Event Notification Report for August 18, 2026

AGREEMENT STATE REPORT - LOST EXIT SIGNS

The following information was provided by the Colorado Department of Public Health and Environment via email:

Eight tritium exit signs were declared lost by the licensee on July 16, 2026. The exit signs are Isolite Corporation model SLXTU1RW10, containing 7.09 Ci of tritium each.

Colorado Event Number: CO260017

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

AGREEMENT STATE REPORT - LOST EXIT SIGNS

The following information was provided by the Colorado Department of Public Health and Environment via email:

Four tritium exit signs were declared lost by the licensee on June 30, 2026. The exit signs are Safety Light Corporation model 2040, containing 9.25 Ci of tritium each.

Colorado Event Number: CO260018

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

AGREEMENT STATE REPORT - LOST SOURCE

The following information was provided by the Texas Department of State Health Services (the Department) via phone and email:

"On August 11, 2026, the Department received notification from the licensee regarding a missing industrial radiography camera. The camera, an Industrial Nuclear Company [model] IR 100, contains a 90 Curie iridium-192 sealed source. The licensee stated that the trainer placed the camera at the back of the truck around 0600 CDT while preparing to leave the licensee's Wichita Falls office for a temporary jobsite in Weatherford [Texas]. The trainer did not place the camera inside the transport box and did not close the vehicle tailgate before departing. The trainer drove to the destination and realized upon arrival that the camera was missing and that the vehicle's tailgate was down. The radiation safety officer (RSO) stated that a team has been searching for the camera since this morning and will continue the search throughout the evening. The RSO stated that local law enforcement has been notified of the missing radioactive source in Wichita Falls. Additional information will be made available in accordance with SA-300 Reporting requirements."

Texas Incident number: 10318
Texas NMED number: TX260033

Notified DHS SWO, FEMA Ops Center, USDA Ops Center, HHS Ops Center, DOE Ops Center, CISA Central Watch Officer, EPA EOC, FEMA NWC, FDA EOC (email), DHS Nuclear SSA (email), FEMA NRCC SASC (email), CWMD Watch Desk (email).


* * * UPDATE FROM ART TUCKER TO ERNEST WEST ON 08/12/2026 AT 1510 EDT * * *

The following information was provided by the Texas Department of State Health Services (the Department) via phone and email:

"On August 12, 2026, two department investigators conducted a search for the missing camera and found it in Mineral Wells [Texas] at 1342 CDT. The source was found in a culvert at the intersection of highway 281 and 1821. The licensee has been informed and is enroute to collect the camera. Based on the location where the source was found, it does not appear that any individual would have received an exposure that would have approached any limit"

The following additional information was obtained from the licensee in accordance with Headquarters Operations Officers Report Guidance:

The source was found in the fully shielded position and there was no damage to the radiography camera.

Notified NMSS (Allen), RGLO (Alexander), ILTAB Branch Chief (Brown), IR MOC (Grant), INES National Officer (Smith via email), ILTAB (email), NMSS Event Notification (email), CNSNS (email).

Notified DHS SWO, FEMA Ops Center, USDA Ops Center, HHS Ops Center, DOE Ops Center, CISA Central Watch Officer, EPA EOC, FEMA NWC, FDA EOC (email), DHS Nuclear SSA (email), FEMA NRCC SASC (email), CWMD Watch Desk (email).

THIS MATERIAL EVENT CONTAINS A 'Category 2' LEVEL OF RADIOACTIVE MATERIAL

Category 2 sources, if not safely managed or securely protected, could cause permanent injury to a person who handled them, or were otherwise in contact with them, for a short time (minutes to hours). It could possibly be fatal to be close to this amount of unshielded radioactive material for a period of hours to days. These sources are typically used in practices such as industrial gamma radiography, high dose rate brachytherapy and medium dose rate brachytherapy. For additional information go to http://www-pub.iaea.org/MTCD/publications/PDF/Pub1227_web.pdf