4 mars 2014
Le problème de turbine est survenu suite à une défaillance sur le circuit électrique de commande hydraulique. Toutes les vannes basse pression se sont fermées intempestivement. Le cœur étant critique, les systèmes de protection du réacteur se sont enclenchés.
Type : BWR Mark 2 - Puissance : 3 515 MWth - Première divergence : 12/1984
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Event Number : 49871 - Facility : Limerick - State : PA - Unit : [1] - Type : [1] GE-4 Event Date : 03/04/2014 - Event Time : 23:34 Emergency Class : NON EMERGENCY 10 CFR Section : 50.72(b)(2)(iv)(B) - RPS ACTUATION - CRITICAL
Initial PWR : 100 % Current PWR : 0 %
Event Text
UNIT 1 MANUALLY SCRAMMED DURING A RAPID SHUTDOWN IN RESPONSE TO A TURBINE EHC FAILURE
"At 2334 EST on 3/4/14 Unit 1 was manually scammed during a Rapid Plant Shutdown. The Rapid Plant Shutdown was initiated due to an Electro Hydraulic [Control] [EHC] System failure resulting in all Low Pressure Turbine lntercept Valves failing closed.
"The shutdown was normal and the plant is stable in Hot Shutdown with normal pressure control via the Main Steam Bypass Valves to the Main Condenser and normal level control using Feedwater."
The licensee informed both State and local agencies and the NRC Resident Inspector. A press release will be issued by the licensee.
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