关键词: 第三代核电站, 风机, 控制棒驱动机构（CRDM）, 性能参数, 型式试验

Abstract:

In order to meet requirements of integrated lifting and cooling air flow path of upper reactor structures in generation Ⅲ nuclear power plant, the structure and arrangement of fan in cooling system of control rod drive mechanism （CRDM） were designed to be different from that in traditional nuclear power plant with pressurized water reactor. The study on its performance and identification scheme was important for the design of this kind of equipment. Through the analysis on the design requirements of CRDM cooling system and fan, as well as the calculation of the main performance data with traditional calculation method, the type and structure of the fan were determined. The result shows that the fan is nonstandard and there is no developed product in China, so its design should be certified by testing and engineering practice. According to the key point in the design of the fan, the testing requirements and type test scheme of the fan were drafted for quality appraisal combined with engineering experience and standards, which could provide references for developing the CRDM cooling system fan.

Key words: generation Ⅲ nuclear power plant, fan, control rod drive mechanism （CRDM）, performance parameters, type test