EP0614432A1 - Dispositif servant a transferer des membres d'equipage ou des cargaisons entre une plateforme flottante ou fixe et un bateau en haute mer. - Google Patents

Dispositif servant a transferer des membres d'equipage ou des cargaisons entre une plateforme flottante ou fixe et un bateau en haute mer.

Info

Publication number
EP0614432A1
EP0614432A1 EP92924055A EP92924055A EP0614432A1 EP 0614432 A1 EP0614432 A1 EP 0614432A1 EP 92924055 A EP92924055 A EP 92924055A EP 92924055 A EP92924055 A EP 92924055A EP 0614432 A1 EP0614432 A1 EP 0614432A1
Authority
EP
European Patent Office
Prior art keywords
boom
rope
boat
deck
winch
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP92924055A
Other languages
German (de)
English (en)
Other versions
EP0614432B1 (fr
Inventor
Sigurd Ree
Eldar Lien
Kaere Aardal
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Selantic Industrier AS
Original Assignee
Selantic Industrier AS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Selantic Industrier AS filed Critical Selantic Industrier AS
Publication of EP0614432A1 publication Critical patent/EP0614432A1/fr
Application granted granted Critical
Publication of EP0614432B1 publication Critical patent/EP0614432B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B27/00—Arrangement of ship-based loading or unloading equipment for cargo or passengers
    • B63B27/30—Arrangement of ship-based loading or unloading equipment for transfer at sea between ships or between ships and off-shore structures
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B27/00—Arrangement of ship-based loading or unloading equipment for cargo or passengers
    • B63B27/14—Arrangement of ship-based loading or unloading equipment for cargo or passengers of ramps, gangways or outboard ladders ; Pilot lifts
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D15/00—Movable or portable bridges; Floating bridges
    • E01D15/24—Bridges or similar structures, based on land or on a fixed structure and designed to give access to ships or other floating structures
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B17/00—Vessels parts, details, or accessories, not otherwise provided for
    • B63B2017/0072—Seaway compensators

