阻燃标准fmvss302

R–DISTRIBUTED:Oct.1998FEDERALSAFETYSTANDARDSMVSS302MOTORVEHICLESAFETYSTANDARDNO.302FLAMMABILITYOFINTERIORMATERIALS–PASSENGERCARS,MULTIPURPOSEPASSENGERVEHICLES,TRUCKSANDBUSES302–1–1GMREFERENCEMANUAL–LEGALSTANDARDSA–NewMaterialAddedR–RevisedEFFECTIVE—SEPTEMBER1,197236FR2296512/2/71(Issued12/2)40FR14318-193/31/75(Issued3/17)40FR42746-79/16/75(Issued9/10)40FR56667-812/4/75(Issued11/28)63FR28922-575/27/98(Issued5/13/98)A63FR50995-10049/24/98(Issued9/21/98)S1.Scope.Thisstandardspecifiesburnresistancerequirementsformaterialsusedintheoccupantcompartmentsofmotorvehicles.S2.Purpose.Thepurposeofthisstandardistoreducethedeathsandinjuriestomotorvehicleoccupantscausedbyvehiclefires,especiallythoseoriginatingintheinteriorofthevehiclefromsourcessuchasmatchesorcigarettes.S3.Application.Thisstandardappliestopassengercars,multipurposepassengervehicles,trucks,andbuses.S3A.Definitions.“Occupantcompartmentairspace”meansthespacewithintheoccupantcompartmentthatnormallycontainsrefreshableair.S4.Requirements.S4.1TheportionsdescribedinS4.2ofthefollowingcomponentsofvehicleoccupantcompartmentsshallmeettherequirementsofS4.3:Seatcushions,seatbacks,seatbelts,headlining,convertibletops,armrests,alltrimpanelsincludingdoor,front,rear,andsidepanels,compartmentshelves,headrestraints,floorcoverings,sunvisors,curtains,shades,wheelhousingcovers;enginecompartmentcovers,mattresscovers,andanyotherinteriormaterials,includingpaddingandcrash-deployedelements,thataredesignedtoabsorbenergyoncontactbyoccupantsintheeventofacrash.S4.1.1Reserved.S4.2Anyportionofasingleorcompositematerialwhichiswithin1/2inchoftheoccupantcompartmentairspaceshallmeettherequirementsofS4.3.Effective:5/27/99R–S4.2Anyportionofasingleorcompositematerialwhichiswithin13mmoftheoccupantcompartmentairspaceshallmeettherequirementsofS4.3.S4.2.1Anymaterialthatdoesnotadheretoothermaterial(s)ateverypointofcontactshallmeettherequirementsofS4.3whentestedseparately.S4.2.2Anymaterialthatadherestoothermaterial(s)ateverypointofcontactshallmeettherequirementsofS4.3whentestedasacompositewiththeothermaterial(s).Effective:5/27/99R–S4.2.2AnymaterialthatadherestoothermaterialsateverypointofcontactshallmeettherequirementsofS4.3whentestedasacompositewiththeothermaterial(s).C–DISTRIBUTED:Sept.1998FEDERALSAFETYSTANDARDSMVSS302MOTORVEHICLESAFETYSTANDARDNO.302FLAMMABILITYOFINTERIORMATERIALS–PASSENGERCARS,MULTIPURPOSEPASSENGERVEHICLES,TRUCKSANDBUSES302–1–2GMREFERENCEMANUAL–LEGALSTANDARDSA–NewMaterialAddedR–RevisedIllustrativeExampleEffective:5/27/99IllustrativeExampleR–C–MaterialAhasanon-adheringinterfacewithmaterialBandistestedseparately.PartofmaterialBiswithin1/2inchoftheoccupantcompartmentairspace,andmaterialsBandCadhereateverypointofcontact;thereforeBandCaretestedasacomposite.ThecutisinmaterialCasshown,tomakeaspecimen1/2inchthick.S4.3(a)WhentestedinaccordancewithS5,materialdescribedinS4.1andS4.2shallnotburn,nortransmitaflamefrontacrossitssurface,atarateofmorethan4inchesperminute.However,therequirementconcerningtransmissionofaflamefrontshallnotapplytoasurfacecreatedbythecuttingofatestspecimenforpurposesoftestingpursuanttoS5.(b)Ifamaterialstopsburningbeforeithasburnedfor60secondsfromthestartoftiming,andhasnotburnedmorethan2inchesfromthepointwheretimingwasstarted,itshallbeconsideredtomeettheburn-raterequirementofS4.3(a).R–DISTRIBUTED:July1998FEDERALSAFETYSTANDARDSMVSS302MOTORVEHICLESAFETYSTANDARDNO.302FLAMMABILITYOFINTERIORMATERIALS–PASSENGERCARS,MULTIPURPOSEPASSENGERVEHICLES,TRUCKSANDBUSES302–1–3GMREFERENCEMANUAL–LEGALSTANDARDSA–NewMaterialAddedR–RevisedEffective:5/27/99R–MaterialAhasanon-adheringinterfacewithmaterialBandistestedseparately.PartofmaterialBiswithin13mmoftheoccupantcompartmentairspace,andmaterialsBandCadhereateverypointofcontact;therefore,BandCaretestedasacomposite.ThecutisinmaterialCasshown,tomakeaspecimen13mmthick.S4.3(a)WhentestedinaccordancewithS5,materialdescribedinS4.1andS4.2shallnotburn,nortransmitaflamefrontacrossitssurface,atarateofmorethan102mmperminute.TherequirementconcerningtransmissionofaflamefrontshallnotapplytoasurfacecreatedbythecuttingofatestspecimenforpurposesoftestingpursuanttoS5.(b)Ifamaterialstopsburningbeforeithasburnedfor60secondsfromthestartoftiming,andhasnotburnedmorethan51mmfromthepointwheretimingwasstarted,itshallbeconsideredtomeettheburn-raterequirementofS4.3(a).S5.Testprocedure.S5.1Conditions.S5.1.1Thetestisconductedinametalcabinetforprotectingthetestspecimensfromdrafts.Theinteriorofthecabinetis15incheslong,8inchesdeep,and14incheshigh.Ithasaglassobservation.windowinthefront,aclosableopeningtopermitinsertionofthespecimenholder,andaholetoaccommodatetubingforagasburner.forventilation,ithasa1/2-inchclearancespacearoundthetopofthecabinet,ten3/4-inch-diameterholesinthebaseofthecabinet,andlegstoelevatethebottomofthecabinetbythree-eighthsofaninch,alllocatedasshowninfigure1.S5.1.2Priortotesting,eachspecimenisconditionedfor24hoursatatemperatureof70_Fandarelativehumidityof50percent,andthetestisconductedunderthoseambientconditions.Effective:5/27/99R–S5.1.1Thetestisco