American Society for Nondestructive Testing (ASNT) Radiographic Testing Practice Test

The main difference in qualifications between Level II and Level III technicians according to SNT-TC-1A lies in the depth and breadth of their knowledge and expertise in nondestructive testing (NDT) methods. Level III technicians are expected to possess a more advanced understanding of the principles and practices of radiographic testing. This includes not only proficiency in performing and interpreting radiographic tests but also the ability to create and oversee procedures, train others, and have an extensive knowledge of relevant codes and standards.

Level II technicians are skilled in the application and execution of radiographic tests, demonstrating the capability to perform testing independently and accurately interpret results. However, they generally do not have the authority or the comprehensive knowledge required for procedural development or for making critical decisions regarding test methodology.

Thus, the qualifications of Level III technicians indeed exceed those of Level II, highlighting their role as leaders in the field who are responsible for ensuring quality assurance and compliance with established protocols.