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Respirator Program

Respirator Program

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Respirator Program

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Presentation Transcript

  1. Respirator Program

  2. Agenda • WorkSafeBC Requirements • Definitions • Hazard Identification and Risk Assessment • Types of Respirators • Respirator Selection • Fit Testing

  3. WorkSafeBC Regulation • Workers who are or may be exposed to air contaminants that exceed: • an 8-hour TWA • ceiling limit, or • short term exposure limit

  4. Definitions • Air purifying respirator • Canister and cartridge • Escape respirator • Fit check

  5. Definitions • Fit test • Hazard Ratio • HEPA filter • IDLH

  6. Definitions • Maximum Use Concentration • Qualitative fit test • Quantitative fit test • SCBA

  7. Respiratory Hazard Identification and Risk Assessment

  8. Hazard Identification & Risk Assessment • Identify hazards • Control risks • Assess and control remaining hazards • Select and provide respirators • Fit test, train and issue respirators

  9. Hazard Identification & Risk Assessment • When a respiratory hazard is identified: • Determine nature of contaminant • Determine probability of exposure • Determine frequency of exposure • Determine permissible exposure limit

  10. Hazard Identification & Risk Assessment • Breathing Hazards • Particles (dusts, fibres, mists, fumes • Gaseous (gases and vapours) • Oxygen deficiency • Combination hazards

  11. Hazard Identification & Risk Assessment • Particle Hazards – Dusts and Fibres • Formed by breakdown of solids • Sanding, milling, cutting crushing, grinding • Irritate the airways • Can cause disease • Asbestos, silica dust

  12. Hazard Identification & Risk Assessment • Particle Hazards - Mists • Very small liquid droplets • Formed by spraying, shaking, mixing, stirring • Irritate or damage exposed skin, eyes, lungs, airways • Damage to internal organs

  13. Hazard Identification & Risk Assessment • Particle Hazards - Fumes • Tiny solid particles • May be formed by welding, smelting, soldering, brazing • Irritation to serious lung and nerve damage

  14. Hazard Identification & Risk Assessment • Gaseous Hazards • Gases – Carbon monoxide, Chlorine

  15. Hazard Identification & Risk Assessment • Vapours • Mix with air • Solvents, gasoline, acetone • Enter blood stream • May cause damage to nerves and internal organs

  16. Hazard Identification & Risk Assessment • Oxygen Deficiency • Normal air contains 21% oxygen • O2 deficiency can develop from • Rotting, rusting, burning • Displacement by other gases

  17. Types of Respirators

  18. Types of Respirators • Types of respirators • Half facepiece • Full facepiece • Air Purifying Respirators (APR) • Air Supplying Respirators • Escape Respirators

  19. Types of Respirators • Half facepiece respirators • Cover only nose, mouth and chin • Available as • Filtering facepiece (disposable), or • Elastomeric facepiece with cartridges

  20. Types of Respirators • Disposable Half Facepiece Respirators • Known as single-use or disposable • No replacement parts • Must have two straps

  21. Types of Respirators • Elastomeric Half Facepiece Respirators • Made of silicone, thermoplastic or rubber • Cartridges or filters • One-way valves • Greater level of protection than disposable respirators

  22. Types of Respirators • Full FacepieceRespirators • Cover full face • Silicone, thermoplastic or rubber • One or more cartridges or filters • Clear lens • Used when contaminants irritate the eyes • Offer greater level of protection

  23. Types of Respirators • Air Purifying Respirators • Use a filter, cartridge or canister • Must know the concentration of the contaminant • Not for oxygen deficient atmospheres • 2 types: non-powered and powered

  24. Types of Respirators • Non-powered Air Purifying Respirators • Either half face or full face • Similar operation in both

  25. Types of Respirators • Powered Air Purifying Respirators (PAPR) • Battery powered blower • Easier to breath • More protective than non-powered • Still air purifying only

  26. Types of Respirators • Powered Air Purifying Respirators – continued • Available in • Half face • Full face • Hood • Helmet

