密闭空间作业职业病危害防护ConfinedSpaceTraining课件

ConfinedSpacesOfficeofEnvironmentalHealth&SafetyEastCarolinaUniversity210EastFourthSt.Greenville,NC27858(252)328-6166RescuersAccountforOver60%ofConfinedSpaceFatalitiesConfinedSpaceTragediesThreeconstructionsupervisorsdiefromasphyxiationinamanhole.Oxygenlevels18.5–20andMethanelevels300–600ppm

RegulatoryRequirementOSHA29CFR1910.146:Permit-RequiredConfinedSpaces-(Jan1993)IdentifyConfinedSpacesinWorkplaceIdentifyhazardsinthesespacesIdentifyproceduresforcontrollingthesehazardsTrainemployeesonconfinedspaceentryKeeprecordsofcompliance&trainingforallconfinedspaceactivitiesWhatisa

ConfinedSpace?LargeenoughthatanemployeecanenterandperformassignedworkHaslimitedorrestrictedmeansforentryorexitNotdesignedforcontinuousemployeeoccupancyExamplestankspitstunnelsvaultsboilerssewersshaftsventilationductscrawlspacesECUConfinedSpacesMainCampusNameDescriptionLocationPermitRequiredSpaceBoilers#1-4Boiler14thSt.SteamPlantYesDATankTank14thSt.SteamPlantYesCondensateTankTank14thSt.SteamPlantYesSteamTunnelManholeMainCampusYesAllSteamManholesManholeMainCampusYesAllElectricalManholesManholeMainCampusYesAllSanitarySewerManholesManholeMainCampusYesAllStormSewerManholesManholeMainCampusYes

CrawlSpacesCrawlSpaceMainCampusNoSurgeTank

VaultStudentRecCenterNoSteamCloud

VaultJoynerLibraryPlazaNoECUConfinedSpacesHealthSciencesCampusNameDescriptionLocationPermitRequiredSpaceAllManholesManholeHSCYesAllStormDrainLinesOpenLinesHSCNoBackflowVault-LSA#2VaultHSCNoBackflowVault-behindSteamPlantVaultHSCNoBoilers(#1,2,&3)BoilerUtilityPlantYesIncinerator(Upper&LowerChambers)ChamberUtilityPlantYesDATankTankUtilityPlantYesPipeChasebyHVACOfficeVSUtilityPlantYesHighVoltageUnderMainSwitchGearVTUtilityPlantYesFumeExhaustPlenumRoofVBBrodyYes8thFloorMech.RmP3ExhaustPlenumVSBrodyYesMechRm0031stFloorPitBiotechNoMechRm155TankTankWarrenLifeSciencesYesMechRm155PitPitWarrenLifeSciencesNoCourtyardSteamPitPitLeoJenkinsYesAllManholesandPitsManholeWestResearchYesAtmosphericHazards

OxygenLevels-below19.5%orabove23.5%

Flammable/Explosive–exceeds10%ofLowerExplosiveLimit(LEL)

ToxicSubstances–exceedPermissibleExposureLimits(PEL)OxygenDeficiencyOxygenContent(%byvolume)SignsandSymptoms(atAtmosphericPressure)19.5%Minimumpermissiblelevelsthatworkcanbeperformedwithoutrespirators.Belowthislevel,workersshallberequiredtowearsuppliedairrespirators.17%Hypoxiasymptoms,acceleratedbreathingandheartrateappear14-16%Acceleratedbreathing,increasedheartrate,poormuscularcoordination,fatigue,impairedperceptionandjudgment.12%Unconsciousnesswithoutwarning,poorjudgment,bluelips6-10%Nausea,vomiting,andunconsciousness;8minutes100%fatal;6minutes,50%fatal;4-5minutes,recoverywithtreatment.<6%Comain40seconds,spasmaticbreathing,convulsions,anddeathOxygenEnrichmentO2levelsabove23.5%areconsidered“OxygenEnriched.”OxygenEnrichedatmospherescreatefireandexplosionhazards.Causeflammablematerialssuchasclothingtoburnrapidlywhenignitedandmaycausenon-flammablematerialstoignite.HydrogenSulfideExposureConcentrationEffect1ppmSmellofrottenegg10ppm8hr.TWA15ppm15min.STEL100ppmLosesenseofsmell300ppmLossofconsciousness(approx.20min.)1000ppmImmediaterespiratoryarrest,lossofconsciousness,followedbydeathWeldinginConfinedSpacesContinuousventilationshouldbeprovidedintheconfinedspace.Pureoxygenshouldneverbeusedforventilation.Conductcontinuousmonitoringthroughouttheentrytoensurethatthearearemainssafeforentrants.Gascylindersandweldingpowersourcesshouldremainoutsidetheconfinedspace.RemembertofollowallConfinedSpaceEntryandWeldingSafetyGuidelinesPhysicalHazardsEngulfmentTemperatureExtremesElectricalHazardsNoiseSlipperySurfacesEntry"Entry"iswhenapersonpassesthroughanopeningintoapermit-requiredconfinedspaceAnypartoftheentrant'sbodybreakstheplaneofanopeningintothespaceAtmosphericMonitoringTestpermitspacebeforeentryPeriodicallymonitorpermitspacetodetermineifentryconditionsaremaintainedTestallareas(top,middle,&bottom)ObservestatusofexistinghazardsandthosecreatedduringentryoperationsPersonalProtective

