SLPE will provide detailed design for Inch Cape


December 14, 2021

Credit: SLPE

Offshore engineering consultancy SLPE has been awarded a detailed design contract for the wind turbine generator foundations for Red Rock Power Limited and ESB’s Inch Cape offshore wind farm.

Inch Cape asked earlier this year to remove the capacity cap from its consent, allowing it to select the most powerful turbines on the market. The wind farm will be located 15-22 km off the coast of Angus in Scotland, with water depths ranging from 43 to 55 meters.

SLPE delivered the WTG foundation design for Inch Cape in March of this year and, after a period of design optimization, has now secured the detailed design which is expected to begin in early 2022.

“We are delighted to continue our work for Inch Cape,” said Joseph Hilton, Managing Director of SLPE. “After the design phase, we undertook a refinement phase to further optimize our designs for a number of variables and uncertainties. These studies will contribute to the detailed design of the monopiles that will support some of the largest offshore wind turbines on the market today. Inch Cape is also currently the deepest offshore wind farm in which monopile foundations are expected to be deployed. “

Credit: Red Rock

In the meantime, SLPE is supporting Inch Cape with further concept refinement and site investigation support, to inform key project decisions and develop design inputs for detailed design.

The largest monopiles

“With water depths of up to 55m, Inch Cape’s monopiles will be among the largest in the world,” said Nick terry, responsible for the wind turbine substructures. “Being able to demonstrate the feasibility of monopiles in these water depths has enabled the project to achieve significant cost savings compared to jacketed foundations. This was made possible by our in-house iterative design and optimization software, which allows each site-specific monopile design to be individually optimized for structural weight and cost-effective manufacturing.

“Our monopile designs also incorporate an advanced PISA-like geotechnical design, using full 3D finite element analysis and advanced soil constitutive modeling to simulate the behavior of soil structure. This results in greater precision and considerable weight savings compared to conventional pile design methods. approach is delivered in partnership with Geowynd, which complements SLPE with its deep expertise in marine geotechnics.


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