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.
L. Duchatelle, L. de Nucheze, M. G. Robin
Nuclear Technology | Volume 24 | Number 2 | November 1974 | Pages 123-136
Technical Paper | Reactor | doi.org/10.13182/NT74-A31469
Articles are hosted by Taylor and Francis Online.
Prior to construction, the modular steam generator of the French 250-MW(e) fast breeder demonstration plant (Phenix) was submitted to a number of tests carried out on scale-one module mockups. The Phenix steam generator consists of seven tube coil-shaped modules operated as countercurrent sodium-to-water (or steam) heat exchangers. We report on the experimental verification of the accuracy of the procedures and models utilized to predict the steady-state heat transfer, the pressure losses, and the static stability of a 15-MW(th) mockup comprised of an economizer-evaporator, a superheater, and a reheater tested for 8000 h on the 5-MW(th) CEA facility at Grand Quevilly, and a 45-MW(th) mock-up comprised of three economizer-evaporators, three superheaters, and three reheaters tested 6200 h at Les Renardières on the 45-MW(th) EDF facility.
