Proof of Concept
Build and test of early prototype and testing in Dublin Bay.
Technology
We have developed technology to reduce the cost of floating offshore wind
The LRD is a subsea component of an offshore mooring system targeted at the floating wind market.
The LRD delivers cost reduction in offshore mooring systems by optimising the mooring system to allow a floating platform to move in compliant response to waves.
It’s fully scalable and tuneable to deliver the customer’s specific mooring response requirement. The component is manufactured using basic low-cost materials such as steel and concrete which have a demonstrated track record in the marine environment.
Benefits
Up to 15% LCOE reduction
Greater Storm Protection
Up to 80% Reduced Mooring Loads
Tailored Response
Reduced Fatigue Load
>25 Year Design Life
Development Timeline
We have been involved with many exciting and challenging industry first projects over the past decade.
Proof of Concept
Numerical Model
Tank Testing
Prototype Design
Ocean Testing
Certification
Demonstration
Numerical Modelling
Analysis and design of the mooring system and LRD was undertaken using hydrodynamic software, Orcaflex. The LRD was modelled in Orcaflex using connected 6-dimensional buoy elements to represent the buoyancy, weight, and hydrodynamic performance.
Component Tank Test
Validation of numerical modelling for the Floating Offshore Wind (FOW) system was delivered through physical prototype testing in the deep ocean basin at Lir, Ireland’s National Ocean Test Facility.
Prototype Design
Mechanical Design, structural analysis, build and testing of quarter scale prototype. Preparation for offshore testing.
Ocean Testing
A quarter scale LRD was designed and built for the purpose of ocean testing. The LRD accumulated 1200 hours of continuous operation and the deployment period coincided with Hurricane Epsilon and Storm Aiden, yielding high quality data across all phases of the LRD response curve.
Certification
Technology Assessment of the Load Reduction Device was carried out by DNV, a leading third-party certification body leading to issue of the Statement of Feasibility in accordance with DNVGL-SE- 0160. The mooring design and data acquisition for the 1⁄4 scale prototype deployment of Dublin Offshore’s Load Reduction device was certified in accordance with IEC TS 62600-10.
Demonstration
The next step for the LRD development is to undertake a suitably sized demonstration deployment in the mooring system of a full scale Floating Offshore Wind Platform.
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