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The following information was provided by … The following information was provided by the Maryland Department of the Environment (MDE) via email:</br>On February 20, 2026, an incident involving a sealed radioactive source at the University of Maryland Department of Environmental Safety, Sustainability & Risk reported to the Maryland Department of the Environment Radiological Health Program (MDE/RHP), that an electron capture device (ECD) sealed source was found to be leaking. </br>The issue was identified during a leak test conducted by the licensee on February 18, 2026, and one of their sources, Model No.19233, serial No. U1669 containing 12.5 mCi of Ni-63 (current activity of 12.49 mCi on February 18, 2026) was found to have elevated removable contamination, but below 0.005 microcuries. A follow-up leak test conducted on February 19, 2026, after this elevated result, found that the source was leaking, with removable contamination greater than 0.005 microcuries. It was reported that no contamination was found outside the ECD unit. </br>Upon detection of the issue, the leaking source was isolated by the licensee and placed into double bagged containment and secured at their licensed university waste building. The licensee will dispose of the source via the appropriate radioactive waste stream.</br>Upon completion of the disposal process, all relevant documentation will be submitted to MDE/RHP.</br>MDE/RHP will follow up with this reactive investigation until the source is securely disposed.igation until the source is securely disposed. +
05:00:00, 20 February 2026 +
58,169 +
10:36:00, 23 February 2026 +
05:00:00, 20 February 2026 +
The following information was provided by … The following information was provided by the Maryland Department of the Environment (MDE) via email:</br>On February 20, 2026, an incident involving a sealed radioactive source at the University of Maryland Department of Environmental Safety, Sustainability & Risk reported to the Maryland Department of the Environment Radiological Health Program (MDE/RHP), that an electron capture device (ECD) sealed source was found to be leaking. </br>The issue was identified during a leak test conducted by the licensee on February 18, 2026, and one of their sources, Model No.19233, serial No. U1669 containing 12.5 mCi of Ni-63 (current activity of 12.49 mCi on February 18, 2026) was found to have elevated removable contamination, but below 0.005 microcuries. A follow-up leak test conducted on February 19, 2026, after this elevated result, found that the source was leaking, with removable contamination greater than 0.005 microcuries. It was reported that no contamination was found outside the ECD unit. </br>Upon detection of the issue, the leaking source was isolated by the licensee and placed into double bagged containment and secured at their licensed university waste building. The licensee will dispose of the source via the appropriate radioactive waste stream.</br>Upon completion of the disposal process, all relevant documentation will be submitted to MDE/RHP.</br>MDE/RHP will follow up with this reactive investigation until the source is securely disposed.igation until the source is securely disposed. +
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, 23 February 2026 +
MD-33-004-01 +
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>.
14:10:59, 5 March 2026 +
10:36:00, 23 February 2026 +
Processing error"Processing error" is a predefined property provided by <a rel="nofollow" class="external text" href="https://www.semantic-mediawiki.org/wiki/Help:Special_properties">Semantic MediaWiki</a> and represents errors that appeared in connection with improper value annotations or input processing.
3.233 d (77.6 hours, 0.462 weeks, 0.106 months) +
05:00:00, 20 February 2026 +
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.