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The importance of blade repair and the stages of wind turbine maintenance

Wind Turbine Maintenance: Why Blade Repair Matters Understand the importance of blade repair within the different stages of wind turbine maintenance.

Table of Contents


The wind energy industry is growing rapidly, so more wind turbines will be built to meet the growing demand. But in addition to the turbines being fully built, installed, and operated, the maintenance requirements of the wind turbine to keep it running also need to be taken into account.

The importance of blade repair in the wind turbine industry

Blade repair is very important in the wind turbine industry, especially if the owner wants to maximize productivity for another 10-15 years. Therefore to prolong the life of the wind turbine, the owner should have a plan to maintain the wind turbine on time.

What is blade repair of the wind turbine and who can do this job?

Many people still think that large-sized wind turbines are made of metal, and in reality, they are not so. Whether the turbine body and gearbox are made of metal or alloy, the propeller comprises a composite material, including fiberglass cloth and carbon cloth soaked in a liquid resin solution. This material has a light and durable properties with low density, providing good pressure resistance when operating continuously at high speed. This material also helps the blades have low rotational inertia, thereby better responding to constantly changing wind speeds.blade repair vivablast 1On average, the wind turbine can operate for 10-15 years, needing to be completely replaced. However, the exact number depends on factors both from the external environment and the quality of manufacturing, volume of operations, and other factors. Timely inspection and repair of the blower blades is a measure to help prolong the life of the blower blades as long as possible.The blade repair is a GWO required course for employees in the wind industry, especially those working in turbine inspection and maintenance. The person performing the blade repair must be certified and have the necessary knowledge, ability, and attitude to work safely in high-risk processes.

What if the wind turbine blade repair is not maintained regularly?

When wind turbine components fail, it can lead to an unexpected wind turbine shutdown. This is entirely detrimental to the operator. Unexpected shutdowns of turbines or propellers result in higher repair costs, potentially voiding manufacturer warranties, inability to meet peak power demand, and loss of revenue. In addition, any significant component repair or replacement often entails expensive crane rentals and other equipment. Wind turbines can catch fire in extreme cases, causing more severe consequences.

The importance of blade repair in the wind turbine industry

In fact, wind farm owners should not wait until the blade fails to find a repairman. Because at this time, the blade has had specific damage and cannot continue to work well, leading to higher repair costs. At the same time, the time to stop working to repair the wind turbine blades will cause a loss of production output.Meanwhile, the cost of periodic inspection is less. More importantly, it helps users detect potential problems early in parts of wind turbines and the blades in particular. So how often should we check? If possible, users should check weekly or every 2 weeks to ensure timely detection of even the most negligible damage to the blades.

How is the blade repair done? Is the blade repair process complicated?

There are 3 basic steps in the blade repair process:

1. Surface cleaning

The first step is to clean the surface to remove dirt, insects, pollen, oil stains, mold, etc. This cleaning should be done with specialized cleaning methods and use specialized chemicals so as not to damage the molecular structure of the coating.

2. Determination of damages

Identify and analyze existing damage on the impeller surface, such as small holes, cracks, scratches, welds, corrosion, etc.

3. Doing the repair

Depending on the severity of the damage and the layers affected by the blade, we will perform the following repair measures:

  • Remove layers of paint from the damaged part
  • Paint and plaster the affected areas
  • Contour and sand the putty to a smooth surface
  • Fill the tiny holes on the surface of the blade
  • Fill the voids
  • Apply top coat (metal coating)
  • Use sand the topcoat
  • Coating the outside paint (metal coating)

blade repair vivablast 2
Safety measures for the employee who make the blade repair:

  • Use safety glasses to protect the eyes, preventing any particles from damaging the eyes.
  • Use a mask to protect the respiratory tract from suspended dust
  • generated during sanding.
  • Use protective gloves to reduce vibration and avoid cuts and cracks.

Maintaining, upgrading, and blade repair can help prolong the blade’s life and make it more efficient for longer. Proper insulation will help increase the electrical energy generated each day. In contrast, repairs help save on replacement costs for equipment and propellers.In conclusion, routine maintenance and blade repair of the wind turbine is a form of cost savings and other benefits. Therefore, you should note and have a specific blade repair plan before any breakdown or malfunction occurs.blade repair vivablast 3The last important thing, you should hire a professional blade repair team to ensure repair quality and save time and costs. At VIVABLAST, we have a team of highly-skilled, fully certified technicians with extensive experience in wind turbine blade repair and maintenance. If you need more information about this service, please contact us via the following information:

  • Tel: (+ 84-28) 38 965 006/7/8
  • Fax: (+ 84-28) 38 965 004
  • Email:

About Us

VIVABLAST was founded in 1994, as a 100% foreign-owned company with an ambition to become the most preferred and trustful service provider for industrial assets protection in Southeast Asia.

Over the past two decades, Southeast Asia experienced rapid economic growth with significant investments in industrial facilities, equipment, and infrastructures of Oil and Gas, Renewable Energy, Marine, Power Generation & Manufacturing sectors.

Hence, VIVABLAST has succeeded as a reliable subcontractor for many International & Domestic companies by delivering our professional services to such prestigious companies as PIRIOU, JGCS, Technip, KNOC, Metacor, PTSC groups, Vietsovpetro, etc. with great passion.

Our innovative system of mobile blasting & painting workshops can be mobilized anywhere in Southeast Asia for all major projects and infrastructure sites, which has performed very well during Vietnam’s first refinery project – Dung Quat followed by Vung Ang 1.2 Power Plant project and the biggest Oil & Gas complex in Vietnam – Nghi Son Refinery.

In 2014, VIVABLAST landed in the soils of Thailand, Myanmar, and Malaysia to capture the growing demands of customers at any time and anywhere.

Over 28 years of steady deliberate growth, we feel confident and proud of our team and their capacities to play a vital role in the multi-disciplinary industrial services provider.

Why Choose Us?

Expertise of industrial assets preserving since 1994


VIVABLAST is a company that offers surface preparation and industrial painting solutions for various industries such as oil and gas, marine, construction, and mining. Some of the solutions they offer include abrasive blasting, hydro blasting, tank cleaning, industrial coating, and passive fire protection.

Board of Management

Mr Jacques Vivarès – Chairman
Mr Boris Vivarès – VIVABLAST Group General Director – Commercial & Business Development
Mr Shanthamani Muthukumar – VIVABLAST Vietnam General Manager

VIVABLAST is a global provider of industrial asset protection solutions in Vietnam, Thailand, Myanmar, and surrounding countries. VIVABLAST is a 100% foreign-owned Company accredited ISO 9001:2015 & ISO 45001:2018 by Bureau Veritas with offices and setup over South-East Asia. Since 1994, we have been servicing industry leaders in major projects from construction phase to maintenance programs. Our vertical expertise includes all industry sectors, particularly: oil & gas, power & utilities, shipbuilding, mining and manufacturing. We design and deliver professional services to preserve our Clients’ assets sustainably, through efficient and reliable specialty services and integrated solutions.

VIVABLAST is committed to sustainability and social responsibility. The company aims to reduce its environmental impact through various initiatives, such as implementing environmentally friendly technologies and reducing waste. Additionally, VIVABLAST has programs in place to support its employees, their families, and the communities in which they operate. The company also supports various charitable organizations and encourages its employees to participate in community service activities.