Radiograph examination manner of tube circumferential weld and jig null for radiograph examination

摘要

PURPOSE: To provide a radiographic testing method for a welded part of a tube circumference and a radiographic testing jig by which a clear radiography can be obtained over the total range of a welded part with a simple operation and the quality of the welded part can accurately be judged whether it is normal or defective. ;CONSTITUTION: A radiographic inspection jig 10 provided with a cylindrical body 12 freely inserting into two pieces of tubes 42, 44, and two annular X-ray shielding plates 14, 16 attached by separating a definite interval on an outer circumferential surface of this cylindrical body 12 are prepared, radiation films 26a-26d are arranged to be mutually opposed to the welded part 40 and the radiography of this welded part 40 is photographed thereafter, the radiation films 24a-24d are arranged to be mutually opposed to the welded part 40, and the radiography of the welded part 40 is photographed from the position different from the position where the radiation films 26a-26d are photographed.;COPYRIGHT: (C)1994,JPO&Japio