Nuclear power plant Ōi

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Nuclear power plant Ōi
Units 3 and 4 of the nuclear power plant
Units 3 and 4 of the nuclear power plant
location
Ōi Nuclear Power Plant (Fukui Prefecture)
Nuclear power plant Ōi
Coordinates 35 ° 32 '26 "  N , 135 ° 39' 7"  E Coordinates: 35 ° 32 '26 "  N , 135 ° 39' 7"  E
Country: Japan
Data
Owner: Kansai Denryoku
Operator: Kansai Denryoku
Project start: 1970
Commercial operation: March 27, 1979

Active reactors (gross):

2 (2360 MW)

Decommissioned reactors (gross):

2 (2350 MW)
Energy fed in in 2006: 32,808 GWh
Energy fed in since commissioning: 618,710 GWh
Website: The nuclear power plant on the operator's side (Japanese)
Was standing: July 25, 2007
The data source of the respective entries can be found in the documentation .
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The Ōi nuclear power plant ( Japanese 大 飯 発 電 所 , Ōi hatsudensho ) is located in Ōi in Ōi county in Fukui prefecture . The facility is owned by the Kansai Denryoku . It is also known under the alternative spellings Ohi or Ooi .

There are four pressurized water reactors on the site. Reactors 1 and 2 were supplied by Westinghouse , 3 and 4 by Mitsubishi . A fifth reactor block with an output of 1200 MW was planned.

history

On December 16, 2011, Unit 2, the last still producing reactor of the Ōi nuclear power plant, was shut down for maintenance work. On May 5, 2012, the last nuclear reactor still running in Japan went offline as planned, reactor 3 in the Tomari nuclear power plant .

In view of possible shortages in the electricity supply in the summer, the government granted permission on June 16, 2012 to restart reactors 3 and 4 of the Ōi nuclear power plant. At the beginning of July 2012, reactor 3 went into operation despite protests from the population.

In December 2012, it became known that the system may be on an active crevice.

On May 21, 2014, the Fukui District Court ruled that reactors 3 and 4 could not be restarted. The court argued that the basic right to life of many people could not be weighed against the power supply and price arguments. The safety guaranteed by the operator up to 1.8 times the strongest foreseeable earthquake of 700 Gal was not recognized as sufficient, since stronger earthquakes cannot be scientifically ruled out. Reference was made to the Iwate earthquake in 2008 , in which a maximum ground acceleration of 4022 Gal was measured. Kansai Denryoku appealed the verdict on May 22, 2014. The government of Japan under Prime Minister Shinzō Abe made it clear that it would continue to campaign for the restart of the Japanese nuclear reactors despite the judgment. On December 22, 2017, Kansai Electric announced that it would shut down reactors 1 and 2.

Data of the reactor blocks

The Ōi nuclear power plant has four blocks :

Reactor block Reactor type net
power
gross
power
start of building Network
synchronization
Commercialization
of essential operation
switching off
processing
Ōi-1 Pressurized water reactor 1120 MW 1175 MW 10/26/1972 December 23, 1977 03/27/1979 12/22/2017
Ōi-2 Pressurized water reactor 1120 MW 1175 MW December 8th, 1972 10/11/1978 December 05, 1979 12/22/2017
Ōi-3 Pressurized water reactor 1127 MW 1180 MW 10/03/1987 06/07/1991 12/18/1991 (Planned for 2031)
Ōi-4 Pressurized water reactor 1127 MW 1180 MW 06/13/1988 06/19/1992 02/02/1993 (Planned for 2033)

Accidents

On May 5, 2004 it was found that boric acid was leaking from a valve on the reactor. On December 22nd, 2005 a hurricane caused problems with the power lines. The power plant was taken off the grid as a precaution.

On March 22, 2006, there was a fire in the non-nuclear part of the facility, and two workers were inhaled smoke.

On July 16, 2011 - about four months after the Fukushima nuclear disaster  - reactor block 1 of NPP Ōi was shut down. The reason is a pressure loss in a boric acid tank, which is available for emergency situations, announced the operator. It is still unclear when the reactor can go back online. After this shutdown, only 18 of the 54 commercial Japanese nuclear reactors were still in operation.

See also

Web links

Individual evidence

  1. Japan. In: icjt.org. Archived from the original on August 5, 2012 ; accessed on August 7, 2016 .
  2. table (as of February 20, 2012)
  3. ^ Matthias Beermann, Helmut Michelis: Japan's atomic withdrawal . In: Rheinische Post , March 28, 2012, p. A2
  4. Last reactor from the network. Japan is turning off nuclear power ( Memento from May 6, 2012 in the Internet Archive ). In: Financial Times Deutschland , May 5, 2012; Retrieved May 5, 2012.
  5. Atom: Japan drives nuclear reactors up again at focus.de, June 16, 2012 (accessed on June 16, 2012)
  6. Energy policy: Japan is starting up the nuclear reactor for the first time since Fukushima . Zeit Online , July 1, 2012; Retrieved July 2, 2012.
  7. Analysis: Court ban on restart of Oi plant puts nuclear safety screening on trial. Archived from the original on March 4, 2016 ; accessed on August 7, 2016 .
  8. http://www.world-nuclear-news.org/WR-Kansai-applies-to-decommission-Ohi-1-and-2-0103184.html
  9. Power Reactor Information System of the IAEA : Japan: Nuclear Power Reactors - Alphabetic (English)
  10. ^ Citizen Nuclear Information Center
  11. BBC
  12. ^ Nuclear Power Plants Operational Status
  13. Another nuclear reactor in Japan is shut down . Zeit Online , July 16, 2011