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Division Spotlight
Decommissioning & Environmental Sciences
The mission of the Decommissioning and Environmental Sciences (DES) Division is to promote the development and use of those skills and technologies associated with the use of nuclear energy and the optimal management and stewardship of the environment, sustainable development, decommissioning, remediation, reutilization, and long-term surveillance and maintenance of nuclear-related installations, and sites. The target audience for this effort is the membership of the Division, the Society, and the public at large.
Meeting Spotlight
International Conference on Mathematics and Computational Methods Applied to Nuclear Science and Engineering (M&C 2025)
April 27–30, 2025
Denver, CO|The Westin Denver Downtown
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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Latest News
Argonne’s METL gears up to test more sodium fast reactor components
Argonne National Laboratory has successfully swapped out an aging cold trap in the sodium test loop called METL (Mechanisms Engineering Test Loop), the Department of Energy announced April 23. The upgrade is the first of its kind in the United States in more than 30 years, according to the DOE, and will help test components and operations for the sodium-cooled fast reactors being developed now.
Nora Nassiri-Mofakham, Mojtaba Kakaei
Nuclear Technology | Volume 210 | Number 11 | November 2024 | Pages 2151-2158
Research Article | doi.org/10.1080/00295450.2024.2311977
Articles are hosted by Taylor and Francis Online.
Waste from resource extraction industries contains uranium and thorium decay chain radionuclides. One important radiological impact of these wastes is the release of radon into the atmosphere. Therefore, the prediction/evaluation of radon flux and the effectiveness of different covers are the major elements in radiation protection, long-term safety aspects, and the modeling of radon release into the environment for a final assessment of radiological impacts and required remediation actions. A measurement system has been designed based on the transient-diffusion method to evaluate radon exhalation by the short-time accumulation technique. The validity of the laboratory model to quickly estimate the radon release from soils, the diffusion coefficient, and the effect of covers was investigated. From the results obtained from the experimental model, it was observed that after a 0.5-m(1-m) cover layer, the radon flux reduction factor increases from 1.3(2.1) for sand to about 2(3) for clay. The results show that the effectiveness of the cover layer studied is 3, which is similar to theoretical and experimental results in uranium tailings ponds.