ENS 50750
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ENS Event | |
|---|---|
20:00 Jan 21, 2015 | |
| Title | Dry Conversion Process Improperly Analyzed in the Current Integrated Safety Analysis |
| Event Description | During a GNF-A review of the Fuel Manufacturing Operation (FMO) Integrated Safety Analysis (ISA), it was determined at approximately 3:00 PM (EST) yesterday (1/21/15) that a quantitative risk assessment associated with the Dry Conversion Process (DCP) cylinder cold trap operation was improperly analyzed in the current ISA. The item relied on for safety (IROFS) and other controls associated with preventing overfilling the cold trap system remained available and reliable. However, the initiating event frequency for a particular accident sequence was determined to be higher than that documented resulting in a failure to meet performance requirements.
At no time was the postulated condition present; therefore no potential unsafe condition occurred. The affected equipment has been shut down and an investigation is underway to provide additional corrective actions and determine extent of condition. While this did not result in an unsafe condition, this event is being reported pursuant with the reporting requirements of 10 CFR 70 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 notifying the State of North Carolina Radiation Protection Division and the New Hanover City of Environmental Management. The NRC Region II office and NRC Project Manager will be notified. |
| Where | |
|---|---|
| Global Nuclear Fuel - Americas Wilmington, North Carolina (NRC Region 2) | |
| License number: | SNM-1097 |
| Reporting | |
| Part 70 App A (B)(1) | |
| Time - Person (Reporting Time:+18.73 h0.78 days <br />0.111 weeks <br />0.0257 months <br />) | |
| Opened: | Scott Murray 14:44 Jan 22, 2015 |
| NRC Officer: | Jeff Herrera |
| Last Updated: | Jan 22, 2015 |
| 50750 - NRC Website | |
Global Nuclear Fuel with Part 70 App A (B)(1) | |
WEEKMONTHYEARENS 528112017-06-16T21:00:00016 June 2017 21:00:00
[Table view]Part 70 App A (B)(1) Unanalyzed Condition Identified ENS 507502015-01-21T20:00:00021 January 2015 20:00:00 Part 70 App A (B)(1) Dry Conversion Process Improperly Analyzed in the Current Integrated Safety Analysis ENS 502762014-07-12T21:30:00012 July 2014 21:30:00 Part 70 App A (B)(1) Items Relied on for Safety Associated with the Dry Scrap Recycle Operations Not Meeting Requirements ENS 487092013-01-30T20:30:00030 January 2013 20:30:00 Part 70 App A (B)(1) Completion of Integrated Safety Analysis Action Plan Balance of Plant Milestone ENS 486952013-01-22T20:30:00022 January 2013 20:30:00 Part 70 App A (B)(1) Unanalyzed Condition - Based on Ongoing Integrated Analysis Review ENS 485542012-12-03T18:30:0003 December 2012 18:30:00 Part 70 App A (B)(1) Items Relied on for Safety Associated with the Dry Scrap Recycle Furnace Improperly Analyzed ENS 484972012-11-09T16:00:0009 November 2012 16:00:00 Part 70 App A (B)(1) Unanalyzed Condition - System As-Found Condition Not Fully Described in Isa ENS 477052012-02-27T19:30:00027 February 2012 19:30:00 Part 70 App A (B)(1) Unanalyzed Piping Configuration Discovered ENS 473252011-10-05T18:00:0005 October 2011 18:00:00 Part 70 App A (B)(1) Item Relied on for Safety Not as Described in the Integrated Safety Analysis ENS 467102011-03-29T14:00:00029 March 2011 14:00:00 Part 70 App A (B)(1) Completion of Isa Action Plan Conversion Milestone ENS 463052010-10-02T17:30:0002 October 2010 17:30:00 Part 70 App A (B)(1) Unanalyzed Condition When Fuel Pellet Boats Became Stacked ENS 462432010-09-09T18:30:0009 September 2010 18:30:00 Part 70 App A (B)(1) Accident Evaluation Improperly Analyzed in the Integrated Safety Analysis ENS 457172010-02-23T16:00:00023 February 2010 16:00:00 Part 70 App A (B)(1) Unanalyzed Condition - Incomplete List of Safety Controls in Integrated Safety Analysis Summary ENS 454912009-11-11T20:00:00011 November 2009 20:00:00 Part 70 App A (B)(1) Incomplete Documentation of Criticality Safety Controls in Integrated Safety Analysis Summary 2017-06-16T21:00:00 | |
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