Advanced Modeling and Experimental Validation of Complex Nuclear Material Waste Forms of Potential Transportation Concern.

Kelly, D. ; Paffett, M. T.

Technical Information Center Oak Ridge Tennessee

关键词: Computer models;    Validation;    Radioactive wastes;    Containers;    Waste forms;   

RP-ID  :  DE2004832821

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

We present here computer modeling efforts to describe the time-dependent pressurization and gas-phase mole fractions inside sealed canisters containing actinide materials packaged with small (0.12 - 0.5 wt. %) amounts of water. The model is run using Chemkin software, and the chemical reaction mechanism includes gas generation due to radiolysis of adsorbed water, interfacial chemical reactions, and adsorption/desorption kinetics of water on PuO2 materials. The ultimate goal is to provide a verifiable computer model that can be used to predict problematic gas generation in storage forms and assure design criteria for short-term storage and transportation of less than well-characterized (with respect to gas generation) material classes.