ANS is committed to advancing, fostering, and promoting the development and application of nuclear sciences and technologies to benefit society.
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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
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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Apr 2025
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Nuclear Science and Engineering
May 2025
Nuclear Technology
Fusion Science and Technology
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.
R. G. Alsmiller, Jr., J. Barish, R. T. Santoro, R. A. Lillie, J. M. Barnes, M. M. H. Ragheb
Nuclear Technology | Volume 48 | Number 3 | May 1980 | Pages 187-195
Technical Paper | Reactor | doi.org/10.13182/NT80-A32466
Articles are hosted by Taylor and Francis Online.
Calculated dose rates in the Tokamak Fusion Test Reactor test cell from induced activity have been obtained. The dose rates for the case of no neutral beam injector and when a neutral beam injector (with the resultant large penetration through the primary shield) is present are given separately. The photon transport calculations are carried out using Monte Carlo techniques, since this greatly facilitates the consideration of different pulse sequences and times after reactor shutdown. Dose rates are given for several different deuterium-tritium pulse sequences and for a variety of times after the reactor is turned off. At a few positions in the test cell, the contribution to the dose rates from individual residual nuclei is also presented. In general, it is found that the presence of the shielded neutral beam injector does not have a large effect on the dose rates in the test cell.