The following information was provided by
Texas Department of State Health Services (the Department) via email:
On February 16, 2024, the Department was contacted by the licensee's radiation safety officer (RSO) that the source in a Mark 1 irradiator could not be raised or lowered. The device contains a 10,000-curie cesium-137 source (original activity manufactured 6/25/1986). The source problem was discovered when a researcher was attempting to irradiate a few mice and the source would not raise. The RSO stated they inspected the device and found a fuse that controlled the source's movement both up and down had failed. The RSO stated they had contacted a service company to repair the device. The source is in the fully shielded position. No individuals received any exposure due to this event. Additional information will be provided as it is received in accordance with SA-300.
Texas NMED number: TX240006