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Relevant bibliographies by topics / Water distribution networks maintenance

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Academic literature on the topic 'Water distribution networks maintenance'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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Journal articles on the topic "Water distribution networks maintenance"

1

Christodoulou, S., C. Charalambous, and A. Adamou. "Rehabilitation and maintenance of water distribution network assets." Water Supply 8, no. 2 (July 1, 2008): 231–37. http://dx.doi.org/10.2166/ws.2008.066.

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In light of the increasing and pressing need to efficiently manage scarce water resources, there has been renewed interest by water distribution network owners to develop and implement water management strategies and tools that would assist in the integrated and automated management of those networks. Such asset management strategies should assist the network owners to evaluate the condition of the water distribution network, assess historical incident data (leakage or breakage) and risk of failure, visualise areas of high risk, propose “repair or replace” strategies and prioritise the work based on the inherent risk and cost of action. The methodology and support system outlined in this paper can form an integral part of a leakage management strategy and provide a useful decision-making tool. The work presented outlines an integrated methodology and a decision support system for arriving at such “repair-or-replace” decisions, as part of a long-term pipeline asset management program that could be undertaken by a water utility to improve on the reliability of the water distribution networks.

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Trojan, Flavio, and Danielle Costa Morais. "Using ELECTRE TRI to support maintenance of water distribution networks." Pesquisa Operacional 32, no. 2 (June 21, 2012): 423–42. http://dx.doi.org/10.1590/s0101-74382012005000013.

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3

Luong, Huynh T., and Nagen N. Nagarur. "Optimal Maintenance Policy and Fund Allocation in Water Distribution Networks." Journal of Water Resources Planning and Management 131, no. 4 (July 2005): 299–306. http://dx.doi.org/10.1061/(asce)0733-9496(2005)131:4(299).

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Huzsvár, Tamás, Richárd Wéber, and Csaba János Hős. "Analysis of the Segment Graph of Water Distribution Networks." Periodica Polytechnica Mechanical Engineering 63, no. 4 (June 28, 2019): 295–300. http://dx.doi.org/10.3311/ppme.13739.

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One of the basic infrastructures of every settlement is the water distribution system, which provides clean and potable water for both private houses, industrial consumers and institution establishments. The operational robustness and vulnerabilities of these networks is an essential issue, both for the quality of life and for the preservation of the environment. Even with frequent and careful maintenance, unintentional pipe bursts might occur, and during the reparation time, the damaged section must be isolated hydraulically from the main body of the water distribution network. Due to the size and complexity of these networks, it might not be trivial how to isolate the burst section, especially if one wishes to minimize the impact on the overall system. This paper presents an algorithmic method that is capable of creating isolation plans for real-life networks in a computationally efficient way, based on the graph properties of the network. Besides this segmentation plan, the topological behavior of the structural graph properties was analyzed with the help of the complex network theory to create a method for the quantitative topology based categorization of the water distribution networks.

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Zarghami, Seyed Ashkan, and Indra Gunawan. "A domain-specific measure of centrality for water distribution networks." Engineering, Construction and Architectural Management 27, no. 2 (July 26, 2019): 341–55. http://dx.doi.org/10.1108/ecam-03-2019-0176.

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Purpose In recent years, centrality measures have been extensively used to analyze real-world complex networks. Water distribution networks (WDNs), as a good example of complex networks, exhibit properties not shared by other networks. This raises concerns about the effectiveness of applying the classical centrality measures to these networks. The purpose of this paper is to generate a new centrality measure in order to stick more closely to WDNs features. Design/methodology/approach This work refines the traditional betweenness centrality by adding a hydraulic-based weighting factor in order to improve its fit with the WDNs features. Rather than an exclusive focus on the network topology, as does the betweenness centrality, the new centrality measure reflects the importance of each node by taking into account its topological location, its demand value and the demand distribution of other nodes in the network. Findings Comparative analysis proves that the new centrality measure yields information that cannot be captured by closeness, betweenness and eigenvector centrality and is more accurate at ranking the importance of the nodes in WDNs. Practical implications The following practical implications emerge from the centrality analysis proposed in this work. First, the maintenance strategy driven by the new centrality analysis enables practitioners to prioritize the components in the network based on the priority ranking attributed to each node. This allows for least cost decisions to be made for implementing the preventive maintenance strategies. Second, the output of the centrality analysis proposed herein assists water utilities in identifying the effects of components failure on the network performance, which in turn can support the design and deployment of an effective risk management strategy. Originality/value The new centrality measure, proposed herein, is distinct from the conventional centrality measures. In contrast to the classical centrality metrics in which the importance of components is assessed based on a pure topological viewpoint, the proposed centrality measure integrates both topological and hydraulic attributes of WDNs and therefore is more accurate at ranking the importance of the nodes.

