Seed and blanket thorium-reprocessed fuel ADS: Multi-cycle approach for higher thorium utilization and TRU transmutation

Vu, Thanh Mai; Kitada, Takanori

doi:10.1016/j.anucene.2014.08.025

Cited by 9 publications

(4 citation statements)

References 6 publications

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“…Without high power density and high enrichment in the seed region, it may take inefficiently long period of irradiation to sufficiently breed 233 U from 232 Th which in turn negatively affects the overall fuel economy 20‐23 . During thorium irradiation for breeding, either very high amount of seed is needed to ensure a single‐batch operation or the thorium needs to remain very long in the reactor core to endure multiple seed refueling cycles to enable sufficient 233 U breeding for the in‐situ burning 50‐52 . As such, the seed‐and‐blanket configuration may not be practical for a once‐through cycle core.…”

Section: Thorium Seed‐and‐blanket Methodsmentioning

confidence: 99%

Review of the microheterogeneous thoria‐urania fuel for micro‐sized high temperature reactors

2020

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Summary This paper presents a systematic review of the micro‐modular thorium‐fueled high temperature reactors (HTR) loaded with duplex fuel pellet design. Specifically, each unique criterion of the design is discussed separately in an attempt to understand the combined advantages of the proposed reactor. Micro modular HTRs have great potential as a source of electricity or industrial heat in the future. The use of thorium not only improves its economic performance and safety, but also prolongs its operation. Nevertheless, the traditional seed‐and‐blanket configuration would not be able to maximize the thorium fuel burnup. As such, a new tristructural‐isotopic (TRISO) fuel based on duplex pellet designs were proposed instead. It should be noted that these duplex pellets were not practical for pressurized water reactor (PWR) technology due to its uneven power distribution which possibly leads to a very high local pellet temperature. However, this unorthodox inherent characteristics of the duplex pellets may actually suit the HTR burnup profile better due to its substantially higher thermal margin ‐ thus possibly enabling a relatively long operation of the HTR. The paper shall thereby provide a reasonably sound justification for the detailed technical investigations of the proposed reactor design.

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Section: Thorium Seed‐and‐blanket Methodsmentioning

confidence: 99%

Review of the microheterogeneous thoria‐urania fuel for micro‐sized high temperature reactors

2020

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“…They reached a conclusion that considering the thorium in the nuclear power plants has a significant contribution to the reduction of radiotoxicity of spent nuclear fuel. Similarly, Vu and Kitada 36 and Jordan et al 37 also highlighted the significant role of thorium to minimize wastes of the nuclear energy process.…”

Section: Literature Reviewmentioning

confidence: 97%

The theory of inventive problem solving (TRIZ) ‐based strategic mapping of green nuclear energy investments with spherical fuzzy group decision‐making approach

et al. 2021

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Summary The aim of this study is to define strategies to increase green nuclear energy investments. Within this context, a model is suggested that includes two different stages. Firstly, the consensus‐based fuzzy preferences are determined for these investments. For this purpose, four different TRIZ‐based strategies are identified, which have an influence on the effectiveness of these projects. Furthermore, in the second stage, the significance weights of these strategies are calculated by considering the spherical fuzzy DEMATEL approach. The findings indicate that dynamicity is the most appropriate TRIZ strategy for the effectiveness of green nuclear energy investments. In addition, the prior action is another significant strategy that should also be considered in these projects. It is obvious that sufficient technological infrastructure is very important for the performance of green nuclear power plants and there is a rapid development of this technology. Because of this situation, these nuclear power plants should be designed effectively so that they can be adoptable to any changes in the technology. In this scope, qualified personnel should be employed, and communication between departments should be effective and of high quality. With the help of these issues, technological changes can be adopted more easily.

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“…The energy storage process is based on the principle of single-phase cooling and heating, two phase melting and solidification, etc The transition metal silicides with higher thermal performance, withstanding conditions of high pressure/temperature, and having enhanced thermophysical properties hold much potential in the advanced aerospace technology [57][58][59][60][61][62]. It has been recognized that thorium-based materials for nuclear fuels have considerable advantage over uranium-based nuclear fuel [57,[63][64][65][66][67][68]. For example, in contrast to uranium-based fuel materials, thorium-based materials do not support nuclear chain reactions in the nuclear plants.…”

Section: Thermoelectric Efficiencymentioning

confidence: 99%

Low-temperature enhanced figure of merit of ThSi_xP_1-x and prospects for thermoelectric energy performance

et al. 2023

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Rare earth metals and actinides-based materials gained immense attention of scientists and technologists owing to their fascinating fundamental and applied prospects. These are large density, neutron abundance, enhanced melting temperature and thermal stability which enhance their thermal performance. Herein, we report on the low temperature-enhanced thermoelectric performance of ThP through silicon substitution via ThSixP1-x (x = 0, 0.25, 0.5, 0.75, 1). For the density functional theory-based quantum computation analysis on the Si substitution-assisted properties of ThP, we utilize all-electron full-potential with linearized augmented plane wave. For the theoretical characterization of the compounds for the desired properties, we treat the exchange-correlation density functional within TB-mBJ approximation. The computed thermoelectric properties via Boltzmann theory as implemented in BoltzTrap computer code are Seebeck coefficient (S), electrical (σ) and thermal conductivity (k), power factor (PF) (S^2 σ), and figure of merit (ZT). The substitution of Si into ThP renders a considerable enhancement of thermoelectric and transport performance of the ThSixP1-x samples with enhanced σ, PF, and ZT of orders 3.0 × 1020 (Ω.s.cm)^(-1), 2.5 × 1012 Wm-1K-2s-1 and 1.6 at 50 K, respectively. To our knowledge, this is the highest low-temperature thermal efficiency achieved for the metallic thorium silicides. As such, the reported results hold great promise for fundamental prospects and technological interest such as thermoelectricity and fertile materials as nuclear fuel for clean nuclear energy technology.

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Seed and blanket thorium-reprocessed fuel ADS: Multi-cycle approach for higher thorium utilization and TRU transmutation

Cited by 9 publications

References 6 publications

Review of the microheterogeneous thoria‐urania fuel for micro‐sized high temperature reactors

Review of the microheterogeneous thoria‐urania fuel for micro‐sized high temperature reactors

The theory of inventive problem solving (TRIZ) ‐based strategic mapping of green nuclear energy investments with spherical fuzzy group decision‐making approach

Low-temperature enhanced figure of merit of ThSi_xP_1-x and prospects for thermoelectric energy performance

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Seed and blanket thorium-reprocessed fuel ADS: Multi-cycle approach for higher thorium utilization and TRU transmutation

Cited by 9 publications

References 6 publications

Review of the microheterogeneous thoria‐urania fuel for micro‐sized high temperature reactors

Review of the microheterogeneous thoria‐urania fuel for micro‐sized high temperature reactors

The theory of inventive problem solving (TRIZ) ‐based strategic mapping of green nuclear energy investments with spherical fuzzy group decision‐making approach

Low-temperature enhanced figure of merit of ThSixP1-x and prospects for thermoelectric energy performance

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Low-temperature enhanced figure of merit of ThSi_xP_1-x and prospects for thermoelectric energy performance