Performance In Water Distribution
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Performance In Water Distribution
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Author : Sérgio Teixeira Coelho
language : en
Publisher: Taylor & Francis Group
Release Date : 1997
Performance In Water Distribution written by Sérgio Teixeira Coelho and has been published by Taylor & Francis Group this book supported file pdf, txt, epub, kindle and other format this book has been release on 1997 with Science categories.
Performance Indicators For Water Supply Services
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Author : Helena Alegre
language : en
Publisher: IWA Publishing
Release Date : 2006-06-30
Performance Indicators For Water Supply Services written by Helena Alegre and has been published by IWA Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006-06-30 with Science categories.
The IWA Performance Indicator System for water services is now recognized as a worldwide reference. Since it first appearance in 2000, the system has been widely quoted, adapted and used in a large number of projects both for internal performance assessment and metric benchmarking. Water professionals have benefited from a coherent and flexible system, with precise and detailed definitions that in many cases have become a standard. The system has proven to be adaptable and it has been used in very different contexts for diverse purposes. The Performance Indicators System can be used in any organization regardless of its size, nature (public, private, etc.) or degree of complexity and development. The second edition of Performance Indicators for Water Supply Services represents a further improvement of the original manual. It contains a reviewed and consolidated version of the indicators, resulting from the real needs of water companies worldwide that were expressed during the extensive field testing of the original system. The indicators now properly cover bulk distribution and the needs of developing countries, and all definitions have been thoroughly revised. The confidence grading scheme has been simplified and the procedure to assess the results- uncertainty has been significantly enhanced. In addition to the updated contents of the original edition, a large part of the manual is now devoted to the practical application of the system. Complete with simplified step-by-step implementation procedures and case studies, the manual provides guidelines on how to adapt the IWA concepts and indicators to specific contexts and objectives. The manual includes a new version of the software Sigma Lite incorporating all the new developments and an improved graphical user interface. This new edition of Performance Indicators for Water Supply Services will be an invaluable reference source for all those concerned with managing the performance of the water supply industry, including those in the water utilities as well as regulators, policy-makers and financial agencies.
Performance Indicators For Water Supply Services
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Author : Helena Alegre
language : en
Publisher: IWA Publishing
Release Date : 2016-09-15
Performance Indicators For Water Supply Services written by Helena Alegre and has been published by IWA Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-09-15 with Science categories.
The IWA Performance Indicator System for water services is now recognized as a worldwide reference. Since it first appearance in 2000, the system has been widely quoted, adapted and used in a large number of projects both for internal performance assessment and metric benchmarking. Water professionals have benefited from a coherent and flexible system, with precise and detailed definitions that in many cases have become a standard. The system has proven to be adaptable and it has been used in very different contexts for diverse purposes. The Performance Indicators System can be used in any organization regardless of its size, nature (public, private, etc.) or degree of complexity and development. The third edition of Performance Indicators for Water Supply Services represents a further improvement of the original manual. It contains a reviewed and consolidated version of the indicators, resulting from the real needs of water companies worldwide that were expressed during the extensive field testing of the original system. The indicators now properly cover bulk distribution and the needs of developing countries, and all definitions have been thoroughly revised. The confidence grading scheme has been simplified and the procedure to assess the results- uncertainty has been significantly enhanced. In addition to the updated contents of the original edition, a large part of the manual is now devoted to the practical application of the system. Complete with simplified step-by-step implementation procedures and case studies, the manual provides guidelines on how to adapt the IWA concepts and indicators to specific contexts and objectives. This new edition of Performance Indicators for Water Supply Services is an invaluable reference source for all those concerned with managing the performance of the water supply industry, including those in the water utilities as well as regulators, policy-makers and financial agencies.
Performance Assessment Of Water Distribution Systems
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Author : M. A. M. Mansoor
language : en
Publisher:
Release Date : 2007
Performance Assessment Of Water Distribution Systems written by M. A. M. Mansoor and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007 with categories.
Water distribution systems are often susceptible to failure events, mainly due to component malfunctions, increase in demand and pollution events. However, levels of service to the consumers cannot be compromised. Therefore, to understand the behaviour of distribution systems, performance assessment is important. In this thesis, problem of failure events in water distributions system is discussed and the causes of failure are described. Component failures are selected to simulate the extreme situations in the distribution systems. Random nature of the component failures are simulated by way of employing a Monte Carlo technique based on the failure probabilities of the components. The methodology was illustrated with an example application. Appropriateness of existing network analysis methods to simulate failure events is analysed and their shortcomings identified. To demonstrate the impact of component failures, they are simulated with the hydraulic network analysis model. The traditional demand driven network analysis approach is not sensitive to pressure variations in the system. Therefore, simulating failures with demand driven analysis methods produces inaccurate flows at the nodes. The pressure dependent demand analysis on the other hand, is capable of accommodating the flow redistributions in the water distribution network, caused by failure events. The pressure dependent functions used in the analysis are meant to predict the flows that are consumed by the secondary networks (tree network supplied from primary node). However, representing the secondary network behaviour by using only a few coefficients (as in the PDD functions) do not always results in correct predictions. An alternative method that is based on micro level models (secondary networks) is proposed. Micro level models try to simulate the exact network conditions, taking into account of the consumers piping arrangements. Applying micro level models to a large real network will be a tedious process, as the size of the network will increase by many folds. To avoid the difficulties in the micro level modeling, a method based on artificial neural networks (ANN) is introduced. The ANNs mimic the behaviour of secondary networks in the micro level model. Therefore, instead of physically attaching the secondary networks, ANNs are incorporated with the analysis. The ANN based network analysis model predicts the pressure dependent demand outflows at the nodes. The behaviour of water distribution system is evaluated using performance measures. Existing performance indicators are reviewed and their shortcomings identified. New measures are proposed that give better insights into the behaviour of the system and also the failure experience of the consumers. The improved performance assessment method is applied to a case study network and results were explained.
