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
Thermal Hydraulics
The division provides a forum for focused technical dialogue on thermal hydraulic technology in the nuclear industry. Specifically, this will include heat transfer and fluid mechanics involved in the utilization of nuclear energy. It is intended to attract the highest quality of theoretical and experimental work to ANS, including research on basic phenomena and application to nuclear system design.
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.
T. Banno, S. Baba, A. Kinbara
Fusion Science and Technology | Volume 6 | Number 2 | September 1984 | Pages 499-502
Technical Paper | Selected papers from the Ninth International Vacuum Congress and the Fifth International Conference on Solid Surfaces (Madrid, Spain, September 26-October 1, 1983) | doi.org/10.13182/FST84-A23227
Articles are hosted by Taylor and Francis Online.
Two types of stainless steel, SUS304L and YUS170, are investigated by means of Auger Electron Spectroscopy and Scanning Electron Spectroscopy in order to assess some of their surface properties. In this experiment the effect of atomic hydrogen exposure on the composition of the material surfaces and on the surface topography is examined. For the irradiation with atomic hydrogen at elevated temperatures (100 °C ∼ 400 °C) an effective carbon removal cross section, σ, is obtained. The value of σ is of the order of 10−22 m2 for SUS304L and 10−23 m2 for YUS170. The surface oxygen concentration shows no decrease during the irradiation. Sulphur enrichment is detected after heating the samples due to surface segregation. The SEM observations show topographical surface changes in the grain size and in the roughness after heating and exposure to atomic hydrogen.
