ENS Event | |
|---|---|
23:00 Apr 16, 2009 | |
| Title | Unanalyzed Condition Due to Possible Unfavorable Geometry |
| Event Description | During a routine NRC inspection, the inspector questioned the adequacy of a 5-gallon limit on liquids allowed in certain process areas to prevent accidental nuclear criticality if the other controls in place are missing.
While further investigation is underway, this event is being reported per 10CFR70 Appendix (b)(1) on a conservative basis. SAFETY SIGNIFICANCE: The safety significance is low POTENTIAL CRITICALITY PATHWAYS: Liquid from 5-gallon container would have to spill and all enter normally closed equipment, or uranium dioxide powder spilled from the equipment. CONTROLLED PARAMETERS: Controlled parameters are moderation CORRECTIVE ACTIONS: A prohibition of spillable liquids exceeding 3-gallons was established in the affected areas. The licensee will be notifying the NRC Region 2 Senior Inspector. |
| Where | |
|---|---|
| Areva Np Inc Richland Richland, Washington (NRC Region 2) | |
| License number: | SNM-1227 |
| Reporting | |
| Part 70 App A (B)(1) | |
| Time - Person (Reporting Time:+19.73 h0.822 days <br />0.117 weeks <br />0.027 months <br />) | |
| Opened: | Robert Link 18:44 Apr 17, 2009 |
| NRC Officer: | Howie Crouch |
| Last Updated: | Apr 17, 2009 |
| 44997 - NRC Website | |
Areva Np Inc Richland with Part 70 App A (B)(1) | |
WEEKMONTHYEARENS 517572016-02-25T19:45:00025 February 2016 19:45:00
[Table view]Part 70 App A (B)(1) Potential Common Mode Failure of Item Relied on for Safety ENS 483662012-10-02T14:30:0002 October 2012 14:30:00 Part 70 App A (B)(1) Unanalyzed Conditions May Lead to Intermediate Consequence Events ENS 479082012-05-08T14:30:0008 May 2012 14:30:00 Part 70 App A (B)(1) Improperly Analyzed Condition ENS 449972009-04-16T23:00:00016 April 2009 23:00:00 Part 70 App A (B)(1) Unanalyzed Condition Due to Possible Unfavorable Geometry ENS 432342007-03-13T21:30:00013 March 2007 21:30:00 Part 70 App A (B)(1) Potential Hazard Affecting Criticality Controls Discovered ENS 429812006-11-09T23:30:0009 November 2006 23:30:00 Part 70 App A (B)(1) Hydrogen Accumulation Due to Loss of Water Seal ENS 429362006-10-23T17:50:00023 October 2006 17:50:00 Part 70 App A (B)(1), Part 70 App A (B)(3) Workers Exposed to Hydrogen Floride Release 2016-02-25T19:45:00 | |