Scenario Development for Performance Assessment—Some Questions for the Near-Field Modelersby G. E. Barr, Sandia Natl Lab, Albuquerque, United States,
R. W. Barnard, Sandia Natl Lab, Albuquerque, United States,
Abstract: In an attempt to achieve completeness and consistency, the performance-assessment analyses developed by the Yucca Mountain Project are tied to scenarios described in event trees. Development of scenarios requires describing the constituent features, events, and processes in detail. Several features and processes occurring at the waste packages and the rock immediately surrounding the packages (i.e., the near field) have been identified: the effects of radiation on fluids in the near-field rock, the path-dependency of rock-water interactions, and the partitioning of contaminant transport between colloids and solutes. This paper discusses some questions regarding these processes that the near-field performance-assessment modelers will need to have answered to specify those portions of scenarios dealing with the near field.
Subject Headings: Radioactive wastes | Mathematical models | Rocks | Colloids | Industrial wastes | Radiation | Trees | Nevada | North America | United States
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