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Explore the many uses for nuclear science and its impact on energy, the environment, healthcare, food, and more.
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
2024 ANS Winter Conference and Expo
November 17–21, 2024
Orlando, FL|Renaissance Orlando at SeaWorld
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
New laws offer nuclear industry incentives for existing power plant uprates
This year, the U.S. nuclear industry received a much-needed economic boost that could help preserve operating nuclear power plants and incentivize upgrades that extend their lifespan and power output.
Signed into law in 2022, the Inflation Reduction Act offers production tax credits (PTCs) for existing nuclear power plants and either PTCs or investment tax credits (ITCs) for new carbon-free generation. These credits could make power uprates—increasing the maximum power level at which a commercial plant may operate—a much more appealing option for utilities.
R. E. Dahl, H. H. Yoshikawa
Nuclear Science and Engineering | Volume 17 | Number 3 | November 1963 | Pages 398-403
Technical Paper | doi.org/10.13182/NSE63-A17388
Articles are hosted by Taylor and Francis Online.
Fast-neutron spectra have been computed using three different codes: GNU-II, HFN, GEHAPO-S-X. Significant differences in spectra are seen as one uses codes with varying degrees of refinement. GE-HAPO-S-X was chosen for calculating cross section values and testing damage models because of its greater accuracy and wider applicability. The calculations illustrate spectral differences existing at different points in a reactor lattice. The spectra are used to compute relative activation for such fast-neutron flux monitor materials as Ni58, Fe54, Am243 and to calculate gross vacancy production using widely varying damage models. From the results it is concluded that calculation of spectra in irradiation facilities is necessary for the proper reduction of monitor activities to neutron exposures and for correlation of observed radiation effects in materials irradiated in dissimilar facilities.
