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Application of FAD on Pressure Tube for the Probabilitic Integrity Assessment

파손평가선도를 이용한 압력관 결함의 확률론적 건전성 평가

  • 곽상록 (한국철도기술연구원) ;
  • 왕종배 (한국원자력안전기술원) ;
  • 박윤원 (경기대학교 기계공학부) ;
  • 이준성 (한국철도기술연구원, 안전체계연구그룹)
  • Published : 2004.03.01

Abstract

Pressure tubes are major component of nuclear reactor, but only selected samples are periodically examined due to numerous numbers of tubes. Current in-service inspection result show there is high probability of flaw existence at uninspected pressure tube. Probabilistic analysis is applied in this study for the integrity assessment of uninspected pressure tube. All the current integrity evaluations procedures are based on conventional deterministic approaches. So it is expected that the results obtained are too conservative to perform a rational evaluation of lifetime. More realistic failure criteria, based on FAD are also proposed for the probabilistic analysis. As a result of this study failure probabilities for various conditions are calculated, and examined application of FAD and LBB concept.

Keywords

FAD;Monte Carlo Simulation;Plastic Collapse;Probabilistic Integrity Assessment

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