Development of an internal insulation system for LPG carriers

Journal Article · Tue Jan 01 04:00:00 EST 1974 · Proc. 1st Int. LNG/LPG Congress; (United States)

OSTI ID:6983403

Worboys, R V; Young, S F

The Shell Internal Insulation System, developed by Shell Research Ltd. and Shell International Marine Ltd. to reduce the cost of LP-gas tankers, consists of polyurethane foam sprayed directly onto the inside surface of the inner hull of the vessel to provide both an insulation and containment system for the cargo. The ability of the system to fulfill both functions under the most severe conditions for the lifetime of the tanker was proved in an extensive development and testing program which began in 1965. The tests were carried out in consultation with Lloyds Register of Shipping. Provided the correct precautions are taken during application, the insulation system can be applied in a shipyard with the same degree of safety as when applying external insulation to free-standing tanks. The insulation was shown to be readily repairable, during service if necessary. Repairs can also be carried out on the inner hull after completion of the insulation. The system is not suitable for carrying ammonia. The insulation system, available for licensing since 1970, will be installed by Mitsubishi Heavy Industries on five 2.68 million cu ft (76,000 cu m) LP-gas tankers, with the 1st scheduled for delivery in 1976.

• OSTI ID: 6983403
• Journal Information: Proc. 1st Int. LNG/LPG Congress; (United States), Journal Name: Proc. 1st Int. LNG/LPG Congress; (United States)
• Country of Publication: United States
• Language: English

Related Subjects

03 NATURAL GAS
032000* -- Natural Gas-- Transport
Handling
& Storage
COLLOIDS
DISPERSIONS
FLUIDS
FOAMS
LIQUEFIED GASES
LIQUEFIED PETROLEUM GASES
LIQUIDS
MARITIME TRANSPORT
MATERIALS
NATURAL GAS LIQUIDS
ORGANIC COMPOUNDS
ORGANIC POLYMERS
PETROCHEMICALS
PETROLEUM PRODUCTS
PLASTICS
POLYAMIDES
POLYMERS
POLYURETHANES
SHIPS
SYNTHETIC MATERIALS
TANKER SHIPS
THERMAL INSULATION
TRANSPORT