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피로 및 응력부식균열에 의한 원전 배관의 복합누설확률 평가
김승현,나시물 고니,장윤석,장창희,Kim, Seung Hyun,Goni, Nasimul,Chang, Yoon-Suk,Jang, Changheui 한국압력기기공학회 2015 한국압력기기공학회 논문집 Vol.11 No.2
In the present study, complex leakage probabilities of nuclear pipes due to fatigue and stress corrosion cracking are evaluated by using the PINTIN(Piping INTegrity INner flaws) that is developed based on the existing PRAISE(Piping Reliability Analysis Including Seismic Events) program. With regard to the aging and crack instability, small leak and big leak probabilities are calculated for several pipes in a reactor coolant system of domestic nuclear plant. Moreover, sensitivity analysis is also performed to find out the effect of parameters for the leakage of pipes, which shows the coolant temperature is the most influencing parameter.