U-Si Based Fuel System

Leenaers, A.; Wight, Jared; Berghe, S. Van den; Ryu, Ho Jin; Valery, J.F.

doi:10.1016/b978-0-12-803581-8.11607-8

Cited by 6 publications

(4 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Reactor fuels are based on compounds of one or more fissile and/or fertile nuclides, mainly of U and Pu. They can be either refractory oxides, typically U oxides and MOX, which are also used in current generation reactors [106][107][108][109], or other ceramics, such as carbides [110], nitrides [111,112] and silicides [107,113,114], as well as metallic alloys [115]. Other fuel concepts consider ceramic/ceramic or ceramic/metal composites [116], as well as fluid molten salt fuels [117].…”

Section: Fuel Materials For Next Generation Nuclear Systemsmentioning

confidence: 99%

Materials for Sustainable Nuclear Energy: A European Strategic Research and Innovation Agenda for All Reactor Generations

Malerba

Mazouzi²,

Bertolus

et al. 2022

Energies

View full text Add to dashboard Cite

Nuclear energy is presently the single major low-carbon electricity source in Europe and is overall expected to maintain (perhaps eventually even increase) its current installed power from now to 2045. Long-term operation (LTO) is a reality in essentially all nuclear European countries, even when planning to phase out. New builds are planned. Moreover, several European countries, including non-nuclear or phasing out ones, have interests in next generation nuclear systems. In this framework, materials and material science play a crucial role towards safer, more efficient, more economical and overall more sustainable nuclear energy. This paper proposes a research agenda that combines modern digital technologies with materials science practices to pursue a change of paradigm that promotes innovation, equally serving the different nuclear energy interests and positions throughout Europe. This paper chooses to overview structural and fuel materials used in current generation reactors, as well as their wider spectrum for next generation reactors, summarising the relevant issues. Next, it describes the materials science approaches that are common to any nuclear materials (including classes that are not addressed here, such as concrete, polymers and functional materials), identifying for each of them a research agenda goal. It is concluded that among these goals are the development of structured materials qualification test-beds and materials acceleration platforms (MAPs) for materials that operate under harsh conditions. Another goal is the development of multi-parameter-based approaches for materials health monitoring based on different non-destructive examination and testing (NDE&T) techniques. Hybrid models that suitably combine physics-based and data-driven approaches for materials behaviour prediction can valuably support these developments, together with the creation and population of a centralised, “smart” database for nuclear materials.

show abstract

Section: Fuel Materials For Next Generation Nuclear Systemsmentioning

confidence: 99%

Materials for Sustainable Nuclear Energy: A European Strategic Research and Innovation Agenda for All Reactor Generations

Malerba

Mazouzi²,

Bertolus

et al. 2022

Energies

View full text Add to dashboard Cite

show abstract

“…A higher loading or density increases the flexibility to find a suitable design option (e.g. increasing total uranium in the same volume/fuel core thickness) and can accommodate a larger range in suitable meat thicknesses (in relation to the classical 4.8 gU/cc U 3 Si 2 ) [4,5] with the same surface loading or gain in surface loading at a constant meat thickness. It should be noted that many factors interplay in the selection of a suitable reactor-specific conversion alternative.…”

Section: Fuel Loading and Systemsmentioning

confidence: 99%

“…The experience and fabrication status of the LEU 4.8 gU/cc loading U 3 Si 2 fuel system is explained in greater detail in [4] and this fuel is widely used in research reactors throughout the world. This fuel type is a roll-bonded dispersion fuel core, with U 3 Si 2 fuel dispersed in a pure aluminium matrix.…”

Section: High-loaded U 3 Si 2 Dispersion Fuelmentioning

confidence: 99%

Innovation and qualification of LEU research reactor fuels and materials

Wight

Valance

Holmström

2023

EPJ Nuclear Sci. Technol.

