X-RAY NON-DESTRUCTIVE DETECTING METHOD FOR TESTING PIPE WELDINGLINE

摘要

PURPOSE: An X-ray nondestructive testing method of a pipe is provided to irradiate X-rays on a photosensitive film arranged in a second film supporting surface when a second film supporting surface and the rear surface of a welding line are closed by lifting a boom and X-rays are irradiated on the welding line, thereby accurately confirming defects on the welding line. CONSTITUTION: An X-ray nondestructive testing method of a pipe comprises; a step(S1) for preparing a boom with one or more film supporting surfaces on an upper exterior surface arranged along a longitudinal direction; a step(S2) for fixing one fixed end portion of the boom to be lifted and supporting a free end portion area in the other end of the boom at a predetermined charging height; a step(S3) for cancelling supporting the free end portion area after arranging the free end portion area inside a target pipe, a step(S4) for exposing the free end portion area through the target pipe by additionally transferring the target pipe; a step(S5) for positioning a welding line of the pipe in the upper side of the pipe; a step for making the film supporting surface close to the welding line by lifting the free end portion area; and a step for irradiating X-rays on the film supporting surface(S7). [Reference numerals] (AA) Start; (BB) End; (S1) Preparing a boom support; (S2) Supporting the boom support; (S3) Cancelling the supporting; (S4) Exposing a free end; (S5) Adjusting the position of a welding line; (S6,S9) Raising the boom support; (S7) Irradiating X-rays; (S8) Lowering and rotating the boom support;