ML20028F479

LER 83-003/03L-0:on 830108,during Surveillances Dis 1400-5 & DOS 6600-1,diesel Generator Low Water Pressure Alarm Received.Caused by Bad Low Cooling Water Pressure Switch. Switch Replaced W/Class 9012 Type GAW-5

ML20028F479
Person / Time
Site:	Dresden
Issue date:	01/19/1983
From:	Schroeder B COMMONWEALTH EDISON CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML20028F470	List: ML20028F469 ML20028F479
References
LER-83-003-03L, LER-83-3-3L, NUDOCS 8302010381
Download: ML20028F479 (1)

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fb TTI lpressure alarm was received. When the diesel was manually stopped, it did not run j t o t 41 Ifor the normal coastdown of 5 minutes because of the low water pressure alarm. D/G l lo is t was declared inoperable (T.S. 3.9. A.2.) . The event was of minimal safety signifi- l li O Icance since normal power was available and the D/G would have been available during I 10 6 71 l accident conditions. There was no effect on public health or safety. Previous simi-l iofei liar occurrence was reported bv R.O. 82-45/0lT-0 on Docket 50-249. _I Es" yon s$$$$e coupowewTeoce su os su'eEEe lo is t' 7 8 1! 11 r l@ l.sJ@ LEJ@ 11 IN I S lTWi@

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CAUSE DESCRIPTION AND CORRECTIVE ACTIONS 27 gi;o;lThe cause of this event was due to a bad Low Cooling Water Pressure Switch. The ,

l li eij iswitch, class 9012, type ACW5548, was replaced with class 9012 type GAW 5 and Unit

g l2/3 D/G successfully cested. The Unit 2/3 D/G declared operable prior to the seven g ii i3l l day requirement in the Tech. Sp'ec. The monthly surveillance will continue to be per ;

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