Structural Welding for New Offshore Mooring System

Structural Welding for New Offshore Mooring System

• Client: Neptune Oil & Marine Services

• Location: West Africa Offshore Mooring Field

• Duration: 3 weeks (September 2024)

• Scope of Work:
  Fabricate and install a permanent mooring system including subsea anchor piles and cross bracing for a floating production storage and offloading (FPSO) unit.

• Execution:

  • Divers conducted seabed prep using high-pressure jetting tools.

  • Welded 8 anchor piles (each 12m in length) to cross-brace frames using hyperbaric welding techniques.

  • Conducted real-time remote NDT via ROV to ensure weld precision.

  • Used AWS D3.6M-certified procedures to meet international standards.

• Outcome:
  Mooring system passed Bureau Veritas inspection and was fully operational within timeline. Client reported increased vessel stability and load capacity.