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2025 ANS Winter Conference & Expo
November 9–12, 2025
Washington, DC|Washington Hilton
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Fusion Science and Technology
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.
J. E. Klein
Fusion Science and Technology | Volume 48 | Number 1 | July-August 2005 | Pages 59-62
Technical Paper | Tritium Science and Technology - Tritium Processing, Transportation, and Storage | doi.org/10.13182/FST05-A880
Articles are hosted by Taylor and Francis Online.
A new diffuser/permeator design has been proposed for a new Savannah River Site tritium project. The use of a single heaterwell in the center of the shell had raised concerns that the Pd/Ag coils may be shielding radiative heat transfer to the walls thus reducing Pd/Ag tube temperatures near the shell below the recommended minimum operating temperature.The diffuser was fitted with thermocouples to measure shell temperatures during testing. Tests were run with the shell evacuated, helium Feed flows of 0, 1000, and 2000 sccm; Bleed pressures ranging from 0 to 203 kPa, and heater temperatures of 650, 675, and 700°C. Hydrogen permeation tests were run with two hydrogen/helium mixtures and Feed rates to simulate 1st and 2nd stage diffuser operations.Approximately 20 hours were required to bring the diffuser from ambient temperature to steady-state conditions. For tests with a heater temperature of 675°C and no hydrogen flow, helium flow rate and pressure had little impact on the measured shell temperatures, the thermowell temperature, roughly 415°C, and altered heater output by only 11 watts. Conversely, controlling the thermowell temperature to 415°C during hydrogen permeation tests increased heater power output, lowered heater temperature, and increased shell temperatures. The tests showed the diffuser can perform its intended function with reasonable assurance that the Pd/Ag tubes were within the recommended temperature range.