05000255/LER-1981-036-01, /01T-0:on 810920,during Penetration Surveillance Test,Total as-found Leakage from All Penetrations & Isolation Valves Exceeded Limits.Cause Undetermined But Failure of Penetration 52 Isolation Valves Suspected

/01T-0:on 810920,during Penetration Surveillance Test,Total as-found Leakage from All Penetrations & Isolation Valves Exceeded Limits.Cause Undetermined But Failure of Penetration 52 Isolation Valves Suspected

ML20011A560
Person / Time
Site:	Palisades
Issue date:	10/02/1981
From:	CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.)
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML20011A556	List: 05000255/LER-1981-036, Forwards LER 81-036/01T-0 05000255/LER-1981-036-01, /01T-0:on 810920,during Penetration Surveillance Test,Total as-found Leakage from All Penetrations & Isolation Valves Exceeded Limits.Cause Undetermined But Failure of Penetration 52 Isolation Valves Suspected
References
LER-81-036-01T, LER-81-36-1T, NUDOCS 8110130563
Download: ML20011A560 (1)

LER-1981-036, /01T-0:on 810920,during Penetration Surveillance Test,Total as-found Leakage from All Penetrations & Isolation Valves Exceeded Limits.Cause Undetermined But Failure of Penetration 52 Isolation Valves Suspected

Event date:
Report date:
2551981036R01 - NRC Website

text

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EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h l During performance of penetration surveillance test (RO-32), total i

o 2 g g "as found" leakage from all penetratione and isolation valves exceeded l La. Major contributions to excessive leakage were penetrations #33 and i

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F5Tia i #52. Maintenance performed on penetration 33 reduced the leakage rate to,

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