| 摘要 |
PROBLEM TO BE SOLVED: To rapidly acquire measuring data necessary for calculating the cross section of piping. SOLUTION: An annular track 1 is installed on the piping 3, joined at a welded part 2 and a circumferential movement device 6, is installed on the track 1 so as to be freely moved around the piping 3. A measuring instrument moving part 19 is moved in a piping axis direction along a shaft 14 from the circumferential movement device 6, and on the way of this movement, the displacement 23 and mounted on the measuring instrument moving part 19 and the vertical ultrasonic probe mounted on the measuring instrument moving part 19 as an ultrasonic probe 22 are used to measure of the outer surface of the piping 3 and the wall thickness (plate thickness) of the piping 3. The cross-sectional shape of the piping 3 is displayed by using the respective measuring results, and the vertical ultrasonic probe is subsequently replaced with an oblique angle ultrasonic probe to perform an ultrasonic flaw detection test within the previous measuring range. The test result is displayed so as to be superimposed on the display of the cross-sectional shape of the piping 3. COPYRIGHT: (C)2007,JPO&INPIT
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