23 mai 2014
La fuite, dont le volume n’est pas indiqué, a été déclarée car elle dépassait 4,5 kg d’hydrogène. Cet hydrogène sert au refroidissement de l’alternateur. L’évènement n’aurait eu aucune conséquence ni sur l’homme ni sur l’environnement
Type : Fukushima I (BWR- MARK I ) - Puissance : 2028 MWTh - Première divergence : 06/1972
Available in english only.
Event Number : 50134
Facility : PILGRIM - State : MA - Unit : [1] - RX Type : [1] GE-3
Event Date : 05/23/2014 - Event Time : 12:10
Emergency Class : NON EMERGENCY 10 CFR Section : 50.72(b)(2)(xi) - OFFSITE NOTIFICATION
Initial PWR : 100 % Current PWR : 100 %
Event Text
OFFSITE NOTIFICATION - RELEASE OF HYDROGEN GAS IN EXCESS OF REPORTABLE QUANTITY
"At 1210 EDT on Friday, May 23, 2014, the Massachusetts Department of Environmental Protection and the Plymouth Massachusetts Fire Department were notified of a hydrogen release in accordance with plant procedures and 310CMR40.300, Massachusetts Contingency Plan Notification for Oil and Hazardous Material ; Identification and Listing of Oil and Hazardous Material. This was due to a release of hydrogen gas to the environment exceeding the reportable quantity of ten pounds. The release was from the generator hydrogen cooling system. There was no plant damage. Hydrogen system pressure has been restored to the normal operating band and is stable. The cause of the event is under investigation.
"This event posed no danger to the health and safety of plant personnel or members of the general public.
"The NRC Resident Inspector has been notified."
https://www.nrc.gov/reading-rm/doc-collections/event-status/event/2014/20140527en.html#en50134