Industrial radiography is a long established effective Non Destructive Testing (NDT) method which is a very versatile diagnostic tool.
Radiographic images are formed by passing ionising gamma or X radiation through the piece to be examined on to a radiographic film on the remote side of the test piece. A contrast greyscale image is formed as a result of attenuating factors in the material such as thickness changes caused by internal defects.
Radiation sources commonly used are Iridium 192, Selenium 75 and X-Rays.
Applications
- Most materials
- Castings
- Welded joints
- Forged components
- Corrosion Under Insulation (CUI) in piping using profile technique
ii. Gamma radiograph of 6" pipe weld showing lack of weld penetration
