Wind turbine inspections

Independent, objective inspections of onshore and offshore wind turbines keep all stakeholders in the picture.

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Inspecting the condition of wind turbines is vital at various stages of the project lifecycle. It allows all interested parties to reassure themselves of the quality of the turbine’s fabrication, maintenance and performance. In some countries, regular inspections are a legal requirement; and many insurance companies insist on them when issuing a policy.

DNV offers a complete range of inspection services for onshore and offshore wind turbines and their components. Our inspections provide completely objective and independent information on:

  • The condition of wind turbines and assets
  • The performance of maintenance and repairs

This helps you reduce risks, reassure stakeholders and meet regulations.

Inspection at any stage

Inspections can be carried out at any point during the fabrication, commissioning and operation of the equipment. Typical milestones requiring inspections include:

  • Manufacturing of components
  • Storage and / or transport of equipment
  • Assembly of assets
  • Commissioning the project
  • Monitoring project milestones that trigger financial rewards to stakeholders
  • Assessing asset performance and condition during operation
  • Planning and evaluating maintenance
  • Investigating damage
  • End of warranty
  • Extending the lifetime of a wind farm.

Inspections can cover all components of wind power generation systems including the rotor, nacelle, tower, foundation and electrical system. We can inspect both onshore and offshore facilities – including offshore substation platforms.

Reliable objectivity

All our inspections are carried out by highly qualified inspection engineers with many years of experience in the wind energy sector. They are fully trained on all relevant safety, measurement and operational topics, allowing them to work in a wide range of locations and weather conditions, and with different equipment designs.

We carry out inspections around the world. Renowned for our independence and objectivity, we share inspection results with owners, investors and manufacturers, so all interested parties can have full confidence in the project.

Key services

  • Take-over inspection of a wind turbine

    Reviewing the quality of the work undertaken during installation/commissioning and setting comprehensive punch lists ensure a seamless hand-over to the operators.

  • End-of-warranty inspection in a wind turbine nacelle

    Detailed assessment of the condition of the asset and performance of the O&M contractor, identifying defects to allow operators/owners to better manage warranty issues and optimize post-warranty O&M costs.

    Detailed inspection to assess component health, such as gearbox borescope inspections, lubricant sample analysis.

  • Due diligence inspection of an onshore wind farm

    Fast turn-around and detailed inspections on main components to support acquisition and investment mechanisms by identifying hidden costs related to technical issues.

  • Life extension inspection of a wind turbine gearbox

    Targeted, risk-based inspections to inform life assessment and support strategy decisions and budget forecasts for extended life.

    Specialists assess structural integrity through close-range visual inspections and testing, including targeted non-destructive testing.

  • Failure investigation of a broken wind turbine blade

    Rapid response to gather critical information for failure and root cause analysis, supporting operators and insurance companies with independent technical assessment.

Wind turbine inspection
Take-over inspection of a wind turbine
End-of-warranty inspection in a wind turbine nacelle
Due diligence inspection of an onshore wind farm
Life extension inspection of a wind turbine gearbox
Failure investigation of a broken wind turbine blade

All services

Explore our full service portfolio for the wind industry

Contact us

James McLean

James McLean

Inspections Lead, Renewables Projects