EP0614432B1 - 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 Download PDFInfo
- Publication number
- EP0614432B1 EP0614432B1 EP92924055A EP92924055A EP0614432B1 EP 0614432 B1 EP0614432 B1 EP 0614432B1 EP 92924055 A EP92924055 A EP 92924055A EP 92924055 A EP92924055 A EP 92924055A EP 0614432 B1 EP0614432 B1 EP 0614432B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- boom
- rope
- boat
- winch
- deck
- 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.)
- Expired - Lifetime
Links
- 238000009434 installation Methods 0.000 title claims abstract description 12
- 238000012546 transfer Methods 0.000 title claims abstract description 12
- 238000007667 floating Methods 0.000 title claims abstract description 7
- 230000033001 locomotion Effects 0.000 claims abstract description 27
- 239000007788 liquid Substances 0.000 claims 1
- 239000000725 suspension Substances 0.000 abstract description 8
- 230000032258 transport Effects 0.000 description 10
- 238000011068 loading method Methods 0.000 description 4
- 230000003014 reinforcing effect Effects 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 229920000271 Kevlar® Polymers 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 231100001261 hazardous Toxicity 0.000 description 1
- 239000004761 kevlar Substances 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000009046 primary transport Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000010561 standard procedure Methods 0.000 description 1
- 230000004083 survival effect Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Images
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. Nevertheless, there will naturally be limits to the how rough the sea can be during which it is practically possible to perform such loading operations with present day equipment.
- active or passive heave compensation systems For transfer of cargo between two floating installations or where loading operations have to be performed with a crane which itself is vulnerable to wave motion, there exist so-called active or passive heave compensation systems. These help to limit the cargo's wave accelerations either by suspending the cargo by a spring system, e.g. pneumatically, or by registering the cargo's acceleration or position by a sensor and processing it in a computer which transmits output control signals to the crane in order to compensate for the inadvertent movements caused by the waves. These systems can stabilise the cargo's movements during the cargo transfer, but they still do not remove the horizontal and vertical shock loadings which can occur when the cargo is lowered on to a boat deck which itself is in motion.
- the usual means of transport for a small number of people or light-weight goods between boat and platform is a so-called "basket” - a light and softly padded basket which is suspended in a crane. Since the basket is soft and light there is little risk of damage to the basket itself Moreover, it is possible for crew members on deck to take hold of the basket without any great risk while it is still hanging freely in the crane hook, and to help to control it in order to ensure a soft landing on the required spot on deck. Nevertheless, the basket too is dangerous and difficult to use when there is heavy wave motion, and moreover the basket will have a very limited capacity.
- US-A-2874855 discloses a transfer apparatus between an offshore structure and a ship, the apparatus comprising a boom and provided with means for tensioning a guide line to keep it tensioned during movement of the ship.
- 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". However, the problems with the relative wave movements have been so great that to date there has been no breakthrough for any such systems on the market.
- the object of the invention is to solve both this evacuation problem as well as other more everyday problems when transferring 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.
- 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 controlled 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.
- the actual transport means is composed of a gangway on the boom 2, together with an arrangement with two evacuation chutes or socks 15 and a lift between the end of the boom 2 and the boat deck.
- the boat's (vessel 9'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 15 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 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 consideration.
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)
- Jib Cranes (AREA)
- Ship Loading And Unloading (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
Claims (8)
- Dispositif pour transférer du personnel ou du fret entre une installation fixe ou flottante et un bateau (9) en haute mer,
caractérisé en ce qu'une flèche (2, 26) équipée d'un passage de transport longitudinal est montée à pivot autour d'un axe horizontal sur l'installation, en ce qu'une extrémité extérieure de la flèche (2, 26) fait saillie au-dessus d'une position à laquelle un pont de bateau peut être manoeuvré, en ce qu'au moins une connexion approximativement verticale par cordage ou par câble (6, 16), de longueur approximativement constante, est disposée entre le pont et l'extrémité extérieure de la flèche (2, 26), en ce que l'extrémité extérieure de la flèche (2, 26) est suspendue vers le haut autour dudit axe horizontal, conservant ainsi le cordage ou le câble tendu en dépit des mouvements du bateau dans les vagues, et en ce que la connexion par cordage ou par câble (6, 16) sert de cordage de guidage ou de câble de guidage pour des moyens de transport ayant la forme d'une chaussette de sauvetage par chute (15), d'une glissière, d'un ascenseur, d'un escalier, d'un couloir ou analogue entre l'extrémité extérieure de la flèche (2, 26) et le pont du bateau. - Dispositif selon la revendication 1,
