ML20074A204

Interim Deficiency Rept Re Misapplication of Ite Gould Circuit Breakers in post-LOCA Hydrogen Recombiners Supplied by Rockwell Intl.Initially Reported on 830328.Matter Under Investigation.Final Rept by 830808.Reported Per Part 21

ML20074A204
Person / Time
Site:	Hatch, Nine Mile Point, Palo Verde, Fermi, Byron, Clinton, LaSalle, 05000000, Shoreham, Hartsville, Phipps Bend
Issue date:	04/26/1983
From:	Manno S NIAGARA MOHAWK POWER CORP.
To:	Starostecki R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML20074A205	List: ML20074A204 ML20074A222
References
REF-PT21-83 10CFR-050.55E, 10CFR-50.55E, 6489, NUDOCS 8305120392
Download: ML20074A204 (2)

Text

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M Y NIAGARA RuMOHAWK NIAGARA MOHAWK POWER CORPORATION /300 ERIE BOULEVARD WEST. SYRACUSE. N Y.13202/ TELEPHONE (315) 474-1511 April 26,1983 (6489)

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 flo. 50-410 Cear Mr. Starostecki:

Enclosed is a 30-day interim repcrt in accordance with 10CFR50.55(e) for '

the pechlem concerning ITE Gould circuit breakers in post-LOCA hydroger recombiners supplied by RcckwelI International. This condition was reported '

via telecon to Mr. H. Kister of your staff on Marca 28, 1933 as a potentially reportable deficiency.

Very truly yours, S. F. Manno Vice President Nuclear Construction SFM/TL:ja xc: Director of Inspection and Enforcement U.S. Nuclear Regulatory Commission Washington, DC 20555 Mr. R. D. Schulz, Resident Inspector 8305120392 930426 PDR S

ADOCK 05000410 PDR 3

W

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 testing, Rockwell International has determined that the ITE Gould circuit breker (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 recombined power' cabinet. The purchase specification called for environmental qualification of hydrogen recombiners in accordance with IEEE 323-1974 requirements. This problen wcs reported by Rockwell International to the Nuclear Regulatory Commission, under 10CFR21, via Rockwell International Letter No. 83ESG-1483 datec March 11, 1983 (enclosed).

The matter is still under investigation and a final report will be submitten by August 8, 1983.

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