ML20028B639

Ro:On 821110,during Mode 2 Operation,Radiation Monitor RM-G19C (Main Steam Line C Monitor) Declared Inoperable Due to Erratic Indications.Caused by Moisture Accumulation. Monitor Will Be Changed Prior to 830101

ML20028B639
Person / Time
Site:	Summer
Issue date:	11/23/1982
From:	Dixon O SOUTH CAROLINA ELECTRIC & GAS CO.
To:	James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
References
NUDOCS 8212030108
Download: ML20028B639 (2)

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SOUTH CAROLINA ELECTRIC & GA3 COMPANY

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COLUMeiA. south CAROUNA 29218 lj ,

O. W. DixoN, JR.

Vice PassioaNT ,f suctran o....Tio

• November 23, 1982' '30 A S. 47 ,

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 Special Report

Dear Mr. O'Reilly:

Please find attached a Special Report for Virgil C. Summer Nuclear Station. This report is required by Technical Specification 6.9.1.13.(b) as a result of entry into Action Statement 30 of Technical Specification 3.3.3.1, " Radiation Monitoring Instrumentation," on November 10, 1982.

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

Very truly yours,

, f: a

0. W. ixon, Jr.

HCF:0WD:dwr 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 M. N. Browne NPCF File ,

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8212030108 821123 '/

gDRADOCK 05000395 PDR

Mr. James P. O'Reilly Special Report Page Two November 23, 1982 DETAILED DESCRIPTION OF EVENT On November 10, 1982, with the Plant in Mode 2, Radiation Monitor RM-G19C (Main Steam Line C monitor) was declared inoperable because of erratic indications. Technical Specification 3.3.3.1 requires this monitor to be operable for Modes 1, 2, 3, and 4.

ACTION TAKEN The station pre-planned alternate method of monitoring was established subsequent to the monitor being declared inoperable per Action Statement 30 of Technical Specification 3.3.3.1. ,

CAUSE FOR THE INOPERABILITY The cause for the inoperability of RM-G19C is attributed to moisture accumulation in the connector of the detector to the preamp cable.

PLANS AND SCHEDULE FOR RESTORING TO OPERABLE STATUS A modification has been approved to interchange models for the Main Steam Line monitors due to their inherent associated steam environment. RM-G190 is currently planned to be interchanged and returned to operable status prior to January 1,1983 l

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