Mn-54 48 0.98 49.6 2.9 5.85 3.33 0.33 0.52 1.03 1.60 7.90 A 6.19 A A
Co-60 56.1 1.37 53.6 3.1 5.78 -4.46 -0.45 -0.74 0.96 2.50 8.74 A 6.28 A A
Zn-65 77.6 2.54 78.6 4.6 5.85 1.29 0.13 0.19 1.01 1.00 13.56 A 6.71 A A
Cd-109 177.6 8.4 197 12 6.09 10.92 1.09 1.32 1.11 19.40 37.79 A 7.71 A A
Cs-134 64.2 1.87 56.3 3.2 5.68 -12.31 -1.23 -2.13 0.88 7.90 9.56 A 6.39 A A
Cs-137 52.6 1.08 50.5 2.9 5.74 -3.99 -0.40 -0.68 0.96 2.10 7.98 A 6.10 A A
Pb-210 259.5 12.53 297 22 7.41 14.45 1.45 1.48 1.14 37.50 65.32 A 8.84 A A
Am-241 96.6 2.78 93.1 6.3 6.77 -3.62 -0.36 -0.51 0.96 3.50 17.77 A 7.35 A A
Evaluation on Sample No. 2, Grass
Analyte IAEA Value
[Bq/kg d.m.]
IAEA Unc
[Bq/kg d.m.]
Lab Value
[Bq/kg d.m.]
Lab Unc
[Bq/kg d.m.]
Lab Unc
%
Rel. Bias
%
z-Score u-Test Ratio
Lab/IAEA
A1 A2 Trueness P(%) Precision Final Score
K-40 1059 28 1108 69 6.23 4.63 0.46 0.66 1.05 49.00 192.12 A 6.77 A A
Cs-137 11320 185 11520 640 5.56 1.77 0.18 0.30 1.02 200.00 1718.80 A 5.79 A A
Evaluation on Sample No. 3, Water
Analyte IAEA Value
[Bq/kg]
IAEA Unc
[Bq/kg]
Lab Value
[Bq/kg]
Lab Unc
[Bq/kg]
Lab Unc
%
Rel. Bias
%
z-Score u-Test Ratio
Lab/IAEA
A1 A2 Trueness P(%) Precision Final Score
Mn-54 4.89 0.017 5.11 0.35 6.85 4.50 0.45 0.63 1.04 0.22 0.90 A 6.86 A A
Co-60 5.8 0.04 6.06 0.37 6.11 4.48 0.45 0.70 1.04 0.26 0.96 A 6.14 A A
Zn-65 7.27 0.075 7.04 0.53 7.53 -3.16 -0.32 -0.43 0.97 0.23 1.38 A 7.60 A A
Cd-109 19.62 0.1 26.1 2.8 10.73 33.03 3.30 2.31 1.33 6.48 7.23 A 10.74 A A
Cs-134 13.03 0.1 12.12 0.72 5.94 -6.98 -0.70 -1.25 0.93 0.91 1.88 A 5.99 A A
Cs-137 16.72 0.08 17.3 1.1 6.36 3.47 0.35 0.53 1.03 0.58 2.85 A 6.38 A A
Pb-210 9.55 0.15 8.3 2.3 27.71 -13.09 -1.31 -0.54 0.87 1.25 5.95 A 27.76 A A
Am-241 3.66 0.023 3.46 0.31 8.96 -5.46 -0.55 -0.64 0.95 0.20 0.80 A 8.98 A A
Appendix C, Page 8

The IAEA-CU-2006-04 ALMERA open proficiency test on the determination of gamma emitting radionuclides
Laboratory No. 304, NATIONAL FOOD INVESTIGATION INSTITUTE, BUDAPEST, HUNGARY
Samples received on 2006-06-27, results submitted on 2006-07-03
Evaluation on Sample No. 1, Soil Reference Date: 01-June-2006
Analyte IAEA Value
[Bq/kg d.m.]
IAEA Unc
[Bq/kg d.m.]
Lab Value
[Bq/kg d.m.]
Lab Unc
[Bq/kg d.m.]
Lab Unc
%
Rel. Bias
%
z-Score u-Test Ratio
Lab/IAEA
A1 A2 Trueness P(%) Precision Final Score
Mn-54 48 0.98 55.4609 2.3 4.15 15.54 1.55 2.98 1.16 7.46 6.45 N 4.62 A W
Co-60 56.1 1.37 58.3607 2.84 4.87 4.03 0.40 0.72 1.04 2.26 8.14 A 5.44 A A
Zn-65 77.6 2.54 78.2612 5.11 6.53 0.85 0.09 0.12 1.01 0.66 14.72 A 7.30 A A
Cd-109 177.6 8.4 234.9566 17.67 7.52 32.30 3.23 2.93 1.32 57.36 50.48 N 8.88 A N
Cs-134 64.2 1.87 64.1345 1.98 3.09 -0.10 -0.01 -0.02 1.00 0.07 7.03 A 4.24 A A
Cs-137 52.6 1.08 58.0216 3.52 6.07 10.31 1.03 1.47 1.10 5.42 9.50 A 6.40 A A
Pb-210 259.5 12.53 234.6695 19.69 8.39 -9.57 -0.96 -1.06 0.90 24.83 60.21 A 9.68 A A
Am-241 96.6 2.78 92.9088 5.71 6.15 -3.82 -0.38 -0.58 0.96 3.69 16.39 A 6.79 A A
Evaluation on Sample No. 2, Grass
Analyte IAEA Value
[Bq/kg d.m.]
IAEA Unc
[Bq/kg d.m.]
Lab Value
[Bq/kg d.m.]
Lab Unc
[Bq/kg d.m.]
Lab Unc
%
Rel. Bias
%
z-Score u-Test Ratio
Lab/IAEA
A1 A2 Trueness P(%) Precision Final Score
K-40 1059 28 1040.77 63.59 6.11 -1.72 -0.17 -0.26 0.98 18.23 179.26 A 6.66 A A
Cs-137 11320 185 11006 525 4.77 -2.77 -0.28 -0.56 0.97 314.00 1436.14 A 5.04 A A
Evaluation on Sample No. 3, Water
Analyte IAEA Value
[Bq/kg]
IAEA Unc
[Bq/kg]
Lab Value
[Bq/kg]
Lab Unc
[Bq/kg]
Lab Unc
%
Rel. Bias
%
z-Score u-Test Ratio
Lab/IAEA
A1 A2 Trueness P(%) Precision Final Score
Mn-54 4.89 0.017 4.834 0.19 3.93 -1.15 -0.11 -0.29 0.99 0.06 0.49 A 3.95 A A
Co-60 5.8 0.04 5.894 0.18 3.05 1.62 0.16 0.51 1.02 0.09 0.48 A 3.13 A A
Zn-65 7.27 0.075 7.39 0.33 4.47 1.65 0.17 0.35 1.02 0.12 0.87 A 4.58 A A
Cd-109 19.62 0.1 17.83 1.08 6.06 -9.12 -0.91 -1.65 0.91 1.79 2.80 A 6.08 A A
Cs-134 13.03 0.1 11.83 0.32 2.70 -9.21 -0.92 -3.58 0.91 1.20 0.86 N 2.81 A W
Cs-137 16.72 0.08 16.9 0.55 3.25 1.08 0.11 0.32 1.01 0.18 1.43 A 3.29 A A
Pb-210 9.55 0.15 7.878 0.94 11.93 -17.51 -1.75 -1.76 0.82 1.67 2.46 A 12.03 A A
Am-241 3.66 0.023 4.009 0.17 4.24 9.54 0.95 2.03 1.10 0.35 0.44 A 4.29 A A
Appendix C, Page 9

The IAEA-CU-2006-04 ALMERA open proficiency test on the determination of gamma emitting radionuclides
Laboratory No. 305, LABORATORIO AMBIENTALE CENTRALE ELETTRONUCLEARE DI TRINO, TRINO, ITALY
Samples received on 2006-06-22, results submitted on 2006-06-23
Evaluation on Sample No. 1, Soil Reference Date: 01-June-2006
Analyte IAEA Value
[Bq/kg d.m.]
IAEA Unc
[Bq/kg d.m.]
Mn-54 48 0.98

The IAEA-CU-2006-04 ALMERA open proficiency test on the determination of gamma emitting radionuclides
Laboratory No. 306, INSTITUTE JOZEF STEFAN, LJUBLJANA, SLOVENIA
Samples received on 2006-06-21, results submitted on 2006-06-22
Evaluation on Sample No. 1, Soil Reference Date: 01-June-2006
Analyte IAEA Value
[Bq/kg d.m.]
IAEA Unc
[Bq/kg d.m.]
Lab Value
[Bq/kg d.m.]
Lab Unc
[Bq/kg d.m.]
Lab Unc
%
Rel. Bias
%
z-Score u-Test Ratio
Lab/IAEA
A1 A2 Trueness P(%) Precision Final Score
Mn-54 48 0.98 49.7 1.5 3.02 3.54 0.35 0.95 1.04 1.70 4.62 A 3.64 A A
Co-60 56.1 1.37 58.2 1.8 3.09 3.74 0.37 0.93 1.04 2.10 5.84 A 3.94 A A
Zn-65 77.6 2.54 78 2.5 3.21 0.52 0.05 0.11 1.01 0.40 9.19 A 4.58 A A
Cd-109 177.6 8.4 128.4 9 7.01 -27.70 -2.77 -4.00 0.72 49.20 31.76 N 8.46 A N
Cs-134 64.2 1.87 67.4 1.7 2.52 4.98 0.50 1.27 1.05 3.20 6.52 A 3.85 A A
Cs-137 52.6 1.08 54.9 1.7 3.10 4.37 0.44 1.14 1.04 2.30 5.20 A 3.72 A A
Pb-210 259.5 12.53 220 50 22.73 -15.22 -1.52 -0.77 0.85 39.50 132.99 A 23.23 A A
Am-241 96.6 2.78 93.6 4.5 4.81 -3.11 -0.31 -0.57 0.97 3.00 13.65 A 5.60 A A
Evaluation on Sample No. 2, Grass
Analyte IAEA Value
[Bq/kg d.m.]
IAEA Unc
[Bq/kg d.m.]
Lab Value
[Bq/kg d.m.]
Lab Unc
[Bq/kg d.m.]
Lab Unc
%
Rel. Bias
%
z-Score u-Test Ratio
Lab/IAEA
A1 A2 Trueness P(%) Precision Final Score
K-40 1059 28 985 70 7.11 -6.99 -0.70 -0.98 0.93 74.00 194.51 A 7.58 A A
Cs-137 11320 185 10700 350 3.27 -5.48 -0.55 -1.57 0.95 620.00 1021.38 A 3.66 A A
Evaluation on Sample No. 3, Water
Analyte IAEA Value
[Bq/kg]
IAEA Unc
[Bq/kg]
Lab Value
[Bq/kg]
Lab Unc
[Bq/kg]
Lab Unc
%
Rel. Bias
%
z-Score u-Test Ratio
Lab/IAEA
A1 A2 Trueness P(%) Precision Final Score
Mn-54 4.89 0.017 4.9 0.3 6.12 0.20 0.02 0.03 1.00 0.01 0.78 A 6.13 A A
Co-60 5.8 0.04 6 0.2 3.33 3.45 0.34 0.98 1.03 0.20 0.53 A 3.40 A A
Zn-65 7.27 0.075 7.6 0.5 6.58 4.54 0.45 0.65 1.05 0.33 1.30 A 6.66 A A
Cd-109 19.62 0.1 23.2 0.9 3.88 18.25 1.82 3.95 1.18 3.58 2.34 N 3.91 A W
Cs-134 13.03 0.1 13.3 0.4 3.01 2.07 0.21 0.65 1.02 0.27 1.06 A 3.10 A A
Cs-137 16.72 0.08 18.1 0.7 3.87 8.25 0.83 1.96 1.08 1.38 1.82 A 3.90 A A
Pb-210 9.55 0.15 9.4 1.1 11.70 -1.57 -0.16 -0.14 0.98 0.15 2.86 A 11.81 A A
Am-241 3.66 0.023 3.7 0.2 5.41 1.09 0.11 0.20 1.01 0.04 0.52 A 5.44 A A
Appendix C, Page 11

The IAEA-CU-2006-04 ALMERA open proficiency test on the determination of gamma emitting radionuclides
Laboratory No. 307, NUCLEAR POWER PLANT MOCHOVCE, SLOVAK ELECTRIC, PLC., LEVICE, SLOVAK REPUBLIC
Samples received on 2006-06-20, results submitted on 2006-06-23
Evaluation on Sample No. 1, Soil Reference Date: 01-June-2006
Analyte IAEA Value
[Bq/kg d.m.]
IAEA Unc
[Bq/kg d.m.]
Lab Value
[Bq/kg d.m.]
Lab Unc
[Bq/kg d.m.]
Lab Unc
%
Rel. Bias
%
z-Score u-Test Ratio
Lab/IAEA
A1 A2 Trueness P(%) Precision Final Score
Mn-54 48 0.98 46.8 2.44 5.21 -2.50 -0.25 -0.46 0.98 1.20 6.78 A 5.60 A A
Co-60 56.1 1.37 53.9 2.74 5.08 -3.92 -0.39 -0.72 0.96 2.20 7.90 A 5.64 A A
Zn-65 77.6 2.54 72.9 3.84 5.27 -6.06 -0.61 -1.02 0.94 4.70 11.88 A 6.20 A A
Cd-109 177.6 8.4 123 9.53 7.75 -30.74 -3.07 -4.30 0.69 54.60 32.78 N 9.08 A N
Cs-134 64.2 1.87 62.1 3.1 4.99 -3.27 -0.33 -0.58 0.97 2.10 9.34 A 5.78 A A
Cs-137 52.6 1.08 52.5 2.72 5.18 -0.19 -0.02 -0.03 1.00 0.10 7.55 A 5.57 A A
Pb-210 259.5 12.53 31.4 1.72 5.48 -87.90 -8.79 -18.04 0.12 228.10 32.63 N 7.30 A N
Am-241 96.6 2.78 72.8 8.88 12.20 -24.64 -2.46 -2.56 0.75 23.80 24.01 A 12.53 A A
Evaluation on Sample No. 2, Grass
Analyte IAEA Value
[Bq/kg d.m.]
IAEA Unc
[Bq/kg d.m.]
Lab Value
[Bq/kg d.m.]
Lab Unc
[Bq/kg d.m.]
Lab Unc
%
Rel. Bias
%
z-Score u-Test Ratio
Lab/IAEA
A1 A2 Trueness P(%) Precision Final Score
K-40 1059 28 1040 48.9 4.70 -1.79 -0.18 -0.34 0.98 19.00 145.38 A 5.39 A A
Cs-137 11320 185 10900 457 4.19 -3.71 -0.37 -0.85 0.96 420.00 1272.01 A 4.50 A A
Evaluation on Sample No. 3, Water
Analyte IAEA Value
[Bq/kg]
IAEA Unc
[Bq/kg]
Lab Value
[Bq/kg]
Lab Unc
[Bq/kg]
Lab Unc
%
Rel. Bias
%
z-Score u-Test Ratio
Lab/IAEA
A1 A2 Trueness P(%) Precision Final Score
Mn-54 4.89 0.017 4.93 0.263 5.33 0.82 0.08 0.15 1.01 0.04 0.68 A 5.35 A A
Co-60 5.8 0.04 6.21 0.292 4.70 7.07 0.71 1.39 1.07 0.41 0.76 A 4.75 A A
Zn-65 7.27 0.075 7.26 0.41 5.65 -0.14 -0.01 -0.02 1.00 0.01 1.08 A 5.74 A A
Cd-109 19.62 0.1 19.4 2.72 14.02 -1.12 -0.11 -0.08 0.99 0.22 7.02 A 14.03 A A
Cs-134 13.03 0.1 13.4 0.584 4.36 2.84 0.28 0.62 1.03 0.37 1.53 A 4.43 A A
Cs-137 16.72 0.08 18.1 0.809 4.47 8.25 0.83 1.70 1.08 1.38 2.10 A 4.50 A A
Pb-210 9.55 0.15
Am-241 3.66 0.023 2.63 0.916 34.83 -28.14 -2.81 -1.12 0.72 1.03 2.36 A 34.83 N N
Appendix C, Page 12

