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Exposure device operators

To perform gamma radiography or operate an exposure device in Canada, the law requires you to be certified by the CNSC as an exposure device operator (EDO) or to be working under the direct supervision of a certified EDO. The CSA Group's document CSA PCP-09, Exposure Device Operator Personnel Certification Guide – Revision 1 , is the official guide for CNSC EDO certification and renewal of certification.

As of January 1, 2017, the CNSC will consider a worker qualified to operate an exposure device only if they have a valid EDO certification card (that is, a card issued on or after February 1, 2013 that has not expired). As a result, any EDO whose certification card does not have an expiry date or whose certification card has expired will not be considered qualified to work as a certified EDO.


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Information on EDO certification

EDO candidates – For persons who have completed or are in the process of completing the required elements for initial EDO certification

Certified EDOs – For persons who wish to renew their certification

Certification maintenance - For persons who need to update their address or legal name or apply for a replacement for their lost, damaged or stolen certification card

Vocational training programs – For vocational training providers and the students looking to enroll in vocational training

On-the-job training programs – For groups who design and/or offer on-the-job (OTJ) programs and EDO trainees who are part of OJT programs

Practical examination – For candidates who wish to apply for certification or renew their EDO certification

Written examination – For candidates who wish to apply for certification or renew their EDO certification following a significant interruption in work

Licensees who employ certified EDOs - For licenced employers of certified EDOs and EDO trainees looking for information on their roles and responsibilities related to the EDO program

Exclusions to EDO Certification

Becoming certified as an EDO does not grant the certified EDO permission to perform all regulated activities related to exposure devices or industrial radiography. The following activities require that additional training or certification be obtained through external certifying bodies:

  • maintaining and repairing industrial radiography exposure devices
  • transporting Class 7 dangerous goods
  • working as certified non-destructive testing personnel (RT Level 1, Level 2 or Level 3) CAN/CGSB 48.9712 as administered by Natural Resources Canada
  • responding to industrial radiography emergency situations (e.g. source retrieval)


General forms

Forms specific to initial certification

Forms specific to certification renewal

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