Annual power generation of 50 billion kWh China's ecological nuclear power construction is steadily advancing

The hoisting of the nuclear island dome of the Hualong No.
1 Unit 2 of the Guangdong Taipingling Nuclear Power Project undertaken by China Construction Power Construction Co.
, Ltd.
was successfully completed on the 25th, marking the official transition from the civil construction stage to the equipment installation stage
of the country's first ecological nuclear power Taipingling Nuclear Power No.
2 nuclear island.

In recent years, with the increasingly safe, clean and efficient nuclear power technology in China, the concept of ecological nuclear power has come into being
.
Shu Guogang, a member of the Nuclear Power Standardization Technical Committee of the Energy Industry, believes that from "nuclear power plants" to "ecological nuclear power plants" is not just a two-word difference
.
Today, with the increasing requirements of environmental protection and the wider participation of the public in the decision-making of project implementation, ecological nuclear power is an important measure
to solve the dilemma of the development of nuclear power industry today.

Guangdong Taipingling Nuclear Power is China's first ecological nuclear power demonstration project, invested and constructed by China General Nuclear Power Group, the total investment of the project is estimated at about 120 billion yuan, the planning is divided into three phases to build 6 million kilowatt-class nuclear power units, the use of China's independent intellectual property rights "Hualong No.
1" nuclear power fusion technology, China Construction Power to undertake the first phase of Unit 1, Unit 2 nuclear island civil construction and steel lining construction tasks
.

Ecological nuclear power requires the establishment of sustainable production and consumption methods premised on respect for and preservation of
nature.
On the one hand, through technology, facility optimization and transformation, the impact of nuclear power plants on the surrounding environment is minimized; On the other hand, through a reasonable design layout, the nuclear power plant can maintain the original form
as much as possible while under construction.

According to reports, the dome is an important barrier to the safety of nuclear power plants, an important part of ensuring the integrity and sealing of the reactor plant, and achieving inherent safety, so dome hoisting has become the most important milestone node
in the construction of nuclear power plant projects.
The nuclear island dome of Unit 2 is a semi-open bowl-like structure, with a diameter of 45.
000 meters, a height of 13.
661 meters, and a weight of 225.
844 tons, the area of the dome is about equal to the size of 4 standard basketball courts, and the dome adopts the overall hoisting process
.

It is a great challenge
to lift the dome to an altitude of 70 meters, land on the nuclear island cylinder, and control the deviation in the millimeter level.
In order to successfully complete the hoisting of the Dome of Nuclear Island No.
2, the project team of China State Construction Power and CGN used BIM and other intelligent nuclear power construction technologies to animate the hoisting process control in advance to ensure that the dome was accurately in place and the first hoisting was successful
.
The project team carried out more than 100 large and small hoisting seminars and technical exchanges, organized dozens of work types such as dome hoisting and hook simulation drills, emergency drills, dome test hoisting, riveting and welding drills totaling 80 times, and overcome more than 100 difficulties
.

Since China State Construction Power participated in the construction of China's first large-scale commercial nuclear power plant - Daya Bay Nuclear Power Station in 1987, it has participated in the construction of 11 nuclear power units and 29 nuclear power units, occupying half of the country in the field of nuclear power construction in China, gradually building "nuclear power construction" into the company's "fist" product, and has a unique competitive advantage
in the field of nuclear power construction.

Completed the construction of the nuclear island cylinder steel lining on schedule is the key premise of "Hualong Coronation", in the construction process, China Construction Power vigorously carried out technological innovation, pioneered the modular hoisting process of steel lining, and adopted the way of workshop prefabrication, on-site assembly welding, and overall hoisting for construction, replacing the industry's usual on-site block installation and welding, accelerating the progress of steel lining construction, shortening the construction period of key construction paths for one and a half months, and obtaining 3 national patents
.
At the same time, the modular hoisting technology of steel lining is also the first research and development application in the field of nuclear power in China, filling the domestic technology gap
.

According to statistics, the nuclear island of units 1 and 2 of the Taipingling Nuclear Power Project will use 130,000 tons of steel bar, and the internal structure of the nuclear island is very complex
.
The project team developed three-dimensional solid steel reinforcement auxiliary modeling tools and application plug-ins, formed its own set of nuclear power steel reinforcement BIM refining, processing software system, relying on science and technology, creating an efficiency of 2%, is expected to save more than 13 million yuan
.

It is reported that after the first phase of the nuclear power project No.
1 and No.
2 units are put into operation, the annual power generation will reach 16.
8 billion kWh, and after the completion of the six units in the third phase, the annual power generation will reach 50 billion kWh, which will provide clean energy for the sustainable development of the economy of the Guangdong-Hong Kong-Macao Greater Bay Area, effectively improve the power supply structure in the southeast coastal areas, and also have positive significance
for China's "double carbon" policy.

Transferred from: China News Network