ML20052G361

LER 82-025/03L-0:on 820318,vol Control Tank Makeup Frequency Increased & Containment Floor & Equipment Sump 1A Level Increased During RCS Leak Test.Caused by Failure to Verify Isolation Valves Closed Due to Procedural Deficiency

ML20052G361
Person / Time
Site:	McGuire
Issue date:	04/29/1982
From:	Nardoci P DUKE POWER CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML20052G352	List: ML20052G351 ML20052G361
References
LER-82-025-03L, LER-82-25-3L, NUDOCS 8205180292
Download: ML20052G361 (1)

Text

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accaroars o evexTosscnirnoN IWhile in mode 3, during Anoperformance enosAetsocoussouances @ f the (NC)ReactorSystem leak Coolant test, r;nsa loperators noticed that volume control tank make-up frequency had increased and g G Icontainment floor and equipment sump 1A level was increasing. NC leakage calcula7 o s itions indicated greater than I gpm unidentified leakage which violates T.S.3.4. ,

o e 17.2 and is reportable per T.S.6.9.1.13(b). Since the leak was well within the g a r leapability of a charcine pump. and no pressurizer level or pressure decrease werp g fevident, health and safety of the public were unaffected. J "cco*'s" -

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i o INC hotien sample header containment penetration relief valve lifted when its lifp i , l pressure was approached during the NC System leak test. Due to a procedural ,

g l deficiency the nuclear sampling isolation valves had not been verified closed. g m 1The leak was stopped by isolating the valve. The valve's lift pressure will be I i . Ivertfled. and the leak test procedure was chances to insure nuclear sampling isq-e elation valves are closed priorgo increasing pressure. se

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704-373-7432 8205180 Rf&