ANS is committed to advancing, fostering, and promoting the development and application of nuclear sciences and technologies to benefit society.
Explore the many uses for nuclear science and its impact on energy, the environment, healthcare, food, and more.
Division Spotlight
Mathematics & Computation
Division members promote the advancement of mathematical and computational methods for solving problems arising in all disciplines encompassed by the Society. They place particular emphasis on numerical techniques for efficient computer applications to aid in the dissemination, integration, and proper use of computer codes, including preparation of computational benchmark and development of standards for computing practices, and to encourage the development on new computer codes and broaden their use.
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!
Latest Magazine Issues
Apr 2025
Jan 2025
Latest Journal Issues
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.”
Peter Yarsky, Kevin Coyne, Cynthia Taylor, Chad Oelstrom
Nuclear Technology | Volume 211 | Number 2 | February 2025 | Pages 358-376
Research Article | doi.org/10.1080/00295450.2024.2326375
Articles are hosted by Taylor and Francis Online.
Risk plus Some Attributes (R + SA) is a method that risk informs the prioritization of inspection activities related to new fuel cycle facility construction. The method uses information available in the Integrated Safety Analysis (ISA) summary to compute the risk-informed importance score of each item relied on for safety (IROFS) referenced in the ISA summary. The approach is based on approximating the risk for each accident sequence and then apportioning that risk to IROFSs associated with that sequence. Once the IROFS risk-informed importance score is computed, the importance score can be adjusted to account for other factors besides the risk. These other factors capture attributes of the IROFSs that affect the prioritization they should receive for inspection. An example of an attribute is the complexity of the IROFSs; complex as opposed to simple IROFSs warrant a higher inspection priority. This paper provides a description of the theoretical and mathematical framework of the R + SA methodology.
