underwater project Articles

  • Dam security and underwater attacks

    According to DHS (2007) dams provide a wide range of important economic, environmental, and social benefits. These benefits include: recreation, flood control, water storage, irrigation, mine tailings, electric generation, debris control, and navigation (see Figure 1; DHS 2007). Their destruction through intentional attack can largely impact the economy and public safety.  Dam security is ...


    By IWA Publishing

  • Dredging Technology – Underwater Excavation and Construction

    The presence of water is ussualy considered a nuisance in construction, particularly when excavating removing water is common practice. In some cases however, water can be a very useful tool that may simplify things greatly. With the “flooded excavation principle”, the construction site is flooded after the retaining walls have been installed (e.g. sheet pile). When the ...


    By BBA Pumps

  • Underwater Robots Perfect for Power Production

    Underwater exploration, fish farms, dive jobs, marine research, municipal and commercial water utilities are obvious industries for the utilization of Deep Trekker mini-ROVs and pipe crawlers. However another industry that has seen remarkable success integrating underwater inspection robots is energy production. Diverse methods of creating energy provide a number of applications which benefit ...


    By Deep Trekker Inc.

  • Gas monitoring and leak detection in underwater application for the offshore oil and gas case study

    With over 300 sensors and systems sold world-wide and over 35 scientific users publications, Franatech is market leader for underwater methane detection and monitoring. Franatech is a developer and supplier of sensors for detection of gases in water. The company has more than 15 years experience in subsea applications, working with all kinds of sensing technologies. Coming from a scientific ...


    By Franatech GmbH

  • Underground, underwater, under stress: Town of Longboat Key puts SmartBall tool to unusual pipeline condition test

    When much of your critical sewer pipeline lies buried under a bay of shimmering ocean water, the challenges required to assess its condition may seem daunting. That task faced the Town of Longboat Key, an affluent retirement community located on the barrier island of the same name off the west coast of Florida. Sensitive to environmental, health and safety issues, ...


    By Pure Technologies

  • ArmorMax® is Solution for Bank Stabilization in NRCS Emergency Watershed Protection Program, Kissimmee, FL case study

    PROJECT SUMMARY Years of flash flooding and fluctuating water levels in the West City Ditch made for a dangerous scenario. The City of Kissimmee secured NRCS EWPP grant money to stabilize the ditch before catastrophic infrastructure damage occurred, but the budget was too small for full protection with conventional hard armoring. Propex worked with engineers to model slope stability in rapid ...

  • Dam Inspection: A Day at Still Creek Dam

    We’ve been busy lately visiting various municipalities, police forces, aquaculture sites, and water treatment plants showcasing both our portable ROV systems and our new product line, the DT340 Pipe Crawler. One project in particular, took place at the Still Creek Dam in Tamaqua, PA. Cody and Sam packed up the crawler and headed down ...


    By Deep Trekker Inc.

  • Pollution prevention and control, West Wales

    Project Earlier this year, Remediation Strategies were asked to look into the development of a pneumatic barrier for a specific oil spill response scenario.  A pneumatic barrier uses compressed air in an underwater environment to create a vertical ‘bubble barrier’ and a standing wave at the water surface. The purpose of the barrier is to contain a given spillage of ...


    By Remediation Strategies Ltd.

  • Gabion mattress deployment at former manufacutured gas plant site case study

    Project: Island End River Sediment Cap Location: Boston, MA Products: Organoclay Reactive Core Mat? Triton Marine Mattresses Background: The project is situated on a former manufactured gas plant (MGP) site located adjacent to the Boston Harbor. Previous remedial work included dredge and disposal in CAD cell and cap. ...


    By CETCO

  • Chile establishes the largest marine protected area in the Americas

    Earlier today Chilean president Michelle Bachelet announced the formation of Nazca-Desventuradas Marine Park — the largest marine protected area in the Americas. Located more than 850 kilometers (530 miles) northwest of Santiago in ...


    By Ensia

  • Deep soil mixing at the Jackson Lake Dam

    Abstract: The Jackson Lake Dam was constructed in 1917 in the Grand Teton National Park near Jackson, Wyoming. The dam was a hydraulic fill placed on a natural alluvium and outwash foundation. The Bureau of Reclamation (Burec) determined that the dam and its foundation would be susceptible to liquefaction and failure during a potential earthquake; a series of contracts was let to remove and ...


    By Geo-Con, Inc.

  • Nuclear power reactor Unterweser in Lower Saxony, DE - Case Study

    On 29th of September 1978 the pressurised water reactor Unterweser went on stream and was the most powerful reactor in the world. The Nuclear power reactor Unterweser (KKU - Kernkraftwerk] had an electrical output of 1410 MW. In the course of the energy turnaround, the reactor was turned off on the 18th of March 2011 and completely shut down by the operator E.ON Kernkraft GmbH in June 2011. ...


    By AMEX GmbH

  • Climate resilience (with oysters)

    Earth’s rising temperatures mean more glacier melt, sea-level rise and severe weather, and this translates to heightened threats for coastline communities. In response, SCAPE Landscape Architecture — powered by President Obama’s Rebuild by Design Initiative — has proposed an innovative way to protect coastlines that ...


    By Ensia

  • Everett, WA - ERH under active storm water retention basin - Case Study

    First below water ERH remediation of TCE in active stormwater retention basin Project Summary TRS Group, Inc. (TRS) worked as a sub contractor to Landau Associates on this unique ERH remediation project. This project represents the first of its kind using ERH for site remediation underneath an industrial storm water retention basin full of water. The ...


    By TRS Group, Inc.

  • Great Lakes need great Data Buoys

    One recently finished project was performed by the University of Wisconsin and has comprised the depolyment of two data buoys which are both furnished with a multifunctional Lufft WS501-UMB. These weather ...

  • Equipment and technology review: rocscience tunneling applications

    Allen Gwynnes Pumps– name resurrected With a design and manufacturing history stretching back 150 years, Allen Gwynnes Pumps, a name long associated with the manufacture of large, performance critical pumps, is once again an active force in the market place, operating from its new head office location in Middlesbrough, UK. The company was acquired by NEI during the 1970’s, and then became part ...


    By Rocscience Inc.

  • Shredding at sea case study

    The 'Solitaire'of theAllseas Group is the world’s largest and most modern offshore pipe-laying ship. It helps to lay an average of five kilometres of underwater pipeline every day. Synthetic end caps accumulating as waste will be shredded by a WLK 10 shredder from WEIMA Maschinenbau GmbH while still on the ship in order to sell the valuable raw material once on land. The 368 m long and 40 ...


    By WEIMA

  • NAUE shores up Schwarze Elster´s detour case study

    Lusatia is a region in Germany and Poland. The original  meaning of Lusatia is something along the line of “swampy, wet  meadows.” Lusatia is separated into two parts that, in terms of the landscape, are completely different: Upper Lusatia and Lower Lusatia. In the Northwest, Lower Lusatia is bordered by the Fläming ridge; and in the West it’s bordered by the ...


    By NAUE GmbH & Co.KG

  • New LWT system improves safety for workers dredging radioactive materials

    Problem: Cleanup crews wanted to dredge radioactive sludge from hazardous waste pits without releasing contaminants to the environment. Solution: A remote-control system encloses the radioactive material during dredging and keeps workers at a safe distance. The Weldon Springs, Mo. Superfund site and remedial action project has four pits containing low-level radioactive raffinate debris and ...

  • 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

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