Doel Nuclear Power Station

Doel Nuclear Power Station
Location of Doel Nuclear Power Station in Belgium
Country Belgium
Location Doel
Coordinates 51°19′29″N 04°15′31″E / 51.32472°N 4.25861°E / 51.32472; 4.25861Coordinates: 51°19′29″N 04°15′31″E / 51.32472°N 4.25861°E / 51.32472; 4.25861
Construction began 1969
Commission date 15 February 1975
Owner(s) Electrabel
Nuclear power station
Reactor type pressurized water reactors
Reactor supplier ACECOWEN, FRAMACECO
Power generation
Units operational 2 x 433 MW
1 x 1006 MW
1 x 1047 MW
Nameplate capacity 2,919 MW
Annual generation 21,670 GWh

The Doel Nuclear Power Station is one of the two nuclear power plants in Belgium. The plant is located on the bank of the Scheldt, near the village of Doel in the Flemish province of East Flanders. The Belgian energy corporation Electrabel is the plant's largest stakeholder. The plant employs 800 workers and covers an area of 80 hectares (200 acres).

The station is located in the most densely populated area of all nuclear power stations in Europe, with 9 million inhabitants within a radius of 75 kilometres (47 mi).[1]

Reactors

Nuclear power plant of Doel

The plant consists of four second-generation pressurized water reactors with a total capacity of 2,919 MWe, making it the second largest nuclear power plant in Belgium, after Nuclear Plant Tihange. Its four units are rated as follows:[2]

Doel 1 and 2 came online in 1975, while Doel 3 and 4 came online in 1982 and 1985, respectively.

Doel 1, 2, and 4 reactors are based on designs by Westinghouse and were supplied by ACECOWEN, a consortium between ACEC, Cockerill, and Westinghouse. The Doel 3 reactor is based on a design by Framatome and was supplied by the FRAMACECO consortium (Framatome-ACEC-Cockerill).[3]

Doel 1 and 2 had a license to operate for 40 years but can operate for a further 10 years with a life extension approved by the regulator. On 15 February 2015, Doel 1 was shut down after 40 years of operation, while discussions continued on a life extension.[4] On 30 November 2015, the Belgian government announced that Doel 1 and 2 will operate for another 10 years, until 2025.[5] They were both successfully restarted during the final week of 2015.[6]

No relief filters present

By answering a question of die Grünen in the Bundestag, the German parliament, the German government replied that the Belgian nuclear power plants do not have filtered containment venting systems installed. In German nuclear reactors these were already built in after the nuclear disaster in Chernobyl in 1986, other countries followed this example, latest after the Fukushima nuclear disaster. This kind of system allows for the containment pressure to be relieved in the event of a severe accident. The non-condensible gases that cause the pressure within containment to rise are released through a stack (or chimney) via a filtration system which removes large quantities of fission products from the effluent. According to the German Government, the nuclear reactors in Tihange are missing these emergency pressure filters too.[7] This news caused quite some unrest in the national and local press around these nuclear reactors.[8][9][10][11][12]

Cooling towers

The station as seen from the opposite bank of the Schelde

With a height of 176 meters, the two cooling towers are the most visible structure in the Port of Antwerp. Due to its proximity to the Dutch-Belgian border, the towers and the accompanying vapor can be seen in large parts of Dutch provinces of Zeeland and western North Brabant. Since 1995, one of the cooling towers has hosted a nest of peregrine falcons.

History

2012 Doel 3 inspection

Doel 3 was shut down at the beginning of June 2012 for a planned inspection. The ultrasonic inspection revealed that there were thousands of semi laminar flaws in the reactor vessel's steel rings forged by Rotterdam Drydocks. These were determined to be hydrogen flakes, which influence steel brittleness and vessel pressure.[13] The reactor remained offline for further inspections and assessment for a year.[14][15][16] Eventually the nuclear regulator judged that the reactor could still operate safely and it was restarted June 3, 2013. The restart, however, was linked to an action plan concerning further investigations of the material properties of the reactor vessel. At the end of March 2014 the test results revealed a different outcome compared to what was anticipated by experts. At the moment no proper clarification for this outcome has been found. Therefore, the operator (GDF Suez) decided to stop the affected power plant until a clarification can be found and further operation of the powerplant is declared safe.[17]

2014 Doel 4 turbine incident

In August 2014 there was a major incident in the non-nuclear part of the plant: the main turbine overheated when it suddenly found itself operating without oil. Rather than a leak it turned out that a valve was opened which rapidly evacuated the 65,000 liters of oil to an underground storage tank. This procedure is to be used in case of fire and is normally secured with a padlock.[18] Hence authorities and the plant operator suspect that this was an act of deliberate sabotage. The unit was eventually back on the grid at 19 December 2014. Combined with the outage of Doel 3 and Tihange 2 blackouts were not ruled out for the winter period of 2014-2015.[19]

April 2016 Doel 1 shut down

On 13 April 2016 Doel 1 was shut down until the end of May for repairs. After a problem was found with a valve of a temperature gauge. Additional tests were planned to look at the power control, to decide what other repairs might be needed. On 12 April the German minister of environment Barbara Hendricks asked whether the reactors Tihange 2 and Doel 3 could be shut down "until questions about safety have been clarified." The Federal Agency nuclear control FANC was not willing to respond to this German wishes. In fact, the supervisor declared the call a 'weird' move, because the decision to restart Doel 3 was taken november 2015. Germany was informed. Nele Scheerlinck: "Germany abuses this issue in the public debate. On the technical level, we do not feel addressed." [20]

