Risk-significant functional dependencies in PWRs: Final report
Abstract
This report was inspired by the informal observation that functional dependencies among plant systems, particularly those between frontline safety systems and support systems, are often major contributors to the risks calculated in completed PRAs. This study provides evidence that this is indeed the case and seeks to determine how the risk impact of functional dependencies can be reduced in future nuclear power plant designs. Our insights have been summarized by a set of nine design principles that are not new to the nuclear industry and, indeed, have generally been implemented. Their risk significance, however, may not have been fully appreciated in the design process because of the usual practice of not emphasizing the beyond-design basis accidents. It is in pointing out the dependencies that are important to risk that both PRAs and this study make a contribution. 1 fig., 6 tabs.
- Authors:
- Publication Date:
- Research Org.:
- Pickard, Lowe and Garrick, Inc., Newport Beach, CA (USA)
- OSTI Identifier:
- 5625193
- Report Number(s):
- EPRI-NP-5536
ON: TI88920137
- Resource Type:
- Technical Report
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 22 GENERAL STUDIES OF NUCLEAR REACTORS; 21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS; PWR TYPE REACTORS; REACTOR ACCIDENTS; RISK ASSESSMENT; BLACKOUTS; PROBABILISTIC ESTIMATION; REACTOR CORE DISRUPTION; ACCIDENTS; REACTORS; WATER COOLED REACTORS; WATER MODERATED REACTORS; 220900* - Nuclear Reactor Technology- Reactor Safety; 210200 - Power Reactors, Nonbreeding, Light-Water Moderated, Nonboiling Water Cooled
Citation Formats
Frank, M V, and Fleming, K N. Risk-significant functional dependencies in PWRs: Final report. United States: N. p., 1987.
Web.
Frank, M V, & Fleming, K N. Risk-significant functional dependencies in PWRs: Final report. United States.
Frank, M V, and Fleming, K N. 1987.
"Risk-significant functional dependencies in PWRs: Final report". United States.
@article{osti_5625193,
title = {Risk-significant functional dependencies in PWRs: Final report},
author = {Frank, M V and Fleming, K N},
abstractNote = {This report was inspired by the informal observation that functional dependencies among plant systems, particularly those between frontline safety systems and support systems, are often major contributors to the risks calculated in completed PRAs. This study provides evidence that this is indeed the case and seeks to determine how the risk impact of functional dependencies can be reduced in future nuclear power plant designs. Our insights have been summarized by a set of nine design principles that are not new to the nuclear industry and, indeed, have generally been implemented. Their risk significance, however, may not have been fully appreciated in the design process because of the usual practice of not emphasizing the beyond-design basis accidents. It is in pointing out the dependencies that are important to risk that both PRAs and this study make a contribution. 1 fig., 6 tabs.},
doi = {},
url = {https://www.osti.gov/biblio/5625193},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Dec 01 00:00:00 EST 1987},
month = {Tue Dec 01 00:00:00 EST 1987}
}