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CGA 341-2017
Specification for Insulated Cargo Tank for Nonflammable Cryogenic Liquids - 7th Edition
This standard contains specifications for a cargo tank with very efficient insulation and relatively low heat leak to the lading. This cargo tank resembles an oversized thermos bottle because the liquid container is supported in an approximately concentric manner within the outer jacket, with insulation contained in the annular space. Thus, the outer jacket is often the primary structural member anchored to the truck bed or the tandem and upper coupler (fifth wheel) assemblies.
Compressed Gas Association, Inc. [cga]