'SeAlign' - Self Aligning Connection System


sealign
SeAlign is developed together with Statoil and Innovasjon Norge. The system allows two hubs to be connected at an angle up to +/- 3 deg, hence eliminating any need for applying alignment moment during connection. This represent a major advantage compared to traditional pull-in and connection systems, where the alignment moments typically represent the major loads. SeAlign reduces stresses in the Pipeline, Spools and Manifold/PLEM piping drastically.
The system comprises a compliant metal-to-metal seal. The compression force is achieved by a typical clamp connector, and the system is therefore also adaptable with existing connection systems.
The extreme alignment properties and easiness to install makes SeAlign also a possible choice for pipeline repairs.


ADVANTAGES






  • Compensates for Misaligned Pipes

  • Drastic Reduction in Stresses in Piping

  • Reduced dimensions of spool, terminations etc.

  • Eliminate alignment structures on inboard and outboard sid

  • No need for high capacity connection tools

  • Smaller connection tools flown by ROV

  • Simplified testing arrangement as mainly axial forces are introduced

  • Reduced HISC issues in Duplex steels as per DNV-RP-F112