The IAEA-CU-2006-04 ALMERA open proficiency test on the determination of gamma emitting radionuclides
Laboratory No. 308, MALAYSIAN INSTITUTE FOR NUCLEAR TECHNOLOGY RESEARCH, KAJANG, MALAYSIA
Samples received on 2006-06-23, results submitted on 2006-06-30
Evaluation on Sample No. 1, Soil Reference Date: 01-June-2006
Analyte IAEA Value
[Bq/kg d.m.]
IAEA Unc
[Bq/kg d.m.]
Lab Value
[Bq/kg d.m.]
Lab Unc
[Bq/kg d.m.]
Lab Unc
%
Rel. Bias
%
z-Score u-Test Ratio
Lab/IAEA
A1 A2 Trueness P(%) Precision Final Score
Mn-54 48 0.98 52.29 4.06 7.76 8.94 0.89 1.03 1.09 4.29 10.78 A 8.03 A A
Co-60 56.1 1.37 54.56 4.71 8.63 -2.75 -0.27 -0.31 0.97 1.54 12.66 A 8.97 A A
Zn-65 77.6 2.54 84.87 7.37 8.68 9.37 0.94 0.93 1.09 7.27 20.11 A 9.28 A A
Cd-109 177.6 8.4 209.27 14.65 7.00 17.83 1.78 1.88 1.18 31.67 43.57 A 8.45 A A
Cs-134 64.2 1.87 63.64 4.69 7.37 -0.87 -0.09 -0.11 0.99 0.56 13.03 A 7.92 A A
Cs-137 52.6 1.08 57.85 4.28 7.40 9.98 1.00 1.19 1.10 5.25 11.39 A 7.68 A A
Pb-210 259.5 12.53 154.14 9.91 6.43 -40.60 -4.06 -6.60 0.59 105.36 41.22 N 8.04 A N
Am-241 96.6 2.78 69.36 4.86 7.01 -28.20 -2.82 -4.87 0.72 27.24 14.45 N 7.57 A W
Evaluation on Sample No. 2, Grass
Analyte IAEA Value
[Bq/kg d.m.]
IAEA Unc
[Bq/kg d.m.]
Lab Value
[Bq/kg d.m.]
Lab Unc
[Bq/kg d.m.]
Lab Unc
%
Rel. Bias
%
z-Score u-Test Ratio
Lab/IAEA
A1 A2 Trueness P(%) Precision Final Score
K-40 1059 28 947.01 59.93 6.33 -10.58 -1.06 -1.69 0.89 111.99 170.66 A 6.86 A A
Cs-137 11320 185 11024 794.3 7.21 -2.61 -0.26 -0.36 0.97 296.00 2104.14 A 7.39 A A
Evaluation on Sample No. 3, Water
Analyte IAEA Value
[Bq/kg]
IAEA Unc
[Bq/kg]
Lab Value
[Bq/kg]
Lab Unc
[Bq/kg]
Lab Unc
%
Rel. Bias
%
z-Score u-Test Ratio
Lab/IAEA
A1 A2 Trueness P(%) Precision Final Score
Mn-54 4.89 0.017 5.02 0.42 8.37 2.66 0.27 0.31 1.03 0.13 1.08 A 8.37 A A
Co-60 5.8 0.04 5.33 0.47 8.82 -8.10 -0.81 -1.00 0.92 0.47 1.22 A 8.84 A A
Zn-65 7.27 0.075 7.31 0.69 9.44 0.55 0.06 0.06 1.01 0.04 1.79 A 9.50 A A
Cd-109 19.62 0.1 31.43 2.37 7.54 60.19 6.02 4.98 1.60 11.81 6.12 N 7.56 A N
Cs-134 13.03 0.1 11.78 0.87 7.39 -9.59 -0.96 -1.43 0.90 1.25 2.26 A 7.43 A A
Cs-137 16.72 0.08 16.01 1.15 7.18 -4.25 -0.42 -0.62 0.96 0.71 2.97 A 7.20 A A
Pb-210 9.55 0.15 6.16 0.36 5.84 -35.50 -3.55 -8.69 0.65 3.39 1.01 N 6.05 A N
Am-241 3.66 0.023 3.65 0.27 7.40 -0.27 -0.03 -0.04 1.00 0.01 0.70 A 7.42 A A
Appendix C, Page 13

The IAEA-CU-2006-04 ALMERA open proficiency test on the determination of gamma emitting radionuclides
Laboratory No. 310, NUCLEAR POWER PLANT BOHUNICE, JASLOVSKE BOHUNICE, SLOVAK REPUBLIC
Samples received on 2006-06-20, results submitted on 2006-06-23
Evaluation on Sample No. 1, Soil Reference Date: 01-June-2006
Analyte IAEA Value
[Bq/kg d.m.]
IAEA Unc
[Bq/kg d.m.]
Lab Value
[Bq/kg d.m.]
Lab Unc
[Bq/kg d.m.]
Lab Unc
%
Rel. Bias
%
z-Score u-Test Ratio
Lab/IAEA
A1 A2 Trueness P(%) Precision Final Score
Mn-54 48 0.98 51.9 3.2 6.17 8.12 0.81 1.17 1.08 3.90 8.63 A 6.49 A A
Co-60 56.1 1.37 60.6 3.4 5.61 8.02 0.80 1.23 1.08 4.50 9.46 A 6.12 A A
Zn-65 77.6 2.54 86.1 5.9 6.85 10.95 1.10 1.32 1.11 8.50 16.57 A 7.59 A A
Cd-109 177.6 8.4 113 14 12.39 -36.37 -3.64 -3.96 0.64 64.60 42.12 N 13.26 A N
Cs-134 64.2 1.87 63.6 3.6 5.66 -0.93 -0.09 -0.15 0.99 0.60 10.47 A 6.37 A A
Cs-137 52.6 1.08 58.4 3.7 6.34 11.03 1.10 1.50 1.11 5.80 9.94 A 6.66 A A
Pb-210 259.5 12.53 41.2 2.7 6.55 -84.12 -8.41 -17.03 0.16 218.30 33.07 N 8.14 A N
Am-241 96.6 2.78 90.2 7.1 7.87 -6.63 -0.66 -0.84 0.93 6.40 19.67 A 8.38 A A
Evaluation on Sample No. 2, Grass
Analyte IAEA Value
[Bq/kg d.m.]
IAEA Unc
[Bq/kg d.m.]
Lab Value
[Bq/kg d.m.]
Lab Unc
[Bq/kg d.m.]
Lab Unc
%
Rel. Bias
%
z-Score u-Test Ratio
Lab/IAEA
A1 A2 Trueness P(%) Precision Final Score
K-40 1059 28 1155 73 6.32 9.07 0.91 1.23 1.09 96.00 201.72 A 6.85 A A
Cs-137 11320 185 11576 702 6.06 2.26 0.23 0.35 1.02 256.00 1873.00 A 6.28 A A
Evaluation on Sample No. 3, Water
Analyte IAEA Value
[Bq/kg]
IAEA Unc
[Bq/kg]
Lab Value
[Bq/kg]
Lab Unc
[Bq/kg]
Lab Unc
%
Rel. Bias
%
z-Score u-Test Ratio
Lab/IAEA
A1 A2 Trueness P(%) Precision Final Score
Mn-54 4.89 0.017 5.18 0.37 7.14 5.93 0.59 0.78 1.06 0.29 0.96 A 7.15 A A
Co-60 5.8 0.04 5.6 0.33 5.89 -3.45 -0.34 -0.60 0.97 0.20 0.86 A 5.93 A A
Zn-65 7.27 0.075 7.41 0.83 11.20 1.93 0.19 0.17 1.02 0.14 2.15 A 11.25 A A
Cd-109 19.62 0.1 12.2 3.2 26.23 -37.82 -3.78 -2.32 0.62 7.42 8.26 A 26.23 N N
Cs-134 13.03 0.1 12.2 0.7 5.74 -6.37 -0.64 -1.17 0.94 0.83 1.82 A 5.79 A A
Cs-137 16.72 0.08 17.7 1 5.65 5.86 0.59 0.98 1.06 0.98 2.59 A 5.67 A A
Pb-210 9.55 0.15 4.01 0.45 11.22 -58.01 -5.80 -11.68 0.42 5.54 1.22 N 11.33 A N
Am-241 3.66 0.023 2.8 1.1 39.29 -23.50 -2.35 -0.78 0.77 0.86 2.84 A 39.29 N W
Appendix C, Page 14

The IAEA-CU-2006-04 ALMERA open proficiency test on the determination of gamma emitting radionuclides
Laboratory No. 311, ISTITUTO DI RADIOPROTEZIONE, ENEA RESEARCH CENTRE, SALUGGIA, ITALY
Samples received on 2006-06-23, results submitted on 2006-06-23
Evaluation on Sample No. 1, Soil Reference Date: 01-June-2006
Analyte IAEA Value
[Bq/kg d.m.]
IAEA Unc
[Bq/kg d.m.]
Lab Value
[Bq/kg d.m.]
Lab Unc
[Bq/kg d.m.]
Lab Unc
%
Rel. Bias
%
z-Score u-Test Ratio
Lab/IAEA
A1 A2 Trueness P(%) Precision Final Score
Mn-54 48 0.98 45.7 5 10.94 -4.79 -0.48 -0.45 0.95 2.30 13.15 A 11.13 A A
Co-60 56.1 1.37 58.7 6.6 11.24 4.63 0.46 0.39 1.05 2.60 17.39 A 11.51 A A
Zn-65 77.6 2.54 73.3 9.1 12.41 -5.54 -0.55 -0.46 0.94 4.30 24.38 A 12.84 A A
Cd-109 177.6 8.4 258 39 15.12 45.27 4.53 2.02 1.45 80.40 102.93 A 15.84 A A
Cs-134 64.2 1.87 66.5 7.2 10.83 3.58 0.36 0.31 1.04 2.30 19.19 A 11.21 A A
Cs-137 52.6 1.08 51.5 5.5 10.68 -2.09 -0.21 -0.20 0.98 1.10 14.46 A 10.88 A A
Pb-210 259.5 12.53 191 28 14.66 -26.40 -2.64 -2.23 0.74 68.50 79.14 A 15.43 A A
Am-241 96.6 2.78 81.6 9.2 11.27 -15.53 -1.55 -1.56 0.84 15.00 24.80 A 11.64 A A
Evaluation on Sample No. 2, Grass
Analyte IAEA Value
[Bq/kg d.m.]
IAEA Unc
[Bq/kg d.m.]
Lab Value
[Bq/kg d.m.]
Lab Unc
[Bq/kg d.m.]
Lab Unc
%
Rel. Bias
%
z-Score u-Test Ratio
Lab/IAEA
A1 A2 Trueness P(%) Precision Final Score
K-40 1059 28 1060 160 15.09 0.09 0.01 0.01 1.00 1.00 419.07 A 15.32 A A
Cs-137 11320 185 11500 1400 12.17 1.59 0.16 0.13 1.02 180.00 3643.40 A 12.28 A A
Evaluation on Sample No. 3, Water
Analyte IAEA Value
[Bq/kg]
IAEA Unc
[Bq/kg]
Lab Value
[Bq/kg]
Lab Unc
[Bq/kg]
Lab Unc
%
Rel. Bias
%
z-Score u-Test Ratio
Lab/IAEA
A1 A2 Trueness P(%) Precision Final Score
Mn-54 4.89 0.017 4.4 0.27 6.14 -10.02 -1.00 -1.81 0.90 0.49 0.70 A 6.15 A A
Co-60 5.8 0.04 5.83 0.35 6.00 0.52 0.05 0.09 1.01 0.03 0.91 A 6.04 A A
Zn-65 7.27 0.075 6.6 0.8 12.12 -9.22 -0.92 -0.83 0.91 0.67 2.07 A 12.17 A A
Cd-109 19.62 0.1 20.5 3.1 15.12 4.49 0.45 0.28 1.04 0.88 8.00 A 15.13 A A
Cs-134 13.03 0.1 13.2 0.6 4.55 1.30 0.13 0.28 1.01 0.17 1.57 A 4.61 A A
Cs-137 16.72 0.08 17.3 0.8 4.62 3.47 0.35 0.72 1.03 0.58 2.07 A 4.65 A A
Pb-210 9.55 0.15 13.5 4.4 32.59 41.36 4.14 0.90 1.41 3.95 11.36 A 32.63 A A
Am-241 3.66 0.023 3.66 0.5 13.66 0.00 0.00 0.00 1.00 0.00 1.29 A 13.68 A A
Appendix C, Page 15

The IAEA-CU-2006-04 ALMERA open proficiency test on the determination of gamma emitting radionuclides
Laboratory No. 313, ATOMIC ENERGY COMMISSION OF SYRIA, DAMASCUS, SYRIAN ARAB REPUBLIC
Samples received on 2006-06-22, results submitted on 2006-06-29
Evaluation on Sample No. 1, Soil Reference Date: 01-June-2006
Analyte IAEA Value
[Bq/kg d.m.]
IAEA Unc
[Bq/kg d.m.]
Lab Value
[Bq/kg d.m.]
Lab Unc
[Bq/kg d.m.]
Lab Unc
%
Rel. Bias
%
z-Score u-Test Ratio
Lab/IAEA
A1 A2 Trueness P(%) Precision Final Score
Mn-54 48 0.98 49.55 1.12 2.26 3.23 0.32 1.04 1.03 1.55 3.84 A 3.05 A A
Co-60 56.1 1.37 57.7 1.3 2.25 2.85 0.29 0.85 1.03 1.60 4.87 A 3.32 A A
Zn-65 77.6 2.54 73.44 1.74 2.37 -5.36 -0.54 -1.35 0.95 4.16 7.94 A 4.04 A A
Cd-109 177.6 8.4 225 12 5.33 26.69 2.67 3.24 1.27 47.40 37.79 N 7.13 A N
Cs-134 64.2 1.87 61.14 1.37 2.24 -4.77 -0.48 -1.32 0.95 3.06 5.98 A 3.67 A A
Cs-137 52.6 1.08 53.94 1.27 2.35 2.55 0.25 0.80 1.03 1.34 4.30 A 3.12 A A
Pb-210 259.5 12.53 261 32 12.26 0.58 0.06 0.04 1.01 1.50 88.66 A 13.18 A A
Am-241 96.6 2.78 104 7 6.73 7.66 0.77 0.98 1.08 7.40 19.43 A 7.32 A A
Evaluation on Sample No. 2, Grass
Analyte IAEA Value
[Bq/kg d.m.]
IAEA Unc
[Bq/kg d.m.]
Lab Value
[Bq/kg d.m.]
Lab Unc
[Bq/kg d.m.]
Lab Unc
%
Rel. Bias
%
z-Score u-Test Ratio
Lab/IAEA
A1 A2 Trueness P(%) Precision Final Score
K-40 1059 28 1020 35 3.43 -3.68 -0.37 -0.87 0.96 39.00 115.64 A 4.33 A A
Cs-137 11320 185 11500 500 4.35 1.59 0.16 0.34 1.02 180.00 1375.47 A 4.64 A A
Evaluation on Sample No. 3, Water
Analyte IAEA Value
[Bq/kg]
IAEA Unc
[Bq/kg]
Lab Value
[Bq/kg]
Lab Unc
[Bq/kg]
Lab Unc
%
Rel. Bias
%
z-Score u-Test Ratio
Lab/IAEA
A1 A2 Trueness P(%) Precision Final Score
Mn-54 4.89 0.017 4.66 0.15 3.22 -4.70 -0.47 -1.52 0.95 0.23 0.39 A 3.24 A A
Co-60 5.8 0.04 5.79 0.14 2.42 -0.17 -0.02 -0.07 1.00 0.01 0.38 A 2.51 A A
Zn-65 7.27 0.075 6.53 0.26 3.98 -10.18 -1.02 -2.73 0.90 0.74 0.70 N 4.11 A W
Cd-109 19.62 0.1
Cs-134 13.03 0.1 11.4 0.21 1.84 -12.51 -1.25 -7.01 0.87 1.63 0.60 N 2.00 A W
Cs-137 16.72 0.08 16.46 0.33 2.00 -1.56 -0.16 -0.77 0.98 0.26 0.88 A 2.06 A A
Pb-210 9.55 0.15
Am-241 3.66 0.023
Appendix C, Page 16

