05000296/LER-1980-026-03, /03L-0:on 800714,RCIC Min Flow Bypass Valve, FCV-3-71 Failed to Close on Signal from Manual Control Switch.Caused by Dirty Torque Switch Contacts.Contacts Cleaned & Limitorque Size SMB-000 Returned to Svc

/03L-0:on 800714,RCIC Min Flow Bypass Valve, FCV-3-71 Failed to Close on Signal from Manual Control Switch.Caused by Dirty Torque Switch Contacts.Contacts Cleaned & Limitorque Size SMB-000 Returned to Svc

ML19338C394
Person / Time
Site:	Browns Ferry
Issue date:	08/11/1980
From:	TENNESSEE VALLEY AUTHORITY
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19338C388	List: 05000296/LER-1980-026, Forwards LER 80-026/03L-0 05000296/LER-1980-026-03, /03L-0:on 800714,RCIC Min Flow Bypass Valve, FCV-3-71 Failed to Close on Signal from Manual Control Switch.Caused by Dirty Torque Switch Contacts.Contacts Cleaned & Limitorque Size SMB-000 Returned to Svc
References
LER-80-026-03L-03, LER-80-26-3L-3, NUDOCS 8008150345
Download: ML19338C394 (2)

LER-1980-026, /03L-0:on 800714,RCIC Min Flow Bypass Valve, FCV-3-71 Failed to Close on Signal from Manual Control Switch.Caused by Dirty Torque Switch Contacts.Contacts Cleaned & Limitorque Size SMB-000 Returned to Svc

Event date:
Report date:
2961980026R03 - NRC Website

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Tennessee Wlh y Authority rm.a ny-n Brarer.s Ferry Nuctenr Plant DF :~ 2 1/10 0; LER SUPPLEMENTAL INFORMATION B FRO 196 /_,,gpq26 Technical Specification Involved 1.5.F.2 Reported Under Technical Specification 6.7.2.5 (2)

Date of Occurrence 7/14/80 Time of Occurrence 0930 Unit 3

Identification and Description'of' Occurrence.

RCIC ntnimum flow bypass valve, FCV-3-71-34, failed to go closed on sinal f rom manual centrol switch.

Conditions Prior to Occurrence:

Unit 1 0 82,*,

Unit 2 0 89%

Un it 3 0 49%

Action specified in the Technical Spec facation Survettlar.cc hepairemer. s m o

<Ju : to inogerglak equipment. Describe.

Ccmpleted surveillance tests en HPCI system.

s)ppgrrnt Cause of Occurrer.re:

Valve failed to go c'.osed due to dirty torque switch cantacts.

Analvsis of Occurrence:

There vaa no damage to plant eq u. ;tr.en t. Bere sa4 no activity r 21 case. c o peerse inel exposure or injury and no danger to the health or safety of 'he aublic.

C..rrective Action :

Conucts we re cleaned.

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j Briw-5C-239/79028 i

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