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
Operations & Power
Members focus on the dissemination of knowledge and information in the area of power reactors with particular application to the production of electric power and process heat. The division sponsors meetings on the coverage of applied nuclear science and engineering as related to power plants, non-power reactors, and other nuclear facilities. It encourages and assists with the dissemination of knowledge pertinent to the safe and efficient operation of nuclear facilities through professional staff development, information exchange, and supporting the generation of viable solutions to current issues.
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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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.
Laila A. El-Guebaly
Fusion Science and Technology | Volume 21 | Number 3 | May 1992 | Pages 2128-2132
Blanket Shield and Neutronic | doi.org/10.13182/FST92-A30035
Articles are hosted by Taylor and Francis Online.
The ARIES study investigates the potential of tokamaks as fusion power reactors and focuses on improving the economic and safety features of fusion by integrating the environmental constraints into the design from the beginning. The ARIES-II and ARIES-IV designs incorporate advanced physics and technologies that would be available over the next 5–20 years. The two designs have the same plasma physics but different fusion-power-core designs.1 ARIES-II uses liquid Li as a coolant/breeder with V alloy structure while ARIES-IV employs solid breeder with He coolant and SiC/SiC composite structure. Low activation materials were utilized in the design to reduce the radioactive inventory. A variety of blanket/shield options was examined for both designs and the relative merits of the various materials as a function of blanket/shield thickness were demonstrated. The lifetime of the structural components was determined based on the radiation-induced damage in V and SiC. In this paper, a comparison between the two designs based on detailed neutronics analysis is presented.
