A comparison of the small and large event tree approaches used in PRAs

This paper compares the small event tree and the large event tree approaches to accident sequence event tree analysis using a simple example problem. The motivation for ‘cut set matching’ or ‘list matching’ and other approximations is presented. Results show that both event tree approaches produce t...

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Bibliographic Details
Published inReliability engineering & system safety Vol. 37; no. 1; pp. 79 - 90
Main Author Rasmuson, Dale M.
Format Journal Article
LanguageEnglish
Published Oxford Elsevier Ltd 1992
Elsevier
Subjects
Applied sciences
Energy
Energy. Thermal use of fuels
Exact sciences and technology
Fission nuclear power plants
Installations for energy generation and conversion: thermal and electrical energy
Cooling
Accident
Probabilistic approach
Fault tree
Nuclear power plant
Probabilistic risk assessment
Reactor vessel
Risk analysis
Containment confinement
Emergency procedure
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Summary:This paper compares the small event tree and the large event tree approaches to accident sequence event tree analysis using a simple example problem. The motivation for ‘cut set matching’ or ‘list matching’ and other approximations is presented. Results show that both event tree approaches produce the same cut sets and numerical results. The intricacies and subtleties of the approaches are not presented. The opinions and viewpoints contained in this paper are the author's personal ones and do not necessarily reflect the criteria, requirements, and guidelines of the U.S. Nuclear Regulatory Commission.
ISSN:0951-8320
1879-0836
DOI:10.1016/0951-8320(92)90062-P