The VRESAP pipeline is a continuous steel conductor with little electrical resistance over 114KMs.
There are 9 transformer/rectifiers, each capable of discharging 50 volts DC and limited to 50 amps output.



This is a link to further information about the Impressed Current Cathodic Protection Stations (ICCPS)

There are three railways (marked in yellow) crossing the pipeline and these could provide conductive paths limiting the spread of protection.

This is a link to details about the railways.

There are zinc ribbons buried in the pipeline ditch that can be connected or disconnected to the pipeline. These are located where overhead power lines run close and parallel to the pipeline. It is possible that AC charges could be induced into the zinc. The concept and actual function of these zinc ribbons should be fully investigated.

This is a link to a discussion on this topic