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Strain-Based Structural Integrity Evaluation Methods for Nuclear Power Plant Piping under Beyond Design Basis Earthquake

설계기준초과지진 하의 원전 배관 구조건전성 평가를 위한 변형률 기반 방법

  • 이대영 (한국전력기술 미래전력기술연구소) ;
  • 박흥배 (한국전력기술 미래전력기술연구소) ;
  • 김진원 (조선대학교 원자력공학과) ;
  • 류호완 (고려대학교 기계공학부) ;
  • 김윤재 (고려대학교 기계공학부)
  • Received : 2016.12.01
  • Accepted : 2016.12.22
  • Published : 2016.12.30

Abstract

Following the 2011 Fukushima Nuclear Power Plant accident, the IAEA has issued a revised version of the Nuclear Safety Standard for beyond design basis earthquake to consider the core meltdown accident. In Korea, relevant laws and regulations were also revised to consider beyond design basis earthquake to nuclear components. In this paper, CAV, an seismic damage factor that determines the restart of nuclear power plant after operating breakdown earthquake, is proposed for extension to the beyond design basis earthquake. For pipings not satisfying the beyond design basis earthquake condition, several evaluation methods are suggested, such as strain-based evaluation methods, simple nonlinear analysis method and cumulative damage evaluation method.

Keywords

References

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