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Fusion Energy
This division promotes the development and timely introduction of fusion energy as a sustainable energy source with favorable economic, environmental, and safety attributes. The division cooperates with other organizations on common issues of multidisciplinary fusion science and technology, conducts professional meetings, and disseminates technical information in support of these goals. Members focus on the assessment and resolution of critical developmental issues for practical fusion energy applications.
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Utility Working Conference and Vendor Technology Expo (UWC 2024)
August 4–7, 2024
Marco Island, FL|JW Marriott Marco Island
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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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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.”
Masabumi Nishikawa, Ken-ichi Tanaka, Mitsuru Uetake
Fusion Science and Technology | Volume 28 | Number 4 | November 1995 | Pages 1738-1748
Technical Paper | Tritium System | doi.org/10.13182/FST95-A30438
Articles are hosted by Taylor and Francis Online.
The tritium bred in a deuterium-tritium fusion reactor is removed from its blanket by using helium sweep gas. From the viewpoint of adsorption capacity and pressure of tritium at release, a cryosorption bed, which uses molecular sieves or activated carbon at the temperature of liquid nitrogen, is attractive for the recovery of this tritium. The mass transfer coefficients required to predict the breakthrough curve are experimentally discussed. The overall mass transfer coefficient KFav in the cryosorption of hydrogen isotopes on molecular sieves or activated carbon at 77 K consists of a mass transfer coefficient that represents the transfer from the bulk gas flow to the surface of the adsorbent through the boundary layer kfav, a mass transfer coefficient that represents the axial dispersion in the packed bed kzav and a mass transfer coefficient that represents the intraparticle diffusion through micro pores in the adsorbent particle βksav. The value of βksav is confirmed to be 1 to 50 s−1, which decreases with an increase of hydrogen partial pressure, and the rate-controlling step is βksav when the hydrogen partial pressure is higher than several hundred pascals, and kzav becomes the rate-controlling step when the hydrogen partial pressure is low and gas velocity is slow. The dependence of KFav on hydrogen isotopes and adsorbents appears to be small under the current experimental conditions.