Assessments of System Impacts of Spent Fuel Thermal Characteristics and Emplacement Rates

by Larry D. Rickertsen, TRW Environmental Safety Systems Inc, Vienna, United States,

Document Type: Proceeding Paper

Part of: High Level Radioactive Waste Management 1993


Analyses conducted to evaluate the impacts spent fuel thermal characteristics and emplacement rates might have on the thermal conditions in a candidate geologic repository at the Yucca Mountain site are reported here. These analyses considered the effect of the current projections for the burnup of the spent fuel, the variability in waste thermal characteristics, and the sequence and location of waste emplacement on the repository temperatures relative to those predicted for the Yucca Mountain Site Characterization Plan (SCP). The results show that, for the same conceptual design, the temperatures in the repository would be significantly higher than those considered for the SCP. These results could affect the evaluations of alternative thermal loading strategies for the candidate repository.

Subject Headings: Thermal properties | Fuels | Thermal analysis | Radioactive wastes | Thermal loads | Nuclear power | Waste management

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