Jan De Nul – Cable Replacement on Borkum Riffgrund 01 OWF – June 2019 to August 2019 – 2 Array Subsea Cables
CS was contracted to Jan De Nul for the HV & FO termination & testing works associated with the removal and replacement of 2off faulty subsea cables. WE were responsible for the Termination & Testing of the PCC cables between the Offshore Substation and Wind Turbine Generators, including:
- Mobilising 16 Technicians and 1 Offshore Installation Manager
- Pre-project meetings
- Procurement of High Voltage and Fibre Optical materials
- Site visits
- Creations of RAMS
- Creation of quality documentation
- Project HIRA meetings
- Load out Testing
- Post Lay Testing (continuity, insulation resistance, Time Domain Reflectometry and Optical Time Domain Reflectometry).
- On the OSS & WTG’s offshore assets:
- Assisting SAP’s to create a Safe System of Work
- Cutting of existing array cables ready for extraction
- Stripping the array cables to expose the HV cores and FO cable
- Complete the permanent hang–off
- Route the HV and FO cable into the OSS/WTGS
- Cleat the HV cores from the hang off to the GIS
- Terminate and splice the FO cable into the cabinet
- Terminate three power cores into the GIS
- Complete post installation testing from the onshore substation to the floating asset (IR, TDR & OTDR)
- Deliver an Inspection and Test Plan for the installed and tested system, forming part of key payment milestone.
