18 février 2013
Arrêt manuel du réacteur n° 3 suite à la découverte d’une fuite importante sur une pompe primaire. L’injection d’eau de sécurité s’est effectuée normalement et les barres de contrôle se sont correctement insérées. L’origine de la fuite est en cours de recherche.
Première divergence : octobre 1972 - Puissance : 693 MW - Type : PWR -
Available in english only.
Facility : TURKEY POINT - Region : 2 State : FL - Unit : [3]
Event Date : 02/18/2013 - Event Time : 01:31
Emergency Class : NON EMERGENCY
50.72(b)(2)(iv)(B) - RPS ACTUATION - CRITICAL
Unit SCRAM Code RX CRIT Initial PWR Initial RX Mode Current PWR Current RX Mode 3 M/R Y 100 Power Operation 0 Hot Standby
Event Text
MANUAL REACTOR TRIP DUE TO HIGH SEAL LEAKOFF ON REACTOR COOLANT PUMP 3A
"This is an non-emergency event notification to the NRCOC in Accordance with 10 CFR 50.72(b)(2)(iv)(B) for a valid actuation of the Reactor Protection System (RPS) (four hour notification) and 10 CFR 50.72(b)(3)(iv)(A) for a valid Engineered Safeguards (ESF) actuation due to Auxiliary Feedwater (AFW) initiation (eight hour notification).
"On 2/18/2013 at 0055 Unit 3 commenced a unit shutdown due to high # 1 seal leak-off on the 3A Reactor Coolant Pump (RCP). At 0129 3A RCP #1 seal leak-off exceeded operating limits. Unit 3 reactor was manually tripped. Auxiliary feedwater actuated as designed based on steam generator levels as a result of the trip. Unit 3 is currently in Mode 3 and stable.
"No complications were noted as a result of the reactor trip. Steam generator levels are being returned to normal level following the reactor trip. All other plant systems functioned as designed during and after the reactor trip. 3A RCP high #1 seal leak-off is under investigation."
All control rods fully inserted on the trip. Decay heat was removed by AFW to the steam generators out the atmospheric reliefs. There was no primary to secondary leakage. Electrical buses are being supplied via offsite power.
The licensee notified the NRC Resident Inspector.
https://www.nrc.gov/reading-rm/doc-collections/event-status/event/2013/20130219en.html#en48764