The Terminal consists of a pre-stressed-concrete caisson (GBS) measuring 180 m long, 88 m wide and 47 m high and weighing over 280,000 tonnes, housing two natural gas storage tanks, each with a capacity of 125,000 m3.
The entire concrete structure is heavily reinforced through reinforced and pre-stressed steel. Within the works of the caisson, the electro-mechanical installation tasks required by the LNG Terminal were included.
The works of the GBS caisson were based on a foundation slab, which slides 12,50 m high on the walls in cells over an area of 15,840 m2. Above the cells, a slab support for the tank was built to slide once again the 33 m upper closing walls, and close it up with the upper slab known as the "top side", where the gas processing plant was installed.
It is the first offshore gas terminal installed in the world and has the European record for a sliding surface at 196,000 m2
ACCIONA Infrastructures won, for this work, the award for Safety and Occupational Hazard Prevention by AkerSolutions, the client for which the works where performed.
GBS has two basic functions once it is positioned and offshore ballasting: