Risk-benefit analyses of SG tube maintenance based on probabilistic fracture mechanics

摘要

As an application of probabilistic fracture mechanics (PFM), a risk -benefit analysis was performed for the purpose of optimizing maintenance activities of steam generator (SG) tubes used in this study. A model was made modifying pc-PRAISE (Piping Reliability Analysis Including Seismic Events) to evaluate the risks during 60 year operations due to stress corrosion cracking (SCC) of the tubes under various maintenance strategies for SG tubes.