The following was reported by the state of
Oklahoma via email:
Globe X-ray Services, Inc., a radiography company, reported via phone this morning that a technician's dosimeter received a 5.3 rem dose. The dose was reported on the January dosimetry report and the licensee learned about it yesterday.
The licensee is currently working with Landauer [badge supplier] to have the badge processed further, and is investigating the exposure.
No additional information is known at this time, we will provide updates as additional information becomes available.
Oklahoma event Number: Not Assigned
- * * UPDATE ON MARCH 15, 2021, FROM ELIZABETH McCASKILL TO THOMAS HERRITY * * *
The following update was received form the state of Oklahoma via email:
The badge reading was: 5132 mrem DDE, 5192 mrem LDE and 5192 mrem SDE.
The RSO stated that they believe the Landauer dosimeter received the dose on January 22, 2021.
The RSO interviewed the radiographer and it is believed that the Landauer dosimeter was in a jacket pocket in the shooting area during exposures.
The alarming ratemeter and pocket dosimeter readings were not elevated for January 22, 2021.
The licensee has contacted Landauer and are awaiting imaging results to determine if the exposure was static.
Notified R4DO (Kellar), and NMSS Events Notification via email.
- * * UPDATE ON MARCH 25, 2021 AT 11:42 EDT FROM ELIZABETH McCASKILL TO THOMAS HERRITY* * *
The following update was received form the state of Oklahoma via email:
The licensee's investigation determined that the overexposure was to the badge, not to the individual. The licensee reported that the radiographer removed his jacket containing his dosimeter and laid the jacket in the area near where radiographs were being taken. He made approximately 12 exposures with a 56 curie Ir-192 source with the jacket in the area.
The radiographer's direct reading dosimeter was not off scale and his alarming ratemeter did not alarm. The second radiographer on site also reported that the individual was using his survey meter. Results from Landauer were inconclusive regarding the exposure being static or dynamic. Based on the licensee's findings, they have requested that Landauer adjust the recorded dose to the individual as 114 [milliRem] for January 2021."
Notified R4DO (Werner), and
NMSS Events Notification via email.