Development of fluorescent liquid penetrant test equipment

Yoshinaka, Kazuyuki ; Otsuka, Masahiro*; Hoshino, Masato; Kikuchi, Kenji; Kawata, Tsuyoshi; Taki, Kiyotaka

The fluorescent liquid penetrant test equipment, for welding part in the evaporator for phosphate liquid waste generated by solvent waste treatment at Tokai reprocessing plant, was developed. It is composed of CCD camera and UV light for observation, sprinkling nozzles for fluorescent liquid, washing water and drying air, and positioning mechanism, which could be arranged position of the equipment to inspection object by 3 axes operation, insert length, bending angle and turn angle. Also, the equipment could be inserted by way of the nozzle, which inside diameter is 60 mm, into the evaporator for inspection. It was confirmed that it could be observed the standard faults, which was defined in JIS, by the equipment. Then, fluorescent liquid penetrant test for the evaporator, which has treated phosphate liquid waste for 18 years, and which heating temperature was about 105 centigrade degree, was done. As the result of the test, it was not observed fault in the evaporator.