Deutsche Windtechnik

Wind turbine service and maintenance

Company Figures as per June 01, 2019

The Company

1.342Employees

67/6Substations

onshore/offshore

4.104Maintenance

contractswind turbines

144Service stations316

Service vehicles

NORTH SEA

BALTIC SEA

Denmark

GermanyThe Netherlands

Belgium

Sweden

Poland

Großbritannien

United Kingdom

References

Offshore

Offshore References Cluster Management Headquarters Headquarters of a unit Service Station

1 Wind Turbine

Turbine service:Repairs, improvement, inspection, maintenance

Safety technology Troubleshooting

2 Foundation incl. Transition Piece

Servicing above/below water Corrosion protection Inspection, exchange and retrofitting of cranes,

winches etc. Safety technology Seabed surveys and cabling

3 Substation OSS

Inspection, maintenance, repairs, transmission of high and medium voltage power

4 Technical Controlling

Technical management Monitoring Marine coordination Site management

Services Offshore

2

1

3

4

The Company

Inspection scope balance of plantThe Company

Offshore substation

Foundationsabove water

Foundations and scour protectionBelow water

Seabed and cables

Technical subsea inspections and surveysDeutsche Windtechnik Offshore

Generic inspection items:• Corrosion• Fatigue• Foundation stability• External damages

• Cable protection• Fatigue

Basically checking design assumptions

Current characterisation of inspections• From global to detailed• Visual inspections• Spot checks• Sample • Intervals

Assuming slow changes and genericdevelopmentsFollowing (BSH) rules

Technical subsea inspections and surveysDeutsche Windtechnik Offshore

Subsea visual inspections Cable, scour and seabed surveys

Subsea visual inspection in detailDeutsche Windtechnik Offshore

Survey results in detailDeutsche Windtechnik Offshore

Inspection challengeDeutsche Windtechnik Offshore

Desired solution comprises:• Multiple inspection tool• No vessel required for the inspection in itself• Independent operation• Yet remotely controllable and flexible operation (data connection!) • Include visual and sonar technologies• Include measurement technologies

Deutsche Windtechnik Offshore

Bremen – Utrecht – Emden – Taipei

deutsche-windtechnik.com