Qualifying Work Experience for NDT Certification

Individuals who want to become certified in non-destructive testing need a combination of appropriate training and work experience. This page describes the required work experience.

Experience requirements for certification levels

The minimum requirements for experience to be gained prior to certification are as specified below. The employer must verify documentary evidence of experience on pages 3 and 4 of the Application form for Non-destructive testing certification (PDF, 1.58 Mb) and provide it to the NRCan Non-Destructive Testing Certification Body (NDTCB).

Industrial experience

NDT Method Months of Experience Required
Level 1 Level 2 Level 3
ET, RT, UT 3 9 18
MT, PT, VT 1 3 12


  • ET = Eddy Current
  • RT = Industrial Radiography
  • PT = Liquid Penetrant
  • MT = Magnetic Particle
  • UT = Ultrasonics
  • VT = Visual Testing

In the event that a part of the experience is sought following successful examination, the results of the examination are valid for two years or for the total experience time required for the methods concerned, whichever is greater.

Important note: Candidates are required to show that for each of the testing methods for which they seek certification, they have a minimum of 50% of the time required (shown in the table above). Practical admittance and registration forms will not be administered otherwise.

Minimum experience prior to examination

For written examinations:

  • Level 1: 0%
  • Level 2: 0%
  • Level 3: 25%

For practical examinations:

  • Level 1: 50%
  • Level 2: 50%
  • Level 3: 50%


  • Work experience in months is based on a nominal 40-hour week (175 hours/month) or the legal week of work. Any individual working in excess of 40 hours/week may be credited with experience based on the total hours, but will need to produce documentary evidence of this experience.
  • For Level 2 certification, work experience consists of NDT work time as an individual certified to Level 1. If the individual is being qualified directly to Level 2 with no time at Level 1, the experience must consist of the sum of the times required for Level 1 and Level 2.

Additional experience requirements for Level 3

Level 3 responsibilities require knowledge beyond the technical scope of any specific NDT method. This broad knowledge may be acquired through various combinations of education, training and experience that must be documented and provided to the certification body.

Reductions in qualifying work experience

Reductions may be considered for simultaneous experience in different methods for:

  • MT2, PT2, VT2
  • PT3, MT3, UT3, ET3, RT3

There is no reduction for simultaneous experience in different methods for:

  • Level 1s – All methods
  • Level 2s – Volumetric Methods

The percentage of qualifying work experience that can be deducted for simultaneous experience in different methods is shown below:

  • two testing methods: reduction of total required time by 25%;
  • three testing methods: reduction of total required time by 33%;
  • four or more testing methods: reduction of total required time by 50%.

The maximum reduction for qualifying work experience in a given NDT method is 50%.

Limits on practical workshop experience

Limits are placed on the experience gained from practical workshops at Accepted Training Organizations (ATOs):

  • 5 days maximum of practical workshop experience for all methods (equivalent to 25 days of experience) can count towards total qualifying work experience required in a given method
  • Note: The duration of experience gained in practical workshops may be multiplied by a factor of 5 when calculating qualifying work experience (e.g. if you complete a 2-day practical workshop, you may multiply that by five to count for 10 days of qualifying work experience).

Calculating experience credits

Situation 1:

An NDT candidate is applying for Level 2 Radiographic Testing (RT) examination eligibility, which requires 12 months of experience, working 100% of the time in RT inspection.


Acquired NDT Experience: 48 months
Percentage of time: Radiographic Testing 25% 
Calculation: 48 months x 25% RT = 12 months’ experience

This NDT candidate satisfies the experience time requirements for Level 2 Radiographic Testing.

Situation 2:

The same NDT candidate as in situation 1, above, is also applying for examination in Level 2 Ultrasonic Testing (UT). Level 2 Ultrasonic Testing requires 12 months of work experience, working 100% of the time in UT inspection.


Acquired NDT Experience: 48 months
Percentage of time: Ultrasonic Testing 20% 
Calculation: 48 months x 20% UT = 9.6 months’ experience gained

This NDT candidate would not satisfy the experience time requirements for Level 2 Ultrasonic Testing, as the experience time requirement of 12 months would not be met. However, the candidate could challenge practical examination by indicating on the application that he/she is applying without the qualifying work experience as he/she has obtained at least 50% of the required work experience hours needed to challenge the practical examination.

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