ML20077F271
| ML20077F271 | |
| Person / Time | |
|---|---|
| Site: | Summer  |
| Issue date: | 07/25/1983 |
| From: | Dixon O SOUTH CAROLINA ELECTRIC & GAS CO. |
| To: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| References | |
| NUDOCS 8308010316 | |
| Download: ML20077F271 (2) | |
Text
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SOUTH CAROLINA ELECTRIC & GMG OMPANY)/ON.7 4 T.,s,@. 5 no.1 ome. =
fY bl4 COLUMBIA. SOUTH CAROLfNA 29210 g
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7l & A10 : 5il nueaan or nar,' us July 25, 1 vice n..io."
o 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:
Vi rgil C. Summer Nuclear Station Docket No. 50/395 Operating License No. NPF-12 Special Report
Dear Mr. O'Reilly:
Please find attached a Special Report for Virgil C. Summer Nuclear i
Station.
This Fourteen Day Report is required by Technical Specification 6.9.2 as a result of entry into Action Statement 30 of Technical Specification 3.3.3.1 (Table 3.3-6, Item d.ii),
i
" Radiation Monitoring Instrumentation," on July 12, 1981.
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Should there-be any questions, please call us at your convenience.
Very truly yours,
- 0. W.
ixo, Jr.
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..Kuotts, Jr.
- Group / General Managers IEE (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.).
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a Mr. James P.
O'Reilly Special Report Page Two July 25, 1983 ACTION TAKEN At 2100 hours0.0243 days <br />0.583 hours <br />0.00347 weeks <br />7.9905e-4 months <br /> on July 12, 1983, with the Plant in Mode 1, Main Steam Line Radiation Monitor RMG-19B was declared inoperable because of spurious alarms with fluctuating meter indications.
RMG-19B is required to be operable in Modes 1 through 4.
Therefore, Action Statement 30 of Technical Specification 3.3.3.1 applied.
The preplanned alternate method of monitoring was implemented on July 13, 1983, at 2100 hours0.0243 days <br />0.583 hours <br />0.00347 weeks <br />7.9905e-4 months <br />, in accordance with Action Statement 30.
Personnel investigation of the spurious indications on the radiation monitor determined that the low range circuit board was causing the signal fluctuations.
CAUSE OF OCCURRENCE The cause of the occurrence is attributed t'o a component failure on the low range circuit board of RMG-19B.
PLANS AND SCHEDULE FOR RESTORING TO OPERABLE STATUS The projected date of repair of RMG-19B is dependent on the receipt of replacement parts which are presently on order from the manufacturer.
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