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 20 for “"Plant maintenance"”.
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Optimal Scheduling of Power Plant Maintenance with Gas Portfolio
Power plant maintenance scheduling aims at defining the sequence of preventive maintenance outages of each unit over the planning time horizon so that the overall costs are minimized and all the constraints are satisfied. Optimization in maintenance scheduling could reduce greenhouse gases and help …
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Modeling nuclear power plant maintenance : promoting new discussion and better policy
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Political Science, 1996, and Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1995.
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Reliability-based nuclear power plant maintenance resource allocation in order to reduce unfavorable operational publicity
… systems and nuclear steam supply systems reduced plant reliability, while failures of safety-related systems did not. Risk analysis with fault tree modeling was carried out to quantify risk of major components in turbine-generator systems, and in nuclear steam supply systems. The risk was …
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Wheeled autonomous mobile robots for use in harsh environments: a survey of recent publications
… wide variety of applications, including nuclear plant maintenance, interplanetary exploration, military missions and smart highway systems. This thesis is a survey of recent publications, 1990-1996, of wheeled autonomous mobile robots for harsh environments. Various sensing, navigation, and …
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Predictive analytics for maintenance activities in nuclear power plants: a feasibility study
Nuclear power plants are known for their use of legacy systems and processes. As plants age, the amount of maintenance increases while resources remain finite, leading to unwanted delays, affecting the health of assets and increasing costs. To aid in the modernization and digitization of nuclear …
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The Effects of Pruning on Wind Resistance of Shade Trees
… Care Operations Trees, Shrub, and Other Woody Plant Maintenance - Standard Practices (Pruning). Trees were tested up to speeds of 22.4m*s-1 over 1.6km by driving them in the bed of a truck. Drag, based on a centroid of the crown, and a bending moment was calculated. Drag and bending moment were …
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Effective shutdown maintenance project management
Shutdown maintenance projects are an intergral part of any plant maintenance system. When a plant is shutdown, production stops and major maintenance work and modification of components is carried out. Whatever the size and scope of the shutdown, component project management. is vital if the …
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Maintaining the Atom: U.S. Nuclear Power Plant Life and the 80-Year Maintenance Regulation Regime
… release of radioactivity from a nuclear power plant. To prevent catastrophes, much depends not only on skilled and safe operations, but upon the effective maintenance of these systems. Using the commercial nuclear power industry, of the United States, as a case study, this dissertation examines …
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Investigation of effect of dynamic operational conditions on membrane fouling in a membrane enhanced biological phosphorus removal process
… with a relatively small footprint. However, high plant maintenance and operating costs due to membrane fouling limit the wide spread application of MBRs. Membrane fouling generally depends on the interactions between the membrane and, the activated sludge mixed liquor, which in turn, are affected …
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Enabling Actionable Maintenance Analytics with Ontology-driven Natural Language Processing
Asset maintenance is a crucial aspect of biomanufacturing operations, with significant associated costs. To mitigate these expenses, companies are increasingly adopting predictive maintenance approaches that leverage data to identify potential equipment issues before they arise. Maintenance work …
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Fall harvest management of alfalfa
… period prior to fall harvest (GPPFH) influences plant persistence and succeeding spring yields, and if photosynthesis offsets respiration and allows more flexible fall harvest management than is currently recommended. Final alfalfa harvests were made 10, 20, or 30 September or 10, 20, or 30 …
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A proteomic approach to investigate the response of tef (Eragrostis tef) to drought
… food and forage crop indigenous to Ethiopia. Tef plants are highly adaptable to abiotic stress conditions and are able to grow and produce grain yields under a wide range of environmental conditions, particularly under drought stress. In this study, tef plants were subjected to controlled …
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Review of current asset maintenance in South African ports and recommendations for smart port maintenance
… guidelines prescribed in the TNPA Asset Maintenance Principles and Procedures (AMPP) Manual for waterside infrastructure. The research aims to understand the current challenges experienced with the asset condition assessments, evaluate the effectiveness of the condition assessment methods …
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Mejora en el tiempo de mantenimiento correctivo de las torres de telecomunicaciones en la empresa “Telefónica del Perú” en el departamento de Lima
El presente trabajo de investigación tiene como objetivo realizar un diagnóstico integral del proceso del mantenimiento correctivo de torres de telecomunicaciones en el departamento de Lima, ya que no se estaba cumpliendo con los objetivos propuestos por la empresa. En el 2019 se tenía un objetivo …
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Mejora de procesos en la planificación y ejecución de servicios de mantenimiento del sistema eléctrico
… planning and execution processes of electrical maintenance services based on the use of engineering tools for continuous improvement. The results obtained at the end of the study show an average increase of 5.1% obtained on the profitability of the executed services due to the improvement in the …