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Transcript of Respirator Program
1AgendaWorkSafeBC RequirementsDefinitionsHazard Identification and Risk AssessmentTypes of RespiratorsRespirator SelectionFit TestingToday we will cover the following information:WorkSafeBC requirements for a respiratory protection programDefinitionsHazard Identification and Risk AssessmentTypes of RespiratorsRespirator SelectionFit TestingRespirator CareMedical Limitations and AssessmentsIf your organization uses SCBA equipment you should explain that detailed instruction on the use of this equipment will be provided at another time.Use this overhead to outline what you intend to present during this presentation. Expose the lines one at a time reading the line as it is exposed.2WorkSafeBC RegulationWorkers who are or may be exposed to air contaminants that exceed:an 8-hour TWAceiling limit, or short term exposure limitWorkers must be protected who are or might be exposed to air contaminants that exceed an 8-hour TWA, ceiling limit, or short term exposure limit
Examples of possible air contaminants that municipal workers could be exposed to may include:
Ammonia from refrigeration units and map/blue printing machinesAsbestos found in asbestos pipe, pipe insulation, brake and clutch linings and building materialsCapsicum spray used in crowd control and prisoner restraintCommunicable diseases from persons who must be restrained or treated Carbon monoxide in garages and vehicle repair shopsChlorine from water treatment, sewage treatment and swimming pool purification systemsDusts encountered during street sweeping, cutting PVC or clay pipeGlues and adhesives used in carpentry shops and building maintenanceHerbicides used by parks staffPesticides used by park workers and gardenersHydrogen sulfide found in sewer systemsIsocyanate paints when sprayed in paint shopsLead found in some paintsLime used by gardeners and sewage treatment workersMetal particulate released while grinding steel pipeMethane gas found in the sanitary sewer or storm drain systemMould in walls as a result of water damageOzone as a result of ozone generation for pool or water treatment facilities, or welding aluminumSilica dust generated during cutting, drilling or grinding concrete cutting and rockSolvents and cleaners used in painting and maintenanceWelding fumes in shop areas and during air arc gouging and cuttingWood dust
3DefinitionsAir purifying respiratorCanister and cartridgeEscape respiratorFit checkAir purifying respirator - A respirator with an air purifying filter, cartridge, or canister that removes specified air contaminants by passing ambient air through the air-purifying element. Canister and cartridge - A container with a filter, sorbent, or catalyst, or combination of these items, which removes specific contaminants from the air, passed through the container. Escape respirator - A respirator intended to be used only for emergency exit, not for work. Fit check - A negative- or positive-pressure check of a respirators fit, performed by the user prior to use, in accordance with the respirator manufacturers instructions. Also called a seal check.
4DefinitionsFit testHazard RatioHEPA filterIDLHFit Test - Fit test - A procedure to qualitatively or quantitatively evaluate the fit of a respirator on an individual. Hazard Ratio - The airborne concentration of a substance divided by its 8-hour TWA limit.HEPA filter - A filter that is at least 99.97 percent efficient in removing air borne particles of 0.3 micrometers in diameter. IDLH - An atmosphere containing a substance at a known concentration, or an unknown concentration, that may pose an immediate threat to life, would cause irreversible adverse health effects, or would impair an individual's ability to escape from a dangerous atmosphere. 5DefinitionsMaximum Use ConcentrationQualitative fit testQuantitative fit testSCBA
Maximum Use Concentration - The concentration determined by multiplying the 8-hour TWA limit for an air contaminant by the assigned respirator protection factor selected from Table 8-1 of the Occupational Health and Safety Regulation, or as otherwise determined by WorkSafeBC.Qualitative fit test - A pass/fail fit test to assess the adequacy of respirator fit that relies on the wearers ability to smell a test agent such as isoamyl acetate (banana oil) or taste a test agent such as Bitrex or Saccharine. Quantitative fit test - In quantitative fit testing, specialized equipment is used to actually measure the amount of the test agent leaking into the facepiece. The concentration of the test agent outside the facepiece is compared with the concentration inside the facepiece to determine the level of protection provided by the respirator.SCBA - An atmosphere-supplying respirator for which the breathing air source is designed to be carried by the user in a tank with a harness. 6Respiratory Hazard Identification and Risk AssessmentHazard Identification & Risk AssessmentIdentify hazardsControl risksAssess and control remaining hazardsSelect and provide respiratorsFit test, train and issue respirators
First, a survey of the workplace is done to identify situations where there are breathing hazards.The second step in our Respirator Program requires that if hazards are identified, the next step is to try and reduce the risk from those hazards by such control measures as:Eliminating or substituting the product being used.Instituting engineering controls (vents, screens, protective measures, etc.)Instituting administrative controls (procedures that will protect the worker).For those hazards which remain, there must be a formal assessment.Explain that these assessments have been completed. You may wish to show or distribute examples of completed risk assessment documentation.As a result of the risk assessments, decisions have been made on the types and uses of respirators, which are to be used on Corporation worksites.Determine the type of respiratory protection that is best suited to the situation.The final requirement of a respirator program is to provide respirators, to ensure proper fit and to ensure training of workers.Issue the respirators once the workers are fit tested.
