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Part B - Certificates and approval requirements 
• Risk assessment for the significant working phases 
The risk assessment is used for estimating dangers during work phases and for preparing options 
for preventing danger. These include, amongst other items: 
Analysis of possible risks and presentation of their effect on the concept 
Presentation of dangerous situations that could occur due to deviations from the planned work 
ing procedure 
Emergency and recovery procedures 
• Required status certificates 
The status report following completion of installation work or for major interruptions describes the 
individual changes above and below the seabed, and their composition based on layer and height. 
The data shall be kept continuously up-to-date in the installation manual. This serves the purpose 
of predictive risk observation and the decommissioning requirement. 
4.5 Operation 
Structures at sea shall be maintained. Detailed planning shall be drawn up and kept updated for this 
purpose. Changes to the situation shall be documented after completion of the work. These documents 
form part of the installation manual. 
During maintenance in operation, all significant components and assemblies shall be presented and 
certified from the production location to the installation site in order to exclude dangers to personnel 
and risks to equipment and the environment. This is done in the same way as the necessary certificates 
during the implementation phase. 
4.6 Decommissioning 
Following final cessation of use, offshore structures shall be removed. Detailed plan-ning shall be drawn 
up for this in good time prior to the start of decommissioning. Changes shall be documented and be 
come part of the installation manual. 
During the decommissioning, all significant components and assemblies shall be certified from the de 
commissioning site to the place of their ecologically sound disposal in order to exclude dangers to per 
sonnel and risks to equipment and the environment. The certificates are provided in the same way as 
the necessary certificates during the implementation phase. 
5 Other approval requirements 
Additional appraisals are required in addition to the inspections stipulated in the previous chapters, in 
particular: 
• Evaluation of the protection and safety concept for the wind farm (safety of shipping, identifica 
tion, illumination, emergency plans, etc.) according to the BSH standard „Schütz- und Sicherheit- 
skonzept“ (in preparation) 
• Safety of personnel (e.g. for helicopter landing decks and airdrop platforms, manned transformer 
substation, boat landing stages, ladders and stairways, etc.), 
• Noise emissions 
• Use of substances that may have a polluting effect in water 
• Possible pollutant discharge 
These assessments are not dealt with in this „Design of Offshore Wind Farms“ standard.