Posted: May 22nd, 2023
Methods that prevent external corrosion of pipelines apply to pipelines that convey gases and liquids. Cathodic protection is one such technique that prevents exterior corrosion of pipelines. This method entails placing a current from an external source via the soil towards the pipeline. Cathodic protection works by causing the employed current to dominate the local anodes making the whole uncovered exterior of the pipeline act like an electrode with a negative charge. The efficacy of this method lies in the fact that corrosion happens in anodic areas.
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