05000280/LER-1980-051-03, /03L-0:on 800813,discharge Tunnel Radiation Monitor Found Out of Svc During Release of Liquid Waste Test Tank A.Caused by Defective Circuit Card.Replaced Defective Card

/03L-0:on 800813,discharge Tunnel Radiation Monitor Found Out of Svc During Release of Liquid Waste Test Tank A.Caused by Defective Circuit Card.Replaced Defective Card

ML18139A509
Person / Time
Site:	Surry
Issue date:	09/12/1980
From:	Joshua Wilson VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.)
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML18139A508	List: 05000280/LER-1980-051-03, /03L-0:on 800813,discharge Tunnel Radiation Monitor Found Out of Svc During Release of Liquid Waste Test Tank A.Caused by Defective Circuit Card.Replaced Defective Card 05000280/LER-1980-054-03, /03L-0:on 800815,during Periodic Testing,Motor Operated Valve SW-102B Failed to Cycle.Valve Required to Close on Loss of Offsite Power Coincident W/Loss of Coolant. Caused by Previous Exposure of Motor Windings to Water ML18139A507
References
LER-80-051-03L-01, LER-80-51-3L-1, NUDOCS 8009220258
Download: ML18139A509 (2)

LER-1980-051, /03L-0:on 800813,discharge Tunnel Radiation Monitor Found Out of Svc During Release of Liquid Waste Test Tank A.Caused by Defective Circuit Card.Replaced Defective Card

Event date:
Report date:
2801980051R03 - NRC Website

text

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JRC FORM 366 h:77(

e LICENSEE EVENT REPORT S. NUCLEAR REGULATORY COMMISSION CONTROL BLOCK: ~I -"---~-"---~-..___..... I 8 1

6 (PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION)

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~~~~~~ L:J©I o I s I o I o Io I 2 Is Io 101 o 60 61 DOCKET NUMBER 68 69 1 s 1 11 31 s I o 101 o J 9 111 2 I s Io 10 74 75 REPORT DATE 80 EVENT DATE EVENT DESCRIPTION AND PROBABLE CONSEQUENCES@

!With the unit at steady state operation, the discharge tunnel radiation monitor was

~

Jfound but of service during a release of 'A' Liquid Waste Test Tank (LWTT).

This is

~

1contrary to T.S. 3.11.A.5 and reportable per T.S. 6.6.2.b.(2).

'A' LWTT had been samplej

~

!prior to being released and all isotopes were within specifications.

Also, the liquid

~

1waste monitor was operational during the release; therefore, the health and safety of

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!the general public were not affected.

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LEA/RO LVENT YEAR

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l The monitor had failed due to a defective circuit card.

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9 FACILITY STATUS

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.LOCATION OF RELEASE @

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J. L. Wilson (804) 357-3184 NAME OF PREPARER------------------

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ATTACBMENT I SURRY POWER DOCKET NO:

REPORT NO:

EVENT DATE:

e STATION, UNIT 1 50-280 80-051/03L-0 08-13-80 TITLE OF REPORT:

RADIATION MONITOR FAILURE

1.

DESCRIPTION OF EVENT

e With the unit at steady state power the discharge tunnel radiation monitor was found out of service during release of 'A' Liquid Waste Test Tank (LWTT).

This is contrary to T.S. 3.11.A.5 and reportable per T.S. 6~6.2.b.(2).

2.

PROBABLE CONSEQUENCES:

'A' UifTT had been sampled prior to being released and all isotopes were within specifications.

Also, the liquid waste monitor was operational during the release; therefore, the health and safety of the general public were not affected *.

3.

CAUSE

The monitor failed because of a defective circuit card in the monitor circuitry.

4.

I}1MEDIATE CORRECTIVE ACTION:

5.

The immediate corrective action was to stop the release.

SUBSEQUENT CORRECTIVE ACTION:

The subsequent corrective action was to replace the defective circuit card and place the monitor back in service.

6.

FUTURE CORRECTIVE ACTION:

Future corrective action is not necessary.

7.

GENERIC IMPLICATION:

None.