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
Aerospace Nuclear Science & Technology
Organized to promote the advancement of knowledge in the use of nuclear science and technologies in the aerospace application. Specialized nuclear-based technologies and applications are needed to advance the state-of-the-art in aerospace design, engineering and operations to explore planetary bodies in our solar system and beyond, plus enhance the safety of air travel, especially high speed air travel. Areas of interest will include but are not limited to the creation of nuclear-based power and propulsion systems, multifunctional materials to protect humans and electronic components from atmospheric, space, and nuclear power system radiation, human factor strategies for the safety and reliable operation of nuclear power and propulsion plants by non-specialized personnel and more.
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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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.
Makoto Osaki, Akira Kanagawa
Nuclear Technology | Volume 85 | Number 3 | June 1989 | Pages 274-284
Technical Paper | Nuclear Safety | doi.org/10.13182/NT89-A34249
Articles are hosted by Taylor and Francis Online.
To examine the performance of the high-efficiency particulate air (HEPA) filter, demonstration tests were performed under several severe conditions. The HEPA filter tested is a 610- × 610- × 292-mm conventional deep-pleat filter, normally used in a fuel reprocessing plant. It was tested under a variety of conditions: in air with concentrated dust (100 mg/m3), at high temperatures (maximum 240°C), in humid air (relative humidity 95% and water mist of 100 mg/m3), in a shock transient (overpressure up to 50 kPa), in a large air flow (pressure drop up to 20 kPa), under severe earthquake conditions (acceleration up to 50 m/s2), and in acid and alkaline mists (6 N HNO3, 5% NaOH, 5% Na2CO3). For reference, the performance of HEPA filters in normal conditions was also measured. The HEPA filter performed efficiently enough, even in such severe conditions as would be encountered in a waste air purification system in the nuclear industry. Some empirical formulas are proposed to express the performance of the filter.
