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Part  B  -  Verifications  and  approval  requirements

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Foundation
elements

Figure  1-2:  Components  of  the  overall  mechanical  system  of  an  “offshore  station”.
This  is  the  case,  for  example,  when  measuring  the  natural  frequencies  and  loading  assumptions ­
  of  the  offshore  wind  turbine.
The  test  procedure  principally  includes  the  following  elements  and  steps:
(1)  Type  certificate  for  the  rotor/nacelle  assembly  in  the  case  of  an  offshore  wind  turbine;  in
the  case  of  an  offshore  station  the  functional  description  and  design  concept,
(2)  Examination  of  the  design  basis,  incl.  site-specific  conditions,  such  as  the  subsoil  properties ­
  (site  assessment),
(3)  Test  of  the  site-specific  loading  assumptions  and  the  support  structure  as  well  as  the
foundation  elements  (site-specific  design  evaluation),
(4)  In  the  case  of  an  offshore  wind  turbine:  Examination  to  determine  that  the  type  certificate
(1)  for  the  rotor/nacelle  assembly  actually  incorporates  all  the  site-specific  conditions;  in
the  case  of  an  offshore  station:  Update  and  more  detailed  specification  of  the  respective
concepts,
(5)  Certificate  of  conformity/verification  report  for  the  site-specific  design  of  the  offshore
structures  following  completion  of  items  (1)  to  (4),
(6)  Test  and  evaluation  of  the  facilities  for  inspecting  offshore  wind  turbines  as  an  overall  system ­
  (Supervisory  Control  and  Data  Acquisition,  SCADA,  including  the  Condition  Monitoring ­
  System,  CMS,  for  the  rotor/nacelle  assembly);