▎ 摘　　要

NOVELTY - The pressure vessel has an insulation layer part (300A) fixed between an inner shell (100A) and an outer shell (200A). The outer shell covers an outer part of the inner shell. The inner shell is internally stored with liquefied natural gas (LNG). A graphene layer (110A) is provided with multiple layers. The graphene layer is formed in the inner shell. A glue bonding layer (130A) is fixed between a SUS layer (120A) and the graphene layer. The SUS layer and the graphene layer are filled with the LNG. The outer shell is made of mild steel. USE - Pressure vessel for use in a marine structure (all claimed) to store LNG. ADVANTAGE - The inner shell is formed with the graphene layer that accommodates generation evaporated gas in the graphene layer, so that the LNG can be safely stored and transported. The pressure vessel increases economic benefit. DESCRIPTION OF DRAWING(S) - The drawing shows a sectional view of a pressure vessel for storing LNG. Inner shell (100A) Graphene layer (110A) SUS layer (120A) Glue bonding layer (130A) Outer shell (200A) Insulation layer part (300A)