결정론적 및 확률론적 방법을 이용한 방사성폐기물 운반 위험도평가 비교 . 분석
Comparison of Radioactive Waste Transportation Risk Assessment Using Deterministic and Probabilistic Methods
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When assessing the risk of radioactive wastes transportation on land, computer codes suchas RADTRAN and RISKIND are used as deterministic methods. Transportation risk assessment usingthe deterministic method requires a relatively short assessment time. On the other hand, transportationrisk assessment using the probabilistic method requires a relatively long assessment time, but producesmore reliable results. Therefore, a study is needed to evaluate the exposure dose using a deterministicmethod that can be evaluated relatively quickly, and to compare and analyze the exposure doseresult using a probabilistic method. The purpose of this study is to evaluate the exposure dose duringtransportation of radioactive wastes using deterministic and probabilistic methods, and to compare andanalyze them. For this purpose, the main exposure factors were selected and various exposure situationswere set. The distance between the radioactive waste and the receptor, the size of the package, and thespeed of vehicle were selected as the main exposure factors. The exposure situation was largely dividedinto when the radioactive wastes were stationary and when they were passing. And the dose (rate) modelof the deterministic overland transportation risk assessment computer code was analyzed. Finally,the deterministic method of the RADTRAN computer code and the RISKIND computer code and theprobabilistic method of the MCNP 6 computer code were used to evaluate the exposure dose in variousexposure situations during transportation of radioactive wastes. Then we compared and analyzed them. As a result of the evaluation, the tendency of the exposure dose (rate) was similar when the radioactivewastes were stationary and passing. For the same situation, the evaluation results of the RADTRANcomputer code were generally more conservative than the results of the RISKIND computer code andthe MCNP 6 computer code. The evaluation results of the RISKIND computer code and the MCNP 6computer code were relatively similar. The results of this study are expected to be used as basic data forestablishing the radioactive wastes transportation risk assessment system in Korea in the future.
Abstract
When assessing the risk of radioactive wastes transportation on land, computer codes suchas RADTRAN and RISKIND are used as deterministic methods. Transportation risk assessment usingthe deterministic method requires a relatively short assessment time. On the other hand, transportationrisk assessment using the probabilistic method requires a relatively long assessment time, but producesmore reliable results. Therefore, a study is needed to evaluate the exposure dose using a deterministicmethod that can be evaluated relatively quickly, and to compare and analyze the exposure doseresult using a probabilistic method. The purpose of this study is to evaluate the exposure dose duringtransportation of radioactive wastes using deterministic and probabilistic methods, and to compare andanalyze them. For this purpose, the main exposure factors were selected and various exposure situationswere set. The distance between the radioactive waste and the receptor, the size of the package, and thespeed of vehicle were selected as the main exposure factors. The exposure situation was largely dividedinto when the radioactive wastes were stationary and when they were passing. And the dose (rate) modelof the deterministic overland transportation risk assessment computer code was analyzed. Finally,the deterministic method of the RADTRAN computer code and the RISKIND computer code and theprobabilistic method of the MCNP 6 computer code were used to evaluate the exposure dose in variousexposure situations during transportation of radioactive wastes. Then we compared and analyzed them. As a result of the evaluation, the tendency of the exposure dose (rate) was similar when the radioactivewastes were stationary and passing. For the same situation, the evaluation results of the RADTRANcomputer code were generally more conservative than the results of the RISKIND computer code andthe MCNP 6 computer code. The evaluation results of the RISKIND computer code and the MCNP 6computer code were relatively similar. The results of this study are expected to be used as basic data forestablishing the radioactive wastes transportation risk assessment system in Korea in the future.
참고문헌 (21)
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