ASTM_E_2574_-_E_2574M_-_12a.pdf

Designation:E2574/E2574M12aAn American National StandardStandard Test Method forFire Testing of School Bus Seat Assemblies1This standard is issued under the fixed designation E2574/E2574M;the number immediately following the designation indicates the yearof original adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.A superscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This is a fire-test-response standard.1.2 This test method assesses the burning behavior ofupholstered seating used in school buses by measuring specificfire-test responses when a school bus seat specimen is sub-jected to a specified flaming ignition source under normallyventilated conditions.1.3 The ignition source is a gas burner.1.4 This fire test is primarily useful to distinguish productsthat,when exposed to an ignition source,will become fullyinvolved in fire from other products that will not.1.5 Data are obtained describing the burning behavior of theseat assemblies from a specific ignition source until all burninghas ceased.1.6 This test method does not provide information on thefire performance of upholstered seating in fire conditions otherthan those conditions specified.1.7 The burning behavior is visually documented by photo-graphic or video recordings,whenever possible.1.8 The values stated in either SI units or inch-pound unitsare to be regarded separately as standard.The values stated ineach system may not be exact equivalents;therefore,eachsystem shall be used independently of the other.Combiningvalues from the two systems may result in non-conformancewith the standard.1.9 This standard is used to measure and describe theresponse of materials,products,or assemblies to heat andflame under controlled conditions,but does not by itselfincorporate all factors required for fire hazard or fire riskassessment of the materials,products or assemblies underactual fire conditions.1.10 Fire testing is inherently hazardous.Adequate safe-guards for personnel and property shall be employed inconducting these tests.1.11 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2D5132 Test Method for Horizontal Burning Rate of Poly-meric Materials Used in Occupant Compartments ofMotor VehiclesE176 Terminology of Fire StandardsE1537 Test Method for Fire Testing of Upholstered Furni-tureE1590 Test Method for Fire Testing of MattressesE2061 Guide for Fire Hazard Assessment of Rail Transpor-tation VehiclesE2067 Practice for Full-Scale Oxygen Consumption Calo-rimetry Fire TestsE2257 Test Method for Room Fire Test of Wall and CeilingMaterials and AssembliesF1550 Test Method for Determination of Fire-Test-ResponseCharacteristics of Components or Composites of Mat-tresses or Furniture for Use in Correctional Facilities afterExposure to Vandalism,by Employing a Bench ScaleOxygen Consumption CalorimeterIEEE/ASTM SI 10 American National Standard for MetricPractice2.2 National Safety Council Standard:3School bus seat upholstery fire block test,approved by theNational Conference on School Transportation as part ofthe National Standards for School Buses and NationalStandards for School Bus Operations2.3 Federal Motor Vehicle Safety Standards:4FMVSS 222 School Bus Passenger Seating and CrashProtection,U.S.Code of Federal Regulations,Title 49,1This test method is under the jurisdiction of ASTM Committee E05 on FireStandards and is the direct responsibility of Subcommittee E05.17 on Transporta-tion.Current edition approved July 1,2012.Published August 2012.Originallyapproved in 2011.Last previous edition approved in 2012 as E2574/E2574M12.DOI:10.1520/E2574_E2574M-12A.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3Available from National Safety Council(NSC),1121 Spring Lake Dr.,Itasca,IL 60143-3201,http:/www.nsc.org.4Available from Superintendent of Documents,U.S.Government PrintingOffice,Washington,DC 20402.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 Transportation,Subtitle B,Chapter V,Part 571,Subpart B.FMVSS 302 Flammability of Interior Material,U.S.Code ofFederal Regulations,Title 49,Transportation,Subtitle B,Chapter V,Part 571,Subpart B2.4 NFPA Standard:5NFPA 286 Standard Method of Tests for Evaluating Contri-bution of Wall and Ceiling Interior Finish to Room FireGrowth3.Terminology3.1 For definitions of terms used in this test method asso-ciated with fire issues,refer to the terminology contained inTerminology E176.3.2 Definitions:3