Sanmen Nuclear Power Station

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Sanmen Nuclear Power Station
Sanmen Nuclear Power Station.jpg
CountryChina
LocationSanmen County, Taizhou, Zhejiang
Coordinates29°6′4″N 121°38′31″E / 29.10111°N 121.64194°E / 29.10111; 121.64194Coordinates: 29°6′4″N 121°38′31″E / 29.10111°N 121.64194°E / 29.10111; 121.64194
StatusOperational
Construction beganUnit 1: April 19, 2009
Unit 2: December 15, 2009
Commission dateUnit 1: September 21, 2018
Unit 2: November 5, 2018
Construction costCNY 40.1 billion ($6.12 billion USD, estimate only)[1]
Owner(s)China National Nuclear Corporation (CNNC) [2]
Operator(s)Sanmen Nuclear Power[2]
(subsidiary of CNNC)[3]
Nuclear power station
Reactor typePWR
Reactor supplierWestinghouse
Cooling sourceShefan Channel
Thermal capacity2 × 3400 MWth (operational)
Power generation
Units operational2 × 1157 MW
Make and modelWestinghouse AP1000
Units planned2 × 1100 MW
Nameplate capacity2314 MW
External links
Websitewww.smnpc.com.cn/%20www.smnpc.com.cn
CommonsRelated media on Commons

The Sanmen Nuclear Power Station (Chinese: 三门核电站) is a nuclear power station in Sanmen County, Zhejiang, China. Sanmen is the first implementation of the AP1000 pressurized water reactor (PWR) developed by Westinghouse Electric Company.

History[edit]

The contract for the plant was agreed in July 2007.[4] Announcement of the project start came roughly twelve months after Westinghouse won a bidding contest over other companies. The contract for the new plant involved The Shaw Group (now Chicago Bridge and Iron), a minority shareholder in Westinghouse. Westinghouse is controlled by Japanese Toshiba. The Shaw Group will provide engineering, procurement, commissioning, information management and project management services.[4] The first pair of reactors were estimated to cost more than 40 billion yuan (US$5.88 billion).[5] Groundbreaking for the first and second units was held February 26, 2008.[6][7] Excavation for the first unit was completed in September 2008. Quality of the pit was certified, putting the project 67 days ahead of schedule.[8] Construction of Sanmen Unit 1 began on April 19, 2009, as the first 5,200  of concrete were poured for the foundation, in a ceremony attended by State Nuclear Power Technology Corporation (SNPTC) chair Wang Binghua and Westinghouse CEO Aris Candris.[9][10] First concrete for Sanmen 2 was poured on December 15, 2009.[11]

In June 2014, China First Heavy Industries completed the first domestically produced AP1000 reactor pressure vessel for the second AP1000 unit.[12]

The units were originally projected to begin operation in 2014 and 2015. In April 2015, a start date of 2016 was projected for both.[13] One month later, the start date was put back to 2017.[14][15] In January 2017 China National Nuclear Corporation (CNNC) announced that the final reactor coolant pump had been installed with start of operations still foreseen for 2017.[16] As of March 2018, Sanmen 1 has completed pre-fuelling safety checks but is not expected to be connected to the grid until the fall of 2018 at the earliest.[17] Hot testing of Sanmen 1 was completed in June 2017, and fuel loading started on April 25, 2018. It subsequently became the first AP1000 reactor in the world to achieve first criticality at 2:09 AM on June 21, 2018,[18] and was connected to the grid on June 30, 2018.[19] Sanmen Unit 1 entered into commercial operation on September 21, 2018.[20]

Sanmen Unit 2 achieved first criticality on August 17, 2018 and was connected to the grid on August 24, 2018. Full-power demonstration testing was completed on November 5, 2018, and the unit is now considered to be in commercial operation.[21]

In March 2019 Sanmen Unit 2 shut down because of a reactor coolant pump defect, with the root cause still under investigation.[22] A replacement pump has been shipped from the United States by Curtiss-Wright. There have been previous problems with these pumps with impeller blade quality, which involved the return of three pumps to the U.S. in 2013.[23][24]

Reactor data[edit]

The Sanmen Nuclear Power Plant consist of 2 operational reactors.

