Analysis of risk of failure in water main pipe network and of delivering poor quality water

Boryczko, Krzysztof; Tchórzewska-Cieślak, B.

doi:10.37190/epe140407

Cited by 13 publications

(4 citation statements)

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“…where: P-point weight assigned to the probability of a water supply being lacking; C-point weight associated with the negative effects of a failure of water supply; S-point weight connected with the protection of a CWSS against lack of supply. As parameters P and C have already been described in publications relating to lack of water supply risk, they have been omitted from this article [65]. These are usually determined on a 5-point scale, with descriptions of-very small, small, medium, large, and very large, and weightings in the 1-5 range.…”

Section: Methodsmentioning

confidence: 99%

Method for Assessment of Water Supply Diversification

Boryczko

Rak

2020

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The approaching prospect of obligatory implementation and pursuit of Water Safety Plans forces water companies to reflect on supplies in crisis situations that, for example, relate to the closure of a basic intake, or scarcity of water due to climates changes (droughts). Where supplies are diversified, there can be greater certainty as to the continuity of good quality supply, even in an emergency. As one of each country’s systems of critical infrastructure, the collective water supply system (CWSS) should be protected, with the diversification of supply treated as a basic tool to raise levels of security among consumers. This article, therefore, presents a method from the authors’ by which diversification may be assessed, including by reference to basic and key elements of the CWSS capable of affecting the continuity of water supply. Sample calculations using the proposed method are also presented here for selected Polish cities. In the event, as only one Polish CWSS can be assigned to the category representing excellent diversification, the suggestion is clearly that Poland’s systems must still progress with the diversification of water supply, in order to further reduce the risk of water shortages.

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Section: Methodsmentioning

confidence: 99%

Method for Assessment of Water Supply Diversification

Boryczko

Rak

2020

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“…During the transport of network water in the distribution system, both values of physiochemical composition indicators can change as well as the bacteriological quality [3,4,7]. Main causes of secondary contamination include lack of chemical and biological stability of water put into distribution, improperly conducted disinfection of water, and changeable hydraulic conditions occurring in the network (water flow rate, pressure) [1,9]. Lack of chemical stability leads to corrosiveness of the material (water aggressivity) or to sedimentation, mainly of calcium carbonate.…”

Section: Introductionmentioning

confidence: 99%

Changes to Water Quality in the Water Supply Network of Zielona Góra

Jakubaszek

Mossetty

2019

Civil and Environmental Engineering Reports

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The article presents physiochemical parameter changes in water supply network of Zielona Góra. On the basis of the obtained test results, the impact of prolonged retention of water in the network on its quality was determined, at the measuring points located on the territory of Zielona Góra. It was shown that together with an increase in distance of measuring points from Water Treatment Plant, content of mainly iron, turbidity and colour increased too. In the results analysis, it was determined that retention time and water distribution are the most significant factors in the network contributing to deterioration of water quality at measuring points.

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“…The physical structure of the distribution system and basic information on water sources are generally well documented for most first-world metropolises. In these settings, water managers traditionally rely on network analyses to study different aspects of water distribution systems, including pressure gradients, flow rates, water losses from the supply system, identification of vulnerable sections, and tracking of disinfectants and contaminants (Boryczko and Tchórzewska-Cieślak, 2014;Pietrucha-Urbanik, 2015;Yoo et al, 2015). These analyses are generally robust; however, they are seldom validated using observational data and can suffer from shortcomings including the absence of unique solutions in underdetermined systems, assumption of invariant flow rates, uncomprehensive or non-inclusiveness of uncertainty in the analysis (Waldrip et al, 2016), and outdated and/or incorrect information on infrastructure (Liggett and Chen, 1994).…”

Section: Introductionmentioning

confidence: 99%

Isotopic reconnaissance of urban water supply system dynamics

Jameel

Brewer

Fiorella

et al. 2018

Hydrol. Earth Syst. Sci.

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Abstract. Public water supply systems (PWSS) are critical infrastructure that is vulnerable to contamination and physical disruption. Exploring susceptibility of PWSS to such perturbations requires detailed knowledge of supply system structure and operation. The physical structure of the distribution system (i.e., pipeline connections) and basic information on sources are documented for most industrialized metropolises. Yet, most information on PWSS function comes from hydrodynamic models that are seldom validated using observational data. In developing regions, the issue may be exasperated as information regarding the physical structure of the PWSS may be incorrect, incomplete, undocumented, or difficult to obtain in many cities. Here, we present a novel application of stable isotopes in water (SIW) to quantify the contribution of different water sources, identify static and dynamic regions (e.g., regions supplied chiefly by one source vs. those experiencing active mixing between multiple sources), and reconstruct basic flow patterns in a large and complex PWSS. Our analysis, based on a Bayesian mixing model framework, uses basic information on the SIW and production volumes of sources but requires no information on pipeline connections in the system. Our work highlights the ability of stable isotopes in water to analyze PWSS and document aspects of supply system structure and operation that can otherwise be challenging to observe. This method could allow water managers to document spatiotemporal variation in flow patterns within PWSS, validate hydrodynamic model results, track pathways of contaminant propagation, optimize water supply operation, and help monitor and enforce water rights.

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Analysis of risk of failure in water main pipe network and of delivering poor quality water

Cited by 13 publications

References 10 publications

Method for Assessment of Water Supply Diversification

Method for Assessment of Water Supply Diversification

Changes to Water Quality in the Water Supply Network of Zielona Góra

Isotopic reconnaissance of urban water supply system dynamics

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