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LaboratoryVentilation


J ScottWardLabconcoSenior TerritoryManagerLabconcoCorporationLaboratoryConstructionCompanywasfirstproductwasKjeldahlNitrogenDeterminationApparatusmayhaveshortenedweveexpandedhorizonsofferdifferentprod

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Document on Subject : "LaboratoryVentilation"‚ÄĒ Transcript:

1 LaboratoryVentilation J. ScottWardLabc
LaboratoryVentilation J. ScottWardLabconcoSenior TerritoryManager LabconcoCorporationLaboratoryConstructionCom

2 panywasfirstproductwasKjeldahlNitrogenDe
panywasfirstproductwasKjeldahlNitrogenDeterminationApparatus.mayhaveshortenedweíveexpandedhorizons.offerdifferen

3 tproductuniversities,researchcenters,hos
tproductuniversities,researchcenters,hospitals,generallaboratoriesgovernmentalagenciesaroundworld. Labconcoventi

4 lationproductsforyears. FirstFiberglassF
lationproductsforyears. FirstFiberglassFiberglassWalkAntiVortexContainment VariableVolume MinimizationOur Ventil

5 ation History ProspectKansasCity,FortSco
ation History ProspectKansasCity,FortScott,KansasLabconcoCorporation AlchemistsEdisonLaboratoriesFireplacechimne

6 yShelvesUniversityCupboardCommerciallyav
yShelvesUniversityCupboardCommerciallyavailableUniversity Edison The History of Fume Hoods Actual Photo of a Fum

7 e Cupboard in Edison Laboratories ventil
e Cupboard in Edison Laboratories ventilatedenclosurewhereharmfultoxicvaporssafelyprotectinglaboratorytechnician

8 . Definition of a Fume Hood captureconta
. Definition of a Fume Hood capturecontaincontaminants.Purpose of a Fume Hood Definition:intoachievedexhaustblow

9 erfromlaboratoryroomintothroughexhaustsy
erfromlaboratoryroomintothroughexhaustsystem.measuredfacevelocity.Room Face VelocityExhaust volumethroughgeneral

10 lyareaaveragevelocitydesired.Forexample,
lyareaaveragevelocitydesired.Forexample,feetminuterequiredsquarefeet,hoodísvolumefeetminuteAir Volume FoilAerody

11 namicdirectsintoacrossworksurfaceensurec
namicdirectsintoacrossworksurfaceensurecontainment. Design Components SASHcontrolsareaprotectsoperatorcontrolsfa

12 cevelocities.temperedlaminated. Design C
cevelocities.temperedlaminated. Design ComponentsSash VerticalHorizontalsashesCombination(verticalhorizontal Saf

13 ety Sash: Physical Barrier BAFFLEcontrol
ety Sash: Physical Barrier BAFFLEcontrolspatternintothroughBafflesarefixed(leftphoto),adjustable(rightphoto). Fi

14 xedBaffleAdjustableBaffleDesign Componen
xedBaffleAdjustableBaffleDesign Components materialdeterminedapplicationconcentrationexhaustsystem.Epoxycoatedst

15 eelFiberglassreinforced      polye
eelFiberglassreinforced      polyesterreinforcedcement(GRC)Stainlesssteel(TypePolypropylenePolyvinyl(PVC)c

16 omposite(polyresin) RestrictedPassReduce
omposite(polyresin) RestrictedPassReducedCombination Reduced Air Volume (1950-1960s) VariableVolumemaintainprese

17 lectedfacevelocityproportionalmonitoring
lectedfacevelocityproportionalmonitoringconditionsforsafety. Variable Air Volume Fume Hood Damper RestrictedPass

18 Variable Air Volume (1980s) controlsyst
Variable Air Volume (1980s) controlsysteminstalledVariable Air Volume Valvesdampers)locatedaroundroomforincreas

19 edexhaustlevelsVariable Air Volume Build
edexhaustlevelsVariable Air Volume Building Layout DiegoDepartmentEnergyReductionDramaticContainmentIncreasedsaf

