05000296/LER-1980-042-03, /03L-0:on 801017,while Performing Special Instruction 4.2.B-5,drywell High Pressure,Switch 2 on PS-64- 58B Operated at 0.07 Psig Above Tech Spec Limits.Caused by Instrument Drift.Switch Recalibr & Retested Satisfactorily

/03L-0:on 801017,while Performing Special Instruction 4.2.B-5,drywell High Pressure,Switch 2 on PS-64- 58B Operated at 0.07 Psig Above Tech Spec Limits.Caused by Instrument Drift.Switch Recalibr & Retested Satisfactorily

ML20002A804
Person / Time
Site:	Browns Ferry
Issue date:	11/14/1980
From:	TENNESSEE VALLEY AUTHORITY
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML20002A800	List: 05000296/LER-1980-042, Forwards LER 80-042/03L-0 05000296/LER-1980-042-03, /03L-0:on 801017,while Performing Special Instruction 4.2.B-5,drywell High Pressure,Switch 2 on PS-64- 58B Operated at 0.07 Psig Above Tech Spec Limits.Caused by Instrument Drift.Switch Recalibr & Retested Satisfactorily
References
LER-80-042-03L-03, LER-80-42-3L-3, NUDOCS 8011210606
Download: ML20002A804 (2)

LER-1980-042, /03L-0:on 801017,while Performing Special Instruction 4.2.B-5,drywell High Pressure,Switch 2 on PS-64- 58B Operated at 0.07 Psig Above Tech Spec Limits.Caused by Instrument Drift.Switch Recalibr & Retested Satisfactorily

Event date:
Report date:
2961980042R03 - NRC Website

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1/10/79 LER SUPPLEMENTAL INFORMATION l

B FRO 296 / 8042 Technical Specification Involved Table 3.2.B Reported Under Technical Specification' 6.7.2.b(2)

'Date of Occurrence 10/17/80 Time of Occurrence 1430 Unit 3 i

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Identification and Description of Occurrence:

While performing SI 4.2.5-3, Dryvell Hign Pressure, switch 2 on PS-64-58B operated.07 poig above T.S. table 3.2.B limit. The limit is 2.00 psig.

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Conditions' Prior to Occurrence:

l Unit 1 at 98% power

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t Unit 2 at refueling Unit 3 at 97% power e

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

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Returned to service within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.

Apparent Cause of Occurrence:

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Instrument Drift.

Analysis of Occurrence:

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

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Corrective Action

l Inspected switch contacts, recalibrated and functionally tested for n

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Fanure Data:

260/7919'

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• Retention :

eriod - Lifetime; Responsibility - Adatinistrative Supervisor

• Revision:

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