US3880254A - Escape boom - Google Patents

Escape boom Download PDF

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Publication number
US3880254A
US3880254A US318917A US31891772A US3880254A US 3880254 A US3880254 A US 3880254A US 318917 A US318917 A US 318917A US 31891772 A US31891772 A US 31891772A US 3880254 A US3880254 A US 3880254A
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US
United States
Prior art keywords
boom
head
water
pivotal connection
service position
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
Application number
US318917A
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English (en)
Inventor
Hugh Joseph Fitzgerald
Edward James Kwadas
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.)
Resolution Eng & Dev
RESOLUTION ENGINEERING AND DEVELOPMENT Co
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Resolution Eng & Dev
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Filing date
Publication date
Application filed by Resolution Eng & Dev filed Critical Resolution Eng & Dev
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Publication of US3880254A publication Critical patent/US3880254A/en
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Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63C—LAUNCHING, HAULING-OUT, OR DRY-DOCKING OF VESSELS; LIFE-SAVING IN WATER; EQUIPMENT FOR DWELLING OR WORKING UNDER WATER; MEANS FOR SALVAGING OR SEARCHING FOR UNDERWATER OBJECTS
    • B63C9/00—Life-saving in water
    • B63C9/22—Devices for holding or launching life-buoys, inflatable life-rafts, or other floatable life-saving equipment
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor

