Guangdong Taipingling Nuclear Power No. 2 successfully "crowned", and the project was fully transferred to the equipment installation stage

Text/Yangcheng Evening News all -media reporter Zhang Haotu/Correspondent provided

On September 25th, the Campus Dome of the Unit 2 of the No. 2 Division of the Guangdong Taipingling Nuclear Power Project in Guangdong was successfully completed, marking that the country's first ecological nuclear power Taipingling Nuclear Power No. 2 was officially shifted from the civil construction stage to the installation stage of the equipment installation.

Guangdong Taipingling Nuclear Power is the first ecological nuclear power demonstration project in China. It is invested and constructed by China Guang Nuclear Group. The total investment of the project is estimated to be about 120 billion yuan. The plan is divided into 6 million kilowatt -class nuclear power units. Intellectual property "Hualong One" nuclear power integration technology. China Construction Electric Power undertakes the construction tasks of nuclear island in the first phase of the unit 1 and 2.

The dome is an important barrier to the safety of the nuclear power plant. It is an important part of ensuring the integrity and sealing of the reactor plant and realizing the inherent safety. As a result, the dome lifting has become the most important milestone node for the construction of nuclear power stations.

Unit 2 of the nuclear island dome is a half -opening bowl -shaped structure. The diameter of the lower mouth is 45.000 meters, the height is 13.661 meters, and the weight is 225.844 tons. The area of ​​the dome is equal to the size of the 4 standard basketball courts. It is a big challenge to hang such a dome to a 70 -meter altitude, falling on the nuclear island cylinder, and the deviation control at the millimeter level.

In order to successfully complete the No. 2 nuclear island dome, China Construction Power and China -Canton nuclear project team carefully planned, followed up and implemented, continuously improved, and used a number of intelligent nuclear power construction technologies to simulate the construction of the hanging process in advance. "Inside, make sure that the dome is accurate and successfully hangs.

The project team carried out a total of more than a hundred types of work, emergency drills, dome testing, rivet workers and welders welded exercises, including large and small hanging discussions and technical intercourse. More than a hundred pieces, the optimization of the working period has changed from a slogan to a string of reality: "5 days in the end of the shell" "9 days in advance" "The internal structure of the unit of the unit of the unit 2 is only 39 days" "The beef leg construction (the beginning of the hanging to the welding is completed) only uses only 21 days" and "the dome assembled welding for 93 days", and the road of Hualong "crowned" was paved.

The relevant person in charge of China Construction Electric Power said that the construction of nuclear island tube steel lining as scheduled is the key prerequisite for the "Hualong Crownene". During the construction process, China Construction Power vigorously carried out technological innovation. The construction of the on -site assembly welding and overall lifting is carried out to replace the industry's customary block installation and welding, which accelerates the progress of the steel lining, and shortens the key construction path period for one and a half months, obtaining three national patents.

At the same time, the modular crane technology of steel lining is also the first R & D and application in the national nuclear power field, filling the domestic technology gaps and can provide a reference for subsequent nuclear power construction.

According to statistics, the nuclear island of DV and 2 of the Taipingling Nuclear Power Project will use 130,000 tons of steel bars, and the internal structure of the nuclear island is very complicated. The project team develops a three -dimensional physical reinforcement modeling tool and application plug -in, forming its own set of nuclear power reinforced BIM samples and processing software systems. Relying on technology, it has an efficiency of 2%and is expected to save more than 1,300 million yuan.

The completion of the dome lifting is marked that the project is fully shifted from the civil construction stage to the installation stage of the equipment. It is reported that after the first phase of the nuclear power project was completed and put into operation, the annual power generation will reach 16.8 billion kilowatt -hours. After all the six machine groups in the third phase of the third phase will be completed, the annual power generation will reach 50 billion kilowatt -hours. The sustainable development of the Greater Bay Area provides clean energy, effectively improves the power supply structure of the coastal areas in the southeast, and helps the Guangdong -Hong Kong -Macao Greater Bay Area. It also has positive significance for my country to achieve the "dual carbon" goal.

Source | Yangcheng Evening News · Yangcheng School

Responsible editor | Yang Chuyi

School pair | Peng Jiye

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