23 juillet 2012
Perte des alimentations électriques extérieures durant plus de 15 minutes. Les alimentations de sécurité ont été fournies par les deux génératrices du site. Insertion des barres de contrôle puis arrêt à chaud du réacteur. Le cœur étant critique, les systèmes de protection du réacteur se sont enclenché.
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Facility : OYSTER CREEK - Region : 1 State : NJ - Unit : [1] [ ] [ ]
Notification Date : 07/23/2012
Event Date : 07/23/2012 - Event Time : 03:29 Last Update Date : 07/23/2012
Emergency Class : UNUSUAL EVENT
EMERGENCY DECLARED - CRITICAL
"At 0329 EDT, Oyster Creek experienced a loss of offsite power and a full reactor scram. All safety systems functioned as required. Unusual Event due to loss of offsite AC power to 4160V buses 1C and 1D for greater than 15 minutes. The cause of the loss of offsite power is currently under investigation by JCP&L."
At 0341 EDT, Oyster Creek declared an Unusual Event based on a loss of offsite power for greater than 15 minutes. As a result of the loss of offsite power, the unit automatically scrammed from 100% with all control rods fully inserting and all safety systems functioning as required. Both Emergency Diesel Generators automatically started and are carrying loads on the safety buses. The unit is stable in Hot Shutdown with decay heat removal via the Isolation Condenser.
The licensee notify the State and local agency, as well as, the NRC Resident Inspector. The licensee will be making a press release.
https://www.nrc.gov/reading-rm/doc-collections/event-status/event/2012/20120723en.html
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