Definitions

  • This invention concerns an escape device. and more particularly an escape boom which is particularly useful as a means to provide apparatus. and a method. which men may utilize to get off ofa burning or otherwise hazardous offshore platform.
  • the present invention contemplates a boom which is pivotally attached to the platform. and which upon release will pivot to a generally horizontal position.
  • Running from the rig platform. to the extended end of the boom. are a number of lifelines. which are for utilization by the men on the rig to slide down in the event of fire.
  • the extended end of the boom may include a head member. which provides a platform for the men to collect on while awaiting rescue by boats.
  • the boom is biased in such a manner that the natural forces of buoyancy or gravity will pivot the boom outwardly from the rig. when released.
  • FIG. I is a general representation of an offshore platform showing the boom of the present invention on the left in a standby position. and on the right in an in service position.
  • FIG. 2 is a side view of one embodiment of the invention. showing the escape boom in a standby position.
  • FIG. 3 is a front view. partially in section. of the boom shown in FIG. 2.
  • FIG. 4 is a partial side view. showing one form of head attached to a boom.
  • FIG. 5 is a side view of a variant type of boom. similar to that shown in FIG. 2.
  • FIG. 6 is a front view of the variant boom shown in FIG. 5.
  • FIG. 7 is a partial side view. showing the boom of FIG. 5 when in an in service position.
  • FIG. 8 is a side view of the second embodiment of the invention. wherein the boom is pivotally attached to the platform at the deck.
  • FIG. 9 is a side view of a third embodiment of the invention. showing this embodiment in both standby. and in service positions.
  • FIG. 10 is an enlarged partial side view of the third embodiment. shown in FIG. 9, when in an in service position.
  • FIG. II is a partial side view showing a boom of the first embodiment and a method of controlling the re trieving line.
  • the reference numeral It generally designates the escape boom of the present invention. which is shown mounted on a rig I2 in the water [4.
  • the rig [2 may be a production platform. or a drilling platform. both for use in an offshore environment. and may be fixed to the ocean bed. or may be of the floating variety.
  • the deck 16 of the rig 12 is substantially above the mean level of the water 14. so that it is unaffected by waves. even during storm conditions. Mounted on the deck may be appropriate drilling structures [8. living quarters 20. and store rooms 22.
  • the escape boom 10. shown on the left portion of FIG. 1 is in the standby position. such that the boom 24 is substantially vertical.
  • the boom 24 is attached to the legs 26 and the rig I2 by a pivotal connection 28.
  • the opposite end of the boom 24 is connected to a head 30. which may be likewise pivotally connected. Extending from the head 30 to appropriate standards 32 on the rig 12 are one or more lifelines 34.
  • the men may slide. or climb. or use various mechanical devices for traveling down the lifelines 34 to the head 30.
  • the lifelines may be attached to the rig 12 at a variety of locations and elevations.
  • the boom 24 is pivotally attached. by the pivotal connection 28 to the legs 26 of the rig l2. This pivotal connection is well below the surface of the water 14. and the boom 24 extends upwardly to the deck 16. of the rig l2.
  • Mounted on the declt I6 is an appropriate winch 36. upon which is wound a retrieving line 38 which connects to the head 30 mounted on the boom 24.
  • a storm latch 40 which is simply a device to prevent sideways movement of the boom 24. because of wave action. when it is in a vertical. or standby position.
  • standards 32 are also mounted on the deck 16.
  • Lifelines 34 are connected from the head 30 to the standards 32 and thence to lifeline spools 42. mounted on the deck I6.
  • the connection of the lifelines 34 to the head 30 may be by way of stanchions 44. which are perhaps better seen in FIGS. 4 and 7.
  • the head 30 is buoyant. and is here shown connected to the boom 24 by the simple pivotal connection 46.
  • the pivotal connection 28. which is beneath the water 14 simply comprises a T-shaped member 48. through which passes a shaft 50.
  • Each end of the shaft 50 is appropriately secured to legs 26 of the rig 16 by means of the clamp assembly 52.
  • Extending from each clamp assembly to the boom 24. adjacent the head 30 may be wire rope stays 54 whose function are to prevent wave forces from destroying the escape boom 10.
  • the boom 24. when in its standby position. is not truly vertical. but is instead offset from the vertical by an angle 56. which is sufficient to cause gravity to launch the escape boom 10. even during a storm.
  • This angle causes an unbalanced horizontal component of force large enough to cause natural launching of the boom.
  • the winch 36 and retrieving line 38 are utilized.
  • To place the escape boom I in the in service position. many alternatives may be utilized. The simplest is. of course. to simply part or release the retrieving line 38. This might be done remotely by an explosi ⁇ e charge. or by pulling a pin. or by a fuseable link. or by releasing the brake on the winch 36.
  • the escape boom is shown as 10' in FIG. 2.
  • the boom 24 contains a number of compartments or tanks. Below the surface of the water 14 may be one or more set tanks 58, while above the water may be one or more trim or tuning tanks 60.
  • the function of the compartmented boom 24 is to provide a controlled deceleration of the boom as it is launched. and also to provide for final position of the boom when in its in service position. It is desired that the boom 24 have an overall negative buoyancy (i.e. will sink but both the set tanks 58 and trim tanks 60 may be adjusted to control the amount of negativeness. as well as controlling the time or speed of descent of the boom. and the ultimate altitude or angle of the boom when in its in launch (10') position.
  • the set tanks 58 will have no controls. but may be arranged to be either positive or negative in buoyancy.
  • the trim tanks 60 may contain ballast. such as water.
  • lead. mud. air. polyurethane. or the like. and. being generally above the surface of the water 14. may be adjusted. without the use of divers.
  • the head 30 must also support men who reach it by means of the lifelines. and may also be compartmented to contain emergency provisions and supplies.
  • the head 30 maybe directly connected to the boom 24 by means of the pivotal connection 46. It may also be separated from the boom 24 by an articulated arm 62. as seen in FIG. 7. which is in turn pivotally connected to the boom 24 and head 30 by means of the pivotal connections 64 and 66. at either end thereof. When the articulated arm 62 is utilized.
  • the boom 24 may be further below the surface of the water 14. thereby allowing more unrestricted access to that portion of the head 30 which is adjacent the rig 12.
  • the retrieving line 38 is shown connected from the head 30, and more particularly from the stanchions 44 upwardly to the deck of the rig.
  • This retrieving line configuration when utilized. may be used for pulling the boom upwardly to the standby position. and may also be used with an appropriate winch 36 to prevent sinking of the head 30 should its buoyant compartment become damaged. if the winch is provided with a maximum payout device.
  • the head will be at least 50 feet away from the rig l2. and in most instances. the distance will be 100 feet or greater.
