ML19320C066

LER 80-056/03L-0:on 800610,during Normal Shutdown & Surveillance Testing,Emergency Diesel Generator C Tripped on High Circulating Current.Caused by Dirty or Defective Contact on Voltage Regulator Droop Switch

ML19320C066
Person / Time
Site:	FitzPatrick
Issue date:	07/10/1980
From:	W. Verne Childs POWER AUTHORITY OF THE STATE OF NEW YORK (NEW YORK
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19320C059	List: ML19320C058 ML19320C066
References
LER-80-056-03L, LER-80-56-3L, NUDOCS 8007150715
Download: ML19320C066 (1)

Text

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74 75 REPORT QATE 60 EVENT DESCRIPT1CN AND PRC8ABLE CONSEQUENCES h la12l l INTERIM REPORT: During normal shutdown and during surveillance testing, following l

,a,3, l routine preventive maintenance work,sEmergency Diesel Generator C tripped on high I l o t a l I ci rculating current. Subsequent tests could not duplicate the problem. The other l lois] l EDG system was operable meeting TS 3.9.D requirements. The event did not represent l io,,,l a signiflCant hazard to the public health and safety. l l o l 71 1 I I

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4J 17 I a I a I a 14 44 47 CAUSE DESCRIPTION AND CORRECT 1vE ACTIONS i ji ta;[ The cause of the trip is believed to be due to a dirty or defective contact on the l li ;i l l voltage regulator droop swltch. Investigation continues. A foilow-uo report wi11 1

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