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
Nuclear Installations Safety
Devoted specifically to the safety of nuclear installations and the health and safety of the public, this division seeks a better understanding of the role of safety in the design, construction and operation of nuclear installation facilities. The division also promotes engineering and scientific technology advancement associated with the safety of such facilities.
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.
Tyler R. Steiner, Emily N. Hutchins, Richard H. Howard
Nuclear Technology | Volume 208 | Number 1 | January 2022 | Pages 100-114
Technical Paper | doi.org/10.1080/00295450.2021.1879582
Articles are hosted by Taylor and Francis Online.
Nuclear thermal propulsion (NTP) demonstrated a reported technology readiness level of 5 during the work performed in the 1950s–1970s under the Rover program. This level of capability was achieved through the design, construction, and use of 22 experimental ground tests. These experiments served as testbeds for designs, materials, and instrumentation at prototypical NTP conditions. To continue the investigation into NTP system materials, components, and fuels, a modern experimental testbed has been designed and implemented. A steady-state, high-temperature, subscale, in-pile testbed has been developed to continue this investigation. The In-Pile Experiment Set Apparatus (INSET) has demonstrated that it can be used to test samples under two NTP prototypical environmental factors: temperature and neutron fluence. The demonstration using The Ohio State University Research Reactor is presented here. This demonstration required INSET to maintain a thermal environment below 1070 K for 15 min during a 5-h irradiation to achieve a neutron fluence around 1017 n/cm2.