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
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.
Hidematsu Ikeda, Naotake Katoh
Nuclear Technology | Volume 118 | Number 1 | April 1997 | Pages 32-41
Technical Paper | Kiyose Birthday Anniversary Special / Enrichment and Reprocessing System | doi.org/10.13182/NT97-A35354
Articles are hosted by Taylor and Francis Online.
An application of a modern control to a pulsed column is considered. Experimentally, a finite time settling control (FTSC) with finite time settling observer (FTSO) algorithms as a modern control scheme for a single loop controller of pulsed columns was selected. The FTSC with FTSO algorithms in this study was based on the step response pattern such as the dynamic behavior for the transfer function. The control objective was to keep the solute concentration in the product stream. First, the control system was designed from the measurement data of a step response using 30% trin-butylphosphate in a kerosene-acetic acid-water system. Then, the control algorithms were applied to the Purex liquid system using the published experimental data of uranium concentration during a transient operation. The controllabilities of pulsed columns are discussed in the direct digital control simulation studies.
