Part B - Verifications and approval requirements 
39 
Special points to be considered in connection with the structural design of steel structures: 
• The special corrosion risks connected with using stainless steel components shall be ac 
cordingly taken into account. 
• The rotor/nacelle assembly and their respective equipment (non-load-bearing steel compo 
nents (secondary steel), such as boat landings, platforms and ladders) shall be connected 
to the lightning protection and earthing system. 
Special points to be considered in connection with the structural design of solid structures: 
• Care shall be taken to route lightning protection and earth cables through the concrete 
structures for dissipation into the subsoil (e. g. connection to an existing reinforcement but 
on no account to a prestressed reinforcement). 
• The special corrosion risks connected with using stainless steel components shall be ac 
cordingly taken into account. 
• The structural design of reinforced concrete and prestressed concrete reinforcements shall 
take account of the aspects of minimum and crack reinforcement, rod and edge spacings, 
concrete covering, bending radii, anchoring and encroachment lengths, anchoring points 
for the transverse force reinforcement as well as corrosion protection measures for pres 
tressed elements. 
• In the case of a heavyweight foundation, a study on the required preparation of the seabed 
shall be provided at the 1 st release stage. When compiling the EIA, the spacial delimitation 
(taking the ensuing slope angle into account) and the preparatory construction measures 
shall be described with such reliability that they can be used as a basis for the sediment 
management concept and sediment drift forecast. 
Please refer to chapter B5.3.3 for more information on the requirements pertaining to offshore 
stations. 
2.3.3 Documents to be submitted when applying for the 2 nd release 
[Doc. No. 220] Design basis - updated 
[Doc. No. 221] Final design corrosion protection (please refer to Appendix 6) 
[Doc. No. 222] Verification report and certificate of conformity pertaining to Docs. No. 220 
and 221 
[Doc. No. 223] Final design of the primary and secondary support structures 
[Doc. No. 224] Verification report and certificate of conformity pertaining to Doc. No. 223 
2.3.4 Installation manual 
The approval holder is responsible for ensuring that an installation manual is compiled. The 
aim of this installation manual is to clearly illustrate all the processes involved together with 
their technical boundary conditions. The respective phases shall be described in sufficient 
detail so as to allow the appointed inspector to check the feasibility and logistics of the 
project. 
The section covering the installation phase provides a comprehensive and transparent de 
scription of all steps involved in the implementation concept for installing the offshore struc 
ture from leaving the base port to arriving at the construction site.