Pipeliners Dictionary

Pitting corrosion is a type of localized corrosion that occurs in a pipeline and forms small, isolated holes or "pits" in the metal surface.

Unlike uniform corrosion, which affects the entire surface of a pipeline, pitting corrosion is limited to specific areas and can cause more rapid and severe damage to the pipeline material.

Pitting corrosion is often caused by a combination of factors, including the presence of corrosive substances in the fluid being transported, the presence of stagnant fluid in the pipeline, and the presence of cracks or other imperfections in the pipeline surface. The corrosion can cause small, deep pits to form in the pipeline material, which can weaken the pipeline and increase the risk of leaks or failure.

In order to prevent or mitigate pitting corrosion, it is important to regularly inspect pipelines for signs of corrosion and to take measures to reduce the risk of corrosion, such as using corrosion-resistant materials, applying protective coatings to the pipeline, and ensuring proper flow of the fluid to prevent stagnant conditions. Additionally, pipelines must be regularly monitored and maintained to detect and prevent the formation of pits and to address any other signs of corrosion.

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