ANS is committed to advancing, fostering, and promoting the development and application of nuclear sciences and technologies to benefit society.
Explore the many uses for nuclear science and its impact on energy, the environment, healthcare, food, and more.
Explore membership for yourself or for your organization.
Conference Spotlight
Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
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!
Latest Magazine Issues
Jul 2025
Jan 2025
Latest Journal Issues
Nuclear Science and Engineering
September 2025
Nuclear Technology
August 2025
Fusion Science and Technology
Latest News
Deep geologic repository progress—2025 Update
Editor's note: This article has was originally published in November 2023. It has been updated with new information as of June 2025.
Outside my office, there is a display case filled with rock samples from all over the world. It contains a disk of translucent, orange salt from the Waste Isolation Pilot Plant near Carlsbad, N.M.; a core of white-and-bronze gneiss from the site of the future deep geologic repository in Eurajoki, Finland; several angular chunks of fine-grained, gray claystone from the underground research laboratory at Bure, France; and a piece of coarse-grained granite from the underground research tunnel in Daejeon, South Korea.
H. Moriyama, Y. Asaoka, Y. Ito
Fusion Science and Technology | Volume 19 | Number 3 | May 1991 | Pages 1046-1050
Blanket Technology | doi.org/10.13182/FST91-A29481
Articles are hosted by Taylor and Francis Online.
The rate of tritium recovery from liquid lithium by molten salt extraction was measured. The mass balance of tritium was always good during extraction and the overall mass transfer coefficient was evaluated. The dependences of the mass transfer coefficient on salt and temperature are explained by considering the predominant resistence to the mass transfer in the salt phase. The semi-empirical equation is given by KM* (cm/s) = 2.2×10−4(T(K)/µsalt (cp))1/2 where µsalt is the viscosity of salt.
The reference scheme of molten salt extraction is re-evaluated with the newly obtained data. Not only from the thermodynamic but also from the kinetic points of view, it is shown that a design goal of the tritium concentration of 1 wppm in lithium would be reached by combining a reasonable number of extractor units. A mixer-settler with mechanical stirrer may be sufficient for the extractor.