When we make voltage measurements pertaining to two or more pipelines we have to relate these to a reference potential in a fixed position so that we can understand the direction of flow of electrical currents.
Corrosion committees are already required by law to mitigate interference corrosion between pipeline owners and their measurements must relate to a common potential to make any sense. There are no boundaries to pipeline networks and we therefore need a common reference potential in the same way that we need the conventions on international time.
This was subject of a paper that I prepared for the international corrosion conference in Istanbul in 2012 but that was rejected by the committee who said that they did not understand it
ReplyDeleteNetwork analysis requires a common zero potential in all electrical and electronic design and all the measurements that we are capable of making in cathodic protection field work are made using electrical instrumentation.
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