Method for designing high pressure low cost prestressed composite wrapped transmission line system

A method comprising:

• defining operating parameters for a hypothetical reinforced pipeline comprising a hypothetical metallic liner having a hypothetical reinforcement therearound, said hypothetical metallic liner having a specified minimum yield strength, said operating parameters comprising an operating pressure at a given internal diameter for said hypothetical metallic liner;
• defining a first hypothetical thickness for said hypothetical metallic liner and a second hypothetical thickness for said hypothetical reinforcement;
• determining hypothetical operating stresses on a length of said hypothetical reinforced pipeline based on said operating parameters, said first hypothetical thickness of said hypothetical liner, said second hypothetical thickness of said hypotbetical reinforcement, said specified minimum yield strength, and a variable yield strength of said hypothetical metallic liner that is greater than said specified minimum yield strength;
• based on said hypothetical operating stresses determining a safe operating thickness for an actual metallic liner and a safe operating thickness for an actual reinforcement therearound, said safe operating thickness for said actual metallic liner and said safe operating thickness for said reinforcement being effective to limit stresses on an actual reinforced pipeline operating at said operating pressure to a predetermined percentage of said specified minimum yield strength or less and to said predetermined percentage of said variable yield strength or less;
• providing said actual metallic liner and said actual reinforcement;
• applying said actual reinforcement around said actual metallic liner, thereby forming said actual reinforced pipeline;
• pressurizing said actual reinforced pipeline to cause in the range of from about 0.75 to about 1% plastic yielding along portions of said actual reinforced pipeline having said specified minimum yield strength.