Lowry P L, Wheat L D, Bustos J M
Am Ind Hyg Assoc J. 1979 Apr;40(4):291-9. doi: 10.1080/15298667991429615.
The fit-test method for powered air-purifying respirators described here allowed quantitative determination of the leakage of PAPRs that offered PFs ranging from 50 to greater than 10,000. Five types of PAPRs were tested on 10 subjects selected from a test panel representing a wide range of facial sizes. PAPRs tested provided all subjects with PFs of 1000 or greater when operated with the blowers on, while PFs observed with the blower off, for two tight-fitting facepieces, ranged between 50 and 100. The exercises used in these test procedures are believed to be typical of movements made by persons wearing respiratory protective equipment and performing light work. Studies of PFs obtained by workers wearing respiratory protective equipment in industry would be necessary to establish how well the developed laboratory test methods predict the level of protection offered to workers wearing the equipment.
此处描述的动力送风过滤式呼吸器的适合性测试方法，能够对防护因数（PF）范围从50至大于10000的动力送风过滤式呼吸器的泄漏情况进行定量测定。从代表各种面部尺寸的测试小组中挑选了10名受试者，对五种类型的动力送风过滤式呼吸器进行了测试。测试的动力送风过滤式呼吸器在风机开启时能为所有受试者提供1000或更高的防护因数，而对于两款紧密贴合的面罩，在风机关闭时观察到的防护因数在50至100之间。这些测试程序中使用的动作被认为是佩戴呼吸防护设备并从事轻体力工作的人员所做动作的典型代表。有必要对工业中佩戴呼吸防护设备的工人所获得的防护因数进行研究，以确定所开发的实验室测试方法在预测为佩戴该设备的工人提供的防护水平方面的效果如何。
