Pipeline operators have sought to advance pipeline safety through integrity management programs. However the fundamental feature of the pipeline causing the gradual loss of integrity, its composition of carbon or low alloy steel, is relatively unchanged for the past half century. Flexible steel pipelines can be pulled into existing deteriorating and/or damaged conventional steel oil and gas pipelines as a rehabilitation operation. This pipeline rehabilitation method can renew structural integrity, improve flow characteristics, provide added corrosion resistance to the pipeline system and avoid the environmental/third party damage that exists with other methods of repair.

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