Leak Size,Detectability and Test Conditions in Pressurized Pipe Systems |
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Authors: | Marco Ferrante Bruno Brunone Silvia Meniconi Bryan W Karney Christian Massari |
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Affiliation: | 1. Dipartimento di Ingegneria Civile ed Ambientale, University of Perugia, Via G. Duranti 93, 06125, Perugia, Italy 2. Department of Civil Engineering, University of Toronto, Toronto, Canada 3. Research Institute for Geo-Hydrological Protection, National Research Council CNR, Via Madonna Alta, 126-06128, Perugia, Italy
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Abstract: | The relationships between leak geometry and detectability are explored with a distinction between steady- and unsteady-state based techniques. Various criteria to evaluate the size and detectability of a leak are first discussed. These criteria can be useful for the benchmarking and the comparison of different techniques. Since the test conditions play a crucial rule in leak detectability, the proposed criteria take this effect into account. Furthermore, they show that while in steady-state conditions increases in system pressure enhance leak detectability, in transient state, by contrast, higher pressures tend to decrease detectability. This effect is also confirmed by experimental tests carried out at the Water Engineering Laboratory of the University of Perugia. |
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