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
Human Factors, Instrumentation & Controls
Improving task performance, system reliability, system and personnel safety, efficiency, and effectiveness are the division's main objectives. Its major areas of interest include task design, procedures, training, instrument and control layout and placement, stress control, anthropometrics, psychological input, and motivation.
Meeting Spotlight
2024 ANS Annual Conference
June 16–19, 2024
Las Vegas, NV|Mandalay Bay Resort and Casino
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
May 2024
Jan 2024
Latest Journal Issues
Nuclear Science and Engineering
June 2024
Nuclear Technology
Fusion Science and Technology
Latest News
Proving DRACO will deliver
The United States is now closer than it has been in over five decades to launching the first nuclear thermal rocket into space, thanks to DRACO—the Demonstration Rocket for Agile Cislunar Orbit.
Massimo Zucchetti
Fusion Science and Technology | Volume 19 | Number 3 | May 1991 | Pages 852-856
Advanced Reactor | doi.org/10.13182/FST91-A29451
Articles are hosted by Taylor and Francis Online.
Three types of fusion reactors, based on DT, DD and DHe fuel cycles, are compared from the first wall neutron-induced radioactivity point of view. Some of the definitions of low-activity, based on hands-on recycling, remote recycling, “U.S.” shallow land burial and deep geological confinement waste management criteria, are discussed. A three-classes rank of low-activity is proposed. The analysis of the induced radioactivity in first-wall steels shows that the long-term activity remains at high levels in DD and DHe cases too. DD and DT first-wall steels can be classified in none of the above-mentioned low-activity classes. Neutron induced radioactivity in some of the main constituting elements for the first-wall varies, when turning from DT to DD or DHe irradiation conditions. This depends on the different ways by which the long-lived radioactive nuclides are produced. Materials selection and low-activation alloys development, in order to minimize activity, will be necessary also for the first walls of fusion reactors based on advanced fuel cycles.