ML20082V341

Telecopy RO 50-259/83068:on 831210,RHR Pump 1C Motor Sparked & Smoked.Motor Shut Down & Restarted,Then Tripped on Overcurrent.Pump Declared Inoperable.Caused by Winding Failure.Motor Will Be Replaced

ML20082V341
Person / Time
Site:	Browns Ferry
Issue date:	12/12/1983
From:	Jones G TENNESSEE VALLEY AUTHORITY
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
References
RO-50-259-83068, NUDOCS 8312200084
Download: ML20082V341 (1)

Text

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TELFCOPY TO NRC Dec. 12, 1983 U. S. Nuclear Regulatory N m n Region II 101 Marietta Street, NW Suite 3100 Atlanta, Georgia 30303 BFRO-50-259/83068 Reported under Tecnnical Specification 6 7 2.a.(2)

Teleconv Date 12/12/83 Time 1400 Telechone : Date 12/10/83 and 12/12/83 Time 2112 and 1310 Person Contacted: John Hickman and Dave Verrelli Date of Occurrence: 12/10/83 Time of occurrence: 2045 Unit 1 Technical Specification Involved: 3 5.B.9 l

Conditions Prior to Occurrenqq.

Unit 1 in a refueling outage Unit 2 was operating normally at 100 percent power Unit 3 was in a refueling outage Identification and DescriDtion of Occurrence During normal operation, RHR pump 1C motor was observed to be sparking and smoking. The motor was shutdown and subsequently restarted. After being restarted the motor tripped on overcurrent. RHR pump 1C was declared j inoperable at 2045 hours0.0237 days <br />0.568 hours <br />0.00338 weeks <br />7.781225e-4 months <br />. RHR Loop II was out-of-service, RHR pump 1A was  !

the only RHR pump operable. This exceeds the limits of the LCO as defined by Technical Specification 3 5.B.9 RHR Loop II was placed in service at 2243 hours0.026 days <br />0.623 hours <br />0.00371 weeks <br />8.534615e-4 months <br />. l l

Accarent cause of Occurrence : l l

Apparent internal winding failure of GE Model No. SK6348XC23A, 2000 HP, 3-phase motor.

Other Related Events :

JFR0 50-296/81034 Corrective Action Taken or Planned :

Motor will be replaced.

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