ML19337B390

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Responds to IE Bulletin 80-19, Failures of Mercury-Wetted Matrix Relays in Reactor Protective Sys of Operating Nuclear Power Plants Designed by C-E. Facilities Do Not Utilize Subj Relays
ML19337B390
Person / Time
Site: Cook  American Electric Power icon.png
Issue date: 09/02/1980
From: Maloney G
INDIANA MICHIGAN POWER CO. (FORMERLY INDIANA & MICHIG
To: James Keppler
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
References
AEP:NRC:00456, IEB-80-19, NUDOCS 8010020260
Download: ML19337B390 (1)


Text

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we lNDIANA & MICHIGAN ELECTRIC COMPANY P. O. Bo X 18 BOWLING GR E EN ST ATloH N EW YORK, N. Y.10004 September 2, 1980 AEP:NRC:00456 Donald C. Cook Nuclear Plant Unit Nos. 1 and 2 Docket Nos. 50-315 and 50-316 License Nos. DPR-58 and DPR-74 IE Bulletin 80-19 Mr. J. G. Keppler, Regional Director Office of Inspection and Enforcement U. S. Nuclear Regulate y Commission Region III 799 Roosevelt Road Glen Ellyn, Illinois 60137

Dear Mr. Keppler:

This letter is in response to IE Bulletin 80-19 entitled, l

" Failures of Mercury-Wetted M3trix Relays In Reactor Protective Systems l Of Operating Nuclear Power Plants Designed By Combustion Engineering."

Our review of the Cook Plant design has shown that mercury-wetted matrix l relays are not employed in the Reactor Protection System and therefore '

the concerns described in the subject Bulletin are not applicable to the f Cook Plant.

Our response to this Bulletin involved expending a total of 25 manhours for research, response and supervisory review and approval.

l l

Very truly yours, l

/ l

,/ .

i \

G P. Haloney' f Vice PresidentII cc: N. C. Mosely - NRC / ,

R. C. Callen '

G. Charnoff l J. E. Dolan D. V. Shaller - Bridgman R. W. Jurgensen R. S. Hunter

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