ENS 56405
ENS Event | |
|---|---|
06:00 Mar 9, 2023 | |
| Title | Found Source |
| Event Description | The following was received from the state of Wisconsin Department of Health Services (WI DHS) via phone and email:
On 2/16/2023, WI DHS was notified that a citizen was in possession of a package labeled radioactive on their farm and that they had been in possession of the package for almost a year. The label on the package indicated that it contained 8.15 GBq (220 milliCuries) of Mo-99. The label on the box indicated that the intended destination was Medi-Ray. The shipper was unknown. On 03/01/2023, WI DHS took possession of the package and determined that it contained a Lantheus Mo-99/Tc-99m generator. The generator label indicated that it originally contained 277.5 GBq (7.5 Curies) Mo-99, with a calibration date of 04/03/2022. WI DHS confirmed that the package contents are no longer radioactive. WI DHS consulted with the NRC and determined that the event was not reportable based on the information known at the time, the lack of radioactive contents, an unidentified licensee, and an unknown common carrier. On 03/09/2023, WI DHS was contacted by a Lantheus representative who determined, based on the lot number, that the package was most likely originally distributed to the Medical College of Wisconsin (WI RAM license number: 079-1104-01). On 03/09/2023, WI DHS contacted the licensee to confirm if they had shipped the recovered package. On 03/09/2023, the licensee confirmed that they had possessed a generator from the identified lot number and that their records indicated a return shipment containing that generator should have been picked up for transfer to Medi-Ray by the common carrier on 04/17/2022. On 03/09/2023, Medical College of Wisconsin made an official telephone notification of a reportable event of the loss of 220 milliCuries of Mo-99. This investigation remains open and WI DHS is working with Medi-Ray to dispose of the generator. Wisconsin Report ID: W1230003 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 |
| Where | |
|---|---|
| Medical College Of Wisconsin Milwaukee, Wisconsin (NRC Region 3) | |
| License number: | 079-1104-01 |
| Organization: | Wisconsin Radiation Protection |
| Reporting | |
| Agreement State | |
| Time - Person (Reporting Time:+32.92 h1.372 days <br />0.196 weeks <br />0.0451 months <br />) | |
| Opened: | Joseph F Ross 14:55 Mar 10, 2023 |
| NRC Officer: | John Russell |
| Last Updated: | Mar 10, 2023 |
| 56405 - NRC Website | |
Medical College Of Wisconsin with Agreement State | |
WEEKMONTHYEARENS 564052023-03-09T06:00:0009 March 2023 06:00:00
[Table view]Agreement State Found Source ENS 459992010-06-10T05:00:00010 June 2010 05:00:00 Agreement State Agreement State Report - Brachytherapy Dose Received Was Greater than 20% of Prescribed Dose 2023-03-09T06:00:00 | |