Storage vessel for ship transport of liquefied gas

Patent · Tue May 13 04:00:00 EDT 1975

OSTI ID:6929298

Johnson, P R; Rothrock, E W; Lange, K W; Kircik, W J; Davis, R N

Chicago Bridge and Iron Co. developed and improved self-supporting tank design for LNG tankers which features added safety, minimizes the concentration of stresses in the ship's hull, and allows the ready installation of insulation. The tank generally consists of an enclosed circular metal shell with an upwardly projecting lower walled portion joined at its bottom edge to the ship-hold bottom, transferring the vertical force of the liquid product to the hold bottom. Within the lower walled portion of the tank shell, a metal secondary bottom is positioned above the hold bottom, with a primary bottom positioned above it. A load-bearing insulation system is positioned between the secondary bottom and the ship-hold bottom. Each of the tank bottoms is usually constructed of thin metal and functions as a leaktight liner. The tank shell and primary and secondary bottoms should be constructed of cryogenically safe metals, but the new design allows the use of conventional carbon steel for the ship's hull. In the event of a primary-bottom failure, the cryogenic liquid will flow into the space below the primary bottom where it will be restrained from further flow by the secondary bottom and kept from damaging the ship-hold bottom by the insulation system.

• Assignee: Chicago Bridge and Iron Co.
• Patent Number(s): US 3882809
• OSTI ID: 6929298
• Country of Publication: United States
• Language: English

Related Subjects

03 NATURAL GAS
032000* -- Natural Gas-- Transport
Handling
& Storage
035000 -- Natural Gas-- Storage-- (1989-)
CONTAINERS
DESIGN
ENERGY SOURCES
FLUIDS
FOSSIL FUELS
FUEL GAS
FUELS
GAS FUELS
GASES
LIQUEFIED GASES
LIQUEFIED NATURAL GAS
MARITIME TRANSPORT
MECHANICAL STRUCTURES
NATURAL GAS
SAFETY
STORAGE FACILITIES
SUPPORTS
TANKS
THERMAL INSULATION
TRANSPORT
WALLS