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Atmospheric hazards exist in a variety of workplaces.
At times, these hazards can be completely eliminated or reduced by using ventilation systems or other exposure control methods available. Respirators may become necessary when source control methods are not available or do not completely control atmospheric hazards. When respirators become the last line of defense to take against atmospheric hazards the right knowledge and actions become critical to making sure that respirators can provide safe and reliable protection. Wearing respirators without consistent and site-specific guidance ensured by a good respirator program can leave users with a false sense of security and lead to dangerous consequences. Chapter 296-62, Part E .