Papers
Plastic Pipes Conference Association # 2014 Chicago
Doug Seargeant, P. Eng.
Many utilities experience problems related to corrosion of buried metallic components of their water distribution systems. In seeking non-metallic alternatives to solve these problems, questions concerning the life expectancy of these alternatives are often raised. This paper describes testing of Poly Vinyl Chloride (PVC) pipe material after being in service for more than 25 years in Edmonton. The first use of PVC water main pipe manufactured to AWWA C900 in the City of Edmonton occurred in 1977. The increasing rate of water main failure in the cast iron water main material used previously in the distribution system led the water utility to seek a non-metallic alternative. This initial installation in 1977 quickly led to PVC becoming the material of choice for water distribution piping used for replacement of the deteriorating cast iron piping system as well as for installations in newly developing areas of the city. By the end of 2013, the length of PVC pipe in the City of Edmonton water distribution system was over 1, 600 kilometres (1,000 miles) representing 47% of the total length of pipe in the water distribution system. In 1994, a study was undertaken to review the City of Edmonton’s experience with respect to the performance of PVC pipe over time and to assess the integrity of material which had been in service for 17 years. In 2005, the decision was made to revisit the methodology used in the 1994 study and look at PVC pipe that had been in service for at least 25 years. This paper summarizes the findings in those studies and provides additional information on EPCOR’s water distribution system in Edmonton.
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Author(s) : Paul J. Freudenthaler, Joerg Fischer, Mathias Eder, Reinhold W. Lang
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Author(s) : Greg Scoby, PE
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Author(s) : Eng. Grigorios Vigellis, Eng. Mohamed Hageb
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Author(s) : C. Losher and P.V. Mercea
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Author(s) : Ulrich Schulte, Dr. -Ing. Joachim Hessel
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Author(s) : Amster Howard
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Author(s) : Steven Folkman
A recent survey again confirms that PVC pipe has the lowest break rate when compared with break rates of ductile and cast iron, asbestos cement, steel, and concrete pipe. Other results of interest to water utilities and engineers are discussed. During 2017, Utah State University conducted a survey of utilities across...
Author(s) : Davidovski Zoran
To get a deeper insight in why plastic pipes systems in some cases are deselected by designers, installers and users, European Plastics Pipes and Fittings Association (TEPPFA) initiated a research including interviews in four pilot countries: Poland, France, Germany and the UK. The first phase was concentrating on...
Author(s) : Joerg Fischer, Paul J. Freudenthaler, Patrick R. Bradler, Reinhold W. Lang, Susan C. Mantell
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Author(s) : Joerg Fischer, Patrick R. Bradler, Reinhold W. Lang
In the present paper, a novel test system for conducting fatigue crack growth (FCG) experiments under superimposed mechanical-environmental conditions is presented. FCG experiments were performed on a polypropylene (PP) grade and a short-glass fiber reinforced polyamide 66 (PA-GF) grade as model materials. The...
Author(s) : Ilari Aho, Volker Meyer, Peter Sejersen
The lack of a cross-border acceptance of the approval of the hygienic requirements for plastic pipes systems is inefficient and expensive for the industry. The costs for testing of a pipe system range from a few thousand Euro to more than €30k /reference 3, 4/. The European Plastic Pipe and Fitting Association...
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