: After nearly three months of hard work, the largest third-generation nuclear power plant steam generator steam separation test device was successfully completed. The device was designed and constructed by the Key Laboratory of Thermal Power and Hydraulic Technology of the Nuclear Nuclear Reactor. It marks a solid step forward in the R & D of the third generation of nuclear power plant evaporators with independent intellectual property rights and also marks the nuclear power plant The hospital has to carry out high-power soda water separation performance test of the hardware conditions, effectively enhance the core competitiveness. Steam water separator is a key component of steam generator. Its performance directly determines the performance of the whole steam generator, which has a significant impact on the safe operation of nuclear power plants. Since the construction of test equipment began in early March, design and construction workers have given up their weekends and holidays to overcome difficulties such as on-site dust, noise and incomplete construction support. According to the technical requirements, the construction of pilot plant was completed on schedule and unit commissioning was successfully carried out. Ready for upcoming commissioning.