MGT 401 Week 3 Discussion 2

Two types of respirators discussed in class this week are air-purifying respirators known as A.P.Rs and supplied-air respirators known as S.A.Rs. Air-purifying respirators utilize special filters to target specific types of hazardous particles such as fumes, dust and mist. In contrast supplied-air respirators offer protection from hazards by supplying air directly to the subject. This is accomplished taking air from a secure container separate from the contaminated area through mask and tubing. Supplied-air respirators offer the highest level of protection against contaminants however their bulkiness brings additional safety concerns and are often very expensive. Air-purifying respirators offer mobility at a lower cost however the type of contaminant must be known in order to be effective. As stated in the text “Similar to playing Russian Roulette, using an APR when the hazard is not fully known means risking exposure to hazardous atmospheres which may not be removed by the particular purifying media. If a material has no odor, such as the case with carbon monoxide and a range of other materials, the users would be breathing contaminated air and working under the premise that they were safe” (Gantt, 2012, p 223). When selecting a respirator one must consider the types of contaminants, the cost considerations of the apparatus, and the mobility and safety concerns associated with the job.   
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