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Division Spotlight
Operations & Power
Members focus on the dissemination of knowledge and information in the area of power reactors with particular application to the production of electric power and process heat. The division sponsors meetings on the coverage of applied nuclear science and engineering as related to power plants, non-power reactors, and other nuclear facilities. It encourages and assists with the dissemination of knowledge pertinent to the safe and efficient operation of nuclear facilities through professional staff development, information exchange, and supporting the generation of viable solutions to current issues.
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.
Sandor Benedek
Nuclear Technology | Volume 105 | Number 2 | February 1994 | Pages 201-215
Technical Paper | Heat Transfer and Fluid Flow | doi.org/10.13182/NT94-A34923
Articles are hosted by Taylor and Francis Online.
General scaling laws for transient two-fluid flow heated by a rod are presented. The similarity of these processes can be ensured only by applying the same volume and time scale with identical model parameters. In practice, the requirement of similar interfacial friction terms cannot be fulfilled because of volume (diameter) reducing scale. Numerical examples show remarkable deviations between the state variables (the values of slip) of the prototype and those of the scaled model, especially with unsteady flow rates. The deviation becomes significant when the slip of phase velocities exceeds the range of 1.6 to 1.8. Volume and time scaling can be carried out only if the phase velocities are similar (slip equal to ∼1 in the quasi-homogeneous flow model). Maintenance of the similarity of heat transfer processes of a heated fuel rod may necessitate time scaling. Furthermore, numerical examples are presented for a scale model of a prototype pressurized water reactor, employing the time-scaled homogeneous flow model.