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.
Explore membership for yourself or for your organization.
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!
Latest Magazine Issues
Jul 2025
Jan 2025
Latest Journal Issues
Nuclear Science and Engineering
August 2025
Nuclear Technology
Fusion Science and Technology
Latest News
The value of recycled U and Pu brings Standard Nuclear and Shine together
Shine Technologies has been developing fusion-adjacent technologies in Janesville, Wis., including nuclear fuel recycling, since its founding in 2005. Standard Nuclear of Oak Ridge, Tenn., was formed just last year but holds a TRISO fuel production technology backed by years of research and development since it acquired Ultra Safe Nuclear’s fuel manufacturing assets after that company’s bankruptcy in October 2024. Now, Shine and Standard Nuclear have announced plans to work together on a “strategic partnership to advance nuclear fuel recycling and U.S. fuel security.”
Rohan Biwalkar, Sola Talabi (Pittsburgh Technical)
Proceedings | Advances in Thermal Hydraulics 2018 | Orlando, FL, November 11-15, 2018 | Pages 989-1002
An Integrated Small Modular Reactor is an Integral Pressurized-Water Reactor (iPWR) with a relatively high surface-area-to-volume ratio. It has been hypothesized that a higher surface-area-to-volume ratio aids passive aerosol decontamination through various deposition phenomena, namely thermophoresis, diffusiophoresis and gravitational settling. Accordingly, particle deposition was studied within a range of thermal-hydraulic parameters, namely pressure, temperature and A/V ratios, in the presence as well as the absence of steam. It was found that presence of steam, an increasing thermal gradient between the Reactor Vessel (RV) and Containment Vessel (CV) walls, an increasing A/V ratio, and an increasing initial pressure enhance particle deposition. As part of this study, a Computational Fluid Dynamics (CFD) model with the capability to predict particle deposition, particle velocities and steam condensation was developed using User-Defined Functions for the 3-D CFD commercial code CONVERGE. It was found that the CFD results qualitatively agreed with the experimental data in the context of predicting particle deposition with respect to varying thermal-hydraulic parameters. Overall, the aerosol removal mechanisms are sensitive to varying thermal-hydraulic parameters.