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 “"FHR"”.
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Consideration of fuel behaviour in AGR-like FHR reactor design
… Fluoride Salt-cooled High-temperature Reactor (FHR) is a subclass of Molten Salt Reactor (MSR) that uses solid fuel separated from the molten coolant salt. Previous work showed that British Advance Gas-cooled Reactor (AGR) technology can be used to potentially reduce the time required to develop …
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Tritium transport, corrosion, and Fuel performance modeling in the Fluoride Salt-Cooled High-Temperature Reactor (FHR)
… Fluoride Salt-Cooled High-Temperature Reactor (FHR) is a pebble bed nuclear reactor concept fueled by tristructural isotropic (TRISO) fuel particles embedded in graphite spheres and cooled by a liquid fluoride salt known as "flibe" (7LiF-BeF2). A system of models was developed which enabled …
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Validation Studies of Single-Phase Natural Circulation Response of the Fluoride salt-cooled High-temperature Reactor (FHR)
… a Fluoride salt-cooled High-temperature Reactor (FHR). The loop of interest operates with a single phase, near ambient pressure molten salt coolant. Most of the codes used for LWR safety and licensing were designed to model more complex heat transfer problems. A single phase, one dimensional, …
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Categorizing Fetal Heart Rate Variability with and without Visual Aids
… to correctly categorize fetal heart rate (FHR) variability with and without the use of exemplars. Clinicians and undergraduate students were asked to inspect FHR images and determine into which of four categories they belonged. Each participant took part in three conditions: one in which …
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Design Space Exploration for Salt Cooled Reactor Systems
Fluoride salt-cooled Hight-temperature Reactor (FHR) is a new concept that has seen growing interest as a potential candidate to improve on the safety and economics of existing reactors. It has been suggested that FHR can benefit from advanced Gas-cooled Reactor (AGR) technologies and by that …
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Preventing fuel failure for a beyond design basis accident in a fluoride salt cooled high temperature reactor
… fluoride salt-cooled high-temperature reactor (FHR) combines high-temperature coated-particle fuel with a high-temperature salt coolant for a reactor with unique market and safety characteristics. This combination can eliminate large-scale radionuclide releases by avoiding major fuel failure …
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Tritium thermal desorption testing of nuclear graphites irradiated at fluoride-salt-cooled high-temperature reactor conditions
… Fluoride-Salt-Cooled High-Temperature Reactor (FHR) is a next-generation nuclear plant design that combines successfully demonstrated technologies from other advanced reactor concepts such as tristructural isotropic (TRISO) coated particle fuel, molten flibe salt (LiF-BeF2) coolant, and an …
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Umbilical arterial flow analysis to determine an index of placental impedance
… resistance), placental size, foetal heart rate (FHR), blood pressure pulsatility (BPPI), mean blood pressure (BP), and site of measurement of the FVW along the umbilical artery and thus on the waveform indices which are used to describe it (RI, PI and HRSI). RESULTS/ DISCUSSION: The …
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Fetal Heart Monitoring, Nursing Surveillance, and Cesarean Birth
… examine nursing assessment of fetal heart rate (FHR) tracing and their interventions (nursing surveillance) in response to identification of an FHR tracing consistent with category II pattern and (2) to identify whether nursing surveillance and frequency of category II patterns contribute to the …
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Managing tritium inventory and release with carbon materials in a fluoride salt-cooled high-temperature reactor
… Fluoride Salt-Cooled High-Temperature Reactor (FHR) is an advanced reactor concept, that uses molten-salt coolant and solid-uranium fuel composed of graphite and silicon carbide-encapsulated tri-structural isotropic (TRISO) particles. The primary coolant salt is known as flibe (7Li2BeF4), which …
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Tritium retention in nuclear graphite, system-level transport, and management strategies for the fluoride-salt-cooled high-temperature reactor
… Fluoride-Salt-Cooled High-Temperature Reactor (FHR), which combines a molten Flibe (2LiF-BeF₂) salt coolant and tri-structural isotropic coated-particle fuel to produce power or process heat. Compared to current water-cooled reactors, managing tritium release from a FHR is further complicated by …
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Species Chemistry and Electrochemical Separation in Molten Fluoride Salt
Fluoride salt-cooled high-temperature reactor (FHR) is a safer and potentially less expensive alternative to light water reactor due to the low pressure of primary system, passive decay heat cooling system, chemically inert coolant salt, and high-temperature power cycle. However, one challenge …
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Fluoride-salt-cooled high-temperature test reactor thermal-hydraulic licensing and uncertainty propagation analysis
… Fluoride-salt-cooled High-temperature Reactor (FHR) development step is to design, build, and operate a test reactor. Through a literature review, liquid-salt coolant thermophysical properties have been recommended along with their uncertainties of 2-20%. This study tackles determining the …
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On-line refueling for the advanced high temperature reactor
… Fluoride salt-cooled High-temperature Reactor (FHR) technology, due to its safety features and potential to generate high temperature energy for electricity and process heat applications. The Advanced High Temperature Reactor (AHTR) being considered in this study is a FHR design developed at Oak …
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Tritium production analysis and management strategies for a Fluoride-salt-cooled high-temperature test reactor (FHTR)
… Fluoride-salt-cooled High-temperature Reactor (FHR) can be deployed. The MIT Nuclear Systems Design class proposed a design for a 100 MW FHTR that uses enriched- 7Li flibe (Li2BeF4), has both thermal and fast flux testing positions for fuel and materials testing, and provides a neutron flux …
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Design optimization and analysis of a fluoride salt cooled high temperature test reactor for accelerated fuels and materials testing and nonproliferation and safeguards evaluations
Fluoride Salt Cooled High Temperature Reactors (FHRs) are a new reactor concept that have recently garnered interest because of their potential to serve missions and generate revenue from sources beyond those of traditional base-load light water reactor (LWR) designs. This potential is facilitated …
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Prenatal influences on fetal neurodevelopment: Can a person-centered approach help parse the complexity of maternal vulnerability and protective features and detect early alterations to fetal neurodevelopment trajectories related to prenatal distress?
… of fetal neurodevelopment, fetal heart rate (FHR) and fetal heart rate variability (FHRSD). Third: To test for evidence of maternal transmission of risk to offspring in putative in utero period, by investigating associations between maternal indicators of risk, fetal trajectories, and infant …
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Geenitekniikka BRCA1-mutatoituneen munasarjasyövän diagnostiikassa, mallintamisessa ja hoidossa
… uudelleenluokittelussa, ja RAD51-pohjainen fHR-testi täydentää diagnostiikkaa arvioimalla kasvaimen HR-toiminnallisuutta kudosnäytteistä. Menetelmät edellyttävät kuitenkin laajempaa kliinistä validointia. CRISPR-Cas9-muokatut transplantaatiomallit soveltuvat mutaatioyhdistelmien ja …
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Separation and Properties of La₂O₃ in Molten LiF-NaF-KF Salt
… fluoride salt cooled high temperature reactor (FHR), which is funded by the United States Department of Energy (DOE), has developed smoothly with the ultimate goal of a 2030 deployment. One challenge presented by FHR is that the primary coolant salt can acquire contamination from fuel failure …
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An examination of the explicit adoption of Corporate Social Responsibility by transnational tourism corporations in consideration socio-cultural impacts of tourism in the context of Kenya
… [TUI] and Fairmont Hotels and Resorts [FHR] in the example of Kenya, in consideration of socio-cultural tourism impacts and, specifically with regards to addressing the needs and expectations of the indigenous Maasai and Mijikenda communities. The perspectives of elites representing …
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