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Uranium zirconium hydride (UZrH, U-ZrH_x), a dispersion of metallic uranium in a δ-ZrH_1.6 matrix, is used as the fuel in TRIGA reactors.^[1] UZrH fuel is used in most research reactors at universities and has a large, prompt negative fuel temperature coefficient of reactivity, meaning that as the temperature of the core increases, the reactivity rapidly decreases.^[2]

Franco-Belge de Fabrication du Combustible, in Romans-sur-Isère, France, is the only manufacturer of this fuel.^[3]

References

^ Olander, D.; Greenspan, Ehud; Garkisch, Hans D.; Petrovic, Bojan (August 2009). "Uranium–zirconium hydride fuel properties". Nuclear Engineering and Design. 239 (8): 1406–1424. doi:10.1016/j.nucengdes.2009.04.001.
^ "TRIGA Fuels".
^ "Plant upgrades ensure continued TRIGA fuel supply : Uranium & Fuel - World Nuclear News".

External links

Technical Foundations of TRIGA: Thermalization In Zirconium Hydride

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TRIGA

[1] Olander, D.; Greenspan, Ehud; Garkisch, Hans D.; Petrovic, Bojan (August 2009). "Uranium–zirconium hydride fuel properties". Nuclear Engineering and Design. 239 (8): 1406–1424. doi:10.1016/j.nucengdes.2009.04.001.

[2] "TRIGA Fuels".

[3] "Plant upgrades ensure continued TRIGA fuel supply : Uranium & Fuel - World Nuclear News".

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