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 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
Aug 2024
Jan 2024
Latest Journal Issues
Nuclear Science and Engineering
October 2024
Nuclear Technology
Fusion Science and Technology
August 2024
Latest News
New laws offer nuclear industry incentives for existing power plant uprates
This year, the U.S. nuclear industry received a much-needed economic boost that could help preserve operating nuclear power plants and incentivize upgrades that extend their lifespan and power output.
Signed into law in 2022, the Inflation Reduction Act offers production tax credits (PTCs) for existing nuclear power plants and either PTCs or investment tax credits (ITCs) for new carbon-free generation. These credits could make power uprates—increasing the maximum power level at which a commercial plant may operate—a much more appealing option for utilities.
Alan J. Markworth
Nuclear Science and Engineering | Volume 49 | Number 4 | December 1972 | Pages 506-507
Technical Notes | doi.org/10.13182/NSE72-A22570
Articles are hosted by Taylor and Francis Online.
A simple model for the gas-diffusion-controlled growth of stationary gas bubbles in an isothermal solid, under constant rate of gas generation, is used to evaluate the temperature dependence of fission-gas swelling in uranium monocarbide. Using experimental data for the temperature-dependent volume diffusivity of xenon in uranium carbide, it is found that the predicted temperature at which the onset of fission-gas swelling occurs, evaluated at a given fission density, correlates relatively well with swelling data and is of the order of one-half the absolute melting point. Variations of bubble concentration and gas-generation rate are found to affect this predicted swelling-onset temperature only to a relatively slight extent.