GWO Blade Repair Training Standard V2.0
2021-04-01_TS_BR_V2
Training staff shall:
Give constructive feedback on the participants’ explanations about the function of the inner and outer laminates and the core material in a sandwich construction, and the reasons for using a sandwich construction in wind turbine blades
CURING OF FIBRE REINFORCED COMPOSITE LAMINATE
Learning objectives:
The participants can explain the functions of the tools, instruments and vacuum consumables used during the curing process (Knowledge, intermediate level) The participants can perform the curing of a fibre-reinforced composite laminate using heat and vacuum and record the vacuum level and temperature (Skills, intermediate level) The participants can act independently in performing curing of a fibre reinforced composite laminate using heat and vacuum, and record the vacuum level and temperature (Ability, intermediate level)
Training staff shall:
Explain the function of the tools required to cure a laminate with heat and vacuum, and the instruments required to record the vacuum level and curing temperature Explain the health and safety risks associated with using heating blankets and vacuum pumps by considering the risk of burns, the risk of fire and electrical hazards Demonstrate how to mitigate the above described risks using PPE, pre-use inspections, correct handling of the blankets, and the use of electrical safety devices such as residual current devices
Explain how a vacuum is used to remove air and to consolidate the laminate during the curing process
Explain how an absolute pressure gauge (vacuum gauge) is used to record the vacuum level during the entire curing process
Explain how to find the blade manufacturer specific vacuum levels for curing a laminate
Explain the function of the vacuum consumable materials:
a. peel ply
b. release film
c. breather fabric
d. tacky tape
e. vacuum foil
f.
vacuum tube
g. resin trap
Demonstrate how to create a vacuum bag over a laminate repair, where to place the thermocouple to get the most accurate temperature reading, and how to use a resin trap to protect the vacuum pump from excess resin
Global Wind Organisation www.globalwindsafety.org
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