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PhD Dissertation_Ram Mazumder.pdf (9.82 MB)

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Risk-Based Asset Management Framework for Water Distribution Systems

Mazumder, Ram Krishna
http://orcid.org/0000-0002-9589-4654
http://rave.ohiolink.edu/etdc/view?acc_num=case1594169243438607

Abstract Details

2020, Doctor of Philosophy, Case Western Reserve University, Civil Engineering.
Water Distribution Systems (WDSs) are the most essential civil infrastructure systems for the functioning of communities. Economic prosperity and social wellbeing of modern society depend on reliable, robust, and resilient WDSs. Unfortunately, a majority of water pipelines in the United States (U.S.) are in service beyond their intended design life and have experienced a high failure rate. Aged metallic pipelines are susceptible to failure due to corrosion deterioration, traffic loading, excessive water pressure, seismic loading, and other factors. These failures result in enormous direct and indirect economic and societal consequences. Moreover, water pipe failures often lead to cascading consequences to other interconnecting infrastructure, especially road networks. In the face of these frequent failures, water utilities are struggling to maintain their assets with limited budget and resource constraints. There is a clear need to develop a comprehensive framework to assess and mitigate the risk posed by combined external loading (e.g., water pressure, traffic loading, earthquakes) and corrosion deterioration to WDSs. This research presents a risk-based asset management decision-support framework for WDSs subjected to combined corrosion and external loading, considering both component-level and system-level risk. A critical literature review of existing literature on various aspects of asset management is performed to establish the knowledge gap between current practice and theory in WDS research. Various fragility models of pipelines and systems are developed considering the effect of corrosion deterioration. Uncertainties involved in fragility and restoration models are accounted for using the probabilistic approaches. The seismic restoration process is modeled considering the repair activities overtimes. Next, a framework is proposed that incorporates topological and hydraulic reliability model, seismic functionality and resilience model, scenario-based seismic damage and renewal cost analysis, post-disaster repair sequence model, and risk-based decision tools. The framework developed in this research is intended to support water utilities in long term asset management and investment decisions. Although this approach is presented for WDSs, the proposed asset management framework can be applied to other types of networked systems.
Yue Li, Dr. (Advisor)
Wojbor Woyczynski, Dr. (Committee Member)
Xiong Yu, Dr. (Committee Member)
Christian Carloni, Dr. (Committee Member)
330 p.
Civil Engineering
Water Distribution Systems, Risk Analysis, Reliability Analysis, Seismic Hazard, Corrosion, Asset Management

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Citations

  • Mazumder, R. K. (2020). Risk-Based Asset Management Framework for Water Distribution Systems [Doctoral dissertation, Case Western Reserve University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=case1594169243438607

    APA Style (7th edition)

  • Mazumder, Ram Krishna. Risk-Based Asset Management Framework for Water Distribution Systems. 2020. Case Western Reserve University, Doctoral dissertation. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=case1594169243438607.

    MLA Style (8th edition)

  • Mazumder, Ram Krishna. "Risk-Based Asset Management Framework for Water Distribution Systems." Doctoral dissertation, Case Western Reserve University, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=case1594169243438607

    Chicago Manual of Style (17th edition)

case1594169243438607
218
© 2020, all rights reserved.
This open access ETD is published by Case Western Reserve University School of Graduate Studies and OhioLINK.