Determining physical and operational factors influencing pipeline leakage location pattern in water distribution networks using spatial poisson point process
Widyo Nugroho (a*), Nur Iriawan (b), Christiono Utomo (c)

a) Doctoral Student of Civil Engineering Department, Sepuluh November Institute of Technology, Surabaya 60111, East Java, Indonesia
*widyo.nugroho[at]gmail.com
b) Professor of Statistics Department, Sepuluh November Institute of Technology, Surabaya 60111, East Java, Indonesia
c) Associate Professor of Civil Engineering Department, Sepuluh November Institute of Technology, Surabaya 60111, East Java, Indonesia


Abstract

There are four pillars in leakage management strategy for water distribution networks, consist of pressure management, speed of recovery, active leakage control, and asset management. Leakage can be managed by applying the right combination of these factors in the right leakage management strategy. This study conducted in Malang City, East Java, Indonesia. The factors that influence physical water loss in the water distribution system are analyzed by focusing on the physical and operational parameters. The data in this study consist of spatial data and quantitative data. Poisson distribution in the spatial point process is chosen as the leakage point distribution approximation. From the analysis, it is found that the distribution pattern of pipeline leakage is included in the inhomogeneous Poisson process criteria, with two types of intensity area. Based on the results of parameter estimation, it is found that the high-intensity area is affected by speed of recovery, pipe diameter, pipe length ratio, supply discharge ratio, and pipe deterioration ratio but not affected by the energy demand ratio. While the low-intensity area is influenced by pipe diameter, pipe length ratio, supply discharge ratio, pipe deterioration ratio, and the energy demand ratio but not affected by the speed of recovery.

Keywords: pipeline leakage pattern, poisson point process, water distribution networks

Topic: Civil Engineering

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