Mitsubishi Jukogyo Kabushiki Kaisha

Dainichi-nippon Cables, Ltd.

Junji Nakayama

Atsushi Utsumi

Yoshiaki Kondo

Shoichi Hamada

Kyoichi Yoshioka

Takeo Oomichi

Toshiyuki Nakajima

Tomio Aoyama

Takao Kuroiwa

Kiyoshi Tachibana

Kohei Morisaki

Kazuto Sawaragi

Mitsushi Ideo

Kyoichi Aizawa

Sunao Oshibe

Yukio Hukagawa

Masatoshi Takamatsu

A underwater mobile type inspection system is disclosed wherein said system comprises a multi-articulated manipulator with a probe attached at its tip end thereof. A pivot base supports the proximal end of the manipulator for free rotation and is provided with a propulsion device. An anchoring base is attached to the bottom of said pivot base via a pivot driving mechanism. An adhesion device and a mobile vehicle device are provided, both of which are mounted on the outer periphery of said anchoring base. The inspection system may be applicable to a defect finding operation, other inspecting procedures, cleaning and recovery operations of foreign materials in large-sized vessels, such as nuclear reactor pressure vessels, water pools and storage tanks etc.

Underwater mobile type inspection system

A fiber scope of the side-viewing type includes an image guide and two light guides disposed on both sides thereof in an objective part. The fiber scope is suitable for the observation of the surface of long articles assembled with narrow gaps therebetween as in an assembly of nuclear fuel rods in a nuclear reactor and a wide field of view can be secured even if an object to be observed stands within a point-blank range of an objective part. Also a plurality of long articles can be simultaneously observed by the fiber scope or the observation can be carried out while moving the fiber scope in the scanning direction. If the fiber scope is used in a radioactive environment, highly radiation resistant optical fibers are used.

Fiber scope

Growing community of inventors

Hyogo, Japan

Junji Nakayama