05000259/LER-1980-060-03, /03L-0:on 800814,during Normal Operation,B Core Spray Pump Area Cooler Fan Thermostat TS-64-73 Setting Was Above Tech Spec Limit.Caused by Setpoint Being Moved. Thermostat Reset.Caution Signs Posted to Prevent Recurrence

/03L-0:on 800814,during Normal Operation,B Core Spray Pump Area Cooler Fan Thermostat TS-64-73 Setting Was Above Tech Spec Limit.Caused by Setpoint Being Moved. Thermostat Reset.Caution Signs Posted to Prevent Recurrence

ML19332B021
Person / Time
Site:	Browns Ferry
Issue date:	09/12/1980
From:	TENNESSEE VALLEY AUTHORITY
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19332B008	List: 05000259/LER-1980-060, Forwards LER 80-060/03L-0 05000259/LER-1980-060-03, /03L-0:on 800814,during Normal Operation,B Core Spray Pump Area Cooler Fan Thermostat TS-64-73 Setting Was Above Tech Spec Limit.Caused by Setpoint Being Moved. Thermostat Reset.Caution Signs Posted to Prevent Recurrence
References
LER-80-060-03L-01, LER-80-60-3L-1, NUDOCS 8009190524
Download: ML19332B021 (1)

LER-1980-060, /03L-0:on 800814,during Normal Operation,B Core Spray Pump Area Cooler Fan Thermostat TS-64-73 Setting Was Above Tech Spec Limit.Caused by Setpoint Being Moved. Thermostat Reset.Caution Signs Posted to Prevent Recurrence

Event date:
Report date:
2591980060R03 - NRC Website

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IAR SUPI'LEMENTAL INFORMAT'ON IlFRO-TM-- 259 / 80 60 Teicanical Specification Involved rnst, u_n _

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Date of f ice irrer..v

'8/14/80- Tirae of Occurrence 1300 Unit 1

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!.14 ntification ani! Description of Occurrence:

During normal operation while performing SI 4.2.B-60, thermostat TS-64-73 for "B" core spray pump area cooler fan was found set above the techrical specification limit.

Conditions Prior to Occurrence:

Unit 10 97% FMe

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' Unit 2 Si 94% }Me Unit 30 98% IMe.

Actoa r.p< cified in the Technical Specificatien Surveillance Requitecient.; n:

dy, tg_ inoperable cigu3nraent. _ _ Describe.

Instrument recalibrated within the 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> limit.

j,nparent cause of Ogurrence:

The control had been moved.

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There was no damage to the plant equipment. There was no activity release, no

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personnel exposure or injury and no danger to the health or safety of' the public.

Corrcetive Acti.>n.

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The thermostat was recalibrated. Caution signs have been placed by the controls.

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