The role of leaks and breaks in water networks: technical and economical solutions

Kanakoudis, Vasilis; Tolikas, D.

doi:10.2166/aqua.2001.0025

Cited by 62 publications

(38 citation statements)

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“…e main indicator for failure analysis in terms of the needs of an evaluated technical circumstance is the failure rate expressed as a number of failures related to the pipe length and unit of time (usually the number of failures per km per year) and the dynamics of failures. is study suggests the number of leaks as the main parameter [35,36]. (c) Water losses.…”

Section: Previous Research Of Parameter Classification In Watermentioning

confidence: 99%

A Parameter Classification System for Nonrevenue Water Management in Water Distribution Networks

Jang

2018

Advances in Civil Engineering

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Nonrevenue water (NRW) in a water distribution network is the water lost from unbilled authorized consumption, apparent losses, and real losses compared to the total system input volume. Nonrevenue water is an important parameter for prioritizing water distribution network improvement intervention planning, and it is necessary to identify the affecting parameters. A factor classification system has been developed based on the factors suggested by major institutions and researchers to propose an effective NRW classification system in a water distribution network. e factor classifications used include physical, operational, and socioeconomic factors that could affect NRW. Appropriate standards are required when classifying water main parameters. In this study, three criteria were proposed to create independent factors. e first relates to the properties of the parameter. One determines whether the parameters related to the water network are more suitable for physical, operational, or socioeconomic factors and classifies them into one of these three parameters. Second, one considers data availability and data characteristics taking into account the scope of the coverage area. ird, it must be possible to quantify selected parameter data. Whether the collected data are numerically valid and whether it can be used as a standard for assessment or comparison between regions must be examined. e quantification portion of the qualitative data in managing NRW is important and needs to be used in accordance with reasonable standards. In this study, more factors can be used depending on those selected, and it was found that NRW prediction that reflects regional characteristics is possible.

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Section: Previous Research Of Parameter Classification In Watermentioning

confidence: 99%

A Parameter Classification System for Nonrevenue Water Management in Water Distribution Networks

Jang

2018

Advances in Civil Engineering

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“…Matlab 2 SAC format is a binary Mat-file containing a defined data structure. 3 Django is a free open source web framework. Its primary goal is to facilitate the creation of complex, database-driven websites.…”

Section: Validation and Reconstruction Matlab Toolmentioning

confidence: 99%

A methodology and a software tool for sensor data validation/reconstruction: Application to the Catalonia regional water network

Escofet

García

Quevedo

et al. 2016

Control Engineering Practice

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In this paper, a sensor data validation/reconstruction methodology applicable to water networks and its implementation by means of a software tool, are presented. The aim is to guarantee that the sensor data are reliable and complete in case that sensor faults occur. The availability of such dataset is of paramount importance in order to successfully use the sensor data for further tasks e.g. water billing, network efficiency assessment, leak localisation and real-time operational control. The methodology presented here is based on a sequence of tests and on the combined use of spatial models (SM) and time series models (TSM) applied to the sensors used for real-time monitoring and control of the water network. Spatial models take advantage of the physical relations between different system variables (e.g. flow and level sensors in hydraulic systems) while time series models take advantage of the temporal redundancy of the measured variables (here by means of a Holt-Winters (HW) time series model). First, the data validation approach, based on several tests of different complexity, is described to detect potential invalid or missing data. Then, the reconstruction process is based on a set of spatial and time series models used to reconstruct the missing/invalid data with the model estimation providing the best fit. A software tool implementing the proposed data validation and reconstruction methodology is also described. Finally, results obtained applying the proposed methodology to a real case study based on the Catalonia regional water network is used to illustrate its performance.

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“…They are intended to compensate for the inconveniences created to people who are alien to the activity (Coase, 1960). In the urban water cycle, they result in economic compensation for the problems created by public works in the network and, in some cases, can be higher than repair costs (Kanakoudis and Tolikas 2001).…”

Section: Water Costsmentioning

confidence: 99%

Tap Water Costs and Service Sustainability, a Close Relationship

Cabrera

Pardo

Arregui

2012

Water Resour Manage

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Water is currently an essential and strategic resource for society and its importance will rise in the future due to the increasing number of threats. However, water management is not currently up to par taking into consideration this well acknowledged importance. Generally speaking, water use is not efficient and loss figures are often too high. The reasons behind this situation are complex and diverse, however, in principle, they can be divided into four categories: cultural, political, social and economic. Since the latter are of most importance, this paper focuses on water costs from source to tap.The economic analysis presented quantifies the costs of a sustainable urban water service in a structured way. The second part of the paper present a case study in which the economic losses linked to leakage are assessed as a function of how expenses are recovered. The cost of apparent losses could also be assessed in a similar way and will always be higher, since apparent losses (unlike real ones) are present throughout the whole water cycle, thus increasing the unit costs.

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The role of leaks and breaks in water networks: technical and economical solutions

Cited by 62 publications

References 0 publications

A Parameter Classification System for Nonrevenue Water Management in Water Distribution Networks

A Parameter Classification System for Nonrevenue Water Management in Water Distribution Networks

A methodology and a software tool for sensor data validation/reconstruction: Application to the Catalonia regional water network

Tap Water Costs and Service Sustainability, a Close Relationship

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