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Isotopes & Radiation
Members are devoted to applying nuclear science and engineering technologies involving isotopes, radiation applications, and associated equipment in scientific research, development, and industrial processes. Their interests lie primarily in education, industrial uses, biology, medicine, and health physics. Division committees include Analytical Applications of Isotopes and Radiation, Biology and Medicine, Radiation Applications, Radiation Sources and Detection, and Thermal Power Sources.
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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!
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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.
A. M. Gadalla and N. A. L. Mansour
Nuclear Science and Engineering | Volume 90 | Number 3 | July 1985 | Pages 320-329
Technical Paper | doi.org/10.13182/NSE85-A17773
Articles are hosted by Taylor and Francis Online.
Equilibrium relationships in the uranium-tungsten-oxygen system have been established as a function of temperature at different oxygen pressures. Isobaric sections in air and oxygen and at oxygen partial pressures of 0.01 and 0.07 were constructed, using the thermobalance. Mixtures of U3O8 and WO3 pick up weight in air, forming UWO6, which exists over a wide range of compositions taking both uranium oxides and WO3 in solid solution. The compound WO3 takes a limited amount of uranium oxide in solid solution and U3O8 also dissolves a limited amount of W03. The miscibility gap between the solid solutions of UWO6-x and U3O8-y on the one hand and the solid solutions of UWO6-x and WO3-z on the other hand decreases by decreasing oxygen partial pressure and/or by increasing temperature. Each group of compatible solutions finally merges into a single phase deficient in oxygen. The two single phases exist over a wide range of compositions and melt over ranges of temperatures depending on the initial composition. Above a critical oxygen partial pressure (between 0.01 and 0.07 atm), solid solutions of UWO6-x and U3O8-y, as well as solid solutions of UWO6-x and WO3-z, melt partially with isothermal oxygen loss. Increasing the oxygen partial pressure increases the melting temperatures and produces eutectic liquids richer in oxygen.