GGSD Program Details for DUST-BNL

DUST-BNL

Category	Contaminant transport (1D)
Platform	DOS
Status	Public domain
Description	DUST-BNL is a program for radioactive waste transport from container leaks into groundwater. It solves for release and transport of contaminants from containerized wastes. Each container may have unique properties (i.e. time to failure or localized failure, e.g. pitting) and each waste form may have unique release properties. Release from the waste form is limited by one of four physical or chemical restraints: solubility, diffusion, dissolution, and surface wash-off with partitioning. The release from the waste form acts as a source for transport in the advection/dispersion equation. Transport is modeled in one-dimension through the groundwater pathway from subsurface disposal. RNUCL.DAT, data base of half-lives, solubility limits, and atomic mass for selected radionuclides, is included in this package. The advection/dispersion transport equation with spatially varying sources (waste forms) is solved using the method of finite-differences. Advancement in time is achieved using the fully implicit backward Euler scheme. An option exists which permits an analytical solution to the advection equation with spatially varying sources. This procedure is an extension of the mixing-cell cascade models. Radioactive decay and sorption processes are included in either model. Container performance is calculated through empirical correlations and user-supplied input data. Waste form release characteristics are simulated with geometry-dependent (rectangular or cylindrical waste forms) analytical solutions to the diffusion equation. Dissolution is modeled through an input value specifying yearly fractional release rate and rinse release with partitioning is simulated using user-supplied values. In all cases, checks are made to prevent solubility limits from being exceeded.
Data formats supported	None stated
Supplier in France	OECD Nuclear Energy Agency