Tōkai Nuclear Power Plant

Block 1 and 2

location

Coordinates

36 ° 27 '59 " N , 140 ° 36' 24" E Coordinates: 36 ° 27 '59 " N , 140 ° 36' 24" E

Country:

Japan

Data

Owner:

Japan Atomic Power Company

Operator:

Japan Atomic Power Company

Project start:

1960

Commercial operation:

July 25, 1966

Active reactors (gross):

1 (1100 MW)

Decommissioned reactors (gross):

1 (166 MW)

Energy fed in in 2006:

8,187 GWh

Energy fed in since commissioning:

223,192 GWh

Website:

Tōkai-1: Japanese ( Memento from July 21, 2011 in the Internet Archive ), English
Tōkai-2: Japanese , English

Was standing:

July 25, 2007

The data source of the respective entries can be found in the documentation .

The Tōkai nuclear power plant ( Japanese. 東海原子力発電所 , Tōkai genshi-ryoku hatsuden-sho ) is located around 120 km northeast of Tokyo in the area of the village of Tōkai in the district of Naka in the Ibaraki prefecture . The owner is the Japan Atomic Power Company . The Japan Power Demonstration Reactor , which went into operation in 1963 and was the first nuclear reactor in Asia to be used for commercial power generation, was also located on the site . Nearby is the Tōkai reprocessing plant .

history

The first reactor was built between 1961 and 1965 to meet the rapidly increasing energy requirements of the booming Japanese economy. The first block is a Magnox reactor . This graphite-moderated reactor type only requires natural uranium and is cooled with carbon dioxide.

The boiling water reactors were thought to be immature. A necessary change in the reactor design was the earthquake resistance required for Japan. That initially proved to be a problem as the British wanted to keep the technology a secret.

Japan operated its own research and development (at this time also in close cooperation with the Federal Republic) and then decided to run the second block in Tōkai as a boiling water reactor .

Tōkai-1 reactor

The Tōkai-1 reactor remained the only gas-cooled reactor in Japan. It was shut down on March 31, 1998. The cost of the mining was estimated at $ 190 million. The core's 16,000 uranium blocks should initially decay for 10 years. Then the dismantling began, divided into three phases. In the first phase from 2006 to 2010, the technical equipment was removed. The schedule for phase 2 is from 2010 to 2016 and for phase 3 from 2016 to 2017.

Tōkai block one

Tōkai-2 reactor

On March 11, 2011, the power plant was automatically shut down due to the severe Tōhoku earthquake . On the afternoon of March 13, 2011, the first level of alarm was officially issued. One of two pumps in the cooling system in reactor 2 had failed. Furthermore, two of the three diesel generators had temporarily failed. An external power supply could only be restored on March 13, 2011.

After a temporary restart, the reactor was shut down again on May 21, 2011 "for maintenance work".

Since the Fukushima nuclear disaster, the Japanese have been saving electricity in order to be able to keep as many nuclear reactors switched off as a precaution - further earthquakes or aftershocks are feared or are likely. However, the new Abe government has been operating a policy of restarting for a number of years; several reactors in the country have already been restarted after safety retrofits.

Data of the reactor blocks

The Tōkai nuclear power plant has two blocks :

Reactor block	Reactor type	net power	gross power	start of building	Network synchronization	Commercialization of essential operation	switching off processing
Tōkai-1	Magnox (GCR)	159 MW	166 MW	03/01/1961	11/10/1965	07/25/1966	March 31, 1998
Tōkai-2	Boiling water reactor	1060 MW	1100 MW	10/03/1973	March 13, 1978	11/28/1978	Long-term standstill since 5/2011