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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.
Russell D. Mosteller, Frank J. Rahn
Nuclear Technology | Volume 110 | Number 2 | May 1995 | Pages 168-180
Technical Paper | Nuclear Reactor Safety | doi.org/10.13182/NT95-A35116
Articles are hosted by Taylor and Francis Online.
The possibility of recriticality during the reflood phase of a severe accident in a boiling water reactor (BWR) is investigated. In addition, the fraction of control-rod material that must be retained to prevent recriticality is determined for several different geometries. Detailed calculations for a representative portion of a BWR core are performed with the Monte Carlo MCNP code to evaluate the neutronic response of the damaged core under a number of different scenarios. Retention of <10% of the 10B that is initially present in the control rods may be sufficient to prevent recriticality. The reactivity effect of the retained 10B is sensitive to the porosity and homogeneity of the eutectic formed by the control rod materials as well as to the degree to which that eutectic is dispersed inside the fuel bundles.
