05000369/LER-1982-019

LER 82-019/03L-0:on 820228,during Mode 4,performance of RCS Pressure Isolation Valve Leak Rate Test Determined That 3 Valves Failed Test.Caused by Failure of Valves to Seat Properly.Valves Disassembled & Repaired

ML20054B506
Person / Time
Site:	McGuire
Issue date:	03/30/1982
From:	Nardoci P DUKE POWER CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML20054B496	List: 05000369/LER-1982-019
References
LER-82-019-03L, LER-82-19-3L, NUDOCS 8204160566
Download: ML20054B506 (1)

LER-2082-019,

Event date:
Report date:
3692082019R00 - NRC Website

text

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EVENT DESCRIPTION ANO PROgASLS CONSEQUENCES h o 2 IWhile in mode 4 (unit was being brought down for a planned maintenance outage), I o I nerformance of the Reactor Coolant System pressure Isolation valve leak rate  !

E Itest determined that 3 valves failed the test. These valves were subsequently [

E ldeclared inoperable per T.S.l.4.7.2(f) which is reportable pursuant to T.S.6.9. I E Q.11(b). Since each of the valves which failed had a backup valve which success g o 7 Ifully nassed its leak test. the intecrity of the pressure boundary was maintainep g land health and safety of the public were unaffected. [

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CAust otsCRIPTION ANO CORREC*nVE AC' DONS h IilolIThe three swinc check valves (one 2" Kerotest and two 10" Walworth) failed to g Q lseat proneriv. The valves were disassembled and repaired prior to unit startup.;

m lThe valves passed their leak test. and were declared operable on 3/14/82.

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