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http://dx.doi.org/10.15683/kosdi.2022.6.30.252

Research Trends on External Event Identification and Screening Methods for Safety Assessment of Nuclear Power Plant  

Kim, Dongchang (Department of Convergence & Fusion System Engineering, Kyungpook National University)
Kwag, Shinyoung (Department of Civil & Environmental Engineering, Hanbat National University)
Kim, Jitae (Division of Safety Inspection, Korea Institute of Nuclear Safety)
Eem, Seunghyun (Department of Convergence & Fusion System Engineering, Kyungpook National University)
Publication Information
Journal of the Society of Disaster Information / v.18, no.2, 2022 , pp. 252-260 More about this Journal
Abstract
Purpose: As the intensity and frequency of natural hazards are increasing due to climate change, external events that affecting nuclear power plants(NPPs) may increase. NPPs must be protected from external events such as natural hazards and human-induced hazards. External events that may occur in NPPs should be identified, and external events that may affect NPPs should be identified. This study introduces the methodology of identification and screening methods for external events by literature review. Method: The literature survey was conducted on the identification and screening methods of external events for probabilistic safety assessment of NPPs. In addition, the regulations on the identification and screening of external events were investigated. Result: In order to minimize the cost of external event impact analysis of nuclear power plants, research on identifying and screening external events is being conducted. In general, in the identification process, all events that can occur at the NPPs are identified. In the screening process, external events are selected based on qualitative and quantitative criteria in most studies. Conclusions: The process of identifying and screening external events affecting NPPs is becoming important. This paper, summarize on how to identify and screen external events for a probabilistic safety assessment of NPPs. It is judged that research on bounding analysis and conservative analysis methods performed in the quantitative screening process of external events is necessary.
Keywords
Nuclear Power Plants; Natural Hazard; External Events; Identification; Screening; Climate Change;
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