Method of fabricating type 4 cylinders and arranging in transportation housings for transport of gaseous fluids

A lightweight intermodal container or road trailer based system for transporting refrigerated gaseous fluids, comprising:

• an enclosed and insulated transportation housing;
• a plurality of low-temperature resistant pressure vessels at least three feet in diameter secured within said transportation housing for containing said gaseous fluids, each of said pressure vessels including a body portion and opposing domed end portions attached to said body portion, each of said domed end portions having a wall thickness that is greater than a wall thickness of said body portion and an opening;
• and
• at least one port boss affixed to each of said domed end portions, said at least one port boss including an inner component and an outer component, said inner component including an inner pipe and an inner plate transversely extending from said inner pipe, and said outer component including an outer pipe and an outer plate transversely extending from said outer pipe, wherein said inner pipe is inserted through said opening in each of said domed end portions and through said outer pipe such that said inner component and said outer component are compressed together to cause said inner plate to engage an inner surface of a respective one of said domed end portions and said outer plate to engage an outer surface of said respective one of said domed end portions to affix said at least one port boss to each of said domed end portions.