This International Standard specifies the basic practices and conditions that are to be observed for thermal neutronradiography of materials and components for flaw detection. It is concerned with techniques using photosensitive film as arecording medium. However, it recognizes that alternative methods of imaging may be used more widely in the future. Thescope includes neutron production and collimation methods, converter screen selection, radiographic film, neutronradiographic inspection techniques and the type of material to be inspected. This practice is generally applicable to specificmaterial combinations, processes and techniques.