ML19275A868
| ML19275A868 | |
| Person / Time | |
|---|---|
| Site: | North Anna  |
| Issue date: | 09/28/1979 |
| From: | Brown S VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.) |
| To: | |
| References | |
| REF-PT21-79-157-000 792, NUDOCS 7910190393 | |
| Download: ML19275A868 (2) | |
Text
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., - t ' NTA. n ' ~ C VIRGINIA ELECTRIC AND POWER COMPANY
~9 OCI I A 9 sept (mber as,1979 Mr. James P. O'Reilly, Director Serial No. 79' Office of Inspection & Enforcement PSE&C/JMD:adw:mc U.S. Nuclear Regul_atory Comission Region II Docket No. 339 101 Marietta Street, Suite 3100 Atlanta, Georgia 30303
Dear Mr. O'Reilly:
On September 24, 1979, a report was made under the provisions of 10CFR50.55(e) concerning a potential unreviewed safety question based on Westinghouse information that the performance of non-safety grade equipment subjected to an adverse environment could impact the protect-tive functions perfomed by safety grade equipment.
In accordance with the reporting requirements of 10CFR21, the fol-lowing infomation is submitted:
A.
Name and address of reporting individual:
Mr. E. A. Baum, Executive Manager Licensing and Quality Assurance Virginia Electric and Power Company P. O. Box 26666 Richmond, Virginia 23261 B.
Facility, activity, and/or component affected:
North Anna Power Station, Unit 2 C.
Name of firm constructing the facility or supplying the component, activity or service:
Westinghouse Electric Corporation P. O. Box 355 Pittsburgh, Pennsylvania 15230 D.
Description of defect, deficiency, or failure to comply:
Westinghouse has informed Vepco that as part of a continuing review of the environmental qualifica-tions of Westinghouse supplied equipment, four (4) systems were identified which, if subjected to an adverse environment, could potentially lead to control system operation which may impact protec-tive functions. These systems are:
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Mr. James P. O'Reilly 2
- 1) Steam generator power operated relief valve control system
- 2) Pressurizer power operated relief valve control system
- 3) Main feedwater control system
- 4) Automatic rod control system E.
Date of determination of reportability:
September 24, 1979 F.
Similar components, activities, or services:
North Anna Unit 1 G.
Corrective action which has been, is being or will be taken, the in-dividual responsible and the length of time to complete the action:
Westinghouse has provided Vepco the information on the basis for these concerns and we are now reviewing these systems for North Anna Unit 2 to detemine if any unreviewed safety questions or deficiences exist. The review will be complete and the results available in our 30-day report.
H.
Other infomation:
None Any infomation not available at this time will be submitted in a follow-up letter as a 30-day report.
Should you require further infomation, please co act this of ce.
i uly d W n C. Brown, r.
ior Vice President-Po er Statio Engineering and onst uction cc: Director, Office of Inspection and Enforcement (3)
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