Distribution System Performance Evaluation
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Author : Arun K. Deb
language : en
Publisher: American Water Works Association
Release Date : 1995-01-01
Distribution System Performance Evaluation written by Arun K. Deb and has been published by American Water Works Association this book supported file pdf, txt, epub, kindle and other format this book has been release on 1995-01-01 with Technology & Engineering categories.
Indicators Of The Performance Of Irrigation Water Distribution Systems
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Author :
language : en
Publisher: IWMI
Release Date :
Indicators Of The Performance Of Irrigation Water Distribution Systems written by and has been published by IWMI this book supported file pdf, txt, epub, kindle and other format this book has been release on with categories.
Performance Indicators For Water Supply Services
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Author : Helena Alegre
language : en
Publisher:
Release Date : 2016
Performance Indicators For Water Supply Services written by Helena Alegre and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016 with Nature categories.
The IWA Performance Indicator System for water services is now recognized as a worldwide reference. Since it first appearance in 2000, the system has been widely quoted, adapted and used in a large number of projects both for internal performance assessment and metric benchmarking. Water professionals have benefited from a coherent and flexible system, with precise and detailed definitions that in many cases have become a standard. The system has proven to be adaptable and it has been used in very different contexts for diverse purposes. The Performance Indicators System can be used in any organization regardless of its size, nature (public, private, etc.) or degree of complexity and development. The third edition of Performance Indicators for Water Supply Services represents a further improvement of the original manual. It contains a reviewed and consolidated version of the indicators, resulting from the real needs of water companies worldwide that were expressed during the extensive field testing of the original system. The indicators now properly cover bulk distribution and the needs of developing countries, and all definitions have been thoroughly revised. The confidence grading scheme has been simplified and the procedure to assess the results- uncertainty has been significantly enhanced. In addition to the updated contents of the original edition, a large part of the manual is now devoted to the practical application of the system. Complete with simplified step-by-step implementation procedures and case studies, the manual provides guidelines on how to adapt the IWA concepts and indicators to specific contexts and objectives. This new edition of Performance Indicators for Water Supply Services is an invaluable reference source for all those concerned with managing the performance of the water supply industry, including those in the water utilities as well as regulators, policy-makers and financial agencies.
Water Distribution Rules And Water Distribution Performance
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Author : Jeffrey Daniel Brewer
language : en
Publisher: IWMI
Release Date : 1997
Water Distribution Rules And Water Distribution Performance written by Jeffrey Daniel Brewer and has been published by IWMI this book supported file pdf, txt, epub, kindle and other format this book has been release on 1997 with Irrigation categories.
Explores the relationship of water distribution rules to water distribution performance in the Tambraparani Irrigation System in India. Argues that if water distribution rules do not match the irrigation services desired by the users, the users subvert the rules to provide the water deliveries they require, with negative impacts on water distribution performance and equity, and the cost of irrigation.
Performance Assessment In Water Supply And Distribution
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Author : Sergio Cavalho de Matos Teixeira Coelho
language : en
Publisher:
Release Date : 1996
Performance Assessment In Water Supply And Distribution written by Sergio Cavalho de Matos Teixeira Coelho and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1996 with categories.
Performance Modeling And Simulation For Water Distribution And Wastewater Collection Networks
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Author : Amin Ganjidoost
language : en
Publisher:
Release Date : 2016
Performance Modeling And Simulation For Water Distribution And Wastewater Collection Networks written by Amin Ganjidoost and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016 with Sewerage categories.
Over the past decade many performance indicators have been developed for water and wastewater utilities. While existing performance indicators allow utilities to track performance over time and with respect to utility set objectives, they do not allow comparison of a utility's performance with respect to another utility. To overcome this deficiency in performance indicators, a series of water and wastewater benchmarking performance indicators are developed that are aggregated into 1) infrastructure, 2) socio-political, and 3) financial. These indicators are normalized and time-integrated to capture the cumulative adjustments made by the utility. A functional demonstration for validation is presented using the Rehan et al. (2013) system dynamics model for three Ontario water utilities with a pay-as-you-go financing strategy to benchmark, forecast and graphically compare each utility's performance over a 100-year benchmarking period. Results demonstrate that different water utilities can be benchmarked against each other using the benchmarking performance indicators. This will allow water utilities' management practices to be compared locally, regionally and nationally regardless of the utility size (small, medium or large) to identify opportunities for improvements and best practices. An implementation framework for water distribution and wastewater collection networks asset management strategy is then developed comprising of three decision-making layers: 1) “visions & values”, 2) “function”, and 3) “performance”. The asset management strategy framework is then implemented and validated through demonstration of functionality and value by using data from three utilities in Ontario, Canada. Results indicate that the three utilities studied achieve the strategic targets established in the visions & values layer over the benchmarking period (100 years). A causal loop diagram for integrated asset management of water distribution and wastewater collection networks is presented. The causal loop diagram lays out the connection points and identifies the interacting feedback loops that exist among the integrated system components. The causal loop diagram is then translated into a system dynamics model comprised of integrated infrastructure, finance and socio-political sectors. The model data requirements and specific tests and procedures to validate the integrated system dynamics model are presented. The integrated model is implemented for a case study of a medium-sized Canadian municipality. The result indicates that the financial capacity to pay for capital and operational expenditures increases due to the integration of the financial resources of water and wastewater utilities and thus improves the integrated levels of service. In practice, water utilities' stakeholders can use the benchmarking performance indicators and asset management models developed in this research to negotiate and enact meaningful strategic targets and policy levers that lead to the sustainable asset management of the water distribution and wastewater collection networks over the life cycle of assets.