Methods for intelligent composite renewal system for standalone, storage, and renewed pipelines, including for reduced carbon emission and for conversion of in place pipelines for conveyance of hydrogen and other clean fuels

A method for renewing a host pipe, the method comprising:

• fashioning a tubular composite structure comprising at least one tubular assembly, the at least one tubular assembly comprising:
• a sealing layer situated at an innermost portion of the at least one tubular assembly, wherein the sealing layer is fashioned into a cylinder from at least one flat thermoplastic sheet, forming a cylindrical sealing layer,
• an axial reinforcement layer adjacent to the sealing layer,
• an outermost protective layer, and
• one or both of at least one hoop reinforcement layer or at least one sensor array layer;
• and
• fitting the tubular composite structure within an interior of the host pipe.