The role of a detailed aqueous phase source release model in the LANL area G performance assessment
- Los Alamos National Lab., NM (United States); and others
A preliminary draft of the Performance Assessment for the Los Alamos National Laboratory (LANL) low-level radioactive waste disposal facility at Area G is currently being completed as required by Department of Energy orders. A detailed review of the inventory data base records and the existing models for source release led to the development of a new modeling capability to describe the liquid phase transport from the waste package volumes. Nuclide quantities are sorted down to four waste package release categories for modeling: rapid release, soil, concrete/sludge, and corrosion. Geochemistry for the waste packages was evaluated in terms of the equilibrium coefficients, Kds, and elemental solubility limits, Csl, interpolated from the literature. Percolation calculations for the base case closure cover show a highly skewed distribution with an average of 4 mm/yr percolation from the disposal unit bottom. The waste release model is based on a compartment representation of the package efflux, and depends on package size, percolation rate or Darcy flux, retardation coefficient, and moisture content.
- Research Organization:
- Lockheed Idaho Technologies Co., Idaho Falls, ID (United States)
- OSTI ID:
- 240875
- Report Number(s):
- CONF-951209-; ON: DE96005882; TRN: 96:013534
- Resource Relation:
- Conference: 17. low-level radioactive waste management conference, Phoenix, AZ (United States), 12-14 Dec 1995; Other Information: PBD: [1995]; Related Information: Is Part Of Proceedings: 17th annual US Department of Energy low-level radioactive waste management conference; Lake, D. [ed.]; PB: 480 p.
- Country of Publication:
- United States
- Language:
- English
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