FLAW DETECTION METHOD IN EXISTING APPARATUS

摘要

PROBLEM TO BE SOLVED: To provide a flaw detection method where a flaw in a conventional existing installed apparatus can be detected at a site and nondestructively, the flaw can be detected and analyzed at the site and the generation position of a crack or the like can be specified, when the existing apparatus is situated in a position in which the flaw cannot be detected easily, such as, e.g. a pipe is hard to pull out. SOLUTION: The transmitted X-rays of a part to be inspected are enlarged and image-formed on a high-sensitivity imaging plate by using X-rays whose focus size is severalμms at the existing site, and the imaging plate is laser- scanned so as to be changed into a sharp digital image, so that an analytical image which can be visually recognized easily at the site can be obtained.