以某联合站和某天然气处理厂的区域性阴极保护为例, 从源头设计和施工技术方面探讨油气厂站区域性阴极保护体系构建中的差异性及注意事项, 补充牺牲阳极块的设置原则, 探索区域性阴极保护的最佳保护效果。

Regional cathodic protection is a corrosion protection technology which is mainly used in intensive areas of underground pipe network and mesh metal structures. When a regional cathodic protection system in oil-gas stations is constructed, the protected objects are not a single one but a complex system which consists of crossed underground pipe network, grounding network and tank bottom. The regional cathodic protection systems in a union station and in a natural gas plant are compared, the difference of regional cathodic protection systems are discussed from the design and construction technology, the setting principle of sacrificial anode block is peresented. The best protection effect of regional cathodic protection is explored.