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Division Spotlight
Accelerator Applications
The division was organized to promote the advancement of knowledge of the use of particle accelerator technologies for nuclear and other applications. It focuses on production of neutrons and other particles, utilization of these particles for scientific or industrial purposes, such as the production or destruction of radionuclides significant to energy, medicine, defense or other endeavors, as well as imaging and diagnostics.
Meeting Spotlight
Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
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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Latest News
NRC cuts fees by 50 percent for advanced reactor applicants
The Nuclear Regulatory Commission has announced it has amended regulations for the licensing, inspection, special projects, and annual fees it will charge applicants and licensees for fiscal year 2025.
R. Lässer, D.K. Murdoch, R.-D. Penzhorn
Fusion Science and Technology | Volume 41 | Number 3 | May 2002 | Pages 621-625
Device, Facility, and Operation | Proceedings of the Sixth International Conference on Tritium Science and Technology Tsukuba, Japan November 12-16, 2001 | doi.org/10.13182/FST41-621
Articles are hosted by Taylor and Francis Online.
The present design of the ITER mechanical forevacuum system foresees the use of Roots pumps with pumping speeds of 4200 and 1200 m3/h. Commercial Roots pumps on the market are not tritium compatible. They require one or more of the following modifications: i) replacement of elastomer O-rings by metal seals, ii) minimisation or elimination of leaks along the rotating shafts and iii) only use of tritium compatible materials. This paper presents the possible application of ferrofluidic seals to avoid gas flows between the pumping and the oil filled volumes. Tests were performed with ferrofluidic seals for different rotational shaft speeds up to 1500 rpm and for various pressure differences up to 100 kPa. The results with the ferrofluidic seal were very encouraging showing very small leak rates under Roots pump relevant conditions. To verify the performance of ferrofluidic seals under realistic conditions a tritium compatible Roots pump having a pumping speed of 250 m3/h and using ferrofluidic and metal seals is being constructed.