ENS 49878

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v t e ENS Event
15:26 Mar 6, 2014
Title	Feed Tube Level Sensor Failed as an Item Relied on for Safety
Event Description	Feed tube level sensor was found to be in a state such that it has failed as an IROFS [Item Relied On For Safety] for a fire accident sequence leading to the loss of a criticality control. Another IROFS is in place and the accident sequence continues to meet performance requirements. Less than a safe mass was always maintained. This event is being reported because only one item relied on for safety, as documented in the Integrated Safety Analysis summary, remains available and reliable to prevent a nuclear criticality accident, and has been in this state for greater than eight hours. Portion of the plant affected: FMO [Fuel Manufacturing Operation] Press. The licensee notified the North Carolina State Radiation Protection Branch, New Hanover County Emergency Management, and NRC Region II. * * UPDATE ON 4/3/14 AT 1457 EDT FROM SCOTT MURRAY TO DONG PARK * * * On 3/6/14, GNF-A [Global Nuclear Fuels - America] conservatively made a 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> event notification (EN 49878) due to a discovery that a feed tube level sensor had failed. After further review, it has been determined that a second control remained available, reliable, and the remaining IROFS was sufficient to meet performance requirements. As a result, the event notification is retracted. Notified R2DO (Vias) and NMSS EO (Lombard).

ENS 49878 +/-
Where
Global Nuclear Fuel - Americas Wilmington, North Carolina (NRC Region 2)
License number:	SNM-1097
Reporting

Part 70 App A (A)(5)
Time - Person (Reporting Time:+-4.07 h-0.17 days <br />-0.0242 weeks <br />-0.00558 months <br />)
Opened:	Phillip Ollis 11:22 Mar 6, 2014
NRC Officer:	Pete Snyder
Last Updated:	Apr 3, 2014
49878 - NRC Website
v • d • e

v t e Emergency Notification System
Global Nuclear Fuel with Part 70 App A (A)(5)
WEEKMONTHYEAR2014-03-06T15:26:00 [Table view]
[ENS list for Global Nuclear Fuel]

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ENS Notification