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 26 for “"Fukushima Daiichi"”.
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STAMP applied to Fukushima Daiichi nuclear disaster and the safety of nuclear power plants in Japan
… an extremely severe nuclear accident at the Fukushima Daiichi Nuclear Power Plant. This thesis analyzes why the stakeholders could not prevent the Fukushima Daiichi nuclear disaster, and, with regard to the future nuclear safety in Japan, what the potentially hazardous control actions could …
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Reactor Core Isolation Cooling Pump Performance in Multiphase Conditions
… caused the operation of three reactors at the Fukushima Daiichi nuclear site to be interrupted. The seismic activity initiated the shutdown of the three reactors and the RCIC system came online in the two reactors equipped with a RCIC system. The RPV must have decay heat removal after shutdown. …
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A framework for analyzing nuclear power multiunit accident scenarios and providing accident mitigation and site improvement suggestions
During the Fukushima Daiichi and Daini accidents, the interactions of multiple units at the same site made accident mitigation more difficult compared to single unit sites. The accidents revealed important multiunit risk sources that are not identified by risk assessments for single-unit sites. …
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Impact of reactor environment on quenching heat transfer of accident tolerant fuel cladding
… engineering community after the accidents at Fukushima-Daiichi. The primary focus of the ATF program is to identify alternative fuel and cladding technologies that may provide enhanced safety, competitiveness, and economics. The new fuel design must also be compatible with present-day LWR …
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Epistemologies of safety : a comparative study of contemporary French and American reactor design practices
… their response to crisis (in this case the Fukushima Daiichi accident). I find that designers broadly take two different approaches to the early stages of design.
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Knowledge management as the next nuclear safety regulatory evolution
… at Three Mile Island, Chornobyl, and Fukushima Daiichi, and the conflict in Ukraine and the occupation of the Zaporizhzhia nuclear power plant presents an opportunity for new lessons; a primary of which, with respect to knowledge management, is from the sudden loss of a significant …
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Desorption of Non-Exchangeable Radiocesium in soil from Fukushima Prefecture, Japan
<p>The Fukushima Daiichi Nuclear Powerplant was struck by an earthquake and a tsunami resulting in the meltdown of four of the six reactor cores operating at the plant. As a result, nuclear waste was released from the plant, contaminating the soil in the region. Most of the contamination was …
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Synthesis and oxidation behavior of Cr alloyed uranium borides at high temperatures
Following the nuclear accident at Fukushima Daiichi Power Station in 2011, an urgent need for safer, more economical, and versatile nuclear fuels has arisen. In recent years, uranium boride (as a tetraboride and diboride) has been further investigated as a candidate fuel form for its high thermal …
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The Improvised Expert: Performing authority after Fukushima (2011-2018)
… At every turn, those responding to the 2011 Fukushima Daiichi nuclear power plant disaster can be found drawing lines, which determine: where people can live, what they can eat, and who receives additional protections (Potassium Iodide pills, for example). The essential questions of …
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Effects of thermal stresses on Pressurised Water Reactor nuclear containment vessels following a Loss of Coolant Accident with assimilated containment filtered venting system
… water reactor (BWR) designs, but following the Fukushima Daiichi nuclear accident, they are being introduced as severe accident management systems to manage the threat of containment over-pressurisation in pressurised water reactors (PWR). Finally, the rate of change in containment pressure and …
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Discrete-Time Bayesian Networks Applied to Reliability of Flexible Coping Strategies of Nuclear Power Plants
The Fukushima Daiichi accident prompted the nuclear community to find a new solution to reduce the risky situations in nuclear power plants (NPPs) due to beyond-design-basis external events (BDBEEs). An implementation guide for diverse and flexible coping strategies (FLEX) has been presented by …
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Experimental investigations of natural circulation in a separate-and-mixed effects test facility mimicking prismatic modular reactor (PMR) core
"After the Fukushima Daiichi nuclear power plant accident in 2011, significant attention was directed to investigate natural circulation thermal-hydraulics in Prismatic Modular Reactors (PMRs). Natural circulation is employed as a passive safety feature that passively removes the decay heat …
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An Integrative Approach to Evaluating Radiocesium Contamination in Fukushima Prefecture
… earthquake in Japan led to the meltdown of the Fukushima Daiichi Nuclear Power Plant which released radionuclides into the surrounding regions. Of these radionuclides, cesium-137 (<sup>137</sup>Cs<sup>+</sup>) has been shown to be the most abundant. Research has shown that adsorption of …
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The Politics of Disaster and Their Role in Imagining an Outside. Understanding the Rise of the Post-Fukushima Anti-Nuclear Movements
… and tsunami caused the meltdown of the Fukushima Daiichi nuclear plant, which triggered the largest wave of activism since the 1960s. Based on the author’s fieldwork on the post-Fukushima anti-nuclear movements in Tokyo, this thesis investigates how the disaster impacted people’s sense …
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Anthropogenic and natural radioisotopes as tracers for contaminant sources and particulate fluxes
… radioisotopes released as a result of the 2011 Fukushima Daiichi nuclear power plants accident have the potential to negatively impact human and environmental health. This study evaluates 137Cs, 90Sr, and 129I concentrations in seawater off the coast of Japan, reconciles the sources of …
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Anthropogenic and natural radioisotopes as tracers for contaminant sources and particulate fluxes
… radioisotopes released as a result of the 2011 Fukushima Daiichi nuclear power plants accident have the potential to negatively impact human and environmental health. This study evaluates 137Cs, 90Sr, and 129I concentrations in seawater off the coast of Japan, reconciles the sources of …
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First Order Assessment of Heat Transfer due to the Loss of Inventory in a Spent Fuel Pool
The Fukushima Daiichi Nuclear Power Plant accident created renewed international interest in the behaviour of spent fuel subsequent to a complete loss of water inventory in a spent fuel pool (SFP). The study conducted in this dissertation serves as a starting point in gaining an understanding of …
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SERPENT Modeling of the Transient Reactor Test Facility and Comparison with Measured Experimental Data
Following the events at the Fukushima Daiichi nuclear power plant complex on March 11th 2011, there is an increased need for research into accident tolerant light water reactor fuels. In addition to the need for accident tolerant fuels testing there is a rising demand for clean renewable energy and …
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Utilization of aerial sensor platforms for characterization of land-based, distributed radiological sources for radiological event response
… device, to a large-scale disaster (e.g., Fukushima Daiichi); the latter through the use of UAV swarms. These systems would also prove useful for localization of point sources. The research described herein includes the successful development and characterization of a ground-truth radiation …
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High temperature steam oxidation of titanium-coated Zircaloy-2 and Titanium-Zirconium Alloys
In March 2011, the Fukushima Daiichi Nuclear Disaster changed the course of nuclear power production worldwide. Though most people have focused on the negatives of the events, there have been major advantageous outcomes. An industry, which general consensus would say is extremely safe, has become …
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