ANS is committed to advancing, fostering, and promoting the development and application of nuclear sciences and technologies to benefit society.
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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!
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Nuclear Science and Engineering
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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.
R.M. Brown
Fusion Science and Technology | Volume 8 | Number 2 | September 1985 | Pages 2539-2543
Environmental Study | Proceedings of the Second National Topical Meeting on Tritium Technology in Fission, Fusion and Isotopic Applications (Dayton, Ohio, April 30 to May 2, 1985) | doi.org/10.13182/FST85-A24661
Articles are hosted by Taylor and Francis Online.
The release of tritium into the public environment from heavy water reactor operations at Chalk River Nuclear Laboratories is about 0.1% of the Derived Release Limit which is based on internationally accepted standards. A mean discharge of 500 TBq/a of HTO vapour to the atmosphere has resulted in concentrations in precipitation at the plant boundary of 74 Bq/L. (1 TeraBq = 1012Bq = 27 Ci). A dilution factor of 6 × 107 m3/s is observed. Measurements of HTO in tree leaf moisture and integrated snow cores serve to delineate the dispersal plume. Measured discharges of liquid HTO to local surface and groundwaters totaling 147 TBq/a agree reasonably well with amounts observed in the Ottawa River. Preliminary measurements have shown that minor amounts of HT are being released to the atmosphere from the Chalk River facilities.
