Design of fibre-reinforced polymer overwraps for pipe pressure

Conventionally, most steel pipelines were repaired by removing the corroded section and replacing it with a new pipe or by reinforcing the defected section with an external steel sleeve (Mohitpour et al., 2003). Recently, fibre-reinforced polymer (FRP) composite overwrap repair systems have been introduced and overwhelmingly accepted as an alternative repair system for pipelines. 

Repair with FRP materials presents several advantages over conventional methods. Firstly, the repair is quicker to be performed as the application is easy and straightforward. Secondly, the pipeline can continue to operate while the repair is being carried out. Thirdly, the risk of fire and explosion due to welding or cutting is completely eliminated (Duell et al., 2008). Last but not the least, and contrary to the common belief, FRP repair is more economical than other repair methods conventionally used. In one comparative study (Koch et al., 2001), it was found that FRP repair was in fact 24% 

Rdiabilitation of Pipdines Usdng Uber-rdnforced Polym RP) Composites. http //dx.doi.oi l0.1016ffi978-0-85709-684-5.00010 2 

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

The behaviour of pipes repaired with composite overwraps has been studied by many researchers in order to understand the effects of different parameters such as material properties and loading conditions. 

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Design of fibre-reinforced polymer overwraps for pipe pressure... 

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