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

1. Gamma radiograph of 2" pipe weld with gas inclusions
2. Gamma radiograph of 6" pipe weld showing lack of weld penetration

X radiography of city natural gas transmission line

Pipe lengths strung out before fit-up and welding on overland gas transmission line