Tianwan NPP – the largest object of economic cooperation between Russia and China

In the PRC, there are currently 50 operating industrial nuclear reactors with a total electrical capacity of 47.5 GW. According to this indicator, China is second only to the United States and France. Although, unlike the latter, where nuclear power accounts for over 70% of the country’s total electricity generation, China has only 5%; seven years ago, the figure was two times lower, and the capacity of all power units was 16 GW.

Russia has made and continues to make a significant contribution to the development of the PRC’s nuclear power industry. Through the efforts of Rosatom, the Tianwan nuclear power plant is being built. It is located in the area of ​​the same name in the Lianyungang city district of Jiangsu province. At the moment, its capacity is 5.5 GW. The facility is the largest within the framework of Russian-Chinese economic cooperation.

Start of construction

The construction of nuclear power plants in eastern China began in 1999. Then the operating capacity of nuclear power in the Asian country was only 2 GW. The Russian company had signed a general contract for the construction of the facility two years earlier with the newly formed JNPC ( Jiangsu Nuclear Power Corporation ).

© 风 之 清扬 / CC BY-SA 3.0 (Construction of the Tianwan NPP, 2010)

Atomstroyexport CJSC – Engineering Division of Rosatom State Corporation – according to the agreements, it was to complete the project of the future plant, supply the necessary materials and equipment, carry out construction and installation work and train Chinese personnel for the further operation of the nuclear power plant.

The AES-91 project, developed by specialists from the St. Petersburg Institute Atomenergoproekt ( now JSC Atomproekt ), was taken as a basis . On its basis, the detailed design of two power units with VVER-1000/320 reactors was carried out. They were put into operation as part of the first stage in the summer of 2007.

At the Tianwan NPP, Russian specialists for the first time used a system of passive protection that was new at that time. Called the Melt Localization Device. This tapered metal structure is installed under the reactor vessel. In the event of a severe accident, retains the melt and solid fragments of the destroyed core, providing insulation for the foundation under the vessel and the reactor building. Thanks to the introduction of the new technology, six years after the launch of the nuclear power plant, its first two power units were recognized as the safest in China. The station began to generate 15 billion kWh annually.

Second stage

Successful cooperation contributed to the continuation of joint work. Russia and China agreed on in the fall of 2009, and in March 2010 they signed a new contract worth $ 1.7 billion for the construction of the second stage. These are power units 3 and 4. According to official publication of Rosatom reported that the negotiations were not easy.

© Mihha2 / CC BY-SA 3.0 / wikimapia.org (Construction of the Tianwan NPP)

By this time, Beijing was cooperating with the Americans, Japanese and French in the field of nuclear energy. Their own projects were also developed. Therefore, the competition for the construction of the next two power units at the Tianwan NPP was serious. The Russian side hoped to sign the treaty back in 2008, but the discussions dragged on.

As a result, taking into account the level of safety and technical and economic indicators, the Chinese side still gave preference to the Russian project. Moreover, it was refined from the technical and operational sides, based on the experience of the accident that occurred in March 2011 at the Fukushima-1 NPP.

The second stage was launched in December 2012. Power unit No. 3 was commissioned at the beginning, and No. 4 at the end of 2018. Everything related to the operation of the nuclear reactor was designed by JSC Atomproekt, the construction, installation and commissioning works were carried out by the Chinese with the participation of specialists from Russia. Chinese President Xi Jinping called the Tianwan NPP an exemplary cooperation project.

New stage

The third stage was implemented by China on its own. The ACPR1000 reactors were installed on the blocks No. 5 and No. 6, which are based on the French project of the M310 reactor.

In the year of completion of the second stage, another agreement was concluded with the Russian side. According to which Atomstroyexport will be engaged in the design of Units 7 and 8. Later, a general contract was signed for construction. These will be new power units with pressurized water power reactors of generation “3+” and with a capacity of 1150 MW each ( VVER-1200 ). Then it was reported that the pouring of the first concrete of power unit No. 7 will begin in 2021. In March of this year, the head of the State Atomic Energy Corporation “Rosatom” Alexei Likhachev confirmed that work on the construction of the fourth stage of the nuclear power plant should begin in late spring.

After the fourth stage is completed, the Tianwan NPP with a total capacity of 8.1 GW will become the largest nuclear power plant on the planet. Until 2011, this was the Japanese Kashiwazaki-kariva ( 8.2 GW ), but after the accident at Fukushima-1, all seven of its units were stopped for modernization. This year, the sixth and seventh are to be restarted, but the fate of units 1-5 is still unknown, it is quite possible that they will never resume work.

Eurasia News Online

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