CNSC Audit Preparation for Inspection Companies
A CNSC audit runs in 7 stages, beginning with apply for the licence following regdoc-1.6.. Canadian Nuclear Safety Commission (CNSC), acting under the Nuclear Safety and Control Act and its regulations tests the system by sampling finished work backwards to the records behind it, so preparation means reconciling records to jobs rather than rewriting manuals.
The CNSC does not certify NDT methods. It licenses the company and certifies the person who operates an exposure device. An inspection provider doing industrial radiography needs a Nuclear Substances and Radiation Devices licence covering use type 812, a named Radiation Safety Officer with documented training including a source retrieval course, a radiation protection programme built on ALARA, dosimetry from a CNSC-licensed dosimetry service, an Emergency and Operating Procedures manual, sealed source leak-test and device maintenance records, and certified Exposure Device Operators. On nuclear plant pressure-retaining components the NDE method certification requirement comes from the CSA N285 series and points at CAN/CGSB-48.9712 rather than at any CNSC document. What separates firms that clear an audit from firms that collect findings is not the quality of the documentation but whether it describes what actually happens. The finding recorded most often is: An uncertified worker operating an exposure device, or a trainee not under direct supervision and continuous observation
Source: Verified August 2026 against CNSC published regulatory documents and pages: REGDOC-2.2.3, Personnel Certification, Volume I: Exposure Device Operators, Version 1.1, last modified 19 December 2022, made under the Nuclear Substances and Radiation Devices Regulations pursuant to the Nuclear Safety and Control Act, which references CSA PCP-09, Exposure Device Operator Personnel Certification Guide – Revision 1, published August 2021; REGDOC-1.6.1, Licence Application Guide: Nuclear Substances and Radiation Devices, Version 2.1 (Version 2 superseded Version 1 of October 2015), for use type 812 and the application content; REGDOC-2.5.7, Design, Testing and Performance of Exposure Devices, Version 1.1; REGDOC-2.7.1, Radiation Protection, and REGDOC-2.7.2, Dosimetry, Volumes I and II; Radiation Protection Regulations (SOR/2000-203) for dose limits and the licensed dosimetry service threshold; CNSC "Exposure device operators" and "Certified exposure device operators" pages. The NRCan NDTCB role as qualifying body for the EDO written examination is confirmed on the NRCan NDTCB FAQs page. The Canadian nuclear NDE certification position (CAN/CGSB-48.9712 required, SNT-TC-1A accepted for ASME-stamped components with AIA and licensee agreement) is taken from WNA CORDEL report 2014/003, "Certification of NDE Personnel — Harmonization of International Code Requirements", October 2014, and should be re-checked against the current CSA N285.0 and N285.4 editions (N285.4:23 is the eighth edition) before being relied on contractually.
| Stage | What happens | What it tests |
|---|---|---|
| Stage 1 | Apply for the licence following REGDOC-1.6. | Where the paperwork is tested against itself |
| Stage 2 | Appoint and evidence the Radiation Safety Officer, including the job description, qualifications, RSO training certificate and the source retrieval course. | Where the paperwork is tested against practice |
| Stage 3 | Submit the radiation protection programme, the Emergency and Operating Procedures manual, operating procedures, safety and emergency equipment inventory, and personnel. | Where the paperwork is tested against practice |
| Stage 4 | CNSC reviews the application and issues the licence with conditions limiting activities, locations, nuclear substances and devices. | Where the paperwork is tested against practice |
| Stage 5 | Certify the operators: candidates complete vocational and on-the-job training, then pass the written examination — the NRCan NDTCB is the. | Where the paperwork is tested against practice |
| Stage 6 | Operate under continuing obligations: dosimetry through a licensed service, leak testing, quarterly and annual device maintenance records, and notification to. | Where the paperwork is tested against practice |
| Stage 7 | CNSC compliance verification through desktop review and on-site inspection, followed by licence renewal on its stated term. | Where the paperwork is tested against practice |
| Renewal | Exposure Device Operator certification is renewed every five years. Renewal requires documentary evidence of successful completion of the EDO practical examination, and a written examination is additionally required after a significant interruption in work. Since 1 January 2017 only EDO cards issued on or after 1 February 2013 are recognised, and cards must not be expired. The CNSC expects the practical examination to be administered by a certified EDO who administers examinations at an NRCan Authorized Examination Centre, or who has held certification for at least five years, or who has been authorised by their licensed employer to conduct practical examinations. Company licences run for the term stated on the licence and are renewed by application; dose limits for nuclear energy workers under the Radiation Protection Regulations are 50 mSv in a one-year dosimetry period and 100 mSv over five consecutive years, with a licensed dosimetry service required where there is a reasonable probability of exceeding 5 mSv in a year. | Diarised from the certificate date, not the last audit |
How long does CNSC audit preparation take?
