作者:标准资料网 时间:2024-05-17 16:11:51   浏览:9708   来源:标准资料网

【英文标准名称】:StandardPracticeforCalculationofHazardPotentialFigures-of-MeritforThermallyUnstableMaterials
【原文标准名称】:热不稳定材料的危害能力灵敏值计算的标准实施规程
【标准号】:ASTME1231-2010
【标准状态】:现行
【国别】:美国
【发布日期】:2010
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:E27.02
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:
【英文主题词】:adiabaticdecompositiontemperaturerise;adiabatictemperaturerise;criticaldimension;criticaltemperature;differentialscanningcalorimetry;explosionpotential;hazardpotential;instabilityrating;instantaneouspowerdensity;shocksensitivi
【摘要】:Thispracticeprovidesninefigures-of-meritwhichmaybeusedtoestimatetherelativethermalhazardpotentialofthermallyunstablematerials.Sincenumerousassumptionsmustbemadeinordertoobtainthesefigures-of-merit,caremustbeexercisedtoavoidtoorigorousinterpretation(orevenmisapplication)oftheresults.Thispracticemaybeusedforcomparativepurposes,specificationacceptance,andresearch.Itshouldnotbeusedtopredictactualperformance.1.1Thispracticecoversthecalculationofhazardpotentialfigures-of-meritforexothermicreactions,including:(1)Time-to-thermal-runaway,(2)Time-to-maximum-rate,(3)Criticalhalfthickness,(4)Criticaltemperature,(5)Adiabaticdecompositiontemperaturerise,(6)Explosionpotential,(7)Shocksensitivity,(8)Instantaneouspowerdensity,and(9)NFPAinstabilityrating.1.2Thekineticparametersneededinthiscalculationmaybeobtainedfromdifferentialscanningcalorimetry(DSC)curvesbymethodsdescribedinotherdocuments.1.3Thistechniqueisthebestapplicabletosimple,singlereactionswhosebehaviorcanbedescribedbytheArrheniusequationandthegeneralratelaw.Forreactionswhichdonotmeettheseconditions,thistechniquemay,withcaution,serveasanapproximation.1.4Thecalculationsandresultsofthispracticemightbeusedtoestimatetherelativedegreeofhazardforexperimentalandresearchquantitiesofthermallyunstablematerialsforwhichlittleexperienceandfewdataareavailable.Comparablecalculationsandresultsperformedwithdatadevelopedforwellcharacterizedmaterialsinidenticalequipment,environment,andgeometryarekeytotheabilitytoestimaterelativehazard.1.5Thefigures-of-meritcalculatedasdescribedinthispracticeareintendedtobeusedonlyasaguidefortheestimationoftherelativethermalhazardpotentialofasystem(materials,container,andsurroundings).Theyarenotintendedtopredictactualthermokineticperformance.Thecalculatederrorsfortheseparametersareanintimatepartofthispracticeandmustbeprovidedtostressthis.Itisstronglyrecommendedthatthoseusingthedataprovidedbythispracticeseektheconsultationofqualifiedpersonnelforproperinterpretation.1.6ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.7ThereisnoISOstandardequivalenttothispractice.1.8Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:C65
【国际标准分类号】:13_230
【页数】:7P.;A4
【正文语种】:英语