Construction of a LNG storage Tank, in the Norte Grande Chile project
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Técnicas Reunidas
26,000,000 €   
Tractebell (Belgium)
January 2011 - March 2014  
Completed
Mejillones, Antofagasta (Chile)

Description

The project is the second phase of the start-up of the Mejillones LNG terminal, which consists in the construction of a LNG storage tank on land to replace the floating unit. The tank has a capacity of 190,000 m3. and will be of the full containment type, which includes the most advanced technology for earthquake proof constructions, with the construction of 501 seismic insulators on which the bottom slab is supported and finally the Tank, as well as sophisticated monitoring and protection systems.

• Execution of a LNG storage tank, with capacity of 190,000 m3., with the following main characteristics:
- 96.00 m. diameter first concrete slab and edge between 0.70 and 1.20 m., called Secondary Raft
- construction of 501 1.70 m. high and 1.20 m. diameter concrete pedestals for the installation of 501 seismic insulators.
- 96.00 m. diameter second concrete slab and edge between 0.70 and 1.20 m., supported on seismic insulators called Bottom Slab.
- Cryogenic concrete circular wall with an internal diameter of 90.30 m., 0.80 m thick and 48 m. high, horizontally and transversally post-tensioned.
- Concreting of the metallic dome, from level +48 m to level 59 m.
- Levelling work for the tank’s internal surface, using layers of levelling concrete and a final layer of white sand.


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