ANS is committed to advancing, fostering, and promoting the development and application of nuclear sciences and technologies to benefit society.
Explore the many uses for nuclear science and its impact on energy, the environment, healthcare, food, and more.
Division Spotlight
Thermal Hydraulics
The division provides a forum for focused technical dialogue on thermal hydraulic technology in the nuclear industry. Specifically, this will include heat transfer and fluid mechanics involved in the utilization of nuclear energy. It is intended to attract the highest quality of theoretical and experimental work to ANS, including research on basic phenomena and application to nuclear system design.
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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August 2024
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.
Takashi Nakamura, Toshiso Kosako, Katsumi Hayashi, Shuichi Ban, Kazuaki Katoh
Nuclear Science and Engineering | Volume 77 | Number 2 | February 1981 | Pages 182-191
Technical Paper | doi.org/10.13182/NSE81-A21352
Articles are hosted by Taylor and Francis Online.
The dose distribution and the spectrum variation of neutrons due to the skyshine effect have been measured with various detectors in the environment surrounding the electron synchrotron of the Institute for Nuclear Study, University of Tokyo. The dose distribution and the spectra of neutrons on the outer surface of the concrete shield of the synchrotron building were also measured in order to get information on the skyshine source. The measured neutron spectra both at the source and in the environment show an approximate 1/E spectrum below ∼100 keV, but the latter is much softer than the former above that energy. These experimental data were analyzed with the multigroup Monte Carlo code, MMCR, with the result that the calculated results are in good agreement with the experiment. This experiment is uniquely worthwhile since the skyshine of the radiation directed almost vertically into the air from the accelerator building was measured and the energy spectrum and dose distributions of the neutron source were clarified.