Definitions

  • the invention concerns a device for transfer of personnel or cargo between a fixed or floating installation and a boat in a high sea.
  • the installation may, e.g., be an oil platform, a quay or a loading ramp on shore.
  • the boat may be a rescue vessel, a cargo boat, a passenger ship, a fishing boat or the like.
  • the primary application of the device can be as a means of evacuation between the installation and the boat.
  • the device can principally be intended to function as a routine means of transport for personnel or cargo, to and from an installation where wave motion or other factors often make traditional connections by crane, gangway or the like difficult, time consuming or hazardous.
  • One of the most important of the applications of the invention will be the transfer of personnel and/or lighter goods between oil platforms and so-called standby vessels or supply vessels. These vessels are very easy to manoeuvre and capable of coming relatively close alongside the platform and maintaining relatively precisely the same position for extended periods even in a high sea. However, even these vessels will suffer motion amplitudes both horizontally and vertically which greatly complicate cargo and personnel transfer between the vessels and the platforms. For heavier goods this problem is generally solved by packing the goods securely in extremely solid steel containers which can withstand heavy blows against the boat deck or against other cargo.
  • a particularly complicated but also important problem is to evacuate people safely from a platform to a standby vessel or other seaworthy rescue vessel in an emergency situation. At present this usually has to be done indirectly by first taking the evacuating personnel down into lifeboats or rafts in the water, or they jump directly into the water in special survival suits, are picked up by so-called "mob-boats" or other vessels and are finally transferred to a safer, preferably specially- equipped rescue vessel. In most such evacuation systems the risk is very great, especially in a high sea. Various attempts have therefore been made to find systems which can safely take evacuating personnel directly from the platform to the rescue vessel, so-called "dry evacuation systems".
  • the object of the invention is to solve both this evacuation problem as well as other more everyday problems when trans ⁇ ferring small and vulnerable cargoes between platform and boat.
  • the system can also successfully be used between two boats, or from shore to boat where quay or jetty conditions are difficult.
  • the invention is characterized in that a boom equipped with a longitudinal transport passage is pivoted around a horizontal axis on the installation.
  • One outer end of the boom projects from the platform to a position over the boat deck from where the cargo or person has to be lifted or lowered on to.
  • a guide wire is stretched between the outer end of the boom and the boat deck .
  • the boom is upwardly suspended so that it follows the movements of the vessel's deck con ⁇ trolled by the guide wire, which maintains a constant distance to the boat deck.
  • a cargo can be controlled horizontally by slidable securing rings through which the guide wire runs, while the vertical movement can be synchronized with the movements of the boom and the deck.
  • the cargo can be gently lowered on to the boat deck irrespective of the deck's heaving motion in the waves.
  • the heaving motion will be absorbed gently and gradually by the cargo as the latter is pushed out on the boom, and will correspondingly be gradually dampened when the cargo is pushed from the outer end of the boom inward towards the boom's horizontal turning axis.
  • the cargo or the person to be transferred exposed to any jarring impacts At no time are the cargo or the person to be transferred exposed to any jarring impacts.
  • Fig. 1 illustrates an oil platform equipped with 3 devices according to the invention, and where the vessel is connected to 2 of the devices, thus illustrating the system in an operative condition.
  • Fig.2a-c illustrate embodiments of the boom, where 2a depicts an open framework construction with an inserted longitudinal gangway or a conveyer belt, while 2b and c illustrate a longitudinal view and a cross section respectively of a partially open framework boom with a partially externally located closed gangway.
  • Fig. 3a-b illustrate the boom in substantially different positions, where 3a illustrates an upwardly directed rest position where the boom's specific weight is balanced against the upwardly directed spring force, while 3b illustrates upper and lower outer positions for the boom's pendulum movement synchronously with the movements of a connected boat deck in the waves. In both these positions in fig. 3b the boom is held down by a tension in the guide wire near the outer end of the boom.
  • 4a-c show examples of suspension systems for the boom, where 4a illustrates a passive hydropneumatic suspension in which the characteristics can be adjusted manually by gas valves and a hydraulic pump.
  • 4b illustrates an active hydropneumatic suspension system controlled by computer-processed signals from a tension sensor on the guide wire.
  • 4c illustrates a suspension system in the form of a heave compensating constant tension winch.
  • Fig. 5 shows a connection between boat and boom being set up, in which the connecting ropes are winched down on to the boat deck.
  • Fig. 6 shows the invention in use for transport of personnel down to the boat.
  • Fig. 7 shows an embodiment of the transport means between boom and boat deck whereby personnel or cargo can be transferred via 2 evacuation stockings and a lift.
  • Fig. 8 shows an embodiment which is primarily intended for two-way transfer of cargo.
  • the actual transport means is composed of a gangway on the boom, together with an arrangement with two evacuation chutes or socks and a lift between the end of the boom and the boat deck.