The IAEA-CU-2006-04 ALMERA open proficiency test on the determination of gamma emitting radionuclides
Laboratory No. 314, LABORATORY FOR RADIATION RESEARCH, RIVM, BILTHOVEN, THE NETHERLANDS
Samples received on 2006-06-22, results submitted on 2006-06-27
Evaluation on Sample No. 1, Soil Reference Date: 01-June-2006
Analyte IAEA Value
[Bq/kg d.m.]
IAEA Unc
[Bq/kg d.m.]
Lab Value
[Bq/kg d.m.]
Lab Unc
[Bq/kg d.m.]
Lab Unc
%
Rel. Bias
%
z-Score u-Test Ratio
Lab/IAEA
A1 A2 Trueness P(%) Precision Final Score
Mn-54 48 0.98 53 4 7.55 10.42 1.04 1.21 1.10 5.00 10.63 A 7.82 A A
Co-60 56.1 1.37 59 4 6.78 5.17 0.52 0.69 1.05 2.90 10.91 A 7.21 A A
Zn-65 77.6 2.54 79 6 7.59 1.80 0.18 0.21 1.02 1.40 16.81 A 8.27 A A
Cd-109 177.6 8.4 190 20 10.53 6.98 0.70 0.57 1.07 12.40 55.97 A 11.54 A A
Cs-134 64.2 1.87 68 5 7.35 5.92 0.59 0.71 1.06 3.80 13.77 A 7.91 A A
Cs-137 52.6 1.08 57 4 7.02 8.37 0.84 1.06 1.08 4.40 10.69 A 7.31 A A
Pb-210 259.5 12.53 290 30 10.34 11.75 1.18 0.94 1.12 30.50 83.88 A 11.42 A A
Am-241 96.6 2.78 101 11 10.89 4.55 0.46 0.39 1.05 4.40 29.27 A 11.26 A A
Evaluation on Sample No. 2, Grass
Analyte IAEA Value
[Bq/kg d.m.]
IAEA Unc
[Bq/kg d.m.]
Lab Value
[Bq/kg d.m.]
Lab Unc
[Bq/kg d.m.]
Lab Unc
%
Rel. Bias
%
z-Score u-Test Ratio
Lab/IAEA
A1 A2 Trueness P(%) Precision Final Score
K-40 1059 28 1060 80 7.55 0.09 0.01 0.01 1.00 1.00 218.68 A 8.00 A A
Cs-137 11320 185 11800 800 6.78 4.24 0.42 0.58 1.04 480.00 2118.47 A 6.97 A A
Evaluation on Sample No. 3, Water
Analyte IAEA Value
[Bq/kg]
IAEA Unc
[Bq/kg]
Lab Value
[Bq/kg]
Lab Unc
[Bq/kg]
Lab Unc
%
Rel. Bias
%
z-Score u-Test Ratio
Lab/IAEA
A1 A2 Trueness P(%) Precision Final Score
Mn-54 4.89 0.017 4.6 0.3 6.52 -5.93 -0.59 -0.97 0.94 0.29 0.78 A 6.53 A A
Co-60 5.8 0.04 6 0.4 6.67 3.45 0.34 0.50 1.03 0.20 1.04 A 6.70 A A
Zn-65 7.27 0.075 7 0.5 7.14 -3.71 -0.37 -0.53 0.96 0.27 1.30 A 7.22 A A
Cd-109 19.62 0.1 24.5 1.6 6.53 24.87 2.49 3.04 1.25 4.88 4.14 N 6.55 A N
Cs-134 13.03 0.1 13.5 0.7 5.19 3.61 0.36 0.66 1.04 0.47 1.82 A 5.24 A A
Cs-137 16.72 0.08 16.6 0.9 5.42 -0.72 -0.07 -0.13 0.99 0.12 2.33 A 5.44 A A
Pb-210 9.55 0.15 9 2 22.22 -5.76 -0.58 -0.27 0.94 0.55 5.17 A 22.28 A A
Am-241 3.66 0.023 3.8 0.3 7.89 3.83 0.38 0.47 1.04 0.14 0.78 A 7.92 A A
Appendix C, Page 17

The IAEA-CU-2006-04 ALMERA open proficiency test on the determination of gamma emitting radionuclides
Laboratory No. 315, SAVANNAH RIVER TECHNOLOGY CENTER, AIKEN, UNITED STATES OF AMERICA
Samples received on 2006-06-23, results submitted on 2006-06-27
Evaluation on Sample No. 1, Soil Reference Date: 01-June-2006
Analyte IAEA Value
[Bq/kg d.m.]
IAEA Unc
[Bq/kg d.m.]
Lab Value
[Bq/kg d.m.]
Lab Unc
[Bq/kg d.m.]
Lab Unc
%
Rel. Bias
%
z-Score u-Test Ratio
Lab/IAEA
A1 A2 Trueness P(%) Precision Final Score
Mn-54 48 0.98 48.3 0.9 1.86 0.62 0.06 0.23 1.01 0.30 3.43 A 2.76 A A
Co-60 56.1 1.37 54.7 1.4 2.56 -2.50 -0.25 -0.71 0.98 1.40 5.05 A 3.54 A A
Zn-65 77.6 2.54 75.9 1.6 2.11 -2.19 -0.22 -0.57 0.98 1.70 7.74 A 3.89 A A
Cd-109 177.6 8.4 280 10 3.57 57.66 5.77 7.84 1.58 102.40 33.69 N 5.93 A N
Cs-134 64.2 1.87 61.7 1.6 2.59 -3.89 -0.39 -1.02 0.96 2.50 6.35 A 3.90 A A
Cs-137 52.6 1.08 55.8 1.1 1.97 6.08 0.61 2.08 1.06 3.20 3.98 A 2.85 A A
Pb-210 259.5 12.53 187 6 3.21 -27.94 -2.79 -5.22 0.72 72.50 35.84 N 5.80 A W
Am-241 96.6 2.78 75.1 1.5 2.00 -22.26 -2.23 -6.81 0.78 21.50 8.15 N 3.50 A W
Evaluation on Sample No. 2, Grass
Analyte IAEA Value
[Bq/kg d.m.]
IAEA Unc
[Bq/kg d.m.]
Lab Value
[Bq/kg d.m.]
Lab Unc
[Bq/kg d.m.]
Lab Unc
%
Rel. Bias
%
z-Score u-Test Ratio
Lab/IAEA
A1 A2 Trueness P(%) Precision Final Score
K-40 1059 28 990 30 3.03 -6.52 -0.65 -1.68 0.93 69.00 105.87 A 4.02 A A
Cs-137 11320 185 11300 300 2.65 -0.18 -0.02 -0.06 1.00 20.00 909.34 A 3.12 A A
Evaluation on Sample No. 3, Water
Analyte IAEA Value
[Bq/kg]
IAEA Unc
[Bq/kg]
Lab Value
[Bq/kg]
Lab Unc
[Bq/kg]
Lab Unc
%
Rel. Bias
%
z-Score u-Test Ratio
Lab/IAEA
A1 A2 Trueness P(%) Precision Final Score
Mn-54 4.89 0.017 4.73 0.14 2.96 -3.27 -0.33 -1.13 0.97 0.16 0.36 A 2.98 A A
Co-60 5.8 0.04 5.93 0.16 2.70 2.24 0.22 0.79 1.02 0.13 0.43 A 2.78 A A
Zn-65 7.27 0.075 6.63 0.24 3.62 -8.80 -0.88 -2.55 0.91 0.64 0.65 A 3.76 A A
Cd-109 19.62 0.1 26.4 1.5 5.68 34.56 3.46 4.51 1.35 6.78 3.88 N 5.70 A N
Cs-134 13.03 0.1 11.3 0.4 3.54 -13.28 -1.33 -4.20 0.87 1.73 1.06 N 3.62 A W
Cs-137 16.72 0.08 16.6 0.3 1.81 -0.72 -0.07 -0.39 0.99 0.12 0.80 A 1.87 A A
Pb-210 9.55 0.15
Am-241 3.66 0.023 3.49 0.27 7.74 -4.64 -0.46 -0.63 0.95 0.17 0.70 A 7.76 A A
Appendix C, Page 18

The IAEA-CU-2006-04 ALMERA open proficiency test on the determination of gamma emitting radionuclides
Laboratory No. 318, JORDAN ATOMIC ENERGY COMMISSION, AMMAN, JORDAN
Samples received on 2006-06-22, results submitted on
Evaluation on Sample No. 1, Soil Reference Date: 01-June-2006
Analyte IAEA Value
[Bq/kg d.m.]
IAEA Unc
[Bq/kg d.m.]
Lab Value
[Bq/kg d.m.]
Lab Unc
[Bq/kg d.m.]
Lab Unc
%
Rel. Bias
%
z-Score u-Test Ratio
Lab/IAEA
A1 A2 Trueness P(%) Precision Final Score
Mn-54 48 0.98 49.2 1.3 2.64 2.50 0.25 0.74 1.03 1.20 4.20 A 3.34 A A
Co-60 56.1 1.37 60.1 1.1 1.83 7.13 0.71 2.28 1.07 4.00 4.53 A 3.05 A A
Zn-65 77.6 2.54 74.1 2.4 3.24 -4.51 -0.45 -1.00 0.95 3.50 9.02 A 4.60 A A
Cd-109 177.6 8.4 60.7 8.6 14.17 -65.82 -6.58 -9.72 0.34 116.90 31.02 N 14.94 A N
Cs-134 64.2 1.87 67.3 1 1.49 4.83 0.48 1.46 1.05 3.10 5.47 A 3.27 A A
Cs-137 52.6 1.08 56.7 1.5 2.65 7.79 0.78 2.22 1.08 4.10 4.77 A 3.35 A A
Pb-210 259.5 12.53 209.1 20 9.56 -19.42 -1.94 -2.14 0.81 50.40 60.89 A 10.71 A A
Am-241 96.6 2.78 95.1 2.6 2.73 -1.55 -0.16 -0.39 0.98 1.50 9.82 A 3.97 A A
Evaluation on Sample No. 2, Grass
Analyte IAEA Value
[Bq/kg d.m.]
IAEA Unc
[Bq/kg d.m.]
Lab Value
[Bq/kg d.m.]
Lab Unc
[Bq/kg d.m.]
Lab Unc
%
Rel. Bias
%
z-Score u-Test Ratio
Lab/IAEA
A1 A2 Trueness P(%) Precision Final Score
K-40 1059 28 1195 42 3.51 12.84 1.28 2.69 1.13 136.00 130.23 N 4.40 A W
Cs-137 11320 185 11757 277 2.36 3.86 0.39 1.31 1.04 437.00 859.39 A 2.87 A A
Evaluation on Sample No. 3, Water
Analyte IAEA Value
[Bq/kg]
IAEA Unc
[Bq/kg]
Lab Value
[Bq/kg]
Lab Unc
[Bq/kg]
Lab Unc
%
Rel. Bias
%
z-Score u-Test Ratio
Lab/IAEA
A1 A2 Trueness P(%) Precision Final Score
Mn-54 4.89 0.017 4.8 0.2 4.17 -1.84 -0.18 -0.45 0.98 0.09 0.52 A 4.18 A A
Co-60 5.8 0.04 5.9 0.2 3.39 1.72 0.17 0.49 1.02 0.10 0.53 A 3.46 A A
Zn-65 7.27 0.075 6.8 0.3 4.41 -6.46 -0.65 -1.52 0.94 0.47 0.80 A 4.53 A A
Cd-109 19.62 0.1 41.3 3.8 9.20 110.50 11.05 5.70 2.10 21.68 9.81 N 9.22 A N
Cs-134 13.03 0.1 13.3 0.2 1.50 2.07 0.21 1.21 1.02 0.27 0.58 A 1.69 A A
Cs-137 16.72 0.08 17 0.5 2.94 1.67 0.17 0.55 1.02 0.28 1.31 A 2.98 A A
Pb-210 9.55 0.15 8.7 3.9 44.83 -8.90 -0.89 -0.22 0.91 0.85 10.07 A 44.86 N W
Am-241 3.66 0.023 7.4 0.4 5.41 102.19 10.22 9.33 2.02 3.74 1.03 N 5.44 A N
Appendix C, Page 19

The IAEA-CU-2006-04 ALMERA open proficiency test on the determination of gamma emitting radionuclides
Laboratory No. 319, RIS LAB, ENVIRONMENTAL PROTECTION AGENCY, APAT, ROME, ITALY
Samples received on 2006-06-21, results submitted on 2006-06-23
Evaluation on Sample No. 1, Soil Reference Date: 01-June-2006
Analyte IAEA Value
[Bq/kg d.m.]
IAEA Unc
[Bq/kg d.m.]
Lab Value
[Bq/kg d.m.]
Lab Unc
[Bq/kg d.m.]
Lab Unc
%
Rel. Bias
%
z-Score u-Test Ratio
Lab/IAEA
A1 A2 Trueness P(%) Precision Final Score
Mn-54 48 0.98 55.4 2.1 3.79 15.42 1.54 3.19 1.15 7.40 5.98 N 4.31 A W
Co-60 56.1 1.37 62.3 3.1 4.98 11.05 1.11 1.83 1.11 6.20 8.74 A 5.54 A A
Zn-65 77.6 2.54 83.2 3.1 3.73 7.22 0.72 1.40 1.07 5.60 10.34 A 4.96 A A
Cd-109 177.6 8.4 254.1 18.2 7.16 43.07 4.31 3.82 1.43 76.50 51.72 N 8.58 A N
Cs-134 64.2 1.87 73.3 3.5 4.77 14.17 1.42 2.29 1.14 9.10 10.24 A 5.59 A A
Cs-137 52.6 1.08 60.8 2.3 3.78 15.59 1.56 3.23 1.16 8.20 6.56 N 4.30 A W
Pb-210 259.5 12.53 212.1 21.5 10.14 -18.27 -1.83 -1.90 0.82 47.40 64.20 A 11.23 A A
Am-241 96.6 2.78 93.3 7.9 8.47 -3.42 -0.34 -0.39 0.97 3.30 21.61 A 8.94 A A
Evaluation on Sample No. 2, Grass
Analyte IAEA Value
[Bq/kg d.m.]
IAEA Unc
[Bq/kg d.m.]
Lab Value
[Bq/kg d.m.]
Lab Unc
[Bq/kg d.m.]
Lab Unc
%
Rel. Bias
%
z-Score u-Test Ratio
Lab/IAEA
A1 A2 Trueness P(%) Precision Final Score
K-40 1059 28 1276.5 37.2 2.91 20.54 2.05 4.67 1.21 217.50 120.12 N 3.93 A W
Cs-137 11320 185 12170.1 230.8 1.90 7.51 0.75 2.87 1.08 850.10 763.15 N 2.50 A W
Evaluation on Sample No. 3, Water
Analyte IAEA Value
[Bq/kg]
IAEA Unc
[Bq/kg]
Lab Value
[Bq/kg]
Lab Unc
[Bq/kg]
Lab Unc
%
Rel. Bias
%
z-Score u-Test Ratio
Lab/IAEA
A1 A2 Trueness P(%) Precision Final Score
Mn-54 4.89 0.017 5.5 0.2 3.64 12.47 1.25 3.04 1.12 0.61 0.52 N 3.65 A W
Co-60 5.8 0.04 6.3 0.3 4.76 8.62 0.86 1.65 1.09 0.50 0.78 A 4.81 A A
Zn-65 7.27 0.075 7.6 0.3 3.95 4.54 0.45 1.07 1.05 0.33 0.80 A 4.08 A A
Cd-109 19.62 0.1 20.3 1.9 9.36 3.47 0.35 0.36 1.03 0.68 4.91 A 9.37 A A
Cs-134 13.03 0.1 12.7 0.6 4.72 -2.53 -0.25 -0.54 0.97 0.33 1.57 A 4.79 A A
Cs-137 16.72 0.08 17.7 0.5 2.82 5.86 0.59 1.94 1.06 0.98 1.31 A 2.87 A A
Pb-210 9.55 0.15 10.9 1.5 13.76 14.14 1.41 0.90 1.14 1.35 3.89 A 13.85 A A
Am-241 3.66 0.023 3.8 0.2 5.26 3.83 0.38 0.70 1.04 0.14 0.52 A 5.30 A A
Appendix C, Page 20

