대한토목학회논문집 (KSCE Journal of Civil and Environmental Engineering Research)

  • 제43권6호
  • /
  • Pages.699-708
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  • 2023
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  • 1015-6348(pISSN)
  • /
  • 2799-9629(eISSN)
대한토목학회 (Korean Society of Civil Engeneers)
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가동 원전의 외부사건 분석에 기반한 잠재적 극한자연재해의 선별

Screening Cases of Potential Extreme Natural Hazards Based on External Event Analysis of Operational Nuclear Power Plants

  • 정길영 ((주)세니츠코퍼레이션 기술연구소) ;
  • 김기배 ((주)세니츠코퍼레이션 기술연구소) ;
  • 박현성 ((주)세니츠코퍼레이션 기술연구소) ;
  • 박형규 ((주)세니츠코퍼레이션 기술연구소) ;
  • 전영선 ((주)세니츠코퍼레이션 기술연구소) ;
  • 장수혁 ((주)세니츠코퍼레이션)
  • 투고 : 2023.09.04
  • 심사 : 2023.10.31
  • 발행 : 2023.12.01
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초록

원자력 발전소는 안전하게 운영될 수 있도록 설계단계에서 자연재해를 포함한 예상 가능한 모든 외부사건들이 고려되고 있다. 그러나 최근에 기후변화로 인해 설계를 초과하는 자연재해의 발생 가능성이 증가하면서 설계 당시에 예측하지 못했던 극한자연재해와 외부사건에 대해 세심한 검토가 요구되고 있다. 본 연구에서는 국내 원전 부지별 잠재적 극한자연재해를 선별하고자 하였다. 이를 위해서 원전 부지특성과 원전 부지별 외부재해로 인해 발생한 사건을 조사하고 분석하였다. 그리고 기존 문헌과 연구 자료를 조사하여 국내 원전 실정에 맞는 선별절차와 기준을 수립하였다. 본 연구에서 수립된 선별기준에 근거하여 원전 부지별로 정성적 선별을 수행하였고, 선별된 자연재해를 대상으로 정량적 선별과 현장실사를 통해 국내 원전 부지별 잠재적 극한자연재해를 선별하였다. 선별 결과, 폭우에 의한 내부침수 이외에도 강풍에 의한 풍압과 극한 공기압이 모든 부지에서 공통적인 잠재적 극한자연재해로 선별되었다. 그리고 고리부지의 경우 폭풍해일이 1순위의 잠재적 극한자연재해로 선정되었다.

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.

키워드

과제정보

This work was supported by the Korea Institute of Energy Technology Evaluation and Planning(KETEP) and the Ministry of Trade, Industry & Energy(MOTIE) of the Republic of Korea (No. 20224B10200040).

참고문헌

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