  • the boat's (vessel's) movements in the waves are gradually transferred to the evacuating personnel in that initially only one degree of freedom of the motion (the vertical heave motion) is absorbed while the evacuee moves out towards the outer end of the boom. Thereafter horizontal movements are also gradually transferred as the evacuee slides down through the evacuation sock or goes with the lift. Finally the rolling and pitching motions are also absorbed when the evacuee lands on a soft padding (inflated rubber dinghy) in the middle of the vessel's deck.
  • a soft padding inflated rubber dinghy
  • the boom is in a state of readiness in its upper position.
  • the boom has hydropneumatic suspension. It is normally in a state of full readiness in an upper rest position.
  • a manually controlled hydraulic pump is used for refilling in the case of leakage, which will be immediately detected since the boom drops slightly.
  • the pump can also be used for manual lifting and lowering of the boom, but this is not a part of the standard procedure) .
  • the vessel takes up a position under the boom.
  • the vessel will take up a position with its bow into the weather and reverse the afterdeck in under the boom. From the bridge the captain will have a complete all-round view of the afterdeck, the boom and the platform. The captain has the choice of using either dynamic positioning (DP) or manual positioning.
  • DP dynamic positioning
  • the rope ends are light, strong rope, e.g. Kevlar, with padded sandbags shackled on at the end. They can be released from the platform deck before anyone has gone out on the boom.
  • One of the rope ends has a tensile strength of at least 10 tons.
  • the other has a calibrated breaking strength of approximately 8 tons, and is intended for use en random rescue vessels which do not ' .ave their ⁇ -*- ⁇ n ⁇ oaring winch. If the rope ends do nc land n t ieck, they can be picked up with a boathook when trie vet- ⁇ el manoeuvres alongside.
  • the vessel threads the rope end around a pulley on the deck on to which the sock is to be lowered, and - hes the rope end down with a winch with a mooring fu.. -ion of approximately 8 tons.
  • the rope end is attached to the lowest reinforcing ring in -che sock, which is reinforced for the purpose. When the rope end is pulled down, an approximately 500 kg heavy perforated weight is pulled down simultaneously. See figs. 5 and 6.
  • the weight is suspended in two pulleys mounted a con ⁇ siderable dista : above the weight's centre of gravity.
  • the weight is f er controlled in that the rope end is threaded through a long sleeve on the weight.
  • On the pulleys runs a guide wire, one end of which is fixed to the boom, and the other end reeled up on a winch with a 0.5 ton slipping clutch mounted on the boom.
  • the guide wires are threaded in the normal manner through all the reinforcing rings on the sock.
  • the lowest cell in the sock is permanently attached to a special raft, which provides a nonimpact reception area on deck, which can hold a few people, and which is capable of carrying these people safely if the vessel is suddenly disconnected.
  • the raft is automatically inflated when the rope end is st' ⁇ che ⁇ , At the same time the guide wire winch is sta d. (Both parts have manual backup) .
  • the vessel has winched down the weight and the raft (which also acts as padding for the weight) so far that the sock is completely extended, the boom will be pulled behind it.
  • the boom When the weight reaches the vessel's deck, the boom will swing around with the wave motion in an approximately horizontal position (somewhat depending on ebb/flow) .
  • the weight has sprung support legs with friction elements which prevent it from rotating around the rope end when it has been pulled right down to the deck. Otherwise the rope end is the only securing element between the sock and the vessel.
  • the length of the rope end is adapted so that it lets go of the winch if the vessel has to leave, before the tensile strength in the winch attains too great a horizontal component in relation to the dimensioning of the boom.
  • the crew on deck stretches a guide rope as "support rail” between the ra t and the hospital or other doors in the vessel's superstructure.
  • the guide ropes are attached to the raft at attachment points which withstand the tension that is necessary for the purpose and no more.
  • the lift consists principally of a vertical steel frame slightly higher than the height of a man, which is controlled between internal reinforcing rings slightly smaller in diameter than external reinforcing rings to which they are welded.
  • the tension release wires carry the outer rings, while the internal rings act as fenders for the lift;
  • the mooring winch releases rope end in a controlled manner and without losing the connection.
  • the raft lifts a few metres off the deck if the boom reaches its lower end position.
  • the guide ropes between the superstructure and the raft are then pulled in a disciplined manner into the attachment point on the raft.
  • the vessel can return at any time, winch the raft down on to the deck and continue the evacuation without having to be connected again. In the meantime the evacuees in the raft and sock sat waiting safely.
  • the boom can be lowered and evacuation to the rafts can be continued.
  • the lift which in the embodiment is primarily included for evacuation of the injured, can of course be adapted for an application as a primary transport means for goods or personnel, without this falling outside the scope of the invention.
  • the previously described evacuation socks for example, can be omitted entirely in order to make room for a lift with correspondingly greater dimensions.
  • the gangway on the boom can then be replaced with or complemented by a conveyer belt. The need for such transport means for routine use in the North Sea is obvious, when the present day expensive helicopter transport costs are taken into con ⁇ sideration.
  • FIG. 3A RES /READINESS POSITION
  • the boom is suspended on the gas springs.
  • the top of the boom is far enough out to enable the rope end in free fall to be picked up on the deck of the vessel.
  • the boom is not in the wa of supply traffic. Moderate pressure in the gas springs.
  • Fig. 3B OPERATIVE POSITION

