Event Notification Report for October 30, 2026

EN Revision Imported Date: 10/30/2026

EN Revision Text: AGREEMENT STATE REPORT- LOST/STOLEN GAUGE

The following was received Texas Department of State Health Services, via email:

"On October 13, 2021, a licensee reported a moisture density gauge was stolen overnight. The gauge was taken from the back of a truck between 18:00 (EDT) on October 12, 2021 and 06:00 (CDT) October 13, 2021. The gauge was stored and locked within the carrying case but was not secured to the truck. The gauge is a Troxler model 3411 serial 11111 containing 8 mCi of Cs-137 with serial 47- 6513 and 40 mCi of Am-241 with serial 40-8612. Because the gauge was secured within the case it is not expected to provide any significant dose to anyone. The incident was reported to the local police department. More information will be provided per SA 300 as it is obtained."

Texas Incident Number: 9890

* * * UPDATE ON 10/29/2026 AT 2100 EDT FROM SINDISO NCUBE TO JON LILLIENDAHL * * *

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

"On October 29, 2026, the Texas Department of State Health Services was notified by the Fort Worth Police Department that they had recovered the stolen moisture density gauge. The reporting officer stated that the gauge was recovered on October 28, 2026, when an officer found it in the presence of an individual who was taken into police custody.

"Additional informational will be provided in accordance with SA300 reporting requirements."

Notified NMSS Events Notification, ILTAB (email), and Mexico CNSNS (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

EN Revision Imported Date: 10/30/2026

EN Revision Text: UNPLANNED CONTAMINATION EVENT

The following information was provided by the licensee via phone:

The licensee's radiation safety officer was notified on September 30, 2026, at 1431 EDT, that 4 improved chemical agent detectors were inadvertently shredded at an industrial shredder facility located in the Marine Corps Logistics Center in Albany, GA. The detectors each contained a 15 mCi Ni-63 source. The sources were shipped from Germany with an intended destination in Kentucky. It is unknown how the detectors were sent to the disposal facility.

The waste from the industrial shredder ended up in a dedicated Department of War landfill. The US Navy is in charge of the clean-up and decontamination operations at the shredder. Results from surveys and wipes of the shredder were all less than the minimum detectable activity.

* * * UPDATE ON 10/29/2026 AT 1435 EDT FROM NATHAN KRZYANIAK TO JON LILLIENDAHL * * *

The following information was provided by the licensee via phone:

The radiation safety officer updated this event notification to include two additional reporting criteria: 10 CFR 20.2201(a)(1)(ii) and 10 CFR 20.2201(a)(1)(i).
10 CFR 20.2201(a)(1)(ii), for the 4 detectors that were initially reported as shredded in Georgia and are unrecoverable.
10 CFR 20.2201(a)(1)(i), for the loss of control of 5 additional licensed items, that would increase the total activity to between 90 and 145 millicuries of nickel, and that were not included in the initial report.

Notified NMSS R3 (Edwards), NMSS Events Notification, 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 - MEDICAL EVENT

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

"A medical event occurred involving an underdose during a Y-90 TheraSphere treatment for a liver lesion. The prescribed activity was 0.65 GBq (17.1 mCi), with a prescribed dose of 680 Gy to the treatment site. Following the procedure, imaging of the patient and the waste container indicated that none of the intended activity had been delivered to the patient. The licensee determined that the entire prescribed activity was retained within the microcatheter tubing, likely due to a kink or obstruction associated with the patient's tortuous vasculature. As a result, the patient did not receive any of the prescribed treatment.

"The licensee will conduct a full investigation of the incident. A written follow up report will be submitted within 15 days in accordance with applicable reporting requirements."

5010 number: 102226

A Medical Event may indicate potential problems in a medical facility's use of radioactive materials. It does not necessarily result in harm to the patient.

AGREEMENT STATE REPORT - FAILED LEAK TEST

The following information was provided by the Radioactive Material Compliance Branch of the Alabama Department of Public Health via email:

"On October 21, 2026, the licensee reported that one of their electron capture detector (ECD) sources failed a leak test in preparation for disposal. The ECD source is an Eckert and Ziegler Ni-63 source with a 10 mCi activity and an assay date of January 1, 2026. The source model number is GL1318, and the serial number is SS2197. The device it was removed from is a Shimadzu GC-2104 with a serial number of C11485014099SA. After it was determined that the sealed source was leaking, the Shimadzu GC-2014 and the area were wiped, and no removable contamination was detected. The Ni-63 sealed source was placed in Auburn University's radiological waste area and is awaiting pickup by a commercial waste vendor."

Alabama incident number: 26-018