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Part C - Time sequence 
The major configuration parameters as well as the configuration standards and directives to be applied 
shall be named in the design basis. 
The object of certification/testing of the design basis and the basic design is to ensure reliable site and 
configuration conditions so as to minimise potential errors in the subsequent detail design at an early 
stage. In doing so, it is necessary to ensure that the particular offshore wind turbine or offshore wind 
farm is considered as an overall system. The certifier/registered inspector shall conduct an in-depth 
plausibility check of all site conditions and their correlations for this purpose, and shall evaluate all rele 
vant configuration conditions. 
3 Design phase 
Detailed evidence, design diagrams and specifications shall be prepared in the design phase. This ap 
plies to support structures, the transformer substation with grid connection, measuring mast and any 
additional components of the offshore wind farm. As a rule, the turbine has a type certification, therefore 
certification that it is suitable for use at the site is sufficient. The design phase is accompanied by the 
site-specific design evaluation. 
At least 1 year before the start of installation of the systems, the certified/reviewed design documents 
shall be presented to the BSH in the form of the design basis and the basic design. Successful comple 
tion of evaluating the design documents shall be documented by the certifier/registered inspector with a 
certificate of conformity as well as associated test reports. 
Following presentation of the certificate of conformity for the design evaluation and after a concluding 
test, the BSH shall issue the approval for installation, if necessary with the assistance of a recognised 
expert institution, person or group of persons. 
4 Implementation phase 
Production, transport, installation and commissioning shall be followed by the certifier/registered in 
spector through independent inspections. Prior to the commencement of production, the qualification 
of the production companies shall be checked, and an inspection plan agreed by the project designer, 
manufacturers and certifier/registered inspector. The agreed inspection plan shall be sent to the BSH 
prior to the start of production. 
The certifier/registered inspector shall immediately inform the client and the BSH if serious deviations 
from the requirements specified in the checked and approved design documents become apparent du 
ring production, transport and installation. 
Completion of production, transport, installation and commissioning shall be documented with corre 
sponding certificates of conformity that group together all issued inspection reports. Following presen 
tation of the certificates of conformity for production, transport, installation and commissioning and, if 
necessary, a concluding test, the BSH shall issue the approval for operating the offshore wind farm, with 
the assistance of a recognised expert institution, person or group of persons. 
5 Operating phase 
Annual periodical inspections shall be performed during the operating phase. The certifier/registered 
inspector shall issue inspection reports on the inspected systems. The certificate of conformity for the 
periodical inspection shall be issued if the inspected systems are operated in accordance with the stan 
dards on which they are based and are maintained in accordance with the certified/reviewed mainte 
nance plan. This groups together the results of the individual inspection reports.