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Phan, Hieu Chi, Ashutosh Sutra Dhar, Premkumar Thodi, and Rehan Sadiq. "Probability of network disconnection of water distribution system for maintenance prioritization." Journal of Water Supply: Research and Technology-Aqua 67, no. 3 (March 7, 2018): 252–69. http://dx.doi.org/10.2166/aqua.2018.097.

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AbstractUnexpected pipe breaks in municipal water distribution systems may cause isolation of parts of the network or reduction of redundancy, leading to reduced system reliability. While a network with less redundancy implies less tolerance to further breaks, the isolation of nodes explicitly indicates unavailability of the system to service the nodes. This paper presents a method of measuring these topological changes using algebraic connectivity (AC). AC is a parameter that can be used to assess robustness and redundancy of a network. The changes in AC associated with pipe breaks are compared with the AC of intact networks to assess whether the removal of the pipe causes reduction of redundancy or isolation in the network. An AC of 1.5625 × 10−5 is calculated for an intake of a medium-sized water distribution network (WDN). The fluctuation in AC is used to assess the criticality of each pipe segment to the overall structure of the network. This study also evaluates the failure probability of the WDN, assuming that the network failure probability is equivalent to the probability of isolation of parts of the system due to pipe breaks. The breaks leading to the failure are identified using the method of the minimum cut-sets.

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Trung Luong, Huynh, and Okitsugu Fujiwara. "Fund allocation model for pipe repair maintenance in water distribution networks." European Journal of Operational Research 136, no. 2 (January 2002): 403–21. http://dx.doi.org/10.1016/s0377-2217(01)00047-9.

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Wang, Honggang, and Xin Chen. "Optimization of Maintenance Planning for Water Distribution Networks under Random Failures." Journal of Water Resources Planning and Management 142, no. 2 (February 2016): 04015063. http://dx.doi.org/10.1061/(asce)wr.1943-5452.0000567.

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Barros Filho, Emânuel Guerra, Laís Régis Salvino, Saulo de Tarso Marques Bezerra, Moisés Menezes Salvino, and Heber Pimentel Gomes. "Intelligent system for control of water distribution networks." Water Supply 18, no. 4 (September 26, 2017): 1270–81. http://dx.doi.org/10.2166/ws.2017.188.

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Abstract The objective of this research study was the development of an intelligent system based on artificial neural networks for water distribution networks that operate with parallel pumps. The purpose of the system is to automate the process and to define the operating state of the electric motors (on, off or with partial rotation speed). The intelligent system developed is generic, which allows the application of its control structure in similar processes, and it was applied in an experimental setup that simulates a real water supply system. The performance of the network was tested experimentally under different operating conditions, including in the presence of disturbances. The settling time was, in all experiments, less than 30 seconds, the tests did not show overshoot and the maximum error was 2.9%. Results showed excellent performance in terms of pressure regulation, and it is hoped that the controller can be successfully implemented in real water distribution systems, in order to reduce water and electricity consumption, decrease maintenance costs and increase the reliability of operating procedures.

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Zarghami, Seyed Ashkan, Indra Gunawan, and Frank Schultmann. "Entropy of centrality values for topological vulnerability analysis of water distribution networks." Built Environment Project and Asset Management 9, no. 3 (July 15, 2019): 412–25. http://dx.doi.org/10.1108/bepam-02-2019-0014.

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Purpose The increased complexity of water distribution networks (WDNs) emphasizes the importance of studying the relationship between topology and vulnerability of these networks. However, the few existing studies on this subject measure the vulnerability at a specific location and ignore to quantify the vulnerability as a whole. The purpose of this paper is to fill this gap by extending the topological vulnerability analysis further to the global level. Design/methodology/approach This paper introduces a two-step procedure. In the first step, this work evaluates the degree of influence of a node by employing graph theory quantities. In the second step, information entropy is used as a tool to quantify the global vulnerability of WDNs. Findings The vulnerability analysis results showed that a network with uniformly distributed centrality values exhibits a lower drop in performance in the case of partial failure of its components and therefore is less vulnerable. In other words, the failure of a highly central node leads to a significant loss of performance in the network. Practical implications The vulnerability analysis method, developed in this work, provides a decision support tool to implement a cost-effective maintenance strategy, which relies on identifying and prioritizing the vulnerabilities, thereby reducing expenditures on maintenance activities. Originality/value By situating the research in the entropy theory context, for the first time, this paper demonstrates how heterogeneity and homogeneity of centrality values measured by the information entropy can be interpreted in terms of the network vulnerability.

