E - Fixed Constructions – 02 – B
Patent
E - Fixed Constructions
02
B
61/8
E02B 17/00 (2006.01) E02B 17/08 (2006.01)
Patent
CA 1249133
"PROCESS FOR THE INSTALLATION OF THE ENBLOC SUPERSTRUC- TURE OF AN OFFSHORE PLATFORM, AND EQUIPMENT FOR CARRYING IT PRACTICALLY" Abstract of the Disclosure Process for the installation of the enbloc superstruc ture of an offshore platform on the fixed legs emerging from water of the lower structure or jacket, of said plat- form, wherein the whole superstructure is loaded on a sup port platform vertically movable, provided on the deck of a semisubmersible raft or barge which, in the nearby of said jacket, is completely submerged, the stability being maintained by vertical buoyancy tanks, they too being in- stalled on raft deck, while the said support platform with the said superstructure above it is lifted, by acting on related hydraulic lift cylinders, at an height higher than that of the jacket leg protruding ends, independently from wave-motion of sea; subsequently cylindrical lift pil lars are made slide, by means of hydropneumatic jacks, in- side the respective tubular columns provided in the super- structure until their conical ends enter the correspond- ing seats in the jacket legs below and, during a moment of smooth sea, by continuing acting on said hydropneumatic jacks, the superstructure is lifted up to the desired height while, at the same time, the said support mobile 2. platform is rapidly lowered down, and the raft is ballast- ed.
501975
Robic Robic & Associes/associates
Saipem S.p.a.
LandOfFree
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