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Kahramaa Project - Phase 2

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Asso.subsea > Projects > Cable Laying > Kahramaa Project - Phase 2


Kahramaa (Qatar general Electricity & Water Corporation) had appointed Prysmian Cavi è Sistemi Energia SrL for a power transimission system expansion project, which was to develop the country's first ever submarine power link serving Qatar.

The project in general required the engineering, construction, installation and commissioning services for high and extra high voltage underground and underwater power cables  for a total of 131km of 220kV and 77km of 132kV cables and other relative products.

The contract between Prysmian and Assodivers involved the installation and protection of six underwater cables accross the Doha's port. Each cable was installed on parallel route of each other and had a continous total length of 6.2km.

As the project was executed in two campaigns on 2010 and 2011 respectively, each campaign was representing a circuit of three cables each. In addition, two FO cables were attached with a power cable on the central route of each circuit.

The power and optical cables were produced in Prysmian factory at Arco Felice, Italy. The six cable lengths were loaded on the cable laying barge 'Atalanti' and transported to Doha. The vessel was also used for the cable laying, since with its low draft it could pass all over the laying route.

Conduits were present at both landing areas, through which the cables were pulled during the landing activity; polyethylene pipelines, about 150 m long, were preinstalled at West Bay shore, while at Ras Abu Aboud shore end 50 m long pipes were preinstalled in trenches.

At sea the cables were buried to a target burial depth (coverage depth) of 1.0 m, using either 'AssoTrencher VIII' trenching vehicle or 'AssoJet II' jetting vehicle, depending on the soil features. Further additional protection by mattresses was also implemented on specific crossings with other services.

PROJECT SPECIFICATIONS

  • Owner
    KAHRAMAA
  • Contractor
    Prysmian Cavi è Sistemi Energia SrL
  • Year
    2011
  • Cable Type
    fo
  • Cable Diameter
    146.9mm
  • Cable Weight
    Power: 60.45kg/m FO: 3.4kg/m
  • Laying Length
    8,530m @ 1.0m
  • Trenching Length & Burial Depth
    13,200m @ 1.0m
  • Jetting Length & Burial Depth
    8,530m @ 1.0m
  • Max Water Depth
    12m

    Kahramaa Project - Phase 2

    Kahramaa (Qatar general Electricity & Water Corporation) had appointed Prysmian Cavi è Sistemi Energia SrL for a power transimission system expansion project, which was to develop the country's first ever submarine power link serving Qatar. Th ...

    Learn More
    Kahramaa Project - Phase 2

    SERVICES PROVIDED

    Some of the services we provided for Kahramaa Project - Phase 2 

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    VESSELS USED

    • Atalanti

      DP II - Cable Laying Vessel The Atalanti is a DP-2 Cable Laying Vessel that has been specially ...

      Atalanti Cable Laying Vessels

    • Astrea

      DP II - Multipurpose Support Vessel The Astrea is a DP-2 Multipurpose Support Vessel built for worldwide operations ...

      Astrea General Support Vessels

    EQUIPMENT USED

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