19 septembre 2014
Une porte a été ouverte alors qu’une trappe de sol avait été retirée. La trappe a été immédiatement remise en place pour rétablir le confinement secondaire. Ce problème a été déclaré dans le cadre d’un risque de dispersion de matière radioactive.
Type : Fukushima I (BWR Mark I) - Puissance MWth : 1 930 MWth - Première divergence : 05/1969 (soit 45 ans)
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Event Number : 50476
Facility : OYSTER CREEK - State : NJ
Unit : [1] RX Type : [1] GE-2
Event Date : 09/19/2014 - Event Time : 23:59 10 CFR Section : 50.72(b)(3)(v)(C) - POT UNCNTRL RAD REL
Initial PWR : 0 % Current PWR : 0 %
Event Text
LOSS OF SECONDARY CONTAINMENT INTEGRITY
At approximately 2359 EDT a temporary modification plug was found to be removed from a floor drain in the Outboard MSIV Room (Trunnion Room). The purpose of the temporary modification plug is to ensure that secondary containment remains intact during outages where the trunnion room door is required to be open. The trunnion room door was open when the plug was found to be removed. The plug was immediately reinstalled, restoring the safety function of the secondary containment. "Per [10 CFR] 50.72(b)(3)(v)(C), Oyster Creek is reporting an event that could have prevented the fulfillment of the safety function of a system needed to control the release of radioactive material."
The licensee has notified the NRC Resident Inspector.
https://www.nrc.gov/reading-rm/doc-collections/event-status/event/2014/20140922en.html
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