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A Review of the Three Mile Island-1 Probabilistic Risk Assessment (NUREG/CR-5457)

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Publication Information
Abstract

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NUREG/CR-5457 (PDF - 6.43 MB)

Publication Information

Manuscript Completed: September 1989
Date Published: November 1989

Prepared by
H. J. Reilly, D. L Schurman, H. J. Welland, R. C. Bertucio,,
S. A. Eide,2 P.R. Davis,s S. E. Mays,, A. J. Buslik,5 N. C. Chokshi s

Idaho National Engineering Laboratory
Managed by the U.S. Department of Energy

EG&G Idaho, Inc.
P.O. Box 1625
Idaho Falls, ID 83415

EI International, Inc. (presently with NUS Corporation)
EI International, Inc.
PRD Consulting
Tenera
U.S. Nuclear Regulatory Commission

Prepared for
Division of Systems Research

Office of Nuclear Regulatory Research
U.S. Nuclear Regulatory Commission
Washington, DC 20555
NRC FIN A6892
Under DOE Contract No. DE-AC07-761D01570

Availability Notice

Abstract

The Level I Probabilistic Risk Assessment that was prepared by Pickard, Lowe and Garrick for GPU Nuclear, and forWarded to NRC, was reviewed. The review included both plant internal events and three kinds of external events: plant fires, seismic events and river flooding. At the close of the review, the authors estimated the frequencies the core damage sequences would have if the recommended corrections were made to the data and assumptions. It was concluded that the recommended corrections would have a major effect on the estimated risk profile of TMI-1, including major increases in some sequence frequencies and major decreases in others.