Advise a shop on how NDT written-practice documentation should be structured to support both SNT-TC-1A employer-based certification and eventual ISO 9712/ACCP recognition

Steps

1. Confirm that under either scheme, a written practice is a mandatory internal document specifying minimum education, training hours, exams, and experience required for each NDT method and personnel level
2. For SNT-TC-1A, confirm the employer itself is responsible for certifying personnel against its own written practice — there is no external registry that substitutes for this
3. For ACCP/ISO 9712 alignment, confirm the written practice should document how externally-issued Level II/III certificates are evaluated and accepted (or not) by the shop's NDT Level III, since acceptance is a documented determination rather than automatic recognition
4. Confirm the written practice names training-hour and experience minimums per method (e.g., UT, RT, MT, PT) as adopted by the shop, since SNT-TC-1A is a recommended practice with tailorable minimums, not a fixed universal table
5. Recommend the shop have its NDT Level III review and sign the written practice periodically, and keep individual certification records (exam results, vision test currency, experience logs) as the actual verifiable evidence, since no public registry exists to check an individual SNT-TC-1A certification