  • FIGS. 5 and 6. a variant of the first embodiment of the invention is shown.
  • the boom taking the shape of an A-frame device.
  • the boom 68 is pivotally connected by means ofa pivotal connections 70 to the clamp assemblies 52. which are in turn attached to appropriate legs 26 of the rig I2.
  • the head 30 is shown attached to the boom 68 by means of the articulated arm 62.
  • the various set tanks 58 and trim tanks 60 may be utilized in the A- frame boom 68.
  • the remaining portions which have been given numbers corresponding to similar parts on FIGS. 2 and 3. will require no further description.
  • FIG. 8 a second embodiment of the present invention is shown.
  • the escape boom is again pivotally connected to the rig. but this time at the top. and buoyant forces are utilized to lift the boom from its substantially vertical standby position to the in service position shown in dotted lines.
  • the escape boom I0 is attached to the rig 12 by means of the pivotal connection 72 on the deck I6 of the rig. Extending from this pivotal connection 72 is the boom 74 which terminates in the head 76, attached therto by the pivotal connection 78.
  • Mounted on the deck 16 is an appropriate winch which mechanically connects to the boom 74 by means of the retrieving line 82.
  • Appropriate pulleys 84 are utilized to control the retrieving line 82, and a storm collar 86 may be attached to the leg 26 of the rig to prevent wave action from damaging the boom 74.
  • the boom 74 is offset from the vertical by an angle 88 which is sufficient to cause the horizontal component of force to launch the escape boom 10 to the position shown in dotted lines. as 10'.
  • the natural force used for such launching. in this embodiment is buoyancy. and again compartments or tanks are utilized within the boom 74.
  • the boom may include set tanks 90. as well as trim tanks 92.
  • the trim tanks are above the water. and may be ballasted. or deballasted in conjunction with the set tanks 90 to provide a boom 74 which is slightly positive.
  • this embodiment may also include steps 94 along with a guide rail 96 to enable men to remove themselves from the deck I6 by walking down the boom 74.
  • steps 94 along with a guide rail 96 to enable men to remove themselves from the deck I6 by walking down the boom 74.
  • the various features shown with the first embodiment are applicable to this second embodiment. including the use of the articulated arm 62. and various means for launching the escape boom by means of fuseable links. and the like.
  • the escape boom 10 is pivotally connected to the rig at its upper end. and when a standby position is essentially horizontal.
  • the natural force of gravity is utilized to lower the escape boom so that the head floats in the water. when in service. More particulaly.
  • the escape boom 10 is mounted on the rig I2 above the water 14 adjacent the deck 16.
  • a boom 98 is pivotally connected. by means of the pivotal connection 100 to the rig 12.
  • To the opposite end of the boom is attached an appropriate head 102. which may also include an articulated arm I04. if desired.
  • Attached to and extending from the opposite end of the boom 98 is a counterweight arm 106. to which is fixed the counterweight I08.
  • the pivotal connection ")0 is arranged to allow the boom 98 not only to pivot downwardly, so that the head [02 is in the water 14, but also may be arranged to allow the boom 98 to swivel or swing outwardly. so that the head 102 is not simply below the deck 16. but is distant therefrom as well.
  • FIG. 10 one means for providing such a pivotal connection 100 is shown.
  • a trunion ll0 interconnects the boom 98 and the rotating plate 112.
  • the rotation of the rotating plate H2 is controlled by the cam "4 on the column 116. which is in turn attached to the deck 16.
  • cam followers 118 both the angular displacement and rotation of the boom 98 are controlled, and the counterweight I08 is adjusted so that the boom is negatively biased. such that it will assume the in service position shown in FIG. 10. when released.
  • the swiveling and rotating action may be provided with a vertical slot and a simple inclined plane. or by independent rotating and pivoting motions.
  • the boom 98 also contains steps 120 as well as a guide rail 122. and may include the lifelines 34 previously depicted with the other embodiments of the invention. it might also be noted. particularly with reference to this third embodiment. that in offshore locations wherein ice is present. it is not necessary that the head 102 actually float in the water. but instead it may be suspended above the surface.
  • the head may include davits to which an appropriate lifeboat. or floats. or similar devices may be attached.
  • a nonbuoyant head 124 may be provided at the end ofa simple boom 126, if the particular location of the escape boom 10 does not require such survival equipment.
  • the retrieving line 38 is here shown going to a winch I28. which is in turn controlled by the hydraulic snubber I30, or other appropriate device. to allow the boom I26 to descend to the in service position, while regulating the speed of descent. and perhaps the ultimate service angle.
  • the lifeline 34 is attached to the head 124 and to the takeup spool 42 through the standard 32. The position of the lifeline 34 and retrieving line 38 are shown in dashed lines when the boom 126 is in the in service position.
  • the present invention provides both apparatus and a method or new use for apparatus which would allow a man on a rig to remove himself from. while at the same time getting to a distant point. and providing an assembly point or head to hang onto once he has removed himself from the rig. in each in- 5 stance. an offsetting and unbalanced natural force is utilized to move the escape boom from its standby position to its in service position. and in each instance a method of controlling the speed and ultimate angle of displacement of the escape boom is provided. whether 10 by snubbers. cams. buoyancy. or the like.
  • a method for providing means for escaping from an offshore. water surrounded. structure including:
  • a method for providing means for escaping from an offshore. water surrounded. structure including:
  • An escape boom for use in providing a means for men to get off of and away from the deck of an offshore. water surrounded. structure as well as a collection point for the men. including:
  • an elongate boom a head mounted on one end of the boom. a pivotal connection at the other end of the boom. pivotally connecting the boom to the structure. the boom. when in a standby position being adjacent the structure. and when in an in service position being pivotally extended from the structure. the boom. when in the standby position being biased to pivot to the in service position.
  • retaining means releasably securing the boom in the standby position. and at least one lifeline extending from the structure to the head when the boom is in the in service position.
  • an articulated arm pivotally interconnecting the head and the boom.
  • At least one stanchion extending upwardly from the head when the boom is in the in service position.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Ocean & Marine Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Jib Cranes (AREA)
  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
  • Emergency Lowering Means (AREA)
US318917A 1971-12-30 1972-12-27 Escape boom Expired - Lifetime US3880254A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB6068871A GB1420919A (en) 1971-12-30 1971-12-30 Escape boom

