10 janvier 2014
Explosion d’un transformateur dans la zone protégée. La destruction de ce transformateur n’aurait pas affecté la sécurité. Le cœur étant critique, les systèmes de protection du réacteur se seraient correctement enclenchés.
Les deux réacteurs ont continué à fonctionner à puissance nominale.
Type : BWR Mark 1 - Première divergence : n° 1 : 10 / 1976 - n° 2 : 03 / 1975 - Puissance : n° 1 & 2 : 2 923 MWTh
Available in english only.
Event Number : 49713 Facility : BRUNSWICK - State : NC - Unit : [1] [2] - RX Type : [1] GE-4,[2] GE-4 -
Event Date : 01/10/2014 - Event Time : 19:48
Emergency Class : UNUSUAL EVENT 10 CFR Section : 50.72(a) (1) (i) - EMERGENCY DECLARED
Initial PWR 100 % - Current PWR 100 %
Event Text
UNUSUAL EVENT DECLARED DUE TO EXPLOSION WITHIN PROTECTED AREA BOUNDARY
The licensee declared a Notice of an Unusual Event per EAL HU2.2 "Explosion with Protected Area Boundary" following an apparent fault and explosion on the M29 transformer (a non-safety related transformer). This resulted in a loss of one electrical bus at the ocean discharge station ; however, no safety-related electrical loads were effected and both units remained at 100 percent electrical power. Station personnel reported that there was no smoke in the area of the M29 transformer and the event may have been a flashover explosion in the area of the transformer. All safety systems remain available. Licensee is investigating the cause of the explosion, and no offsite assistance was required.
The licensee has notified the NRC Resident Inspector, the State of North Carolina, and other local authorities.
Notified DHS SWO, FEMA Operations Center, NICC Watch Officer, and NuclearSSA via e-mail.
* * * UPDATE ON 01/10/14 AT 2343 EST FROM MIKE MORRIS TO RYAN ALEXANDER * * *
"Notification of an Unusual Event is being terminated [at 2320 EST] because the condition no longer exists. The source of the apparent explosion was a failed insulator on a breaker and is known to present no danger to public health and safety. Both Units are stable and a recovery organization is in place."
https://www.nrc.gov/reading-rm/doc-collections/event-status/event/2014/20140113en.html#en49713
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