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| Start date | Reporting criterion | Title | Event description | System | LER | |
|---|---|---|---|---|---|---|
| ENS 51048 | 21 April 2015 05:00:00 | 10 CFR 20.2201(a)(1)(ii) | Indium-111 Source Lost in Transit | A consolidated package was shipped to New York on April 7. When the shipment arrived it was missing one of the packages within the consolidated shipping container. At the time of shipment, the package contained 12.7 mCi of In-111 (half-life 2.8 days). The package was a UN 2915 Type A with a 0.1 TI (transportation index) and a weight of 3 lbs. An investigation was conducted with the common carrier. The package was not located. It was declared lost on April 21. 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 | ||
| ENS 50494 | 18 September 2014 05:00:00 | 10 CFR 20.2201(a)(1)(ii) | Lost Depleted Uranium Shields | Mallinckrodt reported the loss of six (6) depleted Uranium shields used as shielding for Tc-99m generators. The licensee believes that the shields were lost in transit between 5/2013 and 9/2013. Five of the shields were in transit between Mallinckrodt and Triad Isotopes (locations in Texas and Hicksville, NY) shipped by "Associated Couriers." One of the shields was in transit between Mallinckrodt and Cardinal Health (Plainville, NY) shipped by "Medical Delivery Services." Each shield is roughly 12 inches in height, 8 inches in diameter, 65 pounds in weight, and contains 8.1 mCi of Uranium. The dose rate on contact would be roughly 3.1 mrem/hr, and the dose at 1 foot would be roughly 1.2 mrem/hr. 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 | ||
| ENS 40731 | 21 April 2004 05:00:00 | 10 CFR 20.2201(a)(1)(ii) | Missing Depleted Uranium Shipping Shield | The licensee reported that an empty 45.7 lb. depleted uranium shipping shield could not be located. The shield was last reported as being shipped back to St. Louis from Mallinckrodt's Beltsville, MD facility on 5/10/03. After an investigation as to the possible location of the shield conducted in early 2004, it was declared lost on 4/21/04. The licensee has contacted NRC Region 3. | ||
| ENS 41166 | 2 November 2003 06:00:00 | 10 CFR 20.2201(a)(1)(ii) | Missing Depleted Uranium Shipping Shield | The licensee reported that an empty 18kg depleted uranium shipping shield could not be located. The shield was supposedly shipped from North Carolina Pharmacy in Greensboro, NC to Mallinckrodt (NRC Materials License #24-04206-01 Docket Number 030-00001), however, no record of delivery was found. After one year of searching, Mallinckrodt has declared the material "lost" as of 11/02/04. Description of the lost source of licensed material Radionuclide: Depleted Uranium shield Physical Form: Solid (Mo-99 generator shielding encased in stainless steel housing) Activity: 18 kilograms Manufacturer: Manufacturing Science Corporation (Oakridge, TN) Model Number: L33200, Serial Number: 002771 The depleted Uranium shield described above was incorporated into a Mo-99 DTE generator and subsequently distributed to the North Carolina Nuclear Pharmacy located in Greensboro, North Carolina (North Carolina Department of Environment and Natural Resources Radioactive Materials license #041-0780-1). As of the date of this letter the shield containing the depleted Uranium has not been located. All efforts, including contacting couriers and searches at both Maryland Heights and the Greensboro pharmacy have been unsuccessful. With the tracking system that is currently in place at Maryland Heights as well as the delinquency notification program, we are able to track the shield when assigned to a shipment and upon its return. Based on these facts, the shield receipt by the customer has been verified, however the shipment from the pharmacy to Maryland Heights could not be verified. The in house tracking system at Maryland Heights shows that the shield was not returned and its disposition at this time is unknown with any degree of certainty. Exposure of individuals and the possible Total Effective Dose Equivalent to persons within unrestricted areas, as a result of the loss of the licensed material, is deemed minimal due to the relatively low activity, and physical nature of the source (i.e., solid, steel-encased source). Site personnel will continue searching for the missing depleted Uranium shield by conducting additional search exercises. In the spirit of ALARA, searching through containers of long-lived radioactive waste materials is not being considered at this time. Additionally, the VP of regulatory affairs for Cardinal Health was contacted concerning this issue. His efforts were also unsuccessful in locating the shield. A full evaluation of the Depleted Uranium accountability and tracking program is in progress through a team approach. This six sigma approach will result in corrective actions that will strengthen the return process and prevent reoccurrence. The scheduled completion of this six sigma project is March 2005. | ||
| ENS 40338 | 31 October 2003 06:00:00 | 10 CFR 20.2201(a)(1)(ii) | Missing Cesium-137 Check Source | During an inventory on 10/31/03, it was discovered that a sealed Cs-137 instrument check source was missing from its storage location. The source strength is 232.5 microcuries as of 11/18/03. The source was last seen during the previous inventory on 05/08/03. |