05000296/LER-1980-035-03, /03L-0:on 800901, a Reactor Recirculation Pump Tripped.Caused Undetermined.Unit Load Reduced to 700 Mw & Pump Restarted in 6-h

/03L-0:on 800901, a Reactor Recirculation Pump Tripped.Caused Undetermined.Unit Load Reduced to 700 Mw & Pump Restarted in 6-h

ML19347A939
Person / Time
Site:	Browns Ferry
Issue date:	09/26/1980
From:	TENNESSEE VALLEY AUTHORITY
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19347A934	List: 05000296/LER-1980-035, Forwards LER 80-035/03L-0 05000296/LER-1980-035-03, /03L-0:on 800901, a Reactor Recirculation Pump Tripped.Caused Undetermined.Unit Load Reduced to 700 Mw & Pump Restarted in 6-h
References
LER-80-035-03L-02, LER-80-35-3L-2, NUDOCS 8009300553
Download: ML19347A939 (2)

LER-1980-035, /03L-0:on 800901, a Reactor Recirculation Pump Tripped.Caused Undetermined.Unit Load Reduced to 700 Mw & Pump Restarted in 6-h

Event date:
Report date:
2961980035R03 - NRC Website

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atPORT DATE 80 LVENT O'.5CTHPTION AND PROS A9LE CONOEQUENCES h L A rJ g _ normal operation, the "A" reactor recirculation pump tripped.

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"B" pump was operational. Previous event: None.

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I'n i t load was reduced to 700 We.

The pumo was Ii ii1 l restarted in approximately 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />.

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o no Tennessee Valley Authority Form BF-17 Browns Ferry Nuclear Plant BF 15.2 1/10/79 LER SUPPLEMENTAL INFORMATION 13 FRO 296 /

8035 Technical Specification Involved

3. 6. F.1 Reported Under Technical Specification

6. 7. 2.b (2 )

Date of Occurrence 9/1/80 Time of Occurrence 1455 Unit 3

Identification and Description'of Occurrence:

The "A" reactor recirculation pump tripped.

Conditions ~ Prior to Occurrence:

U-1 at 0%

U-2 at 87%

U-3 at 100%

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

24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> operation allowed with one pump.

Apparent Cause of Occurrence:

Unknown.

Malysis of Occurrence:

There was no effect on the public health or safety, no damage to plant equipment and no personnel exposure or injury.

Corrective Action

The unit load was reduced to 700 MWe.

The pump was restarted.

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l'ailure Data:

N/A

• Retention :

eriod - Lifetime; Responsibility - Adminirtrative Supervisor

• Revision:

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