Stochastic Simulation of PWR Vessel Integrity for Pressurized Thermal Shock Conditions

[+] Author and Article Information
P. S. Jackson, D. S. Moelling

Nuclear Power Systems, Combustion Engineering, Inc., Windsor, Conn. 06095

J. Pressure Vessel Technol 106(3), 223-229 (Aug 01, 1984) (7 pages) doi:10.1115/1.3264336 History: Received June 07, 1983; Revised May 08, 1984; Online November 05, 2009


A stochastic simulation methodology is presented for performing probabilistic analyses of Pressurized Water Reactor vessel integrity. Application of the methodology to vessel-specific integrity analyses is described in the context of Pressurized Thermal Shock (PTS) conditions. A Bayesian method is described for developing vessel-specific models of the density of undetected volumetric flaws from ultrasonic inservice inspection results. Uncertainty limits on the probabilistic results due to sampling errors are determined from the results of the stochastic simulation. An example is provided to illustrate the methodology.

Copyright © 1984 by ASME
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