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The following information was provided by … The following information was provided by the Colorado Department of Public Health and Environment (the Department) via email:</br>The licensee prepared a shipment of samples in petri dishes containing Pu-239 (0.0869 uCi) and Sr-90 (0.0865 uCi) evenly distributed on 32 planchets with TDS (technical data sheet(s)) on November 3, 2025. The samples were sealed in a box which was vacuum sealed and labeled with a label detailing the package contained radioisotopes. On November 4, 2025, a shipping tracking number could not be located. The shipping department lead contacted the radiation safety officer. Efforts were made following this communication to find the missing package by contacting customers who had received other dangerous goods shipments from that day. No samples were found before the incident was reported by phone and in writing to the Department on December 1, 2025. Corrective actions have not been determined by the licensee at this time and further investigation by the unit is ongoing.</br>Colorado Event Number: CO250045</br>THIS MATERIAL EVENT CONTAINS A 'Less than Cat 3' LEVEL OF RADIOACTIVE MATERIAL</br>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.org/MTCD/publications/PDF/Pub1227_web.pdf +
07:00:00, 4 November 2025 +
58,067 +
13:06:00, 2 December 2025 +
07:00:00, 4 November 2025 +
The following information was provided by … The following information was provided by the Colorado Department of Public Health and Environment (the Department) via email:</br>The licensee prepared a shipment of samples in petri dishes containing Pu-239 (0.0869 uCi) and Sr-90 (0.0865 uCi) evenly distributed on 32 planchets with TDS (technical data sheet(s)) on November 3, 2025. The samples were sealed in a box which was vacuum sealed and labeled with a label detailing the package contained radioisotopes. On November 4, 2025, a shipping tracking number could not be located. The shipping department lead contacted the radiation safety officer. Efforts were made following this communication to find the missing package by contacting customers who had received other dangerous goods shipments from that day. No samples were found before the incident was reported by phone and in writing to the Department on December 1, 2025. Corrective actions have not been determined by the licensee at this time and further investigation by the unit is ongoing.</br>Colorado Event Number: CO250045</br>THIS MATERIAL EVENT CONTAINS A 'Less than Cat 3' LEVEL OF RADIOACTIVE MATERIAL</br>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.org/MTCD/publications/PDF/Pub1227_web.pdf +
Has query"Has query" is a predefined property that represents meta information (in form of a <a rel="nofollow" class="external text" href="https://www.semantic-mediawiki.org/wiki/Subobject">subobject</a>) about individual queries and is provided by <a rel="nofollow" class="external text" href="https://www.semantic-mediawiki.org/wiki/Help:Special_properties">Semantic MediaWiki</a>.
00:00:00, 2 December 2025 +
CO 1046-01 +
Modification date"Modification date" is a predefined property that corresponds to the date of the last modification of a subject and is provided by <a rel="nofollow" class="external text" href="https://www.semantic-mediawiki.org/wiki/Help:Special_properties">Semantic MediaWiki</a>.
02:40:00, 10 December 2025 +
13:06:00, 2 December 2025 +
28.254 d (678.1 hours, 4.036 weeks, 0.929 months) +
07:00:00, 4 November 2025 +
URL"URL" is a <a href="/Special:Types/URL" title="Special:Types/URL">type</a> and predefined property provided by <a rel="nofollow" class="external text" href="https://www.semantic-mediawiki.org/wiki/Help:Special_properties">Semantic MediaWiki</a> to represent URI/URL values.