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
- Radiographic interpretation
- Eddy currents
and are conducted by TWI ASNT Level 3 personnel qualified by examination who are
available to assist employers and to administer examinations.