Taishan Nuclear Power Plant

Not to be confused with Guohua Taishan Power Station or Qinshan Nuclear Power Plant.

Taishan Nuclear Power Plant
台山核电站
Overview of reactors 1 and 2
Taishan Units 1 & 2
CountryChina
LocationTaishan, Guangdong
Coordinates21°55′4″N 112°58′55″E / 21.91778°N 112.98194°E / 21.91778; 112.98194
StatusOperational
Construction began
  • Unit 1: November 18, 2009 (2009-11-18)[1]
  • Unit 2: April 15, 2010 (2010-04-15)[2]
Commission date
  • Unit 1: June 29, 2018 (2018-06-29)[1]
  • Unit 2: June 23, 2019 (2019-06-23)[2]
Construction cost50.2 billion yuan (US$7.5 billion)
Owner
CGNPC(70%)
EDF(30%)
OperatorTaishan Nuclear Power Joint Venture Company Limited[1][2]
Nuclear power station
Reactors2
Reactor typePWR - EPR-1750
Reactor supplierFramatome (part of Areva, 2006-2018)
Cooling sourceYaogu Bay
Thermal capacity
Power generation
Units operational2 × 1660 MWe (net)[1][2]
Nameplate capacity3,320 MWe[1][2]
Capacity factor
  • 2021:
  • Unit 1: 52.4%[1]
  • Unit 2: 74.8%[2]
  • Lifetime:
  • Unit 1: 66.3%[1]
  • Unit 2: 81.8%[2]
Annual net output22,769.94 GWh (81,971.8 TJ) (2024)[1][2]
External links
CommonsRelated media on Commons

The Taishan Nuclear Power Plant (Chinese: 台山核电站; pinyin: Táishān Hédiànzhàn) is a nuclear power plant in Taishan, Guangdong province, China.[3] The plant features two operational EPR reactors. The first unit, Taishan 1, entered commercial service in December 2018, but was shut down from July 2021 to August 2022 to investigate and fix issues with fuel rod cladding. The second unit, Taishan 2, entered commercial service in September 2019. Delays at other EPR construction sites in Finland and France meant that Taishan was the first nuclear power plant to have an operational EPR.

The project is owned by Guangdong Taishan Nuclear Power Joint Venture Company Limited (TNPC), which is 70% owned by China Guangdong Nuclear Power Group (CGNPC) and 30% by Électricité de France (EDF).

The plant's twin reactors each have a nameplate capacity of 1750 MWe. Its Arabelle generators are the largest single-piece electrical generators in the world, each weighing 495 tonnes and built by Dongfang Electric. Of the 3500 MWe gross delivered, around 180 MWe will be used by plant systems. Most of this is used to power the pumps that feed water into the steam generators. The pair of reactors can deliver 3320 MWe net for supply to the grid, making these the most powerful reactors in the world.[4]

History

Construction

Excavation work began on 26 August 2008.[5] The first concrete for the first unit was poured in October 2009.[6] Construction of each unit was planned to take 46 months, significantly faster and cheaper than the first two EPRs in Finland and France.[7] These plans proved elusive as start up was repeatedly delayed. In February 2017, after 88 months of construction, CGNPC announced that completion of the reactors would be delayed until the second half of 2017 and the first half of 2018.[8]

Areva (more specifically its subsidiary Framatome, which is now independent) was contracted to develop the nuclear island (including reactor) and supply fuel for 15 years, as well as providing technology transfer and engineering services.[9][10]

In December 2017, Hong Kong media reported that a "boiler" had cracked during testing, and that welding on the component was considered "problematic". Neither the nuclear plant's operators nor the manufacturer of the affected component responded to the news agency's request for comment.[11][12] Later clarification revealed that the "boiler" was a deaerator vessel, which removes dissolved oxygen from water by heating it.

