During the offshore substructure installation phase, jackets are meticulously engineered to either self-upend or be assisted by a ballasting system or crane vessel. To ensure that the jacket maintains buoyancy and achieves the proper upending during the launch sequence, diaphragm closures are utilized to seal the jacket legs and skirt sleeves. This advanced technique not only enables efficient floating but also facilitates seamless maneuvering during on-site installation.
Our Diaphragm Closure (DC) system, crafted from highly reinforced rubber, is designed to withstand the demanding hydrostatic pressures experienced during jacket flooding. Constructed with top-grade polymers, these closures provide dependable performance and durability. They are attached to the jacket legs and skirt sleeves using robust fastening rings and flanges, allowing for quick and straightforward piercing by piles or cutting devices to streamline installation.
The DC system can be tailored to specific project requirements and operating conditions, making it an ideal solution for a variety of offshore applications. Trelleborg's DC system
Benefits
Applications
- Offshore platform jacket substructure
- Skirt sleeves
- LNG terminal construction
