Longitude were contracted by SAJ Tech to provide detailed engineering associated with conversion of Halcyon 2 MODU to a Water Injection Facility.

Facts and Figures:

  • 3500tons topside’s elevated weight
  • 40m Water depth
  • Mat supported unit
  • BV Class

Longitude’s Scope of Work
The engineering scope included naval architecture, structural engineering and marine engineering for the modifications for the Halcyon 2 platform.
The in-place analysis of the unit included a global model assessment using SACS software, for leg strength analysis and global Hull, Topside and Mat assessment using FEMAP software. Seismic and geotechnical foundation stability analysis were also performed to complete the on-site assessment.

Local analyses were conducted to verify the leg to mat local strength and fatigue behavior, the pinhole fatigue, the re-assessments of the helideck and crane pedestal, the impact from a boat, the addition of a new linking bridge and of new equipment foundations (AHU, ACCU, DG, skids…), using either SACS or FEMAP.

Longitude also provided fabrication yard engineering support for the Marine package design.

Longitude also liaised with class to reply and resolve comments, in order to ensure technical requirements of the scope are met and facilitate submission of technical deliverables.