Marine Power Systems
– Mooring & Anchor Study
Tadek and Tardra worked collaboratively to design a floating wind mooring system from initial conceptual design and geotechnical assessment through to operational installation sequencing and methodology, commercial evaluation and operational risk assessment.
THE PROBLEM/CHALLENGE
Our client recognised the variability of soil characteristics across their proposed offshore wind site.
Because of this a more detailed understanding of the mooring & anchor options available, while considering to the ability to satisfy a full field with the lowest number of anchor types and associated equipment was required. The resulting requirement was to develop a robust risk and operationally focussed approach to anchoring the floating foundation using the simplest commercial and contractual T&I model.
THE SOLUTION
The solution involved a multi-staged approach, firstly processing the geotechnical variability across a site to define the viable anchor designs based on driven or drilled piles or bespoke anchoring solutions.
From which a full risk and commercial evaluation was conducted from the engineering and build of the anchors through to vessel, installation spread and deck layout definition, offshore support services, and associated storyboards and operational sequencing.
Where possible, combined installation approaches were employed to utilise deployed equipment across different anchor designs to enhance installation confidence at marginal locations.
In parallel a market study was conducted to evaluate the requirements against available vessels and assets to inform the overall project timeline from an innovation, availability, early commitment and constructability standpoint.
THE IMPACT
As a result of the work undertaken, our client was able to produce a detailed commercial dossier of their foundation.
This enabled T&I contractors and field developers to fully understand the operational and commercial strengths of their design, the ability to anchor it using already-available proven methods, vessels and equipment and the robustness of the resulting installation. This optimised the allocation of risk in the field of floating wind where project success, reliability and client confidence is heavily driven by reducing the number of innovation-based unknowns.
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