Despite different levels of in-house production in different manufacturer structures the final mechanical and electrical assembly of a wind turbine nacelle in a workshop environment is characterised by generic process stages, whereas the assembly of the tower and rotor blades is subject to on-site access conditions.

The individual assignments are regulated and monitored by the manufacturer´s in-house quality management system. High-quality assembly, however, requires an understanding of wind turbine operating conditions and factors on the part of all involved.

Since turbine contracts are generally customized the assembly process begins with the collection and organization of contract-specific data and specifications and ends with the compiling of customer-specific turbine documentation and operating instructions.

The assembly assignments are completed by a testing procedure which functions as a final quality check before the nacelle is released for shipment.

• Collect and organise all required contract-specific documentation and specifications

• Assure availability of materials and components (quality management input controls and in-house logistics) 

• Secure the work area(s) and select appropriate protective clothing

• Conduct assembly procedures using the stipulated tools, devices and hoisting/transport equipment in accordance with H&S regulations, quality management specifications and documentation requirements 

• Carry out post-assembly adjustments and alignment of components

• Conduct tests of all functions in line with quality management stipulations and customer acceptance procedures (indoor commissioning)

• Issue completion certificate and - where applicable - customer acceptance certifificate 

• Compile all machine documentation and release for shipment