국내 원자력발전소 잡고체폐기물의 예측방사능량과 실측방사능량의 비교분석 = Comparison of Radionuclide Inventory Between Predicted and Measured Activity of Dry Active Waste From Korea Nuclear Power Plant

다국어 초록 (Multilingual Abstract)

The inventory management of radionuclides is essential for the safe management of disposal facilities. In this study, we compared the activity of dry active waste predicted using the generated waste data and that measured for the accepted waste in the disposal facility. For very low level waste, the measured activity was higher than the predicted activity for 137Cs, 90Sr, 99Tc and 129I. In low level waste, the predicted activity was higher than the measured activity for all radionuclides. We also evaluated the variation in the predicted quantity and total activity of each level of dry active waste through a sensitivity analysis on a scaling factor. This result will contribute to the construction of a Safety Case and safe operation of disposal facilities.

국문 초록 (Abstract)

핵종재고량 관리는 처분시설의 안전한 관리를 위해서는 필수적이다. 본 논문에서는 원자력발전소의 잡고체폐기물에 대하여 기존 발생된 폐기물 자료를 반영한 예측방사능량과 실제 처분시설을 운영하면서 인수되어 처분검사까지 완료된 실제방사능량을 비교분석하였다. 극저준위방사성폐기물에서는 137CS, 90Sr, 99Tc 그리고 129I 핵종이 예측방사능량보다 실제방사능량이 높게 평가되었으며, 저준위방사성폐기물에서는 모든 핵종에서 예측방사능량이 실제 방사능량보다 높게 평가되었다. 또한 척도인자에 의한 예측방사능량의 민감도 분석을 통해 준위별 수량 및 총방사능량의 변화추이를 분석하였다. 향후 중저준위방사성폐기물 처분시설의 안전한 운영과 Safety Case 구축을 위한 기초자료로 활용될 것으로 판단된다.

참고문헌 (Reference)

• 1 정강일, "우리나라 중・저준위 방사성폐기물 처분시설 종합개발계획(안)과 예비안전성평가" 한국방사성폐기물학회 14 (14): 385-410, 2016
• 2 정강일, "방사성폐기물 신분류기준을 고려한 중저준위 방사성폐기물 처분시설의 핵종재고량 예측" 한국방사성폐기물학회 14 (14): 63-78, 2016
• 3 International Organization for Standardization, "The Scaling Factor Method Determine the Radioactivity of Low- and Intermediate- Level Radioactive Waste Packages Generated at Nuclear Power Plant"
• 4 Korea Hydro and Nuclear Power Co., Ltd, "Surface Dose of Low- and Intermediate-Level Radioactive Waste"
• 5 Korea Radioactive Waste Agency, "Management plan for Low- and Intermediate- Level Radioactive Waste"
• 6 Korea Hydro and Nuclear Power Co., Ltd, "Development of a Computer Program for Evaluating Radioisotope Inventory of Radioactive Waste from Nuclear Plants : Appendix 2:User Guide"
• 7 Nuclear Safety and Security Commission, "Criteria for Disposal Inspection of Low- and intermediate Level Radioactive Waste"
• 8 Korea Radioactive Waste Agency, "Activity of Approved Radioactive Waste from Disposal Inspection"
• 9 Nuclear Safety and Security Commission, "Acceptance Criteria for Low- and intermediate- Level Radioactive Waste"