1LABORATORYVENTILATIONPART1GENERAL1.1REFERENCECODESANDSTANDARDSA.ApplicableBuilding,Mechanical,Plumbing,andFireCodesofSCaspertheOfficeoftheStateEngineerB.ANSI/AIHAZ9.5-2012,LaboratoryVentilationStandardC.ANSI/ASHRAE110,MethodofTestingPerformanceofLaboratoryFumeHoodsD.NFPA45,StandardonFireProtectionforLaboratoriesUsingChemicalsE.GuidelinesforLaboratoryDesign:Health,Safety,andEnvironmentalConsiderationsLouisJ.DiBerardinis,JanetS.Baum,MelvinW.First,GariT.Gatwood,AnandK.Seth.4thEditionF.ACGIH,IndustrialVentilation:AManualofRecommendedPracticeforDesign,LatestEdition);IndustrialVentilation:AManualofRecommendedPracticeforOperationandMaintenance–Publication,LatestEdition)G.OSHATechnicalManual,VentilationInvestigation,SectionIII,Chapter3,http://www.osha.gov/dts/osta/otm/otm_toc.htmlH.ASHRAELaboratoryDesignGuide,2015I.AmericanChemicalSociety’sCommitteeonChemicalSafety:IdentifyingandEvaluatingHazardsinResearchLaboratories,2015J.FuelGasCodeK.InstituteofLaboratoryAnimalResources,“GuidefortheCareandUseofLaboratoryAnimals.”L.InternationalFireCode21.2SCOPEA.ThisStandarddefinesClemson’sexpectationsforthedesignoflaboratoryspaces,includingspacelayoutandthedesignofventilationsystems.SuchdesignsshallstrivetobalancethesustainabilitygoalsoftheUniversitywhilemaintainingthesafetyandhealthoflaboratoryoccupantsandthegeneralpublic.ItissuggestedthatDesignersreviewadditionallaboratoryventilationinformationlocatedattheResearchSafetywebsitewww.clemson/research/safety.eduforfurtherguidance.B.ThisStandardappliestoconstructionofnewfacilitiesandrenovationstoexistingfacilitiesinwhichchemicalworkistobedoneatlaboratory-scale.Facilitiesinwhichchemicalworkisconductedbeyondlab-scale,orforwhichotherhazards,suchashighchemicalhazard,radiologicalorbiologicalhazardsarethedesigndriversmayrequirespecialtydesigncriteria.DesignersshallconsultwithFacilitiesServicesandResearchSafetybeforeproceedingtodetermineabasisfordesigninordertoaddressthespecialconsiderationsforthesetypesofspaces.1.3DEFINITIONSA.ForthepurposesofthisStandard,“Laboratory”referstoaspaceorfacilitywhererelativelysmallquantitiesofhazardouschemicals(i.e.amountsthatcanbesafelyhandledbyoneperson)areusedonanon-productionbasis.B.“Generalexhaustventilation”,alsocalleddilutionventilation,differsfromlocalexhaustventilationinthatinlieuofcapturingemissionsattheirsourceandremovingthemfromtheair,generalexhaustventilationallowsthecontaminanttobeemittedintotheworkplaceairwhereitisdilutedatanacceptablelevel(e.g.,tothePermissibleExposureLevelorbelow)..C.“Localexhaustventilation”systemsarecomposedoffiveparts:fans,hoods,ducts,aircleaners,andstacks.Localexhaustventilationisdesignedtocaptureanemittedcontaminantatornearitssource,beforethecontaminanthasachancetodisperseintotheworkplaceair.D.“ComputationalFluidDynamics”istheuseofnumericalmethodstocalculateandvisualizeairflowpatternsorparticulatemigration.E.A“Vacant”laboratoryisonethatisunassignedtoanoccupantandthereforecanhavethegeneralventilationandfumehoods3turnedofforturneddowntolevelsneededonlyforgeneraltemperaturecontrol.F.“Occupied”modeisthatwhichthebuildingcontrolssystemsensorsrecognizethatapersonisphysicallywithintheroom.G.“Unoccupied”modeisthatwhichthebuildingcontrolssystemsensorsrecognizethatthereisnoonepresentintheroom.H.Fumehood“Hibernation”describeswhenthelabisassignedtoanoccupant,buttheoperation...
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