Event Notification Report for July 17, 2026

EN Revision Imported Date: 7/16/2026

EN Revision Text: AGREEMENT STATE REPORT - STUCK RADIOGRAPHY SOURCE

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

"On July 8, 2026, at 1715 CDT, the Department received a notification that the licensee experienced a disconnect involving an industrial radiography camera. The camera contained an 84.7 Ci Ir 192 source and was positioned on scaffolding, while the collimator was suspended above it on a tank using a magnet. The magnet detached from the tank, jerking the guide tube out of the camera and pulling both the collimator and the source out of the guide tube. The source was manually retracted back into the camera. There was no exposure to the general public, and no occupationally exposed individuals received excessive radiation exposure.

"Additional information will be provided in accordance with SA-300 reporting criteria."

Texas Incident Number: 10306
Texas NMED Number: TX260023

AGREEMENT STATE REPORT - STUCK OPEN SHUTTER

The following information was provided by the Radiation Health Branch (RHB) of the Kentucky Department for Public Health and Safety via email:

"During routine shutter checks, laboratory technicians identified that the shutter on a Texas Nuclear model 5197 fixed gauge would not close using the cable actuator. The radiation safety officer was notified, and a licensed nuclear worker was contacted to perform corrective maintenance. A purchase order for repair work was issued on 7/06/2026, and the licensee scheduled the work to be completed before 7/26/2026."

Manufacturer: Texas Nuclear
Model: 5197
Serial Number: B8233
Radionuclide: Cs-137
Activity: 100 mCi
Radiation Measurement: 2.61 mR/hr at 12 inches

AGREEMENT STATE REPORT - EXTREMITY EXPOSURE EXCEEDING LIMITS

The following is a summary of information provided by the Georgia Radioactive Materials Program via email:

On July 8, 2026, the Georgia Radioactive Materials Program was notified that a research worker at Emory University experienced an extremity overexposure. Dosimetry results indicated that the worker accumulated approximately 131.2 rem extremity exposure year to date, exceeding the annual regulatory limit. A second worker in the same laboratory had previously approached the extremity exposure limit, prompting an earlier stop-work and evaluation.

The licensee reported that the elevated exposures were associated with a significant increase in radiopharmaceutical activity during May and early June 2026. The affected workers were performing radiolabeling and rodent injections involving F-18, Ga-68, and Lu-177. The university noted that these tasks involved small quantities of radioactive materials that required extended hands-on handling, resulting in increased extremity exposure. No contamination was identified and no misuse of personnel monitoring equipment was found.

Upon receiving the extremity exposure alert on June 9, 2026, the radiation safety office issued an immediate stop-work order for radioactive material operations in the laboratory and initiated a full investigation. The licensee conducted workload reviews, dry runs of procedures, and field observations. Medical evaluations, including blood tests and weekly physical exams, were performed and all results were normal.

Corrective actions included mandatory monitoring on both hands, weekly extremity monitoring exchanges, limits on radiolabeling and injection workloads, enhanced glove-change and contamination-check procedures, increased use of tongs, revisions to radiolabeling protocols, and expanded training. Work restrictions remain in place for both affected individuals.

The event is under review by the Georgia Radioactive Materials Program.

Georgia Administrative Code 391-3-17-.03(15)(c)(1)(ii)(I)

GA Incident Number: 125

AGREEMENT STATE REPORT - DAMAGED TROXLER GAUGE

The following information was provided by the PA Bureau of Radiation Protection (Department) via email:

"On July 8, 2026, the licensee notified the Department of a gauge event that occurred on July 7, 2026. It is reportable under 10 CFR 30.50(b)2. A Troxler model 4640-B nuclear density gauge (Serial Number 001153) containing a 9 millicurie Cs-137 source was run over by a roller. The licensee had a company representative onsite with a meter and obtained readings of 0.6 mR/hr at 10 cm. The licensee contacted the manufacturer, Troxler. A Troxler representative said readings would be 30 mR/hr at that distance if the tungsten shield of the gauge was breached. The licensee believes only the case was damaged. Following the manufacturer's guidance, they wrapped the device in insulation, placed it in a metal job box in the back of their truck, and transported it to their yard in Centre County until morning. They planned to transport it to Northeast Technical Service in Maryland for repair or disposal. No overexposures occurred.

"The Department will perform a reactive inspection. More information will be provided as received."

* * * UPDATE ON 07/13/2026 AT 1403EDT FROM JOHN CHIPPO TO IAN HOWARD * * *

The following information was provided by the PA Bureau of Radiation Protection (Department) via email:

"The density tech that was responsible for the gauge was doubling as a roller operator during the shift. The gauge was placed on the ground between readings. The operator got on the roller and proceeded to move the machine which came in contact with the gauge.

"The following day, the gauge was transported to North East Technical Services, Inc. in Maryland for disposal."

Notified R1DO (Carfang) and NMSS Events Notifications (email)

Event Report Number: PA260011