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
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
Utility Working Conference and Vendor Technology Expo (UWC 2024)
August 4–7, 2024
Marco Island, FL|JW Marriott Marco Island
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 2024
Jan 2024
Latest Journal Issues
Nuclear Science and Engineering
August 2024
Nuclear Technology
Fusion Science and Technology
Latest News
Vogtle-3 shuts down for valve issue
One of the new Vogtle units in Georgia was shut down unexpectedly on Monday last week for a valve issue that has since been investigated and repaired. According to multiple local news outlets, Georgia Power reported on July 17 that Unit 3 was back in service.
Southern Company spokesperson Jacob Hawkins confirmed that Vogtle-3 went off line at 9:25 p.m. local time on July 8 “due to lowering water levels in the steam generators caused by a valve issue on one of the three main feedwater pumps.”
Su-Jong Yoon, Gilles J. Youinou (INL)
Proceedings | Advances in Thermal Hydraulics 2018 | Orlando, FL, November 11-15, 2018 | Pages 482-492
The Computational Fluid Dynamics (CFD) modeling of wire-wrapped fuel assembly is challenging due to the geometric complexity and many contacts between the wire and fuel rod. To obtain the reliable and accurate predictions in pressure drop, velocity and temperature fields of wire-wrapped geometry, the uncertainty of CFD model should be identified and minimized. The present study conducted the sensitivity tests of pressure drop, velocity and temperature profile to the mesh density, boundary layer mesh and turbulence model by employing a commercially available CFD software, STAR-CCM+ version 12.06.010. The fluid-only and conjugate heat transfer models with 7-pin fuel assembly were adopted to find the baseline model parameters for the full geometry modeling with 217 pins. The CFD results show that the size of mesh and presence of boundary layer mesh play an important role in predictions of the pressure drop. The effects of mesh size, boundary layer mesh and turbulence model on the peak temperature of fluid and cladding wall were not significant. The fluid-only model with closed-gap approach could overestimate the peak temperature around the contacts.