26 juillet 2014
Suite à ce problème, les spécifications techniques prévoient l’arrêt à chaud du réacteur dans les 18 heures. Comme l’origine du problème n’a pas été trouvée, les procédures d’arrêt du réacteur ont été engagées.
Type : PWR - Puissance : 3 650 MWth - Première divergence : 01/1986
Available in english only.
Event Number : 50313
Facility : MILLSTONE - State : CT - Unit : [2] -RX Type : [2] CE
Event Date : 07/26/2014 - Event Time : 14:11 -
Emergency Class : NON EMERGENCY 10 CFR Section : 50.72(b)(2)(i) - PLANT S/D REQD BY TS
Init PWR : 100 % Current PWR : 100 %
Event Text
TECHNICAL SPECIFICATION REQUIRED SHUTDOWN DUE TO TURBINE DRIVEN AFW PUMP FAILURE
"At 1458 [EDT] on 7/26/14, the [Technical Specification] 72 hour action statement for TDAFWP [Turbine Driven Auxiliary Feedwater Pump] inoperable expires (LCO 3.7.1.1 Action C). Per Technical Specification Action Statement, plant is required to be in HOT STANDBY by 2058 on 7/26/14 (6 hours) and in HOT SHUTDOWN by 0858 on 7/27/14 (additional 12 hours). MPS [Millstone Power Station] Unit 2 shutdown (using normal procedures) has commenced at 1411 when troubleshooting and repairs were unable to determine and correct cause of low pump recirculation flow. Additional activities will continue to correct issue."
Unit 3 is not affected by this event. All safety-related systems and equipment required for safe plant shutdown are available.
The licensee notified the NRC Resident Inspector, Waterford Dispatch, and State of Connecticut Department of Energy and Environmental Protection.
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