核电厂发电机空冷器腐蚀原因及防腐改造措施

Corrosion Causes of Generator Air Cooler of Nuclear Power Plant and Corrosion Prevention Measures

某核电厂发电机空冷器使用时长仅约5个月,8台发电机空冷器海水侧的进出口盖板均出现相似的严重腐蚀现象,主要表现为密封面边缘的腐蚀凹坑。本文对其腐蚀原因及防腐改造措施进行阐述。

The use time of generator air cooler in a nuclear power plant is only about 5 months,Similar serious corrosion phenomena were found in the inlet and outlet covers of eight generators'air coolers on the seawater side,The main manifestations are corrosion at the edge of the sealing surface corrosion pits.This paper expounds the causes of corrosion and the measures of corrosion protection and transformation.