ENS 58082

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v t e ENS Event
06:00 Dec 9, 2025
Title	Equipment Failure
Event Description	The following information was provided by the Texas Department of State Health Services (the Department) via phone and email: On December 12, 2025, the Department was notified by the licensee radiation safety officer (RSO) that an event occurred on December 9, 2025, involving its Electra source irradiator. The RSO was not notified of the event until December 12, 2025. The event occurred when a patient was positioned for treatment. Approximately 1.5 seconds into the treatment an alarm occurred, and the irradiator automatically retracted the patient from the machine and closed the shutters on the device, shielding the sources. The technician entered the room and the dose rates appeared normal. Upon further inspection, the technician found one of the shutters had not closed. The technician closed the shutter manually. The RSO stated that after the patient was removed and the shutter manually closed the device was operated and functioned normally. The RSO stated the calculated dose to the patient was 0.7 rem. The patient was prescribed to receive a dose of 25 gray to the brain. The patient's physician was notified of the event and will notify the patient. The cause of the error has not been determined. A vendor has been contacted and will arrive to test the device on December 15, 2025. The RSO stated there will be no adverse effects to the patient from this event. Additional information will be provided as it is received in accordance with SA-300. Texas incident number: 10245

ENS 58082 +/-
Where
The Methodist Hospital Houston, Texas (NRC Region 4)
License number:	L06948
Organization:	Texas Dept Of State Health Services
Reporting

Agreement State
Time - Person (Reporting Time:+82.9 h3.454 days <br />0.493 weeks <br />0.114 months <br />)
Opened:	Art Tucker 16:54 Dec 12, 2025
NRC Officer:	Karen Cotton
Last Updated:	Dec 12, 2025
58082 - NRC Website
v • d • e

v t e Emergency Notification System
The Methodist Hospital with Agreement State
WEEKMONTHYEAR2025-12-09T06:00:00 [Table view]
[ENS list for The Methodist Hospital]

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