What is the intent behind SNT-TC-1A for employers regarding their own written practice?

The intent behind SNT-TC-1A for employers regarding their own written practice is to develop a flexible guideline that can be modified. SNT-TC-1A serves as a recommended practice for the qualification and certification of personnel involved in non-destructive testing (NDT). It encourages employers to create written practices tailored to their specific needs while allowing for adjustments as the organization evolves or as industry standards change. This flexibility is crucial because it acknowledges that different employers may have varying operational requirements and training needs. The guideline emphasizes that written practices should align with the general principles outlined in SNT-TC-1A but does not dictate a strict specification, allowing for a more adaptable approach to personnel qualification and certification.