한국안전학회지 (Journal of the Korean Society of Safety)

  • 제38권3호
  • /
  • Pages.110-120
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  • 2023
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  • 1738-3803(pISSN)
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  • 2383-9953(eISSN)
한국안전학회 (The Korean Society of Safety)
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다수기 PSA 기반 원자력 발전소 이동형 안전 설비 활용성 평가

Evaluating the Application of Portable Safety Equipment in Nuclear Power Plants using Multi-unit PSA

  • 윤재영 (한국원자력연구원 리스크평가연구실) ;
  • 임호곤 (한국원자력연구원 리스크평가연구실) ;
  • 박종우 (한국원자력연구원 리스크평가연구실)
  • Jae Young Yoon (Risk Assessment Research Team, Korea Atomic Energy Research institute) ;
  • Ho-Gon Lim (Risk Assessment Research Team, Korea Atomic Energy Research institute) ;
  • Jong Woo Park (Risk Assessment Research Team, Korea Atomic Energy Research institute)
  • 투고 : 2023.01.02
  • 심사 : 2023.05.02
  • 발행 : 2023.06.30
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초록

Following the Fukushima accident, portable equipment employed as accident mitigating systems have been installed and operated to reduce core damage and large early release frequencies. In addition, the establishment of an accident management strategy has gained importance. This study investigated the current status of portable equipment including the international portable equipment FLEX (diverse and flexible coping strategies), and domestic portable equipment multi-barrier accident coping strategy (MACST). Research on optimal utilization of MACST remains insufficient. As a preliminary study for establishing an optimal strategy, sensitivity studies were conducted to facilitate the priority of use on portable equipment, number of portable equipment, and dependency of operator actions based on a multi-unit probabilistic safety assessment model. The results revealed the conditions that reduced the multi-unit and site conditional core damage probabilities, indicating the optimal strategy of MACST. The results of this study can be used as a reference for establishing an optimal strategy that utilizes domestic safety equipment in the future.

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. 20224B10200050).

참고문헌

  1. Nuclear Energy institute, Diverse and Flexible Coping Strategies (FLEX) Implementation Guide, NEI 12-06 [Rev 0], 2012.
  2. S.-T. Yang, "The Follow-up Status of Accident Management Plan of Nuclear Operators", Workshop on Korean Nuclear Society Autumn Meeting, 2019.
  3. J. M. Park, E. S. Kim, H. B. Yim, C. G. Lee, K. S. Sung, M. H. Lee, C. E. Park and G. C. Lee, "A Current Development Status of the Beyond Design Basis External Events Coping Strategies: MACST Operating Guidelines", Journal of Power Engineering, 2018.
  4. S.-T. Yang, The Current Status and Plan of AMP-ST of Nuclear Operators, Workshop on Korean Nuclear Society Autumn Meeting, 2018.
  5. J. Kim, W. Jung and J. Park, "Human Reliability Analysis of the FLEX/MACST Actions deploying Portable Equipment", Transactions of the Korean Nuclear Society Autumn Meeting, 2018.
  6. J. Y. Yoon and D. S. Kim, "Estimating the Adverse Effects of Inter-unit Radioactive Release on Operator Actions at a Multi-unit Site", Reliability Engineering and System Safety, Vol. 228, 2022.
  7. Y. Park, S. Kim, Y. Jin, D. H. Kim and M. Jae, "Evaluation for Accident Mitigation Effect of External Injection at WH600 using MELCOR", Transactions of the Korean Nuclear Society Autumn Meeting, pp. 1-4, 2020.
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