Which standard defines qualifications for nondestructive examination personnel?

Which standard defines qualifications for nondestructive examination personnel?

• A. ISO 9712
• B. ASNT SNT-TC-1A
• C. NAS 410
• D. ANSI N45.2

Answer: (B)

Defining who is qualified to perform nondestructive testing is about establishing a structured, employer-based qualification framework. The standard most commonly used for this is ASNT SNT-TC-1A. It provides a recommended practice for training and qualification of NDT personnel, detailing the levels of competency (I, II, III), the methods covered, the required training hours, examination requirements, and the amount of practical field experience needed for each level. Since it is employer-driven, a company designs its own qualification program around these guidelines and then certifies personnel accordingly. This makes it the best fit for defining qualifications in a general sense. Other standards serve different roles: ISO 9712 relates to third-party certification schemes and is more about independent certification; NAS 410 is aerospace-specific; ANSI N45.2 focuses on broader QA requirements rather than the qualification framework for NDT personnel.

Defining who is qualified to perform nondestructive testing is about establishing a structured, employer-based qualification framework. The standard most commonly used for this is ASNT SNT-TC-1A. It provides a recommended practice for training and qualification of NDT personnel, detailing the levels of competency (I, II, III), the methods covered, the required training hours, examination requirements, and the amount of practical field experience needed for each level. Since it is employer-driven, a company designs its own qualification program around these guidelines and then certifies personnel accordingly. This makes it the best fit for defining qualifications in a general sense.

Other standards serve different roles: ISO 9712 relates to third-party certification schemes and is more about independent certification; NAS 410 is aerospace-specific; ANSI N45.2 focuses on broader QA requirements rather than the qualification framework for NDT personnel.