LNG Canada Step 3 – A monumental civil structure for the largest cryogenic tank in North America

⚙️ A high-precision concrete slab
Designed to support the entire tank, the reinforced concrete slab is a key component of the containment system. Its construction required:
• Millimetric planarity to preserve the integrity of the LNG storage
• Phased execution adapted to the site’s complex harsh climatic conditions
• Strict quality control to meet the highest concrete standards

⚙️ A structural concrete wall with a critical dual function
Surrounding the slab, a 46-meter-high post-tensioned reinforced concrete wall (entirely in-house engineered) was progressively built. This massive structure ensures:
✅ Structural support for the dome during and after installation
✅ The containment barrier system imposed by codes and regulations
✅ Resistance to external hazard such as fire or blast,
✅ The post-tensioning works were carried out by Freyssinet, also part of VINCI Construction, whose advanced structural anchoring systems contributed to ensuring the long-term performance and durability of the infrastructure.

⚙️ A reinforced concrete roof (after erection of the steel cupola) to ensure :
✅ support for the top platform and tank accessories
✅ resistance to external hazard such as fire or blast,
Together, the slab, wall and roof form the safety monolithic envelope of a “full containment” tank, built in accordance with the world’s most stringent LNG storage standards.
🗓️ Seamless execution, mastered timelines
This pivotal phase mobilised multiple teams across quality, construction, and scheduling. It was delivered:
• On top of foundations built to millimetric tolerances
• With effective collaboration between trades, ensuring seamless coordination and execution
• Just ahead of the successful dome air-lifting operation

This civil engineering achievement demonstrates Entrepose Contracting’s ability to deliver technically demanding infrastructure that meets the highest standards in safety, sustainability, and performance.
📢 Next up: the spectacular air raising of a 1,540-tonne steel dome, spanning 92 meters. Stay tuned to discover how precision engineering meets innovation in the next stage of the LNG Canada journey

#LNGCanada #CryogenicTank #CivilEngineering #ConcreteSlab #ContainmentWall #EPC #EntreposeContracting #VINCIConstructionGrandsProjets #Kitimat #Foundations #EnergyTransition #EngineeringExcellence
LNG Canada Uzo Ojimadu, MBA, Jordan Keim Eric Priore @freyssinet