ENS 47152

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v t e ENS Event
16:00 Aug 12, 2011
Title	Integrated Safety Analysis (Isa) - Unanalyzed Condition
Event Description	As part of the ongoing GNF-A review of the Fuel Manufacturing Operation (FMO) Integrated Safety Analysis, accident sequences associated with hydrogen piping are being evaluated. As part of this evaluation, facility walk downs of the piping were performed that identified a configuration that had not previously been analyzed. Based on a review of this as found condition, it was determined at approximately 12 p.m. on August 12, 2011 that the system was improperly analyzed in the ISA and resulted in a failure to meet performance requirements. Hydrogen supply to the affected piping system inside the building has been isolated. Additional corrective actions and extent of condition are being evaluated. This event is being reported pursuant to 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 notify NRC Region 2 and appropriate state and local authorities. * * UPDATE FROM PHILLIP OLLIS TO ERIC SIMPSON AT 1228 EDT ON 8/24/11 * * * Unnecessary piping branches have been removed and caps welded in place. The new piping configuration has been analyzed for ISA accident sequences. Based upon this, hydrogen supplies to affected equipment will resume and normal operations will commence. The licensee will notify NRC Region 2. Notified R2DO (Widmann) and NMSS EO (Campbell).

ENS 47152 +/-
Where
Global Nuclear Fuel - Americas Wilmington, North Carolina (NRC Region 2)
License number:	SNM-1097
Reporting

Part 70 App A (B)(5)
Time - Person (Reporting Time:+19 h0.792 days <br />0.113 weeks <br />0.026 months <br />)
Opened:	Scott Murray 11:00 Aug 13, 2011
NRC Officer:	Bill Huffman
Last Updated:	Aug 24, 2011
47152 - NRC Website
v • d • e

v t e Emergency Notification System
Global Nuclear Fuel with Part 70 App A (B)(5)
WEEKMONTHYEAR2011-09-29T15:20:00 [Table view]
[ENS list for Global Nuclear Fuel]

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