Event Notification Report for July 23, 2026

AGREEMENT STATE REPORT - STUCK SHUTTER

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

"On July 15, 2026, the Agency received a notification from the licensee regarding a stuck source shutter on a density gauge. The gauge, a Vega SHF2 Model, contains a 200 millicurie cesium-137 sealed source. The licensee reported that the gauge was found with the source shutter stuck in the open position by technicians conducting routine shutdown operations at the facility on July 14, 2026. Open is the normal operating position. The licensee stated that no worker or members of the public received an unintended radiation dose as a result of this event. The licensee has also arranged the contractor to repair the gauge on July 17, 2026.

"Additional information will be made available in accordance with SA 300 reporting requirements."

Texas Incident Number: 10308
Texas NMED Number: TX260024

AGREEMENT STATE REPORT - MEDICAL EVENT

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

"KY RHB was notified on 7/15/2026, by email and phone conversation with the radiation safety officer (RSO) of Baptist Health Louisville, KY that a patient was administered the wrong radiopharmaceutical on 7/14/2026. A cardiac study patient was prescribed 30 mCi Tc-99m Tetrofosmin (Myoview) but received a dose of 5 mCi Tc-99m Mebrofenin (Choletec). A hepatic dose had been left in the dose calibrator, and the technologist selected that dose instead of the intended cardiac dose. After injection, the technologist noticed the intended dose sitting behind the dose calibrator workbench and immediately contacted the RSO. Dose calculations were compiled by a physics consultant and submitted to the RSO, and no apparent effects to the patient were determined. Additional dose calculations will be provided.

"The cause was determined to be human error. Corrective actions included work-process clarifications and retraining.

"Immediate notifications were made to the authorized user, the patient's ordering physician, and the patient."

KY Event Number: KY 26-0013

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.

* * * RETRACTION ON 07/16/2026 AT 1420 EDT FROM ANGELA WILBERS TO CHRISTOPHER PRESCOTT * * *

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

"Supplemental information indicates the event does not reach reportable criteria."

Dose comparison provided by KY RHB.

Notified R1DO (Carfang), NMSS Event Notifications (email), and acting NMSS Events Coordinator (DiMarco)

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:

"An iridium-192 sealed source contained in a QSA Delta 880 camera [failed to retract into the shielded position]. The radiation safety officer (RSO) reported that the radiography crew was performing the first exposure of the day at a fabrication shop at approximately 0930 CST when the source failed to retract into the shielded safe position. The crew immediately secured the area and notified the licensee, who dispatched a source recovery team. The source recovery team successfully returned the source to its shielded position at approximately 1320 CST. The RSO stated that a faulty guide tube caused the failure to retract and a new guide tube has been purchased for the camera. No individual received any significant exposure from this event.

"Additional information will be made available in accordance with SA300 reporting requirements."

Texas incident number: 10309
Texas NMED Number: TX260025

INVALID SPECIFIED SYSTEM ACTUATION

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

"On May 25, 2026, with Unit 2 at 100 percent power in mode 1, personnel were preparing to calibrate two area radiation monitoring (ARM) power supplies, each associated with an ARM trip unit. During the task preview, it was identified that one ARM trip unit had previously been removed (de-energized) for repair. At 1452 EDT, as part of the calibration activity, the power supply associated with the remaining ARM trip unit was de-energized. Having both ARM trip units simultaneously de-energized caused a partial system isolation. The partial isolation was not in response to an actual plant condition or parameter satisfying the requirements for initiation of the system. Therefore, the actuation was invalid.

"This event is reportable per 10 CFR 50.73(a)(2)(iv)(A) because it was not part of a pre-planned sequence and resulted in the invalid, partial actuation of containment isolation valves (CIVs) in both the primary containment and secondary containment systems, with all systems responding normally.

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