Olkiluoto Nuclear Power Plant
|Olkiluoto Nuclear Power Plant|
Olkiluoto Nuclear Power Plant in 2015.
|Commission date||10 October 1979|
|Owner(s)||Teollisuuden Voima Oy|
|Nuclear power station|
|Reactor type||2 × BWR|
1 × PWR (EPR)
|Reactor supplier||ASEA-Atom (units 1 and 2)|
Areva (unit 3)
|Cooling source||Gulf of Bothnia|
|Units operational||1 × 880 MW, 1 × 890 MW|
|Make and model||Stal-Laval (units 1 and 2)|
Siemens (unit 3)
|Units under const.||1 × 1600 MW|
|Nameplate capacity||1760 MW|
|Annual net output||14,268 GW·h|
The Olkiluoto Nuclear Power Plant (Finnish: Olkiluodon ydinvoimalaitos) is on Olkiluoto Island, which is on the shore of the Gulf of Bothnia in the municipality of Eurajoki in western Finland. It is one of Finland's two nuclear power plants, the other being the two-unit VVER Loviisa Nuclear Power Plant. The plant is owned and operated by Teollisuuden Voima (TVO), a subsidiary of Pohjolan Voima.
Unit 3 is an EPR reactor and is under construction since 2005. The start of commercial operation was originally planned for May 2009 but the project is delayed and the latest estimate (as of November 2018) for start of regular production is January 2020. In December 2012, the French multi-national building contractor, Areva, estimated that the full cost of building the reactor will be about €8.5 billion, or almost three times the delivery price of €3 billion.
A decision-in-principle for a fourth reactor to be built at the site was granted by the Finnish parliament in July 2010, but in June 2015 TVO decided that it will not apply for a construction license for Olkiluoto 4.
Units 1 and 2
Units 1 and 2 consists of two BWRs producing 880 MW and 890 MW of electricity respectively, with unit 1 also planned to be upgraded to 890 MW in spring 2018. The main contractor was ASEA-Atom, now a part of Westinghouse Electric Sweden AB. Turbine generators were supplied by Stal-Laval. The units' architecture was designed by ASEA-Atom. The reactor pressure vessels were constructed by Uddcomb Sweden AB, and reactor internal parts, mechanical components by Finnatom. The electrical equipment was supplied by Strömberg. Unit 1 was constructed by Atomirakennus and unit 2 by Jukola and Työyhtymä. Unit 1 achieved its initial criticality in July 1978 and it started commercial operations in October 1979. Unit 2 achieved its initial criticality in October 1979 and it started commercial operations in July 1982.
Major upgrades were carried out to the units in 2010 and 2011, including replacement of turbines and generators, isolation valves, electrical switchgear and seawater pumps. The upgrades increased the net electrical output by 20 MWto 880 MW each.
In 2017, unit 2 was upgraded and modernized, increasing the output further to 890 MW from the beginning of 2018. A similar upgrade to unit 1 is planned for spring 2018. The extended maintenance was also made to prepare for a license renewal application. The license extension was granted in September 2018 and allows the reactors to operate until 2038.
In February 2005, the Finnish cabinet gave its permission to TVO to construct a new nuclear reactor, making Finland the first Western European country in 15 years to order one. The construction of the unit began in 2005. The start of commercial operation was planned for 2010, but has been pushed back several times. As of November 2018[update], the estimate for start of regular production is January 2020.
Olkiluoto 3 is the first EPR, which is a type of third generation PWR, to have gone into construction. It will have a nameplate capacity of 1600 MW. Japan Steel Works and Mitsubishi Heavy Industries manufactured the unit's 526-ton reactor pressure vessel.
At the start of construction, the main contractor was Areva NP (now Framatome, after the sell-off mentioned below), a joint venture of Areva and Siemens. However, in 2009, Siemens sold its one-third share of Areva NP to Areva, which is now the main contractor. Siemens remained on the project as the subcontractor with the main responsibility for constructing the turbine hall. Areva sold its majority stake in Framatome (previously Areva NP), its nuclear reactor and fuel business, to Électricité de France.
