Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
  • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
  • B63B11/00—Interior subdivision of hulls
  • B63B11/04—Constructional features of bunkers, e.g. structural fuel tanks, or ballast tanks, e.g. with elastic walls
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
  • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
  • B63B25/00—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby
  • B63B25/02—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods
  • B63B25/08—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid
  • B63B25/082—Arrangements for minimizing pollution by accidents

Definitions

• the invention is particularly applicable to ships. Several incidents are known where big tankers transporting crude oil have grounded or been damaged in collisions so that vast amounts of oil have leaked out and led to catastrophi- cal environmental pollutions.
• a main purpose of the present invention is thus to avoid or strongly reduce the extent of such catastrophes resulting from tanker accidents.
• the pads are filled with a fluid, possibly a compressible fluid, in order to withstand large deformations without breaking.
• a fluid possibly a compressible fluid
• the pads contain fire- retardant means.
• This might for instance be an inert gas, water or a medium which upon heating develops a fire- retardant gas.
• the pads arranged at the top of the tank contain such fire- retardant means.
• the pads are arranged so that they can be filled or emptied individually.
• the volume of the pads or their inner pressure may thus be adjusted to possible requirements with respect to the height of the double bottom and the hydrostatic pressure of the cargo.
• Both the covering and the pads may advantageously consist of an elastomeric material, preferably a material which can be welded.
• the covering is equipped with a manhole door in strategic positions, and further the space between the covering and inner surface of the tank can be equipped with means for removal of condensation or material from smaller leakages.
• the tanker may further be characterized in that the cargo tanks in the front half of the ship is equipped with covering and pads along both the bottom and the sides, whereas the tank(s) at the very rear only has (have) covering and pads along the sides.
• the invention may advantageously be used to convert other types of ships into tankers.
• the invention will thus relate to a dry-cargo ship comprising a plurality of holds, characterized in that at least one of the holds is converted to a tank by means of an arrangement according to the invention as described above.
• the ship already being a tanker from the beginning or being converted from another type of ship, will take advantage of the fact that at least some of the pads are arranged to function as ballast tanks.
• Figure 1 is a side view, partly in section, of a tanker equipped according to the invention
• Figure 2 is a section along the line II-II in Figure 1 ;
• Figure 3 is a section along the line III-III in Figure 1.
• FIG 1 a tanker is shown, which tanker generally is referred to as 1.
• the ship has four tanks 2, 3, 4 and 5, of which the two in the front are equipped with an arrangement according to the invention.
• the pads 14 can be blown up or loaded with a suitable fluid, for instance CO2, and they can be equipped with means so that the loading and a possible subsequent unloading can be performed individually.
• the pads in the same level may possibly be connected so that they can be loaded and unloaded simultaneously to be adjusted to the hydrostatic pressure of the cargo in the tank.
• the pads 14 in the bottom of the tank are arranged to be loaded with water, for instance when the ship is on a ballast trip.
• the invention advantageously can be applied on land as well.
• the invention will be particularly advantageous in ensuring safety when transporting hazardous load in tank trucks or railway carriages.
• almost all of the inner surface of the tank will be equipped with covering and pads according to the invention.
• the pads can be made as rings following the inside of the tank sides.

Landscapes

• Engineering & Computer Science (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Mechanical Engineering (AREA)
• Ocean & Marine Engineering (AREA)
• Health & Medical Sciences (AREA)
• Environmental & Geological Engineering (AREA)
• Public Health (AREA)
• Filling Or Discharging Of Gas Storage Vessels (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=19893072

Family Applications (1)

Country Status (3)

Cited By (2)

Citations (5)

• 1990
  • 1990-04-11 NO NO90901651A patent/NO901651L/no unknown
• 1991
  • 1991-04-11 WO PCT/NO1991/000057 patent/WO1991015394A1/en unknown
  • 1991-04-11 AU AU76521/91A patent/AU7652191A/en not_active Abandoned

Patent Citations (5)

Non-Patent Citations (1)

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