Core flow-through apparatus: letter report documenting testing phase

摘要

As part of the task of developing conceptual, physical and chemical, and performance models of the dynamics of water and dissolved and colloidal radionuclide constituents in the near-field, measurements of flow and transport properties of repository rocks and other near- field components are required. An apparatus has been fabricated that will be used to collect pertinent flow and transport data at temperatures expected in the near-field. Description of the core-flow apparatus (CFA) and preliminary testing results are included in this letter report. The apparatus was designed to study the flow of radionuclide-bearing solutions through fractured or unfractured cylindrical samples of rock and other competent materials (e.g. concrete). Because near- field transport was the goal, the CFA was designed to be operated at elevated temperatures.