8Hazard Identification & Risk AssessmentWhen a respiratory hazard is identified:Determine nature of contaminantDetermine probability of exposureDetermine frequency of exposureDetermine permissible exposure limitThe purpose of this overhead is to give the workers some of the background on how the hazards were identified and assessments were completed on corporation worksites. You may wish to use completed documentation examples in appendix B, appendix C and appendix D to show how the contaminants have been identified and the risks are quantified within the organization.9Hazard Identification & Risk AssessmentBreathing HazardsParticles (dusts, fibres, mists, fumesGaseous (gases and vapours)Oxygen deficiencyCombination hazardsIntroduction slide. Details of each item are discussed in detail in the following slides.10Hazard Identification & Risk AssessmentParticle Hazards Dusts and FibresFormed by breakdown of solidsSanding, milling, cutting crushing, grindingIrritate the airwaysCan cause diseaseAsbestos, silica dustTake a moment to ask the class if they can give examples in the workplace where there might be particle hazards from sanding, milling, cutting, crushing, grinding or drilling. Emphasize that some of these particles can cause long-term and lethal health risks (asbestos or silica dust).
11Hazard Identification & Risk AssessmentParticle Hazards - MistsVery small liquid dropletsFormed by spraying, shaking, mixing, stirringIrritate or damage exposed skin, eyes, lungs, airwaysDamage to internal organsSome mists are strongly irritating and some can cause damage to the liver or kidneys because ultimately they can be absorbed into the bloodstream through the lungs if there is prolonged exposure.
Ask attendees for any worksite examples of spraying, shaking, mixing or stirring that might cause drops. One example could be a spray can. 12Hazard Identification & Risk AssessmentParticle Hazards - FumesTiny solid particlesMay be formed by welding, smelting, soldering, brazingIrritation to serious lung and nerve damageExplain that the fumes are actually very tiny, solid particles that are boiled off in the process. Exposure can range from irritation through flu-like symptoms to serious nerve and lung damage(long-term exposure to lead will fumes)
Ask attendees for any worksite examples of welding, smelting, soldering or braising.
13Hazard Identification & Risk AssessmentGaseous HazardsGases Carbon monoxide, Chlorine
Gases are formed from substances that are normally liquid at room temperature (such as solvents and gasoline). 14Hazard Identification & Risk AssessmentVapoursMix with airSolvents, gasoline, acetoneEnter blood streamMay cause damage to nerves and internal organsVapours will mix with the surrounding air. One can always expect vapours when liquids are present. Like mists, the chemicals of these vapours can enter the bloodstream and damage the nervous system and internal organs.
Ask for examples of where gas and vapour hazards may occur on the worksite.
15Hazard Identification & Risk AssessmentOxygen DeficiencyNormal air contains 21% oxygenO2 deficiency can develop fromRotting, rusting, burningDisplacement by other gasesHold up a respirator and ask the class if a respirator will solve oxygen deficiency. Ask the class what type of apparatus would be required in an oxygen deficient atmosphere. They should respond with some form of air supplied apparatus.
16Types of RespiratorsTypes of RespiratorsTypes of respiratorsHalf facepieceFull facepieceAir Purifying Respirators (APR)Air Supplying RespiratorsEscape Respirators
This slide is an introduction to the types of respirators with more d