Corrosion Protection of Pipelines Conveying Water and Wastewater: Guidelines

摘要

The social importance and economic cost of water and sewage pipelines make it essential to maintain them in good working order. Corrosion is one of the most common factors in their alteration and possible, untimely destruction, but it can be prevented or controlled, usually at a relatively low cost. Based on an analysis of existing literature and a number of case studies, the document suggests a series of guidelines for effective corrosion control. Water treatment can play a key role in preventing or controlling internal pipe corrosion. Coatings or protective outer thin plastic sleeves can effectively guard pipelines against corrosion from external factors. Cathodic protection is also effective, but should be used only where required given the high level of technical sophistication needed for successful operation.