Current Event Notification Report for April 25, 2024

AGREEMENT STATE REPORT - DAMAGED GAUGE SHUTTER

The following was received from the Texas Department of State Health Services (the Department) via email:

"On April 16, 2024, the Department was notified by the licensee that they had removed a Natco model B-20-06 nuclear gauge containing a 175 millicurie (original activity) Cs-137 source from a vessel to allow work on the vessel. The gauge shutter was in the closed position and was functioning normally. Dose rates taken at the gauge before removal were normal at 0.65 millirem per hour.

"After the gauge was removed from the vessel, it was placed on a pallet with other gauges that had been removed from the vessel. At this time, the licensee performed additional radiation surveys, and the dose rate taken within a foot at the top of the gauge shutter was now reading 8.65 millirem per hour. The gauges were all moved to a locked storage location.

"The licensee has contacted a service company to inspect the gauge and determine the cause for the increased dose rates. The licensee's radiation safety officer (RSO) stated the shutter may have been damaged as the gauge was being moved to the pallet. The RSO stated no overexposures had occurred.

"Additional information will be provided as it is received in accordance with SA-300."

Texas Incident No.: 10099

Texas NMED No.: TX240012

AGREEMENT STATE REPORT - MEDICAL UNDERDOSE

The following information was provided by the Pennsylvania Department of Environmental Protection Bureau of Radiation Protection (the Department) email:

"On April 18, 2024, the licensee informed the Department of a medical event. It is reportable per 10 CFR 35.3045.

"On April 17, 2024, a patient was receiving an iodine-131 [sodium iodine solution] treatment. The patient was prescribed 100 mCi of I-131. However, the patient received only 5 mCi of I-131. At this time no other information is available. The Department will update this event as soon as more information is provided.

"The Department will perform a reactive inspection. More information will be provided upon receipt."

PA Event Number: PA240006

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.

AGREEMENT STATE REPORT - STUCK SHUTTER

The following was received from the Texas Department of State Health Services (the Department) via email:

"On April 18, 2024, the Department was notified by the licensee that the shutter on a Vega model SH-F1 nuclear gauge failed to close. The gauge contains a 20 millicurie (original activity) cesium - 137 source. Open is the normal position for the gauge shutter. The licensee reported there is no risk of additional radiation exposure to members of the general public or radiation workers, due to this failure. The manufacturer has been contacted to repair the gauge shutter. Additional information will be provided as it is received in accordance with SA-300."

Texas Incident Number: 10100

Texas NMED Number: TX240013