Prysmian – Neart Na Gaoithe OWF – July 2022 to October 2022 – 220kV Export Cable Pull-in, Termination & Testing

The Correll Group, Cable Installation & Power Services Division (CIPS) is pleased to announce the successful completion of the first phase of a recent contract awarded by Prysmian Powerlink on EDF Renewables UK and ESB owned Neart na Gaoithe (NnG) offshore wind farm.

The first and completed phase was for the pull-in of a 220kV HVAC export cable to each of two offshore substation platforms. The scope of work also consisted of the internal platform works on the south platform including; securing the subsea cable at the hang-off, stripping, routing & cleating the High Voltage (HV) cores to the switchgear, separating, installing and splicing the fibre optic cables. HV & OTDR testing was also performed following the completion of each export cable.

The second and final phase, scheduled for 2023, will involve the completion of the internal platforms works on the north platform.

CIPS was responsible for:

• Pre-project meetings
• Creation of RAMS
• Post Lay Testing (continuity, insulation resistance, Time Domain Reflectometry and Optical Time Domain Reflectometry).

On the offshore assets:

• • Cable pull of 2 x export cables on 2 x OSS platforms
  • Supply Scaffolding for the support of the cable installation
  • Stripping the export cables to expose the HV cores and FO cable
  • Complete the permanent hang-off
  • Route the HV and FO cable into GIS and Fibre Enclosure
  • Cleat the HV cores from the hang-off to the GIS
  • Terminate and splice the FO cable into the cabinet
  • Assist in the termination of the three power cores into the GIS
  • Complete post installation testing from the onshore substation to the offshore assets (IR, TDR & OTDR).

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