REDUCED-THICKNESS INSPECTION DEVICE FOR PIPING WITH THERMAL INSULATION MATERIAL USING RADIOACTIVE ISOTOPE AS AUTHENTICATION EQUIPMENT WITH DISPLAY AND REDUCED-THICKNESS INSPECTION METHOD

摘要

PROBLEM TO BE SOLVED: To provide a reduced-thickness inspection device of piping with thermal insulation materials using a radioactive isotope as authentication equipment with display capable of finely specifying and detecting the reduced-thickness place of piping and a reduced-thickness inspection method.;SOLUTION: The reduced-thickness inspection device of piping 50 with thermal insulation materials constituted of an outer casing 53, a thermal insulation material 52 and a pipe material 51 in this order from the outside includes: a first frame 15 having a plurality of rotary rollers 20 and 21 oppositely arranged with the piping 50 with thermal insulation materials sandwiched therebetween, which is mounted on the piping 50 with thermal insulation materials so as to be rotatable in a circumferential direction by allowing the rollers 20 and 21 to abut to the outer peripheral surface of the outer casing 53; a second frame 16 mounted on the first frame 15 so as to slide in a direction orthogonal to the axial center line of the piping 50 with thermal insulation materials, the second frame 16 being constituted such that a radiation source 13 and a radiation detector 14 are oppositely arranged with the piping 50 with thermal insulation materials sandwiched therebetween; and a thickness measurement section 30 for measuring the reduced-thickness of the piping 51 from transmitted radiation amounts to be emitted from the radiation source 13, and to be obtained by the radiation detector 14.;COPYRIGHT: (C)2014,JPO&INPIT