Atkins designs on Triton Knoll

Posted by Web Master 6 on December 5, 2017 11:20 AM EST
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UK engineering consultancy Atkins is to design the monopile foundations for Innogy’s 860MW Triton Knoll offshore wind farm off the UK east coast.

Atkins has been subcontracted by the foundation supplier – a joint venture between Smulders and Sif – to design 90 monopiles for the MHI Vestas V164-9.5MW turbines and two structures for the offshore substations.

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New Concept for Offshore Wind Turbine Jackets

Posted by Jeff Keever on November 15, 2017 10:55 AM EST
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A new concept for a one-hundred-year minimum life concrete jacket foundation has been designed for offshore wind turbines.

Andy Filak, Principal of AMF Concepts, says that one of the major hurdles to the development of offshore wind farms has been the development of reliable foundation systems with long life and ease of installation in deepwater. Current concrete technology is not robust enough for the long-term exposure that is experienced in an ocean wind farm, he says, and steel technologies require complicated shoreside construction and at-sea installation involving multiple large crane barges and anchor handling tugs.


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All 60 foundations have been installed in the seabed of the Baltic Sea ahead of schedule. The monopiles, which weigh around 1,200 tons, were tied up to 40 meters deep into the seabed. One success factor was the three-dimensional seismic investigation of the subsoil prior to installation.

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Hywind Scotland, the world’s first floating offshore windfarm, has started to deliver electricity to the Scottish grid, having been formally opened by the First Minister of Scotland, Nicola Sturgeon.

The 30 MW windfarm, operated by Statoil in partnership with Masdar, is 25 km offshore Peterhead in Aberdeenshire, Scotland.,worlds-first-floating-offshore-windfarm-delivers-power-to-the-grid_49585.htm

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German energy company Innogy SE (ETR:IGY) said Tuesday it has acquired the 50% stake of Norwegian state-owned utility Statkraft in the 860-MW Triton Knoll offshore wind farm project in the UK.

"With full control over Triton Knoll, we will now develop the project further to final investment decision at our own discretion", says Hans Bünting, COO Renewables of innogy

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Despite inroads by jackets and gravity-base foundations, monopiles will remain the foundation of choice for offshore wind turbines for the foreseeable future, according to a new report.

In Offshore Wind Foundations: a European Overview, Renewables Consulting Group (RCG) said that, by 2022, it expects the fully commissioned offshore wind fleet in Europe to approach 6,000 foundations, and that the greatest number of these will be monopiles rather than jackets or gravity-base foundations.,evolving-monopiles-will-remain-foundation-of-choice-in-medium-term_49216.htm

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Trelleborg Completes Leg Can System Offering

Posted by Web Master 6 on September 21, 2017 10:55 AM EDT
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Trelleborg’s engineered products operation has added to its portfolio of offshore floatover solutions with a custom designed skirt pile gripper (SPG).

Trelleborg’s SPGs can be designed to have a holding capacity of between 500MT and 3000MT and are compatible with all offshore oil and gas and wind farm HVDC jackets. The DNV GL-certified units can work at operating pressures of 200 bar and higher, and water depths of up to 250 meters.

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ABS has completed a design review for the University of Maine-developed VolturnUS foundation for floating offshore wind turbines.

The patented VolturnUS, developed by the Advanced Structures and Composites Center at the University of Maine (UMaine), is based on a concrete four-column semi-submersible.,design-review-paves-way-for-tests-of-innovative-floating-foundation_49180.htm


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Comparing floating foundations for offshore wind farms

Posted by Jeff Keever on August 17, 2017 8:15 AM EDT
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Editor’s note: An earlier version of the Ocean Going Deck Barge and its operation is described here:  AMF Concepts has revised its design to use a catamaran for the barge to simplify buoy and WTG construction and deployment along with greater stability.

 U.S. deepwater offshore floating wind turbine foundation platforms are taking too long to develop. We need them now. One design is readily available.

Andrew Filak / AMFConcepts

At present, 58% of the U.S. population lives in coastal areas. The National Renewable Energy Laboratory estimates there is potential for 4,233 GW of clean energy off the coast mostly in deep water. The figure is four times the capacity of the U.S. electric grid. The first fixed-bottom offshore wind farm in U.S. waters is now capturing this clean energy off the coast of Rhode Island. This project is now part of the 50 offshore wind farms operating worldwide.


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