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首页> 美国政府科技报告 >Safety Assessment of Alternatives to Shallow-Land Burial of Low-Level Radioactive Waste. Volume 2. Environmental Conditions Affecting Reliability of Engineered Barriers.
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Safety Assessment of Alternatives to Shallow-Land Burial of Low-Level Radioactive Waste. Volume 2. Environmental Conditions Affecting Reliability of Engineered Barriers.

机译：低放射性废物浅埋埋地替代安全评价。第2卷。影响工程障碍可靠性的环境条件。

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摘要

The need for new disposal capacity for low-level radioactive waste (LLW) has led to a re-examination of disposal practices. A number of enhancements and alternatives to traditional shallow-land burial have been proposed to meet the need for new capacity and to address various concerns about the performance history of existing commercial LLW sites. The document builds on the results of the Volume I effort, which identified the important LLW disposal facility engineered barriers of cover and structure. Fifteen potentially important degradation mechanisms for a LLW facility are identified, categorized, and analyzed to determine their importance to the proper functioning of the disposal facility over its 500-year lifetime. Wind storms, biological intrusion, mechanical settling, freeze/thaw cycling, chemical degradation, wind erosion, and water erosion were considered the most important mechanisms. Data supporting concrete structure long-term performance in sulfate environments and long-term cover performance in erosive and biological intrusion environments were obtained. Research on the performance of covers and concrete structures in the presence of the other listed degradation mechanisms is recommended.

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