Hitachi, Ltd.

Yuichi Higashikawa

Setsuo Arita

Tetsuo Ito

Mitsuru Kudo

Yukiharu Ohga

Hideyuki Sato

Fumio Murata

Yuuzi Yamasawa

Akira Nishimura

Kanji Kato

Yoshiyuki Miyamoto

Tatsuo Hayashi

Yukihisa Fukasawa

Takaharu Fukuzaki

Koji Kurokawa

Mitsuo Kinoshita

Kazuo Asami

In an apparatus for operating and monitoring a plant, a manipulating device provides the plant with manipulation signals for operating the plant. In response to information supplied from the plant and a manipulating signal of the manipulating device, a first display data producing device produces first display data needed for the operation of the plant changing every moment. On the basis of data supplied from the first display data producing device, a first display device displays information relating to the operation of the plant. In response to information supplied from the plant and a manipulating signal of the manipulating device, a second display data producing device produces data needed for monitoring the plant. On the basis of data supplied from the second display data producing device, a second display device displays information relating to the monitoring of the plant on a larger display screen than that of the first display device. Information displayed by the first display device and information displayed by the second display device complement each other and make it possible to accurately operate and monitor the plant.

Plant operating and monitoring apparatus

This invention relates to an automation system for nuclear power plants. This system comprises operation plan making means, supervisory control means, and control means for controlling controlled objects. The operation plan making means makes a new operation plan to restore a normal operating condition which existed before the plant condition deviated from the normal operation range. The supervisory control means outputs control commands according to an operation plan under abnormal condition when the plant operating condition deviates from the normal operation range. Furthermore, the supervisory control means outputs control commands according a new operation plan prepared by the operation plan making means after an operation according to an operation plan under abnormal condition has been finished. The control means for controlling controlled objects controls the controlled objects according to control commands output from the supervisory control means.

Automation system for nuclear power plants

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Hitachi, Japan

Yuichi Higashikawa