Countermeasures against Stray Current in Oil Storage

Both the electrification railway and pipeline located in the oil storage's area use CP system, the stray current and/or potential difference will produce in the devices and facilities in the oil storage. The potential difference will cause sparkover, fire gas mixture and result in accident while unloading oil or repairing pipeline. Therefor, countermeasures against the stray current should be taken in the places where both stray current and gas mixture likely exists; (1) zoning and insulating control for the oil storage's area; (2) insulating the rail gap and installing switch system; (3) connecting equipotentially and grounding the rail, gooseneck, pipeline, jetty and tank truck; (4) installing the insulating flanges at both ends of pipeline or segment where the stray current possibly produces; (5) adopting the bridge circuit to the separation and crossing of pipeline.