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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
ANS Student Conference 2025
April 3–5, 2025
Albuquerque, NM|The University of New Mexico
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
Norway’s Halden reactor takes first step toward decommissioning
The government of Norway has granted the transfer of the Halden research reactor from the Institute for Energy Technology (IFE) to the state agency Norwegian Nuclear Decommissioning (NND). The 25-MWt Halden boiling water reactor operated from 1958 to 2018 and was used in the research of nuclear fuel, reactor internals, plant procedures and monitoring, and human factors.
Min Seop Song, Eung Soo Kim (Seoul Natl Univ), Jae Ho Jeong (KAERI)
Proceedings | Advances in Thermal Hydraulics 2018 | Orlando, FL, November 11-15, 2018 | Pages 531-546
The wire-wrapped pin bundle is the most commonly adopted form of the fuel assembly in SFRs. It is challenging to measure the local flow velocity field experimentally because of its narrow channel and complex internal shape. In this study, the refractive indices of the fluid and the test-section are matched and the flow field in the SFR wire-wrapped 19-pin bundle is visualized using optical measurement techniques such as PIV/LDV and compared with the RANS-based computational fluid dynamic (CFD) analysis. According to the turbulence intensity and the pressure drop measurements, it is observed that the flow regime changes from the transition regime to the fully turbulent regime when the Re number is more than 13,000. In addition, the pressure drop measurement results are compared with the CFD analysis for various turbulence models, and it is found that the BSL-RSM model predicts the experimental results the most accurately. The velocity distribution obtained in the edge sub-channel using PIV is also compared with the CFD results. As a result, the flow and vortex shapes are very similar to each other qualitatively. However, some discrepancies are observed quantitatively in the region where the channel thickness is narrow. The main reason is considered to be attributed to the pin location error, the refraction of light and the velocity averaging due to the thickness of the laser sheet incident on the thin channel during the experiment. Further investigation is on-going for analysis of flow in interior subchannel.
