The scope of work consisted of civil works for 3 LNG cryogenic concrete tanks each of 140,000 m³ capacity, 76.3 m diameter and height of 51 m. Each tank was founded on 1,200 mm bored in-situ piles. Construction comprised 0.8 m thick slab with concrete walls poured with climbing shutters.
For the post tensioned walls and base slab, 60 N strength microsilica concrete was batched on site. Each roof was built with an air raised steel cupola and a concrete cover. An in-situ concrete cantilevered structure 27 x 22 m was built on each roof to receive mechanical installations.
The scope also included general earthworks, concrete spill channels, basins and roadworks. Work was executed to very stringent QA/QC and safety controls.
MIDMAC had total responsibility for civil works inclusive of engineering design.
Piling: 1,216 No.
Excavation: 3,500 m³
Reinforced Concrete: 47,000 m³