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Division Spotlight
Nuclear Installations Safety
Devoted specifically to the safety of nuclear installations and the health and safety of the public, this division seeks a better understanding of the role of safety in the design, construction and operation of nuclear installation facilities. The division also promotes engineering and scientific technology advancement associated with the safety of such facilities.
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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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.
D. J. Pellarin, J. L. Jarriel
Nuclear Technology | Volume 42 | Number 2 | February 1979 | Pages 150-154
Technical Paper | Thorium Fuel Cycle in a Breeder Economy / Reactor | doi.org/10.13182/NT79-A32145
Articles are hosted by Taylor and Francis Online.
Subcritical multiplication constants have been derived from pulsed-neutron measurements for 2×3 square pitch and hexagonal arrays of massive hollow cylinders of uranium-aluminum alloy in H2O. The cylinders were 22.02-cm-o.d., 14.80-cm-i.d. bare 235U-Al alloy castings of 30.50 wt% uranium (76.97% 235U) in aluminum. These measurements extend previous benchmark experiments on similar castings with lower enrichments. KENO-IV, a multigroup Monte Carlo criticality code (with Hansen-Roach cross sections), calculates the subcritical multiplication constants for these lattices over the reactivity range 0.77 < keff < 0.98, with an average conservative bias of ∼0.005 in keff.
