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Conference Spotlight
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).”
Kazuichiro Seki, Shigeru Kuwabara, Katsumi Tanimura, Shinsuke Matsumoto, Masao Toba
Nuclear Technology | Volume 74 | Number 1 | July 1986 | Pages 27-37
Technical Paper | Fission Reactor | doi.org/10.13182/NT86-A33816
Articles are hosted by Taylor and Francis Online.
An analysis model has been derived on the vibration of fuel rods in a pressurized water reactor fuel assembly, which is induced by crossflow into the reactor core through a baffle gap. The distribution of speeds of fluid gushing out from a narrow slit onto the fuel rods arrayed in a lattice were first measured and then the force of fluid on fuel rods from an experiment using a mock-up. The force on fuel rods was fitted out using parameters that describe rod position. The amount of energy a fuel rod receives from the fluid through one cycle of its vibrations was calculated as a positional integration of the fluid force. The vibration mode of the fuel rod and the effective momentum flux of the fluid were calculated using the energy. The result of analyzing the effective momentum flux agrees well with the measured result, demonstrating the adequacy of the analysis model developed.