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Explore the many uses for nuclear science and its impact on energy, the environment, healthcare, food, and more.
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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
Utility Working Conference and Vendor Technology Expo (UWC 2024)
August 4–7, 2024
Marco Island, FL|JW Marriott Marco Island
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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Fusion Science and Technology
Latest News
Taking shape: Fusion energy ecosystems built with public-private partnerships
It’s possible to describe fusion in simple terms: heat and squeeze small atoms to get abundant clean energy. But there’s nothing simple about getting fusion ready for the grid.
Private developers, national lab and university researchers, suppliers, and end users working toward that goal are developing a range of complex technologies to reach fusion temperatures and pressures, confounded by science and technology gaps linked to plasma behavior; materials, diagnostics, and electronics for extreme environments; fuel cycle sustainability; and economics.
D. J. Sherwood, C. L. Crawford, T. L. White, C. E. Duffey, T. B. Calloway
Nuclear Science and Engineering | Volume 158 | Number 1 | January 2008 | Pages 88-96
Technical Note | doi.org/10.13182/NSE08-A2741
Articles are hosted by Taylor and Francis Online.
Ventilation and mixing systems in the Hanford Waste Treatment and Immobilization Plant (WTP) are being designed to account for the flammable gas hydrogen that will form in process streams, just as it also does in the radioactive liquid wastes awaiting immobilization at the Hanford Tank Farms. Tank wastes forming hydrogen at the highest rates do so by reactions involving dissolved organic complexant compounds, even though hydrogen is also formed by the better known radiolysis pathway. Hydrogen generation rates (HGRs) are predicted with a correlation relating waste properties to reaction pathways involving radiolysis of water and the degradation of organic compounds. This correlation accounts only for aqueous phase reactions. An antifoam agent (AFA) will be added to waste processed in the WTP. This organic liquid mixture is immiscible in aqueous systems and will therefore form a nonaqueous phase liquid layer on the processed waste, unless some of its compounds are unstable in the hostile physical/chemical environment and break down into soluble degradation products. Dissolved organic species increase the organic source term in the WTP HGR correlation, but the correlation requires adaptation to address hydrogen formed from immiscible organic liquids. Here, we report our initial evaluation of the hydrogen formed by 60Co gamma irradiation of a waste simulant containing Dow Corning Q2-3183A AFA with an adapted WTP HGR correlation.