The IAEA-CU-2006-04 ALMERA open proficiency test on the determination of gamma emitting radionuclides
Laboratory No. 320, INSTITUTE FOR NUCLEAR RESEARCH, PITESTI, ROMANIA
Samples received on 2006-06-21, results submitted on 2006-06-23
Evaluation on Sample No. 1, Soil Reference Date: 01-June-2006
Analyte IAEA Value
[Bq/kg d.m.]
IAEA Unc
[Bq/kg d.m.]
Lab Value
[Bq/kg d.m.]
Lab Unc
[Bq/kg d.m.]
Lab Unc
%
Rel. Bias
%
z-Score u-Test Ratio
Lab/IAEA
A1 A2 Trueness P(%) Precision Final Score
Mn-54 48 0.98 55.4 1.8 3.25 15.42 1.54 3.61 1.15 7.40 5.29 N 3.84 A W
Co-60 56.1 1.37 58.5 1.7 2.91 4.28 0.43 1.10 1.04 2.40 5.63 A 3.80 A A
Zn-65 77.6 2.54 78.5 2.9 3.69 1.16 0.12 0.23 1.01 0.90 9.95 A 4.94 A A
Cd-109 177.6 8.4 166.6 12.1 7.26 -6.19 -0.62 -0.75 0.94 11.00 38.00 A 8.67 A A
Cs-134 64.2 1.87 67.7 1.9 2.81 5.45 0.55 1.31 1.05 3.50 6.88 A 4.04 A A
Cs-137 52.6 1.08 59.2 2 3.38 12.55 1.25 2.90 1.13 6.60 5.86 N 3.95 A W
Pb-210 259.5 12.53 160 80.3 50.19 -38.34 -3.83 -1.22 0.62 99.50 209.68 A 50.42 N N
Am-241 96.6 2.78 87.4 3.5 4.00 -9.52 -0.95 -2.06 0.90 9.20 11.53 A 4.93 A A
Evaluation on Sample No. 2, Grass
Analyte IAEA Value
[Bq/kg d.m.]
IAEA Unc
[Bq/kg d.m.]
Lab Value
[Bq/kg d.m.]
Lab Unc
[Bq/kg d.m.]
Lab Unc
%
Rel. Bias
%
z-Score u-Test Ratio
Lab/IAEA
A1 A2 Trueness P(%) Precision Final Score
K-40 1059 28 1703 70 4.11 60.81 6.08 8.54 1.61 644.00 194.51 N 4.89 A N
Cs-137 11320 185 12807 351 2.74 13.14 1.31 3.75 1.13 1487.00 1023.67 N 3.19 A W
Evaluation on Sample No. 3, Water
Analyte IAEA Value
[Bq/kg]
IAEA Unc
[Bq/kg]
Lab Value
[Bq/kg]
Lab Unc
[Bq/kg]
Lab Unc
%
Rel. Bias
%
z-Score u-Test Ratio
Lab/IAEA
A1 A2 Trueness P(%) Precision Final Score
Mn-54 4.89 0.017 5.9 0.3 5.08 20.65 2.07 3.36 1.21 1.01 0.78 N 5.10 A N
Co-60 5.8 0.04 5.7 0.2 3.51 -1.72 -0.17 -0.49 0.98 0.10 0.53 A 3.58 A A
Zn-65 7.27 0.075 6.9 0.4 5.80 -5.09 -0.51 -0.91 0.95 0.37 1.05 A 5.89 A A
Cd-109 19.62 0.1 24.7 5.5 22.27 25.89 2.59 0.92 1.26 5.08 14.19 A 22.27 N N
Cs-134 13.03 0.1 13.2 0.4 3.03 1.30 0.13 0.41 1.01 0.17 1.06 A 3.13 A A
Cs-137 16.72 0.08 19.4 0.6 3.09 16.03 1.60 4.43 1.16 2.68 1.56 N 3.13 A W
Pb-210 9.55 0.15 29.7 15.2 51.18 210.99 21.10 1.33 3.11 20.15 39.22 A 51.20 N N
Am-241 3.66 0.023 4.1 0.4 9.76 12.02 1.20 1.10 1.12 0.44 1.03 A 9.78 A A
Appendix C, Page 21

The IAEA-CU-2006-04 ALMERA open proficiency test on the determination of gamma emitting radionuclides
Laboratory No. 321, TARAPUR ATOMIC POWER STATION, TARAPUR, INDIA
Samples received on 2006-06-22, results submitted on 2006-06-29
Evaluation on Sample No. 1, Soil Reference Date: 01-June-2006
Analyte IAEA Value
[Bq/kg d.m.]
IAEA Unc
[Bq/kg d.m.]
Lab Value
[Bq/kg d.m.]
Lab Unc
[Bq/kg d.m.]
Lab Unc
%
Rel. Bias
%
z-Score u-Test Ratio
Lab/IAEA
A1 A2 Trueness P(%) Precision Final Score
Mn-54 48 0.98 47.26 1.11 2.35 -1.54 -0.15 -0.50 0.98 0.74 3.82 A 3.11 A A
Co-60 56.1 1.37 43.16 1.35 3.13 -23.07 -2.31 -6.73 0.77 12.94 4.96 N 3.97 A W
Zn-65 77.6 2.54 69.17 1.75 2.53 -10.86 -1.09 -2.73 0.89 8.43 7.96 N 4.14 A W
Cd-109 177.6 8.4 283 8 2.83 59.35 5.93 9.09 1.59 105.40 29.93 N 5.51 A N
Cs-134 64.2 1.87 58.48 1.35 2.31 -8.91 -0.89 -2.48 0.91 5.72 5.95 A 3.72 A A
Cs-137 52.6 1.08 51.89 1.2 2.31 -1.35 -0.13 -0.44 0.99 0.71 4.17 A 3.09 A A
Pb-210 259.5 12.53 416 31 7.45 60.31 6.03 4.68 1.60 156.50 86.27 N 8.88 A N
Am-241 96.6 2.78 96.1 2.5 2.60 -0.52 -0.05 -0.13 0.99 0.50 9.65 A 3.88 A A
Evaluation on Sample No. 2, Grass
Analyte IAEA Value
[Bq/kg d.m.]
IAEA Unc
[Bq/kg d.m.]
Lab Value
[Bq/kg d.m.]
Lab Unc
[Bq/kg d.m.]
Lab Unc
%
Rel. Bias
%
z-Score u-Test Ratio
Lab/IAEA
A1 A2 Trueness P(%) Precision Final Score
K-40 1059 28 984 40 4.07 -7.08 -0.71 -1.54 0.93 75.00 125.97 A 4.85 A A
Cs-137 11320 185 12111 244 2.01 6.99 0.70 2.58 1.07 791.00 790.01 N 2.59 A W
Evaluation on Sample No. 3, Water
Analyte IAEA Value
[Bq/kg]
IAEA Unc
[Bq/kg]
Lab Value
[Bq/kg]
Lab Unc
[Bq/kg]
Lab Unc
%
Rel. Bias
%
z-Score u-Test Ratio
Lab/IAEA
A1 A2 Trueness P(%) Precision Final Score
Mn-54 4.89 0.017 5.61 0.17 3.03 14.72 1.47 4.21 1.15 0.72 0.44 N 3.05 A W
Co-60 5.8 0.04 5.93 0.19 3.20 2.24 0.22 0.67 1.02 0.13 0.50 A 3.28 A A
Zn-65 7.27 0.075 8.69 0.32 3.68 19.53 1.95 4.32 1.20 1.42 0.85 N 3.82 A W
Cd-109 19.62 0.1 18.4 1.3 7.07 -6.22 -0.62 -0.94 0.94 1.22 3.36 A 7.08 A A
Cs-134 13.03 0.1 12.85 0.32 2.49 -1.38 -0.14 -0.54 0.99 0.18 0.86 A 2.61 A A
Cs-137 16.72 0.08 19.56 0.45 2.30 16.99 1.70 6.21 1.17 2.84 1.18 N 2.35 A W
Pb-210 9.55 0.15 11.53 4.42 38.33 20.73 2.07 0.45 1.21 1.98 11.41 A 38.37 N W
Am-241 3.66 0.023 3.43 0.22 6.41 -6.28 -0.63 -1.04 0.94 0.23 0.57 A 6.44 A A
Appendix C, Page 22

The IAEA-CU-2006-04 ALMERA open proficiency test on the determination of gamma emitting radionuclides
Laboratory No. 322, CENTER FOR ECOTOXICOLOGICAL RESEARCHES OF MONTENEGRO, PODGORICA, MONTENEGRO
Samples received on 2006-06-22, results submitted on 2006-06-25
Evaluation on Sample No. 1, Soil Reference Date: 01-June-2006
Analyte IAEA Value
[Bq/kg d.m.]
IAEA Unc
[Bq/kg d.m.]
Lab Value
[Bq/kg d.m.]
Lab Unc
[Bq/kg d.m.]
Lab Unc
%
Rel. Bias
%
z-Score u-Test Ratio
Lab/IAEA
A1 A2 Trueness P(%) Precision Final Score
Mn-54 48 0.98 53.3 2 3.75 11.04 1.10 2.38 1.11 5.30 5.75 A 4.27 A A
Co-60 56.1 1.37 61.4 1.6 2.61 9.45 0.94 2.52 1.09 5.30 5.43 A 3.57 A A
Zn-65 77.6 2.54 82.7 3.3 3.99 6.57 0.66 1.22 1.07 5.10 10.74 A 5.16 A A
Cd-109 177.6 8.4 280 14 5.00 57.66 5.77 6.27 1.58 102.40 42.12 N 6.88 A N
Cs-134 64.2 1.87 65.4 1.5 2.29 1.87 0.19 0.50 1.02 1.20 6.18 A 3.71 A A
Cs-137 52.6 1.08 54.2 2 3.69 3.04 0.30 0.70 1.03 1.60 5.86 A 4.22 A A
Pb-210 259.5 12.53 47.1 12.6 26.75 -81.85 -8.18 -11.95 0.18 212.40 45.85 N 27.18 A N
Am-241 96.6 2.78 112 5 4.46 15.94 1.59 2.69 1.16 15.40 14.76 N 5.31 A W
Evaluation on Sample No. 2, Grass
Analyte IAEA Value
[Bq/kg d.m.]
IAEA Unc
[Bq/kg d.m.]
Lab Value
[Bq/kg d.m.]
Lab Unc
[Bq/kg d.m.]
Lab Unc
%
Rel. Bias
%
z-Score u-Test Ratio
Lab/IAEA
A1 A2 Trueness P(%) Precision Final Score
K-40 1059 28 1139 62 5.44 7.55 0.76 1.18 1.08 80.00 175.52 A 6.05 A A
Cs-137 11320 185 10847 406 3.74 -4.18 -0.42 -1.06 0.96 473.00 1151.10 A 4.08 A A
Evaluation on Sample No. 3, Water
Analyte IAEA Value
[Bq/kg]
IAEA Unc
[Bq/kg]
Lab Value
[Bq/kg]
Lab Unc
[Bq/kg]
Lab Unc
%
Rel. Bias
%
z-Score u-Test Ratio
Lab/IAEA
A1 A2 Trueness P(%) Precision Final Score
Mn-54 4.89 0.017 5.09 0.22 4.32 4.09 0.41 0.91 1.04 0.20 0.57 A 4.34 A A
Co-60 5.8 0.04 6.16 0.26 4.22 6.21 0.62 1.37 1.06 0.36 0.68 A 4.28 A A
Zn-65 7.27 0.075 7.56 0.38 5.03 3.99 0.40 0.75 1.04 0.29 1.00 A 5.13 A A
Cd-109 19.62 0.1 16.7 2.3 13.77 -14.88 -1.49 -1.27 0.85 2.92 5.94 A 13.78 A A
Cs-134 13.03 0.1 12 0.3 2.50 -7.90 -0.79 -3.26 0.92 1.03 0.82 N 2.62 A W
Cs-137 16.72 0.08 17.8 0.6 3.37 6.46 0.65 1.78 1.06 1.08 1.56 A 3.40 A A
Pb-210 9.55 0.15 0.34 0.1 29.41 -96.44 -9.64 -51.09 0.04 9.21 0.47 N 29.45 A N
Am-241 3.66 0.023 3.75 0.53 14.13 2.46 0.25 0.17 1.02 0.09 1.37 A 14.15 A A
Appendix C, Page 23

The IAEA-CU-2006-04 ALMERA open proficiency test on the determination of gamma emitting radionuclides
Laboratory No. 325, LEBANESE ATOMIC ENERGY COMMISSION, BEIRUT, LEBANON
Samples received on 2006-06-22, results submitted on 2006-06-23
Evaluation on Sample No. 1, Soil Reference Date: 01-June-2006
Analyte IAEA Value
[Bq/kg d.m.]
IAEA Unc
[Bq/kg d.m.]
Lab Value
[Bq/kg d.m.]
Lab Unc
[Bq/kg d.m.]
Lab Unc
%
Rel. Bias
%
z-Score u-Test Ratio
Lab/IAEA
A1 A2 Trueness P(%) Precision Final Score
Mn-54 48 0.98 53.4 3.07 5.75 11.25 1.12 1.68 1.11 5.40 8.31 A 6.10 A A
Co-60 56.1 1.37 55.33 3.23 5.84 -1.37 -0.14 -0.22 0.99 0.77 9.05 A 6.33 A A
Zn-65 77.6 2.54 86.32 5.05 5.85 11.24 1.12 1.54 1.11 8.72 14.58 A 6.70 A A
Cd-109 177.6 8.4
Cs-134 64.2 1.87 65.59 3.85 5.87 2.17 0.22 0.32 1.02 1.39 11.04 A 6.55 A A
Cs-137 52.6 1.08 57.76 3.41 5.90 9.81 0.98 1.44 1.10 5.16 9.23 A 6.25 A A
Pb-210 259.5 12.53
Am-241 96.6 2.78
Evaluation on Sample No. 2, Grass
Analyte IAEA Value
[Bq/kg d.m.]
IAEA Unc
[Bq/kg d.m.]
Lab Value
[Bq/kg d.m.]
Lab Unc
[Bq/kg d.m.]
Lab Unc
%
Rel. Bias
%
z-Score u-Test Ratio
Lab/IAEA
A1 A2 Trueness P(%) Precision Final Score
K-40 1059 28 1160 82 7.07 9.54 0.95 1.17 1.10 101.00 223.55 A 7.55 A A
Cs-137 11320 185 12600 853 6.77 11.31 1.13 1.47 1.11 1280.00 2251.90 A 6.96 A A
Evaluation on Sample No. 3, Water
Analyte IAEA Value
[Bq/kg]
IAEA Unc
[Bq/kg]
Lab Value
[Bq/kg]
Lab Unc
[Bq/kg]
Lab Unc
%
Rel. Bias
%
z-Score u-Test Ratio
Lab/IAEA
A1 A2 Trueness P(%) Precision Final Score
Mn-54 4.89 0.017 5.08 0.19 3.74 3.89 0.39 1.00 1.04 0.19 0.49 A 3.76 A A
Co-60 5.8 0.04 5.7 0.22 3.86 -1.72 -0.17 -0.45 0.98 0.10 0.58 A 3.92 A A
Zn-65 7.27 0.075 7.48 0.32 4.28 2.89 0.29 0.64 1.03 0.21 0.85 A 4.40 A A
Cd-109 19.62 0.1
Cs-134 13.03 0.1 12.82 0.44 3.43 -1.61 -0.16 -0.47 0.98 0.21 1.16 A 3.52 A A
Cs-137 16.72 0.08 18 0.59 3.28 7.66 0.77 2.15 1.08 1.28 1.54 A 3.31 A A
Pb-210 9.55 0.15
Am-241 3.66 0.023
Appendix C, Page 24

