Radiographic Testing Level-II Training and Certification SNT-TC-1A
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Program Professional Framework
Radiographic Testing Level-II Training and Certification SNT-TC-1A
Program Overview
At Level II the radiographer moves from performing exposures to setting up techniques, interpreting images and accepting or rejecting work against codes. This programme develops those skills: exposure calculation for varied thicknesses and geometries, technique selection for pipe and plate welds, film and digital image interpretation, discontinuity recognition, and evaluation against widely used acceptance criteria such as ASME Section V and VIII, ASME B31.3, API 1104 and AWS D1.1. It also covers writing technique sheets and guiding Level I staff on Gulf oil, gas and construction projects.
Learning Outcomes
- ✓Calculate exposure time and geometric unsharpness for a given source, thickness and source-to-film distance.
- ✓Select the appropriate technique and IQI for a weld configuration and justify it against the governing code.
- ✓Interpret radiographs to identify porosity, slag, lack of fusion, incomplete penetration and cracks.
- ✓Evaluate indications against acceptance criteria in ASME B31.3, API 1104 or AWS D1.1 and record the decision.
- ✓Write a radiographic technique sheet and instructions that a Level I technician can follow.
- ✓Review digital radiography images for adequate sensitivity, resolution and signal-to-noise ratio.
Target Audience
- Level I radiographers progressing to interpretation duties
- NDT supervisors and crew leaders
- Welding inspectors and QA/QC engineers reviewing radiographs
- Third-party inspection personnel on oil and gas projects
Detailed Program Modules
01Advanced Radiation Physics and Exposure Calculation
- Exposure charts, equivalency factors and half-value layers
- Geometric unsharpness and magnification
- Scatter control and filtration
02Technique Development
- Single-wall, double-wall and panoramic techniques
- Source and IQI selection for code compliance
- Writing technique sheets and instructions for Level I
03Welding and Casting Discontinuities
- Formation of weld and casting defects
- Radiographic appearance of typical discontinuities
- Distinguishing artefacts from relevant indications
04Interpretation and Evaluation
- Viewing conditions and density checks
- Applying ASME, API 1104 and AWS D1.1 acceptance criteria
- Reporting accept and reject decisions with traceability
05Digital Radiography
- CR and DR systems and image quality parameters
- Duplex IQIs, basic spatial resolution and SNR
- Image storage, enhancement limits and data integrity
06Supervision and Radiation Safety Management
- Supervising site crews and verifying Level I work
- Radiation safety audits and incident review
- Preparing written practice inputs under SNT-TC-1A
Training Methodology
Applied Project & Assessment
Applied Project
Participants interpret a set of weld radiographs, record every indication with its classification and code-based decision, and prepare a technique sheet for a new pipe diameter and wall thickness including exposure calculation and IQI selection.
Assessment
Short diagnostic at the start, practical tasks linked to each learning outcome, and evaluation of the applied project against published criteria.