Repairs on Wind blades are not a common standard in the industry, and every Wind blade manufacturer has his Structural Repair Manual which has to be followed. In this course, you will learn methods of repair smart prepared layup, by elevated heat, use of a vacuum which will simplify your work and cut cost by saving time and error.
EFC owner Bert Groenewoud and Instructor Robert Otterspoor, have a lot of knowledge and hands-on experience in repair of Wind Turbine Blade such as; NDI, Damage assessment, report writing, repair and post-repair inspection, all gained during wind blade repair projects for Vestas in the Philippines.
No previous experience in composite repair is required, but the EFC TECH 001, our Basic Composites course is recommended for basic knowledge, or an equivalent level of experience in composite materials and repair would benefit participants in this course.
English understanding, reading and writing skills It is important that you have an adequate level of understanding and readingtechnical English for reading manuals, drawings, and instructions used during this course.
We as EFC in this course do NOT practice Wind Turbine blade climbing techniques and a do not hand out a climbing certificate!
Please contact Airas or EFC for more information if needed.
This course is developed for anyone from an inspector to a technician in the field, to learn about the principles of Wind Turbine blade repairs. Repairs on Wind blades are not a universal standard in the industry, and every Wind blade manufacturer has his own Structural Repair Manual which has to be followed
Number of participants
Minimum required 2 and maximum 10 per course*.
* Courses will be confirmed as running by EFC as soon as sufficient applications are received!
To provide participants with the theoretical knowledge and practical Hands-On skills necessary to carry out the repair on turbine wind blades
At the end of the course the participants:
Must be able to work independently with minimum supervision
Must be attentive to details
Can work according to Safety regulations and recognize hazardous situations & materials
Can work with the Wind blade OEM manuals in the repair of wind blades
Knows how to work with dry glass fabric and liquid Epoxy resin to impregnate wet in wet (Wet Lay-Up)
Can apply damage assessment, plan the work and work as planned
Can find steps of repair to be taken in the Wind turbine blade related OEM manuals
Can repair double curved Glass fiber panels with Nomex® honeycomb and foam core
Performs ‘Wet Lay Up’ repairs on sandwich panels from the outside
Can apply fundamental vacuum bagging, bleeder & breather concepts
Must be able to understand and read technical Englisch as written in the SAE- CACRC AIR 4448 and Composite and Bonded Glossary.
Course content theory
Health and Safety during climbing
Blade structure and ply layup drawings
Types of resin, gel-coat, paints and their properties
Cure and post-cures of material used
Basic material used
Exothermic reactions and safety precautions
Repair types and sequence
Taperssand repairs by orbital sanders
Autonomous heat blankets for wind turbine blade repairs
Mini hot bond heat consoles and heat blankets for Wind turbine blade by GMI Aero
Moisture meter use
Fiber Drying methods for blades
OEM blade production repair manuals and layup drawings
Sanding with orbital sanders
NDI, Non-Destructive visual Inspection by tapping
Dolphicam use for damage assessment
A damage assessment by photography and Drone
Damage Report writing
Lightning Strike repair
Erosion leading edge repair
Trailing edge repair
Nose Cap repair
Post repair Inspection
Participants will be intensively monitored while repairing reinforced fiber laminates from sandwich parts and low temp Lay-Up of vacuum materials and perform vacuum leak checking and hot curing with autonomous heat blankets.
Damage assessment and reporting
Repair type and repair sequence
Determine ply directions in fiber laminates by sanding.acc technical data drawings/ blueprint if available
Damage removal, scarf preparation by orbital sanding using a Wet Lay-
Remove moisture by dry cycle under vacuum and heat
Cure and/or post-cure with autonomous heat blankets
Introduction Hot Bond repair consoles and their heating equipment use on wind turbine blades.
Performs necessary ‘Wet Lay Up’ repairs on like lightning strikes, eroded damaged leading edges, trailing edge impact damage.or bird strike repair
Multiple choice questions from each of the teachings Level 1-3
Successful completion is 75% correct answers
The examination will be closed book and can be conducted by a Part 147 approved Examiner upon request
The practical mark will be the average of all marks gained from the practical exercises
All grades will be recorded in the participant individual training records and kept on record at EFC for unlimited time (compliant with Reference EASA Commission Regulation (EU) No 1321/2014) and the GDPR rules
A certificate of accomplishment is handed out to each participant along with a print out of the course content
Assessment activities are built into our courses, to give feedback on the achievement and personal potential and kept a record in their personal logbook.
The final outcome of the participant's Examination, assessment document and logbook per student will be digitally sent to you or your company responsible manager, HR or training department.
We also comply with the European GDPR rules as effective on May 25th, 2018 concerning storage of private information of participants who attended our courses.
If required, our Training courses can be tailored made to meet your specific needs. Course dates as noted on our course schedule can be adjusted on request to meet your required starting date. If you have a requirement for this, please contact our business development manager, Rolf Hovener, via his personal page.
Course run Onsite and at special request
For your company to benefit, this course can be held ‘On-Site’ at your facility under certain conditions. Click on this link to the Onsite information webpage!
Courses as noted on our course schedule page can be run on request to meet your required start and end date.
All listed course prices are Excl VAT. (Dutch VAT is 21%). EFC complies with Dutch tax laws. On request, companies can be sent an invoice instead of paying direct On-line with PayPal, IDEAL or credit card.