Browse > Article
http://dx.doi.org/10.14346/JKOSOS.2011.26.2.006

Analysis of Failure Probabilities of Pipes in Nuclear Power Plants due to Stress Corrosion Cracking  

Park, Jai-Hak (Department of Safety Engineering, Chungbuk University)
Lee, Jae-Bong (Doosan Heavy Industries)
Choi, Young-Hwan (Korea Institute of Nuclear Safety)
Publication Information
Journal of the Korean Society of Safety / v.26, no.2, 2011 , pp. 6-12 More about this Journal
Abstract
The failure probabilities of pipes in nuclear power plants due to stress corrosion are obtained using the P-PIE program, which is developed for evaluating failure probability of pipes based on the existing PRAISE program. Leak, big leak and LOCA(loss of coolant accident) probabilities are calculated as a function of operating time for several pipes in a domestic nuclear plant. The sensitivity analysis is also performed to find out the important parameters for the failure of pipes due to stress corrosion. The results show that the steady state oxygen concentration and steady state temperature are important parameters and failure probability is very low when the oxygen concentration is maintained according to the regulation.
Keywords
pipe; failure probability; stress corrosion cracking;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 USNRC SECY-98-144, Risk-Informed and Performance-Based Regulation, 1998.
2 EMT TR-98-4-1, D.O. Harris and D. Dedhia, "Win-PRAISE 98 : PRAISE Code in Windows", 1998.
3 박재학, 이재봉, 최영환, "원전배관의 파손확률평가를 위한 P-PIE 프로그램의 개발", 한국안전학회지, 제25권, 제6호, pp. 1-8, 2010.
4 박재학, "확률론적 배관 건전성 평가 프로그램 개발", 원자력안전기술원 보고서, KINS/HR-991, 2010.
5 KINS/GR-359, 원자력 안전규제 기술개발 : 원전기기건전성 평가 규제 기술 개발, 2006.
6 USNRC NUREG/BR-0303, Guidance for Performance-Based Regulation, 2002.