Customer :
National Grid Grain LNG Limited
Role :
EPC Contractor
Key date :
January 2021 to March 2026
Location :
Isle of Grain, Rochester, Kent - United Kingdom
Description of the Project
Contract model: Full EPC (Engineering, Procurement & Construction) with assistance to commissioning; lump‐sum with provisional sums.
Contractor / JV: EVT Grain – a joint venture of Entrepose Contracting, VINCI Construction Grands Projets, and Taylor Woodrow
Scope headline: Construction of a full containment LNG storage tank of 190,000 m³ net capacity, including associated equipment and integrations into existing terminal systems.
The tank is part of Grain LNG Phase 4 / Capacity 25 (CAP25), adding storage and process capacity while maintaining operation.
Work done and added value of our solution
- Type: Full Containment LNG Storage Tank
- Capacity: 190,000 m³
- Inner Tank: 9% Nickel Steel
- Outer Shell: Pre-stressed Concrete
- Insulation: Perlite (annular space), Fiberglass (roof)
Added Values
- Increased National Energy Security
The new 190,000 m³ full containment LNG tank significantly expands storage capacity at the Isle of Grain terminal, enabling Grain LNG to supply up to 25% of UK gas demand during peak periods. This strengthens resilience against supply disruptions and supports long-term energy security. - Operational Flexibility & Market Competitiveness
By adding extra capacity, National Grid can renew long-term contracts and offer additional capacity to shippers, improving flexibility for global LNG traders and enhancing the UK’s position as a strategic gas hub. - Advanced Engineering & Safety Compliance
The solution integrates state-of-the-art cryogenic technology (9% Ni steel inner tank, pre-stressed concrete outer shell) and complies with COMAH Upper Tier regulations, ensuring safe operations in a high-risk industrial environment. - Efficiency Through Design Freeze & Constructability Reviews
The project applied “design chill” and “design freeze” principles to minimize late-stage changes, reduce cost overruns, and maintain alignment with client requirements—adding value through predictable delivery and quality assurance. - Integration with Existing Infrastructure
The tank is fully integrated with jetty transfer pipelines, boil-off gas compression systems, and terminal utilities, optimizing throughput and reducing operational bottlenecks. - Sustainability & Lifecycle Benefits
Enhanced insulation systems (perlite, fiberglass) and slab heating reduce energy losses, while robust structural design ensures long service life, minimizing future maintenance costs.