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Dissertations / Theses on the topic "Water distribution networks maintenance"

1

Smith, Ernest Price. "An optimal replacement-design model for a reliable water distribution network system." Diss., Virginia Tech, 1994. http://hdl.handle.net/10919/37455.

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FONTANA, Marcele Elisa. "Modelo de setorização para manobra em rede de distribuição de água baseado nas características das unidades consumidoras." Universidade Federal de Pernambuco, 2012. https://repositorio.ufpe.br/handle/123456789/18962.

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Submitted by Caroline Falcao (caroline.rfalcao@ufpe.br) on 2017-06-01T17:12:43Z No. of bitstreams: 2 license_rdf: 811 bytes, checksum: e39d27027a6cc9cb039ad269a5db8e34 (MD5) Marcele Elisa.pdf: 2410134 bytes, checksum: fb1c34a2e156d50ef7918acf93596973 (MD5)
Made available in DSpace on 2017-06-01T17:12:43Z (GMT). No. of bitstreams: 2 license_rdf: 811 bytes, checksum: e39d27027a6cc9cb039ad269a5db8e34 (MD5) Marcele Elisa.pdf: 2410134 bytes, checksum: fb1c34a2e156d50ef7918acf93596973 (MD5) Previous issue date: 2012-06-13
Devido ao envelhecimento e depreciação dos componentes de uma rede de distribuição de água é comum ocorrem vazamentos e rupturas na rede, ocasionando perdas e podendo acarretar a contaminação da água e descontinuidade no seu fornecimento pela interrupção do abastecimento de água durante a reparação da infraestrutura, bem como a redução da água disponível no sistema, gerando a insatisfação dos seus usuários. Nestes casos, a setorização da rede torna mais fácil qualquer atividade de manutenção, além de atingir um menor número de unidades de consumidoras pela interrupção do abastecimento. Porém, além do elevado custo da alocação de válvulas de fechamento, as Normas Brasileiras sobre setorização das redes dizem respeito apenas a questões técnicas que devem ser obedecidas pelos setores de manobra. Portanto, um modelo de setorização de manobra que leva em consideração as características das unidades consumidoras é proposto. Com ele pretende-se uma setorização que respeite as restrições previstas por lei, busque a maximização dos benefícios gerados pela setorização às unidades consumidoras e a minimização do número de válvulas de fechamento necessárias, ou seja, dos custos. Para medir o impacto da falta de água é gerado um índice de priorização que agrega as características das unidades consumidoras por meio de um método de agregação multicritério, o SMARTER. As simulações realizadas mostram que apenas a alocação inicial das válvulas pela NBR 12218/94 não garante a maximização dos benefícios gerados pela setorização da rede aos usuários. Neste caso, com o modelo proposto pode-se encontrar soluções melhores.
Due to aging and depreciation of the water distribution network components, leaks and ruptures are common on the water network. These cause the water loss, sometimes the water contamination and the discontinuity in water supply, due the supply interruption during the infrastructure repair, as well as reduction of available water in the system, causing the users' dissatisfaction. In these cases, network segmentation makes any maintenance activity easy and this achieves a smaller number of consuming units by water supply interruption. However, besides the high valves allocation cost, the Brazilian norms about network segmentation relate only technical issues that must be followed. Therefore, a network segmentation model, which takes into account the characteristics of consumer units, is proposed. It aims a network segmentation which complied the restrictions provided by law, it seeks the maximum benefit to consumer units, generated by the segmentation, and it seeks minimum number of valves required, i.e., the costs. To measure the impact on water lack is generated a priority index which adds the characteristics of consuming units via a multicriteria aggregation method, the SMARTER. The simulations realized showed that only the initial valves allocation, by the NBR 12218/94, does not guarantee the maximization of the benefits generated by the network segmentation for users. In this case, with the proposed model, better solutions can be found.

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Ar, Kerem. "Calibration Of Water Distribution Networks." Master's thesis, METU, 2012. http://etd.lib.metu.edu.tr/upload/12613934/index.pdf.

