Electrical Short Pipeline Potential Measurement and its Implication in Pipeline CP Management Practice
This is a paper published in Corrosion Management Magazine ( September 2018, issue 145). It can be accessed from IoCC website. The most important performance indicator for cathodic protection (CP) is the structure-to-electrolyte potential. In most of coated on-shore pipeline, the resistance between the reference electrode and the pipe-to-soil surface boundary is too significant to be ignored. The IR drop caused by CP current is a measurement error. It is stipulated in many CP standards that IR component to be evaluated and excluded while assess the pipe-to soil potential performance in pipeline integrity management. For a well-coated pipeline, the most…
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