核电设备制造用关键原材料国产化进展

Progress in Localization of Key Raw Materials for Nuclear Power Equipment Manufacturing

近年来,我国核电关键设备和材料的自主化、国产化取得了重大突破,核电厂关键九大主设备基本实现国产化,尚未完全实现国产化的设备包括核燃料、主泵电机、稳压器安全阀等,受国内技术研发和制造水平所限,部分关键材料仍采用国外进口材料,主要涵盖核燃料、高温金属、石墨等。本文从核燃料元件结构材料、蒸汽发生器用镍基合金U形传热管材料、主泵电机关键部件金属材料、核岛防火密封材料、核级焊接材料几个方面进行了调研,论述了核电设备制造用关键原材料国产化进展情况。

In recent years, major breakthroughs have been made in the autonomy and localization of key equipment and materials in China’s nuclear power plants. The nine key main equipments in nuclear power plants have basically been localized, and the equipment that has not yet been fully localized includes nuclear fuel, major pump motor, regulator safety valve and so on. Limited by the level of domestic technology research and manufacturing level, some key materials still use foreign imported materials, mainly including nuclear fuel, high temperature metal, graphite and so on. In this paper, the structural materials of nuclear fuel components, nickel-based alloy U-shaped heat transfer tube materials for steam generators, metal materials of key components of major pump motors, nuclear island fire protection and sealing materials, and nuclear welding materials are investigated. The progress of localization of key raw materials for nuclear power equipment manufacturing is discussed.