ULTRASONIC PROBE FOR FLAW INSPECTION OF BOILER TUBE

摘要

PURPOSE:To inspect a crack in the circumferential direction of a boiler tube to which an inspector is inaccessible, in the non-destructive optimum condition from inside the tube. CONSTITUTION:This probe is to inspect a crack of a boiler tube in the circumferential direction from inside of the tube according to the underwater ultrasonic inspection method. This probe is provided with a main body 6 inserted rotatably in the periphery of the axis of the boiler tube, a vertical probe 7 mounted to the main body 6 so as to confirm the shape and position of the welding bead and to measure the thickness of the tube, and two inclined probes 8a, 8b mounted to the main body 6 so as to detect a crack in the circumferential direction of the tube.