water pipe leak Articles

  • Leak behaviour in pressurized PVC pipes

    The correct definition of the leak law, i.e. the relationship between the leak outflow, the total head at the leak and other relevant parameters such as the pipe material, can seriously affect the accuracy of the numerical models used for the management of water distribution systems, either if they are used to forecast the leakage reduction by pressure management or to locate and size the leaks ...


    By IWA Publishing

  • 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

  • Leak detection by inverse transient analysis in an experimental PVC pipe system

    Leakage reduction in water supply systems and distribution networks has been an increasingly important issue in the water industry since leaks and ruptures result in major physical and economic losses. Hydraulic transient solvers can be used in the system operational diagnosis, namely for leak detection purposes, due to their capability to describe the dynamic behaviour of the systems and to ...


    By IWA Publishing

  • An electromagnetic-based method for pinpointing leaks in buried pipes: a practical validation

    In this paper, a time domain reflectometry (TDR)-based solution for detecting water leaks in underground pipes is described and experimentally validated. The proposed method strongly reduces the inspection time that is typically required by traditional leak detection methods. In fact, it can successfully inspect pipes that are hundreds of meters long. In this work, two different configurations ...


    By IWA Publishing

  • Leak detection by inverse transient analysis in an experimental PVC pipe system

    Leakage reduction in water supply systems and distribution networks has been an increasingly important issue in the water industry since leaks and ruptures result in major physical and economic losses. Hydraulic transient solvers can be used in the system operational diagnosis, namely for leak detection purposes, due to their capability to describe the dynamic behaviour of the systems and to ...


    By IWA Publishing

  • Small Leaks Matter

    In the final part of the leak detection series, we explain why locating small leaks is and important part of a water loss management strategy. To see the first post in the series that outlines the problem of water loss in North America,  ...


    By Pure Technologies

  • Experimental investigation of leak hydraulics

    In recent decades the hydraulics of leaks, i.e. the definition of the relationships linking the hydraulic quantities in pipes with leaks, has received increasing attention. On the one hand, the definition of the relationship between the leak outflow and the relevant parameters – e.g. the leak area and shape, the pressure inside the pipe and outside the leak, and the pipe material ...


    By IWA Publishing

  • Small leaks matter

    In the final part of the leak detection series, we explain why locating small leaks is and important part of a water loss management strategy. To see the first post in the series that outlines the problem of water loss in North America,  ...


    By Pure Technologies

  • Case study - Dallas Water Utilities - Leak Detection

    Service: Sahara Leak Detection Client: Dallas Water Utilities (DWU) Department of Public Works Type of Pipeline: Raw Water Transmission Main Diameter: 108-inch Pipe Material: PCCP Length: 7.3 miles The City of Dallas Water Utilities (DALW) currently draws its raw water from six sources: the Elm Fork of the Trinity River and Lakes Ray Roberts, Lewisville, Grapevine, Ray ...


    By Pure Technologies

  • Tackling Non-Revenue Water by Identifying Small Leaks

    Small leaks sink big ships – the same can be said for large-diameter pipes in utility networks. While large leaks or ruptures are seen as newsworthy stories accompanied by images of water flowing down the streets; smaller leaks can often be more devastating. Left undetected, they can add up over time, contributing significantly to ...


    By Pure Technologies

  • Closing the last Energy Leak

    The heat contained in wastewater is one of the last major untapped resources in the field of renewable energies, despite the fact that it may some day provide some 20% of the heating energy we need. This huge potential has been addressed by a Swiss engineering office, Rabtherm AG, which now supplies patented technology for generating energy from wastewater, used for heating or cooling buildings. ...


    By RABTHERM AG

  • Unique technology for monitoring piped water

    INTELLITECT WATER has launched a unique, highly innovative drinking water monitoring technology that will revolutionise the delivery of drinking water. The new technology monitors the quality of water in pipeline distribution networks and for the first time provides reliable data to protect the integrity of the water quality, to enhance customer satisfaction and to improve operational efficiency. ...


    By Intellitect Water Ltd

  • Leak-before-break in cast iron mains: a failure analysis of a catastrophic pipe burst on Harris Street, Sydney

    This article analyses the failure of a 500 mm-diameter cast iron (CI) water pipe that catastrophically fractured in Sydney in 2013. According to metallurgical analysis and finite element simulation, a longitudinal pre-existing crack initiated from the adjacent bell-joint and eventually propagated to a critical length in the pipe barrel over a certain period. There was evidence of leakage prior ...


    By IWA Publishing

  • The quick and easy solution for pond leaks

    Are you tired of trying to fix that pond leak. Tried product after products For over 30 years ponds and fountains have been coated with epdm liners and have been seen as the only solution for pond repair. Many people are not aware that there is a liquid version of epdm rubber that has been specially formulated for fish friendly ponds. This one coat application has been the solution for thousands ...


    By Pondpro2000

  • Birmingham Water Works Board Leak Detection Program case study

    Service: SoundPrint AFO Client: Baltimore City Project Date: 2012 Location: Baltimore, MD Type of Pipeline: Water Transmission Main Diameter: 54-inch (1350mm) Pipe Material: PCCP ...


    By Pure Technologies

  • Case study - Birmingham water works board identifies 26 leaks using advanced inline leak detection

    Service: SmartBall Leak Detection Client: Birmingham Water Works Board Project Date: January 2012 - ongoing Location: Birmingham, Ala Type of Pipeline: Water Transmission Main Diameter: 42-inch (1050mm) Pipe Material: Reinforced Concrete Pipe In early 2012, the Birmingham Water Works Board (BWWB) ran a successful leak detection program on 7.7 miles (12 km) of 42-inch ...


    By Pure Technologies

  • For Malaysia Water Operator, NRW Leak Detection Program Recognized As Major Success

    At Singapore International Water Week 2016, one of Pure's licencees presented a poster on two acoustic-based technologies (tethered Sahara® and free-swimming SmartBall®) used to locate 674 ...


    By Pure Technologies

  • Influence of cavitation phenomenon on the hydraulic behavior of leaks in water distribution systems

    This paper examines the hydraulic behavior of leakage from water distribution systems under condition of cavitation. For this purpose, an experimental model featuring small (i.e., a fraction of a millimeter) orifice openings was designed and built to simulate idealized cracks in defective pipes. During the tests, water was allowed to flow through the cracks at controlled pressures during ...


    By IWA Publishing

  • Preventing & Thawing Frozen Pipes

    A “how-to” guide on preventing and thawing frozen pipes. As temperatures drop below freezing around the country, it’s important to be informed of the cold weather’s effect on your water pipes. When temperatures are below freezing, pipes in unheated areas are subject to freezing causing messy, and often expensive issues. Just one burst pipe running at 4-8 ...


    By WaterSignal

  • Investigation and risk assessment of a diesel leak: confidential

    Project: Emergency Investigation of a Fuel Leak Client: Confidential infrastructure management company Services: Rapid site characterisation and risk assessment Summary: Detailed risk assessment was used to quantify the environment risks pose by a fuel leak and avoid unnecessary remediation ESI was commissioned to ...


    By ESI Consulting

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