ML20210C903
| ML20210C903 | |
| Person / Time | |
|---|---|
| Site: | FitzPatrick  |
| Issue date: | 06/30/1999 |
| From: | Watford G GENERAL ELECTRIC CO. |
| To: | Wermiel J NRC (Affiliation Not Assigned), NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| Shared Package | |
| ML20210C885 | List: |
| References | |
| GAW-99-003, MFN-004-99, NUDOCS 9907270075 | |
| Download: ML20210C903 (2) | |
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GE Nuclear Brergy cenas enunc company P. O. Box 100. Wikrungon, NC 28402 June 30,1999 GAW-99-003 MFN-004-99 Document Control Desk US Nuclear Regulatory Commission Washington, DC 20555-0001 Attention:
J. L. Vermici, Chief Reactor Systems Branch
Subject:
Summary of Changes and Errors in ECCS E.aluation Models
Reference:
Letter, G. A. Watford to the Document Control Desk (T. E. Collins), Repornng ofChanges and Errors in ECCS Evaluation Models, dated June 30, l998 (MFN-032 8).
The purpose of this letter is to summarize the impxt of changes and errors in the methodology used by GE to demonstrate compliance with the Emergency Core Cooling System (ECCS) requirements of 10 CFR 50.46. This report covers the period from the last report (Reference) to the present. It is noted that Peak Cladding Temperature (PCT) variations resulting from plant specific system or fuel changes are not addressed in this letter. These should be treated, as appropriate, on a plant specific basis in accordance with other sections of 10CFR50.
A summary of the changes and errors is provided in the attached table. The table describes the approved methodology affected, the range of applicability of the change /crror, a brief description of the change /crror and the estimated impact.
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All utilitics using these evaluation models have been notified of these changes /crrors to assist them in reporting, in accordance with 10CFR50.46 (a) (3) (ii).
If you have any questions, please call me.
Since 'ly, J
.4.
tford, Manager Nuclear Fuel Engineering (910) 675-5446 9907270075 990721 PDR ADOCK 05000333 P
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