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分析了长输管道阴极保护系统中出现的各种故障,并根据各种故障的特点,将阴极保护故障分为三类。恒电位仪故障和电缆、参比、阳极故障属于第一类;绝缘法兰故障和防腐覆盖层故障属于第二类;外部交、直流电干扰与其它金属体搭接和外部工程引起的故障属于第三类。分别对这三类故障提出了不同的解决方法。
This paper analyzes various faults that occur in cathodic protection system of long distance pipeline and classifies the cathodic protection faults into three types according to the characteristics of various faults. Potentiostat fault and cable, reference, anode fault belong to the first category; insulation flange fault and corrosion cover fault belongs to the second category; external AC, DC interference and other metal body lap and external engineering caused by the fault belongs to Three categories. Respectively put forward different solutions to these three kinds of faults.