Respiratory Protection

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
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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
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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
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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
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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
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Fit, usage, and maintenance

• A dirty, inoperative respirator will not protect
  you

3d
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Inspection, donning, doffing respirators

• Inspect respirators before each use and during
  cleaning
• Inspect SCBAs monthly and keep cylinders fully
  charged

4a
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Inspection, donning, doffing respirators

• Emergency-use respirators
• inspect monthly
• tags must show inspection results
• Follow manufacturers instructions for
  donning/doffing equipment

4b
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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
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Cleaning, maintenance, and storage

• Respirators must be cleaned to remove
  contaminants/prevent irritation
• Shared respirators must be cleaned before each use

5a
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Cleaning, maintenance, and storage

• Emergency-use respirators must be cleaned after
  each use
• Review Appendix B-2 for cleaning/disinfecting
  instructions
• Only use manufacturers replacement parts

5b
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Cleaning, maintenance, and storage
Storage helps prevent respirators from

• Damage
• Contamination
• Dust
• Sunlight
• Temperature extremes

• Excessive moisture
• Chemicals
• Deformation of the facepiece

5c
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Responding to emergencies

• If the respirator malfunctions, immediately leave
  the work area
• Activate auxiliary self-contained air supply

6a
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Responding to emergencies

• If a sudden hazardous release occurs, don
  emergency escape-only respirators as you exit
  the area

6b
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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
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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
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Medical signs and symptoms

• Coughing
• Wheezing
• Chest pain

7b
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Medical signs and symptoms

• Chest injuries
• Lung diseases
• Cardiovascular conditions

7c
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Medical signs and symptoms

• Heart conditions
• Review Appendix C OSHA Respirator Medical
  Evaluation Questionnaire

7d
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Regulations

• Review the main paragraphs (a through o) of 29
  CFR 1910.134

8a