Stray Current Influence Tests and Drainage Protection of Zhongshi-Jingmen Crude Oil Pipeline

Cathodic protection system of Zhongshi-Jingmen crude oil pipeline could not work normally due to the influence of stray current.The reasons for the stray current interference had been found through field tests.In accordance with SY/T 0032-2000《Standard for AC influence drainage protection of buried steel pipeline》,cathodic protection system could work normally after embedded drainage protection was installed.