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Conference Spotlight
2025 ANS Winter Conference & Expo
November 9–12, 2025
Washington, DC|Washington Hilton
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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.
Eun-Hye Lee, Hoe-Yeol Kim, Dong-Wook Jerng (Chung-Ang Univ), Tae Woon Kim (KAERI)
Proceedings | 2018 International Congress on Advances in Nuclear Power Plants (ICAPP 2018) | Charlotte, NC, April 8-11, 2018 | Pages 310-317
When a severe accident occurs, steam, hydrogen, non-condensable gas, and radioactive materials are generated and released from reactor coolant system (RCS) to containment atmosphere resulting in increase of containment pressure. The generation of steam and noncondensable gas could affect containment integrity which is a final barrier of radioactivity release. To prevent overpressurization of containment and to reduce the amount of radionuclides release to the environment, the concept of Filtered Containment Venting System (FCVS) is adopted. However, the operation of FCVS is needed to be careful because it emits radioactive materials into the atmosphere which can affect to the public and environment ultimately. Especially, the Cesium (Cs) could have a major impact on human health and ground contamination. In addition, the effects of FCVS differs depending on accident scenarios and venting strategies. Therefore, in this paper, the effects of FCVS operating strategies on the Cesium during severe accidents are analyzed. Consequently, this study suggests the optimum venting strategies of FCVS in order to minimize the amount of Cs released to the environment.