tunnel inspection Articles

  • Tricky track at the Tunnel case study

    OPEC solves Channel Tunnel pollution problem British Rail Network 'SouthEast' were faced with an unusual problem at a project they were handling for Rail Freight. At the new freight inspection yard at the UK end of the Channel Tunnel, which is designed solely for electric traction, the operators will initially be using heavy diesel locomotives. When stationary these ...

  • Divers install eccentric plug valve in reservoir tunnel

    A team of specialist divers – working in a cramped, water-filled tunnel 20 metres beneath the surface of a reservoir – has just completed installation of an eccentric plug valve to control water flow.The valve and associated equipment has been supplied to United Utilities by Viking Johnson (http://www.vikingjohnson.com), a world leader in the supply of pipe joints ...


    By Viking Johnson

  • Ground Penetrating Radar Evaluation of Concrete Tunnel Linings

    Abstract - Ground penetrating radar was used to map tunnel lining condition and locate concrete deterioration and voids in a continuous and non destructive manner. GPR surveying of Kapoor Water Supply Tunnel, Victoria, Canada was carried out with a 1000 MHz Sensors and Software Ltd., Conquest system mounted on a custom built cart. This 8.8 km long 2.3 m diameter concrete lined circular tunnel was ...


    By SewerVUE

  • An inflatable tunnel seal stops flooding of world`s largest undeveloped uranium mine

    The Cigar Lake Mine, located in the Athabasca Basin of Northern Saskatchewan, Canada, is sitting on the world's largest undeveloped high-grade uranium deposit in the world. Operated and majority-owned by Cameco Corporation, Cigar Lake is expected to eventually provide more than 10% of the world's mined uranium. But to extract the uranium ore, Cameco has to overcome significant technical ...


    By Petersen Products Company

  • Combined application of Pipe Penetrating Radar and LIDAR for large diameter pipe inspection

    Abstract: Pipe Penetrating Radar (PPR) is the underground in-pipe application of ground penetrating radar (GPR), a non-destructive testing method that can detect defects and cavities within and outside mainline diameter (>18 in./450mm) non-metallic (reinforced concrete, vitrified clay, PVC, HDPE, etc.) underground pipes. Light Detection and Ranging (LIDAR) has become an accepted method for ...


    By SewerVUE

  • Multi-sensor inspection robot shows benefits of pipe penetrating radar - Case Study

    Pipe penetrating radar (PPR), the in-pipe application of ground penetrating radar (GPR) is one of the most promising quantitative pipe condition assessment technologies to emerge in recent years. With most of the underground pipe infrastructure reaching the end of their design life there is a need to provide measurable data in order to establish the extent of rehabilitation required or the timing ...


    By SewerVUE

  • Pumps for new housing in Stockholm

    Grindex new series of dewatering pumps are designed to last three times longer in abrasive applications compared to previous pump generations. In this case study from Sweden, they are up for a tough test. One of the critical factors for the building of 3,000 new homes within a few years are the seven submersible dewatering pumps from Grindex installed deep in the bedrock below south Stockholm. ...


    By Grindex Pumps

  • Software implementation of the harmonoise/imagine method, the various sources of uncertainty

    ABSTRACT Uncertainty in noise prediction is usually thou ght of being related to the accuracy of the  input data and the accuracy of the prediction method. However documentation of the  prediction standard that contains ambiguous algorithms and unclear definitions of  geometrical calculation data will also lead to uncertainty in software implementation. The  past ...


    By Softnoise GmbH

  • Railway warning and protected system – Bridge Demolition

    So the in-situ stress sensors in the concrete could measure the load changes and stress changes with a building damage after eniem earthquake immediately on-line. The alert with GPS item data is spread world-wide over the Internet. The combination also for everyone accessible maps of the world can facilitate the management after disasters substantially. So fast data are available over destroyed ...


