05000259/LER-1980-059, Forwards LER 80-059/03L-0

Forwards LER 80-059/03L-0

ML19337A337
Person / Time
Site:	Browns Ferry
Issue date:	09/04/1980
From:	Calhoun J TENNESSEE VALLEY AUTHORITY
To:	James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19337A338	List: 05000259/LER-1980-059, Forwards LER 80-059/03L-0 05000259/LER-1980-059-03, /03L-0:on 800810,during Normal Operation,Lightning Caused Athens 161 Kv Line to Trip Momentarily.Cooling Tower Transformer Tripped,Causing Loss of 4 Kv Tie Board.Cause of Transformer Trip Unknown.Athens Line re-energized
References
NUDOCS 8009090557
Download: ML19337A337 (1)

LER-1980-059, Forwards LER 80-059/03L-0

Event date:
Report date:
2591980059R00 - NRC Website

text

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TENNESSEE VALLEY AUTHORITY CHATTANOOGA. TENNESSEE 374of 1750 Chestnut Street Tower II September 4,1980 Mr. James P. O'Railly, Director U.S. Nuclear Regulatory Commission Office of Inspection and Enforcement Regn II 101 Marietta Street, Suite 3100 Atlanta, Georgia 30303

Dear Mr. O'Hailly:

TDOIESSEE VALLEY AUTHORITY - BROWNS FERRY NUCLEAR PLAIR UNIT 1 - DOCKET NO 50-259 - FACILITY OPERATING LICENSE DPR REPORTABLE OCCURRENCE REPORT BFRO-50-259/8059 The enclosed report prevides details concerning lightning tripping transformer No. I which caused loss of unit 3 4-kV bus tie board.

This report is submitted in sceordance with Browns Ferry unit i Techaie=1 Specification 6.7.2.b(2).

Very truly yours, TENNESSEE VALLEY AUTHORITY l

l J. R. Calhoun Director of Nuclear Power Enclosure (3) cc (Enclosura):

Director (3)

Office of Management Information and Program Control U.S. Nuclear Regulatory Co:mnission Washington, DC 20555 Director (40)

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Office of Inspection and Enforcement U.S. Nuclear Regulatory Consission Washington, DC 20555 Mr. Bill Lavallee Nuclear Safety Analysis Center Palo Alto, California 94303 OO Mr. R. F. Sullivan, NRC Inspector, Browns Ferry

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8008080 W7

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