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Conference Spotlight
Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
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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Powering the future: How the DOE is fueling nuclear fuel cycle research and development
As global interest in nuclear energy surges, the United States must remain at the forefront of research and development to ensure national energy security, advance nuclear technologies, and promote international cooperation on safety and nonproliferation. A crucial step in achieving this is analyzing how funding and resources are allocated to better understand how to direct future research and development. The Department of Energy has spearheaded this effort by funding hundreds of research projects across the country through the Nuclear Energy University Program (NEUP). This initiative has empowered dozens of universities to collaborate toward a nuclear-friendly future.
Bernard I. Spinrad, Zekeriya Altaç
Nuclear Science and Engineering | Volume 106 | Number 4 | December 1990 | Pages 480-488
Technical Paper | doi.org/10.13182/NSE90-A23772
Articles are hosted by Taylor and Francis Online.
The SKN approximation is slightly altered to solve the integral transport equation for heterogeneous systems. The original formulation of the SKN approximation has a defect when applied to heterogeneous problems. We propose a correction technique for such problems, which can also be applied to problems with P1 scattering. Such modified SKN equations are derived and tested for benchmark problems in one-dimensional geometries, which contain strong heterogeneities. Two-dimensional heterogeneous problems are solved using the unaltered SKN method with naive boundary conditions to determine how much heterogeneity can be tolerated before the remedy is necessary.
