Wind turbine yaw ring repair project in France

Since 2004, our technical team has been developing equipment for the recovery of yaw rings in wind turbines.

  • Since then, we have been improving our technical solutions and developing new on-site repair systems for different types of technologies and platforms.
  • We have used finite calculations to study the stress behavior of the transmission system.
  • We have analyzed different grafting methods, typologies, and manufacturing materials.
  • We have prioritized the durability of the installed grafts over a purely cosmetic repair with a very short lifespan.

Our method uses precision machining to repair the yaw ring directly on-site, saving you the enormous costs of a complete replacement.

Our specialized portable machine tools mean there’s no need to replace the entire yaw ring, avoiding the costly, time-consuming, and risky process of rotor and nacelle disassembly.

Operated by our technical experts, the portable tools use a fine-tolerance repair method to precisely remove and insert the new machined yaw ring teeth. This on-site repair eliminates the need for the costly, time-consuming, and potentially damaging disassembly required to replace the entire yaw ring gear.

With iZanda’s on-site yaw ring repair, you gain a host of benefits:

  • REDUCED DOWNTIME
    We carry out on-site repairs, offer tailored solutions, and respond quickly to minimize the downtime of your wind turbines. With minimal downtime, turbine performance increases significantly.

  • TOTAL COST SAVINGS:
    There’s no need for new components or cranes, and our method requires less labor and logistics compared to a complete bearing replacement. Our repairs minimize costs, as the yaw ring is repaired, not replaced.

  • LONG-LASTING RESULTS:
    After hundreds of repairs to date, our repairs deliver precise and long-lasting results.

FAQ:

Q: Is it necessary to disassemble the wind turbine for this repair?

A: No. The repairs are performed up the tower without the need to disassemble large parts or components of the wind turbine. This is one of the main advantages of our method, as it saves significant time and costs while avoiding potential damage from disassembly.

Q: What is the process for repairing a broken yaw tooth?

A: The method, developed by our company, iZanda, involves using handheld machine tools designed to fit in the tight space surrounding the yaw ring. The process focuses on repairing the teeth using welding, machining, and/or replacement methods. Precision machining and adjustments are provided, restoring the yaw ring’s full functionality.

Q: How long does it take to repair a yaw ring?

A: Repair time depends on the number of damaged teeth, tower type, tooth treatment, and other factors, such as accessibility to the wind turbine. However, given the experience and expertise of our technicians in these jobs, we can assure you that the work is completed as quickly as possible without compromising the quality of the results or the safety of the operators.

Q: Where do you offer this service?

A: We offer our yaw ring repair service worldwide for both onshore and offshore wind turbines.

Q: How much does it cost to repair a yaw ring?

A: Our on-site yaw ring repair service is significantly more cost-effective than a complete replacement. The exact cost will depend on the specific damage and the scope of the project, but it will be a fraction of the cost of replacing the entire ring.