Diaphragm Closure

During the critical offshore substructure installation phase, jackets are meticulously engineered to either self-upend or be upended with the support of a ballasting system or crane vessel. To ensure the jacket maintains buoyancy and achieves proper upending during the launch sequence, high-performance diaphragm closures are employed to seal the jacket legs and skirt sleeves. This advanced procedure not only ensures the jacket’s stability and floatation but also significantly streamlines the on-site installation, enhancing operational efficiency.

Our Diaphragm Closure (DC) is constructed from premium, highly reinforced rubber, purpose-built to endure extreme hydrostatic pressures during jacket flooding operations. Leveraging the highest quality polymers, these closures are designed for exceptional durability and consistent, reliable performance under the most demanding conditions. The rubber diaphragms are securely affixed to the jacket legs and skirt sleeves using precision-engineered fastening rings or flanges, ensuring a robust seal. These diaphragms can be swiftly and precisely pierced by the pile or an advanced cutting device, facilitating smooth and uninterrupted installation operations.

The DCs are fully customizable, offering tailored solutions to meet the exacting specifications of your project and operating environment. Trelleborg’s state-of-the-art jacket leg can system is engineered to comprehensively address all sealing requirements during the installation of oil and gas or HVDC jacket substructures, providing unparalleled reliability and efficiency. Trust in our Diaphragm Closure solutions to optimize your offshore installations and ensure long-term operational success.