Degassing is a critical post-curing process in submarine/land EHV(HVDC) cable manufacturing, focused on the removal of volatile by-products—primarily methane—generated during XLPE insulation crosslinking. Inadequate degassing can result in residual gas diffusion, leading to insulation defects, increased dielectric losses, and potential failure at cable joints during service.
BCT provides fully engineered, turnkey degassing solutions and upgrades for existing installations, including:
Degassing is achieved through controlled heating of the cable over extended periods (from several days up to weeks), enabling the diffusion and evacuation of volatile compounds from the insulation material.
Critical process parameters include:
The process is considered completed when methane concentration at insulation layer drops below defined thresholds and material stabilization is achieved.
Degassing efficiency is directly influenced by airflow management and heat transfer performance. BCT systems are designed to ensure:
This results in reduced degassing cycle times, improved energy efficiency, and consistent product quality.
All systems are designed in accordance with industrial safety standards, incorporating:
With extensive field experience and engineering expertise, BCT delivers robust, high-performance degassing systems tailored to client-specific production requirements. From concept design to full-scale implementation, our solutions ensure reliable operation, process optimization, and long-term production efficiency.
For technical discussions, system design inquiries, or process upgrades, contact our engineering team to explore the optimal solution for your degassing requirements.
Cables Industry United Kingdom (UK) 2025 The project: BCT Group successfully delivered the complete design and construction of five (5) state-of-the-art Drum Degassing Chambers for XLPE cables at the
Cables Industry Korinthos, Greece 2014 & 2018 Project in submarines hyper high-voltage cables The project: Fulgor SA, a member of Stasinopoulos group of companies, started the manufacturing of submarine high