受限空間安全_第1頁
受限空間安全_第2頁
受限空間安全_第3頁
受限空間安全_第4頁
受限空間安全_第5頁
已閱讀5頁,還剩25頁未讀 繼續免費閱讀

下載本文檔

版權說明:本文檔由用戶提供并上傳,收益歸屬內容提供方,若內容存在侵權,請進行舉報或認領

文檔簡介

受限空間安全第1頁,共30頁,2023年,2月20日,星期五ConfinedSpaceStatisticsLeadingcauseofoccupationalfatalitiesinthiscountryTheStandardcovers240,000workplaces

and12.2millionworkersWorkersmake4.8millionentries/yearStandardmayprevent85%offatalities

andnearly11,000injuries第2頁,共30頁,2023年,2月20日,星期五DefinitionofaConfinedSpace

(mustmeetallthreecriteria)Limitedmeansforentryorexit(manholes,vaults,&pits)Largeenough&soconfiguredthatanemployeecanbodilyenterand performassignedworkNotdesigned

forcontinuous

occupancyTwotypes–Permit&Non-PermitRequiredSpaces第3頁,共30頁,2023年,2月20日,星期五DefinitionofPermit-Required

ConfinedSpacesAconfinedspacethathasoneormoreofthefollowingcharacteristics:ContainsorhaspotentialtocontainahazardousatmospherePotentialforengulfmentInternalconfigurationthatcantraporasphyxiateentrantAnyotherserioussafetyorhealthhazards(electrical,hotwork,drowning...)第4頁,共30頁,2023年,2月20日,星期五WhatisaHazardousAtmosphere?Anatmospherethatmayexposeemployeestotheriskofdeath,incapacitation,impairmentofabilitytoself-rescue,oracuteillnessresultingfromthefollowing:Flammablegas,vaporormistinexcessof10%oftheLFLCombustibledustataconcentrationthatis>or=LFLOxygenconcentration<19.5%or>23.5%Anysubstancewithconcentration>PELAnyotheratmosphericconcentrationthatisIDLH第5頁,共30頁,2023年,2月20日,星期五Permit-RequiredSpacesonCampusElectricalvaults:electricalhazards,lowoxygen,&/orasbestosSewermanholes:CO,lowoxygen, &/ortoxicgasesStormdrainmanholes:CO,lowoxygen,&/ortoxicgases第6頁,共30頁,2023年,2月20日,星期五Permit-RequiredSpacesonCampus(cont)PoolPit:lackofoxygen,toxicgases,&/ordrowningSewerTanks:toxicgases,lowoxygen, drowning,&/orelectrocutionhazardsCommunicationVaults:low oxygen,asbestos, &/orelectricalhazards第7頁,共30頁,2023年,2月20日,星期五Non-PermitRequiredSpacesSpacesthatdonotcontainor,withrespecttoatmospherichazards,havethepotentialtocontainanyhazardcapableofcausingdeathorseriousphysicalharm: Utilityclosets Below-gradetrenches Storagevaults Utilitysubbasements第8頁,共30頁,2023年,2月20日,星期五ConfinedSpacesonCampusEH&SandPPMjointlydeterminewhichtypesofspacesorspecificspacesaredefinedasconfinedspacesAllconfinedspacesoncampuswillbeconsidered“PermitRequired”untilpre-entryproceduresdetermineotherwise.OnlytheEntrySupervisorisauthorizedtodowngradeentryrequirements.第9頁,共30頁,2023年,2月20日,星期五ConfinedSpaceEntryProceduresSpaceEvaluationAlternateEntryProceduresPermit-RequiredEntryProcedures第10頁,共30頁,2023年,2月20日,星期五SpaceEvaluationRefertoFlowChartEntrySupervisormustevaluate&authorizeanentryThiswilldetermineif“AlternateEntry”or“Permit-Required”Ifthespaceisreclassifiedasan“AlternateEntry”thenthefollowingconditionsmustexist:onlyhazardisthepotentialforahazardousatmosphere;andpotentialhazardcanbeeliminatedthroughcontinuedforcedairventilation;andprevious¤tgastestsmustshowabovetwoconditionsaretrue第11頁,共30頁,2023年,2月20日,星期五第12頁,共30頁,2023年,2月20日,星期五AlternateEntryProcedures

Procedurethatmaybeusedtoenteraconfinedspaceiftheonlyhazardpresentinthespaceisatmosphericinnatureand:Theatmospherichazardcanbecontrolledbymechanicalventilationaloneand;Thepermitspacewillnotbecomeimmediatelydangeroustolifeandhealth(IDLH)ifthemechanicalventilationshouldfail.第13頁,共30頁,2023年,2月20日,星期五AlternateEntryProcedures(cont)EntrySupervisorensuresspacehasbeenproperlyclassifiedUseguarding/cover/barriertoprevent falls(whenremovingcover)Lockout/tagoutallhazardous energysourcesCompletelogTestforO2,flammablegases/vaporsandpotentialtoxicaircontaminantsSetupventilation(supplyairtakenfromcleansource)TheEntrantwillevacuatetheconfinedspaceifhe/shebecomesawareofanunrecognizedhazard第14頁,共30頁,2023年,2月20日,星期五第15頁,共30頁,2023年,2月20日,星期五第16頁,共30頁,2023年,2月20日,星期五PermitRequiredEntryProceduresEntrySupervisor,EntryAttendantandEntrantmustparticipateInspectandsetupsafetyequipmentEntrySupervisorestablishesspecificrescueproceduresLockandtagoutallhazardoussourcesofenergyUseguardingIfremovinganentrancecoverSampleandrecordairforhazardouscontaminantsEntrySupervisorcompletesPermitpriortoentry第17頁,共30頁,2023年,2月20日,星期五PermitRequiredEntryProcedures(cont)AttendantverifiesacceptableentryconditionsEntrantwearsretrievalequipmentduringentireoperationAttendantcontinuouslymonitorsatmosphere&recordsreadingswiththeportablegasdetectorImmediatelyevacuatespaceifsafetyequipmentfailsorspacebecomesorhaspotentialtobecomeimmediatelyhazardousUponcompletion,EntrySupervisorcompletespermitandfiles第18頁,共30頁,2023年,2月20日,星期五PotentialConfined