Unit Type Construction start First criticality Grid connection Commercial operation Notes
Phase I
Sanmen 1 AP1000 April 19, 2009 June 21, 2018[25] June 30, 2018[19] September 21, 2018[20] [26]
Sanmen 2 AP1000 December 15, 2009 August 17, 2018[27] August 24, 2018 November 5, 2018[21] [26]

See also[edit]

References[edit]

  1. ^ "China Nuclear Power | Chinese Nuclear Energy – World Nuclear Association". www.world-nuclear.org. World Nuclear Association. Retrieved 17 October 2017.
  2. ^ a b "Nuclear Power Reactor Details – SANMEN 1". Power Reactor Information System (PRIS). International Atomic Energy Agency. Archived from the original on 4 June 2011. Retrieved 16 December 2009.
  3. ^ 浙江三门核电站 [Zhejiang Sanmen Nuclear Power Station] (in Chinese). China Nuclear Engineering & Construction Corporation. Retrieved 1 July 2018.
  4. ^ a b "Westinghouse and Shaw Sign Historic Contracts to Provide Four AP1000 Nuclear Power Plants in China". Business Wire. 24 July 2007. Retrieved 16 January 2014.
  5. ^ "China starts building 3rd-generation nuclear power reactors using Westinghouse technologies". Xinhua. 19 April 2009. Retrieved 21 April 2009.
  6. ^ "First 3rd-generation nuclear plant to be built". Xinhua News Agency. 27 February 2008. Retrieved 30 July 2008.
  7. ^ "Nuclear power in China". Information Papers: Country Briefings. World Nuclear Association (WNA). June 2008. Retrieved 16 December 2009.
  8. ^ "Sanmen excavation completed early". World Nuclear News. 2 September 2008. Retrieved 18 February 2017.
  9. ^ "1st phase of Sanmen nuclear plant under construction in E China Archived 2009-04-23 at the Wayback Machine". Xinhua. April 19, 2009.
  10. ^ "First concrete at Sanmen". World Nuclear News. WNA. 20 April 2009. Retrieved 16 December 2009.
  11. ^ "Sanmen 2 under construction". World Nuclear News. WNA. 16 December 2009. Retrieved 16 December 2009.
  12. ^ "China produces first AP1000 vessel". World Nuclear News. 11 June 2014. Retrieved 6 August 2014.
  13. ^ "Steam generator installation under way at Sanmen 2". World Nuclear News. 24 April 2015. Retrieved 28 May 2015.
  14. ^ "Newbuild: CNNC Reveals New Delay at Sanmen -- to 2017". Nuclear Intelligence Group. 29 May 2015. Retrieved 6 February 2016.
  15. ^ "More delays for China's first AP1000". Nuclear Engineering International. 11 March 2016. Retrieved 12 March 2016.
  16. ^ "Construction milestones at new Chinese units". World Nuclear News. 5 January 2017. Retrieved 18 February 2017.
  17. ^ "Nuclear News Weekly Roundup – 02/25 – 03/04".
  18. ^ "Chinese AP1000s pass commissioning milestones". www.world-nuclear-news.org. 22 June 2018. Retrieved 23 June 2018.
  19. ^ a b "First Westinghouse AP1000 Plant Sanmen 1 Begins Synchronization to Electrical Grid". Retrieved 2 July 2018.
  20. ^ a b "First AP1000 reactor enters commercial operation – World Nuclear News". www.world-nuclear-news.org. World Nuclear Association. 21 September 2018. Retrieved 24 September 2018.
  21. ^ a b "Sanmen 2 AP1000 enters commercial operation – World Nuclear News". www.world-nuclear-news.org. World Nuclear Association. 6 November 2018. Retrieved 7 November 2018.
  22. ^ "CURTISS-WRIGHT PROVIDES UPDATE ON AP1000 REACTOR COOLANT PUMPS". Curtiss-Wright Corporation. 1 April 2019. Retrieved 25 July 2019. At this time, the root-cause of this situation, presently limited to a single RCP, is unknown and we are in the process of evaluating the cause(s) in conjunction with Westinghouse and China.
  23. ^ "US-designed Chinese nuclear reactor forced to shut by pump defect". Platts. S&P Global. 14 March 2019. Retrieved 23 July 2019. China's Sanmen-2 nuclear reactor, the third US-designed Westinghouse AP1000 unit to begin operating in the world, has been shut temporarily because of a defect in a reactor coolant pump, which is being replaced, a top Chinese nuclear regulator said Thursday. A replacement reactor coolant pump has been shipped from the US ... The pumps were manufactured by US-based Curtiss-Wright. During construction of the Sanmen and Haiyang units in China, several of the pumps were returned from China to the US for repairs after a defect was discovered that resulted in localized heating of the pumps.
  24. ^ "AP1000 pumps China-bound again". World Nuclear News. 15 August 2013. Retrieved 23 July 2019.
  25. ^ "PRIS – Reactor Details – SANMEN-1". www.iaea.org. Retrieved 2 July 2018.
  26. ^ a b "Hot testing of Sanmen 2 AP1000 completed". www.world-nuclear-news.org. Retrieved 15 March 2018.
  27. ^ "Commissioning milestones at Chinese AP1000s – World Nuclear News". www.world-nuclear-news.org. Retrieved 18 August 2018.

External links[edit]