05000259/LER-1981-018-03, /03L-0:on 810504,during Refueling,While Performing Automatic Depressurization Sys Timer Calibr,Relay 2E-K35 Was Operating in 126,exceeding Tech Spec Limits.Caused by Normal Aging & Use.Relay Was Recalibr

/03L-0:on 810504,during Refueling,While Performing Automatic Depressurization Sys Timer Calibr,Relay 2E-K35 Was Operating in 126,exceeding Tech Spec Limits.Caused by Normal Aging & Use.Relay Was Recalibr

ML19352A892
Person / Time
Site:	Browns Ferry
Issue date:	05/27/1981
From:	TENNESSEE VALLEY AUTHORITY
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19352A891	List: 05000259/LER-1981-018, Forwards LER 81-018/03L-0 05000259/LER-1981-018-03, /03L-0:on 810504,during Refueling,While Performing Automatic Depressurization Sys Timer Calibr,Relay 2E-K35 Was Operating in 126,exceeding Tech Spec Limits.Caused by Normal Aging & Use.Relay Was Recalibr
References
LER-81-018-03L-02, LER-81-18-3L-2, NUDOCS 8106020299
Download: ML19352A892 (2)

LER-1981-018, /03L-0:on 810504,during Refueling,While Performing Automatic Depressurization Sys Timer Calibr,Relay 2E-K35 Was Operating in 126,exceeding Tech Spec Limits.Caused by Normal Aging & Use.Relay Was Recalibr

Event date:
Report date:
2591981018R03 - NRC Website

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Tennessee Valley Authority Form BF-17 Brm.ns Ferry Nuclear Plant BF 15.2 3/24/81 LER SUPPLEMENTAL INFORMATION BFRO 259 / 81018 Technical Specification Involved Table 3.2.B Reported Under Techrical Specification 6.7.2.b(2)

Date of Occurrence 5/4i al Time of Occurrence 0000 Unit -

1 Identification and Description of Occurrence:

ADS timer relay was found to operate in 126 seconds, exceeding T.S. table 3.2.B requirement of 120 + 5 seconds.

Conditions Prior to Occurrence:

Unit I refueling outage.

Unit 2 at 99%.

Unit 3 at 10d%.

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

None required.

.A,yparent Cau_se of Occurrence:

Relay 2E-K35 was out of calibration due to normal aging and use.

Analysis 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.

Corrective Action

Relay was recalibrated and satisfactorily tested.

Failure Data:

BFR0 50-259/8007, 8013; 260/8044.

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Te:nnesser Valley Authority Form BF-17 Brm.ns Ferry Nuclear Plant BF 15.2 3/24/81 LER SUPPLEMENTAL INFORMATION BFRO 259 / 81018 Technical Specification Involved Table 3.2.B Reported Under Technical Specification 6.7.2.b(2)

Date of Occurrence 5/4/81 Time of Occurrence 0000 Unit 1

Identification and Description of Occurrence:

1 ADS timer relay was found-to operate in 126 seconds, exceeding T.S. table 3.2.B requirement of 120 t 5 seconds.

Conditions Prior to Occurrence:

Unit I refueling outage.

Unit 2 at 99%.

Unit 3 at 100%.

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

None required.

Aj, parent Cause of Occurrence:

l Relay 2E-K35 was out of calibration due to normal aging and use.

Analysis 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

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chain of events.

Corrective Action

l Relay was recalibrated and satisfactorily tested.

1 Failure Data:

BFR0 50.'59/8007, 8013; 260/8044.

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