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ANS Student Conference 2025
April 3–5, 2025
Albuquerque, NM|The University of New Mexico
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Fabrication milestone for INL’s MARVEL microreactor
A team from Idaho National Laboratory and the Department of Energy’s Office of Nuclear Energy (DOE-NE) recently visited Carolina Fabricators Inc. (CFI), in West Columbia, S.C., to launch the fabrication process for the primary coolant system of the MARVEL microreactor. Battelle Energy Alliance (BEA), which manages INL, awarded the CFI contract in January.
Trygve E. Eriksen
Nuclear Technology | Volume 70 | Number 2 | August 1985 | Pages 261-267
Technical Paper | Radioactive Waste Management | doi.org/10.13182/NT85-A33651
Articles are hosted by Taylor and Francis Online.
Migration of I52Eu(III), 235Np(V), 237Pu(IV), 241Am(III), 99Tc(VII), and 99Tc(IV) was studied in natural fissures oriented parallel to the axis of granitic drill cores. A pulse of radionuclide solution was injected at one end of the fissure and the temporal change in radionuclide concentration of the effluent measured. At the end of each experiment the fissure was opened and the radionuclide distribution on the fissure surfaces measured. The radionuclide distribution ratios Ra, calculated from the measured retardation, correlate well to published distribution coefficients Kd. The increase in retardation of 235Np with increasing pH in the pH range 6 to 9 is in accordance with the hydrolytic equilibrium NpO2+ + OH‾ ⇄ NpO2(OH). Reduction of Tc(VII) to Tc(IV) resulted in a marked increase in retardation.
