16 septembre 2013
Sur le réacteur à l’arrêt, une fuite de 1 700 litres par heure a été détectée sur une des voies alternative d’alimentation en eau du réacteur.
Type : BWR Mark 2 - Première divergence : 05 1984 - Puissance thermique : 3952 MWth
Available in english only.
Event Number : 49351 Facility : SUSQUEHANNA - State : PA - Unit : [2] - RX Type : GE-4 Event Date : 09/16/2013 - Event Time : 14:55 -
Emergency Class : NON EMERGENCY 10 CFR Section : 50.72(b)(3)(ii)(A) - DEGRADED CONDITION Person (Organization) : DON JACKSON (R1DO)
Initial PWR : 0 % - Current PWR : 0 % -
Event Text
DEGRADED CONDITION CAUSED BY RHR RELIEF VALVE LEAKAGE
"At 1455 EDT, [on 91/16/13], [Susquehanna] Engineering determined the leakage from the 2B RHR Pump Suction Relief valve caused the Engineered Safety Feature (ESF) Leakage to exceed the 2.5 gpm which was provided to the NRC during the implementation of the Alternate Source Term (AST) submittal. The calculated leakage rate was 7.5 gpm.
"This event is being reported as a degraded condition pursuant to 10CFR50.72(b)(3)(ii).
"Unit 2 is currently in Mode 4 (cold shutdown) for a maintenance outage."
This leaking RHR pump suction relief valve, previously identified in EN #49344, is being evaluated and repaired.
The licensee has notified the NRC Resident Inspector and the state.
Source : https://www.nrc.gov/reading-rm/doc-collections/event-status/event/2013/20130917en.html