Underwater remote surface inspection method and apparatus for reactor constituting member

摘要

In an underwater remote surface inspection method for a reactor constituting member, in order to improve the precision of an operation of inspecting a surface shape of the reactor constituting member, an underwater remote surface inspection apparatus (1) includes a replica picking head (7), an ultrasonic vibrator (11), and a replica agent cartridge (20). The replica picking head (7) is pressed against a surface of core internal structure (40) as an inspection target. A replica agent is supplied from the replica agent cartridge (20) into the replica agent supply region (38) formed inside the replica picking head (7) and contacting with the surface of the core internal structure (40). After the operation of supplying the replica agent ends, an ultrasonic wave (39) is transmitted from an ultrasonic vibrator (11) to the replica agent inside the replica agent supply region (38). Accordingly, gas bubbles or liquid bubbles existing inside the replica agent supply region (38) rise up so as to be discharged to the outside of the replica picking head (7) through an air extracting hole (8). As a result, the gas bubbles or the liquid bubbles do not remain in the surface of the replica agent contacting with the surface of the core internal structure (40).