ML20140F612
| ML20140F612 | |
| Person / Time | |
|---|---|
| Site: | Summer  |
| Issue date: | 06/03/1985 |
| From: | Dixon O SOUTH CAROLINA ELECTRIC & GAS CO. |
| To: | Grace J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| References | |
| SPR-85-003, SPR-85-3, NUDOCS 8507120141 | |
| Download: ML20140F612 (2) | |
Text
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no SOUTH CAROLINA ELECTRIC & GAS COMPANY PC.T OFFICE 764
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COLuualA. SOUTH CAROUNA 29218
/,r,, 6 O. W. Dixon. Jn.
vier pne.*'"'
June 3, 1985 uucte.n onenation.
Dr..J.
Nelson Grace Regional Administrator U.S.
Nuclear Regulatory Commission Suite 2900 101 Marietta Street, NW Atlanta, Georgia 30323
SUBJECT:
Virgil C.
Summer Nuclear Station Docket No. 50/395 Operating License No. NPF-12 f
Special Report (SPR 85-003)
Dear Dr. Grace:
Attached is a Special Report for the Virgil C.
Summer Nuclear Station.
This Special Report is required by Section 6 of the' Technical Specifications.
'Should there be any questions, please call us at your convenience.
3r ly yours, k'
/
W.
ixon, Jr.
RMF:OWD/ led Attachment cc:
V.
C.
Summer K.
E.
Nodland T.
C.
Nichols, Jr./0.
W.
Dixon, Jr.
R.
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Stough E.
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Crews, Jr.
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Roberts C.
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Williams, Jr.
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Knotts, Jr.
D.
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Nauman S.
D.
Hogge Group Managers I&E Washington O.
S.-Bradham Document Management C.
A.
Price-Branch S.
R.
Hunt INPO Records Center J.
F.
Heilman ANI Library C.
L. Ligon-(NSRC)
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Nelson Grace SPR 85-003 Page Two June 3, 1985 EVENT DESCRIPTION on May 4, 1985 during surveillance testing of Diesel Generator "B",
uneven exhaust temperatures were observed.
The unit was chutdown and the cause of the uneven temperatures was determined to be a blown o-ring on the air intake header which resulted in a reduction of scavenger air pressure.
ACTION TAKEN-The o-ring on the air intake header was replaced; surveillance testing was satisfactorily performed; and the unit was declared operable at 0745 hours0.00862 days <br />0.207 hours <br />0.00123 weeks <br />2.834725e-4 months <br />, May 7, 1985.
The manufacturer had not previously recommended o-ring replacement during p r ev e n t iv e maintenance.
However, the o-rings will be ad d ed to the p r ev e n t iv e maintenance program for replacement every four years.
The applicable procedure will be revised to include instructions for o-ring replacement.
This action will be completed by July 1,
1985.
COMMENTS Based'on the criteria. set forth in Regulatory Guide 1.108, this is classified as an invalid failure.
The unit was in a stable condition and could have fulfilled its function in case of an emergency with no damage to the diesel generator unit.
As of May 27, 1985, Diesel Generator "B" has had one failure in the last 100 valid tests and Diesel Generator "A" has had three.
The diesel generators are presently being tested every three days on a staggered' basis.
Thirteen valid successful tests are required in order to satisfy the requirements for decreasing surveillance testing to every thirty-one days on a staggered basis.
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