In January 2018 commissioning was rescheduled, with commercial operation expected in late 2018 and 2019.[13] This was the third delay in two years, involving a further deferral of 5 billion yuan (US$770 million). It was estimated that the plant’s investment cost would rise to between 22 and 23 yuan per watt from an originally budgeted 14 yuan.[14]

On 9 April 2018, the Official Letter of Approving the Initial Fuel Loading of the first unit of the Taishan Nuclear Power Plant was issued by the National Nuclear Safety Administration (NNSA). Taishan Unit 1 began fuel loading at 18:18 on 10 April, marking the beginning of fuel loading of the first reactor using the third-generation nuclear power technology EPR.[15]

Operations

First criticality was achieved at Taishan Unit 1 on 6 June 2018.[16] On 29 June 2018, Taishan 1 was connected to the grid.[17][18] It became the first EPR to enter commercial operation on 13 December 2018.[19]

On 2 March 2021, the Chinese NNSA reported that a INES level 0 event (defined as a deviation from normal operation with no safety significance) occurred on 21 February, which triggered an automatic emergency shutdown (a SCRAM) of Unit 1. Post-incident investigation revealed the cause of the SCRAM to be a technician accidentally shorting a circuit during an onsite investigation of a slight under-voltage of a 10kV power supply. To prevent this accident from occurring in the future, all nuclear power plants were ordered to revise operating procedures to improve reliability and maintainability of similar power supplies.[20]

On 11 April 2021, the Chinese NNSA reported that another level 0 incident occurred on 5 April, resulting in the unexpected release of radioactive gas into the atmosphere. Post-accident investigation calculated the amount of radioactive release to contribute to 0.00044% of annual limit, well within safety parameters.[21] Further details provided by Framatome revealed that the issue was build-up of xenon and krypton inert fission gases in the primary circuit of Taishan 1, potentially from a leak in a fuel rod housing. The build-up was described as "known phenomenon" which is well covered in the plant's operating and safety procedures.[22]

On 30 July 2021, the plant operator (CGNPC) reported that they have shutdown Taishan Unit 1 for maintenance after lengthy talks with relevant technicians. Engineers would find the cause of the damage and replace the affected fuel rods.[23] On 16 August 2022, Taishan Unit 1 completed maintenance and was connected to the grid on 15 August 2022.[24]

Reactor data

The Taishan Nuclear Power Plant Phase I consists of two reactors: both reactors are in commercial operation. Its Phase II consists of adding two additional reactors.

Unit Type Model Net power (MWe) Gross power (MWe) Thermal power (MWth) Construction start First criticality Grid connection Commercial operation Notes
Phase I
Taishan 1 PWR EPR 1660 1750 4590 November 18, 2009 (2009-11-18) June 6, 2018 (2018-06-06) June 29, 2018 (2018-06-29) December 13, 2018 (2018-12-13) [6][25][26][8][13]
Taishan 2 PWR EPR 1660 1750 4590 April 15, 2010 (2010-04-15) May 28, 2019 (2019-05-28) June 25, 2019 (2019-06-25) September 7, 2019 (2019-09-07) [26][27][28][8][13][29][30]
Taishan 3 PWR Hualong One 1000 MW 1200 MW 3150 MW [31]
Taishan 4 PWR Hualong One 1000 MW 1200 MW 3150 MW [31]

See also

Wikimedia Commons has media related to Taishan Nuclear Power Plant.