According to TVO, the construction phase of the project would create a total of about 30,000 person-years of employment directly and indirectly; that the highest number of on-site employees has been almost 4,400; and that the operation phase would create 150 to 200 permanent jobs.
|December 2000||TVO applies to the Finnish cabinet for a decision-in-principle on the new unit|
|17 January 2002||decision-in-principle by the Finnish cabinet|
|24 May 2002||the Finnish parliament approves the decision-in-principle|
|8 January 2004||TVO submits construction application to the Finnish cabinet|
|17 February 2005||the Finnish cabinet approves the construction application|
|July 2005||start of construction|
|May 2006||lifting and installation of the bottom part of containment liner|
|June 2007||reactor building containment liner rises to level +12.5 m|
|May 2008||fuel building APC shell completed|
|January 2009||Siemens withdraws from the joint venture with Areva, leaving the latter as the main contractor|
|January 2009||reactor pressure vessel and vessel head arrive on site|
|May 2009||main control room lifting in Safeguard Building 2|
|Summer 2009||polar crane installation, dome installation|
|Autumn 2009||steam generators arrive on site|
|September 2009||EPR dome installed|
|June 2010||installation of the reactor pressure vessel in the reactor building|
|June 2011||Anne Lauvergeon leaves her position as CEO of Areva|
|November 2011||installation of heavy components of the primary cooling system complete|
|July 2012||delay in start of production to no earlier than 2015 announced|
|December 2012||Areva estimates that the full cost of building the reactor will be about €8.5 billion, or almost three times the delivery price of €3 billion|
|February 2013||TVO said that it is "preparing for the possibility" that the third unit at Olkiluoto may not start operating until 2016|
|February 2014||Areva shutting down construction due to dispute over compensations and unfinished automation planning. Operation estimated to be delayed until 2018–2020.|
|September 2014||Areva announced it expected construction completion and commissioning to start in mid-2016, with operation expected to start in 2018. TVO stated they were surprised that commissioning was expected to take so long.|
|December 2015||The operational automation systems began to be delivered and installed. Commercial operation is estimated for December 2018.|
|January 2016||Testing of the operational automation systems begins.|
|April 2016||TVO submits operating license application to the Finnish cabinet |
|October 2016||TVO calls on Siemens to take financial responsibility for the completion of the project because its project partner, the French Areva Group, is being broken up by the French government.|
|October 2017||The completion is delayed to May 2019 as announced by TVO.|
|December 2017||Hot functional testing begins.|
|February 2018||Fuel for the reactor is on site.|
|March 2018||TVO and Areva come to agreement on delays. Areva will pay €450 million in compensation.|
|30 May 2018||Hot functional tests completed.|
|June 2018||The completion is delayed to September 2019 due to delays in the hot functional testing.|
|November 2018||The completion is delayed to January 2020 due to commissioning tests taking longer than expected.|
The first license application for the third unit was made in December 2000 and the date of the unit's entry into service was estimated to be 2010. However, since the start of construction, several delays to the schedule have been announced. In July 2012 TVO announced that the unit would not go into service before 2015, five years after the original estimate. In a statement, the operator said it was "not pleased with the situation" although solutions to various problems were being found and work was "progressing", and that it was waiting for a new launch date from Areva and Siemens. In February 2014, TVO said that it is could not give an estimate of the plant's startup date, because it was still waiting for the Areva-Siemens consortium to provide it with an updated overall schedule for the project." Later the same month it was reported that Areva was shutting down construction due to the dispute over compensations and unfinished automation planning. According to Kauppalehti, the estimated opening was delayed until 2018–2020.
The delays have been due to various problems with planning, supervision, and workmanship, and have been the subject of an inquiry by STUK, the Finnish nuclear safety regulator. The first problems that surfaced were irregularities in the foundation concrete, and caused a delay of months. Later, it was found that subcontractors had provided heavy forgings that were not up to project standards and which had to be re-cast. An apparent problem constructing the reactor's unique double-containment structure also caused delays, as the welders had not been given proper instructions.
In 2009, Petteri Tiippana, the director of STUK's nuclear power plant division, told the BBC that it was difficult to deliver nuclear power plant projects on schedule because builders were not used to working to the exacting standards required on nuclear construction sites, since so few new reactors had been built in recent years.
At the end of 2013, TVO said that the Areva-Siemens consortium plans to reduce workers and subcontractors on the construction site and says that it expects the contractor to provide details about the expected impact on the project's schedule.
After the construction of the unit started in 2005, Areva began constructing EPRs in Flamanville, France, and in Taishan, China. However, as of July 2012, the construction of the EPR in France is four years behind schedule. Taishan 1 in China became the first EPR to start power generation on 29 June 2018.
