Probabilistic fracture mechanics integrity

Both deterministic and probabilistic fracture mechanics methodologies are being development for the integrity assessment of flawed or cracked structure. [Pg.130]

Probabilistic fracture mechanics risk analysis of reactor pressure vessel (RPV) integrity... [Pg.378]

Key words reactor pressure vessel integrity, probabilistic fracture mechanics, risk-based safety goals, through-wall cracking frequency. [Pg.378]

The event frequencies and conditional failure probabilities used to evaluate vessel integrity in the USA are distributions. Probabilistic fracture mechanics computations generate distributions of conditional probability of initial flaw extension (CPI) and conditional probability of vessel failure (CPF) for each transient event and a number of statistically sampled trial pressure vessels. The CPF distributions and the frequency distributions for each transient event are combined to generate a TWCF distribution for the population of trial vessels and events. The individual TWCF values in the distribution are ... [Pg.380]