Technical auditing of water supply systems – part 1: the complex methodology

2018 ◽  
Vol 18 (4) ◽  
pp. 1133-1140 ◽  
Author(s):  
Ladislav Tuhovčák ◽  
Tomáš Kučera ◽  
Tomáš Sucháček
Keyword(s):  
Water Supply ◽  
Technical Condition ◽  
Water Supply Systems ◽  
Energy Audit ◽  
Preliminary Assessment ◽  
Preliminary Identification ◽  
Detailed Evaluation ◽  
Water Mains ◽  
Supply Systems ◽  
Single Part

Abstract To ensure the sustainability and reliability of water supply infrastructure, a basic pre-condition must be applied related to its continual renewal. For renewal planning, there are a number of methods, techniques and software tools for decision-support, but in many cases most of them focus only on water mains. However, water supply systems consist of more various parts and structures than simply water pipes. Therefore, it is not appropriate to invest in renewal planning for a single part of the water supply infrastructure only. An effective and detailed evaluation of the technical condition requires the deployment of specialists and a reliable database, as well as considerable amounts of time, instrumentation and software. Therefore, it is preferable to first perform a rapid and efficient preliminary identification of problematic areas and elements of the entire water supply system. This paper presents the methodology and Technical and Energy Audit (TEA Water), as well as an effective preliminary assessment of the technical condition of water supply systems (WSSs). The paper presents the structure of proposed technical indicators, the method of their determination and evaluation, as well as including a presentation of case studies.

Comparative analysis of water–pipe network deterioration–case study

2016 ◽  
Vol 11 (1) ◽  
pp. 148-156 ◽  
Author(s):  
Małgorzata Kutyłowska ◽  
Maria Orłowska-Szostak
Keyword(s):  
Comparative Analysis ◽  
Water Supply ◽  
Weather Conditions ◽  
Technical Condition ◽  
Water Utilities ◽  
Water Supply Systems ◽  
Failure Rates ◽  
Supply Networks ◽  
Water Mains ◽  
Supply Systems

The paper presents a comparative analysis of water-supply network deterioration in three Polish cities. The comparison was made on the basis of operating data (from the period 2007 to 2012) received from water utilities. The comparison is necessary to determine whether and to what extent water utilities should improve the technical condition of their water-supply networks. On average in cities A, B and C, failure rates λ (fail km−1 a−1) of water mains, distribution pipes and house connections were 0.20, 0.24 and 0.53; 0.17, 0.32 and 0.50; and 0.01, 0.48 and 1.63, respectively. The failure rates of the main and distribution conduits were higher in winter than summer, due to the weather conditions and the pipes' shallow depth. Smaller diameter pipes were more vulnerable. One city is exposed to mining exploitation and most cracking observed on the main and distribution pipelines arose from this. As the literature and these investigations indicate, the technical condition of water supply systems in Poland is still improving and rates of deterioration decreasing.

scholarly journals PRELIMINARY TECHNICAL ASSESSMENT OF WATER DISTRIBUTION NETWORKS

2015 ◽  
Vol 1 (2) ◽  
pp. 129-134
Author(s):  
Ladislav Tuhovčák ◽  
Miloslav Tauš ◽  
Tomáš Sucháček
Keyword(s):  
Water Supply ◽  
Water Distribution ◽  
Distribution Networks ◽  
Technical Condition ◽  
Water Supply Systems ◽  
Software Application ◽  
Investment Projects ◽  
Starting Point ◽  
Water Mains ◽  
Supply Systems

The knowledge of the current technical condition of the operated system is in the interest of the owner or operator of public water supply systems. Such information is the starting point when making decisions on investment projects or planning water mains renewal. The submitted paper introduces the methodology of preliminary assessment of the technical condition of water supply systems and outputs of the software application TEA Water, which makes it possible to assess the technical condition of the specific elements of the water supply systems and clear displaying with the presentation of the assessment results for the entire considered water supply system.

scholarly journals Energy audit in water supply systems: a proposal of integrated approach towards energy efficiency

