The Intelligent Valve Placement (IVP) approach that considers risk (defined as likelihood × consequence) reduction techniques to identify optimum locations for sectionalizing (block valves) for new liquid transmission pipelines has been enhanced to straightforwardly optimize valve placements based on the effectiveness and potential volume out reduction of valves. Valve effectiveness is a measure that quantifies the effectiveness of a valve in reducing volume out for pipe sections that can affect one or more identified sensitive areas. The valve effectiveness calculation does not adequately consider those situations where there is significant volume out reduction potential with few or no sensitive areas present, thus the potential volume out reduction for a given valve must also be considered. The enhanced IVP approach incorporates risk reduction by reducing consequence. This is achieved through potential reduction of impacts to sensitive areas and potential volume out reduction for pipeline ruptures. A method of establishing a decision making threshold for both the valve effectiveness and potential volume out calculations has been incorporated into the approach. The valve placement effectiveness and volume out calculations are applied in an iterative manner that facilitates quick and simplified interpretation and identification of optimum valve placement. The IVP approach meets and exceeds the requirements set forth in both the National Energy Board’s On-shore Pipeline Regulations and the U.S. Department of Transport’s Emergency Flow Restricting Device expectations set out in its HCA Rulemaking. This paper outlines the approach used to augment decision making within the enhanced IVP process and presents its application to new pipeline development. Limitations to the approach are also addressed.

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