|Tianwan Nuclear Power Plant|
Unit one and two with the construction site of unit three and four
|Commission date||May 17, 2006|
|Owner(s)||Jiangsu Nuclear Power|
|Nuclear power station|
|Units operational||2 × 990 MW|
2 × 1050 MW
|Units planned||2 × 1150 MW|
|Units under const.||2 × 1000 MW|
|Commons||Related media on Commons|
|Tianwan Nuclear Power Plant|
Tianwan Nuclear Power Station is a nuclear power plant in Lianyungang prefecture level city, Jiangsu province, China. It is located on the coast of the Yellow Sea approximately 30 kilometers east of Lianyungang proper.
The nuclear power plant consists of two reactor units each rated at 1,000 MW capacity and constructed by Russia's Atomstroyexport. The first reactor began full operations in 2006 and the second in 2007.
Construction commenced on 20 October 1999 for the first unit, and on 20 October 2000 for the second reactor unit. The first reactor went critical on 20 December 2005. Construction of the second reactor finished in May 2007 and commercial operation began in August. This is the first time the two countries have co-operated on a nuclear power project.
On 23 November 2010, Jiangsu Nuclear Power Corporation signed a contract with Atomstroyexport according to which Atomstroyexport will supply 1060 MWe VVER-1000 reactors for units 3 and 4. Construction of unit 3 was delayed by the 2011 nuclear accident in Japan, but finally began in December 2012.
China National Nuclear Corporation (CNNC) and Atomstroyexport signed the detailed contract for the construction of two VVER-1200s (Tianwan 7 and 8) on 7 March 2019. Construction of Tianwan 7 will start in May 2021 and Tianwan 8 in March 2022. Commercial operation is expected in 2026 and 2027.
Both units use VVER pressurized water reactor (PWR) technology supplied from Russia. Together they cost approximately US$3.3 billion. The units are the Russian standard reactor type VVER-1000/392 (also carries the designation of VVER-1000/428) adapted specifically for China.
These VVER 1000 reactors are housed in a confinement shell capable of being hit by an aircraft weighing 20 tonnes and suffering no expected damage. Reactors also received additional protection from earthquakes. Other important safety features include an emergency core cooling system and core confinement system. Russia delivered initial fuel loads for the Tianwan reactors. China planned to begin indigenous fuel fabrication for the Tianwan plant in 2010, using technology transferred from Russian nuclear fuel producer TVEL.
"The station has four levels of security. There's a double asbestos cluster, which blocks any kind of emissions. Also there's a revolutionary security improvement called the trap, which prevents any leakage of nuclear fuel in the event of a breakdown", Alexandr Selikhov, Head of Atomstroyexport's delegation to China
The Tianwan Nuclear Power Plant uses third party parts. While the reactor and turbo-generators are of Russian design, the control room was designed and built by an international consortium (including Siemens). In this way the plant was brought to meet the toughest recognised safety standards; safety systems were already mostly in place but the previous monitoring of these systems did not meet international safety standards. The new VVER 1000 plant built in China has 94% of its systems automated, meaning the plant can control itself under most situations. Refueling procedures require little human intervention. Five operators are still needed in the control room.
The Tianwan nuclear power plant has four operating units, two more under construction, and two planned future reactors:
|Tianwan-1||VVER-1000/428 (AES-91)||990 MW||1,060 MW||20 October 1999||12 May 2006||17 May 2007||—|
|Tianwan-2||VVER-1000/428 (AES-91)||990 MW||1,060 MW||20 October 2000||14 May 2007||16 August 2007||—|
|Tianwan-3||VVER-1000/428M (AES-91)||1,050 MW||1,126 MW||27 December 2012||30 December 2017||15 February 2018||—|
|Tianwan-4||VVER-1000/428M (AES-91)||1,050 MW||1,126 MW||27 September 2013||27 October 2018 ||22 December 2018||—|
|Tianwan-5||ACPR-1000||1,000 MW||1,080 MW||27 December 2015||—||—||—|
|Tianwan-6||ACPR-1000||1,000 MW||1,080 MW||07 September 2016||—||—||—|
|Tianwan-7||VVER-1200||1,150 MW||1,200 MW||—||—||—||—|
|Tianwan-8||VVER-1200||1,150 MW||1,200 MW||—||—||—||—|
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