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Conference Spotlight
2026 Annual Conference
May 31–June 3, 2026
Denver, CO|Sheraton Denver
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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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Industry Update—November 2025
Here is a recap of recent industry happenings:
TerraPower’s Natrium plans for Wyoming, Utah move forward
TerraPower has reported a number of developments related to its Natrium sodium fast reactor project. In the project’s fifth round of procurement awards, the company awarded three supplier contracts to support the Natrium plant’s construction, which is underway in Kemmerer, Wyo., and is expected to be completed in 2030. AvanTech will design advanced sodium processing system modules and supporting skids for the Natrium plant, as well as fabricate and deliver the test and fill facility cold trap skid. Structural Integrity Associates will design and fabricate the sodium cover gas gamma spectroscopy analysis cabinet, a radiation monitoring system. PAR Systems will design and fabricate the pool handling machine, a specialized crane system for spent fuel pool operations.
Z. F. Kuang, I. Pázsit
Nuclear Science and Engineering | Volume 136 | Number 2 | October 2000 | Pages 305-319
Technical Note | doi.org/10.13182/NSE00-A2161
Articles are hosted by Taylor and Francis Online.
Recently, analytical formulas have been derived for the Feynman- and Rossi-Alpha measurements in accelerator-driven systems. In such systems, due to the multiplicity of the sources, the Feynman- and Rossi-Alpha formulas contain additional terms as compared with the traditional cases. A numerical evaluation of these formulas for systems with such sources is given. An assessment of the contribution of the terms that are novel as compared to the traditional formula is made. These include the terms arising from the source multiplicity, and the prompt-delayed and delayed-delayed correlations. Further, the consequences of averaging the delayed-neutron families are analyzed. Finally, a comparison is made, assuming traditional core material and one possible type of future accelerator-driven system.