Self Cite

View full text Add to dashboard Cite

Two projects within the Euratom Research and Training Programmes 2014–2018 and 2019–2020 are focused on the innovation and qualification of novel nuclear fuels for conversion from highly-enriched uranium to low-enriched uranium (LEU) and for securing the supply chain of EU research reactors into the future. The LEU-FOREvER project is drawing to a close and has made significant progress in developing and demonstrating the uranium-molybdenum fuel system, demonstrating the viability of a high-density uranium-silicide fuel for EU high-performance research reactors (BR2, RHF, FRM-II, JHR). This project has significantly increased the fabrication know-how and fuel performance understanding of the uranium-molybdenum and high-density uranium-silicide dispersion fuel systems. Further, a new, innovative and increased performance design for the LVR-15 research reactor fuel assembly has been engineered and a demonstration is planned in 2022. In the EU-QUALIFY project, which began in 2020, the planning of four demonstration irradiation tests has been nearly completed and fabrication development of the various fuel systems is ongoing, including the establishment of an EU monolithic uranium-molybdenum fabrication capability. It is expected that the results of this project will begin or complete the data gathering necessary for generic fuel qualification of the LEU uranium-molybdenum dispersion and monolithic fuel systems, and the LEU high-density uranium-silicide fuel system.

show abstract

“…For instance, the addition of approximately 7 -10 wt% of molybdenum to uranium has been intensively studied as a fuel for RTRs due to the high chemical stability of the γ-U(Mo) phase, its stability under irradiation and the increased density of uranium (ρ U ≈ 16-17 g U cm −3 ) (Snelgrove et al 1997, Leenaers et al 2020a. Other materials under consideration include U 3 Si 2 (ρ U ≈ 11.3 g U cm −3 ) (Leenaers et al 2020b), UN (ρ U ≈ 13.5 g U cm −3 ) (Durand andLaudamy 1994, Wallenius 2020), UC (ρ U ≈ 13.0 g U cm −3 ) (Clement Ravi Chandar et al 2020) and UB 2 (ρ U ≈ 11.7 g U cm −3 ) (Turner et al 2020) among others.…”

Section: Introductionmentioning

confidence: 99%

From caged compounds with isolated U atoms to frustrated magnets with 2- or 3-atom clusters: a review of Al-rich uranium aluminides with transition metals

Pasturel,

Pikul

2024

Rep. Prog. Phys.

View full text Add to dashboard Cite

Crystal structures and physical properties of four families of Al-rich ternary uranium compounds with transition metals (TE) are reviewed, namely UTE2Al20, UTE2Al10, U6TE4Al43, and U3TE4Al12. The compounds can be described as consisting of 1 (isolated), 2 (dumbbells) or 3 (triangles) uranium atom clusters, surrounded (1-2-20, 1-2-10 and 6-4-43) or not (3-4-12) by large cages, whichstrongly influence their magnetic and related properties. Indeed, the ground states of the described systems evolve from Curie-like paramagnetism in the case of the phases with well-isolated, single U-atoms, to complex magnetic order or possible frustrated magnetism in the case of the systems with uranium triangles forming a breathing kagome lattice. We argue that the four families of uranium aluminides described in this review provide a unique opportunity to study magnetic interactions between U magnetic moments while gradually increasing the number of their nearest magnetic neighbors, and may also be helpful in understanding the fundamental origin of magnetic freezing phenomena.

show abstract

U-Si Based Fuel System

Cited by 6 publications

References 24 publications

Materials for Sustainable Nuclear Energy: A European Strategic Research and Innovation Agenda for All Reactor Generations

Materials for Sustainable Nuclear Energy: A European Strategic Research and Innovation Agenda for All Reactor Generations

Innovation and qualification of LEU research reactor fuels and materials

From caged compounds with isolated U atoms to frustrated magnets with 2- or 3-atom clusters: a review of Al-rich uranium aluminides with transition metals

Contact Info

Product

Resources

About