ML19343A451

Responds to IE Bulletin 80-19 & Revision 1 Re Failures of mercury-wetted Matrix Relays in Reactor Protective Sys. Identified Relays Are Not Used in Facility.Four Manhours Expended for Investigation

ML19343A451
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 III)
References
IEB-80-19, NUDOCS 8009170422
Download: ML19343A451 (1)

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THE CINCINNATI GAS & ELECTRIC COMPANY crI CINCINN ATI.OHto 4 5201 September 2, 1980 C A. BORG M AN N SENSOR vtCE PRE 5sDENT U.nited 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:

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 f*

- p-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 SEP 5 1980 W.W.

Schwiers I

I b.

K.

Culver J.

R.

Schott J.

D. Flynn F. T.

Daniels W.

D. Waymire (Pink)

SEP o gg 8009170 4 2 2

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