Ocean Engineering Equipment and Technology ›› 2014, Vol. 1 ›› Issue (2): 160-165.

• Orginal Article • Previous Articles     Next Articles

Reviews of the Cargo Containment Systems of Large Scale LNG Carriers and the Welding of Related Low Temperature Metals

Wen-hu LIN1, Xue-ming HUA1, Yi-xiong WU1, Yong-sheng TANG2, Hui-ping ZHANG2   

  1. 1. Shanghai Key Laboratory of Materials Laser Processing and Modification, Shanghai Jiao Tong University, Shanghai 200240, China
    2. Hudong-Zhonghua Shipbuilding (Group) Co.,Ltd., Shanghai 200129, China
  • Received:2014-05-29 Online:2014-03-29 Published:2017-08-12


Materials selection of liquefied natural gas (LNG) cargo containment systems has influence on the design of structure, safety and cost. As cryogenic temperature metals make up the most in LNG carriers, they are closely related to the design and manufacture. Considering the bearing part and insulation part of containment system, four different metals including invar alloy, 304L stainless steel, Ni9 steel and A5083 aluminum alloy can be taken into account. Thermal conductivity influences the insulation layer's design and welding metallurgy, while low mechanical strength improves the thickness of plate that influences the processing, moving, installation and cost. Material parameters and welding techniques of them are summarized.

Key words: liquefied natural gas carrier, low temperature metal, mechanical properties, weldability

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