Fluorescent Penetrant Inspection

Fluorescent Penetrant Inspection (FPI) is used to detect discontinuities that are open to the surface on non-porous components. Inspection is carried out by cleaning the surface of the part to be inspected, applying a penetrant chemical to the surface, removing excess penetrant, applying a developer, and visually inspecting the resulting surface. American NDT provides industrial systems for FPI that include stations for each of the main inspection steps, including tanks, dryers, powder boxes, inspection booths, and accessories (black lights, spray guns, developer, penetrant, and light meters). These systems are built to the customer's specifications.