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The division's objectives are to promote the advancement of knowledge and understanding of the fundamental physical phenomena characterizing nuclear reactors and other nuclear systems. The division encourages research and disseminates information through meetings and publications. Areas of technical interest include nuclear data, particle interactions and transport, reactor and nuclear systems analysis, methods, design, validation and operating experience and standards. The Wigner Award heads the awards program.
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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.
M. Satishchandra Arya, M. Keyhani
Nuclear Science and Engineering | Volume 105 | Number 4 | August 1990 | Pages 391-403
Technical Paper | doi.org/10.13182/NSE90-A21473
Articles are hosted by Taylor and Francis Online.
An experimental study of natural convection heat transfer in a one-twelfth scaled model of a sealed storage cask of the Integral Monitored Retrievable Storage facility containing 12 canisters is performed. A uniform power dissipation per unit length is supplied to each canister (heater rod), and the cask (outer cylinder) is maintained at a constant temperature. Correlations representing the convective Nusselt number as a function of the Rayleigh number for each rod as well as one for the rod bundle as a whole are reported. Two outer cylinders in a vertical position with exactly the same dimensions, one with internal fins and the other without the fins, are used in these experiments. Comparisons of the heat transfer data obtained for these cylinders show that the conduction regime terminates at a much lower Rayleigh number in the case of the cylinder without internal fins. Moreover, the critical Rayleigh number (onset of convection) obtained for this case is in good agreement with the one predicted by a general correlation for square array rod bundles as reported previously. A significant result of the present study is that, once the rod bundles reach their respective convective flow regime, the heat transfer can be predicted with a single correlation. Using a recommended length scale, the correlation predicts the convective Nusselt number for all the available rod bundle data (present and previously reported results) with an average deviation of 7.2%.