  27. Types of Respirators • Escape Respirators • For emergency escape only • Never used for entry into contaminated area • Must be carried on worker in potentially hazardous area • Air purifying or air supplying

  28. Types of Respirators • Filters and cartridges • Remove specific contaminants from the air • Must use proper cartridge • Only effective up to certain concentration of contaminant

  29. Types of Respirators • Particulate Filters • Nine classes of particulate • N series (Not resistant to oil) • R series (Resistant to oil) • P series (Oil proof)

  30. Types of Respirators • Gas and Vapour Cartridges • Remove gases and vapoursfrom air • Trap or react with contaminants • Act like sponges • Limited capacity • Breakthrough

  31. Types of Respirators • Air purifying canisters • Work like cartridges • Larger and last longer • Worn on chin, chest or back

  32. Types of Respirators • Cartridge Warning Properties • Contaminants must have warning properties • Smell, taste, or breathing irritation • Warning properties differ for each contaminant • Odour threshold

  33. Types of Respirators • Cartridge / Filter Maintenance • Store in sealed container • Replace filters / cartridges regularly • Date filters / cartridges when installed • Match cartridges with contaminants

  34. Types of Respirators • Air Supplying Respirators • Supplied air (airline) • Self-contained breathing apparatus (SCBA)

  35. Types of Respirators • Supplied Air Respirators • Provide clean air • High pressure or low pressure systems • Must be approved airlines

  36. Types of Respirators • Supplied Air Respirators – continued • Hood or helmet • No face seal • No resistance to breathing • Full face airline • Face seal • Positive pressure minimizes leaking

  37. Types of Respirators • Self Contained Breathing Apparatus • Provides air from cylinder carried by wearer • Highest level of protection • Permitted in IDLH conditions

  38. Respirator Selection

  39. Respirator Selection • Respirators must be selected in accordance with: • The WorkSafeBC Regulation • CSA Standard Can/CSA-Z94.4-93 • 13 Step respirator selection approach

  40. Respirator Selection • Identify the Breathing Hazard • Ensure atmosphere is not oxygen deficient • Is there an emergency? • Are there hazardous air contaminants?

  41. Respirator Selection • Check the concentration of each contaminant • Monitor to determine concentration • Done by knowledgeable person • Use historical measurements if available • If unknown concentration use positive pressure SCBA

  42. Respirator Selection • Compare with WorkSafeBC Exposure Limits • If no exposure limits use positive pressure SCBA • Compare workplace concentration with WorkSafeBC exposure limits

  43. Respirator Selection • Check IDLH Concentration • Is concentration less than IDLH? • If not, use supplied air respirator

  44. Respirator Selection • Check Contaminant Properties • Inhalation hazard • Eye irritation • Skin irritant or skin absorption • Warning properties / odour threshold • Decomposition products

  45. Assigned Protection Factor • Each type of respirator is assigned an APF • Examples: • Half facepiece (non powered): 10 • Full facepiece (non powered): 50 • Full facepiece (powered): 100 • SCBA (positive pressure): 10,000

  46. Respirator Selection • Calculate the Hazard Ratio • Airborne contaminant concentration / 8-hour TWA • Compare with assigned protection factors • Choose respirator

  47. Respirator Selection • Calculate Maximum Use Concentration (MUC) • 8-hour TWA x APF for respirator being considered • Air purifying respirators up to the MUC • If over MUC, supplied air must be used

  48. Respirator Selection • Identify General Type of Respirator Required • Air supplying – go to Step 13 or • Air purifying – go to Steps 11 - 13

  49. Respirator Selection • Consider State of Contaminant • For air purifying respirators • If contaminant is a gas or vapour go to Step 11 • If contaminant is a particulate only go to Step 12

  50. Respirator Selection • Warning Properties • Smell, taste, breathing irritation • If no adequate warning properties use: • Air-supplying respirator • Air-purifying respirator with end-of-service-life indicator • Air-purifying respirator with cartridges changed out regularly