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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. F. Dowling, B. M. Ip, S. I. Abdel-Khalik
Nuclear Science and Engineering | Volume 113 | Number 4 | April 1993 | Pages 300-313
Technical Paper | doi.org/10.13182/NSE93-A15330
Articles are hosted by Taylor and Francis Online.
Results are presented from laboratory experiments that examined the ability of dilute aqueous solutions of polyfethylene oxide) (PEO), a soluble drag-reducing polymer, to suppress spontaneous vapor explosions of molten tin. Polyfethylene oxide) with an average molecular weight of 4 x106 was used to prepare aqueous solutions with polymer concentrations from 10 weight parts per million (wppm) up to ≈525 wppm, with resulting solution viscosity ratios of 1.01 ≥ ηr ≥ 2.00 at 25°C, where ηr = ηsolution/ηwater. Twelve-gram masses of molten tin at temperatures of 600, 700, 800, 900, and 1000°C were poured from a height of 60 cm into a cylindrical Plexiglas vessel (12.5-cm i.d.) containing 1l of coolant solution at 25°C. The experiment was repeated ten times with each solution to check consistency and repeatability. The maximum pressures recorded for each experiment are reported and are used to compare the relative violence of spontaneous vapor explosions in each solution., Experiments with pure water were carried out to provide a reference of comparison for the polymer solutions. The peak pressures measured in the most dilute PEO solutions (1.02 ≥ ηr ≥ 1.13) spanned a much wider range than those for water, and pressures many times larger than any recorded in pure water were recorded—up to 240 kPa. When the solution viscosity ratio was 1.25 or larger, however, spontaneous explosions were markedly suppressed; above ηr = 2.00, they were entirely eliminated.