Accuracy and Uncertainty of Gradient Based Leak Localization Procedure for Liquid Transmission Pipelines

Abstract

This paper describes issues of leakage localization in liquid transmission pipelines. It focuses on the standard leak localization procedure, which is based on the calculation of pressure gradients using pressure measurements captured along a pipeline. The procedure was verified in terms of an accuracy and uncertainty assessment of the resultant coordinate of a leak spot. An important aim of the verification was to assess the effectiveness of the procedure in the case of localization of low intensity leakages with a level of 0.25–2.00% of the nominal flow rate. An uncertainty assessment was carried out according to the GUM convention. The assessment was based on the metrological characteristics of measuring devices and measurement data obtained from the laboratory model of the pipeline.

Pipeline Leakage Detection Based on Secondary Phase Transform Cross-Correlation

“…These methods have low inspection efficiency. In recent years, rapid progress in leakage detection methods have been made, including the mass balance method, flow model method, infrared thermography, optical fiber method and acoustic method [ 4 , 5 , 6 , 7 , 8 , 9 , 10 ]. These methods have their own advantages and disadvantages in terms of detection accuracy, efficiency, installation mode and cost.…”

Study of Parameter Configuration on an Embedded System Used for Acoustic Leak Localization in Metallic Pipelines

“…For this reason, extensive research has been conducted over the years, concerning the development of effective leak detection and localization methods [1][2][3][4]. These methods can rely on several physical phenomena from different areas, like optics [5][6][7][8][9], thermodynamics [10][11][12][13][14], acoustics [15][16][17][18][19][20][21][22][23][24][25][26], etc.…”