Function
The topside structure provides support and protection for the electrical and other systems.
What it costs*
About £123 million for a 1 GW wind farm.
Who supplies them
Aibel, Babcock, CS Wind, Smulders and Seatrium.
Key facts
The topside is a complex steel structure, incorporating many safety considerations and services.
A helideck is generally specified to enable helicopter landing (see O.1.3.4 for further information). Offshore helidecks are generally aluminium to minimise corrosion and weight. An accident during take-off or landing can result in hundreds of litres of jet-fuel spilling from ruptured fuel tanks so stringent safety regulations are in place with the requirement for an integrated fire-fighting system. The use of helicopters for crew transfer is an integral part of maintenance and service operations for some but may only be used for emergency access or egress by others.
What’s in it
- Helideck and/or heliwinch
- Steel structure