ML20034H658

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Unplanned DG auto-start on Undervoltage Following Unexpected Trip of Shutdown Bus Feeder Breaker During Maint
ML20034H658
Person / Time
Site: Browns Ferry Tennessee Valley Authority icon.png
Issue date: 03/11/1993
From: Zeringue O
TENNESSEE VALLEY AUTHORITY
To:
NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
Shared Package
ML20034H659 List:
References
NUDOCS 9303190193
Download: ML20034H658 (2)


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U.S. Nuclear Regulatory Commission F

ATTH: Document Control Desk Washington, D.C.

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Dear Sir:

TVA - BROWNS FERRY NUCLEAR PLANT (BFN) UNITS 1, 2, AND 3 - DOCKET NOS. 50-259, 260, AND 296 - FACILITY OPERATING LICENSE DPR-33, 52, AND 68 - LICENSEE EVENT-REPORT LER 50-259/93002 The enclosed-report provides details concerning an unplanned diesel generator start. The diesel generator auto-started on undervoltage folicwing an unexpected trip of a shutdown bus feeder breaker during maintenance.

This report is submitted in accordance with 10 CPR 50.73(a)(2)(iv) as a condition that resulted in manual or automatic actuation of an engineered safet',' feature.

i Sincerely,

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O. J. Zeringue Enclosure cc: See page 2 f

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2 U.S. Nuclear Regulatory Commission MAR 111993 cc (Enclosure):

INPO Records Center Suite 1500 1100' Circle 75 Parkway

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Atlanta, Georgia 30339

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t Paul Krippner American Nuclear Insurers Town Center, Suite 300S 29 South Main Street West Hartford, Connecticut 06107 NRC Resident Inspector Browns Ferry Nuclear Plant Route 12, P.O. Box 637 Athens, Alabama 35609-2000 Regional' Administrator U.S. Nuclear Regulatory Commission Region II l

101 Marietta Street, Suite 2900 Atlanta, Georgia 30323 Thierry M. Ross r

U.S. Nuclear Regulatory Commission f

One White Flint, North

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11555 Rockville Pike Rockville, Maryland 20852 r

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