Tōkai Nuclear Power Plant
| Tōkai Nuclear Power Plant | |
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Tōkai Nuclear Power Plant
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 Location of Tōkai Nuclear Power Plant in Japan
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| Country | Japan |
| Coordinates | 36°27′59″N 140°36′24″E / 36.46639°N 140.60667°ECoordinates: 36°27′59″N 140°36′24″E / 36.46639°N 140.60667°E |
| Construction began | March 1, 1961 |
| Commission date | July 25, 1966 |
| Operator(s) | Japan Atomic Power Company |
| Power generation | |
| Units operational | 1 × 1100 MW |
| Units decommissioned | 1 × 166 MW |
| Nameplate capacity | 1100 MW |
| Capacity factor | 0% |
| 2012 generation | 0 GW·h |
The Tōkai Nuclear Power Plant (東海原子力発電所 Tōkai genshi-ryoku hatsuden-sho?, Tōkai NPP) was Japan's first commercial nuclear power plant. It was built in the early 1960s to the British Magnox design, and generated power from 1966 until it was decommissioned in 1998. A second nuclear plant, built at the site in the 1970s, was the first in Japan to produce over 1000 MW of electricity.
Following the 2011 Tōhoku earthquake and tsunami the number 2 reactor was shut down automatically. It has been suggested that the reactor should not be restarted and should be decommissioned.
The site is located in Tokai in the Naka District in Ibaraki Prefecture, Japan and is operated by the Japan Atomic Power Company. The total site area amounts to 0.76 km2 (188 acres) with 0.33 km2, or 43% of it, being green area that the company is working to preserve.
This reactor was built based on British developed Magnox technology. Unit 1 will be the first nuclear reactor to be decommissioned in Japan. The experience in decommissioning this plant is expected to be of use in the future when more Japanese plants are decommissioned. Below is a brief time-line of the process.
This Boiling Water Reactor was the first nuclear reactor built in Japan to produce over 1,000 MW of electricity. By some formalities in the paperwork, the unit is technically separate from the rest of the nuclear facilities at Tokai-mura, but it is managed with the rest of them and even shares the same front gate.
Two nuclear incidents happened in 1997 & 1999:
Following the 2011 Tōhoku earthquake and tsunami, the Number 2 reactor was one of eleven nuclear reactors nationwide to be shut down automatically. It was reported on 14 March that a cooling system pump for the Number 2 reactor had stopped working. Japan Atomic Power Company stated that there was a second operational pump and that cooling was working, but that two of three diesel generators used to power the cooling system were out of order.
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