ML20028B389

LER 82-126/03L-0:on 821019,analysis of Sample Charging Pump 21 Lube Oil Revealed That water-oil Mixture Existed. Caused by Lube Oil Cooler Failure Due to Excessive Corrosion & Erosion.Cooler Replaced

ML20028B389
Person / Time
Site:	Salem
Issue date:	11/03/1982
From:	Frahm R Public Service Enterprise Group
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML20028B368	List: ML20028B367 ML20028B389
References
LER-82-126-03L, LER-82-126-3L, NUDOCS 8211300341
Download: ML20028B389 (1)

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• LICENSEE EVENT REPORT

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EVENT DESCRIPTION AND PROB ABLE CONSEQUENCES h o 2 l On October 19, 1982, during routine operation, analysis of a sample of No. 21 l g l Charging Pump lube bil revealed that a water-oil mixture existed. Investigation l

, , l revealed that service water had mixed with the oil through a leak in the lube oil l g , g cooler. The pump was declared inoperable and Action Statement 3.5.2.a was entered.

l o 6 l k3 . 22 Charging Pump was operable, providing emergency core cooling capabilities. l g 7 l The event constituted operation in a degraded mode in accordance with Technical l g ,  ; Specification 6.9.1.9.b. l

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CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h

, o l The lube oil cooler had failed due to excessive corrosion and erosion which resulted l 3 , g from silt in the service water and the use of dissimilar metals in the system. The l

, g cooler was replaced, the pump was satisfactorily tested, and the action statement was l

,  ; terminated. A new design cooler will be installed when parts become available. l

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