7 mai 2014
Après l’arrêt du réacteur, le système d’injection de sécurité s’est engagé, suite à un niveau d’eau trop bas dans le générateur de vapeur. Le cœur étant critique, les systèmes de protection du réacteur se sont enclenchés
Type : PWR - Puissance : 3 459 MWth - Première divergence : 12 / 1976
Available in english only.
n° 50092 - Facility : SALEM -State : NJ - Unit : [1] RX Type : [1] W-4-LP
Event Date : 05/07/2014 - Event Time : 04:56
Emergency Class : NON EMERGENCY 10 CFR Section : 50.72(b)(2)(iv)(B) - RPS ACTUATION - CRITICAL 50.72(b)(3)(iv)(A) - VALID SPECIF SYS ACTUATION
Initial PWR : 97 % Current PWR : 0 %
Event Text
AUTOMATIC TRIP DUE TO GENERATOR PROTECTION RELAY
"This 4 and 8 hour notification is being made to report that Salem Unit 1 experienced an unplanned automatic reactor trip and subsequent Auxiliary Feedwater System actuation. The automatic trip was initiated from a generator protection relay. A troubleshooting team is being assembled to determine the exact cause for the generator protection actuation. 11, 12 and 13 Aux Feedwater Pumps automatically started as expected on low Steam Generator water level following the reactor trip. All control rods inserted on the reactor trip. All ECCS and ESF systems functioned as expected.
"Salem Unit 1 is currently in Mode 3. Reactor Coolant system pressure is at 2235 PSIG and temperature is 547 F with decay heat removal via the Main Steam Dumps and Auxiliary Feedwater Systems. Condenser vacuum was available for the duration of the event.
"The 12 Chiller was tagged for maintenance prior to this event and had no adverse impact on the post trip plant response or stabilization. No personnel were injured during this event."
The licensee notified the NRC Resident Inspector
https://www.nrc.gov/reading-rm/doc-collections/event-status/event/2014/20140508en.html
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