Plastic Pipes Conference Association # 2012 Barcelona
(Polyethylene, Lifetime, Disinfectant, PE 100) Polyethylene is sensitive to chemical oxidation through the action of disinfectants used in drinking water, as explained in previous works. Based on accelerated ageing tests (high water temperature, chlorination, high pressure level), SUEZ-ENVIRONNEMENT defined a testing methodology to benchmark plastic pipes according to their resistance to chlorine in drinking water. After 6 years of pipe testing, a new generation of PE100 is emerging. However, chlorine resistance is not the only property required for approving the material’s suitability to drinking water networks. Indeed, antioxidant stability within PE, resistance to UV and temperature during outdoor storage, suitability for welding to other PE materials, resistance to slow crack growth and resistance to notch penetration are also very important factors to investigate for operational validation. This paper illustrates the results on one PE100 pipe modified for higher chlorine resistance, called hereafter “PE100-NEW”. However, as good as this new product is, the key point for operators is its suitability works and the ease in which it can be installed (welding, flexibility, handling, laying conditions). Trials in 3 different areas (South West, South East of France and Paris area) were performed in order to test different field conditions and techniques. Feedback obtained from the pipe fitters is described here.
Author(s) : M. Rozental-Evesque, D. Geoffray P. Jacq, B. Rabaud
SUEZ ENVIRONNEMENT has demonstrated that the longevity of potable water connections using HDPE (blue stripes or black) is significantly shortened under the cumulative action of the 3 following factors: - high water temperature- disinfectant type and concentration (chlorine or chlorine dioxide)- high pressure To these...
Author(s) : Chung, Li, Oliphant, Vibien, Rozental-Evesque, Rabaud
Plastic piping materials confer many advantages for applications in Potable Water transportation. Considerable research has been conducted to develop methodologies for ensuring performance in these applications for service lifetimes that target an excess of 100 years. A key component of these accelerated methodologies...
Author(s) : Colin, Audouin, Verdu, Rozental-Evesque, Matin, Bourgine
This article deals with the kinetic modelling of reactions between chlorine dioxide used as disinfectant and components of stabilized polyethylene pipes used for the transport of drinking water. From the study of antioxidant thickness distribution after accelerated aging (20 or 40°C, high concentrations of chlorine...
Author(s) : Rozental
Author(s) : Rozental Magali
Author(s) : Chung, Li, Oliphant, Vibien, Rozental-Evesque, Rabaud)