The IAEA-CU-2006-04 ALMERA open proficiency test on the determination of gamma emitting radionuclides
Laboratory No. 327, RESEARCH CENTER KARLSRUHE, KARLSRUHE, GERMANY
Samples received on 2006-06-20, results submitted on 2006-06-23
Evaluation on Sample No. 1, Soil Reference Date: 01-June-2006
Analyte IAEA Value
[Bq/kg d.m.]
IAEA Unc
[Bq/kg d.m.]
Lab Value
[Bq/kg d.m.]
Lab Unc
[Bq/kg d.m.]
Lab Unc
%
Rel. Bias
%
z-Score u-Test Ratio
Lab/IAEA
A1 A2 Trueness P(%) Precision Final Score
Mn-54 48 0.98 51.5 2.3 4.47 7.29 0.73 1.40 1.07 3.50 6.45 A 4.91 A A
Co-60 56.1 1.37 56.6 1.6 2.83 0.89 0.09 0.24 1.01 0.50 5.43 A 3.74 A A
Zn-65 77.6 2.54 77.2 3.3 4.27 -0.52 -0.05 -0.10 0.99 0.40 10.74 A 5.38 A A
Cd-109 177.6 8.4 74.2 22.1 29.78 -58.22 -5.82 -4.37 0.42 103.40 61.00 N 30.16 N N
Cs-134 64.2 1.87 69.5 2.1 3.02 8.26 0.83 1.88 1.08 5.30 7.25 A 4.20 A A
Cs-137 52.6 1.08 57.3 2.5 4.36 8.94 0.89 1.73 1.09 4.70 7.03 A 4.82 A A
Pb-210 259.5 12.53 213.5 10.1 4.73 -17.73 -1.77 -2.86 0.82 46.00 41.52 N 6.76 A W
Am-241 96.6 2.78 92.9 21.6 23.25 -3.83 -0.38 -0.17 0.96 3.70 56.19 A 23.43 A A
Evaluation on Sample No. 2, Grass
Analyte IAEA Value
[Bq/kg d.m.]
IAEA Unc
[Bq/kg d.m.]
Lab Value
[Bq/kg d.m.]
Lab Unc
[Bq/kg d.m.]
Lab Unc
%
Rel. Bias
%
z-Score u-Test Ratio
Lab/IAEA
A1 A2 Trueness P(%) Precision Final Score
K-40 1059 28 958 45 4.70 -9.54 -0.95 -1.91 0.90 101.00 136.74 A 5.39 A A
Cs-137 11320 185 10500 212 2.02 -7.24 -0.72 -2.91 0.93 820.00 725.93 N 2.60 A W
Evaluation on Sample No. 3, Water
Analyte IAEA Value
[Bq/kg]
IAEA Unc
[Bq/kg]
Lab Value
[Bq/kg]
Lab Unc
[Bq/kg]
Lab Unc
%
Rel. Bias
%
z-Score u-Test Ratio
Lab/IAEA
A1 A2 Trueness P(%) Precision Final Score
Mn-54 4.89 0.017 4.85 0.26 5.36 -0.82 -0.08 -0.15 0.99 0.04 0.67 A 5.37 A A
Co-60 5.8 0.04 5.55 0.19 3.42 -4.31 -0.43 -1.29 0.96 0.25 0.50 A 3.49 A A
Zn-65 7.27 0.075 7.09 0.4 5.64 -2.48 -0.25 -0.44 0.98 0.18 1.05 A 5.74 A A
Cd-109 19.62 0.1 17.4 1.57 9.02 -11.31 -1.13 -1.41 0.89 2.22 4.06 A 9.04 A A
Cs-134 13.03 0.1 13.2 0.36 2.73 1.30 0.13 0.45 1.01 0.17 0.96 A 2.83 A A
Cs-137 16.72 0.08 17.4 0.7 4.02 4.07 0.41 0.97 1.04 0.68 1.82 A 4.05 A A
Pb-210 9.55 0.15 7.9 12.9 163.29 -17.28 -1.73 -0.13 0.83 1.65 33.28 A 163.30 N W
Am-241 3.66 0.023 3.57 1.02 28.57 -2.46 -0.25 -0.09 0.98 0.09 2.63 A 28.58 N W
Appendix C, Page 25

The IAEA-CU-2006-04 ALMERA open proficiency test on the determination of gamma emitting radionuclides
Laboratory No. 331, ENEA, ISTITUTO DI RADIOPROTEZIONE, ROTONDELLA, ITALY
Samples received on 2006-06-30, results submitted on 2006-07-03
Evaluation on Sample No. 1, Soil Reference Date: 01-June-2006
Analyte IAEA Value
[Bq/kg d.m.]
IAEA Unc
[Bq/kg d.m.]
Lab Value
[Bq/kg d.m.]
Lab Unc
[Bq/kg d.m.]
Lab Unc
%
Rel. Bias
%
z-Score u-Test Ratio
Lab/IAEA
A1 A2 Trueness P(%) Precision Final Score
Mn-54 48 0.98 46.1 1.1 2.39 -3.96 -0.40 -1.29 0.96 1.90 3.80 A 3.14 A A
Co-60 56.1 1.37 51.1 0.7 1.37 -8.91 -0.89 -3.25 0.91 5.00 3.97 N 2.80 A W
Zn-65 77.6 2.54 74 1.5 2.03 -4.64 -0.46 -1.22 0.95 3.60 7.61 A 3.85 A A
Cd-109 177.6 8.4 195 20 10.26 9.80 0.98 0.80 1.10 17.40 55.97 A 11.29 A A
Cs-134 64.2 1.87 54.2 0.7 1.29 -15.58 -1.56 -5.01 0.84 10.00 5.15 N 3.19 A W
Cs-137 52.6 1.08 49.1 0.7 1.43 -6.65 -0.67 -2.72 0.93 3.50 3.32 N 2.50 A W
Pb-210 259.5 12.53 207 21 10.14 -20.23 -2.02 -2.15 0.80 52.50 63.09 A 11.24 A A
Am-241 96.6 2.78 75.5 2.4 3.18 -21.84 -2.18 -5.75 0.78 21.10 9.48 N 4.29 A W
Evaluation on Sample No. 2, Grass
Analyte IAEA Value
[Bq/kg d.m.]
IAEA Unc
[Bq/kg d.m.]
Lab Value
[Bq/kg d.m.]
Lab Unc
[Bq/kg d.m.]
Lab Unc
%
Rel. Bias
%
z-Score u-Test Ratio
Lab/IAEA
A1 A2 Trueness P(%) Precision Final Score
K-40 1059 28 885 17 1.92 -16.43 -1.64 -5.31 0.84 174.00 84.51 N 3.27 A W
Cs-137 11320 185 9713 13 0.13 -14.20 -1.42 -8.67 0.86 1607.00 478.48 N 1.64 A W
Evaluation on Sample No. 3, Water
Analyte IAEA Value
[Bq/kg]
IAEA Unc
[Bq/kg]
Lab Value
[Bq/kg]
Lab Unc
[Bq/kg]
Lab Unc
%
Rel. Bias
%
z-Score u-Test Ratio
Lab/IAEA
A1 A2 Trueness P(%) Precision Final Score
Mn-54 4.89 0.017 5.3 0.2 3.77 8.38 0.84 2.04 1.08 0.41 0.52 A 3.79 A A
Co-60 5.8 0.04 5.6 0.2 3.57 -3.45 -0.34 -0.98 0.97 0.20 0.53 A 3.64 A A
Zn-65 7.27 0.075 7.5 0.3 4.00 3.16 0.32 0.74 1.03 0.23 0.80 A 4.13 A A
Cd-109 19.62 0.1 20.5 2 9.76 4.49 0.45 0.44 1.04 0.88 5.17 A 9.77 A A
Cs-134 13.03 0.1 11.6 0.2 1.72 -10.97 -1.10 -6.40 0.89 1.43 0.58 N 1.89 A W
Cs-137 16.72 0.08 16.9 0.3 1.78 1.08 0.11 0.58 1.01 0.18 0.80 A 1.84 A A
Pb-210 9.55 0.15 18.6 1.9 10.22 94.76 9.48 4.75 1.95 9.05 4.92 N 10.34 A N
Am-241 3.66 0.023 3.7 0.5 13.51 1.09 0.11 0.08 1.01 0.04 1.29 A 13.53 A A
Appendix C, Page 26

The IAEA-CU-2006-04 ALMERA open proficiency test on the determination of gamma emitting radionuclides
Laboratory No. 332, ENVIRONMENTAL PROTECTION AGENCY, VILNIUS, LITHUANIA
Samples received on 2006-06-21, results submitted on
Evaluation on Sample No. 1, Soil Reference Date: 01-June-2006
Analyte IAEA Value
[Bq/kg d.m.]
IAEA Unc
[Bq/kg d.m.]
Lab Value
[Bq/kg d.m.]
Lab Unc
[Bq/kg d.m.]
Lab Unc
%
Rel. Bias
%
z-Score u-Test Ratio
Lab/IAEA
A1 A2 Trueness P(%) Precision Final Score
Mn-54 48 0.98 46.9 4.5 9.59 -2.29 -0.23 -0.24 0.98 1.10 11.88 A 9.81 A A
Co-60 56.1 1.37 55.3 4 7.23 -1.43 -0.14 -0.19 0.99 0.80 10.91 A 7.63 A A
Zn-65 77.6 2.54 77.3 8 10.35 -0.39 -0.04 -0.04 1.00 0.30 21.66 A 10.85 A A
Cd-109 177.6 8.4
Cs-134 64.2 1.87 59.7 4.5 7.54 -7.01 -0.70 -0.92 0.93 4.50 12.57 A 8.08 A A
Cs-137 52.6 1.08 47.7 4.5 9.43 -9.32 -0.93 -1.06 0.91 4.90 11.94 A 9.65 A A
Pb-210 259.5 12.53 811 136 16.77 212.52 21.25 4.04 3.13 551.50 352.37 N 17.45 A N
Am-241 96.6 2.78
Evaluation on Sample No. 2, Grass
Analyte IAEA Value
[Bq/kg d.m.]
IAEA Unc
[Bq/kg d.m.]
Lab Value
[Bq/kg d.m.]
Lab Unc
[Bq/kg d.m.]
Lab Unc
%
Rel. Bias
%
z-Score u-Test Ratio
Lab/IAEA
A1 A2 Trueness P(%) Precision Final Score
K-40 1059 28 1040 90 8.65 -1.79 -0.18 -0.20 0.98 19.00 243.18 A 9.05 A A
Cs-137 11320 185 6910 1040 15.05 -38.96 -3.90 -4.17 0.61 4410.00 2725.32 N 15.14 A N
Evaluation on Sample No. 3, Water
Analyte IAEA Value
[Bq/kg]
IAEA Unc
[Bq/kg]
Lab Value
[Bq/kg]
Lab Unc
[Bq/kg]
Lab Unc
%
Rel. Bias
%
z-Score u-Test Ratio
Lab/IAEA
A1 A2 Trueness P(%) Precision Final Score
Mn-54 4.89 0.017 47.5 2.45 5.16 871.37 87.14 17.39 9.71 42.61 6.32 N 5.17 A N
Co-60 5.8 0.04 5.39 0.5 9.28 -7.07 -0.71 -0.82 0.93 0.41 1.29 A 9.30 A A
Zn-65 7.27 0.075 7.05 0.5 7.09 -3.03 -0.30 -0.44 0.97 0.22 1.30 A 7.17 A A
Cd-109 19.62 0.1
Cs-134 13.03 0.1 11.7 0.5 4.27 -10.21 -1.02 -2.61 0.90 1.33 1.32 N 4.34 A W
Cs-137 16.72 0.08 17.1 1 5.85 2.27 0.23 0.38 1.02 0.38 2.59 A 5.87 A A
Pb-210 9.55 0.15 18.5 8.5 45.95 93.72 9.37 1.05 1.94 8.95 21.93 A 45.97 N N
Am-241 3.66 0.023
Appendix C, Page 27

The IAEA-CU-2006-04 ALMERA open proficiency test on the determination of gamma emitting radionuclides
Laboratory No. 334, INSTITUTO TECNOLOGICO E NUCLEAR, SACAVEM, PORTUGAL
Samples received on 2006-06-20, results submitted on 2006-06-23
Evaluation on Sample No. 1, Soil Reference Date: 01-June-2006
Analyte IAEA Value
[Bq/kg d.m.]
IAEA Unc
[Bq/kg d.m.]
Lab Value
[Bq/kg d.m.]
Lab Unc
[Bq/kg d.m.]
Lab Unc
%
Rel. Bias
%
z-Score u-Test Ratio
Lab/IAEA
A1 A2 Trueness P(%) Precision Final Score
Mn-54 48 0.98 53.8 1.7 3.16 12.08 1.21 2.96 1.12 5.80 5.06 N 3.76 A W
Co-60 56.1 1.37 59.1 1.3 2.20 5.35 0.53 1.59 1.05 3.00 4.87 A 3.29 A A
Zn-65 77.6 2.54 89.3 2.8 3.14 15.08 1.51 3.09 1.15 11.70 9.75 N 4.53 A W
Cd-109 177.6 8.4 188.9 7 3.71 6.36 0.64 1.03 1.06 11.30 28.21 A 6.01 A A
Cs-134 64.2 1.87 54.7 3.5 6.40 -14.80 -1.48 -2.39 0.85 9.50 10.24 A 7.03 A A
Cs-137 52.6 1.08 53.6 1.8 3.36 1.90 0.19 0.48 1.02 1.00 5.42 A 3.94 A A
Pb-210 259.5 12.53 176.5 6 3.40 -31.98 -3.20 -5.97 0.68 83.00 35.84 N 5.91 A W
Am-241 96.6 2.78 82.2 2.7 3.28 -14.91 -1.49 -3.72 0.85 14.40 10.00 N 4.37 A W
Evaluation on Sample No. 2, Grass
Analyte IAEA Value
[Bq/kg d.m.]
IAEA Unc
[Bq/kg d.m.]
Lab Value
[Bq/kg d.m.]
Lab Unc
[Bq/kg d.m.]
Lab Unc
%
Rel. Bias
%
z-Score u-Test Ratio
Lab/IAEA
A1 A2 Trueness P(%) Precision Final Score
K-40 1059 28 1093 48 4.39 3.21 0.32 0.61 1.03 34.00 143.37 A 5.13 A A
Cs-137 11320 185 11710 366 3.13 3.45 0.34 0.95 1.03 390.00 1058.05 A 3.53 A A
Evaluation on Sample No. 3, Water
Analyte IAEA Value
[Bq/kg]
IAEA Unc
[Bq/kg]
Lab Value
[Bq/kg]
Lab Unc
[Bq/kg]
Lab Unc
%
Rel. Bias
%
z-Score u-Test Ratio
Lab/IAEA
A1 A2 Trueness P(%) Precision Final Score
Mn-54 4.89 0.017 5.13 0.21 4.09 4.91 0.49 1.14 1.05 0.24 0.54 A 4.11 A A
Co-60 5.8 0.04 5.49 0.17 3.10 -5.34 -0.53 -1.78 0.95 0.31 0.45 A 3.17 A A
Zn-65 7.27 0.075 7.38 0.37 5.01 1.51 0.15 0.29 1.02 0.11 0.97 A 5.12 A A
Cd-109 19.62 0.1 20.6 1.1 5.34 4.99 0.50 0.89 1.05 0.98 2.85 A 5.36 A A
Cs-134 13.03 0.1 10.62 0.24 2.26 -18.50 -1.85 -9.27 0.82 2.41 0.67 N 2.39 A W
Cs-137 16.72 0.08 16.14 0.55 3.41 -3.47 -0.35 -1.04 0.97 0.58 1.43 A 3.44 A A
Pb-210 9.55 0.15 7.6 0.68 8.95 -20.42 -2.04 -2.80 0.80 1.95 1.80 N 9.08 A W
Am-241 3.66 0.023 3.43 0.14 4.08 -6.28 -0.63 -1.62 0.94 0.23 0.37 A 4.13 A A
Appendix C, Page 28

