05000395/LER-1982-061, Forwards LER 82-061/03L-0.Detailed Event Analysis Encl

Forwards LER 82-061/03L-0.Detailed Event Analysis Encl

ML20070Q217
Person / Time
Site:	Summer
Issue date:	01/17/1983
From:	Dixon O SOUTH CAROLINA ELECTRIC & GAS CO.
To:	James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML20070Q234	List: 05000395/LER-1982-061, Forwards LER 82-061/03L-0.Detailed Event Analysis Encl 05000395/LER-1982-061-03, /03L-0:on 821218,diesel Generator B (XEG001B) Failed Monthly Operability Test by Tripping on Low Lube Oil Pressure.Cause Unknown.Diesel Generator B Satisfactorily Restarted within 30 Minutes
References
NUDOCS 8301260447
Download: ML20070Q217 (2)

LER-1982-061, Forwards LER 82-061/03L-0.Detailed Event Analysis Encl

Event date:
Report date:
3951982061R00 - NRC Website

text

!

6 SOUTH CAROLINA ELECTRIC & GAS COMPANY Post oprics to4 CotuustA, south CAROLINA 29218 O. W. OlXoN. JR.

vtCE PRESCENT svet.. o...rio=.

January 17, 1983 Mr. James P. O'Reilly, Director wW U.S. Nuclear Regulatory Commission Region II, Suite 3100 h

101 Marietta Street, N.W.

r Atlanta, Georgia 30303

,o

SUBJECT:

Vir611 C.

Summer Nuclear Station e o Docket No. 50/395 (c

Operating License No. NPF-12' i,

Thirty Day Written Report en LER 82-061

Dear Mr. O'Reilly:

Please find attached Licensee Event Report #82-061 for Virgil C.

Summer Nuclear Station.

This Thirty Day Report is required by Technical Specification 6.9 1.13.(b) as a result of entry into Action Statement (a) of Technical Specification 3.8.1.1 Sources," on December 18,19$2.

" Electrical Power Systems, A.C.

This report is also intended to satisfy the reporting requirements of Technical Specification 4.8.1.1.3 Should there be any questions, please call us at your convenience.

Very truly yours, O. W. Dixon, Jr.

HCP:0WD:dwr Attachment cc:

V.

C.

Summer A. R. Koon T.

C. Nichols, Jr.

G.

D. Moffatt E.

C.

Roberts Site QA

0. W. Dixon, Jr.

C. L. Ligon (NSRC)

H. N. Cyrus G. J. Braddick H. T.

Babb J. L.

Skolds D.

A. Nauman J. B. Knotts, Jr.

M.

B.

Whitaker, Jr.

B.

A. Bursey W.

A.

Williams, Jr, I&E (Washington)

O.

S.

Bradham Document Management Branch R.

B.

Clary INPO Records Center M. N. Browne NPCF File C'J01260447 830117

{DRADOCK05000 g

a

nN..

Mr. James P. O'Reilly LER No.82-061 Page Two January 17, 1983 DETAILED DESCRIPTION OF EVENT l

l On December 18, 1982, at 0705 hours0.00816 days <br />0.196 hours <br />0.00117 weeks <br />2.682525e-4 months <br /> with the Plant in Mode 2, Surveillance Test Procedure (STP) 125.002, " Diesel Generator Operabili.ty Test," was performed unsatisfactorily on Diesel Generator B (XEG001B).

The Diesel Generator B tripped on low lube oil pressure and was subsequently declared inoperable.

This is considered to be a valid start failure and is the first failure in the last one hundred valid tests for Diesel G3nerator B.

At 0730 hours0.00845 days <br />0.203 hours <br />0.00121 weeks <br />2.77765e-4 months <br />, the diesel was restarted to iniestigate the low lube oil pressure condition.

The lube oil pressure was acceptable.

The diesel generators are tested in accordance with Technical Specification 3.8.1.1 and Regulatory Guide 1.108.

PROBABLE CONSEQUENCES There were no adverse consequences as the applicable Technical Specification Action Statement was met during this event.

CAUSE(S) OF THE OCCURRENCE The cause of the event is unknown.

Upon restart, the lube oil pressure was within tolerance.

To date, Diesel Generator B has experienced no other problems with lube oil pressure.

IMMEDIATE CORRECTIVE ACTIONS TAFEN The immediate corrective action taken was to declare the diesel generator inoperable and perform the surveillance testa required by Action Statement (a) of Technical Specification 3.8.1.1.

More specifically, STP-125.002 was performed satisfactorily on Diesel Generator A (XEG001A) to ensure its operability, and STP-125.001 aas performed satisfactorily on the required electrical power system breaker alignments.

A Maintenance Work Request was issued to investigato the lube oil pressure switches with no resulting problems identified.

Diesel Generator B was returned to operable status at 1355 hours0.0157 days <br />0.376 hours <br />0.00224 weeks <br />5.155775e-4 months <br /> on Decenber 18, 1982, upon the satisfactory completion of STP-125.002.

ACTION TAKEN TO PREVENT RECURRENCE As Diesel Generator B has experienced no other problems with lube oil pressure to date, the Licensee plans no further action for this event other than the normal surveillance testing.

This is the first failure in the last one hundred valid tests.

Per Technical Specification Surveillance Requirement 4.8.1.1.3 and Regulatory Position C.3.b of Regulatory Guide 1.108, the surveillance testing f requency will continue "at least once every 31 days" as required.