Correll Group

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The Correll Group

Specialising in the renewable energy sector, Correll are a global leader in the provision of engineering, installation and maintenance services - including High Voltage, Low Voltage & Fibre Optic Electrical Engineering, Control Room Asset Monitoring, HV Safety Rules, Construction Support and Service Operations and Maintenance.

Our head office is based in the North East of England, with additional offices and operational bases strategically located in Europe, Asia and the USA to support offshore wind projects.

The Correll Group have extensive experience of working on many of the most significant wind farms across the UK, Europe, Asia, and most recently in the emerging US offshore market, and with a team of over 250 technicians across the business we present a strong and substantial offering to the onshore and offshore renewable energy sector.

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Electrical Engineering
Asset Maintenance
Installation Services
Project Management
Emergency Call-Out

Cable Installation Offshore
Cable Installation Onshore
Power Services Offshore
Supporting Services

Electrical Engineering

Control Room Asset Monitoring
Surveillance
SAP’s
O&M Team
Commissioning

Electrical Engineering

Large fleet of test equipment related to the installation, commissioning and maintenance of offshore wind farms, cables and systems.

Training and Development

Providing bespoke training for HV safety, cable installation, testing, fault location and repairs.

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Prysmian – Fécamp OWF

Prysmian – Fécamp OWF - August 2022 to October 2022 - 220kV Export Cable Pull, Termination and Testing (2 x Export Cables) Correll Cable Installation & Power Services (CIPS) were delighted that Prysmian awarded our organisation the Cable Pull, Termination…

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Seaway Offshore Cables – CFXD Offshore Wind Farm

Seaway Offshore Cables – CFXD OWF - January 2022 to Present - 62 Array and 4 Export Subsea Cables Correll Group, Electrical Engineering Division was awarded their 5th contract associated with an offshore windfarm located in the Taiwan Strait, an…

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Seaway Offshore Cables – Yunlin Offshore Wind Farm

Seaway Offshore Cables – Yunlin OWF - February 2020 to Present - 81 Array and 12 Export Subsea Cables Correll Group, Electrical Engineering Division (CEE) was awarded a third contract associated with an offshore windfarm located in the Taiwan Strait,…

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Prysmian – Neart Na Gaoithe OWF

Prysmian - Neart Na Gaoithe OWF - July 2022 to October 2022 - 220kV Export Cable Pull-in, Termination & Testing Correll Cable Installation & Power Services Division were delighted that Prysmian awarded our organisation the Cable Pull, Termination and Testing…

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Prysmian – Saint Nazire OWF

Prysmian – Saint Nazire OWF - September 2021 to January 2022 - 220kV Export Cable Pull-in, Termination and Testing (2 x Export Cables) Correll were delighted whenPrysmian awarded our organisation the Cable Pull, Termination and Testing contract on St Nazaire.…

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Jan De Nul – Princes Amalia OWF

Jan De Nul - Princes Amalia OWF Cable Repair - October 2021 to January 2022 - Array Cable Pull-in, Termination & Testing Jan De Nul approached Correll to support them with the Cable Pull, HV and FO services associated with…

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Asso Subsea – Kaskasi II OWF

Asso Subsea – Kaskasi II OWF – April 2022 to May 2022 - 155kV Export Cable Pull-in Correll Group were delighted that Asso Subsea awarded our organisation their first contract for the cable pull in contract on the Kaskasi ll…

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Jan De Nul – Formosa 2 OWF

Jan De Nul – Formosa 2 Offshore Wind Farm – January 2022 to September 2022 – 66kV Array & Export Cables Correll Electrical Engineering (CEE) were delighted that Jan De Nul once again chose our company to complete the subsea…

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Prysmian – Hornsea 2 OWF

Prysmian – Hornsea 2 Offshore Wind Farm – August 2021 to June 2022 – 66kV Array & OSS Cables Correll Electrical Engineeing were delighted that Prysmian approached our organisation to take over the Termination and Testing contract on Hornsea 2.…

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Global Offshore – Kriegers Flak OWF

Global Offshore – Kreigers Flak Cable Repair OWF (Denmark) – October 2020 to February 2022 – Array Termination and Testing Global Offshore approached Correll Electrical Engineering (CEE) to support them with the HV and FO services associated with the Kreigers…

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LS Cables Greater Changhua Singapore

LS Cables – Greater Changhua (Singapore) 2 x Onshore Substations – December 2020 to July 2021 – 154, 66kV terminations and 16, 230kV terminations. Correll Services has been awarded a fifth contract associated with an offshore windfarm located in the Taiwan Strait, we are delighted to continue our involvement in the Taiwan market…

