Ice breaker, method and system for single-support mooring...

B - Operations – Transporting – 63 – B

Patent

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Details

B63B 35/08 (2006.01) B63B 21/50 (2006.01) B63B 22/02 (2006.01) B63B 27/24 (2006.01)

Patent

CA 2513180

The invention discloses the following transformations: In order to carry out the offshore discharge of a liquid load, mainly oil from a land storage plant to ocean-going tankers during winter time and ice formation by mooring the tankers to a mooring berth or by a single-support mooring at any time irrespective of a prevailing wind and the state of sea in a more comfortable direction for said mooring berth and in such a way that the tankers can perform a full circle and be loaded with a liquid medium, an ordinary icebreaker (1) comprises a diving station (5) which is arranged on the deck (3) thereof and provided with a diving well (6) in the hull (2) of said icebreaker (1), and a device for protecting the flexible hose (8) of an undersea pipeline against ice. In the first variant, said protecting device is embodied in the form of a cylinder (7) provided with guides (13) which make it movable inside a guiding well (10) embodied in the aft end of the hull (2). In the second variant, the icebreaker (1) comprises a device for protecting the flexible hose (8) of the undersea pipeline against ice embodied in the form of a pontoon (15) which is provided with a service well (16) for said flexible hose (8), said device being arranged on the deck (4) and secured for the sea. The inventive system for single-support mooring and servicing ships comprises the inventive icebreaker (1) for the offshore discharge of oil. A mooring rope and a hose for transporting a fluid medium are embodied in the form of an integral hose-rope (28). The inventive method for single-support mooring and servicing ships, mainly tankers (9) is carried out with the aid of the inventive icebreaker (1) and the hose-rope (28).

L'invention vise à assurer la possibilité de déchargement au large, en hiver et dans les glaces, de milieux liquides, de préférence du pétrole, depuis un terminal de réservoirs côtiers vers des pétroliers marins. Pour obtenir ce résultat, on assure la possibilité d'amarrage en tout temps des pétroliers à l'appontement flottant ou à un support unique, indépendamment du vent dominant ou de l'état de la mer, dans la direction qui convient le mieux au pétrolier, avec une possibilité de rotation à 360·, l'amarrage étant suivi de l'entretien des pétroliers qui consiste à acheminer des milieux liquides vers lesdits pétroliers. En outre, les modifications suivantes sont apportées: - un brise-glace existant (1) est muni d'un poste de scaphandrier (5) installé sur le pont (3) et comportant un puits de scaphandrier (6) fait dans la coque (2) du brise-glace (1), ainsi que d'un dispositif de protection du tuyau souple (8) du pipeline marin contre l'action adverse des glaces, qui se présente dans un premier mode de réalisation comme un cylindre (7) muni de guides (13) destinés au déplacement à l'intérieur d'un puits de guidage (10) fait dans une partie poupe (2) de la coque. Dans un deuxième mode de réalisation, le brise-glace (1) est muni d'un dispositif de protection du tuyau souple (8) du pipeline marin contre l'action adverse des glaces, qui se présente comme un ponton (15) muni d'un puits (16) de maintenance du tuyau souple (8) et monté sur le pont en position de route; - on a utilisé un système d'amarrage et d'entretien de navires à support unique, muni d'un brise-glace (1) proposé dans l'invention qui permet d'assurer le déchargement du pétrole au large, les amarres et le tuyau de transport de milieu liquide se présentant comme un tuyau d'amarrage unique (28), le procédé d'amarrage et d'entretien des à support unique navires, de préférence de pétroliers (9), utilisant le brise-glace de l'invention et le tuyau d'amarrage (28).

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