penstock Articles

  • An inflatable plug works better than bypass pumping when closing off a 60-inch penstock

    When Brian Simon, a project manager at Grace-Titan DVBE (based in Redding, California) first looked at the Potter Valley Bypass job it looked difficult, but straightforward. Grace-Titan was being asked to remove a section of the penstock that supplies Pacific Gas & Electric's (PGE) Potter Valley hydroelectric plant and install a Y-branch. But that meant that the five-foot diameter penstock ...


    By Petersen Products Company

  • Rotork valve actuators at hub of automated flood alleviation scheme - Case Study

    Overview An extended scope contract performed by Rotork Site Services has successfully delivered full automation of a flood alleviation scheme protecting the historic town of Cardigan in West Wales. The project involved replacing unreliable actuators from another manufacturer, installing a PLC control cabinet and interfacing with the existing river level sensor and telemetry system. ...


    By Rotork

  • Permanent Multipath Clamp-On Transit Time Flow Meter

    For many years now, ultrasonic flow measurements with "wetted" sensors have been a well established procedure to measure discharge in big pipes in the field of hydro power plants. A lot of research studies show that very precise measuring results can be achieved, under the provision of correct application and consideration of diverse ancillary conditions. Depending on the flow conditions and the ...


    By HydroVision GmbH

  • Rotork actuators with profibus - Case Study

    Introduction Rotork IQPro intelligent electric actuators with Profibus two-wire digital control provide an adaptable, reliable and economical solution for automated valve monitoring and control, as illustrated by examples in the UK water and sewage treatment industries. Two recent projects undertaken by Wessex Water serve to illustrate the benefits of adopting Profibus-enabled ...


    By Rotork

  • Kijlstra leaves the competition high and dry on flood alleviation scheme

    Kijsltra provides precast drainage solution For some people, the widespread floods of summer 2007 were a foretaste of the kind of natural disaster that results from man-made climate change. For many in the water industry, it was also a stark reminder of how urgently we need to upgrade our water infrastructure. One of those areas worst hit by the 2007 floods was Wakefield, West ...


    By Kijlstra Precast Ltd.

  • Kijlstra precast units speed up Kingsnorth development

    Pre-cast concrete headwalls by specialist drainage manufacturer Kijlstra have helped civil engineering contractor Volker Fitzpatrick minimise costs and reduce construction times on a business park development in Kent. The Kingsnorth Commercial Park, a 115 acre greenfield site on the Isle of Grain, is being developed by property firm Goodman to provide up to 2 million sq ft of industrial and ...


    By Kijlstra LTD.

  • Wallingford solutions enable an integrated approach to modeling

    Of the many advantages to Wallingford Software’s InfoWorks suite of solutions, one that is particularly valued in today’s demanding modeling environment is their reputation as the gold standard for integration. The solutions allow one interface to answer a wide range of questions, rather than requiring a user to laboriously work through a range of modules or packages. Such key but separate ...


    By Innovyze

  • Municipal waste water treatment plant case study

    A municipal WWTP in the North of England was experiencing significant problems with accumulations of FOG in the Wetwell at the head of the treatment plant. The FOG would form a solid cap over the well several feet thick. This put considerable strain on the pumping gear, interrupted the performance of the float switches and required regular manual intervention from the staff. High costs were also ...


    By Cleveland Biotech Ltd.

  • Model success for Melbourne Water

    Untitled Document Melbourne Water ...


    By Innovyze

  • What rural Alaska can teach the world about renewable energy

    I flew into Unalakleet, Alaska, on a late fall day. With about 700 people, Unalakleet is large by rural Alaska standards and serves as a regional hub. The village is located on a sandy spit of land where a clear river meets the turbid water of the Bering Sea. Out the plane window the sun shone bright, glittering off the wind-tossed whitecaps of the sea. To the east, the rolling Nulato Hills, clad ...


    By Ensia

  • Sludge Blanket Level Detection – making new process opportunities possible

    Much Pulsar's Self-Cleaning Viper Sludge Sensor of the demonstrating the effective maintenance-free solution. discussion around the way we deal with sewage sludge – the way it is moved around the process, the bellmouth valves and decant processes, the downstream treatment of the liquors, important issues around TOTEX and discharge Compliance, plus more recently the ...

  • How a Specialized Automatic Control Valve Solved Flooding

    The Colombian area of Antioquia creates much of its clean power from hydropower plants along the Guadalupe River. The Guadalupe IV hydroelectric plant generates power with three vertical axis turbines that discharge water below the river level. To prevent flooding, however, the plant needed a solution that ensured the ejector ...


    By Singer Valve Inc.

  • Horse Mesa Dam, Units 1 - 4 Intake Repairs - Case Study

    Global Diving & Salvage, Inc was contracted by Salt River Project (SRP), operator of Horse Mesa Dam, located 65 miles northeast of Phoenix, AZ, to provide project management and diving services to make repairs of Units 1 through 4. The work on Unit 4, located in 160 feet of water, and on Units 1, 2, and 3, located in 260 feet, necessitated the use of saturation divers. ...

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