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Appendices 
Operations Manual 
The operations manual describes all the significant processes and their dependencies that 
ensure the safe, long-term operation of the facility. It includes the description of the workflow 
(operational concept) and the respective communication channels as well as the ongoing mo 
nitoring (operations-related monitoring) of the offshore wind farm and the grid connection. 
Periodic Inspections 
Periodic inspections in terms of this standard are regular tests of the components of an off 
shore structure by the appointed inspector/certified expert. These serve to ascertain and to 
evaluate the actual state of the test object. The periodic inspections take place according to a 
test and inspection plan which is compiled by the operator and coordinated with the appoin 
ted inspector. 
Planning Results 
Calculation results, proof of strength, drawings, specifications and implementation notes, 
based on the design rules and basic documents. 
Preliminary Design 
First draft of the possible planning design variants of the support structure and the foundation 
elements in order to evaluate whether the project is basically technically feasible. The prelimi 
nary design is based on the design basis. As a rule, the type of offshore wind turbine has still 
to be fixed at the time of compiling the preliminary design. For this reason, the key technical 
RNA data may be estimated for the assessment within the scope of the preliminary design 
using possible variants. 
Preservation 
Preservation encompasses all measures that help to maintain functionality. The DIN 21051 
standard divides preservation into four basic measures: Maintenance, inspection, repair, im 
provement. 
Primary Structure 
Support structure located within the main power flow. 
Project Certificate 
The project certificate is issued after the completion of the implementation phase. This en 
compasses all the phases from development to implementation, including all the individual 
stages thereof (e.g. manufacturing, loading, transportation, etc.). An appointed inspector per 
forms independent tests and inspections and monitors and documents the results throughout 
all stages. At the end of each stage, a certificate of conformity that summarises the test and 
inspection reports is issued by the appointed inspector. Once all the required certificates of 
conformity in conjunction with the certificate of conformity pertaining to the monitoring of the 
commissioning phase have been presented, a project certificate can be issued. 
Protection Area 
Protection areas are spaces where persons are protected, for a limited duration, against da 
mage resulting from specific hazards. In the case of offshore structures, this mainly involves 
danger as a result of a fire, caused by smoke, fire, heat and the consequences of the mecha 
nical or chemical destruction of the surrounding components. Furthermore, protection areas 
to provide shelter and protection against harsh weather conditions may also be created. 
p-y Method 
Modulus of subgrade reaction method with non-linear, soil type and depth-dependent spring 
characteristics for the design of foundation elements.