Radiography Testing (RT)
Detect Discontinuities within the Internal Structure of Assets and Welds
Conventional RT is a nondestructive examination (NDE) method that uses X-ray and gamma ray for detecting internal imperfections, measuring wall thickness and detection of corrosion. With RT, the material is exposed to a homogenous ray from a radioactive isotope or an X-ray tube while a negative film is positioned behind the material to be examined. After development of the film, thickness and density differences (material imperfections) will show as blackness. Acceptance criteria define whether or not the indication is non-acceptable (a defect or flaw or metal loss). RT is often used to inspect pressure vessels, valves,tanks, pipelines ,piping etc ..