Lifetime of Polymer Pipes in Water Distribution Systems
This research was a contribution to an ongoing study by the Water Research Centre (WRc) and Anglian Water Services in their assessment of the life of pipes of different materials in water distribution networks. These networks have been constructed over a span of many years, employing improved pipe materials and jointing techniques as these became available. In the past, the pipe materials included, for example, cast and ductile iron, steel and reinforced cement. More recently, there has been a move to the use of polymer pipes, which have the advantage that they do not suffer from corrosion as metal pipes do and their inner surfaces remain clean. Most polymer pipes can be supplied in long lengths, which reduces the number of joints necessary and the pipes can be welded or a variety of mechanical jointing methods can be used. The lightweight and ease-of-handling of polymer pipes reduces the need for costly, heavy installation equipment. Also, the completed polymer pipe installation has a good hydraulic performance because the pipes have, and retain for a long life, smooth inner surfaces.
KeywordsWater Treatment Plant Brittle Failure Hoop Stress Pipe Wall Ductile Iron
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