| Title |
Screening Cases of Potential Extreme Natural Hazards Based on External Event Analysis of Operational Nuclear Power Plants |
| Authors |
정길영(Chung, Gil-Young) ; 김기배(Kim, Gi-Bae) ; 박현성(Park, Hyun-Sung) ; 박형규(Park, Hyung-Kui) ; 전영선(Choun, Young-Sun) ; 장수혁(Chang, Soo-Hyuk) |
| DOI |
https://doi.org/10.12652/Ksce.2023.43.6.0699 |
| Keywords |
원자력 발전소; 외부사건; 극한자연재해; 선별절차; 정성적 선별; 정량적 선별 Nuclear power plant; External events; Extreme natural hazards; Screening procedures; Qualitative screening; Quantitative screening |
| Abstract |
Nuclear power plants (NPPs) consider possible external events, including natural hazards, during the design phase to ensure safe operation. However, in recent years, due to the increasing probability of natural hazards exceeding the design, a careful review of extreme natural hazards and unforeseen external events during the design phase has become necessary. In this study, the objective was to screen potential extreme natural hazards at NPP sites in Korea. Initially, we investigated and analyzed the characteristics of NPP sites and the events caused by external hazards. Furthermore, we analyzed existing literature and research data to establish screening procedures and criteria that suit the actual conditions of domestic NPPs. Based on these criteria and data, we conducted qualitative screening for each NPP site and identified potential extreme natural hazards through quantitative screening and walkdown. As a result of the screening, in addition to internal flooding caused by heavy rain, wind pressure and extreme air pressure caused by extreme winds were screened as potential extreme natural hazards common to all sites. Additionally, at the Kori site, storm surge was selected as the most significant potential extreme natural hazard. |