BOTH EMERGENCY DIESEL GENERATORS SUPPLYING PLANT EMERGENCY BUSES PER PLANT PROCEDURE
"At approximately 0125 [hrs. CDT], the AquaDam providing enhanced flood protection for FCS [Ft. Calhoun Station] Unit 1 failed. At 0221, as a precautionary measure, DG-2 [Diesel Generator] was automatically started per plant procedure to divorce bus 1A4 from off-site power. At 0250, DG-1 was automatically started to divorce bus 1A3. Both Emergency Diesel Generators loaded on buses as designed. 345KV and 161KV off-site power remain available.
"This is reportable pursuant to 10CFR50.72(b)(3)(iv)(A), 'System Actuation of the Emergency Diesel Generators'. All safety related flood protection barriers remain in place.
"Current river level is 1006.5' MSL and stable. FCS remains in a NOUE [Notification of Unusual Event] due to high river level.
Power Reactor
Event Number: 46989
Facility: FORT CALHOUN
Region: 4 State: NE
Unit: [1] [ ] [ ]
RX Type: (1) CE
NRC Notified By: NATHAN SEID
HQ OPS Officer: DONALD NORWOOD
Notification Date: 06/26/2011
Notification Time: 12:22 [ET]
Event Date: 06/26/2011
Event Time: 10:45 [CDT]
Last Update Date: 06/26/2011
Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(2)(xi) - OFFSITE NOTIFICATION
Person (Organization):
RICK DEESE (R4DO)
Unit
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RX CRIT
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