15 janvier 2015
Une porte de ligne de transfert haute énergie (Hight Energy Line Break : HELB) a été découverte non verrouillée affectant deux voies. Suite à la survenue d’un accident, ce problème aurait pu mettre en cause des fonctions de sécurité. La porte a été réparée.
Type : PWR - Puissance : 3 650 MWth - Première divergence : 01/1986
Available in english only.
vent Number : 50737
Facility : MILLSTONE - State : CT
Unit : [3] - RX Type : CE,[3] W-4-LP
Event Date : 01/15/2015 - Event Time : 08:08
Emergency Class : NON EMERGENCY 10 CFR Section : 50.72(b)(3)(v)(D) - ACCIDENT MITIGATION
Initial PWR : 100 %
Current PWR : 100 %
Event Text
A&B SWITCHGEAR ROOM BOUNDARY DOOR LATCH DISCOVERED NOT FUNCTIONING PROPERLY
"On January 15, 2015 a high energy line break door affecting both trains of safety related switchgear rooms was discovered not latching after passage. The boundary was not operable for approximately 19 minutes. The door has been repaired.
"Dominion is reporting that this condition could have prevented the fulfillment of the safety function to mitigate the consequences of an accident pursuant to 10 CFR 50.72(b)(3)(v)(D).
"The NRC Senior Resident Inspector has been notified."
The State of Connecticut Department of Energy, and Environmental Protection and Waterford Dispatch were also notified.
https://www.nrc.gov/reading-rm/doc-collections/event-status/event/2015/20150116en.html
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