Evaluation of Flooding Potential on Gas Pipelines in Tulare County, California
Publication: Lifelines 2022
ABSTRACT
There is a lack of study in the literature for flood evaluation of gas pipelines. This paper shows the evaluation of flooding potential on the high-pressure gas pipelines located within flood zone per FEMA maps. The gas pipelines passing the creek are divided into two categories: the elevated pipelines and the buried pipelines. The proper vertical distance between the thalweg and the elevated pipeline is determined per the flood depth. The optimized cover of buried pipeline also is determined per the scour depth of flood. To calculate the scour depth, the equations in the literature are used in this study. The results of the study show the inconsistency of these equations. It is suggested that more data needs to be collected to fit a better equation for calculating the scour depth. The graphs are also provided to determine the minimum cover for the buried gas pipelines for the various sample median of soil and flood flow along with the maximum flood forces for the elevated gas pipelines. These graphs can be utilized to analyze the impact of the flood on gas pipelines.
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Lifelines 2022
Pages: 111 - 120
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Published online: Nov 16, 2022
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