methods for radiographic inspection of welded joints of a pipe on a roehrenfoermigen plate and device for implementation of the procedure.

摘要

In the method for the radiographic inspection of the bead 4 welding the end of a tube 3 of the tube bundle to the outer face of a tube plate, there is arranged above the welding bead a special radiographic plate protected from the light by washers made of plastic transparent to radioactive radiation. A lead plate is arranged behind this plate. A radioactive source of a size of the order of a millimetre is introduced along the axis of the tube into an introduction and ejection tube. The radiation from the source is allowed to imprint the films of the plate. The introduction and ejection tube is removed together with the source and the films are developed. IMAGE