Method and system for connecting a loading buoy to a...

B - Operations – Transporting – 63 – B

Patent

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Details

B63B 27/34 (2006.01) B63B 22/02 (2006.01) B63B 22/26 (2006.01) B63B 27/24 (2006.01)

Patent

CA 2124438

A method and a system for connecting a submersed loading/unloading buoy (2) to a submerged receiving space (3) in a floating vessel (1), for transfer of a medium, especially oil, to or from the vessel, wherein the buoy (2) is anchored to the sea bed (4) and is connected to a transfer line (6) for medium. According to one variant of the method, a sink line (16) is lowered from the ressel (1) through the receiving space (3), an auxiliairy buoy (18) being attached to the sink sine end, possibly via an additional ins (19), and the auxiliary buoy (18) being caused to come to the water surface. A suitably marked pick-up line (12), which is connected to the buoy (2), is taken up and connected to the sink line, whereafter the vessel (1) by a positioning means is moved into position above the submerged buoy (2) and said lines (16, 12) are pulled up through the receiving space (3), so that the buoy (2) is hoisted up and moved to a locking position therein. whereafter the buoy is locked in place in the receiving space. The vessel is provided with a hoisting means (11) to hoist up said lines and the buoy (2), and also with a service shaft (9) connecting the receiving space (3) to the deck (8) of the vessel.

Procedé et dispositif servant à relier une bouée de chargement/déchargement submergée (20) avec un espace de réception submergé (3) d'un navire flottant (1), de façon à réaliser le transport d'un milieu liquide, particulièrement du pétrole, vers et depuis ledit navire. La bouée (2) est ancrée au fond de la mer (4) et est reliée à une conduite de transfert (6) du milieu liquide. D'après un mode de réalisation alternatif de l'invention, on fait descendre un câble de fond (16) depuis le navire (1) à travers l'espace de réception (3), une bouée auxiliaire (18) étant fixée à l'extrémité du câble de fond, éventuellement par l'intermédiaire d'un câble supplémentaire (19) et on provoque la remontée de ladite bouée auxiliaire (18) à la surface de l'eau. Un câble de ramassage (12) pourvu de repères appropriés et relié à la bouée (2) est rattaché au câble de fond; on positionne ensuite le navire (1) au-dessus de la bouée submergée (2) par l'intermédiaire d'un moyen de positionnement et on remonte lesdits câbles (16, 12) à travers l'espace de réception (3), de manière à relever la bouée (2) et à la placer en position de blocage dans ledit espace. Le navire comporte un moyen de levage (11) servant à relever lesdits câbles et la bouée (2), ainsi qu'un arbre de service (9) reliant l'espace de réception (3) au pont (8) dudit navire.

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