Diagnosis of Water Distribution Systems through Transient Tests: The Pilot Study of Milan
Publication: Journal of Water Resources Planning and Management
Volume 148, Issue 6
Abstract
This paper presents the results of a pilot study funded by Metropolitana Milanese to investigate the use of transient tests for the diagnosis of the water distribution network of Milan (Italy). The peculiar aspects of the application of transient-based techniques to a complex system in an urban environment are discussed. Synchronous pressure signals acquired at 2,048 and 1,000 Hz at different measurement sections are shown and analyzed by auto- and cross-correlation, and wavelet transform. The effects of the shape of the pressure wave introduced in the system by the manoeuvre of a valve and the effects of repetition of the same manoeuvre on the reliability of the results are discussed. The main practical lessons learned about the use of hydrants, the topological and effective distances of measurement sections, the need for the introduction of pressure waves of given shapes, the information carried by the pressure signals for the diagnosis, and the use of simplified wavelet analysis are also presented and discussed.
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Data Availability Statement
Some data, i.e., the shown pressure signals, that support the findings of this study are available from the corresponding author upon reasonable request.
Acknowledgments
This research was funded by Metropolitana Milanese società per azioni under the research project “Application of innovative techniques to the condition assessment and diagnosis of water distribution system.” The GPS devices used for data synchronization were developed by Enrico Guadagni. The authors gratefully acknowledge the enthusiastic help of Chiara Adriani, Daniele Belli, Rocco Giannotta, Elisa Morbidelli, and Fabrizio Provvisiero for the field tests.
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© 2022 American Society of Civil Engineers.
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Received: Mar 31, 2021
Accepted: Feb 18, 2022
Published online: Apr 5, 2022
Published in print: Jun 1, 2022
Discussion open until: Sep 5, 2022
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Cited by
- Marco Ferrante, The Use of Hydrants for Transient Test-Based Diagnosis of the Water Distribution Systems of Milan, Italy, Journal of Pipeline Systems Engineering and Practice, 10.1061/(ASCE)PS.1949-1204.0000655, 13, 3, (2022).