Final answer:
The employer is responsible for establishing a written practice for NDT personnel training, examination, and certification as per SNT-TC-1A, which provides the framework for an NDT program.
Step-by-step explanation:
In accordance with SNT-TC-1A, the employer is responsible for establishing a written practice for the control and administration of Non-Destructive Testing (NDT) personnel training, examination, and certification. SNT-TC-1A is a standard that provides guidelines for employers to develop their own written practice that ensures the qualification and certification of NDT personnel are according to industry standards.
The written practice must outline the responsibilities of each level of certification and detail the training, experience, and examination requirements for NDT personnel. The employer's written practice serves as the cornerstone for a company's NDT program and ensures that personnel are capable of performing their duties with a high degree of safety and reliability.