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!
Latest Magazine Issues
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.
Jiunn-Guang Lo, Dar-Yeong Chen, Jen-Zen Wang
Nuclear Technology | Volume 72 | Number 2 | February 1986 | Pages 212-217
Technical Paper | Technique | doi.org/10.13182/NT86-A33743
Articles are hosted by Taylor and Francis Online.
A sample counting cell for monitoring ultralow-level 85Kr in environmental air samples has been designed. The cell consists of ∼10 g of hydrogen mor-denite covered with 0.075-mm aluminum foil. The 85Kr is adsorbed by the hydrogen mordenite inside the counting cell. The radioactivity of 85Kr in the cell is measured by a modified external gas flow proportional counter. A refined separation method for the purification of 85Kr in the air sample has also been developed. The low detection limit for this improved counting system, including the refined separation procedure, is ∼0.02 pCi/cm3 based on 50-ℓ air samples at 1 atm. This counting method is also compared in detail with other methods.