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Seaway Offshore Cables – Costal Virginia (USA) OWF

Seaway Offshore Cables – Costal Virginia (USA) OWF - February 2020 to September 2020 – 2 Array and 1 Export cable Correll Services is delighted to have been awarded a contract for the Cable Pull-in, Termination & Testing on such…

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Sumitomo/RevElie – Akita & Noshiro OWF (Mockup)

Sumitomo/RevElie – Akita & Noshiro OWF (Mockup) –November 2020 to December 2020 CS were approached to support them with cable pull in, HV and FO services associated with the mock-up in Belgium for the Akita & Noshiro OWF that will be installed in Japan. The purpose of the mock-up is to identify interfaces at this stage to prevent major delays offshore. The European experience was influential…

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Global Offshore – Block Island OWF Cable Repair

Global Offshore – Block Island OWF Cable Repair - August 2020 to May 2021 – 1 Export Subsea Cable Global Offshore approached CS to support them with HV and FO services associated with the Block Island cable repair/replacement project in the USA. This is the…

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Siem Offshore Contractors – Hornsea OWF

Siem Offshore Contractors – Hornsea OWF - September 2018 to April 2019 Correll Services was contracted to Seaway Offshore Cables (SOC) to provide support with four HV/FO project engineers, performing the following activities: Project procedures and handover documentation Cable pull assistance and supervision on the TP’s and OSS …

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GE – Merkur OWF

GE – Merkur OWF – July 2018 to May 2019 Correll Group, HV Management Division was contracted to RTS Wind AG/GE and provided support with 32 HV and LV Electrical Technicians (SAP's & AP's), performing the following activities on the WTG: Completing…

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Global Offshore – DanTysk OWF Cable Repair

Global Offshore – DanTysk OWF Cable Repair – February 2020 to March 2020 – 1 Array Cable Global Offshore approached CS to support them with HV and FO services associated with the Dan Tysk cable repair/replacement project. We were responsible for the Termination…

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Briggs Marine – Burbo Bank OWF Export Cable

Briggs Marine – Burbo Bank OWF Export Cable – April 2019 Correll Services was contacted and mobilised at very short notice to fault find on a subsea export cable. Utilising four HV/FO testing technicians working from each end of the cable, we successfully located the fault 20-25 metres outside the onshore substation. We completed the fault-finding process using the following equipment: Bridge…

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Briggs Marine – Various Inter Island Export Cables

Briggs Marine – Various Inter Island Export Cables around Scotland & Transformer Inspections – May 2019 to August 2019 Correll Services was contracted to Briggs Marine to complete cable jointing and testing works on the subsea cables between island’s in and around the Scottish Western Isles. The works included: Fabrication of project RAM’s Conducting project meetings VLF Testing …

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Global Marine Systems – Shetland Islands

Global Marine Systems - Shetland Islands – February 2019 to September 2019 – 3 Subsea to Land Cables Correll Services was contracted by Global Marine Systems to complete cable jointing and testing works on the subsea and land cables between island’s in Shetland. The works included: Fabrication of project RAM’s Conducting project meetings Post load out testing, Time Domain…

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Jan De Nul – Formosa 1 (Phase 2) Offshore Wind Farm

Jan De Nul – Formosa 1 (Phase 2) Offshore Wind Farm – January 2019 to October 2019 - 17 Array and 3 Export Cables Correll Services was delighted that Jan De Nul selected our company to complete the termination & testing on the first major offshore wind farm in waters around Taiwan. On the project, CS was responsible for: Pre-project meetings Site visits Creations…

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Seaway Offshore Contractors – 66kV Pre-Qualification Termination & Jointing Activities

Seaway Offshore Contractors – 66kV Pre-Qualification Termination & Jointing Activities – June 2019 to February 2020 CS was engaged by SOC to carry out the installation of four different manufacturers HV products being considered for use on a OWF being constructed in Taiwan. The 66kV cable termination works…

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ORE Catapult – GE Haliade-X

ORE Catapult – GE Haliade-X 66kV OWT – February 2020 CS was the first company to train HV technicians in the use of Tyco Electrical 66kV components. As a consequence of this achievement, CS was approached by ORE Catapult/GE to complete in-line jointing and…

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Jan De Nul – Changhua Demonstration (TPC) Offshore Wind Farm

Jan De Nul – Changhua Demonstration (TPC) Offshore Wind Farm – November 2019 to October 2021 – 23 Array & 4 Export Cables Following the successful delivery of the Formosa 1 (phase 2) OWF in Taiwan, CS was delighted that Jan De Nul once again chose our company to complete the subsea cable termination & testing works on the second OWF being constructed in Taiwan…

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CJS – Mariner Rig

CJS – Mariner Rig – March 2018 – April 2018 Correll Services was contracted to CJS and provided support with the following activities on the Mariner Platform: Routing of HV cables on the platform Perform cable jointing works Perform post installation cable…

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Transmission Investment – Westermost Rough Onshore Substation

Transmission Investment – Westermost Rough Onshore Substation – July 2018 Correll Services was awarded a contract to upgrade 2 x Neutral Earth systems on the 220kV transformers.