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Water distribution network models are used for different purposes. In this study, a model, used for daily operational issues is concerned. Models results should be consistent with actual conditions for sound decisions during operational studies. Adjusting model parameters according to site measurements in order to fit the model to obtain realistic results is known as calibration. Researchers have carried out numerous studies on calibration and developed various methods. In this study, an actual network (N8.3 Pressure Zone, Ankara) has been calibrated by two classical methods developed by Walski (1983) and Bhave (1988). The network parameter calibrated in this study is Hazen-Williams roughness coefficient, C-factor, and other parameters have been lumped in the C-factor. Results of the analysis showed that, C-factors have been found in a wide range.

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Sendil, Halil. "Operation Of Water Distribution Networks." Master's thesis, METU, 2013. http://etd.lib.metu.edu.tr/upload/12615484/index.pdf.

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With continuously increasing urbanization, consumer demands and expansion of water supply systems, determination of efficient pump schedules became a more difficult task. Pumping energy costs constitute a significant part of the operational cost of the water distribution networks. This study aims to provide an effective daily pump schedule by minimizing the energy costs for constant and also for multi tariff of electricity (3 Kademeli Elektrik Tarifesi) in water distribution network. A case study has been performed in an area covering N8.3 and N7 pressure zones which are parts of Ankara water distribution network. Both pressure zones consists of 3 multiple pumps in pump station and one tank having 5000 m3 storage volume each. By using genetic algorithm based software (WaterCAD Darwin Scheduler) least-cost pump scheduling and operation policy for each pump station has been determined while satisfying target hydraulic performance requirements such as minimum and maximum service pressures, final water level of storage tank and maximum velocity in pipeline. 32 different alternative scenarios have been created which include multi tariff energy prices, constant tariff energy price, insulated system condition, uninsulated system condition and different pump combinations. The existing base scenario and alternative scenarios which were prepared by using optimal pump schedules have been compared and the achievements of optimizing pump operation have been analyzed. At the end of the study, a satisfying result has been observed that by using determined optimal pump schedule, minimum % 14 of total energy cost can be saved in existing water supply system.

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Memarian, Neda. "Resilience of Water Distribution Networks." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2020.

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Resilience is widely interpreted as the capacity of a system to resist (preparation phase), absorb and withstand (responding phase), and rapidly recover from (restoration phase) exceptional conditions. During this study, a mixed variety of calculations were assessed in order to find the best solution for determination of resilience and reliability of a simple network. Then, Todini’s formula and failure index was applied to estimate reliability of system in different scenarios as constant demands in period of 24 hours, constant demands in period of 72 hours when tank will be empty (failure of tank), variable demands in period of 24 hours. At first hydraulic simulation of those scenarios was done by EPANET and validated by MATLAB-TOOLKIT. Then, Resilience index (RI), Failure Index (FI) and reliability (R) of system were measured. Finally, an optimization procedure was done to make a water distribution network with highest resilience and lowest failure probability. All these procedures have been applied on a real network as WDS of Modena. It concluded that this method can be used for every water system without considering the type of failure. As a result, first scenario has a constant decreased and increased trend of RI and FI respectively because of diminishing of water level in tank. During second scenario, there is significant change after the tank will be empty (or it is broke). Third scenario is more like a real network with variable demand during a day. It was concluded that there is a minimum resilience parameter during day when a peak time of water demand expected. It can be justified that the reservoir and pump system had to sustain more pressure to satisfy the demands of junctions. Maximum resilience is related to night during a day with less demands and providing water by tank to other junctions. This modelling could be useful to optimize the dimensions and features of instruments to increase availability and reliability of system.

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Sert, Caglayan. "Booster Disinfection In Water Distribution Networks." Master's thesis, METU, 2009. http://etd.lib.metu.edu.tr/upload/2/12610755/index.pdf.

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Disinfection of the municipal water systems is mostly achieved by means of chlorine addition at water treatment plants known as sources. Thus, there should be an adequate chlorine concentration at the source for an effective disinfection throughout the system by considering upper and lower limits of disinfectant. However, since the disinfectants are reactive and decays through the system, chlorine added at the source may not be enough to maintain desired disinfectant residuals which may lead to water quality problems in the water distribution system. Moreover, the disinfectants such as chlorine has also an effect to be carcinogen due to formation of disinfectant by-products. Thus, the system should balance the amount of disinfectant supplied while minimizing the health risk. In such a case, it is recommended that one or more booster disinfection stations can be located throughout the system. Such a method can provide more uniform distribution of the chlorine concentration while reducing the amount of the disinfectant used. In this thesis, optimum scheduling, and injection rates of the booster disinfection stations have been searched. The objective is to minimize the injected mass dosage rate subjected to the provision of adequate and more uniform residual concentration in the network. Determination of variable network hydraulics and chlorine concentrations is held out by EPANET network simulation sofware. A C++ code was developed to interface with EPANET by means of the EPANET Programmer'
s Toolkit for linear optimization of the disinfectant mass dosage rate applied to the network.

