X-ray Piping Diagnostic System

A diagnostic system was developed to cope with aged piping in a building. Working space and time is limited in a building, so X-rays were selected as the medium of inspection, and film was chosen as a detector. The method of calculating the thickness from the density of the film was studied, and a method to compare piping to be inspected with standard pipe and to determine thickness using an approximate curve was developed. The system was used for several hundred measurements. Error was found to be less than 10%.