ENS 43864
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ENS Event | |
|---|---|
09:58 Dec 23, 2007 | |
| Title | Small Uf6 Process Leak |
| Event Description | On 12/23/2007 at 0358 the C-333 unit 3 cell 1 PGLD (process gas leak detection) head (YE-5) at stage 5 actuated. Along with the PGLD actuation a seal alarm and a vibration alarm on stage 7 were received. A nearby operator on the cell floor responded to the alarm and observed a small UF6 release from the stage 7A seal cavity. To stop the release the cell was immediately shut down from the ACR which lowered the cell's pressure to below atmospheric pressure. The exact amount of material released has not been determined. Checks by health physics personnel found the actual amount of UF6 released was not significant and resulted in a relatively small area of contamination on the end of the compressor near the seal that failed and on the floor immediately around the end of the compressor.
The actuated PGLD head is a Q safety system component. At the time of the incident the cell was operating in a mode which required the system to be operational. This is being reported based on SAR 6.9 Table 1, J2 (unplanned actuation of a Q safety system) and 10 CFR 76.120(c)(1)(i) (unplanned contamination event). The NRC Resident Inspector has been notified of this event. PGLD Problem Report Nos. ATRC-07-3433; PGLD Event Report No. PAD-2007-022; NRC Event 43864 |
| Where | |
|---|---|
| Paducah Gaseous Diffusion Plant Paducah, Kentucky (NRC Region 2) | |
| License number: | GDP-1 |
| Reporting | |
| 10 CFR 76.120(c)(1) Other Unspec Reqmnt | |
| Time - Person (Reporting Time:+9.07 h0.378 days <br />0.054 weeks <br />0.0124 months <br />) | |
| Opened: | Billy Wallace 19:02 Dec 23, 2007 |
| NRC Officer: | Mark Abramovitz |
| Last Updated: | Dec 23, 2007 |
| 43864 - NRC Website
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Paducah Gaseous Diffusion Plant with Other Unspec Reqmnt, 10 CFR 76.120(c)(1) | |
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 492332013-08-02T14:32:0002 August 2013 14:32:00 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 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 471112011-07-31T15:30:00031 July 2011 15:30:00 10 CFR 76.120(c)(1) Unplanned Contamination Area 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 454132009-10-04T20:00:0004 October 2009 20:00:00 10 CFR 76.120(c)(1) Unplanned Contamination During Startup 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 2013-08-02T14:32:00 | |
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