Theoretical and user`s manual for pc-PRAISE: A probabilistic fracture mechanics computer code for piping reliability analysis
- Failure Analysis Associates, Inc., Menlo Park, CA (United States)
- Lawrence Livermore National Lab., CA (United States)
The purpose of this document is to collect under one cover and update the documentation related to the PRAISE Computer Code. pc-PRAISE is the most recent version of the code, which is a probabilistic fracture mechanics code that has recently been modified to run on an IBM personal computer to evaluate the reliability of welds in nuclear power plant piping systems. pc-PRAISE was adapted from the PRAISE Computer Code, which was originally developed in 1980--81 by Lawrence Livermore National Laboratory (LLNL) under funding from the US Nuclear Regulatory Commission for assessment of the influence of seismic events on the failure probability of piping in pressurized water reactors. PRAISE is an acronym for Piping Reliability Analysis Including Seismic Events, and has been significantly expanded in recent years to allow consideration of both crack initiation and growth in a variety of piping materials in pressurized and boiling water reactors. PRAISE has a deterministic basis in fracture mechanics. Some of the inputs, such as initial crack size and inspection detection probability, are considered to be random variables, and failure probability versus time for a given weldment is evaluated by Monte Carlo simulation. Complex realistic stress histories can be treated by the code, and sets of random material properties for representative piping materials are built into the code. This document provides a comprehensive summary of the deterministic basis of the code, along with description of statistical distributions of random variables. Code inputs are described and an extensive set of sample problems is provided along with descriptions of representative outputs.
- Research Organization:
- Nuclear Regulatory Commission, Washington, DC (United States). Div. of Engineering; Lawrence Livermore National Lab., CA (United States); Failure Analysis Associates, Inc., Menlo Park, CA (United States)
- Sponsoring Organization:
- Nuclear Regulatory Commission, Washington, DC (United States)
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 10162360
- Report Number(s):
- NUREG/CR-5864; UCRL-ID-109798; ON: TI92018111
- Resource Relation:
- Other Information: PBD: Jul 1992
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE
P CODES
PIPES
FRACTURE MECHANICS
WELDED JOINTS
PWR TYPE REACTORS
BWR TYPE REACTORS
COMPUTER PROGRAM DOCUMENTATION
RELIABILITY
SEISMIC EFFECTS
INSPECTION
CRACKS
CRACK PROPAGATION
210200
210100
990200
POWER REACTORS
NONBREEDING
LIGHT-WATER MODERATED
NONBOILING WATER COOLED
POWER REACTORS
NONBREEDING
LIGHT-WATER MODERATED
BOILING WATER COOLED
MATHEMATICS AND COMPUTERS