Water Policy ◽  
2020 ◽  
Vol 22 (6) ◽  
pp. 1126-1141
Author(s):  
Ana Paula Pereira da Silveira ◽  
Herlander Mata-Lima
Keyword(s):  
Energy Efficiency ◽  
Water Supply ◽  
Energy Management ◽  
Integrated Approach ◽  
Water Supply Systems ◽  
Energy Audit ◽  
Water Utility ◽  
Key Issues ◽  
User Friendly ◽  
Supply Systems

Abstract An integrated procedure has been designed to identify and rank the opportunity for energy efficiency in water supply systems (WSS). The main objective is to help WSS managers to identify key issues to be treated as nonconformity and develop a program for continual improvement of energy efficiency. The procedure was built in collaboration with practitioners and implemented in a company. One of the concerns during the development of the procedure was to provide companies with a fast and user-friendly tool. Complementarily, it also complies with International Organization for Standardization (ISO) and European Committee for Standardization (CEN) standards, and is of great relevance for any company of the sector of water utility. Recommendations for enhancing the energy management in WSS are also addressed in the audit procedure. The findings derived from the evaluation of the state-of-the-art and applications have led to the identification of key issues for energy saving. The success of energy management programs will be based on energy audit and on the top managements' engagement, workers' attitude and qualification, and the financial resources available.

scholarly journals Application of Artificial Neural Networks to the Technical Condition Assessment of Water Supply Systems

2017 ◽  
Vol 24 (1) ◽  
pp. 31-40 ◽  
Author(s):  
Kamil Kamiński ◽  
Władysław Kamiński ◽  
Tomasz Mizerski
Keyword(s):  
Water Supply ◽  
Distribution System ◽  
Water Distribution ◽  
Technical Condition ◽  
Water Supply Systems ◽  
Data Set ◽  
Technical Data ◽  
Artificial Neural ◽  
Artificial Neural Network Ann ◽  
Supply Systems

AbstractThe paper explains a method for discerning the parts of a water supply system in need of renovation. The results are based on technical data collected over the last twenty one years, concerning more than two hundred sections of both renovated and nonrenovated pipelines. In the study, an appropriately prepared data set was used for training an artificial neural network (ANN) in the form of a multilayer perceptron (MLP). Further comparison between the responses of the trained MLP and the decisions made by human experts showed satisfactory consistency, although 15% of the database records produced certain discrepancies. The presented method can help create an expert system capable of supporting failure-free operation of a water distribution system.

scholarly journals Joint energy and water management scheme for water supply systems in Romania

2019 ◽  
Vol 85 ◽  
pp. 06008 ◽  
Author(s):  
Aida Delcea ◽  
Ioan Bitir-Istrate ◽  
Roxana Pătraşcu ◽  
Cristian Gheorghiu
Keyword(s):  
Water Supply ◽  
Energy Management ◽  
Water Supply Systems ◽  
Energy Audit ◽  
Short Term ◽  
Water Losses ◽  
Management Scheme ◽  
Energy Consuming ◽  
Supply Systems

Keeping in mind the short-term and long-term aims of cost depletion and sustainable development respectively, a joint water and energy management scheme for water supply systems that leads to reduced energy losses is proposed. For water utilities, drinkable water's treatment and pumping and wastewater treatment are the main energy-consuming processes and a proportional part of this energy is wasted with non-revenue water. In Romania, these losses can reach critical levels so highlighting them becomes a crucial aspect in assessing the system's efficiency. This paper presents a scheme that combines energy audit and water balance techniques that can become a tool for both energy auditors and managers, by allowing the quantification of embedded energy of water losses. The methodology is adapted for the conditions in Romania, where data collection and processing is mainly done manually.

