Meijering
Applications # 2006 Washington DC
Teppfa and Plastics Europe initiated a comprehensive study to provide quantitative figures of the quality of sewers after long life service of up to 30 years. The overall aim and purpose of the project was to determine which sewer pipe materials better fulfil the requirements of sustainability in its broadest sense, operational and environmental. The study was based on examinations of CCTV video inspections of 1800km buried concrete, clay and plastics sewer pipelines in service in Germany, Netherlands and Sweden. Failure types and frequencies were detected and counted according to the new EN13508-2, on basis of these practical data the environmental impacts has been analysed. The outcome of the study is that the performance of flexible plastics (PVC, PE and PP) pipes is significantly better than those of rigid pipe systems, Concrete and Clay. The environmental impact of defects in sewer pipes of plastics pipes are significantly less than that of rigid pipe systems. The clear conclusion of this project is that buried pipes need flexibility. This flexible pipe behaviour reduces the risk to the environment from infiltration and exfiltration. And furthermore, the results of this study are of high interest for the local municipalities where they now can rank the sewer defects in their systems with regard to the environment and use this as a tool for their maintenance policy.
Related papers
Author(s) : Tiem Meijering, Jeannette Mulder, Günter Dreiling, Heinz Vogt
In this study, it has been demonstrated that a 100 years service-lifetime for non-pressure sewage pipes, solid wall pipes and structured-wall pipes of PE and PP, can be expected provided some basic conditions are met. It has been demonstrated that the resistance to thermo-oxidative degradation of the applied materials...
Author(s) : Meijering
The possible effects of plastics pipes on drinking water quality are frequently in discussion and require the highest attention of our industry. On one hand, the European Commission (EC) is working already long time to set up a European Acceptance Scheme (EAS), so far without the desired speed. The Plastic Pipe...
Author(s) : Nury, Meijering
After long time of preparation and co-normative research, the new European Acceptance Scheme for Drinking Water quality (EAS) is progressing now very strongly and will become in force as officially expected in 2006. So, besides the legally required CE marking showing the conformity to the Essential Requirements of the...
Author(s) : Meijering, Wolters, Hermkens
One of the options for a low-pressure gas distribution system is the use of ductile PVC pipes and joints. The long-term performance of ductile PVC pipes has been reported in a number of previous studies. In this paper the long-term performance of the socket joints, in which elastomeric (NBR) sealing rings are used, is...
Author(s) : Meijering
In the Netherlands, a gas distribution system of Ductile PVC with elastomeric sealing ring joints and several special features is already operating to full satisfaction during more than 35 years. Today, Ductile PVC is the preferred material in this market. The total length of the gas distribution net is about 110.000...
Author(s) : Meijering
For reasons of environment and energy savings, the sales of High Efficiency Boilers have been stimulated in the last years. The low temperature flue gas emission which is characteristic for these boilers, leads to condensation of the flue gases in the chimney, attacking the masonry. The condensates contain aggressive...
Author(s) : Meijering
A process has been developed to produce bioriented PVC pipes. Due to the biorientation process, the long term strength has been increased by a factor 2. This means that the design stress of bioriented PVC pipes can be twice of normal extruded PVC pipe. The long term stiffness Of the bioriented pipe has been increased...
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