RADIONUCLIDE MASS-TRANSFER RATES FROM A PINHOLE IN A WASTE CONTAINER FOR AN INVENTORY-LIMITED AND CONSTANT CONCENTRATION SOURCE

Analytical solutions for transient and steady-state diffusive mass tra nsfer rates front a pinhole in a waste container are developed for con stant concentration and inventory-limited source conditions. Mass tran sport in three media are considered: inside the pinhole (medium 2), ou tside the container (medium 3), and inside the container (medium I). S imple equations are developed for radionuclide mass transfer rates fro m a pinhole. It is shown that the medium with the largest mass transfe r resistance need only be considered to provide a conservative estimat e of mass transfer rates.