E - Fixed Constructions – 02 – B
Patent
E - Fixed Constructions
02
B
61/8
E02B 17/00 (2006.01) E02B 17/02 (2006.01)
Patent
CA 1244662
Abstract Steel structure for support of deck with production facilities for oil and gas at larger water depths and proce- dure for assembly of the structure while it is floating in the sea. The structure consists of a vertical erected triangular trusswork tower 1 supported of a base 2 and reaching up to a level above the water surface where it supports a deck 3. The tower consists of three corner columns 6 interconnected by horizontal and diagonal trusswork stays. The tower is supported by three inclined supporting legs 4 which terminate in a base foundation. The supporting legs 4 are symmetrically arranged around the tower in such a way that each of them are facing a side plane of the triangular tower. The supporting legs are a trusswork construction of triangular cross-section. By installation of the structure the tower 1 is brought to be floating vertically in the sea, while the supporting legs 4 are floating in approximately horizontal position with the installation frames 5 mounted. The upper part of the supporting legs is connected to a temporary joint 20 of the tower and the legs are rotated down into final position in that the installation frames by means of a wire system 14 are pulled into a connection point for the frame on the tower.
494485
Sveen Dagfinn
Fetherstonhaugh & Co.
Norsk Hydro A.s
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