polyethylene pipe Articles

  • Transfer of phthalates from c-polyvinyl chloride and cross-linked polyethylene pipe (PEX-b) into drinking water

    Several different materials have been used for production of domestic water pipes throughout history. In recent years, the use of cross-linked polyethylene (PEX) pipe has increased dramatically, yet the potential for leaching of phthalates, which are endocrine disrupting compounds associated with adverse reproductive effects in humans, has not been examined. In this study, the potential of ...


    By IWA Publishing

  • Long-term study of migration of volatile organic compounds from cross-linked polyethylene (PEX) pipes and effects on drinking water quality

    The objectives of this study were to investigate migration of volatile organic compounds (VOCs) from cross-linked polyethylene (PEX) pipes used for drinking water produced by different production methods, and to evaluate their potential risk for human health and/or influence on aesthetic drinking water quality. The migration tests were carried out in accordance with EN-1420-1, and VOCs were ...


    By IWA Publishing

  • Greenwood township pipe manufacturer expands

    Greenwood Township - Increased demand - particularly from the oil and gas industry - has resulted in an $8 million expansion at a Crawford County pipe manufacturing plant. Los Angeles-based JM Eagle, a maker of plastic pipe that’s used by the utilities, oil and gas and agricultural industries, Thursday celebrated completion of the project at its Greenwood Township pipe manufacturing ...


    By JM Eagle

  • Time-Temperature Superposition in Mechanical Durability Testing of Polyethylene Geomembranes

    The mechanical durability of polyethylene geomembranes is considered in this technical note. Polyethylene plastic pipe research has shown that there are universal factors for shifting high-temperature failure (short time) data to low temperatures (long time). Data presented here indicate that these same shift factors may also apply to geomembranes. Crack growth rate studies are proposed as a ...


    By ASTM International

  • Evaluating the pressure-leakage behaviour of leaks in water pipes

    Much progress has been made over the last decade in understanding the behaviour of flow through leak openings with changes in water mains pressure. In particular it has been established that variations in leak areas with pressure is the main factor responsible for the range of leakage exponents observed in practice, and several numerical and experimental studies have investigated this ...


    By IWA Publishing

  • Experimental characterization of PVC-O pipes for transient modeling

    The increasing use of plastic materials has modified several aspects of design and management of water distribution systems. With reference to the numerical modeling of transients, the definition of a correct rheological model of the pipe material is receiving an increasing interest. In this paper the behavior of the molecularly oriented polyvinyl chloride (PVC-O) pipes during transients is ...


    By IWA Publishing

  • Organic compounds migrating from plastic pipes into water

    Case studies were carried out to identify potential chemical contaminants migrating to drinking water from polyvinyl chloride (PVC) or polyethylene (PE) pipes, available on the Polish market. Analyses were carried out by gas chromatography (GC) coupled with mass spectrometry (MS). Analysis of organotin compounds in water in contact with PVC pipes from different manufacturers found variability: ...


    By IWA Publishing

  • Impact of weather conditions on pipe failure: a statistical analysis

    The occurrence of pipe failures in drinking water distribution networks may be influenced by weather conditions. In this work, a statistical analysis is performed to study the correlations between weather parameters and pipe failure in the Netherlands with the ultimate aim to predict the effects of climate change on network integrity. Failure data from a Dutch national failure database were ...


    By IWA Publishing

  • Effects of pipe materials on biofouling under controlled hydrodynamic conditions

    Experiments were carried out to investigate pipe material impacts on biofouling, at high effluent concentration levels and under controlled hydrodynamic conditions. Two velocities (0.4 and 0.8 m s−1) were used to monitor biofilm growth on polyethylene (PE) and polyvinylchloride (PVC) pipe walls, respectively. These conditions were established based on wastewater irrigation practices. A ...


    By IWA Publishing

  • A holistic decision-making framework for selecting domestic piping materials

    A life cycle impact assessment (LCIA) was carried out for three types of materials commonly used in domestic plumbing systems, copper, cross-linked polyethylene (PEX), and chlorinated polyvinyl chloride (CPVC), to examine the efficiencies and tradeoffs involved in the material selection process. The LCIA results revealed that for all midpoint and damage impact categories, PEX systems have less ...


