使用商用产品从敏感设备相关材料中去除60Co,137Cs和241Am的污染
Jaleh Semmler1, Arshad Toor1, Zahid Khan1
1Canadian Nuclear Laboratories, Chalk River Laboratories, 286 Plant Road, Chalk River, Ontario, K0J 1J0, Canada.
概括
商用污染清除产品有效地清洁了被-60,-137和-241污染的敏感设备. 移除效率因放射性核素和基质复杂性而异,而美洲-241和复杂的几何形状带来了更大的挑战.
科学领域:
- 辐射保护 辐射保护
- 环境科学环境科学
- 材料科学是一种材料科学.
背景情况:
- 敏感设备可能会被放射性物质污染.
- 有效的净化方法对于设备的安全和重复使用至关重要.
- 现有的污染清除产品往往针对化学或生物剂,而不是放射性污染物.
研究的目的:
- 评估商业污染清除产品对放射性污染物的有效性.
- 评估非放射性污染产品对放射性/核材料的适用性.
- 调查基板材料,放射性核素化学和几何学对净化有效性的影响.
主要方法:
- 在各种材料 (不钢,,玻璃,混合材料,电子产品) 上测试了七种商业净化产品.
- 使用的放射性核化物:-60 (Co60),-137 (Cs137) 和美洲-241 (Am241).
- 在平面优惠券和复杂几何形状上评估了对污染的消毒,包括一个功能性的钟.
主要成果:
- 许多经过测试的产品在清除各种基板方面表现出有效性.
- 删除Am比删除Co60或Cs更具有挑战性.
- 除污染效率随着基质复杂度的增加以及某些材料的显著下降.
结论:
- 一些商业污染清除产品适用于放射性/核材料污染.
- 基板材料,放射性核素类型和几何复杂性是影响脱污成功的关键因素.
- 可能需要进一步的研究来优化对具有挑战性的放射性核素和复杂设备几何形状的净化.
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