ENS 41465
ENS Event | |
|---|---|
17:40 Mar 6, 2005 | |
| Title | Small Hydrogen Fluoride Leak |
| Event Description | The following information was obtained from the Paducah Gaseous Diffusion Plant via facsimile (text in quotes);
At 1140, on 03-6-05, the Plant Shift Superintendent was notified that the C-360 Toll and Transfer Facility Zone 1 PGLD (Process Gas Leak Detection) system (Q Safety System) on # 4 Sample Cabinet actuated. The operators evacuated to the proper assembly point. The emergency Squad entered the building and sampled for Hydrogen Fluoride and sample results were positive. The autoclave and sample cabinet UF6 lines were evacuated and purged. Operators gave bioassay sample and the results indicated an uptake of Uranium. Event investigation is ongoing. This event is reportable as a 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> event in accordance with the plant procedure UE2-RA-RE1030, Nuclear Regulatory Event Reporting (no 10 CFR section is referenced). An automatic or manual actuation of a Q safety system that results from an event or condition that has the potential for significant impact on the health or safety of personnel. Event having the potential for significant impact are those events where actual plant conditions existed that the system was designed to protect against. The NRC Senior Resident Inspector has been notified of this event. PGDP Problem Report No. ATRC-05-0892; PGDP Event Report No. PAD-2005-07; Worksheet Responsible Division: Operations Atmospheric leak was on line between the autoclave and the sample cabinet. C-360 Toll and Transfer Facility is a stand alone facility. Operations were secured and two individuals had uptakes (Minimal risk): One had an uptake of 7.3 mg/ liter uranium and the other individual had an uptake level of 5.2 mg/ liter uranium. The limit is 5.0 mg/ liter uranium. There was no smoke (very small leak) and a slight smell of Hydrogen Fluoride caused by the leak.
This report is being retracted based on the following information received from the regulatee via fax: This report is being retracted. Subsequent analysis of the actuation determined that the PGLD head actuation occurred from a minor incidental release of UF6 from a valve packing that is not considered a breach of the pressure boundary. Reporting is required if the safety system actuates in response to a condition that the system is designed against and that could result in significant impact on the safety and health of personnel. The PGLD systems safety function, described in the PGDP accident analysis, is to mitigate pigtail/line failures outside of the autoclave that could cause offsite consequences. This incidental UF6 leak did not have the potential for significant impact on personnel or offsite consequences and is not what the safety system is designed to protect against. Thus, the reporting criteria were not met in this case. [The] resident inspector has been notified of this retraction. Notified R2DO (Ayres) and NMSS (Essig). |
| Where | |
|---|---|
| Paducah Gaseous Diffusion Plant Paducah, Kentucky (NRC Region 2) | |
| License number: | GDP-1 |
| Reporting | |
| Other Unspec Reqmnt | |
| Time - Person (Reporting Time:+15.17 h0.632 days <br />0.0903 weeks <br />0.0208 months <br />) | |
| Opened: | Calvin Pittman 08:50 Mar 7, 2005 |
| NRC Officer: | John Mackinnon |
| Last Updated: | Mar 24, 2005 |
| 41465 - NRC Website | |
Paducah Gaseous Diffusion Plant with Other Unspec Reqmnt | |
WEEKMONTHYEARENS 495442013-11-17T20:17:00017 November 2013 20:17:00
[Table view]Other Unspec Reqmnt, 10 CFR 76.120(a)(4) Alert Due to Storm Damage on Site ENS 486802012-12-23T05:20:00023 December 2012 05:20:00 Other Unspec Reqmnt Minor Incidental Uranium Hexafluoride Release ENS 473072011-09-30T13:10:00030 September 2011 13:10:00 Other Unspec Reqmnt Hydraulic Leak Contained on Site- State Officials Notified ENS 470992011-07-27T09:15:00027 July 2011 09:15:00 Other Unspec Reqmnt, 10 CFR 76.120(a)(4) Alert Declared Due to Onsite Release of Fluorine/Chlorinated Fluorine Gas Mixture ENS 464872010-12-17T15:37:00017 December 2010 15:37:00 Other Unspec Reqmnt Diesel Fuel Oil Spill Contained on Site - Federal and State Officials Notified ENS 447762009-01-15T02:39:00015 January 2009 02:39:00 Other Unspec Reqmnt Ongoing Recirculating Cooling Water Leak at C337A Facility ENS 447442008-12-28T10:45:00028 December 2008 10:45:00 Other Unspec Reqmnt 24 Hour Report - Actuation of Leak Detection System Due to Minor Process Gas Leak ENS 446042008-10-27T07:39:00027 October 2008 07:39:00 Other Unspec Reqmnt Concurrent Notification to Nrc of Pcb Spill ENS 444482008-08-28T16:43:00028 August 2008 16:43:00 10 CFR 76.120(c)(2), Other Unspec Reqmnt Leak in High Pressure Fire Water System ENS 443102008-06-21T04:25:00021 June 2008 04:25:00 Other Unspec Reqmnt, Part 70 App A (C) Notification to Kentucky Ert Due to Exceeding Permit Limits at Outfall 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 ENS 437872007-11-15T15:15:00015 November 2007 15:15:00 Other Unspec Reqmnt Safety System Actuation Due to Incidental Uf6 Release ENS 436622007-09-25T05:05:00025 September 2007 05:05:00 Other Unspec Reqmnt Leaking Sulfuric Acid Tank ENS 433852007-05-24T13:15:00024 May 2007 13:15:00 Other Unspec Reqmnt Offsite Notification Made to Another Government Agency ENS 421442005-11-15T19:30:00015 November 2005 19:30:00 Other Unspec Reqmnt Reportable Incident Due to Deviation from Technical Specification Requirements ENS 414652005-03-06T17:40:0006 March 2005 17:40:00 Other Unspec Reqmnt Small Hydrogen Fluoride Leak 2013-11-17T20:17:00 | |