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Conference Spotlight
2025 ANS Winter Conference & Expo
November 9–12, 2025
Washington, DC|Washington Hilton
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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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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.
Byung Soo Moon
Nuclear Science and Engineering | Volume 126 | Number 1 | May 1997 | Pages 115-118
Technical Paper | doi.org/10.13182/NSE97-A24463
Articles are hosted by Taylor and Francis Online.
The major difficulties encountered in controlling the steam generator water level swell and shrinkage are analyzed. A mathematical model based on the amount of steam generated by depres-surization during the periodic steam dump is used to predict the level changes. When the existing proportional integral controller is applied to the negative of these predicted level changes and the output is added to the controller output for the normal level error, it is found that the water level does not go down below the lower limit or up beyond the higher limit. This control algorithm is tested on a model steam generator, and the results show it is capable of handling the difficulties in the control of the level swell and shrinkage.
