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Conference Spotlight
2025 ANS Winter Conference & Expo
November 9–12, 2025
Washington, DC|Washington Hilton
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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ITA to work with IAEA on advance geologic repository knowledge
The International Tunnelling and Underground Space Association (ITA), a nongovernmental organization made up of 81 member states working to advance the safe, beneficial use of subsurface spaces, is working with the International Atomic Energy Agency to support the advancement of geologic disposal facilities for high-level radioactive waste.
Yigal Ronen, Yaakov Fahima
Nuclear Technology | Volume 73 | Number 2 | May 1986 | Pages 210-219
Technical Paper | Performance of Borosilicate Glass High-Level Waste Forms in Disposal System / Fission Reactor | doi.org/10.13182/NT86-A33785
Articles are hosted by Taylor and Francis Online.
A high convertor pressure tube reactor is presented and analyzed from the standpoint of neutronics. High conversion and for some cases even breeding are obtained because of the hard neutron spectrum in a tight lattice reactor as well by reducing the parasitic absorptions through constant refueling. Eight different cases are analyzed with different fuels (232Th, 233U, 235U, 238U, and plutonium) and different coolants (H2O and D2O). The advantage of pressure tube reactors compared to pressure vessel reactors is demonstrated from the standpoint of the neutronics. This advantage is demonstrated by the improved fuel utilization associated with pressure tube reactors.
