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 183 for “"shutdown"”.
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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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Nuclear asset shutdown under uncertainty
… licenses. This unexpected wave of premature shutdowns has severe implications for energy and climate policy. It invites us to re-assess the viability and role of nuclear in a transitioning energy sector. The thesis first develops two new tools aimed at measuring nuclear competitiveness and …
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Lunar descent using sequential engine shutdown
The notion of sequential engine shutdown is introduced and its application to lunar descent is motivated. The concept calls for the utilization of multiple fixed thrust engines in place of a single continuously throttleable engine. Downrange position control is provided by properly timed engine …
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Diet and dialysis in acute renal shutdown
Digitized by Kansas Correctional Industries
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Multigenic Regulation of the Shutdown of Immune Responses
… if blocking cell death could affect the shutdown of immune responses by generating increased numbers of antigen-specific memory CD8+ T cells. During acute viral infection, large numbers of effector CD8+ T cells are generated. Following viral clearance, the majority of these cells undergo …
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Use of combined signals for reactor shutdown signal validation
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Nuclear Engineering, 1994.
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System shutdown techniques for energy efficient real time computation
Thesis (M.Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2000.
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An Analysis of Multiple Particle Settling for LMR Backup Shutdown Systems
Made available in DSpace on 2017-07-06T18:42:32Z (GMT). No. of bitstreams: 3 Brock_Richard_W_MS.pdf: 40782738 bytes, checksum: 5617f77bae0a8346e76d9f4196e7d93a (MD5) Brock_Richard_W_MS_ABS.pdf: 541598 bytes, checksum: 34fc07d7a58af0c820f0039e08f41c54 (MD5) license.txt: 4813 bytes, checksum: …
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Extension of activity analysis methodology to maintenance, shutdown, and turnarounds in petrochemical facilities
… beyond construction leading into maintenance and shutdown turnarounds. Activity Analysis is a productivity assessment and improvement method developed by the Construction Industry Institute (CII) in 2010. This thesis describes the adaptation of activity analysis methodology that was developed to …
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Understanding political pressures To shutdown nuclear power plants in the United States and South Korea
Since the mid-1990s, thirty to forty-year-old nuclear power plants have been reaching their designed lifetimes. Many operating licenses, however, are being extended after regulators review safety considerations and environmental impacts associated with each extension. These regulatory reviews have …
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The Reversibility/irreversibility of the Thermohaline Circulation After Its Shutdown: Simulations From a Hierarchy of Climate Models
… supports this finding. Thus, the irreversible shutdown of the THC caused by freshwater addition appears to be a model artefact rather than a likely outcome of global warming.
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Shutdown Dose Rate Modeling for Radiation Requirements Development and Design Trend Analysis in the ARC Fusion Device
To achieve commercial viability, Commonwealth Fusion System’s ARC device must maximize its availability to produce power, thus demanding a rapid maintenance process to replace radiation-damaged components. Designing robotic systems to operate in this radiation environment requires understanding the …
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Actors, Partisan Inclination, and Emotions: An Analysis of Government Shutdown News Stories Shared on Twitter During Dec 2018 and Jan 2019
… present study takes the 2018-2019 government shutdown as the subject of investigation. The results show the prominence in journalistic and political figures in leading the discussion of news stories, the nuance of emotions employed in the news frames, and the choice of pro-attitudinal news …
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Radiation Shielding of Fusion Systems
… and revealed that the code was able to predict shutdown gamma ray doserates to within ±3% of experimentally determined values, for decay times between 3×105 and 107 seconds. The development of the Ion Cyclotron Resonance Heater (ICRH) with regards to neutronics was discussed. The ICRH went …
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Radiation asymmetry and MHD activity in rapid shutdowns on Alcator C-Mod
… system. Massive gas injection (MGI) rapid shutdown is a technique in which large amounts of noble gas are injected into the plasma in order to safely radiate the plasma energy evenly over the entire plasma-facing first wall. However, it has been observed that this energy is not radiated …
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Microcapsule-based techniques for improving the safety of lithium-ion batteries
… battery safety, autonomic, thermally-induced shutdown of Li-ion batteries is demonstrated by depositing thermoresponsive polymer microspheres onto battery anodes. When the internal temperature of the cell reaches a critical value, the microspheres melt and conformally coat the anode and/or …
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A method of generation scheduling in electric utility systems with nuclear units
… stage. AS a result of considering the startup-shutdown cost, the objective function has a fixed charge component in addition to first and second degree polynomials. Representation of the minimum turndown level and minimum Shutdown duration of the generator necessitates the use of O-1 variables …
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Comparative Analysis of Source Term Removal at Cook Nuclear Plant
… Specialty resin was utilitized during the Unit 2 shutdown chemistry protocol to capture and remove Co-60 from the reactor coolant. A CRUD burst was achieved during the first 48 hours of shutdown with the addition of peroxide to achieve significant CRUD removal from the coolant. The study monitored …
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A novel nanoscale delivery system for spatio-temporal delivery of combination chemotherapy
… faced two major obstacles. First, the long-term shutdown of tumor blood vessels by the anti-angiogenesis agent can prevent the tumor from receiving a therapeutic concentration of the chemotherapy agent. Second, inhibiting blood supply drives the formation of intra-tumoral hypoxia, or a lack of …
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