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Apaydin, Oncu. "Automated Calibration Of Water Distribution Networks." Master's thesis, METU, 2013. http://etd.lib.metu.edu.tr/upload/12615692/index.pdf.

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Water distribution network models are widely used for various purposes such as long-range planning, design, operation and water quality management. Before these models are used for a specific study, they should be calibrated by adjusting model parameters such as pipe roughness values and nodal demands so that models can yield compatible results with site observations (basically, pressure readings). Many methods have been developed to calibrate water distribution networks. In this study, Darwin Calibrator, a computer software that uses genetic algorithm, is used to calibrate N8.3 pressure zone model of Ankara water distribution network
in this case study the network is calibrated on the basis of roughness parameter, Hazen Williams coefficient for the sake of simplicity. It is understood that there are various parameters that contribute to the uncertainties in water distribution network modelling and the calibration process. Besides, computer software&rsquo
s are valuable tools to solve water distribution network problems and to calibrate network models in an accurate and fast way using automated calibration technique. Furthermore, there are many important aspects that should be considered during automated calibration such as pipe roughness grouping. In this study, influence of flow velocity on pipe roughness grouping is examined. Roughness coefficients of pipes have been estimated in the range of 70-140.

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Wright, Robert John. "Water distribution networks with dynamic topology." Thesis, Imperial College London, 2015. http://hdl.handle.net/10044/1/58191.

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The subdivision of water distribution networks (WDN) into zones, known as district metered areas (DMAs), is a popular approach to leakage management used by water companies. The DMAs are formed by permanently closing isolation valves at the boundaries of each zone (known as boundary valves). By forming discrete zones in the WDN, leakage estimates can be made at night when demand is low, which is used to prioritise pipe repair and replacement programmes. However, the permanent closure of boundary valves has also caused several disadvantages, including reduced network resilience to failure, sub-optimal pressure management, and water quality problems. This thesis introduces a novel approach to the operational management of WDNs, where DMAs are dynamically aggregated for improved network resilience, pressure management and water quality, and segregated for leakage monitoring at night. This is facilitated by replacing closed boundary valves with self-powered, remote control valves (dynamic boundary valves). The operation of a dynamic topology can therefore successfully eliminate the disadvantages of conventional DMAs, whilst retaining or improving their success in leakage monitoring. The investigation is carried out both analytically and experimentally on a real, operational UK network supplying approximately 8,000 properties in order to establish the benefits and challenges of the proposed approach. An extensive review of the current and emerging forms of pressure and DMA management from around the world is carried out. A case study using a real large scale network (3,148km of pipeline) demonstrates the current state of DMAs and their conformity to DMA design guidelines, and identifies how a dynamic DMA topology can improve network performance. A novel resilience index (the Reserve Capacity) is then used in the design of the dynamic DMA topology in the experimental programme. The analytical and experimental investigation has demonstrated a 27% reduction in leakage using a dynamic DMA topology over the most common approach to pressure management, and strong improvements in network resilience to failure where 1,400 customers maintained a supply during a real, major burst incident that would otherwise have been disconnected. In order to actuate near optimal control in the experimental programme, a novel optimisation algorithm based on sequential convex programming (SCP) is proposed for the control of valves. The SCP method takes advantage of computationally efficient solvers that facilitate prompt and reliable convergence. The algorithm also includes the development of a novel, convex valve model that can be integrated into efficient null space algorithms. In order to actuate the control, a novel approach for valve control in DMAs with dynamic topology is proposed, where time varying flow modulation curves are used based on the dynamic connectivity of DMAs.

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Lopez-Ibanez, Manuel. "Operational optimisation of water distribution networks." Thesis, Edinburgh Napier University, 2009. http://researchrepository.napier.ac.uk/Output/3044.

