The first application of automatic welding technology in China's nuclear power construction

On the 25th, an internationally advanced narrow-gap automatic welding process was formally applied in the main pipeline welding of No. 1 unit of the Ningde Nuclear Power Station in Fujian Province. This is the first automatic welding technology used in the construction of China's nuclear power plants.

According to Shu Guogang, general manager of China Guangdong Nuclear Power Engineering Co., Ltd., which is responsible for the construction of the Ningde Nuclear Power Station, this technology is co-ordinated by a project team consisting of China National Nuclear Power Engineering Co., Ltd., China Nuclear Power Research and Design Institute, and China National Nuclear Construction Corporation, and other major domestic nuclear power equipment manufacturing companies. The development has completely independent intellectual property rights and has broken the monopolistic advantages of western developed countries in this technology field.

Shuguo Gang said that compared with the traditional welding process, narrow gap automatic welding technology will play an important role in improving the welding quality of the main circuit of nuclear power plants, optimizing the welding duration, and reducing the construction cost of nuclear power plants. After the automatic welding process is adopted, the time for the installation of the critical path on the nuclear island can be shortened by 30 to 45 days. This can result in the commercial operation of a single unit in advance, and realize an economic value of 200 million yuan for a single unit.

China National Nuclear Power Engineering Co., Ltd. is a specialized nuclear power construction and management company under China General Nuclear Power Group. At present, it is also involved in the construction of sixteen million-million-watt nuclear power units including six nuclear power projects in China, including the Ningde Nuclear Power Plant. It is the largest nuclear power unit in the world. Business. Shu Guogang believed that the application of automatic welding technology in Ningde nuclear power construction marks that the CPR1000 project, which accounts for more than half of China’s current nuclear power plant under construction, will fully enter the era of main pipeline automatic welding technology.