Mack MRU - Inhalation Hazards

12SafetyInformation
Inhalation
LNG/CNGisnottoxic,butcancauseasphyxiationinconcentrationorinenclosed
areasbecauseitreducestheoxygenavailableforbreathing.Forthisreason,methane
detectorsarelocatedintheenginecompartmentandinsidethecab.Thesedetectors
willtriggeranalarminsidethecabifmethaneconcentrationgoesaboveasafelevel.
Thesedetectorsarealwaysactivewhetherthevehicleisonoroff,aslongasthebattery
isconnectedandthefuseisinplaceandnotblown.Ifovercomebyvapor,removethe
individualfromexposureandcallaphysicianimmediately.Ifbreathingisirregularor
hasstopped,startresuscitation(iftrainedinCPR)andadministeroxygenifavailable.
DANGER
KEEPTHEEQUIPMENTAREA
WELLVENTILATED.Although
LNG/CNGisnon-toxic,itcancause
asphyxiationinaconnedareawithout
ventilation.Anyatmospherethatdoes
notcontainenoughoxygenforbreathing
cancausedizziness,unconsciousness,
orevendeath.LNG,beingcolorless,
odorlessandtasteless,cannotbe
detectedbyhumansenses.Eventhough
CNGissulfurized,thesmellmay
gounnoticedonsomevehicles,such
asarefusetruck.Withoutadequate
ventilation,naturalgaswilldisplace
theoxygenandgivenowarningthat
anon-lifesupportingatmosphereis
present.StoreLNG/CNGinawell
ventilatedarea.
IfvehiclesequippedwithanLNGenginemustbeparkedorworkedonindoorsfor
shortperiodsoftime,pipingfromtheprimaryLNGtankventpipetotheoutsideof
thebuildingshouldbeprovided.See"PrimaryLNGTankV entPiping"attheendof
theSAFETYsection.De-fuelingorremovaloftheLNGtank(s)isrecommendedfor
vehiclesstoredindoorsforlongperiodsoftime.
Separatemethanedetector/alarmsystemsshouldbeinstalledinfacilitiesthat
frequentlyhouseLNG/CNGvehicles,consultlocalcodesandordinancestoensure
compliance.Inaddition,handheldmethanedetector/alarmdevicesshouldbeused
whenworkingonLNG/CNGvehicleswithnon-functioningordisconnectedmethane
detector/alarmsystemandwherenoauxiliarymethanedetector/alarmsystemis
installed.
Note:DuetothecryogenicstateofLNGfuel,itcannotbeodorized,therefore,itwill
notsmelllikeCNGorpipelinegasinahome.