Part B - Verifications and approval requirements 
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• All load-bearing structural elements of an offshore structure that play an important and de 
cisive role in stability against collapse 
• Other supporting elements that play a decisive role in stability against collapse (e. g. struc 
tural bolts) 
• Seabed composition 
• Marine growth and 
• Corrosion protection (coatings and anodes). 
Which parts of the support structure actually need to be inspected, depends on the type of 
structure concerned. A differentiation needs to be made here, for example, between concrete 
and steel structures. In the test and inspection plan, only those parts of the structure relevant 
to the stability of the whole structure need to be taken into consideration. 
With respect to the support structure, the following documents must be submitted to the ap 
pointed inspector: 
• Test and inspection plan, as well as 
• The reports on the most recently conducted inspections (monitoring reports). 
With respect to equipment with an impact on the structural integrity of the support structure, 
the following documents must be submitted to the appointed inspector: 
• Maintenance verifications 
• Operations manuals of the technical systems to be inspected 
• Technical documents and 
• Reports on the most recently conducted inspections (monitoring reports). 
All the test and inspection reports as well as the respective verifications must be archived and 
stored throughout the life cycle of the offshore structures. 
1.3.6 Decommissioning phase 
A decommissioning plan must be compiled in good time prior to the end of the operating phase, 
based on the decommissioning concept verified during the design evaluation process. 
In as far as the state of the art has progressed between the design phase and the end of the 
operating phase, the decommissioning plan shall be modified to meet the current state of the 
art. The decommissioning plan agreed with the appointed inspector shall be submitted to the 
approval authority which reserves the right to carry out a plausibility check. 
The realisation of the decommissioning plan is accompanied by detailed inspections and 
monitoring through the appointed inspector. The successful completion of the decommission 
ing phase is documented in a certificate of conformity which provides a summary of all the 
individual inspection reports and is submitted to the approval authority. The decommissioning 
phase is completed when the approval authority declares that the measure has been accord 
ingly concluded.