25 juillet 2014
Une fuite a été découverte sur une soupape qui a été isolée : cet isolement à conduit à rendre inutilisable un réservoir d’injection de sûreté. Les prescriptions techniques prévoient l’arrêt du réacteur dans les 24 heures.
Type : PWR - Puissance : 2 700 MWh - Première divergence : 06/1983
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Event Number : 50310
Facility : SAINT LUCIE - 2 State : FL - Unit : [2] - RX Type : [2] CE
HQ OPS Officer : DANIEL MILLS Notification Date : 07/25/2014
Event Date : 07/25/2014 - Event Time : 11:29
Emergency Class : NON EMERGENCY 10 CFR Section : 50.72(b)(3)(ii)(A) - DEGRADED CONDITION 50.72(b)(2)(i) - PLANT S/D REQD BY TS
Initial PWR : 100 % Current PWR : 0 %
Event Text
TECHNICAL SPECIFICATION REQUIRED SHUTDOWN DUE TO A SAFETY INJECTION VALVE DEFECT
"On July 25th, 2014 at 1129 EDT, during investigation of a small leak inside Saint Lucie Unit 2 containment, a defect was identified on a valve (V3811, Safety Injection Tank 281 Outlet Vent Valve). This valve is within the Q-Group A (ASME Class 1 equivalent) boundary of the safety injection line. The leak is currently isolated from the reactor coolant system by a Technical Specification credited isolation check valve. The affected Safety Injection Tank has been declared inoperable and the unit has entered 24 hour shutdown [Technical Specification] action statement 3.5.1.b. Unit shutdown is currently being planned for repair of the flaw.
"This condition is being reported pursuant to 10 CFR 50.72(b)(3)(ii)(A)."
The licensee has notified the NRC Resident Inspector.
* * * UPDATE FROM JOHN REXRODE TO VINCE KLCO AT 0053 EDT ON 7/26/14 * * *
"On July 26, 2014 at 0002 EDT, Saint Lucie Unit 2 commenced shutdown to repair the identified leak.
"This condition is being reported pursuant to 10 CFR 50.72(b)(3)(ii)(A) and 10 CFR 50.72(b)(2)(i).
"The NRC Resident Inspector has been notified."
Unit 2 current power is 88% at 0105 EDT and expect to trip the unit at approximately 0400 EDT.
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