United States Nuclear Regulatory Commission - Protecting People and the Environment

A Review of the Limerick Generating Station Severe Accident Risk Assessment: Review of Core-Melt Frequency (NUREG/CR-3493, BNL-NUREG-51711)

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Publication Information

Manuscript Completed: July 1984
Date Published:
July 1984

Prepared by:
M.A. Azarm, R.A. Bari, J.L. Boccio, N. Hanan,
I.A. Papazoglou, C. Ruger, K. Shiu,
Department of Nuclear Energy
Brookhaven National Laboratory
Upton, NY 11973

J. Reed, M. McCann
Jack R. Benjamin Associates, Inc.

A. Kafka
Boston College

Prepared for:
Division of Safety Technology
Office of Nuclear Reactor Regulation
U.S. Nuclear Regulatory Commission
Washington, DC 20555-0001

NRC FIN A-3393

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Abstract

A limited review is performed of the Severe Accident Risk Assessment for the Limerick Generating Station. The review considers the impact on the core-melt frequency of seismic- and fire-initiating events. An evaluation is performed of methodologies used for determining the event frequencies and their impacts on the plant components and structures. Particular attention is given to uncertainties and critical assumptions. Limited requantification is performed for selected core-melt accident sequences in order to illustrate sensitivities of the results to the underlying assumptions.

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