Shell Prelude FLNG - HLV Seafastening

Shell Prelude FLNG -  HLV Seafastening

Project Overview

The Shell Prelude FLNG project required a well-engineered seafastening design to transport seawater risers from Korea to their final location in Australia. The solution had to utilize lightweight materials with high compressive strength to ensure ease of handling, especially in space-constrained areas.

Challenges Faced

Several challenges arose during the project:

• Material Strength & Weight: Given the weight of the risers, the expanded polystyrene (EPS) needed a minimum density of 55 kg/m³ to achieve a compressive strength of at least 190 kPa. At the time (2016), Filcor 55 EPS was the strongest available in the market.
• Complex Logistics: The EPS foam blocks had to be transported through multiple countries before reaching the final destination in Busan, South Korea.
• Custom Seafastening Components: The project required customized ratchet straps with the following specifications:
• • 75mm x 15m, MBL 20 Metric Ton
  • 75mm x 6m, MBL 10 Metric Ton

Solution Delivered

To streamline logistics and optimize assembly, we:

• Designated Pasir Gudang Port (Malaysia) as a duty-free assembly zone before final delivery to South Korea.
• Sourced components globally:
• • EPS foam blocks from the UK
  • Ratchet straps from the Netherlands
  • Wooden saddles from Malaysia
• Successfully transported and assembled the system, ensuring compliance with weight, strength, and space constraints.

This solution enabled a secure and efficient transport process, meeting all project requirements while overcoming logistical and material challenges.