TWI provides employer-specific certification in accordance with SNT-TC-1A. The scheme involves a written practice for education, training, experience and examination requirements to be specified by the employer.

Levels 1 and 2

Examinations are carried out in accordance with document SNT-TC-1A to company written practices (supplied by the candidates' sponsor company).

Examinations involving general, specific and practical assessment are available in:

  • Ultrasonics
  • Radiography
  • Radiographic interpretation
  • Eddy currents
  • Magnetics
  • Penetrant

and are conducted by TWI ASNT Level 3 personnel qualified by examination who are available to assist employers and to administer examinations.