The Global Wind Organisation (GWO) Blade Repair standard is the industry’s common baseline for technicians carrying out repairs on wind turbine blades. Owners, operators and OEMs use it to confirm that a technician has been trained and assessed to a known scope before they are allowed to work on a blade.
What is in scope
The standard covers blade construction and materials, inspection and damage assessment, laminate and core repairs within defined size limits, leading-edge and coating repairs, safe handling of resins and abrasives, and the documentation that proves a repair was done correctly. Repairs outside those limits, structural repairs and repairs to lightning protection systems need further training or OEM-specific approval.
How long it takes
Our GWO Blade Repair course runs over ten working days at the Humber Training Centre, from 08:00 to 16:00, with a maximum of six delegates so that everyone spends their time on a blade section rather than watching. Blended versions exist in the market that move theory online; we teach the full course in the workshop because the practical hours are where competence is built.
After the certificate
Your certificate is recorded in WINDA, the GWO database that employers and sites check. The GWO Blade Repair standard has no formal expiry, but a refresher every two years is recommended and many employers require it. Technicians who want to extend their scope move on to our Advanced Blade Repair course.
Before you book
You need to be 18 or over, hold or create a WINDA ID, and bring photo identification and a completed medical self-declaration. If you are a Lincolnshire resident, the Greenskills Skills Bootcamp may fund your place.