05000395/LER-1982-031, Forwards LER 82-031/03L-0.Detailed Event Analysis Encl

Forwards LER 82-031/03L-0.Detailed Event Analysis Encl

ML20028B699
Person / Time
Site:	Summer
Issue date:	11/24/1982
From:	Dixon O SOUTH CAROLINA ELECTRIC & GAS CO.
To:	James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML20028B700	List: 05000395/LER-1982-031, Forwards LER 82-031/03L-0.Detailed Event Analysis Encl 05000395/LER-1982-031-03, /03L-0:on 821030,w/plant in Mode 4,source Range Channel NI-32 Failed Low.Caused by Loose Connection on Dry Bulb Voltage Attenuator Connector.Connection Repaired & Channel Operable by 821101
References
NUDOCS 8212030164
Download: ML20028B699 (2)

LER-1982-031, Forwards LER 82-031/03L-0.Detailed Event Analysis Encl

Event date:
Report date:
3951982031R00 - NRC Website

text

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SOUTH CAROLINA ELECTRIC & GAS COMPANY post oppics 7s4 COLUMalA. SOUTH CAROB $N 218 '

O. W. OixON, JM.

vice PasseDENT

,Npyember 24.

1 2

NUCLEAR OpenanoNS Mr. James P. O'Reilly, Director U.S. Nuclear Regulatory Commission Region II, Suite 3100-101 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 82-031

Dear Mr. O'Reilly:

Please find attached Licensee Event Report #82-031 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 5 of Technical Specification 3.3.1

" Reactor Trip System Inctrumentation," on October 30, 19$2.

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

Ver tru yo s,

O. W. D xon, J.

CJM:0WD:dwf Attachment cc:

V.

C.

Summer A.

R. Koon T.

C. Nichols, Jr.

H. Radin G.

H. Fischer Site QA

0. W.

Dixon, Jr.

C. L. Ligon (NSRC)

H. N. Cyrus G. J. Braddick H. T. Babb J. L.

Skolds D.

A.

Nauman J.

B. Knotts, Jr.

M. B. Whitaker, Jr.

B.

A.

Bursey W.

A.

Williams, Jr.

I&E (Washington)

O.

S. Bradham Document Management Branch R.

B.

Clary INPO Records Center j

M. N. Browne NPCF File g

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h 8212030164 021124 O\\

PDR ADOCK 05000395 y

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Mr. James P. O'Reilly LER No.82-031 Page Two

' November 24, 1982

DETAILED' DESCRIPTION OF EVENT On October 30, 1982, with the Plant 1n Mode 4, Source Range

~

Channel NI-32 failed low.

The channel was declared ~ inoperable-per ' Technical Specification 3.3.1, Action Statement 5.

PROBABLE CONSEQUENCES No adverse consequences resulted from this event.

Source Range Channel NI-31 was operable at time of occurrence.

CAUSE(S) 0F THE OCCURRENCE Loss of signal was due to a loose connection at DB voltage attenuator connector.

l IMMEDIATE CORRECTIVE ACTIONS TAKEN Source Range Channel 32 Level Trip was immediately placed to bypass by Operations.

The connection to the DB voltage attenuator was resoldered.

Source Range Channel NI-32 ' was returned to service af ter satisfactory performance of the l

applicable Surveillance Test Procedure _on November 1, 1982.

ACTION TAKEN TO PREVENT RECURRENCE Except for the normal surveillance requirements on the Nuclear Instrumentation Channels to demonstrate operability, _ the i

licensee plans no further action at this time.

i i