区域阴极保护技术作为油气场站埋地金属设施腐蚀控制的重要手段, 已广泛应用于国内油气储运工程。油气场站的金属接地网消耗了大量的阴极保护电流, 引起电气干扰、电偶腐蚀等问题, 并降低了区域阴极保护的有效性。通过调研已建工程的区域阴极保护运行情况, 结合阴极保护原理和金属接地材料的电化学特性, 分别对油气场站采用铜包钢接地材料和镀锌钢接地材料时的腐蚀特点进行分析, 最后提出了与区域阴极保护相匹配的接地系统优化措施, 保证油气场站的接地网与区域阴极保护系统的兼容性。

Regional cathodic protection technique as an important measure for corrosion control of buried metallic facility in oil/gas station, has been used for oil/gas Storage and Transportation project widely in China. Metallic earthing system will consume lots of cathodic protection current, cause electrical interference, galvanic corrosion etc. and reduce the efficiency of regional cathodic protection finally. Base on the investigation of running oil/gas station, considering cathodic protection philosophy and the electrochemical characteristic of earthing material, analyzes the corrosion characteristic of using copper clad steel earthing material and galvanic steel earthing material separately. Puts forward the optimization for earthing system of oil/gas station finally, and guarantee the compatibility between earthing system and regional cathodic protection system.