20 ety LBNL Berkeley Hood (Late 1990s) Oper
ety LBNL Berkeley Hood (Late 1990s) Operationlowvelocitiescontainmentconstantvolumevariablevolumesystems High Pe

21 rformance (2000s) SEFAdefinitionPerforma
rformance (2000s) SEFAdefinitionPerformance:facevelocitymaximumMust/ASHRAEfromDetectorbreathingzoneAI/AU:Velocit

22 yEfficiency High Performance Defined Tra
yEfficiency High Performance Defined Traditionaltendencyforcontaminantsgeneratedinteriorrollforwardproducingconc

23 entrationsTraditional Hood Design Horizo
entrationsTraditional Hood Design Horizontalstream Vortex High Performance DesignsStableVortexAntiVortex FrontVi

24 ewSideViewTraditional By-pass Design Ant
ewSideViewTraditional By-pass Design Anti-Vortex High Performance and Computational PerchloricAcid/AcidDigesti

25 onRadioisotopeMountedEducationalmanufact
onRadioisotopeMountedEducationalmanufacturer General Work Practices Understand the hazards of the material you a

26 re Operate the fume hood at or above th
re Operate the fume hood at or above the recommended threshold limit value (TLV) Lower the sash as much as poss

27 ible Keep apparatus and work 6"behind th
ible Keep apparatus and work 6"behind theair foil General Work Practices Never use fume hood for chemical Keep

28 baffle area free of Do not lean into th
baffle area free of Do not lean into the fume hood closed unless the HVAC design calls for doors to be open Gen

29 eral Work Practices Do not remove any pa
eral Work Practices Do not remove any parts from the fume hood Minimize foot traffic past the fume Provide rout

30 ine maintenance on the complete system E
ine maintenance on the complete system Establish a scheduled testing Fume Hood Airflow video Fume Hood Accessor

31 ies Remote controlled service fixtures E
ies Remote controlled service fixtures Electrical switches and receptacles Lighting Vapor proof Ėfluorescent Ex

32 plosion proof Ėincandescent Exhaust blow
plosion proof Ėincandescent Exhaust blowers Coated Steel, Fiberglass, PVC Lab SafetyAccessories Base cabinet and

33 work surfaces Acid storage or Solvent s
work surfaces Acid storage or Solvent storage, General Storage Filters Activated carbon or HEPA Air flow monito

34 rs Audio-visual Planning Laboratory Spac
rs Audio-visual Planning Laboratory SpaceIdentifyairflowconfigurationsAdequatediffuserlocationEnergyconservation

35 variesgeographicallytonconditioningCostt
variesgeographicallytonconditioningCosttemperroom AlternateLocation Register Register Caseworkregisterfacing Eac

36 haffectsroomísventilationtrafficflow,eve
haffectsroomísventilationtrafficflow,everythingmustconsideredPlanning Laboratory Space Determineapplication/chem

37 icalusageDetermineusersequipmentIdentify
icalusageDetermineusersequipmentIdentifyrequiredReviewlocalcodesand/orcorporateAmericansFume Hood Selection Lowe

38 rExplosivelowergasvaporordinaryambientte
rExplosivelowergasvaporordinaryambienttemperatures. Fume Hood Selection What is an EP Fume Hood?Proofcontainexpl

39 osionvoidpotentialreducepotential¬†¬†¬†¬
osionvoidpotentialreducepotential       ReducedatmosphereroomelectricalcomponentsSwitches,receptaclesinte

40 rnalmanufacturerInstalledsiteMeetstatelo
rnalmanufacturerInstalledsiteMeetstatelocalcodes roommayhavepotentiallyexplosive/flammableatmosphereNFPADiv1Labo

41 ratoryNFPAExemptsinteriorfromelectricalc
ratoryNFPAExemptsinteriorfromelectricalclassificationException:HazardHazardoperationCalculateďdilutionfactorĒvol

42 umetricrateWhen Do You Need an EP Hood?
umetricrateWhen Do You Need an EP Hood? Averagefacevelocitycalculatedintofootsquares.Velocityreadingsaretakenare