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Vattenfall – Aberdeen OWF

Vattenfall – Aberdeen OWF - February 2018 to July 2018 Correll Services was contracted by Vattenfall to provide expertise on one of the first 66kV Offshore Wind Farms. We at CS felt privileged to be awarded the contract by a world leader within the industry. Our remit was to ensure the subcontractor delivered a first-class installation and…

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CJS – Ford Innovation Factory

CJS – Ford Innovation Factory – March 2018 Correll Services was contracted to complete the following works at the Ford Innovation Factory based in Basildon: Spiking of 11kV cables Preparation of joint pit Cable preparation & jointing of 11kV Raychem straight through joints…

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Prysmian – Fécamp OWF

Prysmian – Fécamp OWF - August 2022 to October 2022 - 220kV Export Cable Pull, Termination and Testing (2 x Export Cables)

Correll Cable Installation & Power Services (CIPS) were delighted that Prysmian awarded our organisation the Cable Pull, Termination and Testing contract on Fécamp. We are very privileged to be involved in the first ever French Offshore Wind Farm.

CIPS is 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.

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

Terminate three power cores into the GIS

Complete post installation testing from the onshore substation to the offshore assets (IR, TDR & OTDR)

Deliver an Inspection and Test Plan for the installed and tested system, forming part of key payment milestone.

Seaway Offshore Cables – CFXD Offshore Wind Farm

Seaway Offshore Cables – CFXD OWF - January 2022 to Present - 62 Array and 4 Export Subsea Cables

Correll Group, Electrical Engineering Division was awarded their 5th contract associated with an offshore windfarm located in the Taiwan Strait, an endorsement which firmly establishes our reputation and position in a global market. CFXD consists of 62 WTG’s.

The summary of T & T work includes:

Pre-project meetings

Site visits

Assistance of creation of associated documentation

Project HIRA meetings

Mock-up trials

Mobilisation of PPE & tools via a 20ft container

Visa & Work Permit applications

Post Lay Testing (continuity, insulation resistance, Time Domain Reflectometry and Optical Time Domain Reflectometry).

On the offshore assets:

Tower mobilisation and preparation

Route the HV and FO cable into the TP/WTGS

Cleat the HV cores from the hang-off to the GIS

Terminate and splice the FO cable into the cabinet

Terminate power cores (66kV) into the GIS

Complete post installation testing from the onshore substation to the offshore asset (DAC, IR, TDR & OTDR)

Deliver an Inspection and Test Plan of the installed and tested system, forming part of key payment milestone.

Deliver an Inspection and Test Plan for the installed and tested system, forming part of key payment milestone.

Seaway Offshore Cables – Yunlin Offshore Wind Farm

Seaway Offshore Cables – Yunlin OWF - February 2020 to Present - 81 Array and 12 Export Subsea Cables

Correll Group, Electrical Engineering Division (CEE) was awarded a third contract associated with an offshore windfarm located in the Taiwan Strait, an endorsement which firmly establishes our reputation and position in a global market. Yunlin consists of 80 WTG’s and is the first 66kV OWF to be constructed in the region. CEE was fully involved in the Type-Testing & Pre-Qualification processes conducted at the array and export cable manufacturers facilities in Japan and South Korea respectively.

The summary of T & T work includes:

Pre-project meetings

Site visits

Type-Testing & Pre-Qualification of 66kV cables at manufacturers facilities

Creation of associated documentation

Project HIRA meetings

Mock-up trials

Mobilisation of PPE & tools via a 20ft container

Visa & Work Permit applications

Post Lay Testing (continuity, insulation resistance, Time Domain Reflectometry and Optical Time Domain Reflectometry).

On the offshore assets:

Tower mobilisation and preparation

Route the HV and FO cable into the TP/WTGS

Cleat the HV cores from the hang-off to the GIS

Terminate and splice the FO cable into the cabinet

Terminate power cores (66kV) into the GIS

Complete post installation testing from the onshore substation to the offshore asset (VLF, IR, TDR & OTDR)

Deliver an Inspection and Test Plan of the installed and tested system, forming part of key payment milestone.

