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Division Spotlight
Materials Science & Technology
The objectives of MSTD are: promote the advancement of materials science in Nuclear Science Technology; support the multidisciplines which constitute it; encourage research by providing a forum for the presentation, exchange, and documentation of relevant information; promote the interaction and communication among its members; and recognize and reward its members for significant contributions to the field of materials science in nuclear technology.
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!
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Jul 2024
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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.”
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.