ML20076E574
| ML20076E574 | |
| Person / Time | |
|---|---|
| Site: | Nine Mile Point  |
| Issue date: | 08/09/1983 |
| From: | Manno S NIAGARA MOHAWK POWER CORP. |
| To: | Starostecki R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| References | |
| REF-PT21-83 10CFR-050.55E, 10CFR-50.55E, 7140, NUDOCS 8308240550 | |
| Download: ML20076E574 (2) | |
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' M V NIAGARA RUMOHAWK NBAGARA MOHAWK POWER CORPORATION /300 ERIE BOULEVARD WEST, SYRACUSE, N.Y.13202/ TELEPHONE (315) 474-1511 SAMUEL F. MANNO VICE PRESIDENT NUCLE AR CONSTRUCTION August 9, 1983 (7140)
Mr. R. W. Starostecki, Director U.S. Nuclear Regulatory Commission Region I Division of Project and Resident Programs 631 Park Avenue King of Prussia, PA 19406 Re: Nine Mile Point Unit 2 Docket No. 50-410
Dear Mr. Starostecki:
Enclosed is an interim report in accordance with 10CFR50.55(e) for the problem concerning ITE Gould circuit breakers in post-LOCA hydrogen recombiners supplied by Rockwell International.
This condition was reported via telecon to Mr. H. Kister of your staff on March 28, 1983, as a potentially reportable deficiency. An interim 30-day report was submitted via our letter dated April 26, 1983.
Very truly yours,
\\
y.,F. Manno Vice President Nuclear Construction SFM/TL:ja Enclosure xc: Director of Inspection and Enforcement U.S. Nuclear Regulatory Commission Washington, DC 20555 Mr. R. Gramm, Resident Inspector 8308240550 830809 PDR ADOCK 05000410 s
PDR 9
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NIAGARA M0 HAWK POWER CORPORATION NINE MILE POINT - UNIT 2 DOCKET N0. 50-410 Interim Report for a Problem Concerning a Circuit Breaker in the Hydrogen Recombiner Description of the Problem Rockwell International is currently undertaking a program to establish the IEEE 323 qualification status of the post-LOCA hydrogen recombiner. As a result of this ongoing environmental qualification testiag, Rockwell International has determined that the ITE Gould circuit breaker (3-pole, 600-V ac, fully enclosed, thermal magnetic, P/N EF3-8015) failed to pass the test.
The circuit breaker is located in the hydrogen recombiner power cabinet.
The purchase specification called for environmental qualification of hydrogen recombiners in accordance with IEEE 323-1974 requirements. This problem was reported by Rockwell International to the Nuclear Regulatory Commission, under 10CFR21, via Rockwell International Letter No. 83ESG-1483 dated March 11, 1983 (enclosed).
This problem is under investigation by Rockwell International and Niagara Mohawk, Corrective actions will be taken based upon the results of this investigation. A final report will be submitted by September 9, 1985.
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