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Division Spotlight
Reactor Physics
The division's objectives are to promote the advancement of knowledge and understanding of the fundamental physical phenomena characterizing nuclear reactors and other nuclear systems. The division encourages research and disseminates information through meetings and publications. Areas of technical interest include nuclear data, particle interactions and transport, reactor and nuclear systems analysis, methods, design, validation and operating experience and standards. The Wigner Award heads the awards program.
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.
W. A. Fragetta, R. E. Rocco
Fusion Science and Technology | Volume 19 | Number 3 | May 1991 | Pages 1115-1120
Ignition Device | doi.org/10.13182/FST91-A29492
Articles are hosted by Taylor and Francis Online.
The Compact Ignition Tokamak (CIT) vacuum vessel is envisioned to be a thick wall torus with a Dee shaped cross section. It must withstand violent impact forces from plasma disruptions. Operating conditions include a base pressure of 10−8 torr and a 350°C base temperature. A suitable vacuum vessel material of construction must combine adequate elevated temperature strength and desired physical properties compatible with the operating service conditions. CIT performance and design requirements also dictate that fabricability and availability critically influence selection. Similarly, a requirement that the vessel shall have a low level waste activation further affects the appropriate choice. Based upon these selection criteria two materials were identified, that used in a unique hybrid design, satisfy both performance and decommissioning requirements.
