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首页> 外文期刊>Journal of Materials Engineering and Performance >Feasibility of Using Steel Drums for the Confinement of Burned Low-Level Radioactive Waste Ashes
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Feasibility of Using Steel Drums for the Confinement of Burned Low-Level Radioactive Waste Ashes

机译：使用钢桶禁止烧毁的低级放射性废物灰烬的可行性

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摘要

The selection of suitable materials to construct a facility for the final disposal of radioactive wastes (repository) is a challenge in materials science, since these facilities must be designed to provide confinement to the radionuclides for long periods of time. In the case of the low-level radioactive waste (LLRW) repository, the confinement of the species must be guaranteed for more than 300years. In this context, the evaluation of the proposed materials must be performed under accelerated laboratory tests. One type of LLRW consists of ashes that result from the incineration of solid combustible radioactive waste. In Argentina, one of the proposed projects is to place these ashes inside steel drums and immobilized them by a cementation process. The issue to be resolved is whether the steel drums will undergo internal corrosion depending on the presence of certain deleterious species. The aim of the present work is to evaluate the corrosion susceptibility of steel drums containing simulated cemented incineration ashes. To this purpose, a special type of specimen was designed and the corrosion process was followed up for almost 4years. It was found that, although the deleterious effect of chloride is undeniable, corrosion rates are not as high as to compromise the integrity of the steel drums for a design period of 300years.
机译：选择合适的材料来构建用于最终处理放射性废物（储存库）的设施是材料科学的挑战，因为这些设施必须设计成长时间为放射性核素提供限制。在低级放射性废物（LLRW）存储库的情况下，必须保证物种的限制超过300年。在这种情况下，必须在加速的实验室测试下进行所提出的材料的评估。一种类型的LLRW由灰烬焚烧而构成，该灰烬是由固体可燃放射性废物的焚烧产生的。在阿根廷，其中一个拟议的项目是将这些灰烬放入钢桶内并通过胶结过程将它们固定。要解决的问题是根据某些有害物种的存在，钢桶是否会发生内部腐蚀。本作目前的目的是评估含有模拟粘液焚烧灰烬的钢桶的腐蚀敏感性。为此目的，设计了一种特殊类型的样本，腐蚀过程随访近4年。结果发现，尽管氯化物的有害作用是不可否认的，但腐蚀速率不如损害钢桶的完整性300年的设计。

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