Wind Turbine Blade Repaired and Protected
Belzona, a global designer and manufacturer of industrial protective coatings and repair composites, successfully addressed the wind turbine blade damage issue at Electricity Generating Authority of Thailand’s (EGAT) Khao Yai Thiang Windfarm in Thailand.
Leading Edge Erosion Damage
The windfarm features wind turbines with 40-metre-long (131.2 ft) blades. During routine inspections, evidence of damage measuring 300 cm x 14 cm x 2 mm (118 in x 5 in x 0.08 in) on the leading edge of one of the blades was discovered.
Representatives from the 35-year-old Belzona Authorised Distributorship, Pan Mechanic Engineering, recommended the solvent-free, two-part repair paste, Belzona 5711, to reconstruct the damaged area on the blades, followed by the high-performance coating, Belzona 5721, to overcoat the area.
The application procedure involved surface preparation using an orbital sander, followed by the direct application of approximately 1.4 kg (3.1 lbs) of Belzona 5711 from a self-mixing cartridge onto the blade. The repair area was contoured using a piece of Belzona mixing board.
After a two-hour curing period, a visual inspection was conducted to ensure the application’s readiness for overcoating with approximately 3.5 kg (7.7 lbs) of Belzona 5721. Using a short-bristled brush, this system was then applied to the leading edge and left to cure. The blade was back in service 24 hours later.
EGAT’s technicians were trained at the Belzona Asia Pacific facility to perform the application, with two representatives from Belzona’s Technical Service Department present on site to observe and provide guidance.
Commenting on the application, an EGAT representative said: “We are extremely satisfied with the results achieved by Belzona’s leading edge repair and protection system. The application procedure was very simple, and could be carried out quickly, which ensured that downtime was kept to a minimum. We plan to place an order for more Belzona 5711 and Belzona 5721 .”
Wind Turbine Maintenance Via Polymeric Technology Supports a Net-Zero Future
In order to support the seismic growth of the wind power sector, polymeric technology, such as Belzona 5711 and Belzona 5721, plays a critical role. By safeguarding the integrity of wind turbine blades, this helps to keep windfarms functioning at their optimum efficiency, which in turn, supports a net-zero by 2050 pathway for the planet.
More information about Belzona’s solutions for the wind industry can be found at: http://www.belzona.com/en/industries/wind_power.aspx
Want to learn about the role polymeric technology plays in burgeoning wind industry?
Chloe Hirst, Senior Copywriter, Belzona Inc., Harrogate, UK.