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Fuel Cycle & Waste Management
Devoted to all aspects of the nuclear fuel cycle including waste management, worldwide. Division specific areas of interest and involvement include uranium conversion and enrichment; fuel fabrication, management (in-core and ex-core) and recycle; transportation; safeguards; high-level, low-level and mixed waste management and disposal; public policy and program management; decontamination and decommissioning environmental restoration; and excess weapons materials disposition.
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2024 ANS Winter Conference and Expo
November 17–21, 2024
Orlando, FL|Renaissance Orlando at SeaWorld
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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.
Rouyentan Farhadieh
Nuclear Science and Engineering | Volume 77 | Number 1 | January 1981 | Pages 84-91
Technical Paper | doi.org/10.13182/NSE81-A21341
Articles are hosted by Taylor and Francis Online.
An experimental study of the melting of a vertical surface of a solid by a heated liquid pool of various densities was conducted. The heat transfer mode in the external fluid was by natural turbulent thermal convection. After the onset of melting, although the two media were miscible, the melt and external fluid did not intermix along their mutual vertical interface when densities of the two media were different. The melt flowed upward when the liquid pool was heavier, and downward otherwise. For these cases, the heat transfer to the solid surface was controlled by the flow of the melt layer. As the density of the liquid pool approached that of the melt, the melting rate decreased, assuming a minimum at a liquid-melt density ratio, ρ*, of about one. For ρ* < 1.1, the convective currents within the liquid pool became increasingly effective in the removal of the melt. The mixing of the two media increased, with maximum mixing occurring at ρ* ≈ 1. For this case, convection currents in the liquid pool became the controlling heat transfer mechanism.