In 1996, ARCO Technology and Operations Support (ARCO TOS) began considering Highly Tensioned Suspended Pipelines (HTSPs) as a promising concept for above ground, cross-country pipelines in Arctic regions. HTSPs resemble high voltage, cross-country power lines. Similar construction methods and support towers are used. The primary differences are that the pipelines are larger in diameter and are supported against out-of-plane wind loads. Three years of development work are summarized in this paper. This work includes analytical modeling, pipeline code compliance, conceptual design of components, and construction studies. Fatigue resistance under North Slope Alaska wind conditions is estimated. HTSPs are judged to be technically feasible and a cost effective alternative to traditional elevated pipelines.

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