ENS 47265
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ENS Event | |
|---|---|
18:45 Sep 13, 2011 | |
| Title | 24-Hour Report Involving Potential Failure to Maintain Double Contingency Criteria |
| Event Description | As part of the ongoing GNF-A Fuel Manufacturing Operation (FMO) Integrated Safety Analysis (ISA) project, reviews of documentation for scrap accumulation hoods were performed that identified procedural actions that were different than described in the criticality safety analysis. It was determined at approximately 2:45 PM on September 13, 2011 that uranium mixed with small amounts of moderator were not prevented from movement into these hoods. This resulted in a condition where the moderation criticality control documented as being necessary to meet double contingency may not have been maintained. The other criticality control on geometry was maintained at all times.
At no time was an unsafe condition present, however the accumulation hoods were shut down until necessary controls were available. Additional corrective actions and extent of condition are being evaluated. This event is being conservatively reported pursuant to GNF-A internal procedure reporting requirements within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> of discovery. The licensee will inform state and local agencies and the NRC Region II Office of this incident. |
| Where | |
|---|---|
| Global Nuclear Fuel - Americas Wilmington, North Carolina (NRC Region 2) | |
| License number: | SNM-1097 |
| Reporting | |
| Other Unspec Reqmnt | |
| Time - Person (Reporting Time:+18.78 h0.783 days <br />0.112 weeks <br />0.0257 months <br />) | |
| Opened: | Scott P. Murray 13:32 Sep 14, 2011 |
| NRC Officer: | Steve Sandin |
| Last Updated: | Sep 14, 2011 |
| 47265 - NRC Website
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Global Nuclear Fuel with Other Unspec Reqmnt | |
WEEKMONTHYEARENS 478292012-04-12T12:00:00012 April 2012 12:00:00
[Table view]Other Unspec Reqmnt Internal Reporting Requirement for Criticality Safety Controls ENS 473802011-10-26T19:00:00026 October 2011 19:00:00 Other Unspec Reqmnt Loss of Double Contingency ENS 472692011-09-14T19:30:00014 September 2011 19:30:00 Other Unspec Reqmnt, 10 CFR 70.74 APP. A 24 Hour Report Due to Double Contingency Not Maintained ENS 472652011-09-13T18:45:00013 September 2011 18:45:00 Other Unspec Reqmnt 24-Hour Report Involving Potential Failure to Maintain Double Contingency Criteria ENS 471612011-08-16T16:00:00016 August 2011 16:00:00 Other Unspec Reqmnt Improper Criticality Safety Evaluation ENS 466632011-03-08T05:00:0008 March 2011 05:00:00 Other Unspec Reqmnt Gnf Procedure 40-32 Loss of a Single Material Control Transaction ENS 466502011-03-01T20:00:0001 March 2011 20:00:00 Other Unspec Reqmnt Failure to Maintain Mass Control of Uo2 Powder ENS 459762010-06-04T13:30:0004 June 2010 13:30:00 Other Unspec Reqmnt Active Criticality Controls Not in Irofs 2012-04-12T12:00:00 | |
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