05000260/LER-1981-035-01, Scram Discharge Instrument Vol Tank Level Switch 2-LS-85-45F Failed to Operate Per IE Bulletin 80-14 During Maint Outage.Caused by Inoperable Level Switch SL-305-EI-X.Switch Replaced

Scram Discharge Instrument Vol Tank Level Switch 2-LS-85-45F Failed to Operate Per IE Bulletin 80-14 During Maint Outage.Caused by Inoperable Level Switch SL-305-EI-X.Switch Replaced

ML20010G977
Person / Time
Site:	Browns Ferry
Issue date:	09/14/1981
From:	Holder G TENNESSEE VALLEY AUTHORITY
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML20010G970	List: 05000260/LER-1981-035, Forwards Updated LER 81-035/01X-1,per IEB-80-14 05000260/LER-1981-035-01, Scram Discharge Instrument Vol Tank Level Switch 2-LS-85-45F Failed to Operate Per IE Bulletin 80-14 During Maint Outage.Caused by Inoperable Level Switch SL-305-EI-X.Switch Replaced
References
IEB-80-14, LER-81-035-01X, LER-81-35-1X, NUDOCS 8109220734
Download: ML20010G977 (2)

LER-1981-035, Scram Discharge Instrument Vol Tank Level Switch 2-LS-85-45F Failed to Operate Per IE Bulletin 80-14 During Maint Outage.Caused by Inoperable Level Switch SL-305-EI-X.Switch Replaced

Event date:
Report date:
2601981035R01 - NRC Website

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8 60 61 DOCMET fwMBER 68 69 LVENT D ATE F4 75 REPORT DATE 80 EVE?sT DESCRIPTION AND PROB ABLE CONSEQUENCES h

@ l During a maintenance outage, while performing level switch testing SI 4.1. A-8, l

[UT 1 l prior to startup, the scram discharge instrument volume tank level switch 2-LS-85-45F l lO141l (SDV 3 gallon alarm switch) failed to operate (NRC IE Bulletin 80-14). The 25 gallon g There was g i rod block and all 50 gallon scram switches were available and operable.

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I i l o l l The Robertshav level switch model SL-305-EI-X was inoperable.

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Tennessee Valley Authority' s.w e g M. W DF 15.2 j,.. } Broivus Ferry Nuclear Plant 6/04/81 f.F.ft SUPPI.F. MENTAL. INFORMATION

- HFilO-50, __260 / 81035,R1 Technical Specific.ition involved NRC IE Bulletin 80 lleported Under Technical Specification NRCB _8,0-1,4

• Date duc NRC:..N/A Date of Occurrence 7/8/81 Time of Occurrence 0245 Unit ~ 2 Ident_ification_and_ pescription of Occurrence-During the performance of SI 4.1.A-8, level switch testing, prior to startup, the scram discharge volume tank level switch 2-LS-85-45F failed to operate.

Conditions Prior to Occurrence:

Unit 1 in refueling outage.

Unit 2 in maintenance outage.

Unit 3 at 98%.

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

Describe.

None

, Apparent Cause of Occurrence:

Inoperable switch.

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, f

Corrective Action

Switch was repaired.

Failure Data:

BFRO-50-260/80058, 80052 Itetention:

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- 1.ifetime; Itesponsibility - Document Control Supervisor

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