25 juin 2014
Un employé a largué un conteneur d’une solution radioactive, retirée de l’enceinte d’une boite à gants. Deux litres de produits radioactifs, composés de nitrate d’uranyle et contenant 540 g d’uranium 235, se sont répandus sur le sol. La zone a été rendue accessible, après décontamination, 16h12 après sa pollution. Les contrôles radiologiques complémentaires ont montré d’autres contaminations suite à des déversements antérieurs. De nouvelles opérations de décontamination ont été mises en place.
Available in english only.
Event Number : 50233
Facility : NUCLEAR FUEL SERVICES INC. RX Type : URANIUM FUEL FABRICATION Comments : HEU CONVERSION & SCRAP RECOVERY NAVAL REACTOR FUEL CYCLE LEU SCRAP RECOVERY Region : 2 City : ERWIN State : TN County : UNICOI
Event Date : 06/25/2014 - Event Time : 23:48
Emergency Class : NON EMERGENCY 10 CFR Section : 70.50(b)(1) - UNPLANNED CONTAMINATION
Event Text
UNPLANNED CONTAMINATION EVENT
"Event Text : At approximately 2348 hours (ET) on June 25, 2014, an employee dropped a container of radioactive material solution after removal from a glove box enclosure. The 2-liter poly container split, releasing contents to the floor and surrounding equipment. Operations in the area were placed in a safe condition at the time of the event, radiological controls implemented for personnel protection, and decontamination initiated. Extensive surface contamination surveys were performed to facilitate decontamination and the area was released to normal access by 1615 hours (ET) on June 26, 2014. At this time, the additional radiological controls implemented at the time of the event were removed. At 0245 hours (ET) on June 27, 2014, contamination was discovered to be weeping out of some facility and equipment surfaces in the area of the earlier spill. Radiological controls were reestablished, decontamination efforts resumed, and enhanced monitoring implemented. Since the cumulative time for access restrictions exceeded 24 hours, this is being reported to the [NRC] Operations Center under 10 CFR 70.50 (b)(1).
"There were no actual or potential safety consequences to the public or the environment. There were no actual safety consequences to the workers. The potential safety consequences to the workers include exposure to uranyl nitrate solution.
"The licensee has notified the NRC Resident Inspector."
The radioactive material solution was Uranyl Nitrate containing 540 grams of Uranium-235.
https://www.nrc.gov/reading-rm/doc-collections/event-status/event/2014/20140702en.html#en50233
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