ASNT VT Level III – Refresher Course (Online)

The ASNT Visual Testing (VT) Level III Refresher Course by NDTWorldwide® is designed for experienced Visual Testing Level II and Level III professionals who are preparing to renew or revalidate their ASNT VT Level III certification. The course focuses on refreshing core technical knowledge and reinforcing Level III responsibilities in a clear, structured, and exam-focused manner.

This refresher program provides a targeted review of key Visual Testing topics, including VT principles and fundamentals, vision and lighting requirements, equipment and accessories, visual inspection techniques, dimensional measurement concepts, and interpretation and evaluation of visual indications. Emphasis is placed on understanding factors that affect inspection results such as lighting conditions, surface finish, discontinuity characteristics, human factors, and inspection
environment.

The course also helps participants remain familiar with VT procedures, documentation and reporting requirements, and applicable safety and health considerations. Through focused revision and practical understanding, candidates strengthen their confidence, technical judgment, and exam readiness, ensuring continued performance as competent and responsible ASNT VT Level III professionals.

Enroll Now Buy Course
ASNT VT Level III – Refresher Course (Online)

Training Objective

ASNT VT Level III – Refresher Course (Online)

    Principles / Theory

    • Understand the fundamentals of visual testing and its role in nondestructive evaluation.
    • Learn the principles of vision, light, and ambient conditions affecting visual inspection.
    • Understand how test object characteristics influence visual examination results.
    • Know when and why visual testing is selected as an inspection method.

    Equipment / Accessories

    • Become familiar with visual testing equipment and accessories.
    • Understand the use of magnifiers, microscopes, mirrors, borescopes, and video systems.
    • Learn the application of machine vision, lasers, replication materials, and surface comparators.
    • Understand lighting requirements, including type and intensity of light.

    Techniques / Calibration

    • Learn direct and remote visual testing techniques.
    • Understand dimensional measurement methods and calibration concepts.
    • Learn sampling and scanning techniques for effective visual inspections.
    • Understand the use of aids such as temperature indicators and chemical aids to support inspection.

    Interpretation / Evaluation

    • Understand variables affecting visual interpretation and evaluation results.
    • Learn how surface condition, material type, and lighting affect inspection outcomes.
    • Interpret visual discontinuities and determine size, depth, width, and length.
    • Apply evaluation criteria to assess acceptance or rejection of inspected items.

    Procedures and Documentation

    • Understand requirements for visual testing procedures and work instructions.
    • Learn how to prepare, review, and approve visual testing procedures.
    • Understand documentation requirements and reporting methods for visual discontinuities.
    • Ensure compliance with applicable requirements and quality systems.

    Safety and Health

    • Understand general safety requirements related to visual testing activities.
    • Recognize hazards associated with inspection environments and equipment.
    • Learn safe practices for personnel, facilities, and inspection tools.
    • Apply safety considerations related to lighting, access equipment, and inspection conditions.

 

Who Should Attend

This ASNT VT Level III – Refresher Course is ideal for professionals seeking certification and technical advancement:

    • Aspiring ASNT VT Level III candidates
    • NDT professionals – Managers, Engineers, Supervisors, Inspectors, Technicians
    • QA/QC & Welding professionals
    • Metallurgists, Mechanical & Production Engineers
    • Asset Integrity & RBI Inspectors
info

Note: No prerequisites to attend the course.
ASNT exam eligibility requires minimum education and experience, as per ASNT published
guidelines.
A focused refresher for professionals aiming at ASNT VT Level III success.

ASNT VT Level III – Refresher Course– Syllabus

Number of Items: 90
Time for Completion: 2 hours

  1. Fundamentals
  2. Vision and Light
  3. Ambient Conditions
  4. Test Object Characteristics
  5. Equipment Accessories
  6. Magnifiers and Microscopes
  7. Mirrors
  8. Dimensional
  9. Borescopes
  10. Video Systems
  11. Machine Vision
  12. Replication
  13. Temperature Indicating Devices and Materials
  14. Chemical Aids
  15. Surface Comparators
  16. Lasers
  17. Applications and Requirements
  18. Raw Materials
  19. Primary Process Materials
  20. Joining Processes
  21. Fabricated Components
  22. In-service Materials
  23. Coatings
  24. Other Applications
  25. Requirements
  26. Variables Affecting Results of Interpretation and Evaluations
  27. Equipment Including Type and Intensity of Light
  28. Material Including the Variations of Surface Finish
  29. Discontinuity
  30. Determination of Dimensions (e.g., Depth, Width, Length)
  31. Sampling and Scanning
  32. Process for Reporting Visual Discontinuities
  33. Personnel (Human Factors)
  34. Documentation
  35. Safety

Books to be Studied (Main References)

Document Edition
1.  ASNT Level III Study Guide: Visual Testing (VT)
 2nd Edition
2. ASNT Level II Study Guide: Visual Testing Method (VT),
 2nd Edition
3. Visual Testing Classroom Training Book
       -
4.ASNT Questions & Answers Book: Visual Testing (VT)
 2nd Edition
5. Quick Reference Method Cards: Visual Testing (VT)
        -
6. Nondestructive Testing Handbook, Vol. 9: Visual Testing (VT)
 3rd Edition
7. Relevant Discontinuities: Visual Testing (VT)
        -
7. Materials and Processes for NDT Technology
 2nd Edition
Click to Buy Books

ASNT VT Level III Refresher Course Schedule

ASNT VT Level III – Refresher Course (Online)

    • Course Dates: 2nd Feb 2026 to 28th Feb 2026 (20 Days)
    • Course Duration: 40 Hours 
    • Course Mode: Online (Through Zoom) 
    • Class timings: 8:30 PM to 10:30 PM IST
Enroll Now

For Registrations & Enquiries

processing...

Want to become an ASNT NDT Level III?

View All Programs