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Laboratory and field evaluation of dust collector bags for reducing dust exposure of roof bolter operators

机译：减少集尘室操作员灰尘接触的集尘袋的实验室和现场评估

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The National Institute for Occupational Safety and Health conducted laboratory and field tests to evaluate the effectiveness of dust collector bags for reducing dust liberation and operator exposure from a roof bolter's dust collection system. The laboratory tests evaluated the bag's effectiveness to contain dust and the effect on canister filter loading in both a bag and bagless condition. The dust emissions from the collector's exhaust were also measured in each condition during laboratory testing. Laboratory results show that nearly 100 percent of the test dust fed into the collector was captured by the dust bags. Loading and pressure drop on the dust collector's canister filler is greatly decreased when using the bags, enabling longer periods of drilling without filter removal/cleaning. The field results showed that, even though dust standards were met, respirable dust in exhausted emissions was reduced around the bolter. Laboratory and field results show that benefits from use of the bags are realized in all areas of operator exposure.
机译：美国国家职业安全与健康研究所进行了实验室和现场测试，以评估集尘袋减少屋顶锚杆机集尘系统释放的灰尘和减少操作员暴露的有效性。实验室测试评估了袋子在装袋和不装袋子的情况下容纳灰尘的效果以及对筒式过滤器负荷的影响。在实验室测试期间，在每种情况下都测量了收集器排气中的粉尘排放。实验室结果表明，送入收集器的测试粉尘几乎有100％被集尘袋捕获。使用滤袋时，集尘器的滤罐填充物上的负载和压降大大降低，从而可以延长钻孔时间，而无需拆卸/清洁过滤器。现场结果表明，即使达到了粉尘标准，抽气机周围的废气中可吸入的粉尘也减少了。实验室和现场结果表明，在操作员接触的所有区域，都可以从使用袋子中受益。

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