Идентификациякоррозииоцинкованныхтрубвсистемеводоснабжения

2019 ◽  
pp. 39-44
Author(s):  
A. Andrianov ◽  
V. Chukhin
Keyword(s):  
Water Supply ◽  
Technical Condition ◽  
Supply System ◽  
Hot Water ◽  
Galvanized Steel ◽  
Water Supply Systems ◽  
Steel Pipes ◽  
Industrial Buildings ◽  
Hot Water Supply ◽  
Supply Systems

Приведены данные исследования и применения нового способа идентификации коррозии систем внутреннего водопровода, изготовленных из стальных оцинкованных труб. Способ может быть использован для периодического мониторинга технического состояния систем холодного и горячего водоснабжения жилых, общественных и производственных зданий. Способ основан на определении в составе осадка на тестовом образце продуктов коррозии, в частности цинка и меди, входящих в состав металла трубопроводов и оборудования. Техническим результатом предлагаемого решения является возможность его применения непосредственно с начала эксплуатации системы водоснабжения, а также сокращение времени для идентификации коррозии трубопроводов и оборудования в ходе продолжительной эксплуатации.The data on the research and application of a new method for identifying corrosion of house water plumbing made of galvanized steel pipes are presented. The method can be used for regular monitoring of the technical condition of cold and hot water supply systems made of galvanized steel pipes in residential, public and industrial buildings. The method is based on determining corrosion products of pipelines and equipment, zinc and copper in particular, on a test biscuit. The technical result of the proposed solution is the possibility of its application directly from the start of the operation of the water supply system as well as reducing the time to identify the occurrence of corrosion of pipelines and equipment during longterm operation.

scholarly journals Robust optimization methodologies for water supply systems design

2012 ◽  
Vol 5 (1) ◽  
pp. 173-192 ◽  
Author(s):  
J. Marques ◽  
M. C. Cunha ◽  
J. Sousa ◽  
D. Savić
Keyword(s):  
Water Supply ◽  
Robust Optimization ◽  
Optimization Problems ◽  
Systems Design ◽  
Well Being ◽  
Operating Conditions ◽  
Water Supply Systems ◽  
Water Mains ◽  
Hydraulic Simulator ◽  
Supply Systems

Abstract. Water supply systems (WSSs) are vital infrastructures for the well-being of people today. To achieve good customer satisfaction the water supply service must always be able to meet people's needs, in terms of both quantity and quality. But unpredictable extreme conditions can cause severe damage to WSSs and lead to poorer levels of service or even to their failure. Operators dealing with a system's day-to-day operation know that events like burst water mains can compromise the functioning of all or part of a system. To increase a system's reliability, therefore, designs should take into account operating conditions other than normal ones. Recent methods based on robust optimization can be used to solve optimization problems which involve uncertainty and can find designs which are able to cope with a range of operating conditions. This paper presents a robust optimization model for the optimal design of water supply systems operating under different circumstances. The method presented here uses a hydraulic simulator linked to an optimizer based on a simulated annealing heuristic. The results show that robustness can be included in several ways for varying levels reliability and that it leads to more reliable designs for only small cost increases.

scholarly journals Robust optimization methodologies for water supply systems design

2012 ◽  
Vol 5 (1) ◽  
pp. 31-37 ◽  
Author(s):  
J. Marques ◽  
M. C. Cunha ◽  
J. Sousa ◽  
D. Savić
Keyword(s):  
Water Supply ◽  
Robust Optimization ◽  
Optimization Problems ◽  
Systems Design ◽  
Well Being ◽  
Operating Conditions ◽  
Water Supply Systems ◽  
Water Mains ◽  
Hydraulic Simulator ◽  
Supply Systems

Abstract. Water supply systems (WSSs) are vital infrastructures for the well-being of people today. To achieve good customer satisfaction the water supply service must always be able to meet people's needs, in terms of both quantity and quality. But unpredictable extreme conditions can cause severe damage to WSSs and lead to poorer levels of service or even to their failure. Operators dealing with a system's day-to-day operation know that events like burst water mains can compromise the functioning of all or part of a system. To increase a system's reliability, therefore, designs should take into account operating conditions other than normal ones. Recent approaches based on robust optimization can be used to solve optimization problems which involve uncertainty and can find designs which are able to cope with a range of operating conditions. This paper presents a robust optimization model for the optimal design of water supply systems operating under different circumstances. The model presented here uses a hydraulic simulator linked to an optimizer based on a simulated annealing heuristic. The results show that robustness can be included in several ways for varying levels reliability and that it leads to more reliable designs for only small cost increases.

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