Updated Guidline Note for Floating Offshore Wind Turbines (FOWT)



Jun. 1 2018

In order to facilitate market developments, Bureau Veritas is working on updating a Guidance Note for Classification and Certification of Floating Offshore Wind Turbines (NI572).

The previous edition, published in October 2015, drew on experience gained from various research programs dedicated to Floating Offshore Wind Turbines (FOWT).

Recently, Bureau Veritas was awarded contracts for pilot farm project certification and design evaluation certification (as per the IEC 61400-22 standard), including Provence Grand Large and Les Eoliennes Flottantes du Golfe du Lion in the Mediterranean, and Groix & Belle-Île in the West Atlantic. These projects are now well on track, and the commitment and professionalism of our certification team has allowed us to consolidate our expertise in this growing activity.

Since the technology involved is now more mature, the updated Guidance Note responds to industry demand and sets out the requirements to address the technical and operational challenges specific to the floating offshore wind sector. Technical requirements cover, for example: corrosion protection with a full maintenance plan; stability, taking into account restoring forces due to the mooring lines; description of the design load cases applicable for assessment of mooring and floaters; and detailed methodology to assess the structural strength of floaters.