Document work — the written practice, procedures and quality manual — takes weeks. What cannot be compressed is documented experience and records history: on-the-job hours accrue in real time, and calibration and certification history cannot be back-filled. Firms that start when the audit is scheduled rather than announced clear it without findings.
What does Canadian Nuclear Safety Commission (CNSC), acting under the Nuclear Safety and Control Act and its regulations look at first?
Records, not manuals. A manual states intent; records show practice. The usual opening move is to take a completed job and trace it back to the technician's certification, the instrument's calibration, the approved procedure and the report — and see whether all four reconcile.
What are the most common CNSC findings?
An uncertified worker operating an exposure device, or a trainee not under direct supervision and continuous observation, Change of Radiation Safety Officer not reported to the CNSC within 15 days, Dosimetry obtained from a service not licensed by the CNSC where doses above 5 mSv per year are reasonably probable, Quarterly or annual exposure device maintenance records missing or incomplete. Almost all of them are evidence problems rather than capability problems: the work was done correctly and the proof was not kept, or was kept somewhere the firm could not retrieve during the audit.
Can a consultant attend the CNSC audit?
Yes, and it changes the outcome. Someone who has sat through the same audit at other firms answers in the auditor's own terms, produces the right record without a search, and stops a clarification turning into a finding. The firm still owns every answer — the consultant does not speak for it.
What happens after a CNSC finding?
A corrective action with a deadline, and evidence of closure at the next audit. Repeat findings are treated far more seriously than first ones, because they show the corrective-action system itself is not working.
Does CNSC require a pre-audit or gap assessment?
Not as a requirement, but the arithmetic favours it: a gap assessment finds the same evidence problems the auditor would, without the finding attached, and while there is still time to fix them. Firms entering their first CNSC audit blind typically collect findings that a sampling exercise would have caught.
What the auditor asks to see
- Nuclear Substances and Radiation Devices licence covering use type 812 for industrial radiography
- Completed "Request to Appoint a Radiation Safety Officer" form, with an RSO job description setting out roles, responsibilities, qualifications and authority
- RSO training course certificate and, for use type 812, a source retrieval course training certificate
- Emergency and Operating Procedures (EOP) manual
- Radiation protection programme documentation demonstrating dose control and ALARA
- Dosimetry records obtained from a CNSC-licensed dosimetry service
- Sealed source leak testing records, and quarterly and annual exposure device maintenance records
- Valid CNSC Exposure Device Operator certification cards for every operator, plus training logs for trainees
- Transport package registration and packaging documentation, one registration per certificate number
Findings to close before the audit
- An uncertified worker operating an exposure device, or a trainee not under direct supervision and continuous observation
- Change of Radiation Safety Officer not reported to the CNSC within 15 days
- Dosimetry obtained from a service not licensed by the CNSC where doses above 5 mSv per year are reasonably probable
- Quarterly or annual exposure device maintenance records missing or incomplete
- Sealed source leak test overdue against the licence condition
- Emergency and Operating Procedures manual not current, or not available at the work site
- RSO appointed without the source retrieval course certificate required for use type 812
- EDO card issued before 1 February 2013 still being presented as valid
- Transport packaging used without the corresponding package registration
Related: the CNSC overview, outsourced ASNT Level III cover, written practice development, NDT procedure development, a programme gap assessment, interim Level III cover.