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Approaches at KAIST NICIE Lab to quantifying safety culture in nuclear power plants HAN Sang Min1, KIM Ar Ryum1, KIM Young Gab2, and SEONG Poong Hyun1 1. Department of Nuclear and Quantum Engineering, Korea Advanced Institute of Science and Technology, 291 Daehak-ro, Yuseong-gu, Daejeon 34141, Republic of Korea (gkstkdals@kaist.ac.kr; arryum@kaist.ac.kr; phseong@kaist.ac.kr) 2. Operation Experience Analysis Team, Korea Hydro & Nuclear Power Co. Central Research Institute, 70, 1312-gil Yuseong-daero, Yuseong-gu, Daejeon 34101, Republic of Korea (iamkygab@khnp.co.kr)    Abstract: The aim of this study is to introduce quantitative evaluation methods for Nuclear Safety Culture (NSC) by three aspects of Nuclear Power Plant (NPP): individuals, operation team, and organization. Various NSC evaluation methods have been developed, and the Korea NPP utility company has conducted the NSC assessment according to international practice. However, the results are often qualitative, subjective, and mainly dependent on evaluator’s judgement, so the assessment results can be interpreted from different perspectives. To resolve limitations of present evaluation methods, quantitative NSC evaluation methods for individual, operation team, and organization have been developed 3in Nuclear I&C and Information Engineering (NICIE) Lab. at Korea Institute of Science and Technology (KAIST). In this study, three methods will be introduced and verification process and applications of the methods will be reviewed. Keyword: nuclear safety culture; quantitative evaluation; individual; operation team; organization
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