Publications (1)

Publication Number Publication Date
US3880254A true US3880254A (en) 1975-04-29

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ID=10485924

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Application Number Title Priority Date Filing Date
US318917A Expired - Lifetime US3880254A (en) 1971-12-30 1972-12-27 Escape boom

Country Status (8)

Country Link
US (1) US3880254A (it)
JP (1) JPS4877596A (it)
DE (1) DE2264043A1 (it)
FR (1) FR2167115A5 (it)
GB (1) GB1420919A (it)
IT (1) IT986874B (it)
NL (1) NL7217866A (it)
NO (1) NO139009C (it)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3994365A (en) * 1974-11-04 1976-11-30 Georgia-Pacific Corporation Apparatus for positioning person within container tank
US4202427A (en) * 1978-05-22 1980-05-13 Santa Fe International Corporation Derrick escape system
US4294331A (en) * 1979-12-12 1981-10-13 The Reynoir Company Method and system for escaping from an offshore drilling platform
US4341286A (en) * 1980-11-12 1982-07-27 Gregory Charles A Fire escape improvement
US4421051A (en) * 1979-10-29 1983-12-20 Sedco, Inc. Auxiliary boom for emergency evacuation
US4442918A (en) * 1983-06-15 1984-04-17 X-Pert Well Service, Inc. Emergency escape device
US4660677A (en) * 1986-07-28 1987-04-28 Conoco Inc. Personnel evacuation apparatus for an offshore platform
US4703832A (en) * 1986-08-08 1987-11-03 Fontenot Ozeman J Safety escape apparatus for elevated structures
US4781144A (en) * 1985-12-04 1988-11-01 Obrien Daniel P Off-shore drilling installation evacuation system
US5341761A (en) * 1993-06-04 1994-08-30 Obrien Daniel P Evacuation system
US6138605A (en) * 1998-08-05 2000-10-31 Seascape Systems Limited Access and evacuation apparatus with articulated arm
US6357380B2 (en) * 2000-02-14 2002-03-19 Swath Europe Limited Lightweight rescue boat davit
WO2008054223A2 (en) 2006-10-29 2008-05-08 Aker Engineering & Technology As System for evacuation

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US772094A (en) * 1904-04-15 1904-10-11 Otto C Fosselman Counterbalanced stairway or ladder.
US3731761A (en) * 1971-08-19 1973-05-08 R Glenn Floating pier with self adjusting stairway assembly

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4328315Y1 (it) * 1966-04-21 1968-11-21

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US772094A (en) * 1904-04-15 1904-10-11 Otto C Fosselman Counterbalanced stairway or ladder.
US3731761A (en) * 1971-08-19 1973-05-08 R Glenn Floating pier with self adjusting stairway assembly

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3994365A (en) * 1974-11-04 1976-11-30 Georgia-Pacific Corporation Apparatus for positioning person within container tank
US4202427A (en) * 1978-05-22 1980-05-13 Santa Fe International Corporation Derrick escape system
US4421051A (en) * 1979-10-29 1983-12-20 Sedco, Inc. Auxiliary boom for emergency evacuation
US4294331A (en) * 1979-12-12 1981-10-13 The Reynoir Company Method and system for escaping from an offshore drilling platform
US4341286A (en) * 1980-11-12 1982-07-27 Gregory Charles A Fire escape improvement
US4442918A (en) * 1983-06-15 1984-04-17 X-Pert Well Service, Inc. Emergency escape device
US4781144A (en) * 1985-12-04 1988-11-01 Obrien Daniel P Off-shore drilling installation evacuation system
EP0255191A1 (en) * 1986-07-28 1988-02-03 Conoco Phillips Company Personnel evacuation apparatus for an offshore platform
US4660677A (en) * 1986-07-28 1987-04-28 Conoco Inc. Personnel evacuation apparatus for an offshore platform
US4703832A (en) * 1986-08-08 1987-11-03 Fontenot Ozeman J Safety escape apparatus for elevated structures
US5341761A (en) * 1993-06-04 1994-08-30 Obrien Daniel P Evacuation system
US6138605A (en) * 1998-08-05 2000-10-31 Seascape Systems Limited Access and evacuation apparatus with articulated arm
US6357380B2 (en) * 2000-02-14 2002-03-19 Swath Europe Limited Lightweight rescue boat davit
WO2008054223A2 (en) 2006-10-29 2008-05-08 Aker Engineering & Technology As System for evacuation

Also Published As

Publication number Publication date
NO139009B (no) 1978-09-11
GB1420919A (en) 1976-01-14
NL7217866A (it) 1973-07-03
JPS4877596A (it) 1973-10-18
AU5062872A (en) 1974-07-04
FR2167115A5 (it) 1973-08-17
DE2264043A1 (de) 1973-07-12
IT986874B (it) 1975-01-30
NO139009C (no) 1978-12-20

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