Oil spill risks assessed for offshore arctic pipeline

10/25/2004
A detailed analysis has determined that steel pipe-in-pipe designs have less risk of failure than several alternative designs for the proposed Liberty Pipeline to transport oil ashore from a production site in the Alaskan Beaufort Sea.The study also found that risk was affected by the water depth of the hazard, the failure mode (crack, rupture, pinhole), performance of the monitoring system, third-party activities, and operational failures.The analysis defined risk as the volume of oil expected to be released over the planned pipeline's 20-year life. Conducted by BMT Fleet Technology Ltd., Kanata, Ont., it used quantitative risk assessment to compare design alternatives. Where histori...
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