ABS Classes World’s Biggest Floating Wind Turbine

The largest floating wind turbine in the world, an 8.4-megawatt (MW) ABS-classed offshore wind turbine, is about to be installed.

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At the Forefront of Global Offshore Wind

With more than 70 years of experience in the offshore sector, we understand owners' and operators' need to enhance operational efficiencies with sustainable energy solutions. In 2012, ABS certified the first semisubmersible offshore wind turbine WindFloat 1. Since then, ABS has remained a trusted advisor by providing classification, and independent verification and certification services for offshore wind projects globally. 



Currently, ABS remains at the forefront of technology assistance to the growing floating offshore wind power industry, working with designers and operators to identify risk and evaluate data-driven risk and reliability solutions for these new installations. ABS has been instrumental in the formulation of global standards for wind platforms, notably working with the International Electrical Commission, IEC, on global standards for the design and fabrication of floating wind installations. ABS is also heavily involved in the American Wind Energy Association (AWEA)’s Offshore Compliance Recommended Practices initiative, tasked to develop an ANSI standard for the U.S. Offshore Wind Farms.

Leading Classification Services

In 2011, ABS published the ABS Guide for Building and Classing Bottom-Founded Offshore Wind Turbine Installations followed by the ABS Guide for Building and Classing Floating Offshore Wind Turbine Installations in 2013.  ABS also published the Guidance Notes on Global Performance Analysis for Floating Offshore Wind Turbine Installations, as technical guidance in addition to applicable industry standards and regulations. These documents offer the necessary direction for the development of offshore wind turbine support structures to ensure regulatory compliance

ABS can provide preliminary planning and advice (PPA) in advance of the project certification process. Our subject matter experts help clients explore ideas and provide technical resources to support the client's project team with document and drawing reviews.

Our engineers work with the client's designers to maintain a systems perspective at the preliminary design stage and verify that risks, inconsistencies, and ambiguities are identified. During the design review process, we provide feedback using design query notes for traceability purposes.

ABS can provide verification services on system level as well as component level to verify the feasibility or readiness level of a concept. ABS New Technology Qualification services are based on the ABS Guidance Notes on Qualifying New Technologies, giving vendors and end-users a clearly defined approach to confirm new technologies perform intended functions in accordance with defined performance requirements. The guidance notes also provide details regarding the required submittals and key interaction points with ABS during the new technology development

ABS Approval in Principle Services are based on the ABS Guidance Notes on Review and Approval of Novel Concepts providing our clients with an independent verification on their concept and a path for classification / certification of their design. This service also demonstrates project feasibility to potential project partners and regulatory bodies. Clients have an option to request an AIP at an early concept design phase or in later design phases.

ABS will review the detailed design of the wind turbine support structures as well as mooring, mechanical and electrical systems and verify that the wind turbine generators (WTG) type certificate meets the site-specific conditions at the planned offshore location.

ABS conducts inspections during the fabrication of the floating support structure and mooring. ABS will issue approval based on design verification, evaluation of quality control, testing, and measurements.

To minimize the risks associated with installation, ABS surveyors will verify conformity with the design basis requirements. Our engineers will confirm that the loads on the structure and mooring are within the limits of the design envelope during transportation and installation.

ABS will review commissioning procedures. Since the floating platforms may have crews present for ongoing maintenance and operations, ABS surveyors will verify personnel safety features, including checks of operational readiness for lifesaving equipment and escape routes.

To verify that the required standards are maintained throughout the lifetime of the floating wind turbine, ABS will perform periodic surveys and inspections of the floating support structure as well as mooring, mechanical and electrical systems. These periodic surveys will carry out a detailed scope of work to confirm to that the floating wind turbine continue to comply with the approved design specifications..