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Use of a fuzzy decision-making method in evaluating severe accident management strategies
Affiliation:1. Department of Nuclear Engineering, Hanyang University, 17 Haengdang, Sungdong, Seoul, 133-791 Republic of South Korea;2. Department of Nuclear Engineering, Seoul National University, Seoul, Republic of South Korea;1. Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, China;2. Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang 621900, Sichuan Province, China;3. Key Laboratory of Advanced Reactor Engineering and Safety, Ministry of Education, Beijing 100084, China;4. Naval Research Academy of China, Beijing, China;1. Fundamental Science on Nuclear Safety and Simulation Technology Laboratory, College of Nuclear Science and Technology, Harbin Engineering University, Harbin, China;2. Institute of Nuclear and New Energy Technology (INET), Collaborative Innovation Center of Advanced Nuclear Energy Technology, Key Laboratory of Advanced Reactor Engineering and Safety of Ministry of Education, Tsinghua University, Beijing, China;1. Department of Nuclear Engineering Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea;2. Mechanical Engineering, Pusan National University (PNU), Busan, Republic of Korea;1. Energy Department, Politecnico di Milano, Via La Masa 34, 20156 Milano, Italy;2. Chair on System Science and Energetic Challenge Fondation EDF, Ecole Centrale Paris and Supelec, Paris, France;3. School of Nuclear Science and Engineering, North China Electric Power University, 102206 Beijing, China
Abstract:In developing severe accident management strategies, an engineering decision would be made based on the available data and information that are vague, imprecise and uncertain by nature. These sorts of vagueness and uncertainty are due to lack of knowledge for the severe accident sequences of interest. The fuzzy set theory offers a possibility of handling these sorts of data and information. In this paper, the possibility to apply the decision-making method based on fuzzy set theory to the evaluation of the accident management strategies at a nuclear power plant is scrutinized. The fuzzy decision-making method uses linguistic variables and fuzzy numbers to represent the decision-maker's subjective assessments for the decision alternatives according to the decision criteria. The fuzzy mean operator is used to aggregate the decision-maker's subjective assessments, while the total integral value method is used to rank the decision alternatives. As a case study, the proposed method is applied to evaluating the accident management strategies at a nuclear power plant.
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