各国压水堆(PWR)核电厂蒸汽发生器(SG)运行经验表明,由于SG二次系统腐蚀产物在传热管、管-管板和管板上沉积,产生沉积物下材料的应力腐蚀、晶间腐蚀、点蚀、均匀腐蚀和耗损等。为了避免沉积物下材料腐蚀造成SG损坏,减少SG的维修。延长SG使用寿命,化学清洗已被各国关注,并用于核电厂的SG清洗。我国现在已 Operating experience of PWR NPs steam generators (SGs) in various countries shows that due to SG secondary corrosion products deposited on heat transfer tubes, tube-tube sheets and tube sheets, stress corrosion of materials under sediment occurs, Intergranular corrosion, pitting, uniform corrosion and wear and tear and so on. In order to avoid SG corrosion damage caused by the material under the deposit, reduce SG maintenance. SG extended service life, chemical cleaning has been the concern of all countries, and SG for nuclear power plant cleaning. My country is now