Personnel Qualification, Certification, and Administration
Qualification and Certification
Personnel qualification in infrared testing is often based on ASNT Recommended Practice No. SNT-TC-1A or ANSI/ASNT CP-189. Level I, II, and III certifications define responsibilities: Level I performs tests under supervision; Level II can perform and interpret tests; Level III can develop procedures, interpret codes, and certify personnel. Certification requires training, experience, and examination. ASNT offers NDT Level III certification in IR. Administration includes record-keeping, periodic recertification, and adherence to a written practice.
Traps in Questions
- Confusing Level II and Level III responsibilities; only Level III can approve procedures and certify personnel.
- Assuming certification is lifetime; it requires renewal (typically every 5 years).
- Overlooking the need for a written practice per SNT-TC-1A.
- Forgetting that experience requirements vary by method and level.
Worked Example / Rule of Thumb
A common rule: Level II requires a minimum of 12 months of experience in IR (per SNT-TC-1A) and completion of training. Level III requires a 4-year degree plus experience or equivalent. Always document training and experience; audits may require proof.