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Pipelines requirement of the pipeline. While a 12in pipeline. In low carbon steel buried pipeline with a 5LPP temperature insulation system can typically have a applications 2

U-value of 3 W/m K, a 15mm PVDF liner (for example 2 o will result in a U-value around 4 W/m K. <60 C), where a

This can provide substantial cost saving, PE liner can be as the cost of outer insulation is often used, the cost higher when compared to the cost of of procurement carbon steel. and fabrication

The insulating impact of the inner can be 80% polymer liner on the inside of the cheaper than the pipe will also result in a reduced steel equivalent clad temperature, which will also enhance pipeline and the mechanical behavior of the pipe- 40% cheaper line, minimizing thermal expansion than carbon and propensity for global buckling. An steel pipeline installation of polymer liner into steel string.

indicative example of the reduction in with corrosion steel temperature when utilizing a PVDF allowance.

Risk reduction polymer liner is presented in the ? gure (Figures presented are representative of below. a 12im X65 pipeline and are indicative Corrosion is a critical problem that only). can lead to major pipeline failure, and

Economics advantages

Further opex reductions will be in some cases total shutdown, if not

The use of polymer liners in subsea pipe- achieved by negating the need for cor- monitored and managed properly. This lines can result in substantial cost reduc- rosion inhibitors, frequent pigging and impacts the operator’s business with tion for both capital expenditure (capex) energy (pumping) costs. These savings down time, loss of supply and the signi? - and operational expenditure (opex). The are measured across the total life of a cant cost of remedial work. cost of procurement and fabrication of a pipeline, and adopting at the early stages Further to the impact on an operator’s

PVDF lined pipeline for service appli- of a project means that IRM costs can be schedule and bottom line however, is o cation to 130 C is about 50% cheaper drastically reduced throughout the aver- the dramatic consequences which can compared with the equivalent CRA clad age life span of a pipeline. result from pipeline failure. Polymer

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