Penstocks Articles

  • 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

  • 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

  • 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 LTD.

  • Lake Dorothy Hydroelectric Dam Completion Benefits Alaska Residents

    The Lake Dorothy Hydroelectric Project, located near Juneau Alaska, was begun in 2006 and completed in 2010.  Karl Vander, of North Pacific Erectors, was the Project Manager.  North Pacific Erectors, a General Contractor for ...


    By SRS Crisafulli, Inc.

  • Rotork actuators with profibus

    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 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.

  • 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

  • 1997 IFAI award devil Canyon hydroelectric power plant, San Bernardino, California

    Constant demands for water and electricity in heavily populated areas in California prompted the Devil Canyon Power Plant project. Constructed from 1969 to 1974, the power plant is located at the San Bernardino Mountains near the mouth of Devil Canyon. With two pipelines carrying water from Silverwood Lake, an elevation drop of almost 1500 ft (460 m) between the lake, and four Pelton wheel ...


    By Presto Geosystems

  • 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

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