11 avril 2015
Lors d’inspections, une "petite" fuite sur le réservoir du circuit d’injection sécurité a été découverte dans le confinement du réacteur n° 2. Ce problème rendant le réservoir indisponible, selon les prescriptions techniques, la mise à l’arrêt du réacteur doit intervenir sous 24 heures. L’arrêt du réacteur a donc été engagé.
Type : PWR - Puissance : 2 700 MWTh - Première divergence : 06/1983
Available in english only.
Event Number : 50977
Facility : SAINT LUCIE - State : FL
Unit : [2] - RX Type : [2] CE
Event Date : 04/11/2015 - Event Time : 21:00
Emergency Class : NON EMERGENCY 10 CFR Section : 50.72(b)(2)(i) - PLANT S/D REQD BY TS
Initial PWR : 100 % Current PWR : 80 %
Event Text
TECHNICAL SPECIFICATION REQUIRED SHUTDOWN DUE TO SAFETY INJECTION TANK OUTLET PIPING LEAK
"During investigation of a small leak on the 2B2 Safety Injection Tank inside Saint Lucie Unit 2 containment, a through wall flaw was identified on Class 2 piping associated with the 2B2 Safety Injection Tank. The 2B2 Safety Injection Tank was declared inoperable on April 11, 2015 at 1204 EDT and Unit 2 entered a 24-hour shutdown action statement for Technical Specification 3.5.1.b. On April 11, 2015 at 2100 EDT, Unit 2 initiated a plant shutdown in compliance with Technical Specifications.
"This condition is being reported pursuant to 10 CFR 50.72(b)(2)(i)"
The electrical grid is stable and no safety-related equipment that would affect a safe shutdown was out of service at the time of the report.
The licensee has notified the NRC Resident Inspector
https://www.nrc.gov/reading-rm/doc-collections/event-status/event/2015/20150413en.html#en50977