14 mars 2015
L’arrêt automatique du réacteur n° 2 qui était à pleine puissance s’est enclenché avec l’isolement des lignes de vapeur. Tous les systèmes d’arrêt se seraient correctement enclenchés. L’évacuation de la chaleur s’effectue via le système d’alimentation auxiliaire en eau et les soupapes de décharge à l’atmosphère.
Type : PWR - Puissance : 3 625,6 MWTh - Première divergence : 03/1989
Available in english only.
Event Number : 50893
Facility : VOGTLE - State : GA
Unit : [2] - RX Type : [2] W-4-LP
Event Date : 03/14/2015 - Event Time : 04:29
Emergency Class : NON EMERGENCY 10 CFR Section : 50.72(b)(2)(iv)(B) - RPS ACTUATION - CRITICAL
50.72(b)(2)(iv)(A) - ECCS INJECTION
50.72(b)(3)(iv)(A) - VALID SPECIF SYS ACTUATION
Initial PWR : 100 % Current PWR : 0 %
Event Text
AUTOMATIC REACTOR TRIP ON SYSTEM INJECTION ACTUATION SIGNAL
"Vogtle Unit 2 was operating in Mode 1 at 100% rated thermal power. At 0429 EDT a Unit 2 automatic Reactor Trip and Safety Injection / Steamline Isolation occurred. All systems operated as expected and all control rods fully inserted. The Safety Injection was terminated at 0447 EDT and the emergency operating procedures were exited at 0522 EDT. Unit 2 is stable in Mode 3 with decay heat removal via the Auxiliary Feedwater system and the atmospheric relief valves. A response team is investigating the cause of the event. Unit 1 was unaffected by the event.
"NRC Senior Resident Inspector was notified and is at plant site for investigation."
https://www.nrc.gov/reading-rm/doc-collections/event-status/event/2015/20150316en.html
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