Study on failure rate analysis for water distribution pipelines

Arai, Yasuhiro; Koizumi, Akira; Inakazu, Toyono; Watanabe, Hiroyasu; Fujiwara, Masahiro

doi:10.2166/aqua.2010.108

Cited by 13 publications

(5 citation statements)

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“…For each of them, the structure of users was determined, i.e. type of building, standard of sanitary equipment, type and variability of industry, as well as hourly timetable was defi ned accordingly [Romano et al, 2014;Arai et al, 2010].…”

Section: Methodsmentioning

confidence: 99%

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Time-Spatial Analysis of the Functioning of the Water Distribution System in the Mathematical Modeling Process

Trębicka¹

2022

J. Ecol. Eng.

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This paper presents the process of the temporal and spatial functioning of the water distribution system in the mathematical modeling process. The research was carried out on the Bialystok water network model with particular emphasis on the efficiency and energy efficiency of the pumping units located on the analyzed water distribution system (SDW). The calculations and calibration of the model were performed using the ISYDYW software, with particular emphasis on time and spatial distribution. Particular situations were analyzed, especially when the system operated in exceptional conditions, which most often resulted in failure, leading to a shortage of water supply, and thus energy losses of the pumping units. The obtained results allowed demonstrating the auxiliary role of the simulation method in determining and predicting the effects on the existing emergency states. Possible scenarios were prepared for the observed changes, both in the entire network and at the selected points of the pump systems. Assuming the duration of the failure, its consequences were determined and presented in the form of the indicators discussed.

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Section: Methodsmentioning

confidence: 99%

“…ℎ 𝑝𝑝𝑝𝑝𝑝𝑝𝑝𝑝 𝑝𝑝𝑝𝑝 * 𝛥𝛥𝛥𝛥𝑇𝑇𝑇𝑇 𝑝𝑝𝑝𝑝 � Q pmi -average efficiency of the i-th pumping station [m 3 /s]; Q pni -efficiency of the i-th pumping station at the nominal pumping head [m3 /s].The potential of the Pump Station PressureHeight is described by the equation[Knapik, 2020]:…”

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confidence: 99%

Time-Spatial Analysis of the Functioning of the Water Distribution System in the Mathematical Modeling Process

Trębicka¹

2022

J. Ecol. Eng.

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“…[28]. Research carried out so far has taken into account the impact of pressure on the failure frequency of pipes [29], type, diameter, and material of pipes [30][31][32][33], the impact of climatic conditions [34]. Taking into account the appropriate number of variables allows you to properly determine the relationship between the causes and effects of failure.…”

Section: The Methods For Assessing the Water Supply Network Reliabilitymentioning

confidence: 99%

Method for Determining the Probability of a Lack of Water Supply to Consumers

Szpak

2020

Energies

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The water distribution subsystem is the most failing subsystem included in the water supply system. One of the main consequences of water supply failures is the lack of water supply to consumers, which is always very onerous. The paper presents a method of determining the conditional probability that a break in the supply of water to consumers of a certain duration will be caused by a specific type of failure. The result of the work was to identify water supply network failures that result in the longest water supply suspension time. The method was presented on a real water supply system. In order to reduce the incidence of long-term interruptions in water supply, water supply companies should mainly continue replacing gray cast iron pipes with thermoplastic materials. Actions taken to increase the safety of drinking water supply meet the current standards for the safety of drinking water, developed by the World Health Organization and the European Union.

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“…However, the quality of modelling in such cases can be lower since the forecasting process is based not on real data (from existing water utilities), but on artificial data. Still the majority of modelling approaches are based on operational information [1,7,22]. Therefore it seems worthwhile to compare the results of modelling with experimental data coming from two Polish water utilities in order to check whether the models proposed in the literature are valid for the water-pipe operating conditions in Poland.…”

Section: Methodsmentioning

confidence: 99%

Modelling of Failure Rate of Water-pipe Networks

Kutyłowska

2015

Period. Polytech. Civil Eng.

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The paper describes the reliability of selected water-pipe networks in Polish medium-sized cities X and Z. The IntroductionA water supply network is an essential part of the buried infrastructure. Water of proper quality should be delivered to consumers under the required pressure and in the required amount. In order to achieve these goals it is necessary to continuously monitor the technical condition of the water pipes. Proper maintenance and operation are critical for the reliability and safety of the water-pipe network. The control of the pressure inside the pipes is one of the measures leading to a decrease in the number of failures and in the unreliability of the whole system [4]. Another performance optimization measure is mathematical modelling and forecasting, which use typical models, artificial intelligence and some reliability indicators. Thanks to modelling one can relatively quickly assess the condition of water pipes [20]. According to many authors [3,15,17], the modelling of reliability indicators and technical condition and then using the modelling results by water utilities can lead to an increase in water supply network efficiency and in water quality. Also an improvement in the management of the system can be achieved in this way. Moreover, through modelling one can correctly estimate the costs of water pipe reconstruction [2,21].

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Study on failure rate analysis for water distribution pipelines

Cited by 13 publications

References 0 publications

Time-Spatial Analysis of the Functioning of the Water Distribution System in the Mathematical Modeling Process

Time-Spatial Analysis of the Functioning of the Water Distribution System in the Mathematical Modeling Process

Method for Determining the Probability of a Lack of Water Supply to Consumers

Modelling of Failure Rate of Water-pipe Networks

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