05000339/LER-1981-024-03, /03L-0:on 810224,quench Spray Pump & Associated Valves Removed from Svc.Caused by Repair of Pump Leaks.Leaks Repaired & Subsys Returned to Svc

/03L-0:on 810224,quench Spray Pump & Associated Valves Removed from Svc.Caused by Repair of Pump Leaks.Leaks Repaired & Subsys Returned to Svc

ML19347D609
Person / Time
Site:	North Anna
Issue date:	03/18/1981
From:	Cartwright W VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.)
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19347D608	List: 05000339/LER-1981-024, Forwards LER 81-024/03L-0 05000339/LER-1981-024-03, /03L-0:on 810224,quench Spray Pump & Associated Valves Removed from Svc.Caused by Repair of Pump Leaks.Leaks Repaired & Subsys Returned to Svc
References
LER-81-024-03L, LER-81-24-3L, NUDOCS 8103260835
Download: ML19347D609 (2)

LER-1981-024, /03L-0:on 810224,quench Spray Pump & Associated Valves Removed from Svc.Caused by Repair of Pump Leaks.Leaks Repaired & Subsys Returned to Svc

Event date:
Report date:
3391981024R03 - NRC Website

text

LICENSEE EVENT REPORT CONTROL BLOCK / / / / / / / (1)

(PLEASE PRINT OR TYPE ALL REQUIRED IhTORMATION)

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/V/A/N/A/S/2/ (2)

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LICENSEE CODE LICENSE NUMBER LICENSE TYPE CAT [L/ (6)

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O 'R DOCKET NUMBER EVENT DATE REPORT DATE EVENT DESCRIPTION AND PROBABLE CONSEQUENCES (10)

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On February 24, 1981, while in Mode 1, the quench spray pump and associated

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valves were removed from service for repair contrary to T.S. 3.6.2.1.

The

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quench spray subsystem was returned to service within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> as required by /

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the action statement. Therefore the health and safety of the public were not /

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affected. This item is reportable pursuant to T.S. 6.9.1.9.b.

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SYSTEM

CAUSE

CAUSE COMP.

VALVE CODE CODE SUBCODE COMPONENT CODE SUBCODE SUBCODE

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/S/B/ (11) /E/ (12) M/ (13) /P/U/M/P/X/X/ (14) /B/ (15)

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SEQUENTIAL OCCURRENCE REPORT REVISION LER/R0 EVENT YEAR REPORT NO.

CODE TYPE NO.

(17) REPORT NUMBER

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ACTION FUTURE EFFECT SHUTDOWN ATTACHMENT NPRD-4 PRIME COMP. COMPONEhT TAKEN ACTION ON PLANT METHOD HOURS SUBMITTED FORM SUB. SUPPLIER MANUFACTURER

/B/ (18) g/ (19) /_Z/ (20) /_Z/ (21) /0/0/0/0/ (22) g/ (23) /N/ (24) /A/ (25) /I/0/7/5/ (26)

CAUSE DESCRIPTION AND CORRECTIVE ACTIONS (27)

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This event was caused by removing the Quench Spray Subsystem from service to

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repair leaks. The leaks were repaired and the subsystem returned to service

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within the required time period.

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FACILITY METHOD OF STATUS

% POWER OTHER STATUS

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g/ (28)

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NA g/ (31)

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OPERATOR OBSERVATION

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ACTIVITY CONTEhT RELEASED OF RELEASE AMOUNT OF ACTIVITY (35)

LOCATION OF RELEASE (36)

-/1/6/

g/ (33)

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PERSONNEL EXPOSURES NUMBER

. TYPE DESCRIPTION (39)

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NA

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PERSLNNEL INJURIES NUMBER DESCRIPTION (41)

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LOSS OF OR DAMAGE TO FACILITY 3)

TYPE DLSCRIPTION

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PUBLICITY ISSUED DESCRIPTION-(45)

NRC USE ONLY

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NAME OF PREPARER W. R. CARWRIGHT PHONE (703) 894-5151 8103260735

T

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Virginia Electric and Power Company North Anna Power Station, Unit #2

Attachment:

Page 1 of 1 Docket No. 50-339 Report No. LER 81-024/03L-0

Description of Event

The Quench Spray Pump (2-QS-P-1A) and four quench spray valves (2-QS-73,72,201A and 2-MOV-QS-200A) were removed from service to repair leaks. This was contrary to T.S. 3.6.2.1.

Probable Consequences of Occurrence The leaks were repaired and the subsystem was returned to service within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> as required by the action statement.

In addition, the redundant quench spray subsystem remained operable throughout this period. Therefore, the health and safety of the general public were not affected.

Cause of Event

This event was caused by removing the quench spray subsystem from service to repair leaks.

Immediate Corrective Action

The leaks were repaired and the system returned to service within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />.

Scheduled Corrective Action No further action required.

Actions Taken to Prevent Recurrence No further action required.

Generic Implications There are no generic implications of this event.