The IAEA-CU-2006-04 ALMERA open proficiency test on the determination of gamma emitting radionuclides
Laboratory No. 335, NATIONAL TECHNICAL UNIVERSITY OF ATHENS, ATHENS, GREECE
Samples received on 2006-06-20, results submitted on 2006-06-23
Evaluation on Sample No. 1, Soil Reference Date: 01-June-2006
Analyte IAEA Value
[Bq/kg d.m.]
IAEA Unc
[Bq/kg d.m.]
Lab Value
[Bq/kg d.m.]
Lab Unc
[Bq/kg d.m.]
Lab Unc
%
Rel. Bias
%
z-Score u-Test Ratio
Lab/IAEA
A1 A2 Trueness P(%) Precision Final Score
Mn-54 48 0.98 51 2 3.92 6.25 0.62 1.35 1.06 3.00 5.75 A 4.42 A A
Co-60 56.1 1.37 59 2 3.39 5.17 0.52 1.20 1.05 2.90 6.25 A 4.18 A A
Zn-65 77.6 2.54 88 5 5.68 13.40 1.34 1.85 1.13 10.40 14.47 A 6.56 A A
Cd-109 177.6 8.4 123 55 44.72 -30.74 -3.07 -0.98 0.69 54.60 143.55 A 44.96 N N
Cs-134 64.2 1.87 63 4 6.35 -1.87 -0.19 -0.27 0.98 1.20 11.39 A 6.99 A A
Cs-137 52.6 1.08 55 2 3.64 4.56 0.46 1.06 1.05 2.40 5.86 A 4.18 A A
Pb-210 259.5 12.53 238 17 7.14 -8.29 -0.83 -1.02 0.92 21.50 54.49 A 8.62 A A
Am-241 96.6 2.78 102 3 2.94 5.59 0.56 1.32 1.06 5.40 10.55 A 4.11 A A
Evaluation on Sample No. 2, Grass
Analyte IAEA Value
[Bq/kg d.m.]
IAEA Unc
[Bq/kg d.m.]
Lab Value
[Bq/kg d.m.]
Lab Unc
[Bq/kg d.m.]
Lab Unc
%
Rel. Bias
%
z-Score u-Test Ratio
Lab/IAEA
A1 A2 Trueness P(%) Precision Final Score
K-40 1059 28 1210 40 3.31 14.26 1.43 3.09 1.14 151.00 125.97 N 4.23 A W
Cs-137 11320 185 12500 400 3.20 10.42 1.04 2.68 1.10 1180.00 1137.03 N 3.59 A W
Evaluation on Sample No. 3, Water
Analyte IAEA Value
[Bq/kg]
IAEA Unc
[Bq/kg]
Lab Value
[Bq/kg]
Lab Unc
[Bq/kg]
Lab Unc
%
Rel. Bias
%
z-Score u-Test Ratio
Lab/IAEA
A1 A2 Trueness P(%) Precision Final Score
Mn-54 4.89 0.017 4.9 0.3 6.12 0.20 0.02 0.03 1.00 0.01 0.78 A 6.13 A A
Co-60 5.8 0.04 5.8 0.3 5.17 0.00 0.00 0.00 1.00 0.00 0.78 A 5.22 A A
Zn-65 7.27 0.075 7.6 0.6 7.89 4.54 0.45 0.55 1.05 0.33 1.56 A 7.96 A A
Cd-109 19.62 0.1 21 3 14.29 7.03 0.70 0.46 1.07 1.38 7.74 A 14.29 A A
Cs-134 13.03 0.1 12 1 8.33 -7.90 -0.79 -1.02 0.92 1.03 2.59 A 8.37 A A
Cs-137 16.72 0.08 16 1 6.25 -4.31 -0.43 -0.72 0.96 0.72 2.59 A 6.27 A A
Pb-210 9.55 0.15 4.7 0.7 14.89 -50.79 -5.08 -6.77 0.49 4.85 1.85 N 14.98 A N
Am-241 3.66 0.023 3.5 0.3 8.57 -4.37 -0.44 -0.53 0.96 0.16 0.78 A 8.59 A A
Appendix C, Page 29

The IAEA-CU-2006-04 ALMERA open proficiency test on the determination of gamma emitting radionuclides
Laboratory No. 336, COMISION CHILENA DE ENERGIA NUCLEAR, SANTIAGO, CHILE
Samples received on 2006-06-21, results submitted on
Evaluation on Sample No. 1, Soil Reference Date: 01-June-2006
Analyte IAEA Value
[Bq/kg d.m.]
IAEA Unc
[Bq/kg d.m.]
Lab Value
[Bq/kg d.m.]
Lab Unc
[Bq/kg d.m.]
Lab Unc
%
Rel. Bias
%
z-Score u-Test Ratio
Lab/IAEA
A1 A2 Trueness P(%) Precision Final Score
Mn-54 48 0.98 66 1.3 1.97 37.50 3.75 11.06 1.38 18.00 4.20 N 2.84 A N
Co-60 56.1 1.37 59.2 1.1 1.86 5.53 0.55 1.76 1.06 3.10 4.53 A 3.07 A A
Zn-65 77.6 2.54 78.1 2.2 2.82 0.64 0.06 0.15 1.01 0.50 8.67 A 4.32 A A
Cd-109 177.6 8.4 147.8 14.3 9.68 -16.78 -1.68 -1.80 0.83 29.80 42.79 A 10.77 A A
Cs-134 64.2 1.87 88.2 1.6 1.81 37.38 3.74 9.75 1.37 24.00 6.35 N 3.43 A N
Cs-137 52.6 1.08 68.6 1.3 1.90 30.42 3.04 9.47 1.30 16.00 4.36 N 2.79 A N
Pb-210 259.5 12.53
Am-241 96.6 2.78
Evaluation on Sample No. 2, Grass
Analyte IAEA Value
[Bq/kg d.m.]
IAEA Unc
[Bq/kg d.m.]
Lab Value
[Bq/kg d.m.]
Lab Unc
[Bq/kg d.m.]
Lab Unc
%
Rel. Bias
%
z-Score u-Test Ratio
Lab/IAEA
A1 A2 Trueness P(%) Precision Final Score
K-40 1059 28 1028.5 14 1.36 -2.88 -0.29 -0.97 0.97 30.50 80.77 A 2.97 A A
Cs-137 11320 185 12597.5 17.6 0.14 11.29 1.13 6.87 1.11 1277.50 479.46 N 1.64 A W
Evaluation on Sample No. 3, Water
Analyte IAEA Value
[Bq/kg]
IAEA Unc
[Bq/kg]
Lab Value
[Bq/kg]
Lab Unc
[Bq/kg]
Lab Unc
%
Rel. Bias
%
z-Score u-Test Ratio
Lab/IAEA
A1 A2 Trueness P(%) Precision Final Score
Mn-54 4.89 0.017 5.1 0.5 9.80 4.29 0.43 0.42 1.04 0.21 1.29 A 9.81 A A
Co-60 5.8 0.04 5.4 0.5 9.26 -6.90 -0.69 -0.80 0.93 0.40 1.29 A 9.28 A A
Zn-65 7.27 0.075 6.6 0.9 13.64 -9.22 -0.92 -0.74 0.91 0.67 2.33 A 13.68 A A
Cd-109 19.62 0.1 22.2 5.3 23.87 13.15 1.31 0.49 1.13 2.58 13.68 A 23.88 N W
Cs-134 13.03 0.1 13.2 0.7 5.30 1.30 0.13 0.24 1.01 0.17 1.82 A 5.36 A A
Cs-137 16.72 0.08 16.9 0.6 3.55 1.08 0.11 0.30 1.01 0.18 1.56 A 3.58 A A
Pb-210 9.55 0.15
Am-241 3.66 0.023
Appendix C, Page 30

The IAEA-CU-2006-04 ALMERA open proficiency test on the determination of gamma emitting radionuclides
Laboratory No. 338, KOZLODUY NUCLEAR POWER PLANT, KOZLODUY, BULGARIA
Samples received on 2006-06-21, results submitted on 2006-06-23
Evaluation on Sample No. 1, Soil Reference Date: 01-June-2006
Analyte IAEA Value
[Bq/kg d.m.]
IAEA Unc
[Bq/kg d.m.]
Lab Value
[Bq/kg d.m.]
Lab Unc
[Bq/kg d.m.]
Lab Unc
%
Rel. Bias
%
z-Score u-Test Ratio
Lab/IAEA
A1 A2 Trueness P(%) Precision Final Score
Mn-54 48 0.98 53.61 0.92 1.72 11.69 1.17 4.17 1.12 5.61 3.47 N 2.67 A W
Co-60 56.1 1.37 58.29 1.18 2.02 3.90 0.39 1.21 1.04 2.19 4.66 A 3.17 A A
Zn-65 77.6 2.54 88.38 1.89 2.14 13.89 1.39 3.40 1.14 10.78 8.17 N 3.91 A W
Cd-109 177.6 8.4
Cs-134 64.2 1.87 59.85 0.97 1.62 -6.78 -0.68 -2.06 0.93 4.35 5.44 A 3.33 A A
Cs-137 52.6 1.08 56.03 1.14 2.03 6.52 0.65 2.18 1.07 3.43 4.05 A 2.89 A A
Pb-210 259.5 12.53
Am-241 96.6 2.78 102.7 3.5 3.41 6.31 0.63 1.36 1.06 6.10 11.53 A 4.46 A A
Evaluation on Sample No. 2, Grass
Analyte IAEA Value
[Bq/kg d.m.]
IAEA Unc
[Bq/kg d.m.]
Lab Value
[Bq/kg d.m.]
Lab Unc
[Bq/kg d.m.]
Lab Unc
%
Rel. Bias
%
z-Score u-Test Ratio
Lab/IAEA
A1 A2 Trueness P(%) Precision Final Score
K-40 1059 28 1082 103 9.52 2.17 0.22 0.22 1.02 23.00 275.38 A 9.88 A A
Cs-137 11320 185 11324 204 1.80 0.04 0.00 0.01 1.00 4.00 710.51 A 2.43 A A
Evaluation on Sample No. 3, Water
Analyte IAEA Value
[Bq/kg]
IAEA Unc
[Bq/kg]
Lab Value
[Bq/kg]
Lab Unc
[Bq/kg]
Lab Unc
%
Rel. Bias
%
z-Score u-Test Ratio
Lab/IAEA
A1 A2 Trueness P(%) Precision Final Score
Mn-54 4.89 0.017 4.64 0.14 3.02 -5.11 -0.51 -1.77 0.95 0.25 0.36 A 3.04 A A
Co-60 5.8 0.04 5.57 0.16 2.87 -3.97 -0.40 -1.39 0.96 0.23 0.43 A 2.95 A A
Zn-65 7.27 0.075 7.47 0.27 3.61 2.75 0.28 0.71 1.03 0.20 0.72 A 3.76 A A
Cd-109 19.62 0.1 19.98 2 10.01 1.83 0.18 0.18 1.02 0.36 5.17 A 10.02 A A
Cs-134 13.03 0.1 12.29 0.24 1.95 -5.68 -0.57 -2.85 0.94 0.74 0.67 N 2.10 A W
Cs-137 16.72 0.08 17.06 0.32 1.88 2.03 0.20 1.03 1.02 0.34 0.85 A 1.94 A A
Pb-210 9.55 0.15
Am-241 3.66 0.023
Appendix C, Page 31

The IAEA-CU-2006-04 ALMERA open proficiency test on the determination of gamma emitting radionuclides
Laboratory No. 341, CENTRALE ELETTRONUCLEARE DI CAORSO, CAORSO, ITALY
Samples received on 2006-06-20, results submitted on 2006-06-26
Evaluation on Sample No. 1, Soil Reference Date: 01-June-2006
Analyte IAEA Value
[Bq/kg d.m.]
IAEA Unc
[Bq/kg d.m.]
Lab Value
[Bq/kg d.m.]
Lab Unc
[Bq/kg d.m.]
Lab Unc
%
Rel. Bias
%
z-Score u-Test Ratio
Lab/IAEA
A1 A2 Trueness P(%) Precision Final Score
Mn-54 48 0.98 54.352 1.046 1.92 13.23 1.32 4.43 1.13 6.35 3.70 N 2.81 A W
Co-60 56.1 1.37 57.255 0.82 1.43 2.06 0.21 0.72 1.02 1.16 4.12 A 2.83 A A
Zn-65 77.6 2.54 84.455 1.785 2.11 8.83 0.88 2.21 1.09 6.86 8.01 A 3.90 A A
Cd-109 177.6 8.4 284.8 12.273 4.31 60.36 6.04 7.21 1.60 107.20 38.37 N 6.40 A N
Cs-134 64.2 1.87 64.799 0.778 1.20 0.93 0.09 0.30 1.01 0.60 5.23 A 3.15 A A
Cs-137 52.6 1.08 57.064 1.097 1.92 8.49 0.85 2.90 1.08 4.46 3.97 N 2.81 A W
Pb-210 259.5 12.53 1411.9 294.13 20.83 444.08 44.41 3.91 5.44 1152.40 759.54 N 21.38 A N
Am-241 96.6 2.78 152.75 3.815 2.50 58.13 5.81 11.90 1.58 56.15 12.18 N 3.81 A N
Evaluation on Sample No. 2, Grass
Analyte IAEA Value
[Bq/kg d.m.]
IAEA Unc
[Bq/kg d.m.]
Lab Value
[Bq/kg d.m.]
Lab Unc
[Bq/kg d.m.]
Lab Unc
%
Rel. Bias
%
z-Score u-Test Ratio
Lab/IAEA
A1 A2 Trueness P(%) Precision Final Score
K-40 1059 28 1428.4 33.54 2.35 34.88 3.49 8.45 1.35 369.40 112.72 N 3.54 A N
Cs-137 11320 185 14247 131.71 0.92 25.86 2.59 12.89 1.26 2927.00 585.91 N 1.88 A N
Evaluation on Sample No. 3, Water
Analyte IAEA Value
[Bq/kg]
IAEA Unc
[Bq/kg]
Lab Value
[Bq/kg]
Lab Unc
[Bq/kg]
Lab Unc
%
Rel. Bias
%
z-Score u-Test Ratio
Lab/IAEA
A1 A2 Trueness P(%) Precision Final Score
Mn-54 4.89 0.017 6.343 0.588 9.27 29.71 2.97 2.47 1.30 1.45 1.52 A 9.28 A A
Co-60 5.8 0.04 6.437 0.344 5.34 10.98 1.10 1.84 1.11 0.64 0.89 A 5.39 A A
Zn-65 7.27 0.075 7.512 0.608 8.09 3.33 0.33 0.40 1.03 0.24 1.58 A 8.16 A A
Cd-109 19.62 0.1 32.312 4.989 15.44 64.69 6.47 2.54 1.65 12.69 12.87 A 15.45 A A
Cs-134 13.03 0.1 12.321 0.288 2.34 -5.44 -0.54 -2.33 0.95 0.71 0.79 A 2.46 A A
Cs-137 16.72 0.08 17.065 0.596 3.49 2.06 0.21 0.57 1.02 0.35 1.55 A 3.53 A A
Pb-210 9.55 0.15 91.8 48.8 53.16 861.26 86.13 1.69 9.61 82.25 125.90 A 53.18 N N
Am-241 3.66 0.023 5.81 1.049 18.06 58.74 5.87 2.05 1.59 2.15 2.71 A 18.07 A A
Appendix C, Page 34

The IAEA-CU-2006-04 ALMERA open proficiency test on the determination of gamma emitting radionuclides
Laboratory No. 342, SIA RADON, MOSCOW, RUSSIAN FEDERATION
Samples received on 2006-06-22, results submitted on 2006-06-26
Evaluation on Sample No. 1, Soil Reference Date: 01-June-2006
Analyte IAEA Value
[Bq/kg d.m.]
IAEA Unc
[Bq/kg d.m.]
Lab Value
[Bq/kg d.m.]
Lab Unc
[Bq/kg d.m.]
Lab Unc
%
Rel. Bias
%
z-Score u-Test Ratio
Lab/IAEA
A1 A2 Trueness P(%) Precision Final Score
Mn-54 48 0.98 49.6 1.6 3.23 3.33 0.33 0.85 1.03 1.60 4.84 A 3.82 A A
Co-60 56.1 1.37 55.5 2.1 3.78 -1.07 -0.11 -0.24 0.99 0.60 6.47 A 4.50 A A
Zn-65 77.6 2.54 75.2 2.8 3.72 -3.09 -0.31 -0.63 0.97 2.40 9.75 A 4.96 A A
Cd-109 177.6 8.4 87.3 17.8 20.39 -50.84 -5.08 -4.59 0.49 90.30 50.78 N 20.93 A N
Cs-134 64.2 1.87 62.5 1.6 2.56 -2.65 -0.26 -0.69 0.97 1.70 6.35 A 3.88 A A
Cs-137 52.6 1.08 55.3 2.1 3.80 5.13 0.51 1.14 1.05 2.70 6.09 A 4.32 A A
Pb-210 259.5 12.53 275 22 8.00 5.97 0.60 0.61 1.06 15.50 65.32 A 9.34 A A
Am-241 96.6 2.78 102 6 5.88 5.59 0.56 0.82 1.06 5.40 17.06 A 6.55 A A
Evaluation on Sample No. 2, Grass
Analyte IAEA Value
[Bq/kg d.m.]
IAEA Unc
[Bq/kg d.m.]
Lab Value
[Bq/kg d.m.]
Lab Unc
[Bq/kg d.m.]
Lab Unc
%
Rel. Bias
%
z-Score u-Test Ratio
Lab/IAEA
A1 A2 Trueness P(%) Precision Final Score
K-40 1059 28 983 55 5.60 -7.18 -0.72 -1.23 0.93 76.00 159.23 A 6.19 A A
Cs-137 11320 185 11850 370 3.12 4.68 0.47 1.28 1.05 530.00 1067.28 A 3.52 A A
Evaluation on Sample No. 3, Water
Analyte IAEA Value
[Bq/kg]
IAEA Unc
[Bq/kg]
Lab Value
[Bq/kg]
Lab Unc
[Bq/kg]
Lab Unc
%
Rel. Bias
%
z-Score u-Test Ratio
Lab/IAEA
A1 A2 Trueness P(%) Precision Final Score
Mn-54 4.89 0.017 5.24 0.2 3.82 7.16 0.72 1.74 1.07 0.35 0.52 A 3.83 A A
Co-60 5.8 0.04 6.05 0.26 4.30 4.31 0.43 0.95 1.04 0.25 0.68 A 4.35 A A
Zn-65 7.27 0.075 7.37 0.34 4.61 1.38 0.14 0.29 1.01 0.10 0.90 A 4.73 A A
Cd-109 19.62 0.1 29.8 2.5 8.39 51.89 5.19 4.07 1.52 10.18 6.46 N 8.40 A N
Cs-134 13.03 0.1 13.3 0.5 3.76 2.07 0.21 0.53 1.02 0.27 1.32 A 3.84 A A
Cs-137 16.72 0.08 18.5 0.6 3.24 10.65 1.06 2.94 1.11 1.78 1.56 N 3.28 A W
Pb-210 9.55 0.15 9.7 0.7 7.22 1.57 0.16 0.21 1.02 0.15 1.85 A 7.39 A A
Am-241 3.66 0.023 3.5 0.19 5.43 -4.37 -0.44 -0.84 0.96 0.16 0.49 A 5.46 A A
Appendix C, Page 35

