Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 25 for “"water pipe"”.
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Design of a robotic water-pipe rehabilitation
Corrosion in water pipeline causes leak and forms tubercle at the vicinity of leaks. Various in-pipe robots have been developed in recent years for locomotion and inspection along the pipeline. Not much focus is put on in-pipe operations such as pipe maintenance and rehabilitation. This thesis …
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Robot design for leak detection in water-pipe systems
Leaks are major problem that occur in the water pipelines all around the world. Several reports indicate loss of around 20 to 30 percent of water in the distribution of water through water pipe systems. Such loss of water represents critical waste of valuable resources, especially in countries such …
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Data-Driven Approaches in Water Pipe Condition Assessment and Failure Prediction
The increasing frequency of failures in ageing water distribution networks has created significant operational, financial, and environmental challenges for utility providers. This PhD research presents a novel integrated approach for predictive maintenance of buried water pipes, combining machine …
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A Discrete Choice Mean Variance (EV) Cost Model to Measure Impact of Household Risk from Drinking Water Pipe Corrosion
… pin-sized hole that forms in copper, drinking-water pipes. These leaks can cause substantial damage and cost homeowners thousands of dollars in repairs. Since pinhole leaks are not related to the age of pipe material, a homeowner is subject to the risk of additional costs if a pinhole leak …
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Effects of Water Pipe Burst on water quality and non revenue water in Arusha city: a case study of AUWSA
Chronic water losses have been the hallmark of Tanzania especially AUWSA water management over the decades. The rapid growth of Tanzanian cities including Arusha City, coupled with increased volumes of water for irrigated agriculture and industry, has meant that there is much less water to go …
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Information Analysis of Spatiotemporal Data Stream–Models, Algorithms and Evaluations
… UVs. The temporal intensive application is the water distribution system (WDS), where hydraulic sensors are deployed in the underground water pipe network. Each sensor measures hundreds of thousands of hydraulic readings per day. In the UVs surveillance application, a grid-based model is …
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Backfill pressures within a reinstated trench: The Gatineau field project.
… of shrinking municipal budgets and aging water distribution system infrastructure, the National Research Council of Canada undertook a joint research project with the City of Gatineau, PQ, to better understand the nature of backfill pressures acting through the reinstated trench and upon …
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A real-time robotic platform for pipeline inspection
Pipelines are used around the world to transport raw materials, waste products, and, critically, potable water. Protecting the pipes from the elements often leaves them difficult to inspect for leaks and corrosion, which can cause costly, even deadly, damage. Currently, typical inspection methods …
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Design of soft-body robot with wireless communication for leak detection in large diameter pipe systems
Water leaks pose a major problem of efficiency and cost to municipalities and industries that cover significant area. While current commercial methods to address these problems do not provide convenient or low cost methods to detect leaks, a soft-body pipe leak detection robot has been developed to …
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Positive pressure induced channeled suction cups
Leaking in water pipe is a critical issue in Middle Eastern countries such as Kuwait where water is scarce. In-pipe robots can be dispatched to discover the network and inspect the inner surface of the pipe. This thesis describes the design and characterization of suction pads for in-pipe robots. …
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Prioritization of Potable Water Infrastructure Investments on the Navajo Nation
… in part by the lack of an adequate potable water infrastructure which has resulted in health disparities and has attributed to stunted economic growth within the Nation. Large candidate regional water transmission pipelines projects aimed to meet these needs have been identified. With …
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Low-cost soft sensors and robots for leak detection in operating water pipes
Every day, about 20% of the clean water produced in the world is lost due to pipe leaks. Due to limitations in available technologies, most of the leaks are either not found, or found too late. Every year, there are 240,000 water pipe breaks in the US, and many of them cause sinkholes and other …
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A Study on High-Speed Magnetic Induction Tomography Instrumentation Aiming at Low Conductivity Applications
… rate. Specifically the multiphase flow in oil pipes and the detection of the cardiac activity and the lung activity were targeted.A thorough investigation for the specifications, the design and the development of the required MIT instrumentation was performed. Two low cost MIT systems operating …
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Experimental Investigations of Internal Air-water Flows
… analysis techniques to the study of gas-liquid pipe flows, with a focus on conditions occurring in header-feeder systems of nuclear reactors under different accident scenarios. Novel experimental techniques have been proposed for the identification of the flow regime and measurement of the flow …
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Assessment of ocean thermal energy conversion
… other applications such as production of freshwater, seawater air-conditioning, marine culture and chilled-soil agriculture. Previous studies on the technology have focused on promoting it to generate electricity and produce energy-intensive products such as ammonia and hydrogen. Though the …
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Development of a Novel Performance Index and a Performance Prediction Model for Metallic Drinking Water Pipelines
… authors have developed many different types of water pipe condition and failure models using the various methodologies available. Contrary, current utilities are struggling to maintain their current water infrastructure system, due to the lack of effective prediction tools at hand. The gap …
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Application and Evaluation of Non-Destructive Testing Methods for Buried Pipes
… condition assessment methods for both cast iron water pipes and large diameter sewer and culvert systems. A state-of-the-art review of Non-destructive Testing (NDT) technologies available for cast iron water pipes and corrugated steel culverts identified the strengths and weaknesses of each …
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Mahmud II and Ottoman diplomacy in the context of the Mehmed Ali Problem (1832-‐1839) : with special reference to the Ottoman archives in İstanbul
… was not a Sultan who merely sat back smoking his water pipe and watched incidents unfold in his Empire’s lands; On the contrary, he had his own diplomatic plan, courage, motivation, resourcefulness and some capable diplomats who did their utmost to faithfully implement their sovereign’s diplomatic …
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Interplay of Water Chemistry and Entrained Particulates in Erosion Corrosion of Copper and Nonleaded Alloys in Potable Water Systems
… corrosion of plumbing materials in domestic water systems is a complex phenomenon driven by water quality, hydrodynamic and electrochemical factors. Erosion corrosion accounts for over a third of copper hot water system failures in the U.S., hundreds of millions in damage, and may be expected …
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Smoke Signals: An Analysis of Policies to Reduce Hookah Use Among Adolescents in Washington State
… age; and (3) increasing the state excise tax on pipe tobacco to equal that of the state excise tax on cigarettes. These policy options were analyzed using three criteria: (a) the predicted reduction in the prevalence of hookah use among twelfth graders; (b) the fiscal impact on WA State; and (c) …
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