Event Notification Report for September 16, 2026

LOST SOURCE

The following information was provided by the licensee via phone:

The licensee reported that a line source containing 0.624 mCi of gadolinium-153 used for single-photon emission computed tomography (SPECT/CT) imaging was lost by a common carrier. The source was being returned to the manufacturer in Burbank, CA. The source was picked up by the common carrier on July 20, 2026. After continuous follow-up with the common carrier, they declared the source lost on August 20, 2026.

* * * RETRACTION ON 09/10/2026 AT 1500 EDT FROM ERIN BELL TO JOSUE RAMIREZ * * *

The following information was provided by the licensee via phone:

The licensee is retracting this event notification as the presumed lost package was delivered to the intended recipient on August 27, 2026. The package appeared to be in an intact condition.

Notified R3 (Edwards), NMSS Events Notification (Email), and ILTAB (Email).

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 - STUCK SHUTTER

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

"On August 8, 2026, the Agency was notified by the licensee that the source shutter mechanism on a nuclear gauge had failed to function as designed. The gauge, a VEGA model SHF1, contains a 60 millicurie cesium-137 source. The licensee reported that the gauge was discovered with the source shutter stuck in the open position. Open is the normal operating position. This discovery was made during a gauge inspection and shutter check on September 8, 2026. The licensee stated that there is no risk of additional radiation exposure to members of the public or radiation workers due to this on/off mechanism failure.

"Additional Information will be made available in accordance with SA 300 reporting requirements."

Texas incident number: 10325
Texas NMED number: TX260036

AGREEMENT STATE REPORT - STOLEN EXIT SIGN

The following information was provided by the California Department of Public Health, Radiologic Health Branch (RHB) via email:

"On September 8, 2026, a Wiedenbach Brown Lighting project manager, notified RHB via email that a tritium exit sign was stolen from an AMC theatre in Brentwood, CA on August 14, 2026. The details such as make, model, serial number and tritium content are still being sought out from the losing entity but since the sign certainly had at least 1 Ci of H-3, RHB is reporting it now. The incident has also been reported to the Brentwood Police Department under report number 260020181. RHB is investigating this matter further."

California 5010 Event Number: 090826


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

FITNESS FOR DUTY
The following information was provided by the licensee via phone and email:

"At 1011 EDT, on September 15, 2026, it was determined that a licensed operator failed a test specified by the fitness-for-duty testing program. The individual's authorization for site access has been terminated.

"The NRC Resident Inspector has been notified."