Review of Cabling Techniques and Environmental Effects Applicable
Review of Cabling Techniques and Environmental Effects Applicable
Review of Cabling Techniques and Environmental Effects Applicable
Create successful ePaper yourself
Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.
<strong>Review</strong> <strong>of</strong> <strong>Cabling</strong> <strong>Techniques</strong> <strong>and</strong> <strong>Environmental</strong> <strong>Effects</strong> <strong>Applicable</strong> to the Offshore Wind<br />
Farm Industry – Technical Report<br />
Table 3.11: Tracked Cable Burial Machines<br />
46<br />
Type Burial Systems Available Maximum<br />
Burial<br />
Capability<br />
Eureka Jetting system<br />
Mechanical wheel cutter<br />
Mechanical chain excavator<br />
Otter Chain excavator for shallow water<br />
working<br />
Spencer Chain excavator for shallow water<br />
working<br />
1.0m<br />
1.2m<br />
2.2m<br />
Maximum depth <strong>of</strong><br />
Operation<br />
2.2m Within diver<br />
operations<br />
1.5m Within diver<br />
operations<br />
Operator<br />
1500m Global Marine<br />
Global Marine<br />
Global Marine<br />
Nereus III Two separate burial tools available 1.0m 2500m Tyco Submarine<br />
Systems Ltd<br />
Nereus IV Two separate burial tools available 1.0m 2500m Tyco Submarine<br />
Systems Ltd<br />
CT2 Jet trenching system Up to 2.0m<br />
in s<strong>and</strong>s<br />
<strong>and</strong> low to<br />
medium<br />
strength clays<br />
Trencher T2 Jetting system<br />
Mechanical chain excavator<br />
Trencher T1 Jetting system<br />
Mechanical chain excavator<br />
TM 03 Jetting system<br />
Mechanical wheel cutter<br />
Mechanical chain excavator<br />
TM 02 Jetting system<br />
Mechanical wheel cutter<br />
Mechanical chain excavator<br />
MED 1 Jetting system<br />
Mechanical chain excavator<br />
1.6m<br />
1.6m<br />
2.0m<br />
1.2m<br />
1.0m<br />
1.3m<br />
2.3m<br />
1.0m<br />
1.2m<br />
2.0m<br />
1.0m<br />
3.0m<br />
3000m CTC Marine<br />
Projects Ltd<br />
Up to 1000m CTC Marine<br />
Projects Ltd<br />
Up to 1000m CTC Marine<br />
Projects Ltd<br />
Within diver<br />
operations<br />
Within diver<br />
operations<br />
Travocean<br />
Travocean<br />
120m Travocean<br />
MED 1 Mechanical wheel cutter 1.5m 500m Travocean<br />
LBT1 Jetting system<br />
Mechanical wheel cutter<br />
Mechanical chain excavator<br />
3.0m<br />
1.2m<br />
1.6m<br />
50m Marine Projects<br />
Int.<br />
Tracked cable burial vehicles are usually operated (but not exclusively) in post<br />
laid burial mode to bury subsea cables which have been previously laid on the<br />
seabed <strong>and</strong> are typically used for shorter sections <strong>of</strong> cable burial. However,<br />
some vehicles have been used successfully to bury up to 10km lengths <strong>of</strong> subsea<br />
cable. Tracked cable burial vehicles are launched from the host vessel <strong>and</strong> then<br />
locate the subsea cable system to be buried by using a combination <strong>of</strong> cable<br />
detection <strong>and</strong> underwater camera systems. The tracks then straddle the subsea<br />
cable <strong>and</strong> the cable is loaded into the cable burial tool which is fitted to the<br />
vehicle. As the vehicle makes forward progression the vehicle has the capability<br />
to automatically steer along the line <strong>of</strong> the cable with an auto track capability<br />
linked to the cable locator system fitted to the front <strong>of</strong> the vehicle.