Philson engineers this offshore cable hang-off system for applications in offshore wind farms and oil & gas platforms. The system provides reliable fixation for medium- and high-voltage power cables at the top of foundations, including monopiles, jackets, or rigs.
Philson offers an optional sealing module to ensure complete sealing of the annulus between the riser and the J-tube. Additionally, the topside hang-off clamp features a pre-installed continuous housing structure, which allows for rapid deployment prior to riser pull-in.
Key System Advantage
Rapid Installation: The modular design supports quick and efficient assembly.
Enhanced Cable Protection: The system maintains a temporary clamping pressure of < 3 MPa, which is significantly lower than most conventional solutions.
Layout Optimization: The refined design reduces the distance between the hang-off flange and the cable core termination, facilitating easier routing and installation.
Superior Sealing: The system, specifically designed for monopile foundations, delivers sealing performance tested at > 3 bar, far exceeding the industry standard of 1 bar.
Health, Safety, and Environment (HSE) Compliance: The system reduces the required sealing resin to only 2–3 liters (compared to approximately 10 liters in traditional designs), which significantly lowers health and safety risks for construction teams.
Applications of Cable Hang-Off
Philson’s Cable Hang-Off Systems support a wide range of offshore wind infrastructure applications, including:
Offshore Wind Monopile Foundations: The systems provide secure load-bearing support at the topside of monopile structures.
Jacket and Gravity-Based Structures: The clamps offer robust fixation for cable interfaces on jacket and gravity-based offshore platforms.
Export and Inter-Array Cable Termination Systems: The hardware facilitates reliable cable termination for both high-voltage export and inter-array cable systems.
Fixed-Bottom Offshore Wind Developments: The solutions ensure structural integrity for power cables in various fixed-bottom offshore projects.
Cable Stabilisation and Interface Protection: The design provides essential cable stabilisation and sealing protection at the foundation interface, preventing movement and environmental damage.
Customization Services
Philson provides fully customized hang-off system designs. Based on an extensive J-tube engineering database, Philson rapidly adapts technical specifications to suit various pipes, umbilicals, and cables. Furthermore, Philson flexibly tailors the height, material, and structural configuration of the riser hang-off flange to meet specific project requirements. Philson also provides custom-engineered bend restrictors to protect your subsea cables from excessive bending and mechanical stress.
For more information on marine engineering protection products, cable accessories, polyurethane, or PEEK components, please contact the Philson team.
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