ENS 47257
ENS Event | |
|---|---|
13:00 Sep 12, 2011 | |
| Title | Missing/Unaccounted For Am-241 Special Form Sealed Source In A M43A1 Chemical Agent Detector |
| Event Description | A Michigan National Guard Unit in Lansing, MI while preparing for deployment identified that a 250 microcurie Am-241 special form sealed source (S/N Z03-C-36663) was missing from a M43A1 Chemical Agent Detector. The detector was last confirmed intact in 2008 prior to the Unit's last deployment to Iraq.
The licensee has initiated a formal investigation and notified the State of Michigan of the incident.
Description of the event: On September 12, 2011 the Michigan Army National Guard, United States Property and Fiscal Office (USPFO) warehouse, Lansing, MI reported to the licensee of a missing Am-241 cell from a M43A1 chemical agent detector. The Am-241 cell is a sealed source, special form that contains 250 microcuries of Am-241. The Am-241 cell (s/n C-36663) belonged to detector s/n D-36025. Detector is NSN 6665-01-081-8140 and SSDR no. NR-1129-D-102-S (inactive). The detector with Am-241 cell belongs to 'A' Co. 125th Infantry. A physical inventory was performed by 'A' Co. in January 2008 at which time the unit was deployed to Kuwait for 1 year. The unit was getting ready for redeployment to Kuwait in the next several weeks and performed an inspection of all equipment needing to be shipped. It was at this time that cell C-36663 was discovered missing from the detector. The USPFO warehouse was searched wall to wall and the missing cell was not found. The Michigan National Guard is conducting a formal investigation regarding the lost radioactive cell. Exposure to personnel is not likely to occur in an unrestricted area since the Am-241 source is contained in a cell module that is sealed source special form. Notified R3DO (Lipa) and FSME (McIntosh). Provided to ILTAB (Whitney) via e-mail.
The item identified as lost was located on post therefore this report is retracted. Notified R3DO (Stone) and FSME (McIntosh). Provided to ILTAB (Allston) via e-mail. THIS MATERIAL EVENT CONTAINS A "LESS THAN CAT 3" LEVEL OF RADIOACTIVE MATERIAL Sources that are "Less than IAEA Category 3 sources," are either sources that are very unlikely to cause permanent injury to individuals or contain a very small amount of radioactive material that would not cause any permanent injury. Some of these sources, such as moisture density gauges or thickness gauges that are Category 4, the amount of unshielded radioactive material, if not safely managed or securely protected, could possibly - although it is unlikely - temporarily injure someone who handled it or were otherwise in contact with it, or who were close to it for a period of many weeks. For additional information go to http://www-pub.iaea.org/MTCD/publications/PDF/Pub1227_web.pdf This source is not amongst those sources or devices identified by the IAEA Code of Conduct for the Safety & Security of Radioactive Sources to be of concern from a radiological standpoint. Therefore is it being categorized as a less than Category 3 source. |
| Where | |
|---|---|
| U.S. Army Warren, Michigan (NRC Region 3) | |
| License number: | 12-00722-06 |
| Organization: | U.S. Army |
| Reporting | |
| 10 CFR 20.2201(a)(1)(i) | |
| Time - Person (Reporting Time:+4.32 h0.18 days <br />0.0257 weeks <br />0.00592 months <br />) | |
| Opened: | Thomas Gizicki 17:19 Sep 12, 2011 |
| NRC Officer: | Steve Sandin |
| Last Updated: | Sep 22, 2011 |
| 47257 - NRC Website | |
U.S. Army with 10 CFR 20.2201(a)(1)(i) | |
WEEKMONTHYEARENS 514342015-09-30T04:00:00030 September 2015 04:00:00
[Table view]10 CFR 20.2201(a)(1)(i) Missing Troxler Moisture Density Gauge ENS 513322015-08-19T19:52:00019 August 2015 19:52:00 10 CFR 20.2201(a)(1)(i) Lost/Stolen U.S. Army Radioactive Chemical Alarms for Sale or Sold on Ebay ENS 485232012-10-29T05:00:00029 October 2012 05:00:00 10 CFR 20.2201(a)(1)(i) Missing Improved Chemical Agent Monitor ENS 472572011-09-12T13:00:00012 September 2011 13:00:00 10 CFR 20.2201(a)(1)(i) Missing/Unaccounted for Am-241 Special Form Sealed Source in a M43A1 Chemical Agent Detector ENS 444362008-03-21T05:00:00021 March 2008 05:00:00 10 CFR 20.2201(a)(1)(i) Missing Chemical Agent Alarm Detector ENS 417672005-06-10T05:00:00010 June 2005 05:00:00 10 CFR 20.2201(a)(1)(i) Stolen M-22 Automatic Chemical Detectors 2015-09-30T04:00:00 | |