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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
Utility Working Conference and Vendor Technology Expo (UWC 2024)
August 4–7, 2024
Marco Island, FL|JW Marriott Marco Island
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
Construction begins on Kairos’s fluoride salt–cooled test reactor
Earlier today, on a site in Oak Ridge, Tenn., that was formerly home to the K-33 Gaseous Diffusion Plant, Kairos Power marked the start of construction on its low-power demonstration reactor. Named Hermes, the 35-MWt test reactor claims status as the first Gen IV reactor to be approved for construction by the Nuclear Regulatory Commission and the first non–light water reactor to be permitted in the United States in more than 50 years.
K. Koizumi, M. Nakahira, K. Oka, Y. Itou, H. Takahashi, E. Tada, K. Ioki, G. Johnson, M. Onozuka, Y. Utin, G. Sannazzaro, F. Elio, K. Takahashi
Fusion Science and Technology | Volume 34 | Number 3 | November 1998 | Pages 586-590
International Thermonuclear Experimental Reactor (ITER) (Poster Session) | doi.org/10.13182/FST98-A11963677
Articles are hosted by Taylor and Francis Online.
Fabrication of a full-scale sector model of the ITER vacuum vessel, which was initiated in 1995 as one of the Large Seven ITER R&D Projects, was completed in September 1997. The full-scale sector model corresponds to an 18° toroidal sector, is composed of two 9° sectors, Sector A and B, which are spliced at the port center according to the current ITER design. In order to satisfy tight manufacturing tolerances of ± 5 mm and to assure the structural integrity of a double-walled structure, a combination of Gas Tungsten Arc (TIG)/Electron Beam (EB) welding and TIG/Gas Metal Arc (MIG) welding were adopted for Sector-A and B, respectively. Although the different fabrication procedures and welding techniques were employed for the fabrication, both sectors have successfully satisfied the dimensional accuracy of ± 3 mm for the total height, total width and total wall thickness. After the completion of fabrication, both sectors were shipped to the test site in Japan Atomic Energy Research Institute (JAERI) and assembly test was begun in October 1997. The first demonstration test of automatic narrow gap TIG welding of the field joints between sectors was successfully completed at the end of May 1998. This paper outlines the design and fabrication procedures and describes the results of the fabrication and assembly test of Sector A and B.