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Nuclear Criticality Safety
NCSD provides communication among nuclear criticality safety professionals through the development of standards, the evolution of training methods and materials, the presentation of technical data and procedures, and the creation of specialty publications. In these ways, the division furthers the exchange of technical information on nuclear criticality safety with the ultimate goal of promoting the safe handling of fissionable materials outside reactors.
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Utility Working Conference and Vendor Technology Expo (UWC 2024)
August 4–7, 2024
Marco Island, FL|JW Marriott Marco Island
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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.
Steven J. Manson, Dale E. Klein
Nuclear Technology | Volume 108 | Number 3 | December 1994 | Pages 379-386
Technical Paper | Radioactive Waste Management | doi.org/10.13182/NT94-A35020
Articles are hosted by Taylor and Francis Online.
Transportation of nuclear spent fuel is inevitable over the coming years. However, to ensure the safety of such transport, computational models must be established that are capable of evaluating the thermal characteristics of the containers in which spent fuel is shipped. In an effort to further the development of a satisfactory computational tool, researchers at The University of Texas at Austin have developed a numerical algorithm that utilizes a homogeneous equilibrium model to calculate the effects of two-phase water on the thermal performance of the containers. This model has been evaluated in preparation for its incorporation into TEXSAN, the Texas-Sandia thermal-hydraulic analysis program. In this study, a stream function vorticity formulation routine was employed in order to calculate single- and two-phase mass and energy transport in a simple driven cavity configuration. Furthermore, a simulation of boiling heat transfer and natural convection around an idealized hot wire was performed. The temperature, enthalpy, and velocity distributions were determined and compared favorably to experimental and numerical benchmark results. The stream function vorticity formulation of the homogeneous equilibrium model has thus been demonstrated to be a viable predictive tool, capable of analysis of two-phase multimode heat transfer. This establishes the potential for improved spent-fuel transportation analysis, which is required for ensuring the safety of shipping container designs.