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IFA2 HVDC Interconnection France Angleterre Photo 2

IFA2 HVDC Interconnection (France – UK)- Subsea Cable Protection

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The IFA2 project concerns the HVDC electricity transmission interconnector between France and England across the English Channel. The French landfall in North of Caen, at Merville-Franceville, in the Baie de Seine, and the English landfall is at Daedalus, in the Solent and Approaches. The route length of the main HVDC interconnection (2x bundles power cables + FO Cable) is in the order of 204km. Boulder removal activities as well as Post-lay burial activities for #C3 were executed between September 2019 and February 2020.

Prysmian has awarded Asso a contract for the execution of perform Post Lay Burial activities by means of Mechanical Trenching and subsequently as-buried survey operations for approximately 109,600m across the HVDC route.

 Asso’s scope of work included:

  • Preparation Activities//Mobilization-Demobilization
  • Post Lay Burial by means of Trenching 

PROJECT SPECIFICATIONS

  • Owner
    National Grid and Réseau de Transport d’Electricité (RTE)
  • Contractor
    Prysmian PowerLink SrL
  • Year
    2019
  • Location
    UK/France
  • Cable Type
    fo, hvdc
  • Cable Diameter
    140.7 mm (24mm FO)
  • Trenching Length & Burial Depth
    109600m @ 1.0m, 1.5m and 2.0m
  • Max Water Depth
    70m

    IFA2 HVDC Interconnection (France – UK)- Subsea Cable Protection

    The IFA2 project concerns the HVDC electricity transmission interconnector between France and England across the English Channel. The French landfall in North of Caen, at Merville-Franceville, in the Baie de Seine, and the English landfall is at Daedal …

    IFA2 HVDC Interconnection (France – UK)- Subsea Cable Protection

SERVICES PROVIDED

Some of the services we provided for IFA2 HVDC Interconnection (France – UK)- Subsea Cable Protection 

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VESSELS USED

  • Aethra

    DP II – Trenching Support Vessel The Aethra is a DP-2 Trenching Support Vessel built for worldwide operations, …

    Aethra Trenching Support Vessels

EQUIPMENT USED

  • Multi-functional Plough

    The Multi-Functional Pre-Lay Plough represents the latest investment of ASSO Group in order to cover the constantly evolving …

    Multi-functional Plough Pre-Trenching/Boulder Clearance, Seabed Preparation Equipment

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