Equipment(PPE)Full-bodyHarnessRespirator(half-mask,PAPR,Air-lineRespirator,etc.)TyvekSuitGloves(Nitrile,Welding,etc.)SafetyGlasses/GogglesEquipmentRequirementsTestingandmonitoringequipmentVentilatingequipmentCommunicationsequipmentLightingequipmentBarriersEquipmentneededforsafeentryandexitEmergencyequipmentOtherequipmentforsafeentryTheEntryPermitDurationmaynotexceedthetimeidentifiedonthepermitRetaineachcanceledentrypermitforatleast1yeartofacilitatereviewoftheprogramProblemsencounteredduringentryshallbenotedonthepermitsothatappropriaterevisionscanbemadetotheprogramContentsofTheEntryPermit11.Rescueandemergencyservices12.Communicationprocedures13.Equipment(personalprotectiveequipment,testingequipment,communicationsequipment,alarmsystems,rescueequipment,etc.)14.AnyotherinformationnecessaryinordertoensureemployeesafetyDutiesofAuthorized

EntrantsUnderstandallpotentialhazardsKnowwhatequipmenttouse&howtouseitproperlyCommunicatewithattendantregularlyIftheunexpectedoccurs–alerttheattendantDutiesofAuthorizedEntrantsEVACUATEtheconfinedspacewhen:OrdertoevacuateisgivenbytheattendantortheentrysupervisorEntrantrecognizesanywarningsignorsymptomofexposuretoadangeroussituationEvacuationalarmisactivatedDutiesofAttendants"Attendant"-stationedoutsidepermitspace;monitorsentrantsKnowthehazardsincludingsigns,symptomsandconsequencesofexposureContinuouslymaintainsaccuratecountofentrantsinpermitspaceRemainsoutsidethepermitspaceduringentryuntilrelievedbyanotherattendantDutiesofAttendantsCommunicatewithentrantstomonitorentrantstatusandtoalertentrantsiftheneedtoevacuatearisesMonitoractivitiesinside&outsidethespaceandkeepunauthorizedindividualsaway.SummonEmergencyServicesPerformnon-entryrescueswhenapplicableandtheyhavetrainingPerformnodutiesthatmightinterferewithprimarydutytomonitorandprotectentrantsDutiesofEntrySupervisor"Entrysupervisor"-personresponsiblefordeterminingifacceptableentryconditionsarepresent,forauthorizingentry,overseeingentryoperations,andforterminatingentryasrequiredAnentrysupervisoralsomayserveasanattendantorasanentrant,aslongasthatpersonistrainedandequippedtodosoKnowthehazardsincludingsigns,symptoms,andconsequencesofexposureDutiesofEntrySupervisorVerifythattheentrypermitiscomplete,alltestshavebeenconductedandallproceduresandequipmentareinplacebeforeallowingentrytobeginVerifythatrescueservicesareavailableandthatthemeansforsummoningthemareoperableRemoveunauthorizedindividualswhoenterorattempttoenterthespaceRescueandEmergency

ServicesSelf-RescueNon-entryRescueGreenvilleFire/Rescue–Call911ECUshallinformGFRofthehazardstheymayencounteronsiteProvidetherescueproviderwithaccesstoallpermitspacessotheycandeveloprescueplansandpracticerescueoperationsRescueEquipmentEachentrantshalluseafullbodyharness(andaretrievallineiffeasible)Amechanicalretrievaldevice(Tripod)shallbeavailableforverticaltypepermitspacesmorethan5feetdeepRetrievalsystemsshallbeusedunlesstheyincreasetheoverallriskofentryorwouldnotcontributetotherescueProgramReviewReviewentryoperationswhenthereisreasontobelievethatmeasurestakenmaynotprotectemployeesandrevisetheprogrambeforesubsequententriesReviewthepermitspaceprogramannuallyandrevisetheprogramasnecessarytoensurethatemployeesparticipatinginentryoperationsareprotectedIfyouhaveanyquestions,concerns,orrecommendationsletyoursupervisorand/orEH&Sknow.ECUShall…InformcontractorthatworkplacecontainspermitspacesandentryisallowedonlyincompliancewithpermitspaceprogramInformcontractorofthehazardsthatmakethespaceapermitspaceInformcontractorofprecautionsfortheprotectionofemployeesinornearpermitspaceswheretheywillbeworkingCoordinateentryoperationswiththecontractor,whenbothUniversitypersonnelandcontractorpersonnelwillbeworkinginornearpermitspaces.ContractorsShall…AllcontractorsperformingworkinConfinedSpacesonECUCampusmusthaveaConfinedSpaceProgram.Contractorsmusthavetheirownequipmentincludingmonitoringdeviceandrescueequipment.CoordinatewithemployerwhenbothhostpersonnelandcontractorpersonnelwillbeworkinginornearspacesDebriefemployerattheconclusionofentryContractorshallinformtheemployeroftheofanyhazardsconfrontedorcreated

QUESTIONS?

328-6166Quiz1.WhichofthefollowingisnotaConfinedSpace? A.Boiler B.Manhole C.Tank D.SmallMechanicalRoom2.Theleadingcauseofdeathinconfinedspacesaccidentsis A.Asphyxiation B.Burns C.Electrocution D.Falls3.ThehighertheO2levelinsidethespacethebetter. (True/False)4.Ifyouneedtoenteraspacebriefly“justtotakeaquicklook,”youdonotneedapermit.(True/False)5.Oneofthecharacteristicsofaconfinedspaceisthatitisnotdesignedforpeopleto