The IAEA-CU-2006-04 ALMERA open proficiency test on the determination of gamma emitting radionuclides
Laboratory No. 344, NORWEGIAN RADIATION PROTECTION AUTHORITY, OSTERAS, NORWAY
Samples received on 2006-06-20, results submitted on 2006-06-23
Evaluation on Sample No. 1, Soil Reference Date: 01-June-2006
Analyte IAEA Value
[Bq/kg d.m.]
IAEA Unc
[Bq/kg d.m.]
Lab Value
[Bq/kg d.m.]
Lab Unc
[Bq/kg d.m.]
Lab Unc
%
Rel. Bias
%
z-Score u-Test Ratio
Lab/IAEA
A1 A2 Trueness P(%) Precision Final Score
Mn-54 48 0.98 50 2.5 5.00 4.17 0.42 0.74 1.04 2.00 6.93 A 5.40 A A
Co-60 56.1 1.37 58 2.9 5.00 3.39 0.34 0.59 1.03 1.90 8.27 A 5.56 A A
Zn-65 77.6 2.54 80 4 5.00 3.09 0.31 0.51 1.03 2.40 12.22 A 5.98 A A
Cd-109 177.6 8.4 245 12 4.90 37.95 3.80 4.60 1.38 67.40 37.79 N 6.81 A N
Cs-134 64.2 1.87 66 3 4.55 2.80 0.28 0.51 1.03 1.80 9.12 A 5.40 A A
Cs-137 52.6 1.08 54 3 5.56 2.66 0.27 0.44 1.03 1.40 8.23 A 5.92 A A
Pb-210 259.5 12.53
Am-241 96.6 2.78 78 5 6.41 -19.25 -1.93 -3.25 0.81 18.60 14.76 N 7.03 A W
Evaluation on Sample No. 2, Grass
Analyte IAEA Value
[Bq/kg d.m.]
IAEA Unc
[Bq/kg d.m.]
Lab Value
[Bq/kg d.m.]
Lab Unc
[Bq/kg d.m.]
Lab Unc
%
Rel. Bias
%
z-Score u-Test Ratio
Lab/IAEA
A1 A2 Trueness P(%) Precision Final Score
K-40 1059 28 1100 60 5.45 3.87 0.39 0.62 1.04 41.00 170.83 A 6.06 A A
Cs-137 11320 185 11800 600 5.08 4.24 0.42 0.76 1.04 480.00 1619.91 A 5.34 A A
Evaluation on Sample No. 3, Water
Analyte IAEA Value
[Bq/kg]
IAEA Unc
[Bq/kg]
Lab Value
[Bq/kg]
Lab Unc
[Bq/kg]
Lab Unc
%
Rel. Bias
%
z-Score u-Test Ratio
Lab/IAEA
A1 A2 Trueness P(%) Precision Final Score
Mn-54 4.89 0.017 4.5 0.23 5.11 -7.98 -0.80 -1.69 0.92 0.39 0.60 A 5.12 A A
Co-60 5.8 0.04 6.2 0.31 5.00 6.90 0.69 1.28 1.07 0.40 0.81 A 5.05 A A
Zn-65 7.27 0.075 8.1 0.41 5.06 11.42 1.14 1.99 1.11 0.83 1.08 A 5.17 A A
Cd-109 19.62 0.1 1.4 0.34 24.29 -92.86 -9.29 -51.41 0.07 18.22 0.91 N 24.29 N N
Cs-134 13.03 0.1 14 0.7 5.00 7.44 0.74 1.37 1.07 0.97 1.82 A 5.06 A A
Cs-137 16.72 0.08 18 0.9 5.00 7.66 0.77 1.42 1.08 1.28 2.33 A 5.02 A A
Pb-210 9.55 0.15
Am-241 3.66 0.023 3.9 0.5 12.82 6.56 0.66 0.48 1.07 0.24 1.29 A 12.84 A A
Appendix C, Page 36

The IAEA-CU-2006-04 ALMERA open proficiency test on the determination of gamma emitting radionuclides
Laboratory No. 347, ENEA, ISTITUTO DI RADIOPROTEZIONE, ROMA, ITALY
Samples received on 2006-06-20, results submitted on 2006-06-23
Evaluation on Sample No. 1, Soil Reference Date: 01-June-2006
Analyte IAEA Value
[Bq/kg d.m.]
IAEA Unc
[Bq/kg d.m.]
Lab Value
[Bq/kg d.m.]
Lab Unc
[Bq/kg d.m.]
Lab Unc
%
Rel. Bias
%
z-Score u-Test Ratio
Lab/IAEA
A1 A2 Trueness P(%) Precision Final Score
Mn-54 48 0.98 48.9 2.8 5.73 1.87 0.19 0.30 1.02 0.90 7.65 A 6.08 A A
Co-60 56.1 1.37 57.1 2.7 4.73 1.78 0.18 0.33 1.02 1.00 7.81 A 5.32 A A
Zn-65 77.6 2.54 77.8 4.9 6.30 0.26 0.03 0.04 1.00 0.20 14.24 A 7.10 A A
Cd-109 177.6 8.4 218 21.6 9.91 22.75 2.27 1.74 1.23 40.40 59.79 A 10.98 A A
Cs-134 64.2 1.87 57.7 2.6 4.51 -10.12 -1.01 -2.03 0.90 6.50 8.26 A 5.37 A A
Cs-137 52.6 1.08 50.8 3 5.91 -3.42 -0.34 -0.56 0.97 1.80 8.23 A 6.25 A A
Pb-210 259.5 12.53 221 54.7 24.75 -14.84 -1.48 -0.69 0.85 38.50 144.78 A 25.22 A A
Am-241 96.6 2.78 81.9 1.4 1.71 -15.22 -1.52 -4.72 0.85 14.70 8.03 N 3.35 A W
Evaluation on Sample No. 2, Grass
Analyte IAEA Value
[Bq/kg d.m.]
IAEA Unc
[Bq/kg d.m.]
Lab Value
[Bq/kg d.m.]
Lab Unc
[Bq/kg d.m.]
Lab Unc
%
Rel. Bias
%
z-Score u-Test Ratio
Lab/IAEA
A1 A2 Trueness P(%) Precision Final Score
K-40 1059 28 1090 161 14.77 2.93 0.29 0.19 1.03 31.00 421.61 A 15.01 A A
Cs-137 11320 185 12750 545 4.27 12.63 1.26 2.48 1.13 1430.00 1484.90 A 4.58 A A
Evaluation on Sample No. 3, Water
Analyte IAEA Value
[Bq/kg]
IAEA Unc
[Bq/kg]
Lab Value
[Bq/kg]
Lab Unc
[Bq/kg]
Lab Unc
%
Rel. Bias
%
z-Score u-Test Ratio
Lab/IAEA
A1 A2 Trueness P(%) Precision Final Score
Mn-54 4.89 0.017 5.5 0.4 7.27 12.47 1.25 1.52 1.12 0.61 1.03 A 7.28 A A
Co-60 5.8 0.04 6.3 0.3 4.76 8.62 0.86 1.65 1.09 0.50 0.78 A 4.81 A A
Zn-65 7.27 0.075 8 0.7 8.75 10.04 1.00 1.04 1.10 0.73 1.82 A 8.81 A A
Cd-109 19.62 0.1 20.2 2 9.90 2.96 0.30 0.29 1.03 0.58 5.17 A 9.91 A A
Cs-134 13.03 0.1 13.3 0.5 3.76 2.07 0.21 0.53 1.02 0.27 1.32 A 3.84 A A
Cs-137 16.72 0.08 18.8 0.9 4.79 12.44 1.24 2.30 1.12 2.08 2.33 A 4.81 A A
Pb-210 9.55 0.15 18.2 2.1 11.54 90.58 9.06 4.11 1.91 8.65 5.43 N 11.64 A N
Am-241 3.66 0.023 3.3 0.5 15.15 -9.84 -0.98 -0.72 0.90 0.36 1.29 A 15.16 A A
Appendix C, Page 37

The IAEA-CU-2006-04 ALMERA open proficiency test on the determination of gamma emitting radionuclides
Laboratory No. 348, BRAZILIAN NATIONAL COMMISSION OR NUCLEAR ENERGY, CNEN, POCOS DE CALDAS, BRAZIL
Samples received on 2006-06-26, results submitted on 2006-06-29
Evaluation on Sample No. 1, Soil Reference Date: 01-June-2006
Analyte IAEA Value
[Bq/kg d.m.]
IAEA Unc
[Bq/kg d.m.]
Lab Value
[Bq/kg d.m.]
Lab Unc
[Bq/kg d.m.]
Lab Unc
%
Rel. Bias
%
z-Score u-Test Ratio
Lab/IAEA
A1 A2 Trueness P(%) Precision Final Score
Mn-54 48 0.98 45.9 3.05 6.64 -4.38 -0.44 -0.66 0.96 2.10 8.27 A 6.95 A A
Co-60 56.1 1.37 48.7 3.13 6.43 -13.19 -1.32 -2.17 0.87 7.40 8.82 A 6.88 A A
Zn-65 77.6 2.54 70.5 5.49 7.79 -9.15 -0.91 -1.17 0.91 7.10 15.61 A 8.45 A A
Cd-109 177.6 8.4 179 36.09 20.16 0.79 0.08 0.04 1.01 1.40 95.60 A 20.71 A A
Cs-134 64.2 1.87 51.9 3.86 7.44 -19.16 -1.92 -2.87 0.81 12.30 11.07 N 7.99 A W
Cs-137 52.6 1.08 49.9 3.34 6.69 -5.13 -0.51 -0.77 0.95 2.70 9.06 A 7.00 A A
Pb-210 259.5 12.53 227.5 24.98 10.98 -12.33 -1.23 -1.15 0.88 32.00 72.10 A 11.99 A A
Am-241 96.6 2.78 87.2 7.25 8.31 -9.73 -0.97 -1.21 0.90 9.40 20.03 A 8.80 A A
Evaluation on Sample No. 2, Grass
Analyte IAEA Value
[Bq/kg d.m.]
IAEA Unc
[Bq/kg d.m.]
Lab Value
[Bq/kg d.m.]
Lab Unc
[Bq/kg d.m.]
Lab Unc
%
Rel. Bias
%
z-Score u-Test Ratio
Lab/IAEA
A1 A2 Trueness P(%) Precision Final Score
K-40 1059 28 1036.6 119.2 11.50 -2.12 -0.21 -0.18 0.98 22.40 315.91 A 11.80 A A
Cs-137 11320 185 11488.2 645.8 5.62 1.49 0.15 0.25 1.01 168.20 1733.18 A 5.85 A A
Evaluation on Sample No. 3, Water
Analyte IAEA Value
[Bq/kg]
IAEA Unc
[Bq/kg]
Lab Value
[Bq/kg]
Lab Unc
[Bq/kg]
Lab Unc
%
Rel. Bias
%
z-Score u-Test Ratio
Lab/IAEA
A1 A2 Trueness P(%) Precision Final Score
Mn-54 4.89 0.017 5.1 0.52 10.20 4.29 0.43 0.40 1.04 0.21 1.34 A 10.20 A A
Co-60 5.8 0.04 5.3 0.46 8.68 -8.62 -0.86 -1.08 0.91 0.50 1.19 A 8.71 A A
Zn-65 7.27 0.075 7.2 0.96 13.33 -0.96 -0.10 -0.07 0.99 0.07 2.48 A 13.37 A A
Cd-109 19.62 0.1 20.3 5.09 25.07 3.47 0.35 0.13 1.03 0.68 13.13 A 25.08 N W
Cs-134 13.03 0.1 11.4 0.94 8.25 -12.51 -1.25 -1.72 0.87 1.63 2.44 A 8.28 A A
Cs-137 16.72 0.08 16 1.09 6.81 -4.31 -0.43 -0.66 0.96 0.72 2.82 A 6.83 A A
Pb-210 9.55 0.15 11.5 2.89 25.13 20.42 2.04 0.67 1.20 1.95 7.47 A 25.18 A A
Am-241 3.66 0.023 3.6 0.46 12.78 -1.64 -0.16 -0.13 0.98 0.06 1.19 A 12.79 A A
Appendix C, Page 38

The IAEA-CU-2006-04 ALMERA open proficiency test on the determination of gamma emitting radionuclides
Laboratory No. 349, NATIONAL RADIATION PROTECTION DEPT., ATOMIC ENERGY OF IRAN, TEHRAN, IRAN, ISLAMIC REPUBLIC OF
Samples received on 2006-06-22, results submitted on 2006-06-26
Evaluation on Sample No. 1, Soil Reference Date: 01-June-2006
Analyte IAEA Value
[Bq/kg d.m.]
IAEA Unc
[Bq/kg d.m.]
Lab Value
[Bq/kg d.m.]
Lab Unc
[Bq/kg d.m.]
Lab Unc
%
Rel. Bias
%
z-Score u-Test Ratio
Lab/IAEA
A1 A2 Trueness P(%) Precision Final Score
Mn-54 48 0.98 47.83 3.35 7.00 -0.35 -0.04 -0.05 1.00 0.17 9.01 A 7.30 A A
Co-60 56.1 1.37 52.44 4.21 8.03 -6.52 -0.65 -0.83 0.93 3.66 11.42 A 8.39 A A
Zn-65 77.6 2.54 71.32 6.14 8.61 -8.09 -0.81 -0.95 0.92 6.28 17.14 A 9.21 A A
Cd-109 177.6 8.4 258.42 30.25 11.71 45.51 4.55 2.57 1.46 80.82 81.00 A 12.63 A A
Cs-134 64.2 1.87 64.14 3.94 6.14 -0.09 -0.01 -0.01 1.00 0.06 11.25 A 6.80 A A
Cs-137 52.6 1.08 55.17 3.38 6.13 4.89 0.49 0.72 1.05 2.57 9.15 A 6.46 A A
Pb-210 259.5 12.53
Am-241 96.6 2.78 63.11 9.46 14.99 -34.67 -3.47 -3.40 0.65 33.49 25.44 N 15.26 A N
Evaluation on Sample No. 2, Grass
Analyte IAEA Value
[Bq/kg d.m.]
IAEA Unc
[Bq/kg d.m.]
Lab Value
[Bq/kg d.m.]
Lab Unc
[Bq/kg d.m.]
Lab Unc
%
Rel. Bias
%
z-Score u-Test Ratio
Lab/IAEA
A1 A2 Trueness P(%) Precision Final Score
K-40 1059 28 1378.53 115.26 8.36 30.17 3.02 2.69 1.30 319.53 306.02 N 8.77 A N
Cs-137 11320 185 14619.47 730.32 5.00 29.15 2.91 4.38 1.29 3299.47 1943.74 N 5.26 A N
Evaluation on Sample No. 3, Water
Analyte IAEA Value
[Bq/kg]
IAEA Unc
[Bq/kg]
Lab Value
[Bq/kg]
Lab Unc
[Bq/kg]
Lab Unc
%
Rel. Bias
%
z-Score u-Test Ratio
Lab/IAEA
A1 A2 Trueness P(%) Precision Final Score
Mn-54 4.89 0.017 4.41 0.31 7.03 -9.82 -0.98 -1.55 0.90 0.48 0.80 A 7.04 A A
Co-60 5.8 0.04 5.56 0.41 7.37 -4.14 -0.41 -0.58 0.96 0.24 1.06 A 7.41 A A
Zn-65 7.27 0.075 6.12 0.51 8.33 -15.82 -1.58 -2.23 0.84 1.15 1.33 A 8.40 A A
Cd-109 19.62 0.1 10.51 1.33 12.65 -46.43 -4.64 -6.83 0.54 9.11 3.44 N 12.66 A N
Cs-134 13.03 0.1 10.71 0.75 7.00 -17.81 -1.78 -3.07 0.82 2.32 1.95 N 7.04 A W
Cs-137 16.72 0.08 14.68 1.02 6.95 -12.20 -1.22 -1.99 0.88 2.04 2.64 A 6.96 A A
Pb-210 9.55 0.15
Am-241 3.66 0.023 3.15 0.52 16.51 -13.93 -1.39 -0.98 0.86 0.51 1.34 A 16.52 A A
Appendix C, Page 39