Security

A transformer feeding the non-operating Reactor 1 exploded October 31, 2015 causing a small fire.[21][22][23] Early investigations ruled out foul play as a cause.[22][23]

In December 2015, police found that a camera had been set up outside the house of a SCK•CEN nuclear researcher to track their movements, raising fears of extortion of nuclear industry workers.[24] Seven people had their access to the Doel facility revoked after the 2016 Brussels police raids in March 2016,[25][26] and during the 2016 Brussels bombings, the Doel facility was evacuated, along with the Tihange Nuclear Power Station.[27]

On 25 March 2016, a G4S security guard for the National Institute of Radio-elements (IRE) in Fleurus died in a shooting when he walked with his dog in Charleroi.[28][29] His security cards were stolen.[30][31][32] The cards, which give access to nuclear sites in Belgium, were deactivated shortly after the killing was discovered.[28][29] Belgium denied that the guard's death was terror related.[33] A few days later it appeared the rumors were false: the guard didn't work for the nuclear sector and thus no access badge was stolen.[31][34]

See also

Wikimedia Commons has media related to Nuclear power plant, Doel.

References

  1. ↑ Kerncentrale Doel in dichtstbevolkte gebied, deredactie.be
  2. ↑ "Nuclear Power in Belgium". April 2012. Retrieved 24 June 2012.
  3. ↑ "Nuclear Power Reactors in the World" (PDF). IAEA. 2007.
  4. ↑ "Doel 1 shuts down". Nuclear Engineering International. 16 February 2015. Retrieved 20 February 2015.
  5. ↑ "Life extension agreed for two Belgian plants". Nuclear Engineering International. 2 December 2015. Retrieved 9 December 2015.
  6. ↑ "Belgian nuclear plant’s reactor shuts down days after reboot". RT. January 3, 2016.
  7. ↑ AD (11 maart 2016) Belgische kernreactoren missen benodigde filters
  8. ↑ omroep brabant (11 maart 2016) Kernreactor Doel mist belangrijk onderdeel dat radioactieve straling filtert
  9. ↑ Nu.nl (11 maart 2016) duitsland zegt dat belgische kernreactoren filters missen
  10. ↑ ravage-webzine.nl (11 maart 2016) geen filters in belgische kerncentrales
  11. ↑ 4nieuws.nl (11 maart 2016) duitsland zegt dat belgische kernreactoren filters missen
  12. ↑ 1limburg (11 maart 2016) Duitse regering: Belgische kernreactoren missen filters
  13. ↑ Doel-3 in Belgium reports possible pressure vessel flaw, ANS Nuclear Cafe
  14. ↑ Doel 3 investigates potential cracks, Nuclear Engineering International
  15. ↑ Incident at Doel nuclear power station, Belgian Federal Agency for Nuclear Control
  16. ↑ Doel 3: Safety Authorities Meet in Brussels, Belgian Federal Agency for Nuclear Control
  17. ↑ "More flaws found in Belgian RPVs". Nuclear Engineering International. 18 February 2015. Retrieved 20 February 2015.
  18. ↑ "Doel 4 ligt mogelijk tot einde van het jaar uit". vrtnieuws. August 12, 2014. Retrieved 10 September 2014.
  19. ↑ Geert De Clercq (2014-08-14). "Reuters: UPDATE 2-Belgian Doel 4 nuclear reactor closed till year-end". Reuters.
  20. ↑ Trouw (21 April 2016) Doel 1 shut down until the end of May
  21. ↑ "Une explosion et un incendie à la centrale de Doel". La Libre. November 1, 2015.
  22. 1 2 "Explosie in kerncentrale Doel: "Geen aanwijzingen voor kwaad opzet"". HLN.BE. November 1, 2015.
  23. 1 2 Alan Hope (November 2, 2015). "Explosion and fire at Doel nuclear plant over weekend". Flanders Today.
  24. ↑ "Belgium Fears Nuclear Plants Are Vulnerable". The New York Times. 26 March 2016.
  25. ↑ Jen Kirby. "Brussels Suspects May Have Eyed Nuclear Facility -- NYMag". Daily Intelligencer.
  26. ↑ RTBF (24 March 2016). "Centrale nucléaire de Tihange: onze personnes ont été privées de leur autorisation d'accès". RTBF Info.
  27. ↑ "Brussels attacks suspects Ibrahim and Khalid Bakraoui linked to plot to breach Belgium nuclear facility". 24 March 2016.
  28. 1 2 "Brussels attacks: Nuclear alert after security officer found dead with his pass missing". Telegraph.co.uk. 26 March 2016.
  29. 1 2 John Shammas (26 March 2016). "Security guard at Belgian nuclear site 'targeted by terrorists is killed and has access badge stolen'". mirror.
  30. ↑ AD.nl (26-02-2016) safety officer of nuclear plants in Belgium killed
  31. 1 2 Ad.nl (26-03-2016) Killed safety officer did not work at nuclear power plants
  32. ↑ DHnet (26-03-2016) safety officer killed in Charleroi
  33. ↑ "Belgium denies 'terror link' in murder of guard at nuclear centre". Yahoo News. 26 March 2016.
  34. ↑ "Murdered guard did not work in the nuclear sector, no badge stolen". Standaard. 29 March 2016.

External links

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