    By IBJ Technology

  • In-situ stress measurement in concrete - a component for the geolocation of the destruction with earthquakes

    So the in-situ stress sensors in the concrete could measure the load changes and stress changes with a building damage after eniem earthquake immediately on-line. The alert with GPS item data is spread world-wide over the Internet. The combination also for everyone accessible maps of the world can facilitate the management after disasters substantially. So fast data are available over destroyed ...


    By IBJ Technology

  • Getting ready for a larger panama canal - assessing a critical large diameter force main

    Abstract Opened in 1905, the Government Cut is a manmade shipping channel between Miami Beach and Fisher Island, which allows better access to the Port of Miami in Miami, Florida. Before the Cut was established, a single peninsula of dry land stretched from what is now Miami Beach to what is now Fisher Island, and boats destined for the port at the mouth of the Miami River had to pass around ...


    By Pure Technologies

  • Milford Haven Gas Pipeline

    Huckbody Environmental provided the Environmental Manager to the Client, National Grid for the Milford Haven Gas Pipelines Project, from 2006 to 2008. The role involved site based supervision of all Contractors for 220km of 48 inch/1220mm gas pipeline; document approvals; Government Agency, National Park & NGO liaison; HSE site inspections and audits; contract compliance/assurance to ISO ...


    By Huckbody Environmental

  • Water Charges & Local Authorities

    This is a piece I wrote a while back, I think it has significant relevance now that we are being charged for water and septic usage… Patrolled by the Guilty, Will It Be Solved by the Ecological Entrepreneur? Local Authorities are the largest abusers of wastewater discharge in the country; but will they soon have the ability to force the public to conform to a standard they flaunt ...


    By BioPro Ireland

  • The Low Down on Pipes: A Look at Municipal Water

    We manufacture our portable remotely operated vehicles (ROVs) and pipe crawlers for a variety of different industries and applications. Due to their robust design and versatility, Deep Trekker products have proven to be the ideal tools for many professionals and ...


    By Deep Trekker Inc.

  • Integrated SUDS scheme overcomes challenges at low-lying manufacturing facility

    The sustainable drainage system developed by ACO Water Management for Kybotech's new timber processing facility in Nottinghamshire fully integrates a number of SUDS processes to successfully overcome the site's many challenges. Situated in a restricted low-lying position close to the watertable, the system first removes all oil deposits and sawdust carried in run-off from both the handling yard ...


    By ACO Group

  • Atlanta upgrades to InfoWorks CS to aid environmental program

    The City of Atlanta, Georgia, in the USA, has purchased InfoWorks CS to help it meet stringent US Environmental Protection Agency (EPA) and Georgia State Environmental Protection Division (EPD) requirements for discharge of its wastewaters to the Chattahoochee River. The Chattahoochee, one of the smallest rivers in the US supplying a metropolitan area, provides 80% of the city’s water needs. ...


    By Innovyze

  • Gas Safety in Confined Spaces

    Introduction An offshore worker ensures a vessel is safe to enter; a plant manager enters a small plant room; a contractor inspects the lining of a sewage pipe.  All these personnel face common dangers, despite working in widely different industries.  Gas-related injury poses a serious threat in any confined space where the free movement of air is limited. A confined space ...

  • Odor Control Advances at Composting Facility

    The Rockland County (New York) Cocomposting Facility began operations in February, 1999, processing biosolids from the five publicly owned treatment works (POTWs) in the county. The Rockland County Solid Waste Management Authority (RCSWMA) owns the facility, but contracted with Waste Management of New York to design, build and operate (DBO) the 110 wet tons/day agitated bin composting facility ...


    By BioCycle Magazine

  • Closures of mine a new challenge for Romania

    AbstractThe mining activity is one of the oldest activity in Romania, dating from the year 100 B.C. The gold and silver ores represented one of the riches of our country. In time the economic content of metals diminuend, and the ore mines become non profitable. Due to this situation the best option of the State was the closure and ecological rehabilitation of the mines.The steps for the ...


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