05000259/LER-1980-007, Forwards LER 80-007/03L-0

Forwards LER 80-007/03L-0

ML19296C555
Person / Time
Site:	Browns Ferry
Issue date:	02/22/1980
From:	Calhoun J TENNESSEE VALLEY AUTHORITY
To:	James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19296C556	List: 05000259/LER-1980-007, Forwards LER 80-007/03L-0 05000259/LER-1980-007-03, /03L-0:on 800125,while Performing SI 4.2.A-16, Calibr Reactor Bldg Isolation &/Or Logic Timers,B Logic Channel Did Not Isolate.Caused by Intermittent Sticking of Relay R1B Resulting in Time Delay Contacts Being Closed
References
NUDOCS 8002260639
Download: ML19296C555 (1)

LER-1980-007, Forwards LER 80-007/03L-0

Event date:
Report date:
2591980007R00 - NRC Website

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716 Edney Building FEB 2 g 1980 Mr. Jamca P. O'Reilly, Director 9

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U.S. Fucinar Regulatory Con:nission

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,/] s Office of In=pection and Enforcement

&J Region II 101 Mar 1ctta Street, Suite 3100 Atlanta, Coorgia 30303

Dear Mr. O'?.cilly:

TI2fMCSE" VALLEY AUTdORITl - 3ROWNS FERRY NUCLEAR PLANT UNIT 1 - DOCKET NO. 50-259 - FACILIT! OP_~.".dTT!G LICENSE DPR REPORTABLE OCCURRENCE PS ORT 3720-50-259/3007 The encloaod report provides data 11s concerning isolation relay R1B which was found to be sticking part of the time resulting in non-isolation of logic channel 3 during refueling outags uttilo performing Surveillance Instruction 4.2.A-16.

This raport in submitted in accordance with Browns 7ctry unit 1 Technical Specification 6.7.2.b.2.

Very truly yours, TEICIESSEE VALLEY ADr.IORITY J. a. Calhoun Director of Nuclear Power Enclosura (3) cc (Enclosura):

Director (3)

Offica of Manage =ent Information and Program Control U.S. Nuclear 2agulatory Commission Washington, DC 20555 Director (40)

Offica of Inspection and Enforcement U.S. Nuclear Regulatory Co:21ssion Washington, DC 20555 Mr. 3111 Lavalles Nuclear Safety Analysis Center Palo Alto, California 94303 Mr. R. F. Sullivan, NRC Inspector, Erowns Ferry p

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