05000395/LER-1983-017, Forwards LER 83-017/03L-0.Detailed Event Analysis Encl

Forwards LER 83-017/03L-0.Detailed Event Analysis Encl

ML20072N830
Person / Time
Site:	Summer
Issue date:	03/25/1983
From:	Dixon O SOUTH CAROLINA ELECTRIC & GAS CO.
To:	James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML20072N837	List: 05000395/LER-1983-017, Forwards LER 83-017/03L-0.Detailed Event Analysis Encl 05000395/LER-1983-017-03, /03L-0:on 830305,remote Info Acquisition Cabinet Experienced Electronic Problems Rendering Four Reactor Bldg Zone 3 Smoke Detectors Inoperable.Caused by Printed Circuit Card Failure.Card Replaced
References
NUDOCS 8304010623
Download: ML20072N830 (2)

LER-1983-017, Forwards LER 83-017/03L-0.Detailed Event Analysis Encl

Event date:
Report date:
3951983017R00 - NRC Website

text

.>

i_

SOUTH CAROLINA ELECTRIC & GAS COMPANY FOS, OFFICE 764 COLUMBIA. SOUTH CAROLINA 29218 o. W. DixON, JR.

u f,'J"o',*,',',",'

March 25, 1983 o

Mr. James P. O'Reilly cs

'O Regional Administrator U.S. Nuclear Regulatory Commission g$5 kT

.z Region II, Suite 2900 101 Marietta Street, N.W..

g3

[."

Atlanta, Georgia 30303 p

t'.

SUBJECT:

Virgil C. Summer Nuclear SEEtion' b Docket No. 50/395 Operating License No. NPF-k4 Thirty Day Written Report LER 83-017

Dear Mr. O'Reilly:

Please find attached Licensee Event Report #83-017 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 3.3.3.7, " Fire Detection Instrumentation," on March 5, 1983.

Should there be any questions, please call us at your convenience.

Ver truly yours, O. W.

ixon, r.

HCF:OWD/dwf Attachment cc:

V.

C.

Summer G.

J.

Braddick T.

C. Nichols, Jr.,/O. W. Dixon, Jr.

J.

C. Miller E.

C.

Rcberts J.

L.

Skolds H.

N.

Cyrus J.

B.

Knotts, Jr.

Group / General Managers B. A.

Bursey R.

B.

Clary I&E (Washington)

C.

A.

Price Document Management O.

S. Bradham Branco A.

R.

Koon INPO Records Center D.

A.

Lavigne NPCF C.

L. Ligon (NSRC)

File (Lic./Eng.)

8304010623 830325

- I#d" COP %j~

PDR ADOCK 05000395

~

S PDR 76 4LE

~

O Mr. James P. O'Reilly LER No.83-017 Page Two March 25, 1983 1

DETAILED DESCRIPTION OF EVENT On March 5, 1983, with the Plant in Mode 1, Remote Information Acquisition Cabinet (RIAC) #7 experienced an electronic component failure and subsequently rendered four (4) smoke detectors in Zone

1. 3 of the Reactor Building inoperable.

The failure of two (2) of' these detectors located in Room 36-01 SE initiated an entry into Action Statement (a) of Technical Specification 3.3.3.7.

PROBABLE CONSEQUENCES As the Reactor Building air temperature was monitored hourly for the duration of the event, the possibility that any fire remained undetected was minimized.

CAUSE(S) OF THE OCCURRENCE The event is attributed to the failure of a printed circuit card in the electronic circuitry of the RIAC panel.

IMMEDIATE CORRECTIVE ACTIONS TAKEN

'Upon detection of the failed smoke detectors, a maintenance work l

request was issued to investigate the problem.

Action was l

initiated to record the Reactor Building temperature on an hourly l

basis per Action Statement (a) of Technical Specification 3 3.3.7.

[

I Upon identification of the failed printed circuit card, it was l

replaced.

The system was reset and returned to operable status within one hour and 50 minutes of the event initiation.

l ACTION TAKEN TO PREVENT RECURRENCE The licensee considers this event to be an isolated occurrence and plans no further action except for normal surveillance testing.

l i

i l

l t