05000296/LER-1981-021-03, /03L-0:on 810507,during Routine startup,3B Recirculation Pump Motor Generator Set Field Breaker Indicated Light Out.Caused by Open Motor Generator Set Field Breaker Trip Coil.Breaker Replaced

/03L-0:on 810507,during Routine startup,3B Recirculation Pump Motor Generator Set Field Breaker Indicated Light Out.Caused by Open Motor Generator Set Field Breaker Trip Coil.Breaker Replaced

ML20004D744
Person / Time
Site:	Browns Ferry
Issue date:	06/03/1981
From:	TENNESSEE VALLEY AUTHORITY
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML20004D720	List: 05000296/LER-1981-021, Forwards LER 81-021/03L-0 05000296/LER-1981-021-03, /03L-0:on 810507,during Routine startup,3B Recirculation Pump Motor Generator Set Field Breaker Indicated Light Out.Caused by Open Motor Generator Set Field Breaker Trip Coil.Breaker Replaced
References
LER-81-021-03L-01, LER-81-21-3L-1, NUDOCS 8106090712
Download: ML20004D744 (2)

LER-1981-021, /03L-0:on 810507,during Routine startup,3B Recirculation Pump Motor Generator Set Field Breaker Indicated Light Out.Caused by Open Motor Generator Set Field Breaker Trip Coil.Breaker Replaced

Event date:
Report date:
2961981021R03 - NRC Website

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Tennessee Valley Authority Form BF-17 Browns Ferry Nuclear Plant BF 15.2 3/24/81 LER SUPPLEMENTAL INFORMATION BFRO 296 / 81021 Technical Specification involved 3.6.r.1 Reported Under Technical Specification _ 6.7.2.b(2)

Date of Occurrence 5/7/81 Time of Occurrence 1535 Unit 3

. identification and Description of Occurrence:

Removed 3B reactor recirculation pump from service to repair motor generator field breaker trip circuit.

Conditions Prior to Occurrence:

Unit I refueling outage.

Unit 2 at 37%

Unit 3 at 61%

Action specified in the Technical Specification Surveillance Requirements met due to inoperable equipment. Describe.

None required Apparent Cause of Occurrence:

Ntor generator set field trip coil was open.

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of Occurrence:

There was no danger to the health or safety of the public, no release of activity, no damage to the plant or equipment, and no resulting significant chain of events.

,Cyrective Action:

Replaced Breaker, tested and returned pump to service.

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Failure Data:

None I

• Retention : Period - Lifetime; Responsibility - Document Control Supervisor

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• Revision :