한국안전학회지 (Journal of the Korean Society of Safety)

  • 제17권2호
  • /
  • Pages.92-99
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  • 2002
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  • 1738-3803(pISSN)
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  • 2383-9953(eISSN)
한국안전학회 (The Korean Society of Safety)
권호 표지

모터구동 밸브 주기적 안전성 확인을 위한 중요도 분류

Categorization of Motor Operated Valve Safety Significance for Its Periodic Safety Verification

  • 발행 : 2002.06.30
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초록

Safety-related motor operated valve(MOV) safety significance for Ulchin Unit 3 was categorized. The safety evaluation of MOV of domestic nuclear power plants affects the generic data used for the quantification of MOV common cause failure(CCF) events in Ulchin Units 3&4 PSA. Therefore, in this paper, MGL(multiple greek letter)parameter ${\beta}$, used for the evaluation of MOV CCF probabilities in Ulchin Units 3&4 probabilistic safety assessment(PSA), was re-estimated and the MOV safety significance was categorized. The re-estimation results of MGL parameter show that the value of(is decreased by 30% compared with the current value used in Ulchin Unit 3&4 PSA. The categorization results of MOV safety significance using the changed value of MGL parameter(show that the number of HSSCs(high safety significant components) is decreased by 54.5% compared with those using the current value of it used in Ulchin Units 3&4 PSA.

키워드

참고문헌

  1. 김월태, '안전관련 모터구동밸브 규제 기술연구,' KINS/AR-454, 한국안전기술 연구원, 1995
  2. '모터구동밸브 및 동력구동 게이트 밸브 안전성 확인방안 검토 용역,' 한국전력공사, 1997
  3. GL 89-10, "Safety-Related Motor Operated Testing and Surveillance," NRC, 1989
  4. GL 95-07, 'Pressure Locking and Thermal Binding of Safety-ReIated Power Operated Gate Valve,' 1995
  5. GL 96-05, 'Periodic Verification of Design-Basis Capability of Safety-ReIated Motoe OperatedValves,' NRC, 1996
  6. 성게용, 'MOV Safety Evaluation,' 세미나 자료, 2001
  7. '모터구동밸브 및 동력구동 게이트 밸브의 안전성 확인을 위한 권고사항,' 과학기술부, 1997
  8. Craig Sellers, Kar; Fleming, et al., "Optimized Periodic Verification Testing, Blended Risk and Performance-Based MOV IST Program, An Application of ASME Code Case OMN-l," NUREG/CP-0152, Proceedings of the 4th NRC/ASME Symposium on Valve and Pump Testing, 1996
  9. 'Risk Ranking Approach for MOVs in response to generic letter 96-05,' WOG, 1998
  10. ASME OMN-l Code Case, 'Alternative Rules tor Preservice and Insetrvice Testing of Certain Elctric Motor Operated Valve Assemblies in LWR Power PIants,' 1995
  11. 'Classification and Analysis of Reactor Operating Experience Involving Dependent Events,'EPRI/NP-3967, PL&G Inc., 1985
  12. 'Ulchin Units 3&4 Final Probabilistic Safety Assessment,' 한국전력공사 , 1995
  13. A. Mosley et al., 'Procedures for Treating Common Cause failures in Safety and Reliability Studies,' NUREG/CR-4780, NRC, 1987