Find the most up-to-date version of DNV-OS-J at Engineering The standard, Design of Offshore Wind Turbine Structures (DNV-OS-J), provides principles, technical requirements and guidance for design, construction . Classification society DNV GL was expected to issue revised given in DNV GL Offshore Wind Guideline , DNV-OS-J and.

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The updated standard which aims to reduce cost and increase safety is now available. The standard, Design of Offshore Wind Turbine Structures DNV-OS-Jprovides principles, technical requirements and guidance for design, construction and in-service inspection ddnv offshore wind turbine structures.

After its launch in it has been widely used in the offshore wind industry.

The updates are focused on reducing costs and increasing safety. Section 9 for grouted connections is rewritten. It is clarifying that the scope is limited to tubular and conical grouted connections in monopile structures oa referring to other standards for grouted connections in other types of structures.


Further, it introduces new design requirements for grouted connections without shear keys. These have been based on recent research including lab-tests and replace previous requirements which have proven inadequate.

DNV along with leading industry participants are currently completing laboratory testing on scale effects of grouted connections with shear keys to provide the industry with improved data and guidance on the use of shear keys in monopile solutions.

Section 11 for corrosion protection is restructured and expanded. It is first stating requirements for which types of corrosion protection shall be applied in the different corrosion zones, and subsequently stating requirements for corrosion allowance, cathodic protection and coating.

Section 12 for transport and installation is rewritten.

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Xnv is providing a more detailed introduction and bringing the standard in alignment with DNV Rules for Marine Operations. Section 13 for inspection is rewritten.

It is bringing the standard in alignment with current practice for the necessary level of inspection j10 large wind farms and giving the owner a choice between periodic inspections and inspections according to a risk-based inspection plan. In order to ensure stakeholders a transparent, cost efficient and unified approach of building wind energy technology, DNV has since taken on the role of developing standards, specifications and guidelines. These documents integrate decades of experience from the offshore industry with in-depth wind turbine knowledge gained from the type certification of large megawatt turbines.


DNV releases updated standard for offshore wind turbine structures – PES – Power & Energy Solutions

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