Event Notification Report for March 02, 2026

MANUAL REACTOR SCRAM

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

"At 0303 EST on 02/26/26, with Unit 1 in mode 2 at 1 percent power, the reactor was manually tripped as required by procedure due to balance of plant equipment not responding as expected. The trip was not complex, with all systems responding normally post-trip.

"Operations responded and stabilized the plant. Reactor water level is being maintained via the control rod drive (CRD) and reactor water cleanup (RWCU) systems. Decay heat is being removed by the RWCU system. Unit 2 is not impacted.

"Due to the reactor protection system actuation while critical, this event is being reported as a four-hour, non-emergency notification per 10 CFR 50.72(b)(2)(iv)(B).

"There was no impact on the health and safety of the public or plant personnel. The NRC Resident Inspector has been notified."

AGREEMENT STATE REPORT - DAMAGED SOURCE

The following information was provided by the Maryland Department of the Environment (MDE) via email:

"On February 20, 2026, an incident involving a sealed radioactive source at the University of Maryland Department of Environmental Safety, Sustainability & Risk reported to the Maryland Department of the Environment Radiological Health Program (MDE/RHP), that an electron capture device (ECD) sealed source was found to be leaking.

"The issue was identified during a leak test conducted by the licensee on February 18, 2026, and one of their sources, Model No.19233, serial No. U1669 containing 12.5 mCi of Ni-63 (current activity of 12.49 mCi on February 18, 2026) was found to have elevated removable contamination, but below 0.005 microcuries. A follow-up leak test conducted on February 19, 2026, after this elevated result, found that the source was leaking, with removable contamination greater than 0.005 microcuries. It was reported that no contamination was found outside the ECD unit.

"Upon detection of the issue, the leaking source was isolated by the licensee and placed into double bagged containment and secured at their licensed university waste building. The licensee will dispose of the source via the appropriate radioactive waste stream.

"Upon completion of the disposal process, all relevant documentation will be submitted to MDE/RHP.

"MDE/RHP will follow up with this reactive investigation until the source is securely disposed."

AGREEMENT STATE REPORT - SOURCE HOLDER HANDLED BY NON-RADIATION WORKER

The following information was provided by the Utah Division of Radiation Control (the Division) via phone and email:

"Canyon Fuel Company, LLC contacted the Division to report that a source holder containing source material was removed from a fixed gauge by an electrician [non-radiation worker] working at the mine. The shutter was closed when the source holder was removed from the housing. This person was not authorized to remove the source holder.

"The source holder containing source material was removed due to rising water levels in the mine, which exceeded pumping capacity, to prevent the loss of equipment.

"The source holder with the source material is now secured in a lead-lined barrel, which is stored inside a closet secured with two locks.

"Neither dosimetry nor a survey meter was used during this process."

An investigation by the Division is pending.

NMED Event Report: UT260002
Model: Coalscan Model 2100
Serial Number: 4503
Source: 5 millicurie Cs-137 / 100 millicurie Am-241

AGREEMENT STATE REPORT - LOST RADIOACTIVE MATERIAL

The following information was provided by the Arizona Department of Health Services (the Department) via email:

"On February 23, 2026, the Department received a phone call from HonorHealth Scottsdale Shea Medical Center's radiation safety officer (RSO) that a Y-90 shipment was lost. A transport company's driver picked up an 8 GBq Y-90 (Sir-Sphere) dose from the airport and then drove back to his residence. The licensee was then given conflicting information that the car transporting the dose was stolen or towed. The car is still lost, and the dose is still missing.

"The Department has requested additional information and continues to investigate the event."

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 MOISTURE DENSITY GAUGE

The following is a summary of information provided by the Florida Bureau of Radiation Control (BRC) via email and phone:

On February 23, 2026, at 1731 CST, BRC was notified by the licensee's radiation safety officer (RSO) of a damaged moisture density gauge incident. An in-use Troxler soil moisture density gauge model 3430 was run over by a bulldozer at the construction site of a new apartment complex located in Pensacola, FL.

The RSO states that the area has been cordoned off and on-site personnel are ensuring that no one approaches the area until he arrives. The gauge was run over while the rod was deployed. The entire apparatus is crushed flat with the level of the ground.

Personnel from the BRC are responding to the site, and a report update is anticipated.

Device: Troxler Soil Moisture Density Gauge model 3430
Source: Am-241/Be, Cs-137 (activity not reported)

Florida incident number: FL26-014

FITNESS FOR DUTY

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

"At 1723 CST on February 27, 2026, it was determined that a non-licensed supervisor tested positive in accordance with the FFD testing program. The individual's authorization for site access has been terminated.

"The NRC Resident Inspector has been notified."