Event Notification Report for September 02, 2025

STOLEN MOISTURE DENSITY GAUGE

The following information was provided by the licensee via phone:

The licensee reported that an InstroTek model 3500 moisture density gauge (s/n 3478, 10 mCi Cs-137, 40 mCi Am-241/Be) was stolen from a vehicle parked overnight. A licensee employee found the gauge stolen with the locks securing the gauge to the vehicle cut with a bolt cutter. The gauge had been properly secured in its transport case in the vehicle. The licensee has reported the theft to the Jackson Police Department.

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 - POTENTIAL GAUGE DAMAGE

The following information was provided by the Louisianna Department of Environmental Quality (LDEQ) via email:

"On August 22, 2025, the Louisiana State Police notified LDEQ that Smitty's Supply Inc. in Roseland had an explosion and was on fire. The explosion and fire resulted in significant damage to the facility.

"At the time of the incident, three nuclear gauge devices, each containing 100 mCi of Americium 241, were present onsite. These gauges could potentially be affected. The fire was finally extinguished on August 25, 2025. An entry team, including a radiation inspector, will enter the facility today, August 26, 2025, to verify/confirm the status of the gauges and radioactive material."

Gauges information:
Gauge 1:
Industrial Dynamics, Device Model No - FT-50B
Device Serial Number 117658
Source - Am-241, 100 mCi
Source Model No - XN240
Source Serial No - Do not have at this time

Gauge 2:
Industrial Dynamics, Device Model No - FT-50B
Device Serial Number 117565
Source - Am-241, 100 mCi
Source Model No - XN240
Source Serial No - Do not have at this time

Gauge 3:
Industrial Dynamics, Device Model No - FT-50B
Device Serial Number 117474
Source - Am-241, 100 mCi
Source Model No - XN240
Source Serial No - Do not have at this time

LA Event Number: LA20250007

FITNESS FOR DUTY EVENT

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

"On August 29, 2025, Sequoyah Nuclear (SQN) operations was informed that a SQN licensed [employee] had tested positive for alcohol, in violation of the Tennessee Valley Authority fitness for duty policy.

"The individual's access has been placed on a 14-day denial.

"The NRC Resident Inspector has been notified."