Content 
5 
3.4.4 Geotechnical documents to be submitted when applying for operating 
release 67 
3.5 Operating phase 68 
3.5.1 Preliminary remarks 68 
3.5.2 Technical codes of practice 68 
3.5.3 Requirements and required verifications 68 
3.5.4 Documents to be submitted for maintaining the operating permit 68 
3.6 Decommissioning phase 69 
3.6.1 Preliminary remarks 69 
3.6.2 Technical codes of practice 69 
3.6.3 Requirements and required verifications 69 
3.6.4 Documents to be submitted when applying for decommissioning release 
and final declaration 69 
4 Rotor/nacelle assembly 70 
4.1 Preliminary remarks 70 
4.1.1 Technical codes of practice 71 
4.2 Development phase 71 
4.2.1 Preliminary remarks 71 
4.2.2 Requirements and required verifications 71 
4.3 Design phase 72 
4.3.1 Preliminary remarks 72 
4.3.2 Requirements and required verifications 72 
4.3.3 Documents to be submitted when applying for the 2 nd release 73 
4.4 Implementation phase 73 
4.5 Operating phase 73 
4.5.1 Requirements and required verifications 74 
4.5.1.1 Evaluation criteria for the periodic inspections 74 
4.5.1.2 Scope of the periodic inspections 74 
4.5.1.3 Periodic inspections - inspection intervals 74 
4.5.2 Documents to be submitted when applying for an extension of the 
operating permit 75 
4.6 Decommissioning phase 75 
5 Operational structure of offshore stations (topside) 76 
5.1 Preliminary remarks 76 
5.1.1 Classification into danger, protection and safety zones 76 
5.2 Development phase 77 
5.2.1 Preliminary remarks 77 
5.2.2 Technical codes of practice 78 
5.2.3 Requirements and necessary verifications 78 
5.2.4 Documents to be submitted for the 1 st release 79 
5.3 Design phase 79 
5.3.1 Preliminary remarks 79 
5.3.1.1 Load handling concept 79 
5.3.1.2 Fire and explosion protection concept 80 
5.3.1.3 Access concept 82 
5.3.1.4 Space utilisation plan 82 
5.3.2 Technical codes of practice 83 
5.3.3 Requirements and necessary verifications 83 
5.3.4 Documents to be submitted to apply for the 2 nd release 83 
5.3.5 Updating the concepts 83 
5.3.6 Installation manual 84 
5.3.7 Documents to be submitted to apply for the 3 rd release 84