ENS 45413
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ENS Event | |
|---|---|
20:00 Oct 4, 2009 | |
| Title | Unplanned Contamination During Startup |
| Event Description | On 10/04/2009 at 1500 C-331 unit 2 cell 2 was being charged and placed on stream and had just gone above atmospheric pressure when a Maintenance Mechanic observed smoke coming from the cell instrument cubicle and determined it to be UF6 outleakage from cell process instrumentation. To stop the release the cell was immediately taken back below atmospheric pressure. Investigation revealed that a UF6 release had occurred inside the instrument cubicle. The amount of material released has not yet been determined. Decontamination is underway but has not been completed inside the cabinet. The area outside the cabinet has been decontaminated. No injuries or personnel exposure occurred as a result of this event. This is being reported based on 10 CFR 76.120(c)(1)(i) (unplanned contamination event).
PGDP Problem Report Nos. ATRC-09-2435; PGDP Event Report No. PAD-2009-016. Responsible Division: Operations PGDP Assessment and Tracking Report No. ATR-09-2435; PGDP Event Report No. PAD-2009-16; Worksheet No. Responsible Division: Operations The NRC Senior Resident Inspector has been notified of this event. Decontamination is expected to be completed on 10/6/2009.
After further review, it was determined that the amount of contamination was significantly less than five times the lowest annual limit on intake specified in Appendix B to Section 20.1001-20.2402 of 10CFR20 for the material. The licensee notified the NRC Resident Inspector. Notified the R2DO (Guthrie) and NMSS (Whaley). |
| Where | |
|---|---|
| Paducah Gaseous Diffusion Plant Paducah, Kentucky (NRC Region 2) | |
| License number: | GDP-1 |
| Reporting | |
| 10 CFR 76.120(c)(1) | |
| Time - Person (Reporting Time:+19.92 h0.83 days <br />0.119 weeks <br />0.0273 months <br />) | |
| Opened: | Calvin Pittman 15:55 Oct 5, 2009 |
| NRC Officer: | Mark Abramovitz |
| Last Updated: | Dec 3, 2009 |
| 45413 - NRC Website | |
Paducah Gaseous Diffusion Plant with 10 CFR 76.120(c)(1) | |
WEEKMONTHYEARENS 492332013-08-02T14:32:0002 August 2013 14:32:00
[Table view]10 CFR 76.120(c)(1) Contamination Found in Process Building ENS 491652013-06-28T19:09:00028 June 2013 19:09:00 10 CFR 76.120(c)(1) Unplanned Contamination Event That Restricted Access for Greater than 24 Hours ENS 489902013-04-30T18:20:00030 April 2013 18:20:00 10 CFR 76.120(c)(1) Area Access Restricted for More than 24 Hours Due to Increased Radiological Controls ENS 471112011-07-31T15:30:00031 July 2011 15:30:00 10 CFR 76.120(c)(1) Unplanned Contamination Area ENS 454132009-10-04T20:00:0004 October 2009 20:00:00 10 CFR 76.120(c)(1) Unplanned Contamination During Startup ENS 438642007-12-23T09:58:00023 December 2007 09:58:00 Other Unspec Reqmnt, 10 CFR 76.120(c)(1) Small Uf6 Process Leak ENS 438292007-12-07T02:44:0007 December 2007 02:44:00 Other Unspec Reqmnt, 10 CFR 76.120(c)(1) Unplanned Safety System Actuation and Contamination Event ENS 438282007-12-06T21:50:0006 December 2007 21:50:00 Other Unspec Reqmnt, 10 CFR 76.120(c)(1) Unplanned Safety System Actuation and Contamination Event 2013-08-02T14:32:00 | |
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