ML20092K552

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Special Rept Spr 84-007:on 840601,during Scheduled Surveillance,Diesel Generator A,XEG-0001A,experienced Invalid Failure.Caused by High Jacket Water Temp Due to Diesel Fuel Leak from Injectors.Injectors Replaced
ML20092K552
Person / Time
Site: Summer South Carolina Electric & Gas Company icon.png
Issue date: 06/14/1984
From: Dixon O
SOUTH CAROLINA ELECTRIC & GAS CO.
To: James O'Reilly
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
References
SPR-84-007, SPR-84-7, NUDOCS 8406280425
Download: ML20092K552 (2)


Text

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y, SOUTH CAROLINA ELECTRIC & GAS COMPANY POST OFFtCE 764 COLuuerA south CAnoLINA 29218 l l

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JuON h v;C n e sio"I 984 NUCLE AN OPERATIONS Mr. James P. O'Reilly l Regional Administrator U.S. Nuclear Regulatory Commission Region II, Suite 2900 101 Marietta Street, N.W.

Atlanta, Georgia 30323

SUBJECT:

Virgil C. Summer Nuclear Station Docket No. 50/395 Operating License No. NPF-12 Special Report (SPR 84-007)

Dear Sir:

Please find attached a Special Report for the Virgil C. Summer Nuclear Station. This Report is being submitted pursuant to Regulatory Guide 1.108, Periodic Testing of Diesel Generator Unit, Revision 1, August 1977, Section C.3.b.

Should there be any questions, please call us at your convenience.

Very truly yours, hh O. W. D xon r.

RBJ:OWD/dwf Attachment cc: V. C. Summer K. E. Nodland T. C. lichols, Jr./O. W. Dixon, Jr. R. A. Stough E. H. Crews, Jr. G. Percival E. C. Roberts C. W. Hehl W. A. Williams, Jr. J. B. Knotts, Jr.

D. A. Nauman I&E Washington Group Managers Document Management Branch O. S. Bradham INPO Records Center C. A. Price ANI Library D. A. Lavigne NPCF J. F. Heilman File C. L. Ligon (NSRC)

, OFFICIAL COPY 8406280425 840614 PDR ADOCK 05000395 S PDR a e I

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Mr. James P. O'Reilly SPR 84-007 Page Two June 14, 1984 On June 1, 1984, during scheduled surveillance activity, the Licensee experienced an invalid failure on Diesel Generator Unit "A", XEG-0001A. The failure was because of High Jacket Water Temperature, which resulted from two (2) injectors leaking diesel fuel into-the jacket water cooling system causing the thermostatic l control valve to stick. It should-be noted that the High Jacket Water Temperature trip is bypassed in the Emergency Operating Mode.

The injectors were replaced, and the jacket water cooling system was drained and flushed. The unit was satisfactorily tested and declared operable at 0645 hours0.00747 days <br />0.179 hours <br />0.00107 weeks <br />2.454225e-4 months <br /> on June 2, 1984. The unit was inoperable for 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> and 15 minutes.

The Licensee has had no valid failures on the subject unit, and the current surveillance test interval is every 31 days.

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