Simulation of gas phase transport of carbon-14 at Yucca Mountain, Nevada, USA
Waste Management
By: N. Lu and B. Ross
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Abstract
We have simulated gas phase transport of Carbon-14 at Yucca Mountain, Nevada. Three models were established to calculate travel time of Carbon-14 from the potential repository to the mountain surface: a geochemical model for retardation factors, a coupled gas-flow and heat transfer model for temperature and gas flow fields, and a particle tracker for travel time calculation. The simulations used three parallel, east-west cross-sections that were taken from the Sandia National Laboratories Interactive Graphics Information System (IGIS). Assuming that the repository is filled with 30- year-old waste at an initial areal power density of 57 kw/acre, we found that repository temperatures remain above 60??C for more than 10,000 years. For a tuff permeability of 10-7 cm2, Carbon-14 travel times to the surface are mostly less than 1,000 years, for particles starting at any time within the first 10,000 years. If the tuff permeability is 10-8 cm2, however, Carbon- 14 travel times to the surface range from 3,000 to 12,000 years, for particle starting within the 10,000 years.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Simulation of gas phase transport of carbon-14 at Yucca Mountain, Nevada, USA |
| Series title | Waste Management |
| DOI | 10.1016/0956-053X(94)90045-0 |
| Volume | 14 |
| Issue | 5 |
| Year Published | 1994 |
| Language | English |
| Publisher | Pergamon Press Inc |
| Publisher location | Tarrytown, NY, United States |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | Waste Management |
| First page | 409 |
| Last page | 420 |
| Google Analytic Metrics | Metrics page |