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Division Spotlight
Fuel Cycle & Waste Management
Devoted to all aspects of the nuclear fuel cycle including waste management, worldwide. Division specific areas of interest and involvement include uranium conversion and enrichment; fuel fabrication, management (in-core and ex-core) and recycle; transportation; safeguards; high-level, low-level and mixed waste management and disposal; public policy and program management; decontamination and decommissioning environmental restoration; and excess weapons materials disposition.
Meeting Spotlight
Utility Working Conference and Vendor Technology Expo (UWC 2024)
August 4–7, 2024
Marco Island, FL|JW Marriott Marco Island
Standards Program
The Standards Committee is responsible for the development and maintenance of voluntary consensus standards that address the design, analysis, and operation of components, systems, and facilities related to the application of nuclear science and technology. Find out What’s New, check out the Standards Store, or Get Involved today!
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Latest News
Oklo completes end-to-end demonstration of advanced fuel recycling
Oklo Inc. has announced that it has completed the first end-to-end demonstration of its advanced fuel recycling process as part of an ongoing $5 million project in collaboration with Argonne and Idaho National Laboratories. Oklo’s goal: scaling up its fuel recycling capabilities to deploy a commercial-scale recycling facility that would increase advanced reactor fuel supplies and enhance fuel cost effectiveness for its planned sodium fast reactors.
Kostadin A. Dinov, Kenkichi Ishigure, Daisuke Hiroishi, Chihiro Matsuura
Nuclear Technology | Volume 106 | Number 2 | May 1994 | Pages 177-185
Technical Paper | Material | doi.org/10.13182/NT94-A34974
Articles are hosted by Taylor and Francis Online.
The current study addresses the needs for deeper understanding of the behavior of iron-nickel based corrosion product systems, particularly the mechanism of ion/oxide interaction, formation and dissolution of nonstoichiometric nickel ferrites, which are believed to be the key targets of the activity transport in the primary circuits of light water reactor systems. The interaction of Ni2+ ions with Fe3O4 particles was studied experimentally in the aqueous phase at 423 and 473 K by monitoring the concentrations of nickel and iron ions in the aqueous phase after the injection of nickel ion solutions to the magnetite particle dispersion system. Formations of NiO or NiFe2O4, as initial metastable states, depending on the amount of the injected Ni2+ ions, were observed in the experimental series. A systematic understanding of the interaction mechanism was achieved based on the methods of both the thermodynamic analyses and solid-state diffusion. A new approach was proposed to treat a set of metastable states of the system tending to reach its most stable equilibrium state under a given initial condition. It was concluded from the experimental results and the thermodynamic analyses that the formed systems are gradually transforming through changing their composition and number of solid phases to the most stable state defined only by one solid phase, NixFe3−xO4.