口罩防护Respiratory Protection PowerPoint Presentation课件

1、Respiratory ProtectionSession ObjectivesIdentify the hazards of airborne contaminantsIdentify and use appropriate respiratory protectionRecognize the limitations and capabilities of respirators in our workplaceInspect, maintain, and store respiratorsSession Objectives (cont.)Use respirators under da

2、ngerous or emergency conditionsUnderstand procedures for medical evaluations Recognize the medical signs and symptoms that may prevent effective respirator useLocations where respirators are requiredTypes of airborne contaminantsRespirator Use LocationsInhalation HazardsAirborne particlesChemical va

3、por or gasBiological organismsLack of adequate oxygenPrevent inhalation of airborne contaminantsGenerate negative pressure in face pieceGenerate positive pressure in face pieceAir is passed through a filter, sorbent, or catalyst that traps contaminantsHow Respirators WorkWhen Are Respirators Needed?

4、When other controls are inadequate or not feasibleDuring installation of engineering controlsDuring maintenance operationsWhile performing nonroutine tasksFor emergency responseAssigned Protection Factor (APF)The minimum level of protection APF 10 means one-tenth of the contaminant may be inhaledEac

5、h respirator must have an APF for each contaminantAir-Purifying Respirator (APR)APRs are negative pressureSimply filter the air, not supply oxygenParticulateGas and vaporCombinationLimited to non-IDLH atmospheres, maximum APF of 50Half-Face APRMaximum APF of 10No protection for the face or eyesSight

6、 is not impairedNot as heavy as full-face respiratorPowered Air-Purifying Respirator (PAPR)Maximum APF 25 to 1000A blower forces ambient air through filterNo separate or self-contained air supplyProhibited Uses of APR and PAPRIDLH atmosphere, including oxygen-deficientUnknown airborne contaminantsCo

7、ntaminants with poorly understood exposure limitsSpecific chemicalsContaminant concentrations exceed MUC limitsMUC=PEL x APFDust Mask (Filtering Face Piece)Negative pressureFilter removes particulates (dust)Hazard protection is very limitedEscape-OnlyIt is intended only for emergency exitUsed mainly

8、 for IDLH atmospheresImage courtesy of Elmridge Protection Products, LLCInhalation Hazards and RespiratorsQuestions?Do you understand:The hazards of airborne contaminants?The types of respirators used at the facility?Respirator SelectionThe physical state of the contaminantsContaminant concentration

9、Oxygen deficiencyWarning properties of the contaminant(s)Potential for an IDLH atmosphereLength of time of respirator useRespirator Selection (cont.)The workload of the wearerThe working environmentThe proper filter media for the given contaminant Potential hazard of skin contact with contaminantsPo

10、tential hazard of eye contact with contaminantsRespirators for Non-IDLH Use“End-of-service-life indicator,” or change scheduleOxygen-deficient atmospheres tableRespirator Filter Color CodesAcid gas (e.g., sulfuric acid)whiteAcid gas and organic vaporyellowAcid, ammonia, and organic vaporsbrown Acid

11、gas, ammonia, carbon monoxide, and organic vaporsredAmmoniagreenRespirator Filter Color Codes (cont.)Carbon monoxide gasblueChlorinewhite and yellowDust, fumes, and mists (nonradioactive)orangeOrganic vaporblackOther vapors and gasesoliveQualitative Fit TestNegative pressure test for APRsPAPRs and a

12、tmosphere-supplying in negative pressure modeSubjectivesmell or tasteQuantitative Fit TestNumeric measurementfit factorof leakage into the respiratorFor negative-pressure APRs, exposure levels greater than 10 times the occupational exposure limitCheck the SealNo facial hair or glasses are allowed th

13、at prevent a tight sealThe face piece seal is paramountPerform a seal check each time you put on the respiratorConduct a positive and negative pressure checkVoluntary Use of RespiratorsYou can use your own respirator if it does not create a hazardRead the information for voluntary users of respirato

14、rs Program for nonrequired usersNo program required if only dust masks are usedInspect Respirator CarefullyInspect respirator before each use and during cleaningEmergency respiratorsCheck elastic parts for pliability and deteriorationReport any problems or defectsAPRsMaintain and Clean ComponentsTos

15、s out dust masksRemove filtersWash and rinseCarefully replace valvesDry with cloth or air dryReassemble, then testStore ProperlyProtect equipment from damage, sunlight, or contaminationStore dry respirator and cartridges in a clean container or bagDo not allow the face piece to be distortedRespirato

16、r Care and Use Questions?Do you understand:Your responsibilities for the care and use of respirators?The respiratory protection plan or dangerous atmospheres?Medical EvaluationInitial medical evaluation required before fit testing and useAll medical evaluations must be confidentialEmployees may disc

17、uss with physicianFollow-up evaluations must be conducted if conditions change29 CFR 1910.134 requires:A written respiratory protection planEmployee trainingMedical evaluationFit testingProviding respirators at no cost to employeeRegulatory RequirementsEmployers General RequirementsUse NIOSH-approve

18、d respirators onlyEvaluate the workplace hazardsSelect respirators from multiple models and sizesWhere exposure to hazards cant be estimated, consider it as IDLHWritten Respiratory Protection PlanWritten operating proceduresMedical examinationsProgram evaluationAdditional Plan RequirementsMust be site specificMust have a program administratorWhats Wrong Here?Worker applying trichloroethane in a confined spaceHalf-face respiratorBecomes unconsciousList the hazardsWhat Can Be Done?What are the proper