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Event Notification Report for November 14, 2006

U.S. Nuclear Regulatory Commission
Operations Center

EVENT REPORTS FOR
11/13/2006 - 11/14/2006

EVENT NUMBERS
42991

Power Reactor
Event Number: 42991
Facility: SUMMER
Region: 2     State: SC
Unit: [1] [] []
RX Type: [1] W-3-LP
NRC Notified By: ROBERT G. SWEET
HQ OPS Officer: JOHN MacKINNON
Notification Date: 11/14/2006
Notification Time: 20:02 [ET]
Event Date: 11/14/2006
Event Time: 16:42 [EST]
Last Update Date: 11/14/2006
Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(3)(xiii) - LOSS COMM/ASMT/RESPONSE
Person (Organization):
ROBERT HAAG (R2)
Power Reactor Unit Info
Unit SCRAM Code RX Crit Initial PWR Initial RX Mode Current PWR Current RX Mode
1 N N 0 Cold Shutdown 0 Cold Shutdown
Event Text
EMERGENCY SIREN ACTIVATION CAPABILITY INOPERABLE FOR APPROXIMATELY 15 MINUTES

"At 1642 hours on 11/14/06, activation capability was lost to all ENS sirens due to the malfunction of a radio repeater. Plant personnel secured the affected repeater and control was automatically transferred to one of the four remaining functional repeaters. The siren system has been satisfactorily tested. The total siren outage time was approximately 15 minutes. This event has been entered into the station corrective action program for evaluation."

State and Local Officials were notified of this event by the licensee.

The NRC Resident Inspector was notified of this event by the licensee.