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Division Spotlight
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.
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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Nuclear Science and Engineering
May 2025
Nuclear Technology
April 2025
Fusion Science and Technology
Latest News
General Kenneth Nichols and the Manhattan Project
Nichols
The Oak Ridger has published the latest in a series of articles about General Kenneth D. Nichols, the Manhattan Project, and the 1954 Atomic Energy Act. The series has been produced by Nichols’ grandniece Barbara Rogers Scollin and Oak Ridge (Tenn.) city historian David Ray Smith. Gen. Nichols (1907–2000) was the district engineer for the Manhattan Engineer District during the Manhattan Project.
As Smith and Scollin explain, Nichols “had supervision of the research and development connected with, and the design, construction, and operation of, all plants required to produce plutonium-239 and uranium-235, including the construction of the towns of Oak Ridge, Tennessee, and Richland, Washington. The responsibility of his position was massive as he oversaw a workforce of both military and civilian personnel of approximately 125,000; his Oak Ridge office became the center of the wartime atomic energy’s activities.”
Technical Session|Computational Thermal Hydraulics
Monday, August 21, 2023|3:30–5:10PM EDT|Columbia 11/12
Session Chair:
Jack Buchanan (UNNPP)
Alternate Chair:
Ed Komen (Nuclear Research & Consultancy Group)
Session Organizer:
Igor A. Bolotnov
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CFD Evaluation of Spacer Induced Droplet Deposition in BWR Subchannels
3:30–3:50PM EDT
Chao Wang (Framatome), Steven Anderson (Framatome), Markus Rehm (Framatome), Olga Dutkiewicz (Framatome), Elmar Rieder (Framatome), Lukas Robers (Axpo Power AG)
Paper
Numerical Simulation of Corium Flow Through Rod Bundle and/or Debris Bed Geometries with a Model Based on Lattice Boltzmann Method
3:50–4:10PM EDT
J. Garcia Sarmiento (IRSN), F. Fichot (IRSN), V. Topin (IRSN), P. Sagaut (Aix-Marseille Univ.)
Prediction of the Flow Patterns in a Steam Generator Tube Bundle Configuration with All-Flow-Regime CFD Models
4:10–4:30PM EDT
Marco Colombo (Univ. Sheffield), Daniele Vivaldi (IRSN), Jean Baccou (IRSN)
Numerical Investigation of Two-Phase Flow in a 3 x 3 Rod Bundle with Spacer Grid
4:30–4:50PM EDT
S. Taş (Helmholtz-Zentrum Dresden-Rossendorf), Y. Liao (Helmholtz Zentrum-Dresden Rossendorf), U. Hampel (Helmholtz Zentrum-Dresden Rossendorf)
Development of Solids Transport Model for Fuel Dispersal Studies
4:50–5:10PM EDT
Avinash Moharana (Rensselaer Polytechnic Institute), Shanbin Shi (Rensselaer Polytechnic Institute)
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