ENS 43439

v t e ENS Event
20:30 Jun 21, 2007
Title	Item Relied on for Safety Not Reliable Under All Scenarios.
Event Description	During a review of the Integrated Safety Analysis for an additive addition step, it was determined that one of the Items Relied on for Safety (IROFS), as documented in the ISA Summary was not reliable. This report is submitted for administrative reporting pursuant to 10CFR7O.50 Appendix A (a)(5). At no time did an unsafe condition exist. The existing criticality safety analysis of the operation bounded the situation, was effective and was not challenged. The IROFS described for the additive sequence did not prevent incorrect type of additive from being added under all scenarios. All affected equipment is in the process of being shut down pending revision of the ISA IROFS for this additive addition process. Units will remain shutdown pending final investigation and implementation of additional preventive actions. Independent controls on moderation remained intact. The as found condition was previously analyzed and demonstrated to be safe. At no time did an unsafe condition exist. Licensee will notify NRC Region 2, North Carolina Radiation Protection Agency, and the New Hanover County Emergency Management Agency.

ENS 43439 +/-
Where
Global Nuclear Fuel - Americas Wilmington, North Carolina (NRC Region 2)
License number:	SNM-1097
Reporting

10 CFR 70.50(a)
Time - Person (Reporting Time:+-3.02 h-0.126 days <br />-0.018 weeks <br />-0.00414 months <br />)
Opened:	Phillip Ollis 17:29 Jun 21, 2007
NRC Officer:	Jeff Rotton
Last Updated:	Jun 21, 2007
43439 - NRC Website
v • d • e

v t e Emergency Notification System
Global Nuclear Fuel with 10 CFR 70.50(a)
WEEKMONTHYEAR2007-06-21T20:30:00 [Table view]
[ENS list for Global Nuclear Fuel]

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