Part B - Verifications and approval requirements 
33 
Corrosion protection is an important factor in obtaining approval, in particularly the following 
aspects: 
• The technical aspect of corrosion protection that ensures that the verified stability and inte 
grity of the structure remain intact for the expected technical life cycle of the structure 
• The implementation of the safeguards shall be carried out with the lowest possible emissi 
ons so as to be accordingly environmentally-friendly and nature-compatible in order to pro 
tect the marine environment 
Both the above are subject to tests and inspection by the authorities. 
The various different strategies deployed by the builders of the structure with respect to cor 
rosion protection shall be differentiated on the one hand according to the location (atmos 
phere, spray, water changes, underwater conditions) and, on the other hand, according to 
material characteristics, including the type of processing involved. 
Possible strategies include, for example: 
• Simple coating 
• Coating in combination with a cathodic corrosion protection system (CCP) 
• Impressed-current systems and/or 
• Corrosion allowance, mostly in combination with the three processes described above. 
In this connection, approvals based on corrosion protection systems (also on a combination 
of different systems), corrosion zones and suitability tests can be derived from the BAW lists 
detailed in chapter B2.3.1. The BAW lists are of a recommendatory nature. What is decisive is 
that the technical codes of practice are accordingly fulfilled. 
With respect to the local areas of application, one must differentiate between the application 
of the respective corrosion protection system to the parts of the installation which are located 
above the water line, those in the water exchange zone and those which are under water. 
When analysing materiality, as much attention to the chemical product shall be paid as to the 
treatment and processing of the specific components of the offshore structure. 
2.1.1 Structural behaviour in the case of a collision of a ship with an offshore station 
When assessing structural behaviour in the case of a collision of a ship with an offshore sta 
tion, stability is of particular importance as both the safety of individuals and the security of 
supply must be upheld. 
A collision analysis shall be conducted based on the information contained in Appendix 1. 
This shall include documentation stating which concept is planned with respect to a collision 
of a ship with the operational structure and its respective support structure. The following top 
ics, for example, shall be discussed: 
• The structure shall not fail and appropriate hull-retaining measures shall be accordingly do 
cumented. 
At the same time, this analysis shall illustrate how the best possible hull-retaining design can 
be achieved.