| 摘要 |
PROBLEM TO BE SOLVED: To provide a device capable of inspecting with automatic and remote operation the welding part of the body part of a reactor pressure vessel and body flange and a body flange sealing surface. SOLUTION: On a device inspecting the welding part of body flange 2 of a reactor pressure vessel 1 and body 1a of a pressure vessel and a flange sealing surface, a moving stage 13 sitting on the inside surface, flange seal surface and the upper surface of the body flange 2 is provided. On the side of the moving stage 13, a cylindrical magnetic wheel 14 sticking on and rotating along the inside surface of the reactor pressure vessel 1 is provided. In the upper part of the moving stage 13, a cone shape guide roller 15 rotating along the upper surface of the body flange 2 is provided. On the moving stage 13, and ultrasonic probe inspecting the welding part of the body flange 2 and a camera inspecting the body flange sealing surface are provided. |
