Design of an FRPC repair for riser

The composite material wrapped on the riser must he able to sustain stresses induced hy various loadings to which a riser is susceptible. These stresses must not exceed the designated 

The interfacial bond between the steel riser and the composite materials must be well-established such that the composite will not delaminate from the steel surface. If the steel-composite interface bond is not strong enough, adequate stress transfer from the steel riser to the composite material will not take place. 

Before conducting a repair on a corroded pipe, analysis must be done to determine whether a repair is sufficient to restore the strength of the riser. This can be evaluated using the codes provided in ASME B31G (1991). The standard used here is compliant for onshore pipelines where the equations are only functions of the corrosion dimensions and internal pressure. Nevertheless, it provides a basis for determining the required thickness of the composite laminate. 

Burst failure pressure of corroded pipe, Pj corroded- 

Rehabilitation of Pipelines Using Fiber-reinforced Polymer (FRP) Composites 

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