Prysmian – Neart Na Gaoithe OWF

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

Correll Cable Installation & Power Services Division were delighted that Prysmian awarded our organisation the Cable Pull, Termination and Testing contract on Neart Na Gaoithe. We are very privileged to be involved in the Scottish Offshore Wind Farm . 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:

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)
- Deliver an Inspection and Test Plan for the installed and tested system, forming part of key payment milestone.

Prysmian – Saint Nazire OWF

Prysmian – Saint Nazire OWF - September 2021 to January 2022 - 220kV Export Cable Pull-in, Termination and Testing (2 x Export Cables)

Correll were delighted whenPrysmian awarded our organisation the Cable Pull, Termination and Testing contract on St Nazaire. We feel very privileged to be involved in the first ever French Offshore Wind Farm .

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.

- 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
- Terminate three power cores into the GIS
- Complete post installation testing from the onshore substation to the offshore assets (IR, TDR & OTDR)
- Deliver an Inspection and Test Plan for the installed and tested system, forming part of key payment milestone.

Jan De Nul – Princes Amalia OWF

Jan De Nul - Princes Amalia OWF Cable Repair - October 2021 to January 2022 - Array Cable Pull-in, Termination & Testing

Jan De Nul approached Correll to support them with the Cable Pull, HV and FO services associated with the Princes Amalia cable repair/replacement project. Correll were responsible for the Termination & Testing of the IAG cables between Wind Turbine Generators, including:

Mobilising 20 Technicians and 2 Offshore Installation Manager

Pre-project meetings

Procurement of High Voltage and Fibre Optical materials

Site visits

Creation of RAMS

Creation of quality documentation

Project HIRA meetings

Post Lay Testing (continuity, insulation resistance, Time Domain Reflectometry and Optical Time Domain Reflectometry).

On the offshore assets:
- Cutting of existing array cables ready for extraction
- Cable Pull operation.
- 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 power cores into the GIS
- Deliver an Inspection and Test Plan for the installed and tested system, forming part of key payment milestone.

Asso Subsea – Kaskasi II OWF

Asso Subsea – Kaskasi II OWF – April 2022 to May 2022 - 155kV Export Cable Pull-in

Correll Group were delighted that Asso Subsea awarded our organisation their first contract for the cable pull in contract on the Kaskasi ll project. Correll 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 export cables between 2 x platforms
- Installation of the cable pull-in quadrants
- Tone generation testing
- Deliver an Inspection and Test Plan for the installed and tested system, forming part of key payment milestone.

Jan De Nul – Formosa 2 OWF

Jan De Nul – Formosa 2 Offshore Wind Farm – January 2022 to September 2022 – 66kV Array & Export Cables

Correll Electrical Engineering (CEE) were delighted that Jan De Nul once again chose our company to complete the subsea cable termination & testing works on their 3^rd contract Taiwan waters. The Formosa 2 project will be managed through our Taiwan Brach with the HQ in Taipei, we shall be deploying our two local technicians onto the project throughout.

On the Formosa 2 project, Correll Services was responsible for:

Pre-project meetings

Site visits

Creation of RAMS

Mock-up trials at Switchgear and TP manufacturers facilities in Indonesia.

Creation of quality documentation

Project HIRA meetings

Post Lay Testing (continuity, insulation resistance, Time Domain Reflectometry and Optical Time Domain Reflectometry).

Onshore export cable stripping and routing

Onshore export jointing of the HV & FO cables

On the offshore assets:

Stripping the export cables to expose the HV cores and FO cable

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 TP/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 offshore assets (VLF, IR, TDR & OTDR)

Deliver an Inspection and Test Plan for the installed and tested system, forming part of key payment milestone.

Prysmian – Hornsea 2 OWF

Prysmian – Hornsea 2 Offshore Wind Farm – August 2021 to June 2022 – 66kV Array & OSS Cables

Correll Electrical Engineeing were delighted that Prysmian approached our organisation to take over the Termination and Testing contract on Hornsea 2. The Hornsea 2 project is being managed by our UK team based at our HQ depot in Skelton, North-East England. Correll Services is responsible for:

Pre-project meetings

Evaluate existing RAMS

Post Lay Testing (continuity, insulation resistance, Time Domain Reflectometry and Optical Time Domain Reflectometry).

On the offshore assets:

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 TP/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 offshore assets (IR, TDR & OTDR)

Deliver an Inspection and Test Plan for the installed and tested system, forming part of key payment milestone.

