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Title: Insights from an overview of four PRAs

Abstract

This paper summarizes the findings of an investigation of four probabilistic risk assessments (PRAs), those for Millstone 3, Seabrook, Shoreham, and Oconee 3, performed by Brookhaven National Laboratory (BNL) for the Reliability and Risk Assessment Branch of the US Nuclear Regulatory Commission (NRC). This group of four PRAs was subjected to an overview process with the basic goal of ascertaining what insights might be gained (beyond those already documented within the individual PRAs) by an independent evaluation of the group with respect to nuclear plant safety and vulnerability. Specifically, the objectives of the study were (1) to identify and rank initiators, systems, components, and failure modes from dominant accident sequences according to their contribution to core melt probability and public risk; and (2) to derive from this process plant-specific and generic insights. The effort was not intended to verify the specific details and results of each PRA but rather - having accepted the results - to see what they might mean in a more global context. The NRC had previously sponsored full detailed reviews of each of these PRAs, but only two, those for Millstone 3 and Shoreham, were completed and documented in time to allow their consideration within themore » study. This paper also presents some comments and insights into the amenability of certain features of these PRAs to this type of overview process.« less

Authors:
; ; ;
Publication Date:
Research Org.:
Brookhaven National Lab., Upton, NY (USA); Intermountain Technologies, Inc., Idaho Falls, ID (USA)
OSTI Identifier:
5048934
Report Number(s):
BNL-NUREG-38409; CONF-861211-9
ON: TI86014855
DOE Contract Number:  
AC02-76CH00016
Resource Type:
Conference
Resource Relation:
Conference: American Society of Mechanical Engineers winter meeting, Anaheim, CA, USA, 7 Dec 1986
Country of Publication:
United States
Language:
English
Subject:
22 GENERAL STUDIES OF NUCLEAR REACTORS; NUCLEAR POWER PLANTS; RISK ASSESSMENT; FAILURE MODE ANALYSIS; MILLSTONE-3 REACTOR; OCONEE-3 REACTOR; PROBABILISTIC ESTIMATION; SEABROOK-1 REACTOR; SEABROOK-2 REACTOR; SHOREHAM REACTOR; BWR TYPE REACTORS; ENRICHED URANIUM REACTORS; NUCLEAR FACILITIES; POWER PLANTS; POWER REACTORS; PWR TYPE REACTORS; REACTORS; SYSTEM FAILURE ANALYSIS; SYSTEMS ANALYSIS; THERMAL POWER PLANTS; THERMAL REACTORS; WATER COOLED REACTORS; WATER MODERATED REACTORS; 220900* - Nuclear Reactor Technology- Reactor Safety

Citation Formats

Fitzpatrick, R, Arrieta, L, Teichmann, T, and Davis, P. Insights from an overview of four PRAs. United States: N. p., 1986. Web.
Fitzpatrick, R, Arrieta, L, Teichmann, T, & Davis, P. Insights from an overview of four PRAs. United States.
Fitzpatrick, R, Arrieta, L, Teichmann, T, and Davis, P. Wed . "Insights from an overview of four PRAs". United States. https://www.osti.gov/servlets/purl/5048934.
@article{osti_5048934,
title = {Insights from an overview of four PRAs},
author = {Fitzpatrick, R and Arrieta, L and Teichmann, T and Davis, P},
abstractNote = {This paper summarizes the findings of an investigation of four probabilistic risk assessments (PRAs), those for Millstone 3, Seabrook, Shoreham, and Oconee 3, performed by Brookhaven National Laboratory (BNL) for the Reliability and Risk Assessment Branch of the US Nuclear Regulatory Commission (NRC). This group of four PRAs was subjected to an overview process with the basic goal of ascertaining what insights might be gained (beyond those already documented within the individual PRAs) by an independent evaluation of the group with respect to nuclear plant safety and vulnerability. Specifically, the objectives of the study were (1) to identify and rank initiators, systems, components, and failure modes from dominant accident sequences according to their contribution to core melt probability and public risk; and (2) to derive from this process plant-specific and generic insights. The effort was not intended to verify the specific details and results of each PRA but rather - having accepted the results - to see what they might mean in a more global context. The NRC had previously sponsored full detailed reviews of each of these PRAs, but only two, those for Millstone 3 and Shoreham, were completed and documented in time to allow their consideration within the study. This paper also presents some comments and insights into the amenability of certain features of these PRAs to this type of overview process.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1986},
month = {1}
}

Conference:
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