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【英文标准名称】:StandardPracticeforStorageandUseofLiquefiedPetroleumGases(LPG)inSampleCylindersforLPGTestMethods
【原文标准名称】:液化石油气试验方法用样品罐中液化石油气的储存和使用标准实施规范
【标准号】:ASTMD6849-2002(2007)
【标准状态】:现行
【国别】:美国
【发布日期】:2002
【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】:D02.08
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:
【英文主题词】:floatingpistoncylinder;liquefiedpetroleumgas(LPG);LPGsamplestoragecylinders;qualitycontrol(QC);standard80%fillcylinder;Compositionanalysis--petroleumproducts;Floatingpistoncylinder;Liquefiedpetroleumcylinder;LPG(liquefiedpetro
【摘要】:LPGsamplescanchangecompositionduringstorageandusefrompreferentialvaporizationoflighter(lowermolecularweight)hydrocarboncomponents,dissolvedinertgases(N2,Ar,He,andsoforth)andotherdissolvedgases/liquids(NH3,CO2,H2S,H2O,etc.).Carefulselectionofcylindertype,cylindervolume,anduseofinertgasforpressurizingcylindersisrequiredtoensurethatcompositionchangesaresmallenoughtomaintaintheintegrityofLPGwhenusedasaQCreferencematerialforvariousLPGtestmethods.MonitoringofongoingprecisionandbiasonQCmaterialsusingcontrolcharttechniquesinaccordancewithPracticeD6299canbeusedtoestablishtheneedforcalibrationormaintenance.1.1ThispracticecoversinformationforthestorageanduseofLPGsamplesinstandardcylindersofthetypeusedinsamplingmethod,PracticeD1265andfloatingpistoncylindersusedinsamplingmethod,PracticeD3700.1.2ThispracticeisespeciallyapplicablewhentheLPGsampleisusedasaqualitycontrol(QC)referencematerialforLPGtestmethods,suchasgaschromatography(GC)analysis(TestMethodD2163)orvaporpressure(TestMethodD6897)thatuseonlyafewmLpertest,sincerelativelysmallportableDepartmentofTransportation(DOT)cylinders(forexample,20lbcommonbarbecuecylinders)canbeused.Thispracticecanbeappliedtoothertestmethods.However,testmethodsthatrequirealargeamountofsamplepertest(forexample,manualvaporpressureTestMethodD1267)willrequireQCvolumesinexcessof1000LifstoredinstandardDOTcylindersorAmericanSocietyofMechanicalEngineers(ASME)vessels.
【中国标准分类号】:E46
【国际标准分类号】:75_200
【页数】:4P.;A4
【正文语种】:英语