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Water distribution networks are a fundamental part of any modern city and their daily operations constitute a significant expenditure in terms of energy and maintenance costs. Careful scheduling of pump operations may lead to significant energy savings and prevent wear and tear. By means of computer simulation, an optimal schedule of pumps can be found by an optimisation algorithm. The subject of this thesis is the study of pump scheduling as an optimisation problem. New representations of pump schedules are investigated for restricting the number of potential schedules. Recombination and mutation operators are proposed, in order to use the new representations in evolutionary algorithms. These new representations are empirically compared to traditional representations using different network instances, one of them being a large and complex network from UK. By means of the new representations, the evolutionary algorithm developed during this thesis finds new best-known solutions for both networks. Pump scheduling as the multi-objective problem of minimising energy and maintenance costs in terms of Pareto optimality is also investigated in this thesis. Two alternative surrogate measures of maintenance cost are considered: the minimisation of the number of pump switches and the maximisation of the shortest idle time. A single run of the multi-objective evolutionary algorithm obtains pump schedules with lower electrical cost and lower number of pump switches than those found in the literature. Alternatively, schedules with very long idle times may be found with slightly higher electrical cost. Finally, ant colony optimisation is also adapted to the pump scheduling problem. Both Ant System and Max-Min Ant System are tested. Max-Min Ant System, in particular, outperforms all other algorithms in the large real-world network instance and obtains competitive results in the smallest test network. Computation time is further reduced by parallel simulation of pump schedules.

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Machell, John. "Water quality modelling in distribution networks." Thesis, University of Sheffield, 2004. http://etheses.whiterose.ac.uk/14849/.

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The thesis is a treatise of the quantity and quality aspects of potable water in distribution systems. The privatisation of the UK Water Industry in 1989 has seen the requirement for the Water Companies in England and Wales to be responsible for the delivery of good quality water that meets the demand of all consumers. In respect of the quantity of supply, there have been many previous studies that have examined the hydraulic performance of distribution systems and there are now many proprietary mathematical models that have been successfully used in this study. However, in respect of water quality the literature review has highlighted that the modelling approach is not so well advanced, as water quality is a function of many concepts, processes and parameters that include the source and age of water, the condition and deterioration of the assets in the system, the microbiological, chemical and physical processes and the network hydraulic performance, including pressure transients. These processes are highly interactive and complex. In an attempt to better understand these processes a programme of research has been completed that has involved a field evaluation of the performance of a live system, including the development of instrumentation to continually measure water quality, and the development of a mathematical model to describe the processes associated with the age of water and the propagation of conservative and non-conservative substances. An initial attempt has also been made to develop a micro-biological model and a sediment transport model. New original concepts developed by the author include age, biological and diagnostic models that may be used to identify the source of any incident (hydraulic or pollution) and the application of the model in near real time.

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Books on the topic "Water distribution networks maintenance"

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Bhave, Pramod R. Analysis of water distribution networks. Oxford, U.K: Alpha Science International, 2006.

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Powell, James Charlton. Modelling chlorine in water distribution networks. Birmingham: University of Birmingham, 1998.

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Bhave, Pramod R. Optimal design of water distribution networks. Pangbourne, England: Alpha Science International, Ltd., 2003.

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Bhave, Pramod R. Analysis of flow in water distribution networks. Lancaster [Pa.]: Technomic Pub. Co., 1991.

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M, Walski Thomas, ed. Water distribution systems: A troubleshooting manual. Chelsea, Mich: Lewis Publishers, 1990.

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Swamee, Prabhata K. Design of water supply pipe networks. Chichester, West Sussex, England: Wiley, 2007.

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Li, Tianyou, Qiujin Lin, and Genghuang Chen. Live-Line Operation and Maintenance of Power Distribution Networks. Singapore: John Wiley & Sons Singapore Pte. Ltd, 2017. http://dx.doi.org/10.1002/9781119055549.

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Kosov, Sergey. Intelligent pressure control and diagnosis of water distribution networks. Leicester: De Montfort University, 1998.

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Grigg, Neil S. Assessment and renewal of water distribution systems. Denver, CO: Awwa Research Foundation, 2004.

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Jones, Gerard F. Gravity-driven water flow in networks: Theory and design. Hoboken, N.J: Wiley, 2010.

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Book chapters on the topic "Water distribution networks maintenance"

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Ostfeld, Avi. "Water Distribution Networks." In Intelligent Monitoring, Control, and Security of Critical Infrastructure Systems, 101–24. Berlin, Heidelberg: Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-662-44160-2_4.

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Fontana, A., P. Postorino, M. A. Ricci, and A. K. Soper. "Radial Distribution Function of Heavy Water Steam." In Hydrogen Bond Networks, 69–72. Dordrecht: Springer Netherlands, 1994. http://dx.doi.org/10.1007/978-94-015-8332-9_6.

