Event Notification Report for April 03, 2024

AGREEMENT STATE REPORT - DETACHED SOURCE

The following was received from the Texas Department of State Health Services (the Department) via phone and email:

"On March 26, 2024, the Department was notified by the licensee's radiation safety office (RSO) that earlier this day a radiography crew had a source disconnect while using a SPEC 150 exposure device. The device contained a 23 curie, iridium-192 source.

"The disconnect occurred on the first shot of the day. The RSO reported that the radiographers had completed set up for the first shot but had failed to properly connect the guide tube to the camera. When the radiographers cranked the source out and it hit the collimator, the guide tube popped loose from the camera. The radiographer immediately attempted to crank the source back into the camera but when the source reached the end of the guide tube the source pigtail disconnected from the drive cable.

"The radiographers set up new boundaries and contacted the RSO. An RSO from a nearby office responded to the location. The RSO was wearing a self-reading dosimeter (SRD), alarming rate meter, and TLD [thermoluminescent dosimeter] exposure badge. The RSO placed the camera on the source for shielding, attached the source back to the drive cable, and retracted the source into the camera. The responding RSO's SRD was reading off scale after retracting the source. The badge has been sent to the licensee's dosimetry processor for emergency processing.

"The licensee does not believe any individual exceeded any limit due to this event. Additional information will be provided as it is received in accordance with SA-300."

Texas Incident # 10095

AGREEMENT STATE REPORT - LOST EXIT SIGNS

The following is a summary of information received from the Colorado Department of Public Health and Environment via email:

Three SRB Technologies exit signs, model SLXTU1GB10, containing 7.09 curies each of tritium (21.27 curies total) were determined to be lost.

Colorado event number CO240008

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 is a summary of information received from the Colorado Department of Public Health and Environment via email:

Seven Isolite Corporation exit signs, model 2040, containing 11.5 curies each, of tritium (80.5 curies total) were determined to be lost.

Colorado event number CO240007

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

LOST NICKEL-63 SOURCES

The following is a summary of information received from the licensee via phone:

Licensee discovered three electron capture detectors (ECD) were missing on 03/18/2024. Each ECD contained 15 millicuries of nickel-63 (45 millicuries total). The last known accountability of these ECDs occurred at a leak test performed in 08/25/2020. The licensee suspects the ECDs may have been disposed of improperly.

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 is a summary of information received from the Colorado Department of Public Health and Environment via email:

Two Best Lighting Products, Inc. exit signs, model SLXTU1GB10, containing 14.18 curies each, of tritium (26.36 curies total) were determined to be lost.

Colorado event number CO240009

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