The IAEA-CU-2006-04 ALMERA open proficiency test on the determination of gamma emitting radionuclides
Laboratory No. 351, UKRAINIAN HYDROMETEOROLOGICAL INSTITUTE, KIEV, UKRAINE
Samples received on 2006-06-23, results submitted on 2006-06-28
Evaluation on Sample No. 1, Soil Reference Date: 01-June-2006
Analyte IAEA Value
[Bq/kg d.m.]
IAEA Unc
[Bq/kg d.m.]
Lab Value
[Bq/kg d.m.]
Lab Unc
[Bq/kg d.m.]
Lab Unc
%
Rel. Bias
%
z-Score u-Test Ratio
Lab/IAEA
A1 A2 Trueness P(%) Precision Final Score
Mn-54 48 0.98 49.9 3.7 7.41 3.96 0.40 0.50 1.04 1.90 9.88 A 7.69 A A
Co-60 56.1 1.37 53 4.5 8.49 -5.53 -0.55 -0.66 0.94 3.10 12.14 A 8.83 A A
Zn-65 77.6 2.54 69.8 5.3 7.59 -10.05 -1.01 -1.33 0.90 7.80 15.16 A 8.27 A A
Cd-109 177.6 8.4 220.7 16.3 7.39 24.27 2.43 2.35 1.24 43.10 47.31 A 8.77 A A
Cs-134 64.2 1.87 64.9 5.1 7.86 1.09 0.11 0.13 1.01 0.70 14.01 A 8.38 A A
Cs-137 52.6 1.08 51.4 3.5 6.81 -2.28 -0.23 -0.33 0.98 1.20 9.45 A 7.11 A A
Pb-210 259.5 12.53 253.3 18.6 7.34 -2.39 -0.24 -0.28 0.98 6.20 57.86 A 8.79 A A
Am-241 96.6 2.78 90.2 6.6 7.32 -6.63 -0.66 -0.89 0.93 6.40 18.48 A 7.86 A A
Evaluation on Sample No. 2, Grass
Analyte IAEA Value
[Bq/kg d.m.]
IAEA Unc
[Bq/kg d.m.]
Lab Value
[Bq/kg d.m.]
Lab Unc
[Bq/kg d.m.]
Lab Unc
%
Rel. Bias
%
z-Score u-Test Ratio
Lab/IAEA
A1 A2 Trueness P(%) Precision Final Score
K-40 1059 28 897 110 12.26 -15.30 -1.53 -1.43 0.85 162.00 292.85 A 12.54 A A
Cs-137 11320 185 10930 610 5.58 -3.45 -0.34 -0.61 0.97 390.00 1644.59 A 5.82 A A
Evaluation on Sample No. 3, Water
Analyte IAEA Value
[Bq/kg]
IAEA Unc
[Bq/kg]
Lab Value
[Bq/kg]
Lab Unc
[Bq/kg]
Lab Unc
%
Rel. Bias
%
z-Score u-Test Ratio
Lab/IAEA
A1 A2 Trueness P(%) Precision Final Score
Mn-54 4.89 0.017 5.01 0.38 7.58 2.45 0.25 0.32 1.02 0.12 0.98 A 7.59 A A
Co-60 5.8 0.04 5.94 0.38 6.40 2.41 0.24 0.37 1.02 0.14 0.99 A 6.43 A A
Zn-65 7.27 0.075 8.31 0.61 7.34 14.31 1.43 1.69 1.14 1.04 1.59 A 7.41 A A
Cd-109 19.62 0.1 20.1 1.4 6.97 2.45 0.24 0.34 1.02 0.48 3.62 A 6.98 A A
Cs-134 13.03 0.1 13.3 1.12 8.42 2.07 0.21 0.24 1.02 0.27 2.90 A 8.46 A A
Cs-137 16.72 0.08 17.2 1.21 7.03 2.87 0.29 0.40 1.03 0.48 3.13 A 7.05 A A
Pb-210 9.55 0.15 9.1 0.71 7.80 -4.71 -0.47 -0.62 0.95 0.45 1.87 A 7.96 A A
Am-241 3.66 0.023 3.29 0.21 6.38 -10.11 -1.01 -1.75 0.90 0.37 0.55 A 6.41 A A
Appendix C, Page 40

Appendix D: List of participating laboratories

AUSTRALIA
LAB CODE 297
RADIOANALYTICAL SERVICES
AUSTRALIAN RADIATION PROTECTION AND
NUCLEAR SAFETY AGENCY (ARPANSA)
LOWER PLENTY ROAD 619
YALLAMBIE, VICTORIA 3085
AUSTRALIA
BELGIUM
LAB CODE 294
NUCLEAR SPECTROMETRY
STUDIECENTRUM VOOR KERNENERGIE
CENTRE D ETUDE DE L ENERGIE NUCLEAIRE
BOERETANG 200
B-2400, MOL
BELGIUM
BRAZIL
LAB CODE 348
LABORATORIO DE POCOS DE CALDAS
BRAZILIAN NATIONAL COMMISSION
FOR NUCLEAR ENERGY - CNEN
POCOS DE CALDAS LABORATORY (RADON LAB)
RODOVIA POCOS DE CALDAS-ANDRADAS
BR-37701-000, POCOS DE CALDAS, MG
BRAZIL
BULGARIA
LAB CODE 338
LABORATORY OF MEASUREMENT OF RADIO-
ACTIVITY
KOZLODUY NUCLEAR POWER PLANT
KOZLODUY, 3321
BULGARIA
CHILE
LAB CODE 336
SECCION VIGILANCIA
RADIOALOGICA AMBIENTAL
COMISION CHILENA DE ENERGIA NUCLEAR
AMUNATEGUI 95
CASILLA 188-D
6500687, SANTIAGO
CHILE
DENMARK
LAB CODE 292
RADIATION RESEARCH DEPARTMENT
RISOE NATIONAL LABORATORY
FREDERIKSBORGVEJ, 399
DK-4000, ROSKILDE
DENMARK
Appendix D, Page 1
Appendix D: List of participants

GERMANY
LAB CODE 291
ENVIRONMENTAL RADIOACTIVITY
PHYSIKALISCH-TECHNISCHE BUNDESANSTALT
BUNDESALLEE 100
D-38116, BRAUNSCHWEIG
GERMANY
GREECE
LAB CODE 335
NUCLEAR ENGINEERING DEPARTMENT
SCHOOL OF MECHANICAL ENGENEERING,
NATIONAL UNIVERSITY OF ATHENS
NATIONAL TECHNICAL UNIVERSITY
OF ATHENS
IROOU POLYTECHNEIOU 9
POLYTECHNIOUPOLI
15780, ATHENS
GREECE
HUNGARY
LAB CODE 304
RADIOCHEMISTRY DEPARTMENT
NATIONAL FOOD INVESTIGATION INSTITUTE
FOGOLY U. 13 - 15
H-1182, BUDAPEST
HUNGARY
INDIA
LAB CODE 321
ENVIRONMENTAL SURVEY LABORATORY
HEALTH PHYSICS DIVISION
TAPS COLONY, TAPP
TARAPUR ATOMIC POWER STATION
VIA BOISAR
PALGHAR (TALUG), THANE DISTRICT
TARAPUR, 401 504
MAHARASHTRA
INDIA
IRAN, ISLAMIC REPUBLIC OF
LAB CODE 349
NATIONAL RADIATION PROTECTION DEPT.
ATOMIC ENERGY ORGANISATION OF IRAN
NORTH KAREGAR ST, 14155 - 4494
P.O. BOX 14155-1339
14374, TEHRAN
IRAN, ISLAMIC REPUBLIC OF
ITALY
LAB CODE 305
LABORATORIO AMBIENTALE
CENTRALE ELETTRONUCLEARE DI TRINO
SO.G.I.N LABORATORIES
STRADE STATALE 31 BIS
13039, TRINO
VERCELLI
ITALY
Appendix D, Page 2
LAB CODE 327
CENTER FOR ADVANCED TECHNOLOGIC. AND
ENVIRONMENTAL TRAINING
RESEARCH CENTER KARLSRUHE
POSTFACH 3640
D-76021, KARLSRUHE
GERMANY
LAB CODE 319
RIS LAB - SETTORE RADIOATTIVITA ARTIFICIALE
APAT (ENVIRONMENTAL PROTECTION AGENCY)
VIA DI CASTEL ROMANO, 100
00128, ROME
ITALY

LAB CODE 341
CENTRALE ELETTRONUCLEARE DI CAORSO
SO.G.I.N LABORATORIES
VIA ENRICO FERMI, FRAZIONE ZERBI
29012, CAORSO
PIACENZA
ITALY
LAB CODE 311
ISTITUTO DI RADIOPROTEZIONE
LABORATORIO SALUGGIA
ENEA RESEARCH CENTRE
STRADA PER CRESCENTINO
I-13040, SALUGGIA (VERCELLI)
ITALY
JORDAN
LAB CODE 318
JORDAN ATOMIC ENERGY COMMISSION
SHAFA BADRAN
AMMAN, 11934
JORDAN
LEBANON
LAB CODE 325
RADIOACTIVE ANALYSIS LABORATORY
LEBANESE ATOMIC ENERGY COMMISSION
RIAD EL SOHL 1107 2260
P.O. BOX 11-8281
BEIRUT
LEBANON
LITHUANIA, REPUBLIC OF
LAB CODE 332
ENVIRONMENTAL PROTECTION AGENCY
RADIOLOGICAL LABORATORY
RUDNIOS 6, 504KB
LT-09300, VILNIUS
LITHUANIA, REPUBLIC OF
MALAYSIA
LAB CODE 308
RADIOCHEMISTRY AND ENVIRONMENT GROUP
MALAYSIAN INSTITUTE FOR NUCLEAR
TECHNOLOGY RESEARCH (MINT)
BANGI, 43000, KAJANG, SELANGOR D.E.,
MALAYSIA
THE NETHERLANDS
LAB CODE 314
LABORATORY FOR RADIATION RESEARCH
RIVM
ANTONIE VAN LEEUWENHOEKLAAN 9
NL-3720 BA, BILTHOVEN
THE NETHERLANDS
Appendix D, Page 3
LAB CODE 331
ENEA
ISTITUTO DI RADIOPROTEZIONE
LABORATORIO TRISAIA
STRADA STATALE IONICA 106, KM 419,5
I-75026, ROTONDELLA
MATERA
ITALY
LAB CODE 347
ENEA
ISTITUTO DI RADIOPROTEZIONE
LABORATORIO CASACCIA
VIA ANGUILLARESE 301
I-00060, SANTA MARIA DI GALERIA
ROMA
ITALY

NORWAY
LAB CODE 303
HEALTH & SAFETY DEPARTMENT
INSTITUTE FOR ENERGY TECHNOLOGY
INSTITUTTVEIEN 18
N-2027, KJELLER
NORWAY
NEW ZEALAND
LAB CODE 300
NATIONAL RADIATION LABORATORY
108 VICTORIA ST.
CHRISTCHURCH
NEW ZEALAND
PORTUGAL
LAB CODE 334
INSTITUTO TECNOLOGICO E NUCLEAR/DEP. DE
PROTECTO RADIOLOGICA E SEGURANTA NUCLEAR
E.N. 10, APARTADO 21
2686-953 SACAV?M
PORTUGAL
ROMANIA
LAB CODE 347
RADIATION PROTECTION
ENVIRONMENTAL PROTECTION & CIVIL
PRPTECTION
LABORATORY
INSTITUTE FOR NUCLEAR RESEARCH
CAMPULUI STREET, 1
R-115400, PITESTI
ROMANIA
RUSSIAN FEDERATION
LAB CODE 342
RADIOCHEMICAL LABORATORY
SIA RADON
7TH ROSTOVSKY LN., 2/14
119121, MOSCOW
RUSSIAN FEDERATION
SLOVENIA
LAB CODE 306
LABORATORY FOR RADIOLOGICAL MEASURING
SYSTEMS AND RADIOACTIVITY
INSTITUTE JOZEF STEFAN
JAMOVA 39
SI-1000, LJUBLJANA
SLOVENIA
Appendix D, Page 4
LAB CODE 344
DEPARTMENT OF ENVIRONMENTAL PROTECTION
NORWEGIAN RADIATION PROTECTION AUTHORITY
GRINI NAERINGSPARK 13
P.O.BOX 55
N-1332, OSTERAS
NORWAY

SLOVAK REPUBLIC
LAB CODE 307
ENVIRONMENTAL LABORATORY DEPARTMENT
NUCLEAR POWER PLANT MOCHOVCE
SLOVAK ELECTRIC, PLC.
KOMENSKEHO 3
SK-935 23, LEVICE
SLOVAK REPUBLIC
SYRIAN ARAB REPUBLIC
LAB CODE 313
DEPARTMENT OF RADIATION PROTECTION
ATOMIC ENERGY COMMISSION OF SYRIA
DAMASCUS
SYRIAN ARAB REPUBLIC
UNITED KINGDOM
LAB CODE 298
WATER, LAND & SAFETY SERVICES
CUSTOMER SERVICE MANAGER
LGC LIMITED
QUEENS ROAD
TEDDINGTON, TW11 0LY
MIDDLESEX
UNITED KINGDOM
UKRAINE
LAB CODE 351
ENVIRONMENTAL RADIATION MONITORING
DEPARTMENT
RADIOCHEMISTRY AND SPECTROMETRY
LABORATORY
UKRAINIAN HYDROMETEOROLOGICAL
INSTITUTE
PROSPECT NAUKI, 37
KIEV-28, 03028
UKRAINE
UNITED STATES OF AMERICA
LAB CODE 315
NONPROLIFERATION TECHNOLOGIES SECTION
SAVANNAH RIVER TECHNOLOGY CENTER
WESTINGHOUSE SAVANNAH RIVER CO.
BUILDING 773-A
P.O. BOX 616
AIKEN, SC 29808
UNITED STATES OF AMERICA
MONTENEGRO
LAB CODE 322
RADIATION PROTECTION AND
MONITORING DEPARTMENT
CENTER FOR ECOTOXICOLOGICAL RESEARCHES OF
MONTENEGRO
PUT RADOMIRA IVANOVICA 2
YU-81000, PODGORICA
MONTENEGRO
Appendix D, Page 5
LAB CODE 310
LABORATORY OF RADIATION CONTROL
NUCLEAR POWER PLANT BOHUNICE
SK-919 31, JASLOVSKE BOHUNICE
SLOVAK REPUBLIC
LAB CODE 296
CENTRE FOR ENVIRONMENT,
FISHERIES AND AQUACULTURE SCIENCE
PAKEFIELD ROAD
LOWESTOFT, NR33 0HT
SUFFOLK
UNITED KINGDOM