3 février 2015
Le problème est survenu sur l’installation qui comportait deux réacteurs nucléaires et qui a été définitivement arrêtée en 1998. La neige a obstrué à plus de 50 % les systèmes de ventilation des conteneurs de "combustible" usé. La ventilation des 34 conteneurs a été rétablie à un niveau supérieur à 50 %.
Available in english only.
SAFETY EQUIPMENT DISABLED DUE TO SNOW
"On 2/3/2015 at 1901 [CST], equipment important to safety failed to function as designed : 33 NAC MAGNASTOR systems containing Spent Nuclear Fuel, and 1 NAC MAGNASTOR system containing GTCC [Greater than Class C] waste, had air inlet vent partial blockage, totaling 50 percent or greater, due to environmental conditions, i.e., snow. (Please Note, no VCC systems reached full blockage.)
"NO personnel radiation exposure.
"Actions Taken lAW the NAC FSAR, Rev. 5, which included actions to immediately return the systems to less than 50 percent blockage and ongoing maintenance activities to return all systems to full operability. Available in english only "Additional information : 1. On 2/4/2015 at 0445 hrs. All 34 failed systems were restored to less than 50 percent blockage. 2. lAW the NAC FSAR we have 30 days from time of discovery to return each system to full operability. 3. A report will be followed up within 60 days per 10 CFR 72.75.g"
https://www.nrc.gov/reading-rm/doc-collections/event-status/event/2015/20150205en.html#en50787
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