References

  1. ^ a b c d e f g h "Taishan-1". Power Reactor Information System, IAEA. 27 August 2022. Retrieved 28 August 2022.
  2. ^ a b c d e f g h "Taishan-2". Power Reactor Information System, IAEA. 27 August 2022. Retrieved 28 August 2022.
  3. ^ "Taishan nuclear power plant to be one of world's largest". People's Daily. 22 December 2009. Retrieved 2 December 2010.
  4. ^ "The generator stator for the Taishan 1 EPR has arrived on site and been hoisted into place for installation". World Nuclear News. 11 October 2013. Retrieved 5 November 2013.
  5. ^ "NPP under construction". China Guangdong Nuclear Power Group. Archived from the original on 2 January 2011. Retrieved 2 December 2010.
  6. ^ a b "Nuclear Power in China". Information Papers. World Nuclear Association (WNA). 29 November 2010. Archived from the original on 13 February 2012. Retrieved 2 December 2010.
  7. ^ Patel, Tara; de Beaupuy, Francois (24 November 2010). "China Builds Nuclear Reactor for 40% Less Than Cost in France, Areva Says". Bloomberg. Retrieved 2 December 2010.
  8. ^ a b c "China delays nuclear reactor start again". Radio France Internationale. Agence France-Presse. 21 February 2017. Retrieved 21 February 2017.
  9. ^ "Large Projects - Taishan 1 & 2". Framatome. Retrieved 15 June 2021.
  10. ^ "First fuel produced for Chinese EPR". World Nuclear News. 11 March 2013. Retrieved 15 June 2021.
  11. ^ "Tests reveal crack in key component of Chinese nuclear power plant, 130 km west of Hong Kong". Hong Kong Free Press. FactWire. 12 December 2017.
  12. ^ "A battle for transparency: Two years of holding Taishan nuclear power plant accountable". 6 July 2018. Archived from the original on 7 November 2020. Retrieved 6 November 2018.
  13. ^ a b c "Taishan schedule factors in commissioning tests". World Nuclear News. 2 January 2018. Archived from the original on 12 June 2018. Retrieved 3 January 2018.
  14. ^ "CGN Power's latest project delay deals another blow to China's nuclear energy ambition". South China Morning Post. 2 January 2018. Retrieved 1 January 2020.
  15. ^ "中法合资广东台山核电站1号机组装料在即". Retrieved 10 April 2018.
  16. ^ "First criticality achieved at Chinese EPR". www.world-nuclear-news.org. 7 June 2018. Retrieved 23 June 2018.
  17. ^ "Taishan 1, world's first EPR connected to the grid". EDF Energy. Retrieved 30 June 2018.
  18. ^ "China's Taishan 1 reactor connected to grid". www.world-nuclear-news.org. 29 June 2018. Retrieved 5 July 2018.
  19. ^ "First EPR enters commercial operation". World Nuclear News. Retrieved 16 December 2018.
  20. ^ "台山核电厂1号机组正常功率运行期间一台主泵跳闸导致反应堆自动停堆运行事件_国家核安全局". nnsa.mee.gov.cn (in Chinese (China)). Retrieved 15 June 2021.
  21. ^ "台山核电厂1号机组废气处理系统操作期间少量气体短时释放运行事件_国家核安全局". nnsa.mee.gov.cn (in Chinese (China)). Retrieved 15 June 2021.
  22. ^ Stanway, David (15 June 2021). "Explainer-What happened at China's Taishan nuclear reactor?". Reuters. Retrieved 15 June 2021.
  23. ^ "China nuclear: Taishan reactor shut down over damaged fuel rods". BBC News. 30 July 2021. Retrieved 31 July 2021.
  24. ^ "中国广核电力股份有限公司关于台山1号机组运行情况的公告" (PDF). China General Nuclear Power Group (in Simplified Chinese). 16 August 2022. Archived from the original (PDF) on 16 August 2022. Retrieved 16 August 2022.
  25. ^ "Nuclear Power Reactor Details - Taishan 1". Power Reactor Information System (PRIS). International Atomic Energy Agency (IAEA). 16 July 2012. Retrieved 17 July 2012.
  26. ^ a b "EDF says first Taishan nuclear plant to be ready end 2015". reuters.com. Reuters. 29 January 2015. Archived from the original on 3 April 2015. Retrieved 29 April 2015.
  27. ^ "Nuclear Power Reactor Details - Taishan 2". PRIS. IAEA. 16 July 2012. Retrieved 17 July 2012.
  28. ^ "First concrete for second Taishan reactor". World Nuclear News. WNA. 16 April 2010. Archived from the original on 1 April 2012. Retrieved 2 December 2010.
  29. ^ "TAISHAN-2 - World Nuclear Association". world-nuclear.org.
  30. ^ "The second EPR reactor at China's Taishan nuclear power plant about to enter into commercial operation". EDF Energy. EDF. 6 September 2019. Retrieved 9 September 2019.
  31. ^ a b "Ten new reactors approved in China". World Nuclear News. WNA. Retrieved 29 April 2025.
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