ENS 52251
ENS Event | |
|---|---|
10:00 Sep 19, 2016 | |
| Title | Uf6 Scrubber Exhaust System Not Operating as Required |
| Event Description | EVENT DESCRIPTION: It was determined at approximately 6 AM today (Eastern) that an Item Relied on for Safety (IROFS) associated with a Fuel Manufacturing Operation (FMO) exhaust system was not operating as required. An FMO scrubber exhaust system blower was determined to be not operating and resulted in a failure to meet performance requirements.
The safety function of the scrubber exhaust system is to limit the release of uranium hexafluoride (UF6) and its byproducts to the environment in the unlikely event of an accidental airborne release in a process area. Other upstream controls remained available and reliable and prevented significant quantities of UF6 and its byproducts from being released into the scrubber exhaust system. There was no release of material and at no time was an unsafe condition present. The Dry Conversion Process has been shutdown. An investigation is continuing which will provide additional corrective actions and extent of condition. While this did not result in an unsafe condition, the event is being reported pursuant with the reporting requirements of 10CFR70 Appendix A (b)(2) within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> of discovery. SAFETY SIGNIFICANCE OF EVENT: At no time was an unsafe condition present SAFETY EQUIPMENT STATUS: The Dry Conversion Process (DCP) was shutdown. STATUS OF CORRECTIVE ACTIONS: Additional corrective actions, extent of condition, and extent of cause are being investigated. There was no offsite release of UF6 as a result of the IROF failure. The licensee will inform the State of North Carolina, New Hanover County and the NRC Resident Inspector. |
| Where | |
|---|---|
| Global Nuclear Fuel - Americas Wilmington, North Carolina (NRC Region 2) | |
| License number: | SNM-1097 |
| Reporting | |
| Part 70 App A (B)(2) | |
| Time - Person (Reporting Time:+4.5 h0.188 days <br />0.0268 weeks <br />0.00616 months <br />) | |
| Opened: | Scott Murray 14:30 Sep 19, 2016 |
| NRC Officer: | Vince Klco |
| Last Updated: | Sep 19, 2016 |
| 52251 - NRC Website
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Global Nuclear Fuel with Part 70 App A (B)(2) | |
WEEKMONTHYEARENS 562562022-12-02T20:30:0002 December 2022 20:30:00
[Table view]Part 70 App A (B)(2) Fuel Cycle Facility - Loss or Degradation of Safety Items ENS 533312018-04-12T23:00:00012 April 2018 23:00:00 Part 70 App A (B)(2) Potentially Degraded Items Relied on for Safety ENS 522512016-09-19T10:00:00019 September 2016 10:00:00 Part 70 App A (B)(2) Uf6 Scrubber Exhaust System Not Operating as Required ENS 516622016-01-19T02:00:00019 January 2016 02:00:00 Part 70 App A (B)(2) Accumulation of Uranium Oxide Powder in the Dry Scrap Recycle Furnace Off-Gas System ENS 499692014-03-28T17:30:00028 March 2014 17:30:00 Part 70 App A (B)(2), Part 70 App A (A)(4) Items Relied on for Safety Not Operable ENS 480382012-06-19T21:00:00019 June 2012 21:00:00 Part 70 App A (B)(2) Degradation of Safety Equipment ENS 480572012-02-13T13:20:00013 February 2012 13:20:00 Part 70 App A (B)(2) Mass Control Limit Exceeded ENS 466692011-03-10T14:15:00010 March 2011 14:15:00 Part 70 App A (B)(2) Malfunctioning Valve Leads to a Loss of Defense in Depth ENS 464862010-12-16T15:44:00016 December 2010 15:44:00 Part 70 App A (B)(2) Both Hf Detectors in Ghs Test Loop Failed to Be Available and Operable ENS 462442010-09-10T14:00:00010 September 2010 14:00:00 Part 70 App A (B)(2) Degradation of Safety Equipment ENS 461682010-01-25T13:50:00025 January 2010 13:50:00 Part 70 App A (B)(2) Degradation of an Item Relied on for Safety ENS 436372007-09-12T15:30:00012 September 2007 15:30:00 Part 70 App A (B)(2) Moderation Control Item Relied on for Safety Degradation 2022-12-02T20:30:00 | |