Event Notification Report for July 28, 2023

AGREEMENT STATE REPORT - LOST EXIT SIGNS

The following is a summary of information received from the Colorado Department of Public Health and Environment via email:

The licensee reported four lost exit signs each containing 11.5 Ci of tritium.

Colorado Event Report ID Number: CO230021

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 GAUGE HANDLE
The following information was provided by the South Carolina Department of Health and Environment (the Department) via email:
"On July 20, 2023, at 1507 EDT, the Department was notified by the licensee that while performing semi-annual shutter checks the licensee discovered that the handle on a Berthold LB7440D had broken off which prevented the shutter from being locked. The licensee cordoned off the area and was able to rotate the shutter to the closed and shielded position. The gauge is a Berthold Model LB7440D s/n FT314 and contains a 30 mCi Cesium-137 source. On July 21, 2023, BRH [Bureau of Radiological Health] on-call duty officer met licensee's RSO at 0800, to perform a visual inspection and radiation survey of the gauge. The highest radiation measured was 0.2 mR/hr. The licensee has contacted a licensed vendor to schedule the repair of the handle. "

DOSE TO AN EMBRYO

The following information is a summary of a phone call with the North Kansas City Hospital Radiation Safety Officer (RSO):

On May 10, 2023, a nuclear medicine tech administered 125.7 mCi of I-131 to a patient for the thyroid cancer ablation at North Kansas City Hospital. The patient had received a pregnancy test on May 8, 2023, which was negative.

On July 21, 2023, the hospital was notified that the patient was pregnant with an estimated fetal age of 7-10 weeks which would have had the patient pregnant at the time of administration, or shortly thereafter. This event is being reported because of the potential for a dose to the embryo.

At this time there are no known negative effects to the patient.

PART 21 REPORT - MOTOR DRIVEN RELAY FAILED TESTING

The following information is a synopsis provided by the licensee via email:

River Bend Station completed an internal Part 21 evaluation concerning a motor driven relay that failed pre-installation testing due to a buildup of corrosion between the rotor and relay core. The relay was planned for use in the Remote Shutdown System. The NRC Resident has been notified. A written notification will be provided within 30 days.

Affected known plants include only River Bend at the time of the notification.