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Part B - Certificates and approval requirements 
The following checks are to be performed as part of regular inspection by the certifier/registered inspec 
tor during production in the welding company/on site/in the prefabricated concrete plant: 
Steel fabrication 
• Inspection of the material certificates according to DIN EN10204 3.2 f521 of the steel manufacturer 
• Inspection of the non-destructive testing reports 
• Inspection of the production process and undertaking of non-destructive testing 
• Final check on finished components: 
• Checking dimensions and tolerances 
• Checking coat thicknesses of the corrosion protection 
• Checking the general condition 
• Checking for damage 
• Checking the audibility and traceability of components and the materials/semi-finished parts used 
• Checking of other quality records and goods outgoing check 
Concrete construction 
• Checking the concrete delivery notes 
• Checking the strength samples (sample cubes) 
• Checking the external inspection reports according to DIN 1045-3 f531. 
• Checking the reinforcement 
• Checking the concrete cover 
• Checking the dimensions of the structure 
• Checking the prefabricated components 
• Checking other quality records 
6.3 Transport- and installation inspection 
The certifier/test expert shall conduct the following inspection procedures for offshore wind farms and 
support structures during transport and installation: 
• Inspection of loading and lashing for sea transport 
• Inspection of compliance with weather conditions for sea transport 
• Inspection of installation of the support structure including lifting work 
• Inspection of installation of the machine and rotor blades 
This involves checking: 
• Correct undertaking of loading, lashing, transport and installation in accordance with the implemen 
tation documents 
• Checking for damage 
• Checking for corrosion or damage to the corrosion protection 
• Traceability and numbering of the components 
• General appearance of the components after installation 
• Reports by the companies undertaking the work which document the testing that is performed un 
der their own responsibility 
6.4 Commissioning inspection 
Commissioning takes place after installation and grid connection. The following checks are performed as 
part of inspection of commissioning: 
• Conformity of the main components with the certified/checked design documents and traceability/ 
numbering of the same 
• General appearance