ENS Event | |
|---|---|
13:30 Jun 4, 2010 | |
| Title | Active Criticality Controls Not in Irofs |
| Event Description | During a GNF-A [Global Nuclear Fuels - America] review of the Fuel Manufacturing Operation (FMO) Integrated Safety Analysis (ISA), it was determined at 9:30 AM today (6/4/10) that the list of Items Relied On For Safety (IROFS) associated with the Dry Scrap Recycle Furnace operation was incomplete in the ISA Summary. Although criticality controls exist and these controls associated with moderation intrusion and geometry remained in place, functional, and maintained with appropriate management measures, they were not declared or documented in the ISA as IROFS.
The existing criticality safety analyses of the operation bound the situation, were effective, and were not challenged. At no time was an unsafe condition present. The affected equipment has been shut down pending revision of the ISA to document IROFS for this process. While this did not result in an unsafe condition, this event is being reported for administrative reporting pursuant with the reporting requirements of 10CFR70 Appendix A (b)(1) 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 be changing the list of IROFS to include these criticality controls. The licensee will notify Region II (Gibson). |
| Where | |
|---|---|
| Global Nuclear Fuel Wilmington, North Carolina (NRC Region 2) | |
| License number: | SNM-1097 |
| Reporting | |
| Other Unspec Reqmnt | |
| Time - Person (Reporting Time:+0 h0 days <br />0 weeks <br />0 months <br />) | |
| Opened: | Scott Murray 13:30 Jun 4, 2010 |
| NRC Officer: | Mark Abramovitz |
| Last Updated: | Jun 4, 2010 |
| 45976 - 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 | |