The main contractor, Areva, is building the unit for a fixed price of €3 billion, so in principle, any construction costs above that price fall on Areva. In July 2012, those overruns were estimated at more than €2 billion, and in December 2012, Areva estimated that the full cost of building the reactor would be about €8.5 billion, well over the previous estimate of €6.4 billion. Because of the delays, TVO and Areva are both seeking compensation from each other through the International Court of Arbitration.
In October 2013, TVO's demand for compensation from Areva had risen to €1.8 billion, and Areva's from TVO to €2.6 billion. In December 2013, Areva increased its demand to €2.7 billion. In November 2016, the case was still ongoing. On March 10th 2018 French newspaper Le Monde announced that Areva and TVO have reached an agreement. A day later, TVO confirmed that Areva would pay it €450 million in compensation over the delays and lost income. The agreement would settle all legal actions between the two companies.
In 2009, professor Stephen Thomas wrote, "Olkiluoto has become an example of all that can go wrong in economic terms with new reactors," and that Areva and the TVO "are in bitter dispute over who will bear the cost overruns and there is a real risk now that the utility will default."
The project has also been criticized by STUK because "instructions have not been observed in the welding of pipes and the supervision of welding." STUK has also noted that there have been delays in submitting proper paperwork.
Olkiluoto 3 was supposed to be the first reactor of 3+ generation which would pave the way for a new wave of identical reactors across Europe, safe, affordable, and delivered on time. The delays and cost overruns have had knock-on effects in other countries.
The construction workforce includes about 3,800 employees from 500 companies. 80% of the workers are foreigners, mostly from eastern European countries. In 2012 it was reported that one Bulgarian contracting firm is owned by the mafia, and that Bulgarian workers have been required to pay weekly protection fees to the mafia, wages have been unpaid, employees have been told not to join a union and that employers also reneged on social security payments.
On 14 February 2008, TVO submitted an environmental impact assessment of unit four to the Ministry of Employment and Economy. On 21 April 2010, the government of Finland decided to grant a decision-in-principle to Teollisuuden Voima for the fourth reactor in Olkiluoto. The decision was approved by the parliament on 1 July 2010. If constructed, the fourth unit would be a PWR or a BWR with a power output of 1,000 to 1,800 MW.
In September 2014, with unit 3 still unfinished, the Finnish government rejected TVO's request for time extension of the unit 4 decision-in-principle. Economic Affairs Minister Jan Vapaavuori referred to the long delay of the 3rd reactor and to unsatisfactory assurances by TVO that the 4th unit would ever be built. Nevertheless PM Stubb stated that the rejection didn't spell the end for the OL4 project, and that TVO would have the opportunity to apply for a construction license before the decision-in-principle expires in June 2015.
In June 2015 TVO decided not to apply for a construction permit for the Olkiluoto 4 unit because of delays with the unit 3, however saying they are prepared to file for a new decision-in-principle later.
Onkalo spent nuclear fuel repository
The Onkalo spent nuclear fuel repository is a deep geological repository for the final disposal of spent nuclear fuel, the first such repository in the world. It is currently under construction at the Olkiluoto plant by the company Posiva, owned by the nuclear power plant operators Fortum and TVO.
The waste heat, an output common to all thermal power plants, which heats the cooling water (at 13 °C) is utilized for small-scale agriculture before being pumped back to the sea. The power plant hosts the northernmost vineyard in the world, a 0.1 ha experimental plot that yields 850 kg Zilga grapes annually. Another use is a pond for growing crabs, whitefish and sturgeon for caviar.
In April 2014 a turbine steam condenser of unit 1 had a small seawater leak, at a rate of two litres per hour. According to the operator, the leak forced to limit the plant output down to 300 MW, but was not serious and was to be repaired in a day.
- Boiling water reactor
- Nuclear engineering
- Nuclear power in Finland
- Onkalo spent nuclear fuel repository
- Teollisuuden Voima
- Pressurized water reactor
- Into Eternity, a 2010 documentary about the construction of a Finnish waste depository
- Journey to the Safest Place on Earth, a 2013 documentary about the urgent need for safe depositories
Notes and references
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- Kinnunen, Terhi (1 July 2010). "Finnish parliament agrees plans for two reactors". Reuters. Retrieved 2 July 2010.
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- "TVO will not now apply for construction license for OL4" (Press release). 24 June 2015. Retrieved 15 April 2016.
