Measuring redundancy and its effect on resiliency analysis of a water distribution network

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ID: 285096
2024
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Abstract
Water distribution networks (WDN) are expected to perform its function even after seismic events as its service is essential, not only in keeping the welfare of the consumers, but also in performing disaster risk and management, and emergency operations. Hence, it is important that its service is uninterrupted even during and after a seismic event. To ensure uninterrupted service, WDN must adhere to resilient quality and standards. However, measuring the performance of WDN also poses a challenge as the structure of nodes and links that are interconnected, yet, responding independently to hazards. As observed in developed countries, water distribution networks adhere to resiliency parameters such as robustness, redundancy, resourcefulness, and rapidity. Though no specific resiliency parameters are in place, several guidelines are established by the American Lifeline Alliance (ALA) and Japan Water Works Association (JWWA). For rank A facilities (such as main water distribution, transmission lines, distribution main lines), JWWA sets no light damage; or with light damage but functional; to light damage and may not be functional but can quickly recover its service as its target performance. ALA, on the other hand, sets low rate damage throughout the water system ensuring 90% of customers recover its water service within three days from a seismic event damage, and an amount of damage of 0.03 to 0.06 breaks per 1000 feet for 6-inch diameter pipes as its target performance. Researchers, engineers, and field experts are also pushing for resilient water networks. Frameworks on resiliency and methodologies were presented to aid in quantifying the resiliency of water infrastructures. However, there is still a gap in measuring resiliency based on a framework that considered resiliency to be defined by robustness, redundancy, rapidity, and resourcefulness (4Rs). Though many have established resiliency quantification considering robustness, rapidity, and resourcefulness, there is a limited methodology that considers redundancy and its influence on WDN resiliency. It is critically important to include the influence of redundancy in WDN’s resiliency as the availability of a backup system can help ensure the continuity of functionality. Hence, this study focuses on measuring resiliency considering all 4Rs with emphasis on the influence of redundancy on it. Moreover, there is also a need for a continuous search for a tool to measure redundancy, as existing tools were shown to be not sensitive to parameters known to highly influence redundancy such as pipe capacity, number of alternative paths, and sources. This study aimed to contribute
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Authors Garciano, Lessandro Estelito O.
Journal Malay Journal
Year 2024
DOI
DOI not found
URL
https://animorepository.dlsu.edu.ph/etdd_civ/11
Keywords Keywords not found

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