ASTM_E_2965_-_15.pdf

Designation:E296515An American National StandardStandard Test Method forDetermination of Low Levels Heat Release Rate forMaterials and Products Using an Oxygen ConsumptionCalorimeter1This standard is issued under the fixed designation E2965;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This fire-test-response standard provides a procedure formeasuring the response of materials that emit low levels of heatrelease when exposed to controlled levels of radiant heatingwith or without an external igniter.1.2 This test method differs from Test Method E1354 in thatit prescribes a different specific test specimen size,specimenholder,test specimen orientation,a direct connection betweenthe plenum and the top plate of the cone heater assembly toensure complete collection of all the combustion gases(Fig.1),and a lower volumetric flow rate for analyses via oxygenconsumption calorimetry.It is intended for use on materialsand products that contain only small amounts of combustibleingredients or components such as test specimens that yield apeak heat release of 200 kWm2and total heat release of15 MJm2.NOTE1PMMA is typically used to check the general operation of aCone Calorimeter.PMMA should not be used with this standard as theheat release rate is too high.1.3 The rate of heat release is determined by measurementof the oxygen consumption as determined by the oxygenconcentration and the flow rate in the exhaust product stream.The effective heat of combustion is determined from a con-comitant measurement of test specimen mass loss rate,incombination with the heat release rate.Smoke development(anoptional measurement)is measured by obscuration of light bythe combustion product stream.1.4 Test specimens shall be exposed to initial test heat fluxesgenerated by a conical radiant heater.External ignition,whenused,shall be by electric spark.The test specimen testingorientation is horizontal,independent of whether the end-useapplication involves a horizontal or a vertical orientation.1.5 Ignitability is determined as a measurement of timefrom initial exposure to time of sustained flaming.1.6 This test method has been developed for use for materialand product evaluations,mathematical modeling,designpurposes,and development and research.Examples of materialtest specimens include portions of an end-use product or thevarious components used in the end-use product.1.7 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.1.8 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.1.9 Fire testing is inherently hazardous.Adequate safe-guards for personnel and property shall be employed inconducting these tests.1.10 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.For specific hazardstatements,see Section 7.2.Referenced Documents2.1 ASTM Standards:D5865 Test Method for Gross Calorific Value of Coal andCokeE176 Terminology of Fire StandardsE603 Guide for Room Fire ExperimentsE906 Test Method for Heat and Visible Smoke ReleaseRates for Materials and Products Using a ThermopileMethodE1354 Test Method for Heat and Visible Smoke ReleaseRates for Materials and Products Using an Oxygen Con-sumption Calorimeter2.2 ISO StandardsISO5657-1986(E)FireTestsReactiontoFireIgnitability of Building MaterialsISO 5725-2(1994)Accuracy(Trueness and Precision)ofMeasurement Methods and ResultsPart 2:Basic1This test method is under the jurisdiction of ASTM Committee E05 on FireStandards and is the direct responsibility of Subcommittee E05.23 on Combustibil-ity.Current edition approved Aug.1,2015.Published September 2015.DOI:10.1520/E2965-15.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 Method for the Determination of Repeatability and Re-producibility of a Standard Measurement Method3.Terminology3.1 DefinitionsFor definitions of terms used in this testmethod,refer to Terminology E176.3.2 Definitions of Terms Specific to This Standard:3.2.1 effective heat of combustion,nthe amount of heatgenerated per unit mass lost by a material,product or assembly,when exposed to specific fire test conditions(contrast grossheat of combustion).3.2.1.1 DiscussionThe effective heat of combustion de-pends on the test method and is determ