NDT Level III Personnel Qualification Certification for RT - Radiographic Testing Outline
About Radiographic Testing (RT)
Industrial radiography involves exposing a test object to penetrating radiation so that the radiation passes through the object being inspected and a recording medium placed against the opposite side of that object. For thinner or less dense materials such as aluminum, electrically generated x-radiation (X-rays) are commonly used, and for thicker or denser materials, gamma radiation is generally used.
This examination is 4 hours in length, having 135 questions of equal value.
- Principles and Theory
- Electrically generated sources
- Particulate radiation sources
- Radiation detectors
- Imaging considerations
- Film processing
- Viewing of radiographs
- Judging radiographic quality
- Exposure calculations
- Radiographic techniques
- Interpretation and Evaluation
- Safety and Health
- Exposure hazards
- Methods of controlling radiation exposure
- Operational and emergency procedures
- Dosimetry and Film Badges
The number in parentheses following each reference is the ASNT catalog number.
- Level III Study Guide: Radiographic Testing (2259)
- NDT Handbook: Volume 4, Radiographic Testing (144, 144CD, 144WCD)
- Supplement to Recommended Practice No. SNT-TC-1A (Q&A Book) - Radiographic Testing Method (2026)
- Working Safety in Radiography (232)
ASNT offers an RT Refresher Course based on the above topical outline.