持续使用和去除石棉水泥产品的暴露危险
1Occupational Knowledge International, 4444 Geary Boulevard, Suite 208, San Francisco, CA 94118, United States.
Annals of work exposures and health
|November 11, 2023
概括
在切割和移除石棉水泥 (AC) 产品时,工人面临着严重的石棉暴露风险. 许多常见的任务超过了空气中安全的纤维限制,增加了与石棉有关的疾病的终身风险.
科学领域:
- 职业健康 职业健康 职业健康
- 环境科学 环境科学
- 材料科学 材料科学 材料科学
背景情况:
- 石棉水泥 (AC) 材料在全球范围内广泛用于建筑和基础设施.
- 尽管市场缩,但在许多国家,交流产品仍然普遍用于水管和屋顶等应用.
- 职业接触石棉纤维对健康构成重大风险.
研究的目的:
- 在AC产品的安装,维护和拆除过程中审查和总结空气中的石棉暴露水平.
- 评估与涉及交流材料的常见工作实践相关的暴露范围.
- 评估遵守职业暴露限值的情况.
主要方法:
- 编制和分析已公布和未公布的关于空气中的石棉暴露的报告.
- 专注于基于任务的暴露数据,从切割和移除交流管道,屋顶和冷却塔部件.
- 暴露数据的统计分析,包括逻辑正常分布的拟合.
主要成果:
- 来自切割交流管的基于任务的曝光率在11.3至129.0 f/cm3 (平均53.8 f/cm3) 之间.
- 来自切割AC板和屋顶的曝光率从1.3到130.0f/cm3不等 (平均24.0f/cm3).
- 超过86%的交流板任务和100%的交流管道任务超过了美国的短期外出限制.
结论:
- 切割和移除交流产品经常导致空气中的石棉暴露超过安全限值.
- 全球范围内不断使用交流材料导致间歇性高暴露.
- 这些暴露与一生中患石棉相关疾病的风险增加有关.
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