Kashiwazaki-Kariwa nuclear power plant

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Kashiwazaki-Kariwa nuclear power plant
Aerial view of the plant
Aerial view of the plant
Kashiwazaki-Kariwa Nuclear Power Plant (Niigata Prefecture)
Kashiwazaki-Kariwa nuclear power plant
Coordinates 37 ° 25 '35 "  N , 138 ° 35' 40"  E Coordinates: 37 ° 25 '35 "  N , 138 ° 35' 40"  E
Country: Japan
Owner: Tōkyō Denryoku
Operator: Tōkyō Denryoku
Project start: 1977
Commercial operation: Sept 18, 1985

Active reactors (gross):

7 (8212 MW)
Energy fed in in 2010: 24,626.91 GWh
Energy fed in since commissioning: 823,438 GWh
Website: The nuclear power plant on the operator's side (Japanese)
Was standing: June 3, 2011
The data source of the respective entries can be found in the documentation .

The Kashiwazaki-Kariwa nuclear power plant ( Japanese 柏 崎 刈 羽 原子 力 発 電 所 , Kashiwazaki Kariwa genshiryoku hatsudensho ) is located partly in Kashiwazaki and partly in Kariwa in Niigata Prefecture . The first reactor was completed in 1985, and six more followed. It is equipped with seven nuclear reactors and a total electrical power of 8,212 MW gross (7965 MW net) the most powerful nuclear power plantof the world. In fact, after three blocks were shut down, the system has only been in partial operation since 2007, and has been completely shut down since 2012. The area of ​​the plant covers 4.2 km² and is located on the coast of the Sea of Japan .


The reactors 1 to 3 were completed by Toshiba from 1985 . The fourth and fifth reactors were supplied by Hitachi . The sixth reactor is from General Electric and Toshiba. The seventh is from General Electric and Hitachi. The fuel elements of the ATRIUM-9 type with a grid spacing of 9 × 9 come from Siemens . The operator is Tōkyō Denryoku (TEPCO).

While in nuclear power plants reactors are usually built in a row and named chronologically according to the order of their completion, in Kashiwazaki-Kariwa this rule was deviated from. After the completion of block 1, construction of the neighboring block 2 and that of block 5 began almost at the same time on another construction site one kilometer away. Then blocks 3 and 4 were built next to the first two and blocks 6 and 7 next to the fifth.


In May 2000, Block 6 had to be temporarily shut down after a 300-fold increase in iodine values ​​was measured in the cooling circuit . In 2002 it emerged that reports by the operator TEPCO had been falsified for 16 years and that inspections had been delayed for reasons of cost. All TEPCO nuclear power plants were then shut down. The inspection was completed on May 16, 2003 and the plant could be started up again.

On July 16, 2007, an earthquake measuring 6.6 on the Richter scale in the region led to a transformer fire in the nuclear power plant , which could be extinguished after about two hours. According to the initial information provided by TEPCO, the earthquake did not release any radioactive material, but this statement was later revised: leakage below the dose limit values. According to current information, large amounts of water have escaped from the reactor, with radioactive material being washed out. 800 liters of oil have also leaked. In addition, an unknown number of containers with radioactively contaminated clothing fell over, with the lids partially opening.

During the earthquake, ground accelerations occurred that exceeded the official extremes of the estimated values ​​for this location by up to two and a half times. "When planning the power plant, we did not assume that an earthquake of this magnitude could occur," said a spokesman for TEPCO three days after the accident. "But after looking at the data on the aftershocks, we understood that the fault runs right under the nuclear power plant."

However, this did not come as a surprise to everyone: In the original official geological investigations, a breakline several kilometers away had been diagnosed, but not under the reactor, but more recent reports had indicated a fault directly under the reactor. A revocation of the operating license demanded by residents for this reason in 2005 was rejected by the Tokyo Supreme Court with reference to official reports: It was not an active rejection.

Due to earthquake damage caused by the Niigata Chūetsu coastal earthquake in 2007 , the entire plant was shut down for 21 months. Even after the nuclear disaster in Fukushima, it has come to a standstill again because it is disputed whether it can continue to operate safely enough.

On March 5, 2009, an employee suffered minor facial injuries in a fire. The fire was extinguished after about 90 minutes. According to the operator, the safety of the reactor was not endangered. The cause of the fire is still unclear.

On the morning of November 19, 2009, there was another incident in which smoke was escaping from the power plant.

On May 6, 2011, the defect of a valve was announced that would be needed in an emergency to pump water into the reactor. At the same time, there were other defects in the system; so should z. B. the devices have been poorly maintained.

Power lines

One of the power lines is part of the three-phase Kita-Iwaki line and is designed as a double line for an operating voltage of 1100  kilovolts (kV) , but is currently operated at 500 kV.

Data of the reactor blocks

The Kashiwazaki-Kariwa nuclear power plant has a total of seven blocks :

Reactor block Reactor type net
start of building Network
of essential operation
switching off
Kashiwazaki Kariwa-1 Boiling water reactor 1,067 MW 1,100 MW 06/05/1980 02/13/1985 September 18, 1985 Long-term standstill since 8/2011,
no restart request
Kashiwazaki Kariwa-2 Boiling water reactor 1,067 MW 1,100 MW 11/18/1985 02/08/1990 09/28/1990 Since 7/2007 in long-term standstill,
no restart request
Kashiwazaki Kariwa-3 Boiling water reactor 1,067 MW 1,100 MW 03/07/1989 December 8, 1992 08/11/1993 Since 7/2007 in long-term standstill,
no restart request
Kashiwazaki Kariwa-4 Boiling water reactor 1,067 MW 1,100 MW 05.03.1990 December 21, 1993 08/11/1994 Since 7/2007 in long-term standstill,
no restart request
Kashiwazaki Kariwa-5 Boiling water reactor 1,067 MW 1,100 MW 06/20/1985 09/12/1989 04/10/1990 Long-term standstill since 1/2012,
no restart request
Kashiwazaki Kariwa-6 Advanced Boiling Water Reactor 1,315 MW 1,356 MW 11/03/1992 01/29/1996 11/07/1996 Long-term standstill since 3/2012
Kashiwazaki Kariwa-7 Advanced Boiling Water Reactor 1,315 MW 1,356 MW 07/01/1993 12/17/1996 07/02/1997 Long-term standstill since 8/2011

See also

Web links

Individual evidence

  1. INSC: Database. In: International Nuclear Safety Center. Archived from the original on May 28, 2010 ; accessed on August 7, 2016 .
  2. INSC: Database. In: International Nuclear Safety Center. Archived from the original on May 28, 2010 ; accessed on August 7, 2016 .
  3. rp-online.de ( Memento of the original from July 15, 2011 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. @1@ 2Template: Webachiv / IABot / www.rp-online.de
  4. Technology Review: Smoke Signals About Japan's Nuclear Program
  5. derbund.ch
  6. ^ Japan, Nuclear Power Reactors - Alphabetic. IAEA (English)
  7. PRIS