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Division Spotlight
Aerospace Nuclear Science & Technology
Organized to promote the advancement of knowledge in the use of nuclear science and technologies in the aerospace application. Specialized nuclear-based technologies and applications are needed to advance the state-of-the-art in aerospace design, engineering and operations to explore planetary bodies in our solar system and beyond, plus enhance the safety of air travel, especially high speed air travel. Areas of interest will include but are not limited to the creation of nuclear-based power and propulsion systems, multifunctional materials to protect humans and electronic components from atmospheric, space, and nuclear power system radiation, human factor strategies for the safety and reliable operation of nuclear power and propulsion plants by non-specialized personnel and more.
Meeting Spotlight
International Conference on Mathematics and Computational Methods Applied to Nuclear Science and Engineering (M&C 2025)
April 27–30, 2025
Denver, CO|The Westin Denver Downtown
Standards Program
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
TerraPower begins U.K. regulatory approval process
Seattle-based TerraPower signaled its interest this week in building its Natrium small modular reactor in the United Kingdom, the company announced.
TerraPower sent a letter to the U.K.’s Department for Energy Security and Net Zero, formally establishing its intention to enter the U.K. generic design assessment (GDA) process. This is TerraPower’s first step in deployment of its Natrium technology—a 345-MW sodium fast reactor coupled with a molten salt energy storage unit—on the international stage.
I. Y. Borg
Nuclear Technology | Volume 26 | Number 1 | May 1975 | Pages 88-100
Technical Paper | Nuclear Explosive | doi.org/10.13182/NT75-A24406
Articles are hosted by Taylor and Francis Online.
An inventory of 137Cs, 106Ru, 125Sb, 144Ce, 155Eu, 90Sr, 3H, and assorted activation products in glass recovered in postshot cores from the Piledriver Event indicates that 60% of these fission products produced by the nuclear explosion are retained in the sampled glass. Chemical analyses of the major constituents of the glasses closely resemble those of the preshot rock except for the water content (which decreases) and conversion of original ferric iron to ferrous iron. Water in the glasses is close to the amount expected if quasiequilibrium existed at the time of quenching; however, the amount of tritium in water contained by the glass is considerably below anticipated amounts. Calculations indicate that cavity pressure (56 bars) was about half overburden pressure (121 bars) at the time water ceased to evolve from the cooling melt. Not unexpectedly, rubble in the chimney at horizons immediately above the shot point is enriched in volatile fission products relative to 144Ce and shows heterogeneous distribution of radioactivity. Some evidence of devitrification in the glasses was noted, but high-pressure polymorphs of original mineral constituents were not recognized.