ML19207B341

LER 79-063/03L-0 on 790723:during Normal Plant Operation, Technician Working on Fire Protection Mod Discovered Line Drain Valve W/Excessive Leakage.Caused by Check Valve in Drain Line w/off-centered Disk

ML19207B341
Person / Time
Site:	Brunswick
Issue date:	08/21/1979
From:	Tollison A CAROLINA POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19207B337	List: ML19207B336 ML19207B341
References
LER-79-063-03L, LER-79-63-3L, NUDOCS 7908240462
Download: ML19207B341 (1)

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EVENT DESCRIPTION AND PRO 8ABLE CONSEQUENCES h O 2 lDuring normal plant operation, an I&C technician working on a fire protection modifi- l 0 3 l cation discovered a line drain valve with excessive leakage. This leakage rate was o 4 sufficient enough to prevent the charging of the service water fire hose stations. I O s Technical Specification 3.7.7.4, 6.9.1.9b l 0 6 l 0 7 l

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35 36 Zl@ 31 0 l0 l0 0l 40 lN 41 l@ lN 42 l@ l43A l@ 44 Al6l0l5l@ 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h i 0 [ A check valve in the drain line had an off centered disk. The check valve was replaced D i i from stock and the system was returned to normal. This is considered an isolated i ITTTl I event and no further action is required.

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