3.11 - Sphere-Pac and VIPAC Fuel
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Irradiation performance and first examinations of Americium bearing blanket fuel from the MARINE irradiation experiment
2023, Journal of Nuclear MaterialsImproved doping and densification of uranium oxide microspheres using starch as pore former
2023, Journal of Nuclear MaterialsInfiltration of porous uranium oxide microspheres prepared by internal gelation
2022, Journal of Nuclear MaterialsCitation Excerpt :However, a major drawback lies in the generation of dust containing radioactive MA isotopes, which will accumulate in filters and on the walls of shielded infrastructure, posing a radiological hazard [14]. A possible remediation is the use of aqueous conversion routes to produce microspheres, which can be directly used as sphere-pac or vipac fuel [15], or alternatively, be manufactured into pellets [16]. One important disadvantage of these routes is the generation of liquid waste streams loaded with MA traces, which are often complicated and expensive to dispose.
Structural changes of Nd- and Ce-doped ammonium diuranate microspheres during the conversion to U<inf>1-y</inf>Ln<inf>y</inf>O<inf>2±x</inf>
2020, Journal of Nuclear MaterialsCitation Excerpt :The resulting pH increase causes the solidification. The spherically shaped precipitate is thermally treated and can afterwards directly be used as particle fuel [9] or compressed into the commonly used fuel pellets [10]. The IG process offers a dust-free fabrication route to convert mixtures of different metal cations into a homogeneous precipitate and was used to prepare MOX particles [11] and U/Pu nitride particles [12].