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Division Spotlight
Radiation Protection & Shielding
The Radiation Protection and Shielding Division is developing and promoting radiation protection and shielding aspects of nuclear science and technology — including interaction of nuclear radiation with materials and biological systems, instruments and techniques for the measurement of nuclear radiation fields, and radiation shield design and evaluation.
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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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.”
Kazuyuki Takase
Fusion Science and Technology | Volume 34 | Number 3 | November 1998 | Pages 930-935
Plasma Facing Components Technology (Poster Session) | doi.org/10.13182/FST98-A11963732
Articles are hosted by Taylor and Francis Online.
An analytical study of the turbulent heat transfer in the helium-cooling porous channels for fusion reactors was performed using a direct-simulation numerical approach with no empirical correlations such as the Darcy's law and effective thermal conduction in the porous media. A numerical analysis code for the helium-cooling porous channels was developed and preliminary numerical analyses were carried out. A new porous calculation model was proposed. The porous media was simulated as cubic solids and the direct-contact thermal conduction in the channel was simulated using solid bars. From the numerical analysis results, it was identiñed that the present porous model is useful to predict the turbulent heat transfer characteristics in the helium-cooling porous channel.