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PRCI PR-003-9604
- Line Rupture and the Spacing of Parallel Lines
- Report / Survey by Pipeline Research Council International, 04/02/2002
- Publisher: PRCI
$448.00$895.00
L51861e
Battelle Memorial Institute
Need: High-pressure gas-transmission pipelines have historically been constructed within quite generous right-of-ways. Single-use corridors with widths on the order of 100 feet were not uncommon. As gas demand increased and the right-of-way availability decreased, multiple-use corridors became the norm. This situation increases the chance that an incident on a gas pipeline could affect adjacent services, or cause an incident on an adjacent pipeline. The use of liberal spacings between pipelines has, thus far, limited such occurrences. However, there is a desire to reduce the distance between parallel pipelines with a view to limiting the impact on the environment along the right-of-way. The work presented here was motivated by concern for possible prescriptive regulatory action, driven by environmental and property rights issues, that could mandate the reduction of spacing between adjacent pipelines. This work deals specifically with adjacent high-pressure gas-transmission pipelines.
Benefit: This report addresses the need for reliable, validated models to assist gas companies in determining the minimum spacing between adjacent pipelines to help ensure safe and reliable operation in the event of a rupture. The objective is to evaluate the exposure of a pipeline due to the rupture and ignition of the escaping gas of an adjacent pipeline. To eliminate semantic confusion, the line that ruptures will be termed the first pipeline, and the rupture is termed the initial or original rupture. The pipeline which is affected by this rupture is termed the adjacent pipeline.
Result: The development and application of such a pair of models are presented here. These models are used to formulate line-spacing guidelines to avoid rupture in an adjacent pipeline.
Battelle Memorial Institute
Need: High-pressure gas-transmission pipelines have historically been constructed within quite generous right-of-ways. Single-use corridors with widths on the order of 100 feet were not uncommon. As gas demand increased and the right-of-way availability decreased, multiple-use corridors became the norm. This situation increases the chance that an incident on a gas pipeline could affect adjacent services, or cause an incident on an adjacent pipeline. The use of liberal spacings between pipelines has, thus far, limited such occurrences. However, there is a desire to reduce the distance between parallel pipelines with a view to limiting the impact on the environment along the right-of-way. The work presented here was motivated by concern for possible prescriptive regulatory action, driven by environmental and property rights issues, that could mandate the reduction of spacing between adjacent pipelines. This work deals specifically with adjacent high-pressure gas-transmission pipelines.
Benefit: This report addresses the need for reliable, validated models to assist gas companies in determining the minimum spacing between adjacent pipelines to help ensure safe and reliable operation in the event of a rupture. The objective is to evaluate the exposure of a pipeline due to the rupture and ignition of the escaping gas of an adjacent pipeline. To eliminate semantic confusion, the line that ruptures will be termed the first pipeline, and the rupture is termed the initial or original rupture. The pipeline which is affected by this rupture is termed the adjacent pipeline.
Result: The development and application of such a pair of models are presented here. These models are used to formulate line-spacing guidelines to avoid rupture in an adjacent pipeline.
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