A study on the reliability assessment methodology for pressure piping containing circumferential defects III: the determination method of acceptable failure probability of a certain pressure piping

摘要

The acceptable failure probability of different pressure piping systems should differ as a result of theirdifferent degrees of importance. In this paper, a method for the determination of the importancelevels of different pressure piping is proposed. Then, on the basis of the fuzzy sets theory andexpansion theorem, the method of calculating the corresponding acceptable failure probability of acertain pressure piping is established.