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PAPADIMITRAKIS, Y. A. "Automated Water Quality Monitoring In Water Distribution Networks." In Integrated Technologies for Environmental Monitoring and Information Production, 103–18. Dordrecht: Springer Netherlands, 2003. http://dx.doi.org/10.1007/978-94-010-0231-8_9.

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Villon, P., and A. Nace. "Crisis Management in Water Distribution Networks." In Damage Assessment and Reconstruction after War or Natural Disaster, 253–86. Dordrecht: Springer Netherlands, 2009. http://dx.doi.org/10.1007/978-90-481-2386-5_10.

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Mancilla García, María, and Örjan Bodin. "What Drives the Formation and Maintenance of Interest Coalitions in Water Governance Forums?" In Networks in Water Governance, 145–72. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-46769-2_6.

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Maul, A., A. H. El-Shaarawi, and J. C. Block. "Bacterial Distribution and Sampling Strategies for Drinking Water Networks." In Drinking Water Microbiology, 207–23. New York, NY: Springer New York, 1990. http://dx.doi.org/10.1007/978-1-4612-4464-6_10.

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Zhao, Yanchang, Bin Liang, Yang Wang, Shaobo Dang, Ronnie Taib, Fang Chen, Tin Hua, Dammika Vitanage, and Corinna Doolan. "Optimising Pump Scheduling for Water Distribution Networks." In AI 2019: Advances in Artificial Intelligence, 433–44. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-35288-2_35.

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Rahman, Rahimi A., Noor Suraya Romali, Siti Sarah Sufian, and Mazlan Abu Seman. "Affecting Factors in Rehabilitating Water Distribution Networks." In RILEM Bookseries, 179–87. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-76543-9_17.

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Shahra, Essa Q., Wenyan Wu, Shadi Basurra, and Stamatia Rizou. "Deep Learning for Water Quality Classification in Water Distribution Networks." In Proceedings of the International Neural Networks Society, 153–64. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-80568-5_13.

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Chaudhry, M. Hanif, and M. Rashidul Islam. "Water Quality Modeling in Pipe Networks." In Improving Efficiency and Reliability in Water Distribution Systems, 369–93. Dordrecht: Springer Netherlands, 1995. http://dx.doi.org/10.1007/978-94-017-1841-7_16.

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Conference papers on the topic "Water distribution networks maintenance"

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de Sousa Pereira, Leydiana, Jose Leao e Silva Filho, and Danielle Costa Morais. "Identifying maintenance priority criteria in water distribution networks using cognitive maps." In 2017 IEEE International Conference on Systems, Man and Cybernetics (SMC). IEEE, 2017. http://dx.doi.org/10.1109/smc.2017.8123199.

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Choi, Jong-In, and Hyun-Dong Lee. "Efficient maintenance planning of water distribution networks by using statistic methods." In Information Technology and Computer Science 2015. Science & Engineering Research Support soCiety, 2015. http://dx.doi.org/10.14257/astl.2015.99.29.

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Al-Ani, Dhafar, and Saeid Habibi. "A New Energy Optimization Strategy for Pumping Operation in Water Distribution Systems." In ASME 2012 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/imece2012-86463.

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As time goes on, more and more operating-modes based on changing demand profiles will be compiled to enrich the range of feasible solutions for a water distribution system. This implies the conservation of energy consumed by a water pumping station and improves the ability for energy optimization. Another important goal was improving safety, reliability, and maintenance cost. In this paper, three important goals were addressed: cost-effectives, safety, and self-sustainability operations of water distribution systems. In this work, the objective functions to optimize were total electrical energy cost, maintenance costs, and reservoir water level variation while preserving the service provided to water clients. To accomplish these goals, an effective Energy Optimization Strategy (EOS) that manages trade-off among operational cost, system safety, and reliability was proposed. Moreover, the EOS aims at improving the operating conditions (i.e., pumping schedule) of an existing network system (i.e., with given capacities of tanks) and without physical changes in the infrastructure of the distribution systems. The new strategy consisted of a new Parallel Multi-objective Particle Swarm optimization with Adaptive Search-space Boundaries (P-MOPSO-ASB) and a modified EPANET. This has several advantages: obtaining a Pareto-front with solutions that are quantitatively equally good and providing the decision maker with the opportunity to qualitatively compare the solutions before their implementation into practice. The multi-objective optimization approach developed in this paper follows modern applications that combine an optimization algorithm with a network simulation model by using full hydraulic simulations and distributed demand models. The proposed EOS was successfully applied to a rural water distribution system, namely Saskatoon West. The results showed that a potential for considerable cost reductions in total energy cost was achieved (approximately % 7.5). Furthermore, the safety and the reliability of the system are preserved by using the new optimal pump schedules.

