ENS 40056
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ENS Event | |
|---|---|
20:30 Jun 23, 2003 | |
| Title | Agreement State Report |
| Event Description | On June 23, 2003 at 3:30 PM the [University of Kentucky] radiation safety office received a call from an AU [Authorized User] in the Dept. of Biology, because a shipment of I-125, triiodothyronine, 100 microcuries, had not been received. Upon review of the records it was found that the package had arrived on June 18, 2003, and had measured 10 [millirem]/hr at the surface, 0.1 [millirem]/hr @ 1meter, and no external contamination. The Radiation Safety Office shipping paper record shows the I-125 package was included for delivery to room 109, Research Building 3, on June 19. The required signature of receipt for the package was not obtained. With the DOT shipping labels removed, the greatest likelihood is that the package was put into the ordinary trash. A thorough search of the Radiation Safety Office facilities and vehicles was conducted on June 23. On June 24, the authorized user's lab was searched, including use of a low energy NAI (Tl) detector, as well as all labs where deliveries were made on June 19. No trace of the package or contents has been found. It was concluded that the highest probability was that the package entered the normal waste stream and went to a landfill. Once in a landfill, the I-125 will be sequestered from any contact, and will be essentially non-radioactive in 1.65 years. Assuming worst case scenarios, the dose rate to the torso would be about 10 [millirem]/hr or less, and would have to be held against the body continuously by a single individual for 10 hours1.157407e-4 days <br />0.00278 hours <br />1.653439e-5 weeks <br />3.805e-6 months <br /> to produce a dose in excess of 100 [millirem]. Additionally there is no indication or likelihood of intentional or accidental ingestion of the contents since this is not intended for human use. However, if the entire 100 microcuries were ingested by a single individual, as sodium iodide, the thyroid dose would be 78 rem, and the effective dose would be 2.4 rem. While no thyroid dose information has been found for the triiodothyronine form, the effective dose from ingestion of 100 microcuries would be 17 [millirem]. Surveys are conducted on a continual basis, if the package did not go to a landfill it would likely be found during monthly use area surveys or quarterly supervisory surveys. No NOV was issued based on the corrective actions taken by licensee to correct deficiencies prior to report completion. |
| Where | |
|---|---|
| University Of Kentucky Lexington, Kentucky (NRC Region 2) | |
| License number: | 203-021-72 |
| Organization: | Kentucky Dept Of Radiation Control |
| Reporting | |
| Agreement State | |
| Time - Person (Reporting Time:+1198.67 h49.945 days <br />7.135 weeks <br />1.642 months <br />) | |
| Opened: | Rob Gresham 19:10 Aug 12, 2003 |
| NRC Officer: | Eric Thomas |
| Last Updated: | Aug 12, 2003 |
| 40056 - NRC Website | |
University Of Kentucky with Agreement State | |
WEEKMONTHYEARENS 578872025-08-22T05:00:00022 August 2025 05:00:00
[Table view]Agreement State Medical Event ENS 568162023-10-23T05:00:00023 October 2023 05:00:00 Agreement State Possible Dose Misadministration ENS 567652023-09-28T14:30:00028 September 2023 14:30:00 Agreement State Possible Misadministration ENS 457162010-02-23T15:45:00023 February 2010 15:45:00 Agreement State Agreement State Report - Gamma Knife Treatment to Wrong Location ENS 450112009-04-22T14:00:00022 April 2009 14:00:00 Agreement State Agreement State - Medical Misadministration ENS 411612004-10-22T19:00:00022 October 2004 19:00:00 Agreement State Agreement State Report ENS 400562003-06-23T20:30:00023 June 2003 20:30:00 Agreement State Agreement State Report 2025-08-22T05:00:00 | |
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