DEME Installation & Commissioning
Inter-Array Cable Installation & Scour Protection
Laying, termination and burial of offshore wind inter-array cables, and installation of scour protection using fallpipe vessels.
Description
DEME installs inter-array cables and scour protection for offshore wind farms, using its fallpipe vessels and purpose-built trenching equipment.
Key features
- At Merkur, DEME managed the engineering and fabrication of 73 copper-cored 33kV inner array cables (83 km total)
- Cables were laid with the converted fallpipe vessel *Flintstone*, then terminated and buried 1 m below the seabed with a tailor-made trencher deployed from the fallpipe vessel *Rollingstone*
- At Rentel, DEME designed and installed a two-layer scour protection system: a filter layer placed before foundation installation and an armour layer after cable pull-in
Applications
Offshore wind farm array cable installation, cable burial and scour protection around foundations.
Specifications
| Merkur inner array cables | 73 x 33 kV copper-cored, 83 km total |
|---|---|
| Burial depth (Merkur) | 1 m below seabed |
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