1er avril 2015
Un feu d’herbes, situé à 17 miles de la centrale, qui a été rapidement éteint, a affecté l’alimentation électrique du site. A 12h10, un groupe électrogène d’urgence a pris le relais de cette alimentation, mais est lui-même tombé en panne. Cinq minutes plus tard, c’est le téléphone de situation d’urgence qui est tombé en panne à son tour. D’autres moyens de communication ont été mis en place. Le courant a été rétabli à 17h20.
Type : PWR - Puissance : 1 500 MWTh - Première divergence : 08/1973
Available in english only.
Event Number : 50945
Facility : FORT CALHOUN - State : NE
Unit : [1] - RX Type : (1) CE
Event Date : 04/01/2015 - Event Time : 14:40
Emergency Class : NON EMERGENCY 10 CFR Section : 50.72(b)(3)(xiii) - LOSS COMM/ASMT/RESPONSE
Initial PWR : 100 % Current PWR : 100 %
Event Text
LOSS OF EMERGENCY OPERATING FACILITY ELECTRICAL POWER AND PHONE SYSTEM
"At 1210 CDT the transformer supplying power to the Emergency Operating Facility (EOF) stopped working due to the failure of a capacitor bank. The EOF is located adjacent to OPPD’s [Omaha Public Power District] North Omaha facility, approximately 17 miles south of Fort Calhoun Station. The event caused a small grass fire which was quickly extinguished. The local fire department was called. The backup emergency diesel generator for the EOF started and supplied power to the facility, as designed. With the EOF diesel operating, the facility is able to function as required during emergency conditions.
"At 1440 CDT the EOF emergency diesel generator stopped running. At 1545 CDT the Conference Operations (COP) network phone system failed. The COP network is the primary emergency notification system between OPPD, state and county agencies. It is used to provide initial and updated notifications and for general information flow between these agencies. Alternate means of communication have been established (commercial lines) and a dedicated communicator is stationed in the control room to ensure that we can facilitate communication should the need arise.
"Power to the EOF was restored at 1713 CDT. At time 1720 CDT the COP tested as normal."
The licensee notified the NRC Resident Inspector.
https://www.nrc.gov/reading-rm/doc-collections/event-status/event/2015/20150402en.html
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