energy.wikisort.org - Power_plant

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.

Sanmen Nuclear Power Station
Country	China
Location	Sanmen County, Taizhou, Zhejiang
Coordinates	29°6′4″N 121°38′31″E
Status	Operational
Construction began	Unit 1: April 19, 2009 Unit 2: December 15, 2009
Commission date	Unit 1: September 21, 2018 Unit 2: November 5, 2018
Construction cost	50 billion yuan (7.3 billion USD) for the whole two AP1000 reactor plant [1]
Owner(s)	China National Nuclear Corporation (CNNC) [2]
Operator(s)	Sanmen Nuclear Power[2] (subsidiary of CNNC)[3]
Nuclear power station
Reactor type	PWR
Reactor supplier	Westinghouse
Cooling source	Shefan Channel
Thermal capacity	2 × 3400 MWth (operational)
Power generation
Units operational	2 × 1157 MW
Make and model	Westinghouse AP1000
Units planned	2 × 1100 MW
Nameplate capacity	2314 MW
External links
Website	www.smnpc.com.cn/%20www.smnpc.com.cn
Commons	Related media on Commons
[edit on Wikidata]

History

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 was controlled by Japanese Toshiba. The Shaw Group did provide engineering, procurement, commissioning, information management and project management services.[4]

The first pair of reactors were estimated to cost CNY 32.4 billion yuan, later estimates in 2013 gave figures of CNY 40.1 billion ($6.12 billion USD).[5] The final sum was CNY 10 billion yuan higher.[6]

Groundbreaking for the first and second units was held February 26, 2008.[7][8] Excavation for the first unit was completed in September 2008. Quality of the pit was certified, putting the project 67 days ahead of schedule.[9] Construction of Sanmen Unit 1 began on April 19, 2009, as the first 5,200 m³ 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.[10][11] First concrete for Sanmen 2 was poured on December 15, 2009.[12]

In June 2014, China First Heavy Industries completed the first domestically produced AP1000 reactor pressure vessel for the second AP1000 unit.[13]

The units were originally projected to begin operation in 2014 and 2015. In April 2015, a start date of 2016 was projected for both.[14] One month later, the start date was put back to 2017.[15][16] 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.[17] As of March 2018^[update], Sanmen 1 had completed pre-fuelling safety checks but was not expected to be connected to the grid until the fall of 2018 at the earliest.[18] 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,[19] and was connected to the grid on June 30, 2018.[20] Sanmen Unit 1 entered into commercial operation on September 21, 2018.[21]

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.[22][23]

In March 2019 Sanmen Unit 2 shut down because of a reactor coolant pump defect, with the root cause still under investigation.[24] 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.[25][26]

Reactor data

The Sanmen Nuclear Power Plant consist of 2 operational reactors.[27]

Unit	Type / Model	Net capacity	Gross capacity	Thermal capacity	Construction start	First criticality	Grid connection	Commercial operation	Notes
Phase I
Sanmen 1	PWR / AP1000	1157 MW	1251 MW	3400 MW	2009-04-19	2018-06-21	2018-06-30	2018-09-21	[28]
Sanmen 2	PWR / AP1000	1157 MW	1251 MW	3400 MW	2009-12-15	2018-08-17	2018-08-24	2018-11-05	[29]
Phase II
Sanmen 3	PWR / CAP1000	1163 MW	1251 MW	3400	2022-06-28				[30]
Sanmen 4	PWR / CAP1000				planned & approved

Groundwork for unit 3 and unit 4 has been carried out but then the project nearly came to a stillstand, as all AP-1000 projects have been slowed down significantely. But on 20 April 2022 building the two units was approved by the State Council.[31]

See also

• Nuclear power in China
• Nuclear power debate
• List of nuclear reactors#China

References

External links

• Sanmen Nuclear Power Company Retrieved 2009-12-16.
• "Corporate News" State Nuclear Power Technology Corporation (SNPTC). Retrieved 2009-12-16.
• "Sanmen Nuclear Power Company, Ltd." China National Nuclear Corporation (CNNC). Retrieved 2009-12-16.
• Sanmen Nuclear Power Plant, Zhejiang Province, China

На других языках

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- [en] Sanmen Nuclear Power Station

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[ru] АЭС Саньмэнь

АЭС Саньмэнь (кит. 三门核电站) — действующая атомная электростанция на востоке Китая.

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