05000237/LER-1983-003-03, /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

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/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:
References
LER-83-003-03L, LER-83-3-3L, NUDOCS 8302010381
Download: ML20028F479 (1)


LER-1983-003, /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
Event date:
Report date:
2371983003R03 - NRC Website

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svan7 oAra 75 asconToAT so EVENT DESCRIPTION AND PROSA8LE CONSEQUENCES h los2l lDuring surveillances DIS 1400-5 and DOS 6600-1, the diesel generator (D/G) low water

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l 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.

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.i 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

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