ML20106J610

Confirms Agreement to Replace Trip Units of Feeder Breakers for Vital Buses VMCC-1A2 & 1B2 During First Unscheduled Plant Shutdown,Per SEP Topic VI-7.C.1,App K Re Electrical Instrumentation & Control re-review

ML20106J610
Person / Time
Site:	Oyster Creek
Issue date:	10/25/1984
From:	Fiedler P GENERAL PUBLIC UTILITIES CORP.
To:	Paulson W Office of Nuclear Reactor Regulation
References
TASK-06-07.A1, TASK-6-7.A1, TASK-RR NUDOCS 8411010276
Download: ML20106J610 (2)

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GPU Nuclear Corporation NUOIM7 100 Interpace Parkway Parsippany, New Jersey 07054-1149 (201)263-6500 TELEX 136-482 Writer's Direct Dial Number:

October 25, 1984 Mr. Walter Paulson, Acting Chief Operating Reactors Branch #5 U.S. Siclear Regulatory Commission Washington, D. C.

20555

Subject:

Oyster Creek Nuclear Generating Station (0CNGS)

Docket No. 50-219 SEP Topic No. VI-7.C.1, Appendix K Electrical Instrumentation and Control Re-review On September 3, 1984 Mr. C. Grimes (Chief-NRC SEP Branch) contacted GPUN by telephone confirming that the NRC had received and reviewed our submittal (dated July 30,1984) regarding the subject matter. Mr. Grimes stated that the NRC staff is in agreement with the conclusion and the analysis contained in the submittal. The analysis concluded that in order to maintain the integrity of the power supply to the vital buses, the trip units of the feeder breakers for vital buses VMCC-1A2 and 1B2 should be replaced. However, Mr. Grimes emphasized that, contrary to the proposed schedule provided in our submittal, GPUN should not wait until the next refueling outage (cycle 11 outage) for the replacement. Mr.

Grimes requested that GPUN replace these trip units during a first unscheduled shutdown of the Oyster Creek plant after receiving them from the supplier.

In our subsequent phone conversation with Mr. Grimes, GPUN agreed to replace these trip units during the first unscheduled plant-shutdown of sufficient length (minimum of 5 days) to perform the installation and testing activities following the receipt of the trip units from our supplier. The anticipated lead time for these units is approximately 10 weeks.

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I GPU Nuclear Corporation is a subsidiary of General Pubhc Uhhhes Corporation

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~ 6 ep - Mr. Grimes requested a letter from us documenting our agreement.

Very truly yours, A_,

'M B. Fiedler Vice President and Director 1r/0418e cc: Administrator-Region I U.S. Nuclear Regulatory Comission 631 Park Avenue King of Prussia, Pa.

19406 NRC Resident Inspector Oyster Creek Nuclear Generating Station Forked River, N. J.

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