【英文标准名称】:StandardPracticeforObtainingLPGSamplesUsingaFloatingPistonCylinder
【原文标准名称】:用浮动活塞柱获取液化石油气(LPG)样品的标准实施规程
【标准号】:ASTMD3700-2007
【标准状态】:现行
【国别】:
【发布日期】:2007
【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.H0
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:烃类;液体;润滑剂;石油产品;工艺;试样
【英文主题词】:floatingpistoncylinder;hydrocarbonfluidsampling;LP-gas;sampling
【摘要】:ThispracticeallowsthecollectionofarepresentativesampleofLPGthatmaycontaintracevolatilecomponentssuchasmethane,nitrogen,andethane.SamplingbyPracticeD1265mayresultinasmall,butpredictablelossoftheselightercomponents.PracticeD1265issuitableforcollectingsamplesforroutinespecificationtesting,asthesmalllossoflightcomponentsisnotsignificantunderSpecificationD1835specificationrequirements.PracticeD3700isrecommendedwheneverhighlyaccuratedeterminationoflightcomponentsisrequired.Forexample,compositiondeterminedonsamplescollectedaccordingtoPracticeD3700maybeusedtoestablishproductvalueofNGLmixtures(seeAppendixX1).1.1Thispracticecoverstheequipmentandproceduresforobtainingarepresentativesampleofspecificationliquefiedpetroleumgas(LPG),suchasspecifiedinSpecificationD1835,GPA2140,andcomparableinternationalstandards.Itmayalsobeusedforothernaturalgasliquid(NGL)productsthatarenormallysinglephase(NGLmix,fieldbutane,andsoforth),definedinotherindustryspecificationsorcontractualagreements.1.2Thispracticeisnotintendedfornon-specificationproductsthatcontainsignificantquantitiesofundissolvedgases(N2,CO2),freewaterorotherseparatedphases,suchasraworunprocessedgas/liquidsmixturesandrelatedmaterials.Thesameequipmentcanbeusedforthesepurposes,butadditionalprecautionsaregenerallyneededtoobtainrepresentativesamplesofmulti-phaseproducts(seeAppendixX1).1.3Thispracticeincludesrecommendationsforthelocationofasamplepointinalineorvessel.Itistheresponsibilityoftheusertoensurethatthesamplingpointislocatedsoastoobtainarepresentativesample.1.4ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpractices,anddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:E46
【国际标准分类号】:75_120
【页数】:10P.;A4
【正文语种】: