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LID LIFTER

Compressed air has been used instead of cranes to place the roof on a giant liquefied natural gas tank in India. Kvaerner Construction could not bring large enough cranes to the remote Dabhol region on the west coast to make the 770t lift so it opted to blow the 80m diameter inverted steel basin to its 40m high final position using two large fans. Each fan produced 25.5m 3/sec of air during the sevenhour operation. The 14m deep roof is made up of 600 sections, assembled inside the tank ...

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