Basic Training: Basics of Isolation and Safety Grounding on CP Systems

This video covers the basics of using decouplers to simultaneously isolate DC (Cathodic Protection) current while also providing safety grounding to prevent harmful situations from AC fault current and lightning.

[@dentalmanuk]

nice video, I have a question, in case the U/G protected steel pipe is shorted to some foreign structure 1. How to figure out the Surface area of foreign structure 2. Type of foreign structure 3. In case we are unable to isolate then is it advisable to design CP current for foreign structure too? IN case YES then how about the calculation of that structure not part of CP system originally. n does it pose any other problems like interference to neighboring structure specially in refineries.