Level 3 NDT (non-destructive testing) technicians are highly trained and experienced professionals who are responsible for performing advanced NDT inspections and evaluations. Some specific responsibilities of a Level 3 NDT technician may include:

• Developing and implementing NDT inspection procedures and techniques
• Training and supervising lower-level NDT technicians
• Interpreting and evaluating NDT test results
• Writing NDT inspection reports and recommending remedial action
• Maintaining NDT equipment and ensuring that it is in good working order
• Investigating and troubleshooting NDT-related problems
• Working with clients and other stakeholders to determine NDT inspection requirements and goals
• Ensuring compliance with NDT industry standards and regulations

Level 3 NDT technicians typically have a high level of expertise and experience in a specific NDT method or technique, and they are often responsible for providing technical guidance and support to other members of the NDT team. They may also be involved in research and development of new NDT methods and technologies.