Abstract
The problems of designing the electrochemical protection (ECP) of pipelines are considered. It is shown that the application of the same mathematical model describing the potential distribution along the pipeline allows one to minimize the error. The introduction of acceptance test of insulation by the method of cathodic polarization provides high reproducibility of rated parameters of ECP, whereas the consideration of time-variation in the protective properties of pipeline insulation enables one to determine the parameters of cathodic power sources for at least 10 years. The procedure of estimating the corrosion risk of a pipeline, taking into account eight factors affecting the corrosion, is reported.
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