| On December 2009, the first major nuclear power pump of Guangdong electric power plant, Dongfang Electric Power Plant, was successfully delivered to China. This marks an important progress in the localization of the main pump, the main component of nuclear power equipment in China, and the domestic matching manufacturing capacity of nuclear power equipment has been significantly enhanced.
According to Si Zefu, general manager of Dongfang Electric Group Co., Ltd., the main pump is one of the main equipment in the nuclear island of the nuclear power station. Due to the high requirements of safety, reliability and stability, and the difficulty in manufacturing, the million kilowatt nuclear power main pump in China has been relying on imports. In 2001, Dongfang Electric Machinery Co., Ltd. of China Dongfang Electric Group, with the support of relevant departments of the state and Guangdong Nuclear Power Group of China, started the localization project of million kilowatt nuclear power main pump. In 2005, Dongfang Electric Group cooperated with AREVA group of France to set up Areva Nuclear Pump Co., Ltd. in Deyang, Sichuan Province, to speed up the process of nuclear power localization through technology introduction and joint venture. In early December 2009, AREVA Oriental successfully completed the development and production of the first nuclear power main pump equipment.
In recent years, China has been able to independently manufacture most of the main equipment of the megawatt class nuclear island, such as pressure vessel (including reactor internals), main pipeline, evaporator and pressurizer. However, the reactor coolant pump of the main equipment of the nuclear island has not yet been manufactured in China, which has become one of the bottlenecks that restrict China to provide one million kilowatt nuclear power main equipment.
According to the understanding, the nuclear power station and nuclear power station are the main parts. Among them, the role of nuclear island is to convert nuclear energy into heat energy. The function of the nuclear reactor coolant pump main pump is to complete the flow cycle of the primary loop high-pressure hot water in the closed nuclear island with radioactive heat energy (high-pressure hot water) generated in the nuclear island, so that the heat energy used by the steam turbine in the conventional island - the high-temperature steam in the secondary circuit is not polluted.