Evaluation of Current Condition and Lifespan of Drinking Water Pipelines

The condition of underground water pipelines was assessed, and a large amount of data for both the soil and the corresponding pipeline section were collected. Statistical techniques were employed first to establish the sampling design and later for the data analysis and obtaining a mathematical expression for pitting depth as a function of several experimental variables. The data were used to evaluate corrosivity, current condition and lifespan of the pipeline under study and present the results graphically in the form of maps. The approaches and techniques employed here provide a useful tool for structuring maintenance programs.