ML20004B074

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Interim Deficiency Rept,Originally Reported on 810406 Re Galling of Discs & Seat Rings in Six Powell Gate Valves. Licensee Investigating Cause W/Assistance of Metallurgical Consultant.Rept Will Be Filed by 810710
ML20004B074
Person / Time
Site: Zimmer
Issue date: 05/21/1981
From: Borgmann E
CINCINNATI GAS & ELECTRIC CO.
To: Fiorelli G
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
References
10CFR-050.55E, 10CFR-50.55E, QA-1431, NUDOCS 8105270188
Download: ML20004B074 (1)


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THE CINCINNATI GAS & ELECTRIC COMPANY 16 CINCINNATL QHio 45201 May 21, 1981 QA-1431 C. A. 80ROMANN Steesce veCC Pets > Drest 4h U. S. Nuclear Regulatory Commission Region III

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, G.o' .j Attention: Mr. G. Fiorelli, Chief ,<.** '

Reactor Construction & Engineering Support Branch i f-RE: WM. H. ZIMMER NUCLEAR POWER STATION - UNIT I 10CFR50.55(e) M-27, GALLING OF POWELL VALVES DOCKET N0. 50-358, CONSTRUCTION PERMIT NO.

CPPR-88, W. O. #57300-957, JOB E-5590 Gentlemen:

On April 6,1981, the NRC Site Senior Resident Inspector was notified by phone of a possible 10CFR50.55(e) condition regarding galling of the discs and seat rings in six Powell Gate Valves supplied for the referenced project.

Cincinnati Gas & Electric Company is investigating the cause of this prablem with the assistance of a metallurgical consultant.

A report will be submitted by July 10, 1981.

Very truly yours,

'TNE CINCINNATI GAS & ELECTRIC COMPANY l W 2~

E. A. BORGMANN SENIOR VICE PRESIDENT DJS:ec cc: NRC Resident Inspector Attn: T. Daniels NRC Office of Inspection & Enforcement / 90/

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