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【英文标准名称】:StandardTestMethodforMeasurementofHydrogenSulfideintheVaporPhaseAboveResidualFuelOils
【原文标准名称】:残留燃料油上方气相硫化氢测量的标准试验方法
【标准号】:ASTMD5705-2003
【标准状态】:现行
【国别】:
【发布日期】:2003
【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.E0.01
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:石油产品;油;试验;长度
【英文主题词】:hydrogensulfide;length-of-staindetectortube;residualfueloil
【摘要】:Excessivelevelsofhydrogensulfideinthevaporphaseaboveresidualfueloilsinstoragetanksmayresultinahealthhazard,OSHAlimitsviolation,andpubliccomplaintsaboutodors.ControlmeasurestomaintainsafelevelsofH2SinthetankatmosphereforthoseworkinginthevicinityrequireaconsistentmethodfortheassessmentofpotentiallyhazardouslevelsofH2Sinfueloils(Warningx2014;H2Sisahighlytoxicsubstance.UseextremecareinthesamplingandhandlingofsamplesthataresuspectedofcontaininghighlevelsofH2S.).Thistestmethodhasbeendevelopedtoproviderefineries,fuelterminals,andindependenttestinglaboratories,whichdonothaveaccesstoanalyticalinstrumentssuchasagaschromatograph,withasimpleandconsistentfieldtestmethodfortherapiddeterminationofH2Sinthevaporphaseofresidualfueloils.ThistestmethoddoesnotnecessarilysimulatethevaporphaseH2Sconcentrationofafuelstoragetank.Itdoes,however,providealevelofconsistencysothatthetestresultisonlyafunctionoftheresidualfueloilsampleandnotthetestmethod,operator,orlocation.NogeneralcorrelationcanbeestablishedbetweenthisfieldtestandactualvaporphaseconcentrationsofH2Sinresidualfueloilstorageortransports.However,afacilitythatproducesfueloilfromthesamecrudesourceunderessentiallyconstantconditionsmightbeabletodevelopacorrelationforitsindividualcase.1.1Thistestmethodcoversthefielddeterminationofhydrogensulfide(H2S)inthevaporphase(equilibriumheadspace)ofaresidualfueloilsample.1.2Thetestmethodisapplicabletoliquidswithaviscosityrangeof5.5mm2/sat40176;Cto50mm2/sat100176;C.ThetestmethodisapplicabletofuelsconformingtoSpecificationD396GradeNos.4,5(Heavy),and6.1.3Theapplicablerangeisfrom5to4000partspermillionbyvolume(ppmv/v)(micromole/mole).1.4ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:E31
【国际标准分类号】:75_160_20
【页数】:5P.;A4
【正文语种】:


【英文标准名称】:GroundthreadtapsforISOmetricthreadsoftolerances4Hto8Hand4Gto6Gcoarseandfinepitches;manufacturingtolerancesonthethreadedportion(ISO2857:1973incl.AMD1:1984andAMD2:1986);germanversionEN22857:1989
【原文标准名称】:ISO公制螺纹公差为4H到8H和4G至6G的粗牙与细牙的磨牙丝锥.螺纹部分的制造公差
【标准号】:DINEN22857-1990
【标准状态】:现行
【国别】:德国
【发布日期】:1990-07
【实施或试行日期】:
【发布单位】:德国标准化学会(DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:紧配合螺纹;中螺纹;标准螺纹;车螺纹;攻丝刀具;钻头;螺纹;尺寸公差;ISO米制螺纹;ISO螺纹;公差;切削工具;丝锥
【英文主题词】:
【摘要】:ThestandardspecifiesthemanufacturingtolerancesonthethreadedportionoftapsforproducingtheISOmetricthreadsoftolerancesclasses4Hto8Hand4Gto6G,accordingtoISO965-1to965-3.#,,#
【中国标准分类号】:J41
【国际标准分类号】:25_100_50
【页数】:19P;A4
【正文语种】:德语