Radiographic Testing is a well established NDT method which uses Gamma or X rays to produce the image of a material onto film. Radiography provides a quality, cost effective, permanent record with high volume capabilities due to simple operation and portability. Applications include wall loss detection (profile radiography) and sizing in pipes and plate through to manufacturing defects in welds, forgings castings etc

However, the major demerit is the inherent risks associated with the use of radioactive isotopes and the need to establish and manage a controlled area during the process. Commonly used radioactive isotopes include Iridium 192, Cobalt 60 and Selenium 75.