Engineering and Construction
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Introduction Respiratory protection is required in a number of different work situations where the personnel are exposed to harmful substances that may be inhaled or ingested. Such situations involve work areas where there is harmful dust, smoke, gases, sprays, fogs, mists and vapors.


(OSHA, 2011) However the kind of respiratory protection required for each situation is different and should be used accordingly to ensure maximum damage protection. Sanding Fiberglass in Open Air Fiberglass is used extensively in applications relating to HVAC (for ductwork and acoustical control) as well as structural components such as cooling tower stacks. Fiberglass may need to be grinded once it has set into place for adjustments or for modifications. The grinding produces fiberglass dust that is more dangerous than fiberglass fibers. The size of the dust particles is smaller than the fibers so they can be transported quicker to the lungs. Given the situation that grinding is taking place in an open environment it can be assumed that the oxygen levels pose no serious concerns. The only real danger emerges from the inhalation of the fiber glass dust produced by grinding. Fiberglass dust protection is offered by using NIOSH approved N95 respirators. The use of either half face or full face piece respirators should be done after an assessment form EHIS to determine if the personnel should be placed in a complete respiratory protection program. (EHIS, 2011) The NIOSH N95 respirators block out fiberglass and other small dust particles and offer a breathing system that extracts ambient air and filters it before inhalation. ...
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