Nondestructive Testing (NDT) technicians and NDT engineers are both professionals who are trained in using specialized techniques to evaluate the integrity of structures and equipment without causing damage. However, there are some key differences between the two roles.

NDT technicians are responsible for performing NDT tests and inspections using a variety of techniques, such as ultrasonic testing, radiographic testing, and magnetic particle inspection. They may also be responsible for maintaining and calibrating NDT equipment, preparing test reports, and communicating test results to other team members.

NDT engineers, on the other hand, have a more strategic and managerial role within the organization. They may be responsible for designing and implementing NDT programs, developing new testing methods and techniques, and managing teams of NDT technicians. NDT engineers may also be responsible for interpreting test results and making recommendations based on those results.

NDT engineers typically have more education and experience than NDT technicians, and may hold advanced degrees in engineering or a related field. They may also be required to hold professional engineering licenses in order to practice.

Overall, the main difference between NDT technicians and NDT engineers is the level of responsibility and authority they have within the organization. While NDT technicians are primarily responsible for performing tests and inspections, NDT engineers have a more strategic and managerial role, and are responsible for designing and implementing NDT programs.