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.
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
2024 ANS Winter Conference and Expo
November 17–21, 2024
Orlando, FL|Renaissance Orlando at SeaWorld
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
Sep 2024
Jan 2024
Latest Journal Issues
Nuclear Science and Engineering
November 2024
Nuclear Technology
October 2024
Fusion Science and Technology
Latest News
Tank waste operations resume at Idaho’s IWTU
The Department of Energy’s Office of Environmental Management announced yesterday that waste processing operations have resumed at the Integrated Waste Treatment Unit (IWTU) at the Idaho National Laboratory Site. The resumption of operations follows the completion of two maintenance campaigns at the radioactive liquid waste treatment facility.
K. Hara, K. Munakata, T. Wajima, K. Wada, T. Takeishi, M. Tanaka, T. Uda
Fusion Science and Technology | Volume 60 | Number 4 | November 2011 | Pages 1339-1342
Detritiation and Isotope Separation | Proceedings of the Ninth International Conference on Tritium Science and Technology (Part 2) | doi.org/10.13182/FST11-A12677
Articles are hosted by Taylor and Francis Online.
Recovery of tritium released into working areas in nuclear fusion plants is a key issue for safety. A large volume of air in the last confinement of fusion power plants should be processed by air cleanup system (ACS). In ACS, tritium gas is oxidized by catalysts, and then tritiated water vapor is collected by adsorbents. This method can remove tritium effectively, whereas high throughput of air causes higher pressure loss in catalyst and adsorbent beds. The pressure loss can be reduced by replacing the packed bed of catalysts with the honeycomb catalysts. In this study, the oxidation experiments of hydrogen in humid gases over honeycomb-type catalysts were performed, and the influence of water vapor on the rate of catalytic oxidation was investigated. The result of the experiments suggests that the rate of catalytic oxidation decreases with increasing water vapor content and its influence varies depends on the temperature. It is also indicated the rate of oxidation substantially decreases at the lower temperatures even in the case where water vapor contents is considerably lower. Therefore, it is necessary to consider the decrease in the catalytic activity by coexistent water vapor.