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Exposure Device Operator Certification

NRCan NDTCB response to COVID-19 situation

With the ongoing COVID-19 situation, the NRCan NDTCB is working to ensure the health and safety of the public and our team members in accordance with all public safety guidelines. We are closely monitoring the situation and will adjust our business practices and client services rapidly as required. We remain at the ready to assist you as best as we can throughout this situation. We will keep you updated on any developments

At this time, certification processing and services are likely to be disrupted, delayed, and/or postponed. Temporary accommodations and extensions relating to initial certifications and renewals/recertifications will be provided for select candidates. Please visit our NDT Certification Body COVID-19 Program Updates page for more information.

Awareness of and compliance with the COVID-19 and health and safety protocols at training organizations/examination centres: Prior to booking training courses or examinations, clients should verify that they have the most up-to-date information about any local or specific health and safety protocols/requirements in place at the applicable training organization and/or examination centre.

New Electronic Payment System

The NDTCB has introduced an important update to its program for all users. An electronic payment system has been introduced to provide flexibility when applying for certification. Pre-authorized payment included with an application will still be processed. If payment is needed to process your application, you will receive a specific email from the NRCan NDTCB providing you with the appropriate payment link to our secure online payment system.

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.


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