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Pelegrini, M. A., N. Kagan, H. O. Henriques, M. R. Vaz, A. C. M. Araujo, A. C. C. Moreira, and A. F. Ferreira. "Optimization of maintenance actions in distribution networks." In 18th International Conference and Exhibition on Electricity Distribution (CIRED 2005). IEE, 2005. http://dx.doi.org/10.1049/cp:20051114.

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Wang, Zhong, Marios M. Polycarpou, Feng Shang, and James G. Uber. "Adaptive Control Formulation for Chlorine Residual Maintenance in Water Distribution Systems." In Joint Conference on Water Resource Engineering and Water Resources Planning and Management 2000. Reston, VA: American Society of Civil Engineers, 2000. http://dx.doi.org/10.1061/40517(2000)192.

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Puleo, Valeria, and Barbara Milici. "Water losses dynamic modelling in water distribution networks." In INTERNATIONAL CONFERENCE OF COMPUTATIONAL METHODS IN SCIENCES AND ENGINEERING 2015 (ICCMSE 2015). AIP Publishing LLC, 2015. http://dx.doi.org/10.1063/1.4938953.

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Obergunner, M., M. Zdrallek, A. Schweer, and E. Schick. "Optimal resource planning for maintenance of distribution networks." In 18th International Conference and Exhibition on Electricity Distribution (CIRED 2005). IEE, 2005. http://dx.doi.org/10.1049/cp:20051115.

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Plemper, B., and M. Redman. "Autonomous pressure control in water distribution networks." In URBAN WATER 2014. Southampton, UK: WIT Press, 2014. http://dx.doi.org/10.2495/uw140101.

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Kumar, Gaurav, and B. W. Karney. "Electricity Usage in Water Distribution Networks." In 2007 IEEE Canada Electrical Power Conference (EPC 2007). IEEE, 2007. http://dx.doi.org/10.1109/epc.2007.4520313.

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Abdel-Mottaleb, Noha, and Qiong Zhang. "Logical Architecture of Water Distribution Networks." In World Environmental and Water Resources Congress 2019. Reston, VA: American Society of Civil Engineers, 2019. http://dx.doi.org/10.1061/9780784482353.048.

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Reports on the topic "Water distribution networks maintenance"

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O'Hern, Timothy, Glenn Hammond, Leslie Orear, Bart van Bloemen Waanders, Paul Molina, and Ross Johnson. Physical Modeling of Scaled Water Distribution System Networks. Office of Scientific and Technical Information (OSTI), October 2005. http://dx.doi.org/10.2172/1143374.

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Zimmerman, Adam, Timothy John O'Hern, Leslie Jr Orear, Karen C. Kajder, Stephen Walter Webb, Malynda A. Cappelle, Siri Sahib Khalsa, et al. Joint physical and numerical modeling of water distribution networks. Office of Scientific and Technical Information (OSTI), January 2009. http://dx.doi.org/10.2172/961658.

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Byer, David E. Utilizing Routine Water Quality Instruments and Artificial Neural Networks for Monitoring Distribution System Security. Fort Belvoir, VA: Defense Technical Information Center, May 2003. http://dx.doi.org/10.21236/ada414222.

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DeAnna, Dixon, and Hodo Wayne. Finite element analysis of quoin block deterioration and load transfer mechanisms in miter gates : pintle and pintle connections. Engineer Research and Development Center (U.S.), June 2021. http://dx.doi.org/10.21079/11681/40842.

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The U.S. Army Corps of Engineers (USACE) currently operates and maintains approximately 193 commercially active lock sites with 239 locks and dams spanning nearly 12,000 miles. These networks of water channels are used to transport 600 million tons of domestic cargo, generating $405 billion in revenue annually. Nearly 60% of these structures in operation are over 50 years old and have reached design life. A failure of the miter gates could result in a major negative impact on the economy and on the ability to maintain flood control. Administrators need recommendations to better prioritize maintenance and repair of the USACE miter gates. This work investigated the influence of miter gate’s quoin block degradation on load transfer to the pintle and/or pintle connections. Results of finite element analysis are reported for the quoin block degradation simulated levels of 0%, 25%, 50%, and 75%. The parametric study shows the overstressed regions are the pintle neck and bolt-hole regions. To improve pintle designs so they may better mitigate detrimental environmental based deterioration effects, this work recommends (1) increasing the thickness of the bolt-hole connection region and (2) adding ribbing reinforcement around the neck area of the pintle.

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