ML20024D911

LER 83-075/03L-0:on 830703,emergency Feedwater Valve IFV-3536 to Steam Generator a Tripped Shut on High Flow & Failed to Reset.Caused by Signal Comparator Card Failure. Card replaced.W/830801 Ltr

ML20024D911
Person / Time
Site:	Summer
Issue date:	08/01/1983
From:	Bouknight R, Dixon O SOUTH CAROLINA ELECTRIC & GAS CO.
To:	James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
References
LER-83-075-03L, LER-83-75-3L, NUDOCS 8308080416
Download: ML20024D911 (2)

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j gl oj 8; q q q }g EVENT OESCRIPTION AND PROSABLE CONSEQUENCES Aio l o l2 l lAt 2353 hours0.0272 days <br />0.654 hours <br />0.00389 weeks <br />8.953165e-4 months <br />, July 3,1963, with thWPlant in Mode 3, Bnergency Feedwater Valve l l o la l lIFV-3536 to "A" Steam. Generator tripped shut on high flow and failed to reset. g l,9 l l Subsequently the valve was declared inoperable and Action Statenent (a) of g

,,,; l Technical Specification 3.7.1.2, "Snergency Feedwater Systen," was entered.

, ,, , lThere were no adverse consequences due to this event. A Motor Driven Energency Feedwater Pump and Bnergency Feedwater Valve IFV-3531 were operable to supply "A" Steam Generator.

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. U. l g l 3l..g l%UI.3U..D l l j 38 _ 34 3. ,, 4. 49 4. .3 44 47 CAUSE OESCRIPTION ANO CORRECTIVE ACTIONS O27 l i j o l lThe cause of this event was due t$ failure of the signal conparator card. l l i l 1 l lThe card was replaced, the applicable surveillance test procedures were l lil 2 l lperfonned, and the system was declared opernble at 1345 hours0.0156 days <br />0.374 hours <br />0.00222 weeks <br />5.117725e-4 months <br />, July 4,1983. l l3l3llNo further corrective action is planned. l 11141l l

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. W SOUTH CAROLINA ELECTRIC & GAS COMPANY post oppica ?se COLuualA. SOUTH CAROUNA 29218 O. W. DIMON. JR.

vice , as sioeur August 1, 1983 NucLeam OpenatioNS Mr. James P. O'Reilly Regional Administrator U.S. Nuclear Regulatory Commission Region II, Suite 2900 101 Marietta Street, N.W.

Atlanta, Georgia 30303

SUBJECT:

Virgil C. Summer Nuclear Station Docket No. 50/395 Operating License No. NPF-12 Thirty Day Written Report LER 83-075

Dear Mr. O'Reilly:

Please find attached Licensee Event Report #83-075 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 3.7.1.2,

" Emergency Feedwater System," on July 4, 1983.

Should there be any questions, please call us at your convenience, very truly yours, O. W. ixo , .

RJB:OWD/mac/fjc Attachment cc: V. C. Summer C. L. Ligon (NSRC)

E. H. Crews, Jr. G. J. Braddick T. C. Nichols, Jr.,/O. W. Dixon, Jr. J. C. Miller E. C. Roberts J. L. Skolds H. N. Cyrus J. B. Knotts, Jr.

Group / General Managers I&E (Washington)

O. S. Bradham Document Management R. B. Clary Branch C. A. Price INPO Records Center A. R. Koon NPCF D. A. Lavigne File (Lic./Eng.)

J. L. Heilman OFF w..icgAL copy

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