What process is known as the buildup of corrosion products that reduces pipeline capacity?

The process referred to as the buildup of corrosion products that reduces pipeline capacity is known as tuberculation. Tuberculation occurs primarily in water supply systems, often as a result of the corrosion of metal pipes, particularly cast iron. Over time, as the pipe material corrodes, it can produce small, localized areas of corrosion that form protrusions or "tubercles." These tubercles can restrict the flow of water, decreasing the effective capacity of the pipeline and potentially leading to pressure drops and reduced water quality.

Additionally, tuberculation can create rough internal surfaces, which may further hinder water flow and promote sedimentation or additional corrosion. This process is distinct from general corrosion, which refers to the overall degradation of material, and fouling and scaling, which involve the accumulation of unwanted materials but do not specifically refer to the corrosion buildup that leads to flow restriction. Understanding tuberculation is crucial for water treatment professionals to mitigate pipeline issues and maintain system efficiency.