1. Respiratory
Protection

2. Outline Classroom Hands-on Introduction Terminology Respirator Program
Cleaning
Inspection
Fit testing

3. Training Goals
You should understand the extent of the requirements of a respiratory protection program.
You should understand the limitations of the program and your respirator.

4. Permissible Practices
Engineering and administrative controls before respirators.
Engineering: substitution, minimization, isolation, ventilation controls.
Administrative: scheduling or rotation of work.
Maintenance and Research are areas where respirator use is still fairly common.

5. Exposure
Exposure is the concentration of air contaminant

6. Exposure Assessment: Hydrochloric Acid
According to MSDS for Hydrochloric Acid, recommended Personal Protective Equipment should include:
Chemical goggles or face shield.
Chemical resistant gloves.
Clothing, to avoid skin contact.
Respiratory protection based on airborne levels of acid vapor.

7. Exposure Assessment: Muriatic Acid
According to MSDS for muriatic acid, recommended personal protective equipment should include:
Chemical goggles or face shield and chemical goggles.
Chemical resistant gloves
Coveralls, boots, or apron to avoid skin contact.
Respiratory protection based on airborne levels of contaminants.

8. Process Selection
Physical Plant’s respirator program has a complete “process selection” chart in your handouts
Power Plant hasn’t developed such a tool yet.
Other departments – ?

9. Exposure Acronyms
PEL - Permissible Exposure Limit
TWA - Time Weighted Average
STEL - Short Term Exposure Limit
C - Ceiling Limit
TLV - Threshold Limit Value
IDLH - Immediately Dangerous to Life and Health
AL - Action Level

10. Explanation of Exposure Terms
Blank Chart

11. Exposure Chart
Seasoned Worker

12. Exposure Chart
Supervisor

13. Exposure Chart
Outside Contractor

14. Asbestos Exposure Limits

15. Types of Respirators: Fit
Tight-fitting
Loose-fitting

16. Tight fitting respirators

17. QuickLatch Respirator
The only respirator with the easy on and off latching system. Just flip the latch and the respirator slides off the face. Close the latch and the respirator slides back into its original fitting position.

18. Loose-fitting respirators

19. Classes of Respirators: Positive and Negative Pressure
Positive pressure
The sandblasting helmet system is a positive pressure respirator
Negative pressure
North 7700 is a negative pressure respirator
Disposable masks

20. Positive Pressure Respirators
When inhaling, the pressure inside the respirator is kept higher than outside the respirator

21. Examples: positive pressure respirators
Powered air purifying respirator

22. Examples: positive pressure respirators

23. Examples: positive pressure respirators
Atmosphere supplying respirator
Supplied air respirators
Self-contained breathing apparatus

24. Examples: escape-only respirators
Can not be used for entry

25. Negative Pressure Respirators
When inhaling, the pressure inside the respirator is less than outside the respirator

26. Examples: negative pressure respirators
Filtering facepieces or Dust masks

27. Examples: negative pressure respirators
Use for sensitizers like allergens?
Immunologic asthma develops after a variable period of time during which "sensitization" to an agent present in the workplace takes place
If sensitization occurs, it may follow the first exposure, or may not occur until after exposure has continued for a long time.

28. Voluntary and Mandatory
Dust masks are being used for protection against biological agents such as Anthrax
Voluntary Use
One page OSHA mandatory “Voluntary Use” form required
Mandatory use of dust masks kick in the full respirator requirements

29. Examples: negative pressure respirators
Air-purifying respirator
North 7700

30. Negative Pressure Respirators: filters
Color coded
Made specific for a single manufacturers line of respirators

31. Filters used against dust: HEPA
High Efficiency Particulate Air (magenta ???)
HEPA-only or combination filter
Pancake

32. Filters used against vapors: Cartridges or Canisters
Cartridges are the most common type.
OV (black)
OV/AG (bl/yellow)
OV/HEPA
OV/AG/pancake HEPA

33. Filters used against vapors: Cartridges or Canisters
Photo from cover of Chronicle of Higher Education

34. Respirators in the News
Soldiers prepared for chemical warfare during Gulf War
(photo from Science magazine, Feb. 2001)

35. Service Life End of service life indicators Service life calculations
mercury
Service life calculations

36. Factors that can Reduce Cartridge Service Life
Exertion Level
Cartridge Variability
Temperature
Humidity
Multiple Contaminants

37. Cartridge Service Life Estimates

38. Fit factors We’ll talk about this at the end, if time permits.
Particulate Respirator
Gas & Vapor Respirator
Combination Respirator

39. Latex Allergy
Latex allergy can result from repeated exposures to proteins in natural rubber latex. Exposure can be due to skin contact with a latex-containing item or inhalation of the proteins. Reactions can range from skin rash to anaphylaxis and shock. Some items that include latex are gloves, medical supplies, respirators, rubber bands, balloons, and baby bottle nipples.
Respirators are available in rubber and silicone. The silicone masks can be used by those with latex sensitivities