This work proposes a methodology to estimate positions of leaks in pipelines with multiple elevation profiles and branch junctions in which only data of pressure and flow at the extremes of the pipeline and the branch junctions are assumed known. The key of the proposition is the error of the position at the branch junction in the presence of leaks. Specifically, the sign of the error determines if the leak is located downstream or upstream from the branch junction. This information then allows us to obtain static equations which characterize the leak position. To simplify the leak position expression, the piezometric variable instead of the pressure head is used for its derivation. Simulation results and real industrial data tests acquired from a liquefied petroleum gas (LPG) pipeline of 60 km with five elevation profiles and one branch junction with known extraction flow and position show the potentiality of the suggested method.
Leak Estimation Method for Complex Pipelines With Branch Junctions
Contributed by the Pressure Vessel and Piping Division of ASME for publication in the JOURNAL OF PRESSURE VESSEL TECHNOLOGY. Manuscript received July 2, 2013; final manuscript received July 29, 2016; published online September 28, 2016. Editor: Young W. Kwon.
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González, O., Verde, C., and Torres, L. (September 28, 2016). "Leak Estimation Method for Complex Pipelines With Branch Junctions." ASME. J. Pressure Vessel Technol. April 2017; 139(2): 021701. https://doi.org/10.1115/1.4034403
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