Global Offshore – Kriegers Flak OWF

Global Offshore – Kreigers Flak Cable Repair OWF (Denmark) – October 2020 to February 2022 – Array Termination and Testing

Global Offshore approached Correll Electrical Engineering (CEE) to support them with the HV and FO services associated with the Kreigers Flak cable repair/replacement project.

CEE were responsible for the Termination & Testing of the IAG cables between Wind Turbine Generators, including:

Mobilising 20 Technicians and 2 Offshore Installation Manager

Pre-project meetings

Site visits

Creation of RAMS

Creation of quality documentation

Project HIRA meetings

Post Lay Testing (continuity, insulation resistance, Time Domain Reflectometry and Optical Time Domain Reflectometry).

On the offshore assets:

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 power cores into the GIS

Deliver an Inspection and Test Plan for the installed and tested system, forming part of key payment milestone.

LS Cables Greater Changhua Singapore

LS Cables – Greater Changhua (Singapore) 2 x Onshore Substations – December 2020 to July 2021 – 154, 66kV terminations and 16, 230kV terminations.

Correll Services has been awarded a fifth contract associated with an offshore windfarm located in the Taiwan Strait, we are delighted to continue our involvement in the Taiwan market and integrate local content. The summary of T & T work includes:

Pre-project meetings

Site visits (if COVID-19 19 restrictions allow)

Creations of associated documentation

Project HIRA meetings

Mobilisation of PPE & tools via a 20ft container

Visa & Work Permit applications

Mobilise 5 x Management team and 25 EHV/HV Jointers

On the 2 x onshore substations assets:
- OSS mobilisation and preparation
- Route the (66kV & 230kV) HV cable into the GIS
- Cleat the HV cores to the GIS
- Terminate power cores (66kV & 230kV) into the GIS
- Deliver an Inspection and Test Plan of the installed and tested system, forming part of key payment milestone.

Seaway Offshore Cables – Costal Virginia (USA) OWF

Seaway Offshore Cables – Costal Virginia (USA) OWF - February 2020 to September 2020 – 2 Array and 1 Export cable

Correll Services is delighted to have been awarded a contract for the Cable Pull-in, Termination & Testing on such a prestigious project. We are particularly pleased that SOC has agreed to trial our unique concept of utilising an ‘Integrated Cable-pull, T & T Team’ for completion of the subsea cabling works within the OTG. We are in the process of opening a CS branch in the USA which shall be used as a base for future offshore renewable energy projects in the region. On the Coastal Virginia project, CS is responsible for:

Pre-project meetings

Site visits

Mock-up trials

Creations of RAMS

Project HIRA meetings

Mobilisation of PPE, tools & test equipment via a 20ft container to the USA

Visa applications

Post Lay Testing (continuity, insulation resistance, Time Domain Reflectometry and Optical Time Domain Reflectometry).

On the offshore assets:
- Tower mobilisation and preparation
- Cable pull-in
- Installation of temporary hang-off
- Stripping the export cable to expose HV cores and fibre optical cable
- Stripping the array cables to expose HV cores and fibre optical cable
- Complete the permanent hang-off
- Route the HV and FO cable into the TP/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 offshore asset (VLF, IR, TDR & OTDR)
- Deliver an Inspection and Test Plan of the installed and tested system, forming part of key payment milestone.

Due to unforeseen circumstance on the project damaged occurred to the export cable subsea by a vessel not associated to the project, Correll Services completed 2 x subsea repair works on the export cable, we installed 2 x Prysmian subsea joints.

Sumitomo/RevElie – Akita & Noshiro OWF (Mockup)

Sumitomo/RevElie – Akita & Noshiro OWF (Mockup) –November 2020 to December 2020

CS were approached to support them with cable pull in, HV and FO services associated with the mock-up in Belgium for the Akita & Noshiro OWF that will be installed in Japan. The purpose of the mock-up is to identify interfaces at this stage to prevent major delays offshore. The European experience was influential and provided a great insight to the Japanese at the beginning of the OWF construction.

CS were responsible for the following,

Reviewing associated cable pull and termination and testing documentation.

Mobilising 4 Technicians

Pre-project meetings

Set up pre rig equipment for the cable pull in

Preventative housekeeping measures

Pulling the cable into the asset

Stripping the demo subsea cable to expose the HV cores and fibre optical cable

Complete the permanent hang off

Route the HV and FO cable into the asset

Install transit blocks around the HV core and FO cable

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 report and highlighting potential issues

Attending a post mock up meeting

Advise the client of any tools and equipment required for the offshore campaign.

