Hitachi, Ltd.

Masayoshi Sasaki

Masanori Suzuki

Yoshiaki Ichikawa

Tomiharu Yoshida

Hiroshi Kamimura

Sakae Sugiyama

Makoto Senoh

Fumio Tomizawa

Yoshimi Ishii

Sen Sugiyama

Remote manipulation method and system of the master-slave type in which an operation procedure plan is prepared for defining each of a sequence of pieces of work as being performed by manual operation or automatic operation at least on the basis of information on the level of skill of a human operator and the sequence of pieces of work is performed in accordance with the plan, whereby work can be done efficiently with human operator's skill taken into consideration.

Method and apparatus for master-slave manipulation supplemented by

A control rod drive attaching and detaching device and a control rod drive handling device are mounted on a revolving device to be movable independently from each other. The control rod drive attaching and detaching device includes bolt handling means for loosening and tightening bolts for fastening a control rod drive to a pressure vessel of a nuclear reactor, coolant splash preventing means for disposing of coolant which flows from the control rod drive when the latter is detached from the pressure vessel, and uncoupling means for uncoupling a control rod from the control rod drive. The control rod drive handling device includes a column pivotally mounted on a carriage, a cart removably mounted on the column, and means for moving the column to a horizontal position. Each control rod drive mounted to the pressure vessel of the nuclear reactor is detached from the pressure vessel by the control rod attaching and detaching device and transferred to the cart of the control rod drive handling device. The column is moved to a horizontal position, and the cart with the control rod drive supported thereon is removed from the column.

Method of and apparatus for replacing control rod drive

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Hitachi, Japan

Masayoshi Sasaki