Patent Number: 
Section: claims

1. An underwater remote surface inspection method for a reactor constituting member comprising the steps of:carrying a replica picking head having a replica agent supply region provided with an opening, into a reactor vessel filled with water;pressing said replica picking head against a surface of a reactor constituting member in a state where said opening faces the surface of the reactor constituting member disposed in said reactor vessel;allowing a replica agent to contact with the surface of said reactor constituting member by supplying said replica agent into said replica agent supply region inside said pressed replica picking head; andapplying an ultrasonic wave to the replica agent inside said replica picking head,wherein a frequency of said ultrasonic wave applied to said replica agent is modulated, andwherein the frequency of said ultrasonic wave applied to said replica agent is modulated during the applying thereof. 2. An underwater remote surface inspection method for a reactor constituting member comprising the steps of:carrying a replica picking head, having an ultrasonic vibration plate contacting with an ultrasonic vibrator, connected to a replica agent supply device, and having a replica agent supply region provided with an opening, into a reactor vessel filled with water;pressing said replica picking head against a surface of a reactor constituting member in a state where said opening faces said surface of said reactor constituting member disposed in the reactor vessel;allowing a replica agent to contact with said surface of said reactor constituting member by supplying said replica agent from said replica agent supply device into said replica agent supply region inside said pressed replica picking head; andtransmitting an ultrasonic wave from said ultrasonic vibration plate to said replica agent inside said replica picking head,wherein a frequency of said ultrasonic wave applied to said replica agent is modulated, andwherein the frequency of said ultrasonic wave applied to said replica agent is modulated during the transmitting thereof. 3. An underwater remote surface inspection method for a reactor constituting member comprising the steps of:disposing an underwater remote surface inspection apparatus inside a reactor vessel filled with water so that a second opening faces a surface of a reactor constituting member disposed in the reactor vessel, said underwater remote surface inspection apparatus including a replica picking head having an ultrasonic vibration plate contacting with an ultrasonic vibrator, connected to a replica agent supply device, and having a replica agent supply region provided with a first opening, a moving device moving said replica picking head, and an elongate housing attached with the moving device, accommodating the replica picking head, and having said second opening extending in an axial direction;moving said replica picking head up to a position of an inspection region of said reactor constituting member along said housing by using said moving device;pressing said replica picking head moved up to the position of said inspection region against a surface of said reactor constituting member in a state where said replica picking head is allowed to protrude from said second opening by said moving device and said first opening faces the surface of said reactor constituting member;allowing a replica agent to contact with the surface of said reactor constituting member by supplying the replica agent from said replica agent supply device into said replica agent supply region inside said pressed replica picking head; andtransmitting an ultrasonic wave from said ultrasonic vibration plate to said replica agent inside said replica picking head,wherein a frequency of said ultrasonic wave applied to said replica agent is modulated, andwherein the frequency of said ultrasonic wave applied to said replica agent is modulated during the transmitting thereof.