Decommissioning

Longitude has carried out the detailed design and engineering for all types of offshore decommissioning projects, from jackets and topsides through to MOPU and FPSOs including their moorings and risers.

Marine and offshore decommissioning engineering

Longitude combined with our sister company LOC’s long-term marine experience, is highly experienced with all types of vessels, from tugs and barges to DP construction vessels and module carriers.

To execute these installation engineering projects, our specialist engineers provide a range of services, such as:

  • Dynamic lift analysis in air and through the splash zone
  • Motions, mooring and stability analysis
  • Grillage and seafastening design
  • Structural integrity assessment of the platform and decommissioning vessels
  • Structural design for decomissioning
  • Mooring line pull in assessment
  • Floatoff Engineering
  • Risk Assessment
  • Preparation of Operational Procedures and Method Statement
  • Dropped Object and Impact Analysis

Longitude’s experience in decommissioning covers single piece heavy lift decommissioning for entire topsides, development of novel concepts as well as engineering for modular or piece by piece removal.

Key Contacts

Oil & Gas Market Lead, Longitude

London, Longitude

View Profile

Managing Director, Longitude Singapore

Singapore, Longitude

View Profile

Case Studies View All

LS CABLES & SYSTEMS – SOUTH EAST ASIA CABLE INTERCONNECTOR

Longitude were instructed by LS Cables & Systems (LSCS) to support them for the installation analysis and procedures for 2 HVAC power cables systems in South East Asia. Longitude worked…

KINCARDINE, FOWF – GLOBAL SYMPHONY CABLE INSTALLATION STUDY

Longitude was instructed by Global Offshore to carry out a cable installation analysis for the export cable on the Kincardine Floating Offshore Wind Farm off the coast of Aberdeen,…

Prysmian Group – West of Adlergrund Offshore Wind Farm Connection

Prysmian Group was awarded a contract to design, produce and install the power cable systems by 50Hertz Offshore GmbH for the West of Adlergrund offshore wind farm cluster in…