Global Offshore – Block Island OWF Cable Repair

Global Offshore – Block Island OWF Cable Repair - August 2020 to May 2021 – 1 Export Subsea Cable

Global Offshore approached CS to support them with HV and FO services associated with the Block Island cable repair/replacement project in the USA. This is the second contract for Correll Services in the USA associated to OWF’s cable repairs. We are responsible for the Jointing & Testing of the Export cables between Land and the Wind Turbine Generator, including:

Mobilising 6 Technicians and 1 Offshore Installation Manager

Pre-project meetings

Site visits (jointing habitat)

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 offshore CLV & assets:
- Cutting of existing Export cable
- Stripping the Export cables to expose the HV cores and FO cable
- Complete the 33kV Power CSL subsea Joint.
- Deliver an Inspection and Test Plan for the installed and tested system, forming part of key payment milestone.

Siem Offshore Contractors – Hornsea OWF

Siem Offshore Contractors – Hornsea OWF - September 2018 to April 2019

Correll Services was contracted to Seaway Offshore Cables (SOC) to provide support with four HV/FO project engineers, performing the following activities:

Project procedures and handover documentation

Cable pull assistance and supervision on the TP’s and OSS

FO assistance, termination/testing methods, selection of equipment and materials associated to the FO Installation

HV assistance, termination/testing methods, selection of equipment and materials associated to the FO Installation

GE – Merkur OWF

GE – Merkur OWF – July 2018 to May 2019

Correll Group, HV Management Division was contracted to RTS Wind AG/GE and provided support with 32 HV and LV Electrical Technicians (SAP's & AP's), performing the following activities on the WTG:

Completing works as team leaders of contracted companies

Conducted HV switching operations and isolations

Completing HV terminations on the transformer and GIS cable

Completing LV works as per GE task cards

Completing LV testing, IR, continuity and function tests

Terminations of LV cables into the junction boxes

Installation of fibre optical cable and termination

Global Offshore – DanTysk OWF Cable Repair

Global Offshore – DanTysk OWF Cable Repair – February 2020 to March 2020 – 1 Array Cable

Global Offshore approached CS to support them with HV and FO services associated with the Dan Tysk cable repair/replacement project. We were responsible for the Termination & Testing of the IAG cables between Wind Turbine Generators, including:

Mobilising 20 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 offshore assets:
- 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 power cores into the GIS
- Deliver an Inspection and Test Plan for the installed and tested system, forming part of key payment milestone.

Briggs Marine – Burbo Bank OWF Export Cable

Briggs Marine – Burbo Bank OWF Export Cable – April 2019

Correll Services was contacted and mobilised at very short notice to fault find on a subsea export cable. Utilising four HV/FO testing technicians working from each end of the cable, we successfully located the fault 20-25 metres outside the onshore substation. We completed the fault-finding process using the following equipment:

Bridge tester (HVB10)

Surge Tester (Thumper)

Optical Time Domain Reflectometry (OTDR)

Briggs Marine – Various Inter Island Export Cables

Briggs Marine – Various Inter Island Export Cables around Scotland & Transformer Inspections – May 2019 to August 2019

Correll Services was contracted to Briggs Marine to complete cable jointing and testing works on the subsea cables between island’s in and around the Scottish Western Isles. The works included:

Fabrication of project RAM’s

Conducting project meetings

VLF Testing

Post load out testing,
- Time Domain Reflectometry (open & closed)
- Optical Time Domain Reflectometry (Unidirectional)
- Setup of Fibre Optical monitoring system within the carousel

Post Lay Testing
- Time Domain Reflectometry (open & closed)
- Optical Time Domain Reflectometry

FO Jointing subsea cables to onshore land cables

Transformer Inspections

Completion of ITP documentation for issue to the client

Global Marine Systems – Shetland Islands

Global Marine Systems - Shetland Islands – February 2019 to September 2019 – 3 Subsea to Land Cables

Correll Services was contracted by Global Marine Systems to complete cable jointing and testing works on the subsea and land cables between island’s in Shetland. The works included:

Fabrication of project RAM’s

Conducting project meetings

Post load out testing,
- Time Domain Reflectometry (open & closed)
- Optical Time Domain Reflectometry (unidirectional)
- Setup of Fibre Optical monitoring system within the carousel

Post Lay Testing
- Time Domain Reflectometry (open & closed)
- Optical Time Domain Reflectometry

HV/FO Jointing subsea cables to onshore land cables

Through Joints on the land cables

Pole terminations

Very Low Frequency testing

Completion of ITP documentation for issue to the client

During back-filling activities, the civil contractor damaged a land cable, CS subsequently performed fault-finding procedures to successfully locate the damaged position, using the following items:

Bridge tester (HVB10)

Surge Tester (Thumper)

Jan De Nul – Formosa 1 (Phase 2) Offshore Wind Farm

Jan De Nul – Formosa 1 (Phase 2) Offshore Wind Farm – January 2019 to October 2019 - 17 Array and 3 Export Cables

Correll Services was delighted that Jan De Nul selected our company to complete the termination & testing on the first major offshore wind farm in waters around Taiwan. On the project, CS was responsible for:

Pre-project meetings

Site visits

Creations of RAMS

Creation of quality documentation

Project HIRA meetings

Mock-up trials at TP manufacturers facility in Thailand

Post Lay Testing (continuity, IR, TDR & OTDR).

