Zhangzhou Nuclear Power Unit 2 "Coron" successful

Original title: "Hualong One" construction re -innovation record

Zhangzhou Nuclear Power Unit 2 "Coron" successful

Switch to the equipment installation stage from the construction stage of civil construction

Zhang Feiyuan, a successful hanging reporter You Feiyuan in Zhangzhou Nuclear Power Unit 2

Newspaper (Reporter Wu Jingfang) On the morning of August 23, the batch project of my country's independent three -generation nuclear power "Hualong No. 1" -China Nuclear Group Zhangzhou Nuclear Power Unit 2 Dome 2 successfully lifted in advance, creating the premise of the implementation of the "opening method", The "Hualong One" single unit poured from the first can of concrete in the nuclear island to the new record with the shortest dungeon suspension period, marking that the unit was fully transferred to the equipment installation stage from the civil construction stage. The Taiwan units were officially put into operation.

Zhangzhou Nuclear Power No. 1 and No. 2 units 1 and No. 2 are the first construction projects in the batchization of Hualong -1 in China. The inner dome lifting is an important milestone in the construction of the "Hualong One" nuclear power engineering. The dome is located on the top of the nuclear island. The main function is to ensure the integrity and sealing of the reactor plant, which plays a key role in radioactive tolerance. Among them, the dome in the Unit 1 was successfully lifted in October last year. The inner dome is divided into 5 layers, consisting of 153 ball petals, weighing more than 350 tons, which is equivalent to the weight of more than 300 cars.

At 6:8 am on the same day, with the command of the chief commander, the inner dome was slowly hanging from the ground. After a series of high -precision actions such as hooking, upgrading, changing, carriers walking, and turning around the arm of the big arm, the inner dome is accurately reached above the top 2 unit of the unit with a height of about 20 floors. At 9:28 in the morning, the smooth hook was located on the safe shell steel lining.

According to reports, the dome hanging is a large thin -walled steel structure hanging. First, the dome prefabricated dome with a radius of more than 20 meters on the ground is completed on the ground. The difficulty of hanging is first of all deformation control. The error amount of the upper and lower mouths does not exceed 1mm, which is extremely difficult for the 6mm thick thin -walled structure. Secondly, the dome is large, and the wind and wind will bring the risk of hanging operation.

To this end, the Zhangzhou Nuclear Power Project Team is working together to rely on technological innovation and management innovation, to summarize the good practice of the construction of Zhangzhou Nuclear Power Unit 1 in a timely manner, and vigorously promote the modular construction of the nuclear island tube, the automatic stainless steel plasma automatic welding technology, and the gradia. The platform construction and other innovative processes adopt refined management methods such as workshop flowing operations to achieve the main line node on a regular basis. Zhangzhou Nuclear Power Unit 2 has saved the construction period of 24 days from Unit 1.

As my country's "National Business Card" to the world, "Hualong One" is an important achievement of China Nuclear Group to accelerate the realization of high -level technology self -reliance and implementation of the national "dual carbon" strategy. It is the most acceptable three -generation nuclear motor in the nuclear power market in the current nuclear power market. One of the types, which meets the highest international security standards, and has the ability to batch construction, has become a preferred plan for China to contribute to the world. At present, "Hualong One" has four commercial operations worldwide, and the construction of massive projects has been steadily advanced. Each "Hualong No. 1" nuclear power unit has a each year over 10 billion kWh, which can meet the annual production and lifestyle demand of 1 million people in the middle developed countries; 10,000 tons, equivalent to more than 70 million trees. This time, the "national heavy weapon" built new achievements, brightened the "national business card" again, and welcomed the 20th National Congress of the Communist Party of China with actual actions.

Editor -in -chief: Wang Si cone Chen Yan Wu Huihui

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