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Insights from accident probability calculation for spent fuel transportation and storage   YUN Mirae1, CHRISTIAN Robby2, ALMOMANI Belal1, and KANG Hyungook1,2   1. Department of nuclear and quantum engineering, KAIST, 291 Daehak-ro, Yuseong-gu, Daejeon, 305-701, Republic of Korea (future-@kaist.ac.kr) 2. Department of Mechanical, Aerospace, and Nuclear Engineering, Rensselaer Polytechnic Institute, Troy, New York, 12180, United States of America (rckkms@kaist.ac.kr)   Abstract: As capacity of onsite spent fuel storage facility meets its limitation, spent fuels needs to be transported to other space. This study aims to reveal new insights from the risk analysis of spent fuel transportation and interim storage. In consideration that spent fuels might be transported by ship rather than by train or truck due to coastal location of plant, this study focuses on three different kinds of accident: Aircraft crash on interim storage, Drop accident during onsite transportation, and Maritime transportation accidents. Accident probabilities were calculated based on probabilistic distribution, historical data, structure analysis. Risks were calculated from accident probability and consequence and cask studies for risk calculation were performed using developed software. Due to the integrity of casks, the estimated risks were reasonably small; however, it is highly dependent on accident conditions. Therefore, appropriate strategy for regulation and management for spent fuel transportation and interim storage is required to be developed based on risk analysis. Keyword: maritime transportation; aircraft crash on an interim storage facility; drop accident during onsite transportation; level 3 PSA; spent fuel transportation
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