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
Accelerator Applications
The division was organized to promote the advancement of knowledge of the use of particle accelerator technologies for nuclear and other applications. It focuses on production of neutrons and other particles, utilization of these particles for scientific or industrial purposes, such as the production or destruction of radionuclides significant to energy, medicine, defense or other endeavors, as well as imaging and diagnostics.
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
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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.
Brett J. Menaker, Russell E. Allen, Harry E. Painter
Nuclear Technology | Volume 91 | Number 1 | July 1990 | Pages 75-80
Technical Paper | Safety of Next Generation Power Reactor / Nuclear Safety | doi.org/10.13182/NT90-A34442
Articles are hosted by Taylor and Francis Online.
Containment cooling using natural convection and radiation is a key passive safety feature studied for a 600-MW(electric) advanced small pressurized water reactor. A free-standing cylindrical steel containment vessel is surrounded by a reinforced concrete shield building configured as a chimney. Various methods to enhance natural-convection cooling were evaluated. The evaluation and selection process considered effectiveness, constructibility and effect on schedule, cost, degree of passivity, inspection and maintenance requirements, operational problems, and simplicity. As a result of these evaluations, a combination of fins and convection from the dome in addition to the cylinder is selected.
