In order to ensure welded joints are defect free and have a strength integrity at least as strong as the parent metals being joined, welded joints must be inspected and tested.
Inspection during and after welding, should be done by inspectors, but there is a significant amount the welder should do as well, provided they know what to look for and the different defects found in welds (as well as what causes them).
This course is broken down into 4 Modules:
5-1 Defects in Welds
5-2 Visual Examination
5-3 Non-Destructive Testing (NDT)
5-4 Destructive Testing
The modules should be completed in the order shown