13 mars 2015
Ce mauvais emplacement de combustible dans le cœur a été déterminé lors de la vérification du chargement. Il n’y a pas d’analyse générale qui permette d’établir que les marges d’arrêt en sécurité auraient été remplies. Ce problème a été déclaré au titre de graves atteintes aux conditions de sûreté du réacteur.
Type Fukushima I (BWR Mark 1) - Puissance : 2 957 MWTh - Première divergence : 10/1971
Available in english only.
Event Number : 50882
Facility : QUAD CITIES - State : IL
Unit : [1] - RX Type : [1] GE-3
Event Date : 03/13/2015 - Event Time : 01:00
Emergency Class : NON EMERGENCY 10 CFR Section : 50.72(b)(3)(ii)(B) - UNANALYZED CONDITION
Initial PWR : 0 % - Current PWR : 0 % -
Event Text
FUEL ASSEMBLY MIS-ORIENTED RESULTING IN A UNANALYZED CONDITION
"On March 13, 2015 at 0100 [CDT], it was identified that fuel assembly QAD224 was mis-oriented 180 degrees at core location 51-40. The intended orientation was [southeast]. However the assembly was identified as being [northwest]. This issue was identified during the core verification process. In the current core configuration, there is not a bounding analysis that assures adequate Shutdown Margin.
"This event is reportable under 50.72(b)(3)(ii) as an unanalyzed condition that significantly degraded plant safety.
"The NRC Resident Inspector has been notified."
https://www.nrc.gov/reading-rm/doc-collections/event-status/event/2015/20150316en.html#en50882
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