caractérisé en ce que la flèche est suspendue vers le haut au moyen d'un dispositif élastique passif (1), en ce que le bateau est équipé d'un treuil (23), en ce qu'une connexion par cordage ou par câble (6, 16) est établie par descente du cordage sur le pont du bateau à partir de l'extrémité extérieure de la flèche (2, 26), en ce que le cordage est connecté audit treuil (23), et en ce que le treuil (23) est dimensionné afin de rapprocher la flèche (2, 26) du pont du bateau par traction en surmontant la force élastique dirigée vers le haut de la flèche, et en ce que le treuil tire la flèche assez loin vers le bas pour que la force élastique dirigée vers le haut, de préférence sur la totalité du mouvement de la vague, devienne plus grande que le poids du fret qui doit être suspendu entre l'extrémité de la flèche (2, 26) et le pont du bateau. - Dispositif selon la revendication 2,
caractérisé en ce que le dispositif élastique passif (1) comprend un vérin hydraulique (5) connecté à un accumulateur hydropneumatique (5, 7), et en ce que les caractéristiques élastiques peuvent être ajustées en modifiant la quantité de gaz et/ou de liquide dans l'accumulateur à l'aide de dispositifs à pompes et/ou à vannes (10, 11) prévues à cet effet. - Dispositif selon la revendication 1,
caractérisé en ce que l'extrémité extérieure de la flèche (2, 26) est suspendue vers le haut au moyen de la force de traction d'un câble (4) s'étendant d'un point extérieur sur le bras (3) de la flèche (2, 26) et vers le haut directement ou par intermédiaire d'une poulie jusqu'à un treuil glissant connecté de façon permanente à la même installation que l'axe de pivot de la flèche. - Dispositif selon la revendication 1,
caractérisé en ce de la flèche (2, 26) est suspendue vers le haut au moyen d'un système élastique hydropneumatique actif dans lequel un détecteur de tension (13) dans la connexion par cordage (6, 16) au pont du bateau fournit des signaux de commande continus par l'intermédiaire d'un ordinateur (12) à des pompes et vannes (10, 11) afin d'ajuster les forces élastiques en fonction de la tension dans ladite connexion (6, 16) par cordage. - Dispositif selon l'une ou plusieurs des revendications précédentes,
caractérisé en ce qu'un treuil (23) disposé sur le pont du bateau, qui maintient la connexion par cordage ou par câble (6, 16) avec l'extrémité de la flèche (2, 26), comporte un embrayage glissant qui laisse filer temporairement un petit supplément de cordage si les mouvements lents de la flèche ou du fret entraînent une tension dans le cordage qui dépasse une limite de tolérance calculée. - Dispositif selon la revendication 6,
caractérisé en ce que le treuil (23) embobine temporairement davantage de cordage si la tension dans le cordage due aux mouvements lents de la flèche ou du fret chute en-dessous d'une limite de tolérance prédéterminée sur des vagues individuelles particulièrement grandes. - Dispositif selon une ou plusieurs des revendications précédentes,
caractérisé en ce qu'il y a au moins deux connexions indépendantes par cordage (16, 18) entre la flèche et le pont du bateau, la première connexion par cordage étant destinée à maintenir la flèche (2, 26) à une hauteur aussi constante que possible au-dessus du pont du bateau, tandis que la deuxième connexion par cordage (16) est connectée à un treuil glissant qui n'a pas suffisamment de force de tracton pour vaincre les forces élastiques de la flèche mais qui fournit suffisamment de force de traction pour maintenir le cordage tendu, étant ainsi adaptée à une utilisation en tant que cordage de guidage pour les moyens de transport même si la distance entre l'extrémité de la flèche et le pont du bateau devait varier quelque peu en dépit de la première connexion par cordage (18).
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 EP0614432A1 (fr) | 1994-09-14 |
EP0614432B1 true 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) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
Families Citing this family (3)
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 |
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)
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. |
-
1991
- 1991-11-26 NO NO914628A patent/NO300997B1/no unknown
-
1992
- 1992-11-26 EP EP92924055A patent/EP0614432B1/fr not_active Expired - Lifetime
- 1992-11-26 WO PCT/NO1992/000187 patent/WO1993011036A1/fr active IP Right Grant
- 1992-11-26 AU AU29581/92A patent/AU2958192A/en not_active Abandoned
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
Also Published As
Publication number | Publication date |
---|---|
EP0614432A1 (fr) | 1994-09-14 |
WO1993011036A1 (fr) | 1993-06-10 |
NO300997B1 (no) | 1997-09-01 |
NO914628D0 (no) | 1991-11-26 |
NO914628L (no) | 1993-05-27 |
AU2958192A (en) | 1993-06-28 |
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