ToFD is an innovation of ultrasonic testing which uses two probes. One probe sends the ultrasound and the other one is used as a receiver. Instead of recording the ultrasound that is reflected by defects, it detects diffraction of sound waves that emanate from the tips of a defect. ToFD inspection provides accurate information about the length and height of defects. Unlike other testing methods, ToFD can detect flaws regardless of their orientation. 

ToFD inspection is used for the inspection of welded joints, but it is also extremely suitable for the inspection of forgings, ship hulls, pressure vessels, carriage decks and steel structures. The use of this method is fast and extremely accurate, which has resulted in an increase in its popularity in recent years.


Course duration:

Level 2 10 days

Exam duration:

1 day theory (ISO 9712 and ASNT)
1 day practical


MME Group has an accredited examination centre. That’s why an in-house examination by Hobéon SKO is possible at the end of the course in accordance with NEN-EN ISO 9712.

According to ISO 9712 and / or ASNT


  • Unless indicated otherwise, all NDT courses are taught in Dutch. Please contact us if you are interested in courses in English.
  • Recertifications or tailor-made courses can always be added to the planning.
ToFD (October 2024)

Start date: 07 October 2024

End date: 22 October 2024

Theory exam: 21 October 2024

Practical exam: 22 October 2024

Contact us if you have a question or want to receive a quotation!


Why choose MME Group NDT courses?:

  • Education excellence since 1969
  • Fully certified
  • Level 1, 2 and 3 training
  • 3 theory classrooms
  • 4 practical rooms
  • Case based learning
  • E-learning
  • Fast enrollment possible
  • Also according to PCN
  • Recertification according to ISO 9712, ASNT and PCN

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