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Latest News
IAEA again raises global nuclear power projections
Noting recent momentum behind nuclear power, the International Atomic Energy Agency has revised up its projections for the expansion of nuclear power, estimating that global nuclear operational capacity will more than double by 2050—reaching 2.6 times the 2024 level—with small modular reactors expected to play a pivotal role in this high-case scenario.
IAEA director general Rafael Mariano Grossi announced the new projections, contained in the annual report Energy, Electricity, and Nuclear Power Estimates for the Period up to 2050 at the 69th IAEA General Conference in Vienna.
In the report’s high-case scenario, nuclear electrical generating capacity is projected to increase to from 377 GW at the end of 2024 to 992 GW by 2050. In a low-case scenario, capacity rises 50 percent, compared with 2024, to 561 GW. SMRs are projected to account for 24 percent of the new capacity added in the high case and for 5 percent in the low case.
Sebahattin Ünalan, S. Orhan Akansu
Fusion Science and Technology | Volume 43 | Number 1 | January 2003 | Pages 110-121
Technical Paper | doi.org/10.13182/FST03-A252
Articles are hosted by Taylor and Francis Online.
Thermal and neutronic behavior of a peaceful nuclear explosion reactor (PACER) producing [approximately equal to]1.2 GWe electrical-power from fusion explosions in a cylindrical explosion chamber (radius = 30 m, height = 75 m) are analyzed. For determination of flibe mass (m) required for safe operation temperatures and pressures with enough tritium breeding ratio (TBR) and high M (fusion energy absorption ratio), neutronic calculations are carried out for different coolant zone positions (DR) and coolant zone thicknesses (DRc). Inlet pressure and temperatures (Tin) of flibe are 1 atm, and 823 and 1540 K.For all DR values, TBR and M reached saturation values of 1.27 and 1.07 at certain DRc values, respectively. Thereby, m increases with increased DR. To decrease flibe mass requirements, DR must be as low as possible. However, this causes high equilibrium pressures and enormous temperatures. Therefore, to decrease mechanical and chemical damages on the walls, DR must be high. The highest equilibrium pressures for the investigated parameters are [approximately equal to]100 and [approximately equal to]160 atm for Tin = 823 K and Tin = 1540 K, respectively. For the equilibrium temperature and pressures of 1750 K and [approximately equal to]20 atm, m and DR should be 3000 tonnes and 400 cm for Tin = 823 K, and 25000 tonnes and 700 cm for Tin = 1540 K.
