ML19336A220

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 Are Not Used at Facility

ML19336A220
Person / Time
Site:	Fermi
Issue date:	09/02/1980
From:	Hines E DETROIT EDISON CO.
To:	James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
References
EF2-49-839, IEB-80-19, NUDOCS 8010220059
Download: ML19336A220 (3)

Text

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. Edward Mines gm rf Y .

ASSis!801 V<e Pfe54 dent

. ouai.ty Assurance

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- 2000 Second A sum memnu a y sw son gvenue September 2, 1980 i- EF2-49,839 l Mr. James G. Keppler l -Regional Director.

L .U.S. Nuclear Regulatory Commission Region III 799 Roosevelt Road Glen Ellyn, Illinois 60137 i

Reference:

Enrico Fermi Power Plant, Unit 2 ~

USNRC Licensina Docket: 50-341 USNRC IE Bulletin 80-19 (7-31-80)

USNRC IE Bulletin 80-19, Rev. 1 (8-15-80)

Subject:

Detroit Edison Response to NRC IE Bulletin 80-19, Rev. 1

Dear Mr. Keppler:

I

-The Project Engineering Organization for Enrico Fermi Power

-Plant,. Unit 2 has reviewed the Reactor Protective Systems for applications of the C. P. Clare Model.HG2X-1011 mercury -

wetted matrix relays as directed in the subject Bulletin.

The review determined that the C. P. Clare Model HG2X-1011 mercury - wetted relays are not used in the logic matrix of L the- Enrico Fermi 2 Reactor Protective Systems; hence, no )

. corrective action is necessary.

! Should you require additional information from Detroit Edison L in this matter, please advise us.

'Very truly yours, l <. MW j.

L ;EH/JDR/Im 1

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Mr.' James G. Keppler. . September 2,-1980 J; _ Page 2: .EF2-49,839 cc: . Director-Divisiorior Reactor Construction: Inspection Office of- Inspection and Enforcement -

U.S. Nuclear Regulatory Commission Washington, D.C. 20555 Director.

Division of Reactor Operations Inspection Office of: Inspection and Enforcenent U.S. Nuclear Regulatory. Commission Washington, D.C. 20555 Director

- Division of Operating Reactors Office of Nuclear. Reactor Regulation U.S. Nuclear Regulatory Commission Washington, D.C. 20555 Mr. Bruce Little, Resident Inspector U.S. Nuclear Regulatory Commission Resident Inspector's Office 6450-North Dixie Highway

-Newport, Michigan. 48166-l

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