Onshore export cable stripping and routing

Onshore export jointing of the HV & FO cables

Onshore substation HV & FO cable routing, cleating and termination

On the 22 offshore assets:
- Stripping the export cable to expose the HV cores and FO cable
- 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 TP/WTGS
- Cleat the HV cores from 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 offshore assets (VLF, IR, TDR & OTDR)
- Deliver an Inspection and Test Plan for the installed and tested system, forming part of key payment milestone.

Seaway Offshore Contractors – 66kV Pre-Qualification Termination & Jointing Activities

Seaway Offshore Contractors – 66kV Pre-Qualification Termination & Jointing Activities – June 2019 to February 2020

CS was engaged by SOC to carry out the installation of four different manufacturers HV products being considered for use on a OWF being constructed in Taiwan. The 66kV cable termination works were performed at cable manufacturers facilities in both Japan and South Korea.

Procure 66kV Termination kits

Terminate 66kV array cables at manufacturers facility

Terminate 66kV export cables at manufacturers facility

Terminations performed using 66kV products manufactured by; Pfisterer, Nexans, NKT and Tyco.

Additional to the above detailed scope of works, we supported with Electrical Engineering and coordination activities for the project.

ORE Catapult – GE Haliade-X

ORE Catapult – GE Haliade-X 66kV OWT – February 2020

CS was the first company to train HV technicians in the use of Tyco Electrical 66kV components. As a consequence of this achievement, CS was approached by ORE Catapult/GE to complete in-line jointing and T-connections associated with the GE Haliade-X 12MW OWT, presently undergoing trials at the Catapult facility in Blyth.

Jan De Nul – Changhua Demonstration (TPC) Offshore Wind Farm

Jan De Nul – Changhua Demonstration (TPC) Offshore Wind Farm – November 2019 to October 2021 – 23 Array & 4 Export Cables

Following the successful delivery of the Formosa 1 (phase 2) OWF in Taiwan, CS was delighted that Jan De Nul once again chose our company to complete the subsea cable termination & testing works on the second OWF being constructed in Taiwan waters. To support this and future projects in the region, Correll Services has opened an operation in Taiwan, staffed by Branch Manager Ray Tsao and Project Coordinator Fiona Su. We shall be investing in the community in terms of training local operatives and development of a regional supply chain. On the Changhua project, Correll Services is responsible for:

Pre-project meetings

Site visits

Creations of RAMS

Procurement of HV & FO Materials

Mock-up trials at Switchgear and TP manufacturers facilities in Japan and South Korea respectively.

Creation of quality documentation

Project HIRA meetings

Post Lay Testing (continuity, insulation resistance, Time Domain Reflectometry and Optical Time Domain Reflectometry).

Onshore export cable stripping and routing

Onshore export jointing of the HV & FO cables

On the 21 offshore assets:
- Stripping the export cables to expose the HV cores and FO cable
- 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 TP/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 offshore assets (VLF, IR, TDR & OTDR)
- Deliver an Inspection and Test Plan for the installed and tested system, forming part of key payment milestone.

CJS – Mariner Rig

CJS – Mariner Rig – March 2018 – April 2018

Correll Services was contracted to CJS and provided support with the following activities on the Mariner Platform:

Routing of HV cables on the platform

Perform cable jointing works

Perform post installation cable testing

Transmission Investment – Westermost Rough Onshore Substation

Transmission Investment – Westermost Rough Onshore Substation – July 2018

Correll Services was awarded a contract to upgrade 2 x Neutral Earth systems on the 220kV transformers.

