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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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Fusion Science and Technology
Latest News
Construction begins on Kairos’s fluoride salt–cooled test reactor
Earlier today, on a site in Oak Ridge, Tenn., that was formerly home to the K-33 Gaseous Diffusion Plant, Kairos Power marked the start of construction on its low-power demonstration reactor. Named Hermes, the 35-MWt test reactor claims status as the first Gen IV reactor to be approved for construction by the Nuclear Regulatory Commission and the first non–light water reactor to be permitted in the United States in more than 50 years.
Akira Oikawa, Naoyuki Miya, Kozo Kodama, Takashi Umehara, Takeshi Yamazaki, Kei Masaki, Isamu Akiyama, Kozo Matsushita, Nobuyuki Hosogane
Fusion Science and Technology | Volume 41 | Number 3 | May 2002 | Pages 612-616
Device, Facility, and Operation | Proceedings of the Sixth International Conference on Tritium Science and Technology Tsukuba, Japan November 12-16, 2001 | doi.org/10.13182/FST02-A22661
Articles are hosted by Taylor and Francis Online.
Effluent of tritium in vacuum exhaust in JT-60 through the stack to environment always remains a level below detectable level (<10−5Bq/cm3 at the stack, <10−7Bq/cm3 at the site boundary). Though tritium concentration of drain water is below the limit of regulations of the local agreement and the law, small tritium contamination in the facility drain and in the rain drain of stack appeared occasionally. For a scheduled maintenance work of the in-vessel components, following an annual deuterium plasma discharge campaign, a 4-week no-deuterium (H or He) plasma discharge campaign and the succeeded ventilation by room air allow to reduce tritium on the interior surface of in-vessel components. This cleaning up shots and air introduction allowed workers to enter into the vacuum vessel. Air blow well tends to remove surface tritium elements and would be necessary before disassembly and replacement of components on vacuum pumping lines.