ASNT RT Level III – Refresher Course (Online)

The ASNT Radiographic Testing (RT) Level III Refresher Course by NDTWorldwide® is designed for experienced Radiographic Testing Level II and Level III professionals who are preparing to renew or revalidate their ASNT RT 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 Radiographic Testing topics, including RT principles and theory, radiation sources, detectors, radiographic techniques, exposure calculations, and calibration concepts. Emphasis is placed on understanding imaging considerations, film and digital radiography practices, radiographic quality requirements, and proper technique selection for different materials and applications.

The course also helps participants remain familiar with interpretation and evaluation of radiographic images, applicable acceptance criteria, and development and approval of RT procedures. Strong focus is given to radiation safety and health, including exposure hazards, radiation control methods, dosimetry, and operational and emergency procedures. Through focused revision and practical understanding, candidates strengthen their confidence, technical judgment, and exam readiness, ensuring continued performance as competent and responsible ASNT RT Level III professionals.

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Training Objective

ASNT RT Level III – Refresher Course (Online)

Principles / Theory

Understand the fundamental principles of radiographic testing.
Learn the nature of radiation and image formation.
Understand the characteristics of electrically generated and particulate radiation sources.
Know when and why radiographic testing is the appropriate inspection method to use.

Techniques / Calibration

Understand radiographic techniques and exposure methods.
Learn calibration concepts related to radiographic equipment and detectors.
Understand exposure calculations and factors affecting radiographic quality.
Apply calibration and setup requirements to achieve consistent and reliable results.

Radiographic Techniques

Learn film and digital radiographic techniques used for different applications.
Understand imaging considerations, film processing, and viewing of radiographs.
Apply radiographic techniques for different materials, thicknesses, and geometries.
Understand limitations and selection of appropriate RT techniques.

Interpretation / Evaluation

Understand methods for judging radiographic quality.
Learn how to interpret radiographic images and identify discontinuities.
Evaluate radiographic indications against acceptance criteria.
Apply interpretation results to support acceptance or rejection decisions.

Procedures

Understand requirements for radiographic testing procedures.
Learn how to prepare, review, and approve RT procedures and work instructions.
Ensure procedures define equipment, exposure techniques, processing, and reporting.
Verify compliance with applicable codes, standards, and specifications.

Safety and Health

Understand radiation hazards associated with radiographic testing.
Learn methods for controlling radiation exposure.
Understand operational and emergency procedures related to radiation safety.
Apply dosimetry, film badge use, and safety practices to protect personnel and facilities.

Who Should Attend

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

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

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 RT Level III success.