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

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Presentation on theme: "Respirator Program. Agenda WorkSafeBC Requirements Definitions Hazard Identification and Risk Assessment Types of Respirators Respirator Selection Fit."— 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 1.Identify hazards 2.Control risks 3.Assess and control remaining hazards 4.Select and provide respirators 5.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 O 2 deficiency can develop from Rotting, rusting, burning Displacement by other gases

17 Types of Respirators

18 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 Facepiece Respirators 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 vapours from 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 Respirators must be selected in accordance with: The WorkSafeBC Regulation CSA Standard Can/CSA-Z Step respirator selection approach

40 Respirator Selection 1.Identify the Breathing Hazard Ensure atmosphere is not oxygen deficient Is there an emergency? Are there hazardous air contaminants?

41 Respirator Selection 2.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 3.Compare with WorkSafeBC Exposure Limits If no exposure limits use positive pressure SCBA Compare workplace concentration with WorkSafeBC exposure limits

43 Respirator Selection 4.Check IDLH Concentration Is concentration less than IDLH? If not, use supplied air respirator

44 Respirator Selection 5.Check Contaminant Properties Inhalation hazard Eye irritation Skin irritant or skin absorption Warning properties / odour threshold Decomposition products

45 6.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 7.Calculate the Hazard Ratio Airborne contaminant concentration / 8- hour TWA Compare with assigned protection factors Choose respirator

47 Respirator Selection 8.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 9.Identify General Type of Respirator Required Air supplying – go to Step 13 or Air purifying – go to Steps

49 Respirator Selection 10.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 11.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

51 Respirator Selection 12.Select Filter or Cartridge Each cartridge protects against specific types of contaminants Must protect against all types Nine classes of filters for particulates Some contaminants have no effective cartridge

52 Respirator Selection 13.Special Requirements Consider other PPE being worn Ask workers for input

53 Respirator Fit Testing

54 Fit Testing 1.User seal check Negative pressure check Positive pressure check 2.Fit Test Quantitative fit test Qualitative fit test

55 Fit Testing User Negative Pressure Seal Check Don respirator and other PPE Block inlet opening Inhale slightly Hold for 10 seconds Facepiece should collapse slightly and not leak

56 Fit Testing User Positive Pressure Seal Check Don respirator and PPE Block exhaust valve Breathe out slightly Hold for 10 seconds Facepiece should bulge out and stay out

57 Fit Testing Must be done by a qualified person Must be documented Must be done at least annually

58 Fit Testing Two types of fit test: 1.Qualitative 2.Quantitative

59 Fit Testing 1.Qualitative fit testing Irritant smoke Smell - Isoamyl acetate (banana oil) Taste – Bitrex, Saccharin

60 Fit Testing Fit Test Exercises 1.Normal breathing 2.Deep breathing 3.Turning the head from side to side 4.Nodding the head up and down 5.Talking out loud 6.Normal breathing

61 Care and Maintenance of Respirators

62 Respirator Care Cleaning Remove filter/cartridges Remove head straps, valves, etc. Wash facepiece with mild soap and warm water

63 Respirator Care Cleaning – continued Rinse facepiece in clean water Disinfect facepiece Dry facepiece Wash valves and air dry Reassemble

64 Respirator Care Inspecting the Respirator Inspect before each use Check for dirt, holes, tears, cracks Rubber / silicone should be flexible Inhalation and exhalation valves Make sure they are there Cracks, dryness Not stuck closed

65 Respirator Care Inspecting the Respirator – continued Head straps Cartridge and filter holders Cartridges and filters

66 Respirator Care Storage Position respirator to prevent damage Dont fold or bend parts Keep in sealed container Seal filters

67 Medical Limitations / Assessment Medical assessment may be required if: Claustrophobia Breathing problems High blood pressure or heart disease Diabetes Seizure disorders Facial skin problems

68 Medical Limitations / Assessment Medical assessment: Type of work being done Types of contaminants and their concentrations Work conditions / environment Type of respirator Duration of use

69 Summary What we have covered: WorkSafeBC Regulation How hazard identification and risk assessments are done The types of respirators available How to choose the right respirator How to do a user fit check

70 Summary You should know – continued How fit testing is done How to clean store and inspect your respirator About medical conditions and assessment

71 Questions


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