ENS Event | |
|---|---|
16:30 Feb 16, 2009 | |
| Title | 24-Hour Report Involving an Unplanned Contamination Event |
| Event Description | {{#Wiki_filter:An unplanned contamination event occurred on February 16th, 2009. This is a reportable event in accordance with 10CFR40.60 paragraph (1) based on an unplanned event that results in additional radiological controls being required for more than 24 hours. The 24 hour period ended at 1030 on February 17th, 2009. The additional controls imposed was wearing a half-face respirator in the basement of the Feed Materials Building. The Feed Materials Building converts uranium ore concentrates into uranium hexafluoride. Air samples from the basement were analyzed and the airborne radioactivity average was approximately 8.27 e-11 �Ci/ml. The airborne radioactivity exceeded the MTW action level of 30% of a DAC (5.0 e-11 �Ci/ml). One DAC is 1.7e-10. Uranium Tetrafluoride (green salt) was the material that was airborne in the basement. An elevator that is used to transport green salt to different levels of the Feed Materials Building was leaking around an inspection cover which caused the airborne radioactive material.
The licensee attributes the contamination to a failed gasket. The airborne contamination was discovered during routine air sampling which is performed daily. There is no plan to perform personnel testing for uptake or ingestion at this time. }} |
| Where | |
|---|---|
| Honeywell International, Inc. Metropolis, Illinois (NRC Region 2) | |
| License number: | SUB-526 |
| Reporting | |
| 10 CFR 40.60(b)(1) | |
| Time - Person (Reporting Time:+21.37 h0.89 days <br />0.127 weeks <br />0.0293 months <br />) | |
| Opened: | Bob Stokes 13:52 Feb 17, 2009 |
| NRC Officer: | Steve Sandin |
| Last Updated: | Feb 17, 2009 |
| 44857 - NRC Website | |
Honeywell International, Inc. with 10 CFR 40.60(b)(1) | |
WEEKMONTHYEARENS 451952009-07-11T01:00:00011 July 2009 01:00:00
[Table view]10 CFR 40.60(b)(1) Unplanned Contamination Event Requiring Additional Radiological Controls (Respirators) for More than 24 Hours ENS 451632009-06-24T15:45:00024 June 2009 15:45:00 10 CFR 40.60(b)(1) Access Restriction Due to Unplanned Contamination ENS 450582009-05-11T16:30:00011 May 2009 16:30:00 10 CFR 40.60(b)(1) Multiple Failures to Meet 24 Hour Reporting Criteria ENS 449392009-03-24T18:30:00024 March 2009 18:30:00 10 CFR 40.60(b)(1) Building Contaminated During Maintenance ENS 448712009-02-23T16:30:00023 February 2009 16:30:00 10 CFR 40.60(b)(1) Airborne Contamination Over the Limit in the Feed Materials Building ENS 448572009-02-16T16:30:00016 February 2009 16:30:00 10 CFR 40.60(b)(1) 24-Hour Report Involving an Unplanned Contamination Event ENS 444442008-08-27T15:00:00027 August 2008 15:00:00 10 CFR 40.60(b)(1) Unplanned Contamination Event ENS 419772005-09-09T15:00:0009 September 2005 15:00:00 10 CFR 40.60(b)(1) Unplanned Contamination Event ENS 418792005-07-25T14:18:00025 July 2005 14:18:00 10 CFR 40.60(b)(1) Unplanned Contamination Event Due to Filter Failure 2009-07-11T01:00:00 | |