The circular belt of the dome of the No. 7 generator unit of the Tianwan Nuclear Power Plant of China National Nuclear Corporation, located in East China's Jiangsu Province, was hoisted into place on May 19, marking the generator entering its installation stage.
The circular belt of the dome of the No. 7 generator unit of the Tianwan Nuclear Power Base of China National Nuclear Corporation, located in East China's Jiangsu Province, is hoisted into place on May 19. [Photo/sasac.gov.cn]
Both of the nuclear reactor buildings of Nos 7 and 8's generator units have a double-containment structure, the dome of which consists of a spherical belt and crown.
The recently-hoisted part is a ring-structure circular belt with upper and bottom diameters of about 36.52 and 44 meters and a height of 12.27 meters. Installation devices with various scales are scattered inside the belt, including 16 dome passive heat exchangers, 44 penetration pieces and four hydrogen recombiners.
A view of the Tianwan Nuclear Power Base [Photo/sasac.gov.cn]
As a result of global nuclear power cooperation in line with the idea of building a community with a shared future for mankind, Nos 7 and 8's generator units are expected to be a benchmark of nuclear security.
Each of the units has an installed capacity of nearly 1.27 million kilowatts and is estimated to generate about 10 billion kilowatt-hours of power annually.
The Tianwan Nuclear Power Base has the largest installed capacity among the world's nuclear power bases, both in operation and while under construction, with a cumulative power output of more than 370 billion kWh so far, meeting the demands of more than 100 million Chinese households for 1.5 years.
Once fully operational, the total installed capacity of the two generator units is expected to exceed 9 million kilowatts, capable of generating more than 70 billion kWh of power annually, equal to a reduction of 57.4 million metric tons of carbon dioxide per year.
The units will play a crucial role in building a clean, low-carbon, safe and highly-efficient modern energy system, promoting green and low-carbon development and realizing China's "dual carbon" goals of peaking carbon dioxide emissions by 2030 and achieving carbon neutrality by 2060.
(Executive editor: Xie Yunxiao)
