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Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
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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).”
Kazuo Haga, Yukinori Nishizawa, Toshio Watanabe, Shinya Miyahara, Yoshiaki Himeno
Nuclear Technology | Volume 97 | Number 2 | February 1992 | Pages 177-185
Technical Paper | Nuclear Reactor Safety | doi.org/10.13182/NT92-A34614
Articles are hosted by Taylor and Francis Online.
Two series of experiments have been conducted to obtain the gas-liquid equilibrium partition coefficient Kd and the nonequilibrium partition coefficient K’d of volatile fission products such as cesium, iodine, and tellurium between liquid sodium and the gas phase. In the equilibrium experiment, a sodium pool mixed with a fission product simulant was heated by an electric furnace, and the solvent of the vapors and aerosols trapped by filters was quantitatively analyzed. The results are as follows: 1. Cesium shows the largest Kd (20 to 100). 2. The Kd value of iodine scatters as widely as 0.02 to 0.5 at 450°C and 0.3 to 0.8 at 650°C. 3. The Kd values of cesium and iodine agree well with the theoretical ones reported by Castleman and Tang. 4. If sodium telluride, which is harder to vaporize than pure tellurium, is assumed, the measured Kd value of tellurium agrees with the theoretical.The nonequilibrium experiment in which the temperature dropped relatively sharply in the cover-gas region shows that K’d was not larger than Kd.