13 décembre 2013
Durant le démarrage du réacteur, la pression était proche de la valeur limite d’enclenchement de l’arrêt d’urgence : un arrêt d’urgence a alors été commandé manuellement et se serait correctement déroulé. La situation a été classée critique.
Type : BWR Mark 3 - Puissance : 2 894 MWTh - Première divergence : 02/1987
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Event Number : 49632 - Facility : CLINTON - State : IL Unit : [1] - RX Type : [1] GE-6 Event Date : 12/13/2013 - Event Time : 17:57
Emergency Class : NON EMERGENCY - 10 CFR Section : 50.72(b)(2)(iv)(B) - RPS ACTUATION - CRITICAL
Initial PWR : 18 % Current PWR : 0 %
Event Text
MANUAL REACTOR TRIP DURING FEED PUMP SWAP
"During a feed pump shift from the motor driven reactor feed pump to the ’A’ turbine driven reactor feed pump during power ascension, reactor pressure vessel (RPV) water level was approaching the Reactor Protective System (RPS) automatic scram set point when a manual reactor scram was inserted.
"All control rods fully inserted. RPV water level is being maintained by the normal condensate booster / feedwater systems. RPV pressure is being maintained via normal main steam system. There were no actuations of any Emergency Core Cooling System and no Safety Relief Valves actuations. All systems responded as expected."
The licensee notified the NRC Resident Inspector.
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