05000296/LER-1980-018-03, /03L-0:on 800519,reactor Low Pressure Switch PS-3-74B SW 1,found Out of Tolerance.Caused by Instrument Setpoint Drift.Barton 288 Pressure Switch Inspected,Recalibr & Functionally Tested for Repeatability

/03L-0:on 800519,reactor Low Pressure Switch PS-3-74B SW 1,found Out of Tolerance.Caused by Instrument Setpoint Drift.Barton 288 Pressure Switch Inspected,Recalibr & Functionally Tested for Repeatability

ML18025A934
Person / Time
Site:	Browns Ferry
Issue date:	06/17/1980
From:	TENNESSEE VALLEY AUTHORITY
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML18025A933	List: 05000296/LER-1980-018, Forwards LER 80-018/03L-0 05000296/LER-1980-018-03, /03L-0:on 800519,reactor Low Pressure Switch PS-3-74B SW 1,found Out of Tolerance.Caused by Instrument Setpoint Drift.Barton 288 Pressure Switch Inspected,Recalibr & Functionally Tested for Repeatability
References
LER-80-018-03L-02, LER-80-18-3L-2, NUDOCS 8006240509
Download: ML18025A934 (4)

LER-1980-018, /03L-0:on 800519,reactor Low Pressure Switch PS-3-74B SW 1,found Out of Tolerance.Caused by Instrument Setpoint Drift.Barton 288 Pressure Switch Inspected,Recalibr & Functionally Tested for Repeatability

Event date:
Report date:
2961980018R03 - NRC Website

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S OJQs DOCKET NUMBEfl 68 69 F VENT DATE 14 75 REPORT DA TE 1>0 EVFNT DESCRIPTION AND PROBABLE CONSEQUENCES QIO I During ncrr>al operation while per'fcnarng S.I. 4.2.B-7 reactor lcw pressure switch PS-3-74B SW 1 was found out of tolerance contrary to T.S. Table 3.2.B.

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There was no danger to health or safety of public.

~O4 Previous occurrence:

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The Barton type 288 pressure switch

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These Barton type switches are being replaced on DCR 1398.

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Form jkF-17 BF 15. 2 1/10/79 LER SUPPLEMENTAL INFORMATION BFRO 296 / 8018 Technical Specification Involved Table 3 2.B Reported Under Technical Specification 6

7 2 b(2) b Date of Occurrence 5/19/80 Time of Occurrence 140>

Unit Identification and Descri tion of Occurrence:

Pressure switch PS-3-74B SW II1 was found>>out of tolerance.

Conditions Prior to Occurrence:

Unit 1 8 9,8%

Unit 2 8 100%

Unit 3 8 82%

Action specified in the Technical Specification Surveillance Requirements met due to ino erable e ui ment.

Describe.

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~A~arent Cause of Occurrence:

Setpoint drift Anal sis of Occurrence:

There was no damage to plant equipment.

There was no activity release, no personnel exposure, or injury and 'go'anger to the health or safety of the public.

Corrective Action

The pressure switch was inspected, recalibrated, and functionally tested for repeatability.

The Barton type switches are being replaced on DCR 1398.

1'~ilure Data:

BFRO-50-260/80004

• Retent.ion:

eriod - Lifetime; Responsibility - Administrative Supervisor

~:Revision: