ANS is committed to advancing, fostering, and promoting the development and application of nuclear sciences and technologies to benefit society.
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Division Spotlight
Education, Training & Workforce Development
The Education, Training & Workforce Development Division provides communication among the academic, industrial, and governmental communities through the exchange of views and information on matters related to education, training and workforce development in nuclear and radiological science, engineering, and technology. Industry leaders, education and training professionals, and interested students work together through Society-sponsored meetings and publications, to enrich their professional development, to educate the general public, and to advance nuclear and radiological science and engineering.
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.
Gary R. Smolen, Sidney R. Bierman, Nobuo Fukumura
Nuclear Technology | Volume 107 | Number 3 | September 1994 | Pages 285-303
Technical Paper | Nuclear Criticality Safety | doi.org/10.13182/NT94-A35009
Articles are hosted by Taylor and Francis Online.
Critical experiments were conducted with organic- and water-moderated arrays of mixed plutonium and uranium oxide fuel pins. The organic solution consisted of 32 vol% tributyl phosphate and 68 vol% normal paraffin hydrocarbon. The square lattice pitches ranged from 0.761 to 1.935 cm. A direct comparison between the reactivity of the two systems was not possible, because most of the experiments conducted with water were performed ∼7yr before the organic solution experiments. At the two lattice pitches where a direct comparison could be made, based on the number of fuel pins required for criticality, it was determined that the reactivity of the water-moderated system was the same or slightly higher than the organic-moderated system. These data were used in calculational studies performed independently at the Oak Ridge National Laboratory (ORNL) and the Power Reactor and Nuclear Fuel Development Corporation of Japan (PNC) with the KENO-IV computer code. A 27-energy-group cross-section library derived from the Evaluated Nuclear Data File B-Version IV (ENDF/B-IV) was used in both studies. The results of these analyses are in good agreement with the experimental results with calculated keff’s ranging from 0.991 to 1.014. The average calculated keff’s based on the ORNL and PNC analyses were 1.001 and 1.004, respectively. No trends in calculated keff with any parameters were identified.