Vattenfall – Aberdeen OWF

Vattenfall – Aberdeen OWF - February 2018 to July 2018

Correll Services was contracted by Vattenfall to provide expertise on one of the first 66kV Offshore Wind Farms. We at CS felt privileged to be awarded the contract by a world leader within the industry. Our remit was to ensure the subcontractor delivered a first-class installation and performed testing activities correctly, including:

Assisting with project RAM’s

Attending project meetings

Attending offshore works ensuring the contractors performs the installation correctly on:
- Array cable Hang-off system
- Stripping off armours, power cores and fibre optical cable
- Routing and cleating
- Termination on the HV/FO cable
- Onshore jointing works at transition joint pit
- Post termination testing on the HV/FO cable
- Reviewing and signing-off ITP documentation

CJS – Ford Innovation Factory

CJS – Ford Innovation Factory – March 2018

Correll Services was contracted to complete the following works at the Ford Innovation Factory based in Basildon:

Spiking of 11kV cables

Preparation of joint pit

Cable preparation & jointing of 11kV Raychem straight through joints on XLPE cable

Latest News

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23 Nov

Military man lands new wind job thanks to AIS Survivex programme

A training programme to reskill former military personnel for the wind industry has helped army mechanic, Jack Taylor scoop a…

15 Nov

Correll Group announces the appointment of 3 new board members

24 Oct

Correll Group awarded contract for Arcadis Ost 1 Offshore Wind Farm

30 Sep

Correll completes Neart na Gaoithe Cable Pull-In

26 Aug

Correll to deliver bespoke turnkey solution for Fécamp Offshore Wind Farm

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Prysmian – Fécamp OWF

Seaway Offshore Cables – CFXD Offshore Wind Farm

Seaway Offshore Cables – Yunlin Offshore Wind Farm

Prysmian – Neart Na Gaoithe OWF

Prysmian – Saint Nazire OWF

Jan De Nul – Princes Amalia OWF

Asso Subsea – Kaskasi II OWF

Jan De Nul – Formosa 2 OWF

Prysmian – Hornsea 2 OWF

Global Offshore – Kriegers Flak OWF

LS Cables Greater Changhua Singapore

Seaway Offshore Cables – Costal Virginia (USA) OWF

Sumitomo/RevElie – Akita & Noshiro OWF (Mockup)

Global Offshore – Block Island OWF Cable Repair

Siem Offshore Contractors – Hornsea OWF

GE – Merkur OWF

Global Offshore – DanTysk OWF Cable Repair

Briggs Marine – Burbo Bank OWF Export Cable

Briggs Marine – Various Inter Island Export Cables

Global Marine Systems – Shetland Islands

Jan De Nul – Formosa 1 (Phase 2) Offshore Wind Farm

Seaway Offshore Contractors – 66kV Pre-Qualification Termination & Jointing Activities

ORE Catapult – GE Haliade-X

Jan De Nul – Changhua Demonstration (TPC) Offshore Wind Farm

CJS – Mariner Rig

Transmission Investment – Westermost Rough Onshore Substation

Vattenfall – Aberdeen OWF

CJS – Ford Innovation Factory

Prysmian – Fécamp OWF

Seaway Offshore Cables – CFXD Offshore Wind Farm

Seaway Offshore Cables – Yunlin Offshore Wind Farm

Prysmian – Neart Na Gaoithe OWF

Prysmian – Saint Nazire OWF

Jan De Nul – Princes Amalia OWF

Asso Subsea – Kaskasi II OWF

Jan De Nul – Formosa 2 OWF

Prysmian – Hornsea 2 OWF

Global Offshore – Kriegers Flak OWF

LS Cables Greater Changhua Singapore

Seaway Offshore Cables – Costal Virginia (USA) OWF

Sumitomo/RevElie – Akita & Noshiro OWF (Mockup)

Global Offshore – Block Island OWF Cable Repair

Siem Offshore Contractors – Hornsea OWF

GE – Merkur OWF

Global Offshore – DanTysk OWF Cable Repair

Briggs Marine – Burbo Bank OWF Export Cable

Briggs Marine – Various Inter Island Export Cables

Global Marine Systems – Shetland Islands

Jan De Nul – Formosa 1 (Phase 2) Offshore Wind Farm

Seaway Offshore Contractors – 66kV Pre-Qualification Termination & Jointing Activities

ORE Catapult – GE Haliade-X

Jan De Nul – Changhua Demonstration (TPC) Offshore Wind Farm

CJS – Mariner Rig

Transmission Investment – Westermost Rough Onshore Substation

Vattenfall – Aberdeen OWF

CJS – Ford Innovation Factory

Latest News

Military man lands new wind job thanks to AIS Survivex programme

Correll Group announces the appointment of 3 new board members

Correll Group awarded contract for Arcadis Ost 1 Offshore Wind Farm

Correll completes Neart na Gaoithe Cable Pull-In

Correll to deliver bespoke turnkey solution for Fécamp Offshore Wind Farm

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