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. |
| Where | |
|---|---|
| Global Nuclear Fuel 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
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Global Nuclear Fuel with 10 CFR 70.50(a) | |
WEEKMONTHYEARENS 434392007-06-21T20:30:00021 June 2007 20:30:00
[Table view]10 CFR 70.50(a) Item Relied on for Safety Not Reliable Under All Scenarios. 2007-06-21T20:30:00 | |