ML20077H770
| ML20077H770 | |
| Person / Time | |
|---|---|
| Site: | Summer  |
| Issue date: | 06/30/1983 |
| From: | Dixon O SOUTH CAROLINA ELECTRIC & GAS CO. |
| To: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| References | |
| NUDOCS 8308110288 | |
| Download: ML20077H770 (2) | |
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SOUTH CAROLINA ELECTRidl&f, GAS COMPANY voss orrsca bsN h ?,
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a COLuusiA. south CAROLINA 29218 *
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O. W. DixoN JR.
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vice P.ssipaNT 2.' 2 4f June 30, 198 x",
Nucte. or...s.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:
Virgil C. Summer Nuclear Station Docket No. 50/395 Operating License /N6. NPF-12 Special Report
Dear Mr. O'Reilly:
Please find attached a Special Report for Virgil C.
Summer Nuclear 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 2d.ii),
" Radiation Monitoring Instrumentation," on June 17, 1983.
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Should there be any questions, please call us at your convenience.
s Very truly yours,
/- <
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- s O. W.
lxon, Jr.
CJM:OWD/dwf 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 J.
B.
Knotts, Jr.
H. N.
Cyrus 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.)
w' opiqCiAL COf 8308110280 830630
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"x Mr., James P. O'Reilly Special-Report Page Two i
June 30, 1933 i
ACTION TAKEN:
i i
-At 1510 hours0.0175 days <br />0.419 hours <br />0.0025 weeks <br />5.74555e-4 months <br />'on June 17, 1983, with the Plant operating in Mode 1, 4
Main Steam Line Radiation Monitor RM-Gl9A was declared inoperable because of spurious alarms with fluctuating meter indications.
i RM-Gl9A is required to be operable while in Modes 1 through 4; therefore, Action Statement 30 of Technical Specification 3.3.3.1 i
applied.
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The preplanned' alternate method of monitoring was implemented on-j June 19, 1983, at 1430 hours0.0166 days <br />0.397 hours <br />0.00236 weeks <br />5.44115e-4 months <br />, in accordance with Action Statement 30.
j Personnel investigating the spurious indication on the radiation 1.
monitor determined that the high range amplifier circuit board was i
causing the signal fluctuation.
The circuit board was replaced and
)
operation returned to normal.
RM-Gl9A was returned to operable status at 1400 hours0.0162 days <br />0.389 hours <br />0.00231 weeks <br />5.327e-4 months <br /> on June 21, 1983, upon the completion of a satisfactory channel calibration and operational test with the
' appropriate surveillance test procedure.
i.
i j
_CAUSE OF OCCURRENCE j
The cause of the occurrence is attributed to a component failure on l-the high range amplifier circuit board of RM-Gl9A.
l j
PLANS AND SCHEDULE FOR RESTORING TO OPERABLE STATUS j
.RM-Gl9A was returned-to operable status at 1400 hours0.0162 days <br />0.389 hours <br />0.00231 weeks <br />5.327e-4 months <br /> on June 21, i
1983.- The licensee plans rus additional action in reference to this component failure.
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