05000259/LER-1980-035-03, /03L-0:on 800424,during Steady State Conditions, 1B Recirculation Pump Removed from Svc Due to Low Oil Level Alarm on Motor Upper Bearing.Caused by Shorted Wires.Wires Reinsulated & Motor Returned to Svc

/03L-0:on 800424,during Steady State Conditions, 1B Recirculation Pump Removed from Svc Due to Low Oil Level Alarm on Motor Upper Bearing.Caused by Shorted Wires.Wires Reinsulated & Motor Returned to Svc

ML19323F252
Person / Time
Site:	Browns Ferry
Issue date:	05/22/1980
From:	TENNESSEE VALLEY AUTHORITY
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19323F247	List: 05000259/LER-1980-035, Forwards LER 80-035/03L-0 05000259/LER-1980-035-03, /03L-0:on 800424,during Steady State Conditions, 1B Recirculation Pump Removed from Svc Due to Low Oil Level Alarm on Motor Upper Bearing.Caused by Shorted Wires.Wires Reinsulated & Motor Returned to Svc
References
LER-80-035-03L, LER-80-35-3L, NUDOCS 8005280700
Download: ML19323F252 (2)

LER-1980-035, /03L-0:on 800424,during Steady State Conditions, 1B Recirculation Pump Removed from Svc Due to Low Oil Level Alarm on Motor Upper Bearing.Caused by Shorted Wires.Wires Reinsulated & Motor Returned to Svc

Event date:
Report date:
2591980035R03 - NRC Website

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t c !; i l to a low oil level alarm on the motor upper bearing.

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,'I'ennessee Valley Authority 1* rm IlF-17 Erowns Ferry Nuclear Plant BF 15.2 1/10/79 LER SUPPLEMENTAL INFORMATION BFRO 259 / 8035 Technical Specification Involved 3.6.F.1 Reported Under Technical Specificction 6.7. 2.b (2)

Date of Occurrence 4/24/80 Tirse of Occurrence 1440 Unit 1

Identification and Descrintion of Occurrence:

IB recirculation pimp was' r'smoved trom servTee due to a low oil level alarm on the motor upper bearing.

The unit was placed in a cold shutdown condition 7 hours8.101852e-5 days <br />0.00194 hours <br />1.157407e-5 weeks <br />2.6635e-6 months <br /> later to investigate the cause of the alarm.

Conditions Prior to Occurrence:

Unit 1060%

Unit 2 @ 0 %

Unit 3 @ 9E%

Action specified in the Technical Specification Survei!!ance Requirements met due to inocerable ecuipment.

Describe.

NA App trent Cause of Occurrence:

Low level alarm was caused by shorted wiras from the level switch due to a loss of insulation.

t Anrdysis of Occurrence:

There was no damage to plant equipment. There was no activity release, no personnel exposure or injury and no danger to the health or safety of the public.

Corrective Action

Glass insulation sleeves were added to the wires to isolate the conductors.

Glass insulation will be added to the recirculation pump oil level switches for rema,ining motore during refueling outage.

Failure Data:

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Period - Lifetime; Responsibility - Administrative Supervisor

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