- "Finland, Republic of: Nuclear Power Reactors". Power Reactor Information System. International Atomic Energy Agency (IAEA). Retrieved 30 October 2010.[dead link]
- "Olkiluodon ydinvoimalaitoksella modernisointeja, tehonkorotuksia ja tasaista sähköntuotantoa". TVO. 3 January 2018. Retrieved 7 January 2018.
- "Nuclear power plant units Olkiluoto 1 and Olkiluoto 2" (PDF). Teollisuuden Voima. January 2008. Retrieved 16 April 2018.
- "TVO 1". International Nuclear Safety Center. Archived from the original on 3 December 2017. Retrieved 13 March 2011.
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The OL3 reactor pressure vessel was manufactured at Japan Steel Works and Mitsubishi Heavy Industries
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- Kläsgen, Michael; Büschemann, Karl-Heinz (25 October 2016). "Kernenergie: Wie Siemens doch wieder zum Atomkonzern werden könnte" [Nuclear power: How Siemens could become an nuclear enterprise again]. Süddeutsche Zeitung (in German). Munich, Germany. Retrieved 1 November 2016.
- "Plant supplier informs that regular electricity production of Olkiluoto 3 EPR starts in May 2019". TVO. 9 October 2017. Retrieved 9 October 2017.
- "Hot functional tests begin at Finnish EPR". World Nuclear News. 19 December 2017. Retrieved 16 April 2018.
- "Fuel for Olkiluoto 3 EPR is in Olkiluoto". TVO. 8 February 2018. Retrieved 11 February 2018.
- "TVO confirms a settlement agreement signed on OL3 EPR project completion and related disputes". TVO. 11 March 2018. Retrieved 12 March 2018.
- "Start-up of Finnish EPR put back four months". World Nuclear News. 14 June 2018. Retrieved 15 June 2018.
- "Licensing of Olkiluoto 3: Preliminary safety assessment on the application for a fifth nuclear power plant". STUK. 27 April 2009. Archived from the original on 26 February 2012. Retrieved 10 August 2012.
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- "Areva-Siemens to cut staff at Olkiluoto 3 site -TVO". Reuters. 10 December 2013. Retrieved 18 January 2014.
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- "TVO welcomes partial award in Olkiluoto EPR arbitration". World Nuclear News. 10 November 2016. Retrieved 16 April 2018.
- "Le Monde: Areva to pay hundreds of millions in compensation for delayed OL3 Nuclear Power Plant in Finland". Metropolitan.fi. 10 March 2018. Retrieved 12 March 2018.
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- "Leaked Olkiluoto letter". Nuclear Engineering International. 11 May 2009. Archived from the original on 13 June 2011.
- Katz, Alan (11 September 2007). "Finnish plant demonstrates nuclear power industry's perennial problems". Bloomberg.
- "TVO: Arevalta vaadittu suomalaisten sopimusten noudattamista". Helsingin Sanomat. 10 May 2012. Retrieved 4 December 2013.
- "Paper: Workers at Olkiluoto forced to pay protection money to mafia". YLE. 5 October 2012. Retrieved 4 December 2013.
- "Environmental study for Olkiluoto 4". World Nuclear News. 15 February 2008. Retrieved 21 February 2008.
- "Stubb: Nuclear reactor project still possible despite cabinet rejection". YLE. 25 September 2014. Retrieved 29 November 2018.
- "TVO ei aio hakea rakentamislupaa Olkiluoto 4:lle". YLE. 24 June 2015. Retrieved 15 April 2016.
- "Totuus Olkiluodon viinirypäleistä" [The truth about the grapes at Olkiluoto] (in Finnish). 13 February 2013. Archived from the original on 13 February 2013.
- "Fault at Olkiluoto: Seawater leaks into nuclear condenser". YLE. 14 April 2014. Retrieved 16 April 2018.
|Wikimedia Commons has media related to Olkiluoto Nuclear Power Plant.|
- Radiation and Nuclear Safety Authority in Finland
- European Pressurised Reactor at Olkiluoto 3, Finland – Brief Interim Review of the Porosity and Durability Properties of the In Situ Cast Concrete at the Olkiluoto EPR Construction Reactor at Olkiluoto 3, Finland – Review of the Finnish Radiation Nuclear Safety Authority (STUK) Assessment, R3123-A2, July 2005
- Reactor at Olkiluoto 3, Finland – Review of the Finnish Radiation Nuclear Safety Authority (STUK) Assessment, R3123-A2, July 2005
- Status of Nuclear Power in Finland.