ML19210C882

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Forwards Response to IE Bulletin 79-23, Potential Failure of Emergency Diesel Generator Field Exciter Transformer. Full Load Test of Emergency Diesel Generators Will Be Completed Before Fuel Loading
ML19210C882
Person / Time
Site: Mcguire, McGuire  Duke Energy icon.png
Issue date: 11/01/1979
From: Parker W
DUKE POWER CO.
To: James O'Reilly
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
References
IEB-79-23, NUDOCS 7911200254
Download: ML19210C882 (2)


Text

. lC DUKE POWER COMPANY ac w 3 ve, s POWER Ut:1LDING 422 SOliTH CHt HCH STREET, CHAHLOTTE, N. C. asa.m w t LU AM O. PA R M E R, J R.

v.cr eacs.cc~1 November 1, 1979 Tot t -o c- A c >:4 Sicaaa Pacowenow 3'3-4 : e 3 Mr. J. P. O'Reilly, Director U.S. Nuclear Regulatory Commission Region II 101 Marietta Street, Suite 3100 Atlanta, GA 30303 Re: McGuire Nuclear Station IE Bulletin 79-23 RII:JP0 50-369 and 50-370

Dear Mr. O'Reilly:

Attached is Duke Power Company's response to IE Bulletin 79-23 which was transmitted in your letter of September 12, 1979.

10 V y truly yours, j N

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.- w- 0. L-

' William O. Parker, Jr. #

THH/sch Attachment cc: U.S. Nuclen.i Regulatory Commission Office of Inspection & Enforcement Division of Reactor Operation Inspection Washington, DC 20555 bt b b ', ,?

SPRoGeg Anniversary

    • owr R " 7 9112 00 h 3/ O

e t McGuire Nucl' ear Station Response to II: Bulletin 79-23

1. A review of the design of McGuire Nuclear Station has revealed that connections have not been made between low KVA rated transformers and high KVA rated emergency diesel generators without adequate limitations on the flow of circulating currents.
2. The 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> full-load test of the McGuire Unit 1 emergency diesel generators will be complete by January 1, 1980. A schedule for conducting this test on the Unit 2 emergency diesel generators has not yet been developed, but the test will be complete prior to Unit 2 fuel loading. This testing of the McGuire emergency diesel generators is in accordance with the guidelines specified in item 2 of the bulletin.

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