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| Start date | Reporting criterion | Title | Event description | System | LER | |
|---|---|---|---|---|---|---|
| ENS 54308 | 17 September 2019 04:00:00 | 10 CFR 20.2201(a)(1)(ii) | Loss and Discovery of Tritium (H-3) Sources | This report is for an item on U.S. Nuclear Regulatory Commission (NRC) License Number 21-32838-01, Docket Number 030-38500. A 30-day report will be sent to NRC Region III in accordance with the Code of Federal Regulations, Title 10, Part 20.2201. On 17 September, at approximately 0855 EDT, the Marine Corps Combat Development Command (MCCDC) received a phone notification from one of their Installation Safety Managers concerning a possible radioactive device found inside a dumpster at an off base construction development site in Stafford County, VA. MCCDC Safety Personnel inspected the device and did not discover any breaches nor cracks of the large tritium vial. The device contained a tag with the radioactive symbol and the statement 'IF FOUND RETURN TO NEAREST MILITARY ACTIVITY.' The device was recovered and transported to the low-level radioactive waste storage locker on the Quantico Marine Corps Base. Item Name: COLLIMATOR, INFINITY AIMING REFER Nomenclature: COLLIMATOR INF A M1A1 National Stock Code: 1240-00-332-1780 Model: 10556235 Serial Number: 1504 Radionuclide: Tritium (H3) Activity: 10 Curies The Department of the Navy, Naval Sea Systems Command Detachment, Radiological Affairs Support Office, contacted the U.S. Army Tank-automotive and Armaments Command (TACOM) Safety Office via telephone on 1 October 2019. The TACOM Radiation Safety Program Manager notified NRC Region III Senior Health Physicist (Piskura) to verify if this item was reported as lost. She could not verify if the item was previously reported as lost and informed TACOM on 2 October 2019 to notify the NRC Operations Center. Additional information will be provided in the 30-day report. 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 53872 | 31 January 2019 06:00:00 | 10 CFR 20.2201(a)(1)(ii) | Report of Loss of Am-241 Sources Contained in Helicopter Lasers | The following is a summary of a call with the US Army Aviation Missile Command. While taking inventory of sources located in decommissioned helicopter lasers, the US Army Aviation Missile Command identified that they were missing 88 Am-241 sources located in 44 helicopter lasers. It can not be determined exactly where the sources were lost, though the licensee is going to provide possible options, including that the lasers could have been lost during combat. It is assumed that the sources are not in public areas. It can not be determined when the sources were lost. The licensee noted that it is unlikely anyone would receive a dose as a result of this loss of material because it is difficult to retrieve the sources. The US Army continues to attempt to find the sources during routine house keeping activities. They have a similar license for a new aircraft and will perform inventory checks more frequently to ensure that any losses are more promptly reported. The licensee has notified the NRC Regional Office. 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 45158 | 16 April 2009 05:00:00 | 10 CFR 20.2201(a)(1)(ii) | Sources Lost During Shipment | Two Improved Chemical Agent Monitors (ICAMs) were lost during a shipment from ORNG (Oregon National Guard) to Guam National Guard. Each ICAM contains a sealed source containing 10 mCi of Ni-63. (SSDR NR-1129-D-103-S). The ICAMs were packaged by ORNG personnel in May, 2007. The missing ICAMs were reported missing to the licensee on 9 Feb 09. In the weeks following the notification, the licensee conducted an investigation to determine if the ICAMs were actually lost or misplaced within military control. The licensee believes the two ICAMs were lost during the transport between Andersen AFB and Guam National Guard between 15-17 Aug 2007. 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. 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 | ||
| ENS 40606 | 23 March 2004 18:15:00 | 10 CFR 20.2201(a)(1)(ii) | the Us Army Reported a Missing Beam Splitter for a M1A1 Tank. | On 03/03/04 the Texas National Guard discovered that one of their M1A1 tanks which was stored in a outside fenced area at their Army training facility in Wylie, Texas was missing a tritium beam splitter from its muzzle reference sensor. A thorough search was made of the entire area with negative results and a wipe of the tank also tested negative. The beam splitter contained a sealed 10 curie tritium source. All of the other tanks stored in the same fenced area with the one having the missing source were inspected and found to be intact.
Following reinspection, it was determined that the tritium beam splitter was not missing from the muzzle reference sensor. The individual who conducted the initial inspection could not see the illumination in the day light. When it was reinspected in a dark area, appropriate illumination was noted. Therefore the source was still in the beam splitter. Notified NMSS (Psyk), R3DO (Madera) and R4DO (Graves). |