ML20079M024
| ML20079M024 | |
| Person / Time | |
|---|---|
| Site: | McGuire, Mcguire  |
| Issue date: | 11/04/1991 |
| From: | Tucker H DUKE POWER CO. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| Shared Package | |
| ML17262B228 | List: |
| References | |
| GL-88-20, NUDOCS 9111070233 | |
| Download: ML20079M024 (2) | |
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~ November 4,--1991 lU. S. Nuclear Regulatory _ Commission Attention: Document Control Desk Washington l DC 20555
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Subject:
-.htcGuire Nuclear Station:
Docket Nos: 50-369 and 50 370
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Dear Sir:
In-response to GL-8820,- Duke Power Company has completed the Individual Plant Examination (IPE) for severe accident vulnerabilities for the hicGuire Nuclear Station, and the attached reports pre ent the IPE results. The McGuire IPE program was
! conducted consistent with the approach and methodology described in our November E
1,.1989 60-day submittal letter,nthich was accepted by-the NRC by its letter el
- January 24, 1990.
This subinittal includes the enclosed hicGuire IPE Submittal Report and the three-volume McGuire Probabilistic Risk Asiessment Report. The IPE Submittal Report -
.' summarizes the methods, results, and conclusions of the McGuire IPE.
The McGirire PRA study and the IPE process involved a comprehensive, systematic 1
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examination of the McGuire reactou in regard to potential severe accidents. This examination employed detailed systems analysis and in-plant and ex-plant consequence
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= analysis,1took into account plant modifications as of December 1990 and pertinent plant operating experience, and addressed both internal and external initiating events;-
The McGuire IPE has'iden'tified the severe accident sequences of significance, both -
{ internally and externally induced _with quantitative perspectives on their likelihood and
. fission product release potentiali :The insights from this study have prompted some-1.
- plant enhancements, as discussed in Section 3 of the IPE report. The examination f process and_ the accompanying dialogue with operations as well as' technical and ~
management personnel have ~ created -- a level of appreciation and - improved understanding-for the-varied mechanisms, complexity, and severity of types of accidents. The integrated safety profile evident from the risk results confirms that the McGuire Nuclear Station poses no undue risk to the public health and safety.
Therefore, the objectives of Generic Letter 88-20 are fully satisfied.
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' U.S. Nuclear Regulatory Commission Page Two November 4,1991
' As part of the hicGuire IPE process, USl A 45 and USI A 17 have been evaluated, and it has been concluded that these issues can be considered adequately resolved for L
hicGuire, Also, Generic Issues GI-105, GI-130 and the Containment Performance f
Issue have been evaluated for resolution for hicGuire.
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In conclusion, the AlcGuire IPE consisting of a complete Level 3 PRA with a detailed analysis of internal and external events, computations of containn'ent performance, and risk calculations has been completed.
The insights resulting from this examination have been utilized to enhance the plant capability during severe accidents.
This IPE submittal contains adequate information to resolve the severe accident vulnerability issue for hicGuire.
I declare under penalties of perjury that the statements set forth herein are true and
- correct tot he best of my knowledge.
Very truly youts,-
Jighi /I [
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H. B. Tucker xc:
S.D. Ebneter, Regional Administrator, Ril P.K. Van Doorn, Resident Inspector, hicGuire N.S.
Tim Reed, Project hianager I.
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