ML20028C836

LER 82-017/03L-0:on 821206,during Maint Outage,Leakage from Valves 68-06 & 68-09 Found Exceeding Tech Specs.Caused by Poor Seal Design.Mods Will Be Completed During Current Outage & Followed by Retest

ML20028C836
Person / Time
Site:	Nine Mile Point
Issue date:	01/05/1983
From:	Burgmeier M NIAGARA MOHAWK POWER CORP.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML20028C833	List: ML20028C832 ML20028C836 ML20028C839
References
LER-82-017-03L, LER-82-17-3L, NUDOCS 8301140199
Download: ML20028C836 (1)

Text

l 3 LICENSEE EVENT REPORT 1

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O i 7 8 N %l 800l 5 l 0l 0 l DOCKET 68 0 l 2NUMSER l 2 l 0 @l68 1 69l 2 l EVENT 0 l6DATEl 8 l 2 @l075 l1 REPORT 74 l0 l 5DATlE 8 l380l@ i EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h -

I o 2 l Durino a maior maintenance outage while performing leakage testing, leakage from l o 3 l valves 68-0'6 and 68-09 were found to exceed Technical Specifications. These two l  ;

n 4 l' valves are tested simultaneously. LERs 79-05, 79-10, 81-09, 81-22, 81-23 and 82-18 l

[BT 1 I reported similar occurrences. I l

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47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS i O l Failure is attributed to poor seal design. A modification from the vendors (Attwood l )

i i land hforril for valve 68-06, Allis Chalmers for valve 68-09) is availabic. Modificationi i 2 l of these valves will be completed during the current outage and followed by a retest. I i 3 l l t 4 l l 7 s 9

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NAME OF PREPARER bl. Burgmeier (315) 349-2616 PHONE:

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