    By IWA Publishing

  • BOSS 2000 HDPE Storm Sewer Pipe, Stettler, AB

    Owner: Town of Stettler Installer: Woooden Construction Ltd. Designer: Associated Engineering Alberta Ltd. Location: 57 Street, Stettler, Alberta As part of a sanitary main replacement project, the Town of Stettler was faced with the challenge of replacing an aging storm sewer line under very low cover conditions. ...


    By Armtec

  • Uncertainties of inverse transient modelling with unsteady friction and pipe-wall viscoelasticity

    The current paper aims at the discussion of the uncertainties of hydraulic transient modelling using the classic method of characteristics and incorporating unsteady friction (UF) and pipe-wall viscoelasticity. A two-stage calibration procedure is used for estimating the model parameters: the first stage refers to the calibration of steady state conditions and the second stage to the transient ...


    By IWA Publishing

  • What’s in those new plastic pipes delivering drinking water?

    Lingering questions leave some concerned about a new generation of plumbing material The calls and e-mails arrive as often as several times a week from people with concerns about drinking water. Some of the callers — who include homeowners, architects and builders — want to know why their water smells like gasoline. Others want to know which kinds of pipes to ...


    By Ensia

  • The cleaning method selected for new PEX pipe installation can affect short-term drinking water quality

    The influence of four different cleaning methods used for newly installed polyethylene (PEX) pipes on chemical and odor quality was determined. Bench-scale testing of two PEX (type b) pipe brands showed that the California Plumbing Code PEX installation method does not maximize total organic carbon (TOC) removal. TOC concentration and threshold odor number values significantly varied between ...


    By IWA Publishing

  • World`s Largest Pipe Contract Awarded to Fabricated Plastics for Expansion of Petrochemical Complex in Texas

    When Fabricated Plastics Limited of Maple, Ont., was given the contract to supply all the piping required for the expansion of a plastics resin plant in southern Texas, it proved to be the largest single pipe contract ever awarded. In terms of variety of pipe and chemical service requirements, it was also one of the most complicated and demanding, with different molded laminates and pipe lining ...


    By Fabricated Plastics Limited

  • Influence factors of organic compounds leaching from PE pipes and the potential toxic effects on E. coli and rat C6 glioma cell

    Water quality safety is always a hot topic. Recently there has been a great increase in the use of polyethylene (PE) pipes in drinking water distribution systems in China. Some organics can leach from PE pipes into drinking water, which is undoubtedly harmful for consumers. In this study, potential organics leaching from two Chinese brands of PE pipe were investigated in order to determine the ...


    By IWA Publishing

  • Comparison of viscoelastic models with a different number of parameters for transient simulations

    The numerical and analytical models used for transient simulations, and hence for the pressurized pipe system diagnosis, require the definition of a rheological component related to the pipe material. The introduction and the following widespread use of polymeric material pipes, characterized by a viscoelastic behavior, increased the complexity and the number of parameters involved in this ...


    By IWA Publishing

  • Life Cycle Analysis of Water Networks

    Abstract Water authorities around the world are faced with the problem of ageing distribution networks and often only limited historical data on which to base a sound long term, cost efficient replacement policy. The LICAN approach to whole of life costing is introduced and a hypothetical case study is used to demonstrate the importance of such an approach. A selection of pipe networks ...


    By Tric Tools, Inc.

  • Impacts of liquefaction on the potable water system of Christchurch in the 2010–2011 Canterbury (NZ) earthquakes

    This paper explores the performance of the potable water system of Christchurch during the series of strong earthquakes that hit Canterbury, New Zealand, in 2010–2011. Widespread soil liquefaction, consequent ground deformation (failures) and large lateral spreads shattered the lifelines and infrastructure over approximately one-third of the city area. The wastewater system was hit ...


    By IWA Publishing

  • Rainstore3 - Issues Related to Resin “Creep”

    For eight months prior to beginning construction of our first Rainstore3 injection mold, we worked closely with Stress Engineering to create the optimum structural design characteristics of the Rainstore3 form, including long term integrity and performance of the selected resins. For the best structural performance, chemical resistance, and lowest production (resulting in lowest market prices), ...


    By Invisible Structures, Inc.

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