CASE

Wind Turbine Blades LEP Protected with Belzona 5721

Problem

A customer in Southwestern Ontario was looking to repair and refurbish some of their blades that were affected from severe erosion. The blades were not initially protected and were only put in service with the factory gel coat.

Industry

Power Generation

Application Date

2020

Location

Tiverton, Ontario

Equipment Application

FBC-Fans, Blowers and Compressors

Subtrate

Composite

Product

Belzona 5721
Belzona 2911 (Elastomer QD Conditioner)

Repair Stages

Application Situation

They decided to test Belzona 5721 coating as they were impressed with the features and performance of this product. Belzona 5721 has been tested against internationally recognized standards ASTM G73, ASTM G76and ASTM G32 and exhibits excellent erosion and cavitation resistance.

Application Method

Before the application of Belzona 5721, the surface of the LEP was cleaned and sanded. Defects and areas that needed rebuild were repaired. Once a clean and even surface was achieved, Belzona 2911 (Elastomer QD Conditioner) was applied to condition the surface and allowed to become touch dry. Then, one coat of Belzona 5721 was applied to the thickness of 20 mils. The product was allowed to cure before putting the turbine back in service.

Belzona Facts

The product was inspected via drone after 7 months in service, and the product appeared to be intact with no signs of wear , chalking or peeling.

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