ML19332B147

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Forwards 30-day Response to Item 1 of 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. No Subj Relays Used
ML19332B147
Person / Time
Site: Davis Besse 
Issue date: 08/26/1980
From: Crouse R
TOLEDO EDISON CO.
To: James Keppler
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
References
1-160, IEB-80-19, NUDOCS 8009260097
Download: ML19332B147 (2)


Text

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E N DO August 26, 1980

.: EDISON Docket No. 50-346 R.>4:t P Crc ~u License No. NPF-3 7,y,[?"'

w9 m m Serial No. 1-160 Mr. James G. Keppler Regional Director, Region III Of fice of Inspection and Enforcement U.S. Nuclear Regulatory Commission 799 Roosevelt Road Glen Ellyn, Illinois 60137

Dear Mr. Keppler:

This letter is in response to IE Bulletin 80-19, Revision 1, dated August 15, 1980 (Log No. 1-408), as applicable to Davis-Besse Nuclear Power Station Unit No.1.

Attac.hed is Toledo Edison's required 30 day response to Item No. 1.

Yours very truly, ff,=2: = -

RPC/TRp/prk Attachments cc:

U. S. Nuclear Regulatory Commission Office of Inspection & Enforcement Division of Reactor Operations Inspection Washington, D C.

20555 SEP 4g THE TOLEDO EDISON COMPANY EDISON PLAZA 300 MADISON AVENUE TOLEDO. OHIO 43652 8009260 @ r/

DOCKET No. 50-346 SERIAL NO. 1-160 ITEM 1:

Review your facility to determine whether C.P. Clare Model HG2X-1011 mercury-wetted relays are used in the logic matrix of the RPS.

If no such relays are used, you should submit a negative declaration to this effect and you need not respond to the remaining items in this bulletin.

Your negative declaration shall be submitted to the appropriate NRC regional of fice within thirty (30) days of the date of this bulletin and a copy forwarded to the Director, Division of Reactor Operations Inspection, Office of Inspection and Enforcement, NRC, Washington, D.C.

20555.

RESPONSE

An inspection of the Davis-Besse Nuclear Power Station Unit No. 1 (DB-1) RPS logic matrix has shown that no C.P. Clare Model HG2X-1011 relays are used within the RPS trip logic matrix. Toledo Edison is therefore exempt from the requirements pertaining to the additional items contained in IE Bulletin 80-19, Revision 1.

O e

F i

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