Exposure Device Operator Certification

To perform gamma radiography or operate an exposure device in Canada, by law you must either:

  • Hold a valid exposure device operator (EDO) certificate from the Canadian Nuclear Safety Commission (CNSC), or
  • Be working under the direct supervision of a certified EDO (CEDO)

Our role in EDO certification

The Canadian Nuclear Safety Commission (CNSC) is responsible for certifying exposure device operators. The Natural Resources Canada Non-Destructive Testing Certification Body (NDTCB) serves as the qualifying body for CNSC's written examination for EDO certification.

If you are successful on the EDO written examination, NDTCB will issue you a photo identification card. This card is used in conjunction with a valid CEDO card issued by CNSC.

For questions about EDO certification beyond the written examination stage, please contact CNSC.


Learn about the written examination for EDO certification
Read detailed information about how exposure device operator certification works, including application procedures and training requirements. 

Apply for the EDO written examination
Initiate your EDO certification application by registering for a written examination or re-examination.

Manage your EDO certification
Renew your NRCan photo identification.