3 octobre 2013
Lors de la phase de démarrage du réacteur un arrêt d’urgence est intervenu suite à l’apparition d’un signal sur le système de protection du réacteur. Le cœur étant critique, les systèmes de protection du réacteur se sont enclenchés.
Première divergence : mai 1969 - Puissance : 1 920 MWth - Type : BWR Mark I (type Fukushima 1)
Available in english only.
Event Number : 49404 Facility : OYSTER CREEK - State : NJ - Unit : [1] - RX Type : [1] GE-2 Event Date : 10/03/2013 - Event Time : 06:43
Emergency Class : NON EMERGENCY 10 CFR Section : 50.72(b)(2)(iv)(B) - RPS ACTUATION - CRITICAL
Initial : Not given Current PWR : 0 %
Event Text : AUTOMATIC REACTOR SCRAM DURING STARTUP
"At 0643 EDT [on 10/03/13], during reactor startup, with the reactor critical and power in the intermediate range, an automatic reactor scram occurred due to an invalid (noise) intermediate range monitor (IRM) scram signal processed on both RPS trip systems. All control rods fully inserted and plant response was as expected. This notification is in accordance with 10CFR50.72(b)(2)(iv)(B). The reactor is currently subcritical."
When the reactor scram occurred, reactor power was below the Point of Adding Heat and had minimal effect on the plant. Normal offsite power is being maintained. Decay heat is being maintained via normal shutdown cooling.
The Licensee has notified the NRC Resident Inspector.
https://www.nrc.gov/reading-rm/doc-collections/event-status/event/2013/20131004en.html
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