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Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
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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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ANS joins others in seeking to discuss SNF/HLW impasse
The American Nuclear Society joined seven other organizations to send a letter to Energy Secretary Christopher Wright on July 8, asking to meet with him to discuss “the restoration of a highly functioning program to meet DOE’s legal responsibility to manage and dispose of the nation’s commercial and legacy defense spent nuclear fuel (SNF) and high-level radioactive waste (HLW).”
K. Böhnel
Nuclear Technology | Volume 19 | Number 3 | September 1973 | Pages 199-201
Technical Paper | Analysis | doi.org/10.13182/NT73-A15882
Articles are hosted by Taylor and Francis Online.
The assay of a light water reactor rod for its fissile uranium content can be accomplished by irradiating the rod in a water bath with neutrons from an antimony-beryllium source. The different slowing down properties of the moderator for neutrons of different energy cause a much stronger attenuation of the source neutron flux than of the flux originating from the induced fissions. At 25 cm from the source, the fission neutrons already contribute 20% to the signal measured by ordinary thermal-neutron detectors, allowing determination of their intensity as a measure of the fissile content of the rod. Laboratory experiments demonstrated that a 30-mCi source is sufficient to attain 1% precision in 1 min.