Event Notification Report for February 04, 2026

AGREEMENT STATE REPORT - POTENTIAL OVEREXPOSURE

The following information was provided by the Florida Bureau of Radiation Control via email:

"Unmonitored work was recently performed, resulting in an internal exposure to one of two construction workers. Neither worker was a trained qualified radiation worker so public exposure limits are applicable.

"The two construction workers submitted urine bioassay samples 5 days after working in a room impacted with total and removable alpha and beta surface contamination. There is a history of work with uranium on [a different floor of the facility], and gamma spectroscopy analysis of the positive smear samples did indicate uranium radionuclides.

"One of the two samples was positive for U-238, U-235, and U-234. An assessment of the resulting internal exposure was performed. If the uranium was lung retention Class Y, the resulting dose of 18,000 mrem committed dose equivalent (CDE) to the bone surface exceeds the applicable public CDE limit of 1,000 mrem. Since the lung retention class based on chemical form of uranium is not known for the uranium contamination, it is reasonable to assume that 1/3 of the inhaled uranium was Class Y [e.g. UO2 or U3O8], 1/3 Class W [e.g. UO3], and 1/3 Class D [e.g. uranyl salts]. This still results in a CDE to the bone surface of 6,020 mrem, also exceeding the applicable public exposure limit. If the chemical form of the uranium present is Class W or Class D, there is exposure, but the results are less than applicable public exposure limits.

"This is the initial report, more information to be added as provided by licensee."

Florida incident number: FL26-003

AGREEMENT STATE REPORT - MISSING SEALED SOURCES

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

"On 01/26/2026, RHB received notification from the licensee of two missing sealed sources. The two Cs-137 sealed sources [IPL Model PH10089 (SN A-689 and A-685)] each had an activity of 550 MBq (15 mCi) on 8/1/2006 and were housed within a Hitachi Spectre positron emission tomography (PET) scanner. The licensee was notified of the missing sources at the completion of a decommissioning survey concluded on or about 08/31/2025. The licensee performed an internal investigation which determined on 01/21/2026 that the sealed sources were missing. The licensee believes that the missing sealed sources could have been housed within the PET scanner when it was decommissioned on 08/31/2023. RHB is actively investigating this matter."

California event number: 012626

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 EXIT SIGN

The following is a summary of information that was provided by a Wiedenbach Brown representative via phone:

Wiedenbach Brown coordinated disposal of an expired tritium exit sign on behalf of the licensee, AMC Theater Ward Parkway 14. On 11/5/2025, a third party was hired to retrieve the exit sign and send it to the manufacturer for disposal. When the paperwork to ship out the exit sign was received, the technician for the third-party company couldn't locate the expired exit sign.

Manufacturer: Isolite
Model number: 880-12-6
Serial number: H227725
Activity: 12.16 Ci



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 GAUGE

The following information was provided by the Connecticut Department of Energy and Environmental Protection, Radiation Division, (DEEP) via phone and email:

"On January 28, 2026, at 1525 EST, DEEP, received notification that the general licensee, SCAPA Tapes was unable to locate a general licensed (GL) device, NDC Infrared Engineering, Inc. Model 103, Serial no. 3684 containing 150 millicuries of Americium-241. The GL device had been removed from service in 2025 and was placed in storage to be used as a spare device. After an extensive search, the GL device has not been located and is being reported per 10 CFR 20.2201(a)(1)(i). The licensee will submit a 30-day report."

CT event number: CT-26-0002


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 - DAMAGED TROXLER GAUGE

The following information was provided by the Florida Bureau of Radiation Protection via email:

"At approximately 1445 [EST], Federal Engineering & Testing's radiation safety officer (RSO) was notified by an on-site technician of an incident involving a Troxler soil moisture density gauge. The gauge was struck by a dump truck while in use during a soil survey in the Everglades near the Belle Glade area. The technician reports that the source rod remains intact; however, the plastic casing of the gauge is crushed. The RSO is responding to the site to verify the condition of the source using a survey meter."

Florida event number: FL26-006