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Respiratory Protection

Respiratory protection is crucial for safeguarding workers from air contaminants that can result from various operations such as welding, spraying, and degreasing. These contaminants may include dusts, vapors, gases, and oxygen-deficient atmospheres. Understanding the levels of exposure and implementing control measures such as engineering solutions, administrative controls, and personal protective equipment (PPE) is essential. Additionally, proper respirator fit, usage, maintenance, and emergency preparedness are vital to ensure safety in potentially hazardous situations.

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Respiratory Protection

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  1. Respiratory Protection

  2. Why respiratory protection is necessary • Air contaminants/hazardous atmospheres come from a variety of sources • dusts • aerosol mists • metal fumes 1a

  3. Why respiratory protection is necessary • Air contaminants/hazardous atmospheres come from a variety of sources • evaporated vapors • released gases • oxygen-deficient atmospheres 1b

  4. Why respiratory protection is necessary • Many operations generate air contaminants • filling bins with flour • degreasing metal parts • spraying operations • welding 1c

  5. Why respiratory protection is necessary • Find out how much contaminant is in the air • Test the air to find out what the exposures are 1d

  6. Why respiratory protection is necessary • If results show an overexposure, take steps to control the hazard • engineering controls • administrative controls • PPE 1e

  7. Respirator types • Atmosphere-supplying • supplied air • self-contained breathing apparatus (SCBA) • demand • positive pressure • escape-only 2a

  8. Respirator types • Air-purifying • filter • canister or cartridge 2b

  9. Respirator types • Air-purifying • negative pressure • powered air-purifying 2c

  10. Fit, usage, and maintenance • Employees must pass a fit test • quantitative fit • qualitative fit • Use the respirator as it was designed 3a

  11. Fit, usage, and maintenance • Follow operating instructions • If respirators are used to enter an IDLH atmosphere: • one trained, rescue-equipped employee must remain outside • an attendant must maintain communication contact 3b

  12. Fit, usage, and maintenance • During interior structural firefighting • at least 2 employees with SCBA must enter together and stay in contact with each other • at least two people trained and equipped for rescue must remain outside 3c

  13. Fit, usage, and maintenance • A dirty, inoperative respirator will not protect you 3d

  14. Inspection, donning, doffing respirators • Inspect respirators before each use and during cleaning • Inspect SCBAs monthly and keep cylinders fully charged 4a

  15. Inspection, donning, doffing respirators • Emergency-use respirators: • inspect monthly • tags must show inspection results • Follow instructions to inspect and don/doff equipment 4b

  16. Inspection, donning, doffing respirators • Perform seal checks after donning respirator • positive pressure test • negative pressure test • review Appendix B-1 • Never enter a work area without a good respirator seal 4c

  17. Cleaning, maintenance, and storage • Respirators must be cleaned to remove contaminants/prevent irritation • Shared respirators must be cleaned before each use 5a

  18. Cleaning, maintenance, and storage • Emergency-use respirators must be cleaned after each use • Review Appendix B-2 for cleaning/disinfecting instructions • Only use manufacturer’s replacement parts 5b

  19. Storage helps prevent respirators from: Damage Contamination Dust Sunlight Temperature extremes Excessive moisture Chemicals Deformation of the facepiece Cleaning, maintenance, and storage 5c

  20. Responding to emergencies • If the respirator malfunctions, immediately leave the work area • Activate auxiliary self-contained air supply 6a

  21. Responding to emergencies • If a sudden hazardous release occurs, don emergency escape-only respirators as you exit the area 6b

  22. Responding to emergencies • Some employees must be trained and authorized to respond to emergency situations • confined space rescue • release of hazardous chemicals • interior structure firefighting 6c

  23. Medical signs and symptoms • Know how to recognize and report medical signs and symptoms that may limit or prevent the effective use of respirators • Shortness of breath • Dizziness 7a

  24. Medical signs and symptoms • Coughing • Wheezing • Chest pain 7b

  25. Medical signs and symptoms • Chest injuries • Lung diseases • Cardiovascular conditions 7c

  26. Medical signs and symptoms • Heart conditions • Review Appendix C: OSHA Respirator Medical Evaluation Questionnaire 7d

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