A Procedure for Estimation of Pipe Break Probabilities due to IGSCC
M. Bergman, B. Brickstad, F. Nilsson
A procedure has been developed for estimation of the failure probability of welds joints in nuclear piping susceptible to intergranular stress corrosion cracking. The procedure aims at a robust and rapid estimate of the failure probability for a specijic weld with known stress state. Random properties are taken into account of the crack initiation rate, the initial crack length, the in-service inspection eficiency and the leak rate. A computer realization of the procedure has been developed for user friendly applications by design engineers. Some examples are considered to investigate the sensitivity of the failure probability to dijferent input quantities.