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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.
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Why should safeguards by design be a global effort?
Jeremy Whitlock
I can’t think of a more exciting time to be working in nuclear, with the diversity of advanced reactor development and increasing global support for nuclear in sustainable energy planning. But we can’t lose sight of the need to plan for efficient international safeguards at the same time.
Global nuclear deployment has been underpinned since 1970 by the Treaty on the Non-Proliferation of Nuclear Weapons (NPT), making it a key customer requirement for governments to demonstrate unequivocally that the technology is not being misused for weapons development.
The International Atomic Energy Agency (IAEA) has helped verify this commitment for more than 50 years, but it has never safeguarded many of the advanced reactors (and related fuel cycle processes) being developed today.
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.