- published: 18 Apr 2016
- views: 9333
Offshore Wind Farm inner array grid cable installation on the Nordsee One OWF project as executed by Siem Offshore Contractors during the summer of 2016. The submarine cable installation was performed using the leading Siem cable installation Duo (Siem Aimery - Cable Lay Vessel and Siem Moxie - Installation Support vessel). Visit http://www.siemoffshorecontractors.com/ for more information about SOC.
Typical Offshore Wind Farm array cable installation process using the Siem Aimery Cable Lay Vessel and Siem Moxie Installation Support vessel by Siem Offshore Contractors GmbH. Visit http://www.siemoffshorecontractors.com/ for more information about SOC.
In the summer of 2016, VBMS completed their scope of work for the Sandbank Offshore Wind Farm existing of cable supply, CPS, installation, post lay burial and termination & testing of 76 infield cables. The Sandbank Offshore Wind Farm is situated in the German Bight, next to the DanTysk Offshore Windfarm. The 72 wind turbines will generate a total capacity of 288MW. For more information see www.vbms.com
Baltic Offshore Windfarm - First commercial windfarm in Germany in the Baltic Sea. nkt cables supplied 20 km of 30 kV three core medium voltage submarine cable (approx. 1,000 m each) with integrated fibre optics for the farm's own cabling and 60 km of 150 kV three core high voltage submarine cable with steel armouring and 3 integrated fibre optics for the grid connection • The high voltage submarine cable has a diameter of 24 cm and a weight of 115 kg/m • The longest individual section of the high voltage submarine cable has a weight of 1,850 tonnes • Development and delivery of 5 offshore joints • More than 15 ships were deployed during the installation phase, plus tugs and crew vessels • Supply of the VALCAP® monitoring system with AdapPro for grid monitoring
In December 2016, VBMS completed the installation of two 16 kilometre-long 150kV HVAC cables for the Rampion offshore wind farm situated off the coast of Worthing, UK. To overcome some environmental challenges in this very shallow water, VBMS had to extend the pre-installed landfall HDD’s with duct extensions of approx. 480 metres each. VBMS utilised Boskalis’ backhoe dredger Manu Pekka to dredge the trenches before installing the duct extensions. In addition, Boskalis dredged three flotation pits per cable routing to allow CLV Stemat Spirit to reach the location of the end of the ducts. Following the cable pull-in CLV Stemat Spirit jumped from pit to pit during high tides while laying the cable until it reached deeper water where it could safely remain afloat and resume the remaining cabl...
PEFLEX is a cable protection system, manufactured by Pipeline Engineering, used to protect freespan array and export cables on offshore wind farms. Using PEFLEX allows diver-less and ROV-less installation. The PEFLEX design combines a series of interlocking polyurethane vertebrae half sections interspersed with elastomeric sleeves. PEFLEX is positioned at the subsea entry of cables on J-Tube or J-Tubeless connections. Once attached, PEFLEX limits the bending of cables by locking when the minimum bend radius is reached".
Offshore transfer of cable reels
A short video to show the export cable pull in at the Burbo Bank Offshore Windfarm extension. There were some considerable engineering challenges to enable the team to get the cable installed safely. The cable was floated ashore on pillow floats to a small jack up barge then pulled through the tidal and connected to a winch for the final 760 metre pull through a HDD that had been installed 12 months ago. A great achievement for all involved!
Van Heck assisting VBMS with cable injection