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Division Spotlight
Isotopes & Radiation
Members are devoted to applying nuclear science and engineering technologies involving isotopes, radiation applications, and associated equipment in scientific research, development, and industrial processes. Their interests lie primarily in education, industrial uses, biology, medicine, and health physics. Division committees include Analytical Applications of Isotopes and Radiation, Biology and Medicine, Radiation Applications, Radiation Sources and Detection, and Thermal Power Sources.
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
Taking shape: Fusion energy ecosystems built with public-private partnerships
It’s possible to describe fusion in simple terms: heat and squeeze small atoms to get abundant clean energy. But there’s nothing simple about getting fusion ready for the grid.
Private developers, national lab and university researchers, suppliers, and end users working toward that goal are developing a range of complex technologies to reach fusion temperatures and pressures, confounded by science and technology gaps linked to plasma behavior; materials, diagnostics, and electronics for extreme environments; fuel cycle sustainability; and economics.
Yasunori Iwai, Yuki Edao, Katsumi Sato
Fusion Science and Technology | Volume 72 | Number 3 | October 2017 | Pages 516-522
Technical Note | doi.org/10.1080/15361055.2017.1330624
Articles are hosted by Taylor and Francis Online.
Technical reliability of tritium confinement shall be elevated taking hypothetic extraordinary situations occurred in a nuclear fusion facility such as events of fire and loss of electric power fully into consideration in order to enhance public acceptance of a nuclear fusion reactor. Considerable attention has been paid to the research of passive tritium conversion in the research field of detritiation system. Demonstration of detritiation to grasp the dynamic behavior is practically important to enhance the tritium confinement. In this study, passive detritiation of a 12 [m3] container was demonstrated with hydrophobic catalyst packed in a catalytic reactor. Initial tritium concentration in the container was 1.0 [GBq/m3]. The volume of hydrophobic catalyst packed in the passive catalytic reactor was 1000 [cm3]. The flow rate was set to 2.4 [Nm3/h] which is equivalent to atmosphere exchange rate of 5 times per day. The tritium concentration in the container successfully decreased two order magnitude after 23 hours processing. The conversion rate of tritium by passive catalytic reactor was initially 99.1 [%] and it decreased gradually with an increase in processing time. The rate fell to 70.7 [%] after 23 hours processing due mainly to the effect of hydrogen concentration on conversion efficiency. Unreacted amount of tritium passed through the passive catalytic reactor was less than 4.8 [%] of initial tritium amount. We have confirmed that the passive tritium oxidation is feasible with the hydrophobic platinum catalyst even in the presence of moisture.