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Division Spotlight
Radiation Protection & Shielding
The Radiation Protection and Shielding Division is developing and promoting radiation protection and shielding aspects of nuclear science and technology — including interaction of nuclear radiation with materials and biological systems, instruments and techniques for the measurement of nuclear radiation fields, and radiation shield design and evaluation.
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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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.
B.F. Peterman, J.R. Johnson, R.G.C. McElroy
Fusion Science and Technology | Volume 8 | Number 2 | September 1985 | Pages 2557-2563
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-A24664
Articles are hosted by Taylor and Francis Online.
This paper describes a study on metabolism of inhaled tritiated hydrogen gas (HT) in mammals. Rats and human volunteers were exposed to HT gas for periods from one minute to ten minutes. The amount of HT that was oxidized in vivo was estimated by measuring the concentration of HTO in urine. No significant quantities of tritiated organic compounds resulting from HT gas inhalation were observed in tissues of rats and it is assumed that this holds true for humans also. The fraction of inhaled HT converted to HTO in human volunteers was found to be about 1 × 10−4 indicating that the dose from the HTO that resulted from HT oxidiation is a significant component of the effective dose equivalent.
