05000237/LER-1981-029-03, /03L-0:on 810523,generator a Recirculation Pump Motor Was Found Tripped.Probably Caused by Foreign Matter in Stator Windings Which Damaged Insulation.Motor Rebuilt

/03L-0:on 810523,generator a Recirculation Pump Motor Was Found Tripped.Probably Caused by Foreign Matter in Stator Windings Which Damaged Insulation.Motor Rebuilt

ML20004G061
Person / Time
Site:	Dresden
Issue date:	06/19/1981
From:	Rowley E COMMONWEALTH EDISON CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML20004G060	List: 05000237/LER-1981-029, Forwards LER 81-029/03L-0 05000237/LER-1981-029-03, /03L-0:on 810523,generator a Recirculation Pump Motor Was Found Tripped.Probably Caused by Foreign Matter in Stator Windings Which Damaged Insulation.Motor Rebuilt
References
LER-81-029-03L, LER-81-29-3L, NUDOCS 8106290072
Download: ML20004G061 (1)

LER-1981-029, /03L-0:on 810523,generator a Recirculation Pump Motor Was Found Tripped.Probably Caused by Foreign Matter in Stator Windings Which Damaged Insulation.Motor Rebuilt

Event date:
Report date:
2371981029R03 - NRC Website

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! [TTTI l During normal operation. Recirculation MG. A generator lockout and drive motor trip l

l alarms annunciated, and the "A" recirculation pump motor was found tripped. This was l

r.unia lof minimal safet-significance since reactor power was i:nmediately reduced and all l

4 g gengineered safety systems were operable. The reactor was operated within the specified j oe I limits required by Amendment 61 to the Tech. Specs. during single loop operation. There, j

go;7; ; was no effect on public health or safety. This was the first occurrence of this type at Dresden.

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CAUSE DESCRIPTION AND CORRECTIVE ACTICNS 27 It Iol I An instantaneous overcurrent condition trieved the Gener11 Electric motor, model number ! '

i i fSK861390A1. Suspectedcausewasforeignmaeterfoundinthestatorwindingswhichi i

m l damaged the insulation and cau gd it to short. The type and source of the foreien i

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ii i.i l service. No further corrective action is plat.ned at this dime.

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