Ohi 4 is a 1,180MW nuclear reactor which is located within the premises of Ohi Nuclear Power Plant. It is located in Fukui, Japan. According to GlobalData, who tracks and profiles over 170,000 power plants worldwide, the nuclear reactor is currently generating power and is in active status. The construction on the reactor commenced in June, 1988. The first power from the reactor was achieved in June, 1992. Subsequent to trial runs the reactor finally entered into commercial operation in Feb, 1993. Buy the profile here.

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Ohi 4 is a Generation II nuclear reactor developed by Mitsubishi Heavy Industries, the main contractor for the project.

The 1,180MW reactor is owned and operated by The Kansai Electric Power.

The PWR reactor generates 9,636.22GWh/annum of electricity. It features 193 fuel assemblies in the core of reactor, the place where fission occurs and energy is released. Safety contol rods that are used to control the fission rate in the reactor are 24 in number.

Development status

The reactor construction commenced in June, 1988 and subsequently entered into commercial operation in Feb, 1993.

Contractors involved

Mitsubishi Heavy Industries was selected as the steam turbine supplier for the nuclear reactor. The company provided 1 steam turbine for the project. Mitsubishi Heavy Industries and The Kansai Electric Power were selected as the architect engineers for the reactor. The reactor system was supplied by Mitsubishi Heavy Industries. The reactor vessel has been supplied by Mitsubishi Heavy Industries. The material used for the construction of the vessel is Alloyed Steel (SA 533/SA 508). The civil works were carried out by Kumagai Gumi Co., Ltd., Obayashi Corporation and Takenaka.

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About Mitsubishi Heavy Industries

Mitsubishi Heavy Industries Ltd (MHI) manufactures a diverse range of heavy machinery. Its products and services include power plants, chemical plants, environmental equipment, steel structures, industrial and general machinery, shipbuilding, aircraft, space systems and air-conditioning systems. MHI provides social infrastructure solutions in the fields of energy, including thermal, nuclear, renewable energy and the environment, including chemical plants. The company also provides modern transportation systems and services for land, sea, and air applications. It provides integrated defense systems for land, sea, air and space applications and related equipment and services. The company operates in North America, Latin America, Asia, Europe, the Middle East, Africa and Oceania. MHI is headquartered in Chiyoda-Ku, Tokyo, Japan.

This content was updated on 22 April 2024

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GlobalData, the leading provider of industry intelligence, provided the underlying research used to produce this article.

This information is drawn from GlobalData’s Power Intelligence Center, which provides detailed profiles of over 170,000 active, planned and under construction power plants worldwide from announcement through to operation across all technologies and countries worldwide.