ML19351D162

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Responds to IE Bulletin 80-19 & Revision 1, Failures of Mercury-Wetted Matrix Relays in Reactor Protective Sys of Operating Nuclear Power Plants Designed by C-E. Mercury-wetted Relays Not Utilized at Facility
ML19351D162
Person / Time
Site: Zimmer
Issue date: 09/02/1980
From: Borgmann E
CINCINNATI GAS & ELECTRIC CO.
To: James Keppler
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
References
IEB-80-19, NUDOCS 8010090114
Download: ML19351D162 (1)


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igffgD!lYD0fiEIfiE80Fi THE CINCINNATI GAS & ELECTRIC COMPANY

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,o September 2, 1980 c 4.sonouann SE **'OR vacc PRE 5*DE NT United States Nuclear Regulatory Commission Region III 799 Roosevelt Road Glen Ellyn, Illinois 60137 Attention: Mr. James G. Keppler, Regional Director RE: WM. H. ZIMMER NUCLEAR POWER STATION UNIT 1 - IE BULLETIN 80-19 and REV. 1 FAILURE OF MERCURY WETTED RELAYS IN RPS SYSTEMS, DOCKET #50-358, W.O. 57300, JOB E-5590, ITEM #956, IE BULLETIN FILE Gentlemen:

1 0 Mercury wetted relays are not utilized in the Reactor Protection System at the Wm. H. Zimmer Nuclear Power Station - Unit 1. IE Bulletin 80-19 is therefore not applicable to this facility and no further response is required.

With regards to the question raised in your cover letter of July 31, 1980, please be advised that between ourselves and our supplier we expended approximately four manhours to investigate the status of mercury wetted relays on the Zimmer facility.

Very truly yours, THE CINCINNATI GAS & ELECTRIC COMPANY l By E. A. Borgmann WPC:mjl ,

cc: NRC Office of Inspection and Enforcement R. F. Scheibel R. E.-Cotta C. W. Beringhaus H. C. Brinkmann *EP 0 5 1980 W. W. Schwiers .

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