Case Studies

Precision Cable Installation Delivered in Demanding Offshore Conditions

Challenge

• Operating within offshore environmental constraints, including temperature, wind and humidity limits
• Managing confined cable routing through complex, multi-voltage offshore substation structures
• Coordinating delivery across multiple OEMs and contractors within an integrated offshore programme
• Ensuring full compliance with a wide range of standards, including DNV, BS, IEC, ENA and UK transmission codes

Solution

• Implemented structured pre-installation planning, including development of MSRAs, ITPs and coordination with SAP processes
• Delivered cable installation activities using IES-supplied specialist equipment and lifting aids to ensure safe and efficient handling
• Installed Pfisterer MV joints in full accordance with OEM requirements, ensuring performance and reliability
• Completed HV termination works alongside cleat reinstatement to maintain system integrity
• Carried out high-voltage testing with full certification provided for each circuit
• Installed Brattberg cable transit seals to protect GIS penetrations
• Executed all works within defined offshore environmental operating limits, ensuring safety and compliance throughout

Outcome

• Successfully delivered fully compliant MV–HV cable systems aligned with DNV, BS, IEC and ENA standards
• Verified electrical integrity through successful high-voltage testing and certification
• Installed systems designed to support a 25-year offshore platform design life
• Achieved effective delivery within a complex, multi-contractor offshore environment
• Enhanced client confidence through comprehensive documentation, quality assurance and controlled delivery processes