Stages of inspection

Inspections are necessary from pre-commissioning through to end of warranty inspection 

Complete Winds’  Pre Commissioning through to End of Warranty  Inspection Program  is designed to assist an owner in   the execution of a well defined series of proactive  actions aimed at insuring that all of the necessary steps have been taken during the delivery, erection and initial warranty periods to detect any conditions that might adversely affect the long term performance of a turbines blades or might impact negatively on the turbines gear box or operating performance.

Such inspections supported by complete comprehensive reports will allow you to address any deficiencies with the OEM before signing off and to seek adequate assurances that any defects will be corrected.

During Manufacturing

Economic times are tight and the goal for every company is to stay in business. Often times the quality of any product takes a back seat to production. Complete Wind Corporation believes that good quality ultimately costs less than poor quality. We embed inspectors into the blade manufacturing facility to ensure that material specifications are met, that work instructions are adhered to, and that all stated tolerances are met. This will help to mitigate many of the problems that have been seen on assembled turbines in the last 2 or 3 years because blades that do not meet specifications, are not shipped to your site. 

After Delivery and During Installation

Wind Turbine Blades are large and not easily transported or handled. Although every effort is made by shipping and crane companies not to damage product, it can happen. Sometimes the damage is only scratched paint; sometimes the damage is more structural in nature and requires significant repair. Regardless, it is important to document and repair all damage because even the smallest scratch can ultimately lead to large issues in the future.  

Complete Wind will document repairs and maintain records to support any repair warranty issues or life-time failures.

End of Warranty

A complete internal and external review of blades prior to the end of warranty, will ensure that serial problems are identified and that defects caused by poor quality manufacturing do not spread.  

Complete Wind will provide technical support to the owner/operator in the presentation of inspection results with the turbine manufacturer.

Post Warranty

Once blades are off warranty, it's important that they undergo an annual inspection. The coating of the blade plays an important roll in making sure the blade reaches its intended life expectancy. If problems are caught early, repairs can be scheduled pro-actively vs reactively. As well as inspecting for coating issues, aerodynamic features should also be inspected.


Complete Winds’  Post Warranty  Inspection and Maintenance Program (PWIM) is designed to assist an operator in  the management of a well defined series of proactive and reactive actions aimed at maximizing the performance of a turbines’ blades while controlling costs.

The utilization of CWC’s patent pending vibration testing program combined with exterior inspections using a high powered camera system and interior inspections are designed to effectively detect any conditions that would adversely affect a blades ability to deliver within its rated performance criteria.

Payback benefits would included the ability to take immediate corrective action in response to the detection of defects that could result in catastrophic failure and remedial action to deal with leading and trailing edge faults and blade damage attributable to lightning strikes during planned maintenance cycles. In addition, if excess vibration levels are detected corrective action can be taken that will assist in bringing the turbine to its optimal operating level while reducing the associated negative effects on bearings and gear boxes.

Rotor Balancing

CWC will ensure that the rotor assembly of the turbine is operating under optimal conditions. Our Patent Pending process involves verifying that both the Aerodynamic Alignment of the blades and relative Mass Moment deviation between all blades on the rotor are within acceptable industry tolerances. Validating rotor balance aids in ensuring turbine power performance and limits unnecessary component wear which combined lead to higher turbine availability and increased ROI.


CWC will establish a rotor induced vibration footprint for a turbine operating within acceptable industry tolerances. These levels serve as the benchmark for acceptable turbine operation and as part of a preventative maintenance program, provide an early detection method for rotor imbalance. Typical causes of imbalance are blocked water drain holes, manufacturing deviations, improper blade installation on hub, lightning strike repairs, and blade adhesive dislodging and becoming trapped at the tip of the blade.


Different degrees of damage require different repair circumstances.  Some damage can be repaired on tower, some damage requires removal from the tower, some damage requires that the blade be sent to a repair facility so the repairs can be done under controlled conditions.  Not all blades can be repaired.

Preventative Maintenance

By maintaining the CWC recommended inspection routine:
• Risks are minimized
• Repair downtime can be controlled
• Turbine performance is maintained
• Proof of problem's existence can be provided to the OEM
• Corrective actions can be taken early
• Previously unknown serial problems can be found
• Support of report findings to the OEM is provided
• Repairs can be verified for quality and monitored

Request a Quote

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