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Conference Spotlight
2026 Annual Conference
May 31–June 3, 2026
Denver, CO|Sheraton Denver
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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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.
Ming-Shih Lu, Theodor Teichmann
Nuclear Technology | Volume 102 | Number 2 | May 1993 | Pages 196-209
Technical Paper | Nuclear Fuel Cycle | doi.org/10.13182/NT93-A34817
Articles are hosted by Taylor and Francis Online.
The error characteristics of both high-resolution gamma spectroscopy and high-level neutron coincidence (HLNC) measurements, separate or combined, are discussed as they apply to nondestructive analysis of plutonium-bearing materials. Expressions have been derived to estimate the overall variance in the 240Pu effective mass and in the total plutonium mass in terms of the specific contributions from uncertainties in the measurements, the pertinent physical variables (including isotopics and impurities), and the instrumental constants. Experimental data available in the published literature have been used to illustrate the error characteristics of the HLNC and the effects of isotopic error correlations associated with materials having different burnups.