SpaceHazardsEngulfmentOxygendeficiency(19.5%orless)Oxygenenrichment(23.5%orhigher)FlammablegasesorvaporsCombustibledustsToxicsubstancesIDLHatmospheresPhysicalhazards第19頁,共30頁,2023年,2月20日,星期五MonitoringConfinedSpace

AirQualityPriortoenteringanyconfinedspace,preparethegasdetectorConducta“bumptest”.Breatheintothegasdetectorprobeandlookforadecreaseinoxygenconcentration-shouldalarmSampleairqualitybyslightlyremovinglidorthroughholeinlidbeforecompletelyopeningthespaceMonitorwithprobeslowlyatdifferentverticalheightsMeasureinthefollowingorder:Oxygen,LEL,H2S,CORecordresultsontheConfinedSpaceEntryPermitRecordSheet第20頁,共30頁,2023年,2月20日,星期五MonitoringConfinedSpace

AirQuality(cont.)ThegasdetectormustbeonduringtheENTIREentryoperationWillberegularlyinspectedbytheAttendant.RecordgasreadingsataminimumofonehourintervalsCeaseentryoperationsandremoveentrypersonnelifthefollowingconcentrationsareexceededatanytime:Oxygenreadinglessthan19.5%orgreaterthan22.5%Combustiblegasreadinggreaterthan9%LELH2Sreadinggreaterthan9ppmCOreadinggreaterthan34ppm第21頁,共30頁,2023年,2月20日,星期五VentilatingaConfinedSpaceSetuponeormoreblowersto provideadequateventilationfor thespace.Ventilationmustbe forceddraftdischargeofcleanair intospace(notexhaustofspace)EnsureventilationairsupplyisfromcleansourceAllowenoughtimeforblowerstoclearthespacebeforeentering.Ensurethattheblowersremainonduringtheentireentryprocedure.Iftheblowerfails,theEntrantmustleavethespaceimmediatelyNote:thisappliestoboth“PermitRequired”and“AlternateEntry”procedures第22頁,共30頁,2023年,2月20日,星期五TypesofPersonal

ProtectiveEquipmentProtectiveclothingWeldingapron/sleevesRespiratorsGlovesSafetyglasses第23頁,共30頁,2023年,2月20日,星期五RetrievalEquipmentRescueharness(chestorfullbody)RescuetripodRopeorcable(inspectfordamage)第24頁,共30頁,2023年,2月20日,星期五DepartmentResponsibilitiesEH&SEstablish&updatewrittenprogramprovidetrainingreviewrecords&provideconsultationPPM&CommunicationServicesEnsureallinvolvedemployeesreceivetraining&followproceduresprovideandmaintainequipmentmaintainrecords第25頁,共30頁,2023年,2月20日,星期五EntrySupervisorResponsibilitiesEnsureallpersonsinvolvedinaconfinedspaceentryareproperlytrainedEvaluateandclassifytheconfinedspacepriortoentryCompletetheConfinedSpaceEntryPermit(ifrequired)Ensurecanceledpermitsareproperlyfiled第26頁,共30頁,2023年,2月20日,星期五EntrantResponsibilitiesCompletedConfinedSpacetrainingMuststayinconstantcontactwiththeAttendant(I.e.sight,voice,orradio)duringaPermitRequiredConfinedSpaceentryUsetheappropriatesafetyequipmentasspecifiedontheEntryPermit第27頁,共30頁,2023年,2月20日,星期五EntryAttendantResponsibilitiesCompletedConfinedSpaceTrainingObtain&installrequiredsafetyequipmentforPermitRequiredConfinedSpaceentriesMonitorpedestrianbarrierstoprotectentrant(s)fromexternalhazardsMonitortheatmosphereduringtheentireentryoperationMustremaininpositionuntilrelievedbyanothertrainedAttendantEnsurealllockout/tagoutmeasures(ifimplemented)remaininplaceResponsiblefororderinganevacuationifasituationdevelopsthatcouldendangertheEntrant第28頁,

溫馨提示

  • 1. 本站所有資源如無特殊說明,都需要本地電腦安裝OFFICE2007和PDF閱讀器。圖紙軟件為CAD,CAXA,PROE,UG,SolidWorks等.壓縮文件請下載最新的WinRAR軟件解壓。
  • 2. 本站的文檔不包含任何第三方提供的附件圖紙等,如果需要附件,請聯系上傳者。文件的所有權益歸上傳用戶所有。
  • 3. 本站RAR壓縮包中若帶圖紙,網頁內容里面會有圖紙預覽,若沒有圖紙預覽就沒有圖紙。
  • 4. 未經權益所有人同意不得將文件中的內容挪作商業或盈利用途。
  • 5. 人人文庫網僅提供信息存儲空間,僅對用戶上傳內容的表現方式做保護處理,對用戶上傳分享的文檔內容本身不做任何修改或編輯,并不能對任何下載內容負責。
  • 6. 下載文件中如有侵權或不適當內容,請與我們聯系,我們立即糾正。
  • 7. 本站不保證下載資源的準確性、安全性和完整性, 同時也不承擔用戶因使用這些下載資源對自己和他人造成任何形式的傷害或損失。

評論

0/150

提交評論