Dukovany nuclear power plant

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Dukovany nuclear power plant
Dukovany nuclear power plant
Dukovany nuclear power plant
Nuclear power plant Dukovany (Czech Republic)
Dukovany nuclear power plant
Coordinates 49 ° 5 '6 "  N , 16 ° 8' 56"  E Coordinates: 49 ° 5 '6 "  N , 16 ° 8' 56"  E
Country: Czech Republic
Owner: ČEZ, as
Operator: ČEZ, as
Project start: 1970

Active reactors (gross):

4 (1824 MW)
Energy fed in in 2010: 13,288.4 GWh
Energy fed in since commissioning: 301,616.77 GWh
Was standing: May 17, 2011
The data source of the respective entries can be found in the documentation .

The Czech nuclear power plant Dukovany (Czech Jaderná elektrárna Dukovany , also JEDU for short, rarely EDU) is located on the territory of the municipalities of Dukovany and Rouchovany in South Moravia . It is located about 35 kilometers southwest of Brno and 100 kilometers north of Vienna .

It was commissioned between 1985 and 1987 and consists of four reactor blocks with a total output of 1792  MW . The company ČEZ is the owner and operator of the nuclear power plant .


The nuclear power plant

From 1976 the villages of Heřmanice , Lipňany and Skryje were evacuated. Construction of the first two units in a twin arrangement began on January 1, 1979, and construction of units 3 and 4 began on March 1, 1979. On May 3, 1985, the first reactor unit was put into operation. Unit 2 went into operation on March 21, 1986. Unit 3 went into operation on December 20 of the same year. In the 4th block, the first synchronization with the power grid was carried out on July 19, 1987 after more than eight years of construction.

The nuclear power plant has a cooling water requirement of 83 cubic meters per hour, which it draws from the Dalešice and Mohelno reservoirs of the Jihlava .

According to the current status, the shutdown of the first reactor block is Template: future / in 5 yearsplanned for 2025 , as the planned duration of 40 years will then be reached.

In February 2012, the Czech Industry and Trade Minister Martin Kuba announced the prospect of building another reactor in Dukovany. In April 2020, after several years of preparatory work, a contract was signed with ČEZ for the development of a single 1200 MWe unit; The aim is to realize it in 2029 and to complete it in 2036. The cost of construction is estimated at 10 to 12 billion euros. It is currently assumed that the energy company CEZ will take over the financing of the new reactors.


The first block of the nuclear power plant

The four reactors are Russian-type pressurized water reactors ( WWER ) of the 440 series. Version 213 of the WWER-440 is the second generation of nuclear reactors, developed by the Soviet Union between 1970 and 1980.

The power plant has no containment and is of the same Soviet type as the Bohunice  V2 nuclear power plant in Slovakia or units 5 to 8 of the Greifswald nuclear power plant, which was closed in 1990 .

The lack of containment offers less protection for the system against external influences - such as B. Destruction by a plane crash - as well as against escaping radioactivity in serious accidents in the reactor room. Furthermore, the installation of the blocks in two twin systems with a common central room for two reactors each and the amalgamation of numerous safety and service facilities is also viewed as a risk, since the other reactor cannot be fully shielded in the event of an accident.


In early February 2016, both the operator and the Czech nuclear supervisory authority filed a criminal complaint after the latter discovered that all X-ray images of the welds had been systematically manipulated. According to the Czech nuclear regulatory authority, the seams in the primary circuit are not affected by this affair. Block 2 is currently (as of February 2016) still unscheduled deactivated. On November 25, 2018, reactor block 1 was shut down after a leaky pipe was suspected in the area of ​​the steam generator.

Mention in the media

Dukovany is also the sideline of the Austrian film Der Erste Tag, produced in 2008 .

Data of the reactor blocks

The Dukovany nuclear power plant has four blocks :

Reactor block Reactor type net
start of building Network
of essential operation
switching off
Dukovany-1 WWER-440/213 471 MW 505 MW 01/01/1979 02/24/1985 05/03/1985 (Planned for 2025)Template: future / in 5 years
Dukovany-2 WWER-440/213 471 MW 505 MW 01/01/1979 01/30/1986 03/21/1986 (Planned for 2026)Template: future / in 5 years
Dukovany-3 WWER-440/213 471 MW 505 MW 03/01/1979 11/14/1986 December 20, 1986 (Planned for 2027)Template: future / in 5 years
Dukovany-4 WWER-440/213 471 MW 505 MW 03/01/1979 06/11/1987 07/19/1987 (Planned for 2028)Template: future / in 5 years

Integration into the power grid

The electricity generated in the blocks is sent via high-voltage lines to the Slavětice collective substation, where the load distributor is located. A 380 kV line also leads from the Slavětice substation to Austria to the Dürnrohr substation .

See also

Web links

Commons : Dukovany nuclear power plant  - collection of pictures, videos and audio files

Individual evidence

  1. press release. ( Memento of the original from September 23, 2015 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. FEDERATION @1@ 2Template: Webachiv / IABot / www.bund-naturschutz.de
  2. New block in the Dukovany nuclear power plant in prospect . In: Der Standard , February 13, 2012, accessed February 13, 2012
  3. Czech government approves agreements with CEZ on new Dukovany unit. April 30, 2020, accessed April 30, 2020 .
  4. Aleksandra Fedorska: CZECH REPUBLIC RELIES ON NUCLEAR FORCE AGAINST ALL RESISTANCE. In: energate.de. November 1, 2019, accessed July 26, 2020 .
  5. sloppiness with a system? Nuclear regulators criticize lax inspection of welds in nuclear power plants . radio.cz/de
  6. Czech Dukovany Nuclear Power Plant: Unscheduled reactors shut down for inspection
  7. ^ Breakdown in the Dukovany nuclear power plant in the Czech Republic Westfälische Rundschau , November 26, 2018
  8. Power Reactor Information System of the IAEA : "Czech Republic: Nuclear Power Reactors" (English)