IAEA Review of Safety Related Aspects of Handling ALPS-Treated Water at TEPCO’s Fukushima Daiichi Nuclear Power Station : First Interlaboratory Comparison on the Determination of Radionuclides in ALPS Treated Water
(도쿄전력의 후쿠시마 원전에서 ALPS 처리수 취급 안전에 관한 IAEA 검토 보고서 : ALPS 처리수 내 방사성 핵종 결정에 대한 첫 번째 실험실 간 비교)
목차
EXECUTIVE SUMMARY I
1. INTRODUCTION 1
1.1. BACKGROUND 1
1.2. OBJECTIVE 2
1.3. SCOPE 2
1.4. STRUCTURE 2
2. DESIGN AND PARTICIPATING LABORATORIES 4
2.1. DESIGN 4
2.2. PARTICIPATING LABORATORIES 6
3. COLLECTION AND PREPARATION OF ALPS TREATED WATER SAMPLES 10
4. ANALYTICAL METHODS 11
4.1. GENERAL PRE-TREATMENT OF THE ALPS TREATED WATER SAMPLE 11
4.2. GAMMA-EMITTING RADIONUCLIDE ANALYSES (54MN, 60CO, 106RU, 125SB, 129I, 134CS, 137CS, 144CE, 154EU, 155EU, 241AM) 11
4.3. 129I ANALYSIS 12
4.4. 3H ANALYSIS 12
4.5. 14C ANALYSIS 12
4.6. 90SR ANALYSIS 13
4.7. 55FE ANALYSIS 13
4.8. 63NI ANALYSIS 13
4.9. 99TC ANALYSIS 13
4.10. 79SE ANALYSIS 13
4.11. GROSS ALPHA ANALYSIS 14
4.12. ALPHA-EMITTING RADIONUCLIDE ANALYSIS 14
4.13. ADDITIONAL RADIONUCIDES IN TEPCO’S SOURCE TERM 14
5. STATISTICAL EVALUATION OF THE RESULTS 16
6. RESULTS 19
6.1. GENERAL 19
6.1.1. Uncertainties, confidence intervals and rounding 19
6.1.2. Reference date 19
6.2. RESULTS REPORTED 20
6.3. 𝜁 (ZETA) SCORES 22
6.4. POMPLOTS 23
6.5. ADDITIONAL RESULTS REPORTED 29
7. CONCLUSION 32
7.1. QUANTITATIVE INTERCOMPARISON OF REPORTED ACTIVITY CONCENTRATIONS 32
7.2. ASSESSMENT OF REPORTED DETECTION LIMITS 34
7.3. ADDITIONAL RADIONUCLIDES 35
7.4. KEY FINDINGS 36
APPENDIX I: INSTRUCTIONS SENT TO PARTICIPATING LABORATORIES 38
APPENDIX II: STATISTICAL EVALUATION METHODOLOGY 39
APPENDIX III: CHARTS OF ACTIVITY CONCENTRATIONS AND DETECTION LIMITS 42
REFERENCES 55
CONTRIBUTORS TO DRAFTING AND REVIEW 59
