Water leak at Davis-Besse cause of fire affecting safety-related equipment

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Power Reactor Event Number: 47443
Facility: DAVIS-BESSE
Region: 3 State: OH
Unit: [1] [ ] [ ]
RX Type: [1] B&W-R-LP
NRC Notified By: TOM COBBLEDICK
HQ OPS Officer: JOHN KNOKE
Notification Date: 11/16/2011
Notification Time: 03:04 [ET]
Event Date: 11/16/2011
Event Time: 02:22 [EST]
Last Update Date: 11/16/2011
Emergency Class: ALERT
10 CFR Section:
50.72(a) (1) (i) – EMERGENCY DECLARED
Person (Organization):
DAVID HILLS (R3DO)
JANE MARSHALL (IRD)
CINDY PEDERSON (RA)
BRUCE BOGER (ET)
JENNIFIER UHLE (DRA)
MICHAEL INZER (DHS)
DAVID BARDON (FEMA)
DANIEL GUNN (DOE)
ART WOOD (USDA)
DANIEL CONNALLY (HHS)
Unit SCRAM Code RX CRIT Initial PWR Initial RX Mode Current PWR Current RX Mode
1 N N 0 Startup 0

Event Text

ALERT DUE TO FIRE IN ELECTRICAL BUS AFFECTING SAFETY RELATED EQUIPMENTAt 0222 EST on November 16, 2011, an ALERT was declared due to an electrical fire in the auxiliary building which houses safety related equipment. The apparent cause of the fire was due to an unknown source of water leaking on a breaker, thus causing an arc. The electrical fire is out. The plant was at 0% power and will remain shutdown in Mode 5. There was no impact on core cooling, or emergency power supplies.

The licensee has notified the NRC Resident Inspector and state and local agencies.

* * * UPDATE FROM JANE MALLERNEE TO JOHN KNOKE AT 0449 EST ON 11/16/11 * * *

At 0443 EST on November 16, 2011, Davis Besse, Unit 1 exited their ALERT. The electrical short affected the Control Room Emergency Ventilation Fan #1 Damper.

The licensee has notified the NRC Resident Inspector.

Source: NRC Event Notifications

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