Worldwide Open Proficiency Test: Determination of ... - Nucleus - IAEA

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In general, it can be noticed that after three runs of the world wide proficiency test the overall performance of the gamma spectrometry community in determination of Co-60, Cs-134 and Cs-137 has been improved not only in terms of better trueness and commutability (comparability), but also in terms of smaller and more realistically estimated measurement results uncertainties. Figures 16 and 17 demonstrate the observed improvement. Difference S2-S4 (%) Difference S2-S4 (%) Difference S2-S4 (%) 100 90 80 70 60 50 40 30 20 10 0 -10 -20 -30 -40 -50 -60 -70 -80 -90 -100 100 90 80 70 60 50 40 30 20 10 0 -10 -20 -30 -40 -50 -60 -70 -80 -90 -100 -110 100 90 80 70 60 50 40 30 20 10 0 -10 -20 -30 -40 -50 -60 -70 -80 -90 -100 -110 Draft, page 28 Difference between reported results for Co-57 in samples 02 and 04 Lab code Difference between reported results for Co-60 in samples 02 and 04 Lab code Difference between reported results for Cs-134 in samples 02 and 04 Lab code Figures 11, 12 and 13: Difference between reported results for Co-57, Co-60 and Cs-134 in the duplicate samples 02 and 04
Difference S2-S4 (%) Difference S2-S4 (%) 100 90 80 70 60 50 40 30 20 10 0 -10 -20 -30 -40 -50 -60 -70 -80 -90 -100 -110 100 90 80 70 60 50 40 30 20 10 0 -10 -20 -30 -40 -50 -60 -70 -80 -90 -100 -110 Difference between reported results for Cs-137 in samples 02 and 04 Lab code Difference between reported results for Eu-152 in samples 02 and 04 Lab code Figures 14 and 15: Difference between reported results for Cs-137 and Eu-152 in the duplicate samples 02 and 04 Final Darft, page 29
Page 1 and 2: IAEA Analytical Quality in Nuclear
Page 3 and 4: FOREWORD A reliable determination o
Page 5 and 6: 1. INTRODUCTION A reliable determin
Page 7 and 8: 2.1. Proficiency test objectives 2.
Page 9 and 10: To confirm the assigned target valu
Page 11 and 12: program achieving complete sample d
Page 13 and 14: 2.3.4.3. Determination of U-234, U-
Page 15 and 16: AlphaCounts per channel 2000 1500 1
Page 17 and 18: 3. PERFORMANCE CRITERIA Several rat
Page 19 and 20: acceptable”, a further check is a
Page 21 and 22: TABLE 4. SUMMARY EVALUATION OF ALL
Page 23 and 24: Lab. code Number of reported Scored
Page 29: 4.2. General recommendations and le
Page 33 and 34: 4.4. Recommendations related to the
Page 35 and 36: [Bq/kg] 70 60 50 40 30 20 10 0 Ra-2
Page 37 and 38: Figure 22: Part of the Thorium radi
Page 39 and 40: 5. CONCLUSIONS The IAEA-CU-2009-03
Page 41 and 42: REFERENCES [1] DUEWER, D.L., A Robu
Page 43 and 44: APPENDIX I: PERFORMANCE EVALUATION
Page 45 and 46: Lab code Rep. Value Rep. Unc. Unc.
Page 67 and 68: [Bq/kg] 650 575 500 425 350 275 200
Page 69 and 70: [Bq/kg] 650 600 550 500 450 400 350
Page 71 and 72: [ B q /k g ] 70 60 50 40 30 20 10 L
Page 81 and 82:
Lab code Rep. Value Rep. Unc. Unc.
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[Bq] 50 45 40 35 30 25 20 15 10 120
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[Bq/kg] 60 50 40 30 20 10 0 25 223
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[ B q /k g ] 60 50 40 30 20 10 0 72
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[Bq/kg] 15 13 11 9 7 5 3 1 74 131 2
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[Bq/kg] 45 41 37 33 29 25 21 17 13
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[Bq/kg ] 19 17 15 13 11 9 7 5 3 286
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[Bq/kg] 19 17 15 13 11 9 7 5 3 1 25
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[ B q /k g ] 5.5 5 4.5 4 3.5 3 2.5
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[ B q /k g ] 3.5 3.0 2.5 2.0 1.5 1.
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[Bq /kg ] 8.5 7.5 6.5 5.5 4.5 3.5 2
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[Bq/kg] 7.5 6.5 5.5 4.5 3.5 2.5 1.5
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[B q /k g ] 13 11 9 7 5 3 1 515 26
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[Bq /kg ] 11 9 7 5 3 1 219 250 233
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[Bq/kg] 13 11 9 7 5 3 1 273 5264 26
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APPENDIX II: LIST OF PARTICIPATING
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Dr. Victor Badulin Public Exposure
Page 229 and 230:
Dr. David Lobb Department of Soil S
Page 231 and 232:
Petr Rulik Monitoring Department Na
Page 233 and 234:
Mr. Benoit Daniel Eichrom Europe Ru
Page 235 and 236:
Prof. Dr. Constantin Papastefanou A
Page 237 and 238:
Mr. A.G. Hegde Health Physics Divis
Page 239 and 240:
Mr. Mario Montalto Istituto Di Radi
Page 241 and 242:
Mr. Samer J. Al-Kharouf Radiation P
Page 243 and 244:
Ms. Snezana Dimovska Radioecology R
Page 245 and 246:
Dr. Andrzej Komosa Department of Ra
Page 247 and 248:
Ms. Ana-Maria Apostu Dept. of Life
Page 249 and 250:
Mr. Peter Jovanovic Department of P
Page 251 and 252:
Dr. Catalina Gasco Leonarte Ed. 3a
Page 253 and 254:
Dra. Montserrat Llaurado Departamen
Page 255 and 256:
Mr. Abdullah Dirican Turkish Atomic
Page 257 and 258:
Dr. Paul Smedley Centre For Environ
Page 259 and 260:
Mr. Kevin T. Claver Environmental A
Page 261 and 262:
259
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