Under what circumstances is the use of SNT-TC-1A mandatory?

The use of SNT-TC-1A, which stands for the "Recommended Practice for Personnel Qualification and Certification in Nondestructive Testing," becomes mandatory when specified by the customer. This indicates that the customer recognizes and requires adherence to this standard for the qualification and certification of personnel involved in NDT processes. It typically reflects a commitment to ensure that the individuals performing critical inspections have met specific industry-recognized qualifications, thus facilitating consistency and reliability in the inspection processes.

The other scenarios, such as conducting internal audits, developing training programs, or performing inventory checks, do not necessarily mandate the use of SNT-TC-1A. While these activities might benefit from the guidelines outlined in the standard, its mandatory application depends on customer requirements rather than being universally applied in these contexts.