Onagawa Nuclear Power Plant
| Onagawa Nuclear Power Plant | |
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The Onagawa Nuclear Power Plant
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 Location of Onagawa Nuclear Power Plant in Japan
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| Country | Japan |
| Coordinates | 38°24′04″N 141°29′59″E / 38.40111°N 141.49972°ECoordinates: 38°24′04″N 141°29′59″E / 38.40111°N 141.49972°E |
| Construction began | July 8, 1980 |
| Commission date | June 1, 1984 |
| Operator(s) | Tohoku Electric Power Company |
| Power generation | |
| Units operational | 1 x 524 MW 2 x 825 MW |
| Average generation | 5,283 GWh |
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Website www |
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The Onagawa Nuclear Power Plant (女川原子力発電所 Onagawa (
pronunciation) genshiryoku hatsudensho?, Onagawa NPP) is a nuclear power plant located on a 1,730,000 m2 (432 acres) site in Onagawa in the Oshika District and Ishinomaki city, Miyagi Prefecture, Japan. It is managed by the Tohoku Electric Power Company. It was the most quickly constructed nuclear power plant in the world.
The Onagawa-3 unit was used as a prototype for the Higashidori Nuclear Power Plant.
The plant conforms fully to ISO 14001, a set of international environmental management standards. The plant's waste heat water leaves 7 degrees Celsius higher than it came in and is released 10 meters under the surface of the water, in order to reduce adverse effects on the environment All the reactors were constructed by Toshiba.
According to Reuters the Onagawa nuclear power plant was the closest nuclear power plant to the March 2011 earthquake epicenter. All three reactors at the power plant successfully withstood the 2011 Tōhoku earthquake and tsunami, demonstrating the ability of a well designed nuclear facility to withstand even one of the most powerful of megathrust earthquakes and tsunamis ever recorded and to shut down safely, as designed, without incident.
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