Part  B  -  Certificates  and  approval  requirements

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3  Site-specific  design  certificates

3.1  Turbine
As  a  rule,  a  type  certificate  shall  be  presented  for  the  turbine  provided.  As  an  exceptional  case,  it  is
also  possible  to  present  another  appropriate  certificate  for  the  turbine  to  be  approved  in  the  case  of
a  pilot  system  or  new  development  that  has  not  yet  had  time  to  be  type-certified.  The  purpose  of  the
type  certification  as  well  as  the  exceptionally  allowable  other  certification  is  to  ensure  expert  testing
and  confirmation  that  the  turbine  type  conforms  to  the  basic  standards  and/or  directives  in  terms  of  its
design  and  documentation,  and  can  be  produced  on  this  basis.  Marine  ambient  conditions  are  to  be
considered  in  this  regard.  Offshore  operation  of  the  wind  farm  in  accordance  with  the  standard  and/or
directives  shall  be  demonstrated  for  the  type  certification.

This  results  in  the  following  tasks  for  the  type  certification:
•  Design  evaluation  of  the  turbine  type:
Loading  assumptions
Management  and  safety  concept
Rotor  blades  including  static  or  dynamic  blade  tests
Machine
Optionally  tower  (without  substructure,  however  including  connection  of  the  tower  to  the  substructure ­
  and  its  properties,  if  necessary  for  evaluation  of  the  other  components,  e.g.  rigidity
assumptions)
Electrical  systems  and  lightning  protection
Commissioning  inspection  for  one  of  the  first  offshore  wind  turbines  of  the  tested  type
•  Implementation  of  the  design  requirements  in  production  and  installation:  a  one-off  production  inspection ­
  and  tour  of  the  production  process  ensures  that  the  design  requirements  in  terms  of  production ­
  and  installation  defined  in  the  implementation  documents  can  be  achieved  in  the  production
company.
•  QM  system  of  the  manufacturer  of  offshore  wind  farms:  a  valid  certificate  of  quality  management  in
accordance  with  ISO  9001  shall  be  presented.  If  this  is  not  available,  the  quality  management  may
be  tested  based  on  ISO  9001  in  consultation  with  the  certifier/registered  inspector.
•  Prototype  measurements
The  following  measurements/tests  shall  be  performed  on  one  of  the  first  prototypes  (e.g.  prototype
on  land):
Load
Performance  curve
Grid  compatibility
Noise
System  behaviour

3.2  Support  structure
3.2.1  Site  conditions  and  design  basis
First  of  all,  the  site  conditions  and  their  transfer  to  the  design  basis  shall  be  presented  and  evaluated  by  the
certifier/registered  inspector.  The  design  basis  shall  be  evaluated  as  early  as  possible  prior  to  commencement ­
  of  design  considerations  or  preliminary  considerations  of  the  system  design.