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ASTM D2425-2004 质谱法测定中间馏分中烃类的标准试验方法

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【英文标准名称】:StandardTestMethodforHydrocarbonTypesinMiddleDistillatesbyMassSpectrometry
【原文标准名称】:质谱法测定中间馏分中烃类的标准试验方法
【标准号】:ASTMD2425-2004
【标准状态】:现行
【国别】:
【发布日期】:2004
【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】:D02.04.0M
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:光谱测定法;石油产品;试验;润滑剂;烃类
【英文主题词】:hydrocarbontypes;massspectrometry;middledistillates
【摘要】:Aknowledgeofthehydrocarboncompositionofprocessstreamsandpetroleumproductsboilingwithintherangeof400to650x00B0;F(204to343x00B0;C)isusefulinfollowingtheeffectofchangesinprocessvariables,diagnosingthesourceofplantupsets,andinevaluatingtheeffectofchangesincompositiononproductperformanceproperties.1.1Thistestmethodcoversananalyticalschemeusingthemassspectrometertodeterminethehydrocarbontypespresentinvirginmiddledistillates204to343C(400to650F)boilingrange,5to95volume%asdeterminedbyTestMethodD86.SampleswithaveragecarbonnumbervalueofparaffinsbetweenC12andC16andcontainingparaffinsfromC10andC18canbeanalyzed.Elevenhydrocarbontypesaredetermined.Theseinclude:paraffins,noncondensedcycloparaffins,condenseddicycloparaffins,condensedtricycloparaffins,alkylbenzenes,indansortetralins,orboth,CnH2n-10(indenes,etc.),naphthalenes,CnH2n-14(acenaphthenes,etc.),CnH2n-16(acenaphthylenes,etc.),andtricyclicaromatics.Note1ThistestmethodwasdevelopedonconsolidatedElectro-dynamicsCorp.Type103MassSpectrometers.1.2ThevaluesstatedinSIunitsaretoberegardedasthestandard.Theinch-poundunitsgiveninparenthesesareforinformationonly.Thisstandarddoesnotpurporttoaddressallofthesafetyproblems,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Foraspecifichazardstatement,see.
【中国标准分类号】:G17
【国际标准分类号】:75_080
【页数】:6P.;A4
【正文语种】:


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【英文标准名称】:StandardTestMethodforCopperStripCorrosionbyIndustrialAromaticHydrocarbons
【原文标准名称】:用工业芳烃测试铜带腐蚀性的标准试验方法
【标准号】:ASTMD849-2002
【标准状态】:作废
【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(ASTM)
【起草单位】:ASTM
【标准类型】:()
【标准水平】:()
【中文主题词】:半成品;腐蚀试验;铜;芳烃;试验
【英文主题词】:semi-finishedproducts;corrosiontests;aromatichydrocarbons;copper;testing
【摘要】:
【中国标准分类号】:G15
【国际标准分类号】:77_150_30;77_060
【页数】:3P;A4
【正文语种】:英语


【英文标准名称】:Cathodicprotectionforfixedsteeloffshorestructures
【原文标准名称】:海上固定钢结构的阴极保护
【标准号】:BSEN12495-2000
【标准状态】:现行
【国别】:英国
【发布日期】:2000-05-15
【实施或试行日期】:2000-05-15
【发布单位】:英国标准学会(BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:海水;电流的;表面防护;近海建设工程;水下建筑工程;交付使用;电解镀层;覆层;阳极;监督(认可);阴极保护;钢;钢结构;近海工程;文献工作;安装;防腐蚀;定义;安全;材料
【英文主题词】:
【摘要】:ThisEuropeanStandarddefinesthemeanstobeusedtocathodicallyprotectthesubmergedareasoffixedsteeloffshorestructuresandappurtenances.1StructuralpartsThisEuropeanStandarddefinestherequirementsforthecathodicprotectionoffixedstructures,includingsubseaproductionandrelatedprotectivestructureswhetherconnectedornottoeachotherbypipelinesand/orwalkways.Italsocoversthesubmergedareasofappurtenancesattachedtothestructure,whentheseareelectricallyconnectedtothestructure.Itdoesnotcoverthecathodicprotectionoffloatingstructuressuchasships,semi-submersibleunits,orelongatedstructuressuchaspipelinesorcables.ThisEuropeanStandardconcernsonlythecathodicprotectionofexternalsurfaces,incontactwiththeseawaterorwiththeseabed.Itcoverstheimmersedorburiedexternalsurfacesofthejacket,conductorpipes,wellcasings,piles,J-tubes,productionorutilityrisers,etc.Itdoesnotcoverthecorrosionprotectionofthesectionsofthestructureabovethesealevel,i.e.thesplashzoneandatmosphericzone.Thisstandarddoesnotincludetheinternalprotectionofanycomponentssuchasjacketmembers,legs,conductorpipes;theprotectionoftheseisoftenperformedusingchemicals.2MaterialsThisEuropeanStandardcoversthecathodicprotectionofbareorcoatedsteelswithaspecifiedminimumyieldstrength(S.M.Y.S.)notexceeding500N/mm.2.1OverpolarizationandhighstrengthsteelsIfthepotentialofthestructurebecomestoonegativethestructurewillbecomeoverpolarizedandthiscaninduceapenetrationofhydrogenintothesteelwall,resultinginembrittlementofthemetal,andsubsequentlyapossibledetrimentaleffect,includingpropagationofcracks.Asageneralindicationthehigherthetensileproperties,thegreateristheriskofhydrogeninduceddamage.However,materialhardnessandmicrostructurearealsoimportant.Thesephenomenacanoccuronconventionalsteelsusedforoffshorefixedstructures(gradeS355asperEN10025)atpotentialsmorenegativethan-1,10Vvs.Ag/AgCl/seawater.Relevanttestsshouldbeperformedfortheuseofcathodicprotectionoutsidetheselimits.2.2GalvaniccouplingSomepartsofthestructurecanbemadeofmetallicmaterialsotherthancarbonmanganesesteel.Thecathodicprotectionsystemshouldbedesignedtoensurethatthereiscompletecontroloveranygalvaniccorrosionarisingfromthiscoupling.3EnvironmentThisEuropeanStandardisapplicableforthewholesubmergedzoneinanykindofseawaterorseabed.Forsurfaceswhicharealternatelyimmersedandexposedtotheatmosphere,thecathodicprotectionisonlyeffectivewhentheimmersiontimeissufficientlylongforthesteeltobecomepolarized.Thisisthecaseonaboutthelowestthirdpartofthetidalzone.Adifferentmethodofcorrosionprotectionshallbethereforeusedfortheprotectionofthewettedsurfacelocatedabovethislevel,i.e.byusingaprotectivecoating,cladding,sheathingorincreasingthethicknessofthestructuralmaterial.
【中国标准分类号】:A29
【国际标准分类号】:47_020_05;77_060
【页数】:36P;A4
【正文语种】:英语