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Division Spotlight
Materials Science & Technology
The objectives of MSTD are: promote the advancement of materials science in Nuclear Science Technology; support the multidisciplines which constitute it; encourage research by providing a forum for the presentation, exchange, and documentation of relevant information; promote the interaction and communication among its members; and recognize and reward its members for significant contributions to the field of materials science in nuclear technology.
Meeting Spotlight
Conference on Nuclear Training and Education: A Biennial International Forum (CONTE 2025)
February 3–6, 2025
Amelia Island, FL|Omni Amelia Island Resort
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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Nuclear Science and Engineering
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Nuclear Technology
Fusion Science and Technology
Latest News
A more open future for nuclear research
A growing number of institutional, national, and funder mandates are requiring researchers to make their published work immediately publicly accessible, through either open repositories or open access (OA) publications. In addition, both private and public funders are developing policies, such as those from the Office of Science and Technology Policy and the European Commission, that ask researchers to make publicly available at the time of publication as much of their underlying data and other materials as possible. These, combined with movement in the scientific community toward embracing open science principles (seen, for example, in the dramatic rise of preprint servers like arXiv), demonstrate a need for a different kind of publishing outlet.
K. Yamamoto, T. Sakashita, K. Miyamoto
Fusion Science and Technology | Volume 48 | Number 1 | July-August 2005 | Pages 500-503
Technical Paper | Tritium Science and Technology - Containment, Safety, and Environment | doi.org/10.13182/FST05-A975
Articles are hosted by Taylor and Francis Online.
In order to predict tritium concentration at ground level near a nuclear site, a conceivable process for tritium transfer in the natural ecosystem must be traced. We developed an Easy Evaluation System for Atmospheric Dispersion (EESAD) code based on the random walk method (RWM) for calculation of the atmospheric dispersion of tritium. The code can deal with the hourly change of weather conditions and tritium release rates as are mainly observed in an accidental release. In order to validate its prediction accuracy, and to verify its effectiveness, we calculated using scenario 3 (constant release) and scenario 4.2 (intermittent release)supplied by BIOMASS (Biosphere Modeling and Assessment) program by IAEA. Tritium concentrations predicted by EESAD calculation agreed well with those observed. Tritium deposition from the plume (dry and wet), re-emission from the soil surface, and infiltration to the lower soil layers were all considered in the EESAD system, and found to be effective to get better agreement. The EESAD is useful for calculating not only a controlled constant release with meteorological changes but also an instantaneous release with hourly changes of the release conditions.