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Emergency Lowering Means (AREA)
  • Ship Loading And Unloading (AREA)
  • Bridges Or Land Bridges (AREA)
  • Jib Cranes (AREA)

Abstract

Un dispositif, servant à transférer des membres d'équipage ou une cargaison entre une plateforme flottante ou fixe et un bateau en haute mer, comprend une flèche pivotant autour d'un axe horizontal sur la plateforme, et qui fait saillie sur une zone dans laquelle un pont de bateau peut être manoeuvré. La flèche est suspendue par le haut, et est équipée d'une voie de transport longitudinale. A partir de l'extrémité distale de la flèche, un élément de raccordement à corde ou à câble peut être abaissé et raccordé au pont d'un bateau de telle façon que, lorsque l'élément de raccordement est prêt à être utilisé, la corde ou le câble est tendu fermement entre le pont du bateau et l'extrémité suspendue de la flèche. La corde demeure tendue et d'une longueur approximativement constante, étant donné que la suspension de la flèche permet à celle-ci de suivre les mouvements du bateau dans les vagues. La corde permet de commander les dispositifs de transport entre l'extrémité de la flèche et le pont du bateau, sous forme d'un couloir d'évacuation, d'une glissière ou d'un monte-charge.
EP92924055A 1991-11-26 1992-11-26 Dispositif servant a transferer des membres d'equipage ou des cargaisons entre une plateforme flottante ou fixe et un bateau en haute mer Expired - Lifetime EP0614432B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
NO914628 1991-11-26
NO914628A NO300997B1 (no) 1991-11-26 1991-11-26 Anordning for overföring av personer eller last mellom en fast eller flytende installasjon og en båt i höy sjö
PCT/NO1992/000187 WO1993011036A1 (fr) 1991-11-26 1992-11-26 Dispositif servant a transferer des membres d'equipage ou des cargaisons entre une plateforme flottante ou fixe et un bateau en haute mer

Publications (2)

Publication Number Publication Date
EP0614432A1 true EP0614432A1 (fr) 1994-09-14
EP0614432B1 EP0614432B1 (fr) 1996-04-24

Family

ID=19894629

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92924055A Expired - Lifetime EP0614432B1 (fr) 1991-11-26 1992-11-26 Dispositif servant a transferer des membres d'equipage ou des cargaisons entre une plateforme flottante ou fixe et un bateau en haute mer

Country Status (4)

Country Link
EP (1) EP0614432B1 (fr)
AU (1) AU2958192A (fr)
NO (1) NO300997B1 (fr)
WO (1) WO1993011036A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AR077927A1 (es) * 2009-08-14 2011-10-05 Andresen Johan F Un dispositivo de transporte y un metodo para operar el dispositivo
DE102010004077A1 (de) 2010-01-06 2011-07-07 NavConsult AWSS GmbH & Co. KG, 25541 Vorrichtung und Verfahren zur Erleichterung des Zugangs zu einer Offshore-Anlage
NL2014631B1 (en) 2014-12-05 2016-12-20 H Schinkel Holding B V A motion compensation device.
WO2016089207A1 (fr) 2014-12-05 2016-06-09 H. Schinkel Holding B.V. Dispositif de compensation de mouvement

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2876919A (en) * 1957-02-13 1959-03-10 Jersey Prod Res Co Marine transfer assembly
US2874855A (en) * 1957-07-02 1959-02-24 Texas Co Personnel or object transfer apparatus and method
SE394186B (sv) * 1968-06-24 1977-06-13 Murmanskoe Vysshee Morekhodnoe Anordning vid lastkran
US4310277A (en) * 1980-03-10 1982-01-12 Robinson James S Apparatus for transferring cargo between relatively movable bodies
US4395178A (en) * 1980-12-08 1983-07-26 The Boeing Company Transfer system for use between platforms having relative motion between one another
FI72103C (fi) * 1985-05-08 1987-04-13 Rauma Repola Oy Foerfarande foer oeverfoering av last.

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9311036A1 *

Also Published As

Publication number Publication date
NO914628D0 (no) 1991-11-26
NO300997B1 (no) 1997-09-01
WO1993011036A1 (fr) 1993-06-10
AU2958192A (en) 1993-06-28
NO914628L (no) 1993-05-27
EP0614432B1 (fr) 1996-04-24

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