ASTM G 109-1999 混凝土暴露于氯化物环境时确定化学混合物对埋置在混凝土中的钢筋腐蚀作用的试验方法

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【英文标准名称】:Rapeseed.Determinationofglucosinolatescontent.Part2:methodusingX-rayfluorescencespectrometry.
【原文标准名称】:油菜子.葡萄糖碱含量测定.第2部分:X射线荧光光谱测定法
【标准号】:NFV03-918-2-1997
【标准状态】:作废
【国别】:法国
【发布日期】:1997-02-01
【实施或试行日期】:1997-02-20
【发布单位】:法国标准化协会(FR-AFNOR)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:食品;X射线荧光光谱法;含量测定;农产品;葡萄糖异硫氰酸盐;菜籽油;化学分析和试验;油菜;农业;油料种子;植物种植
【英文主题词】:Agriculturalproducts;Agriculture;Chemicalanalysisandtesting;Determinationofcontent;Foodproducts;Glucosinolate;Oilseeds;Plantcultivation;Rape;Rapeseedoil;X-rayfluorescencespectrometry
【摘要】:
【中国标准分类号】:B33
【国际标准分类号】:67_200_20
【页数】:11P.;A4
【正文语种】:其他


【英文标准名称】:AnInvestigationofFlammableGasesorVaporswithRespecttoExplosion-ProofElectricalEquipment
【原文标准名称】:一项针对防爆电气设备的易燃气体或蒸气调查
【标准号】:ULTR58-1993
【标准状态】:现行
【国别】:美国
【发布日期】:1993-07-23
【实施或试行日期】:
【发布单位】:美国保险商实验所(US-UL)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:
【摘要】:ThisisareportoftheinitialinvestigationconductedbyUnderwriters'LaboratoriesInc.toestablishaprocedureforclassifyingadditionalflammablegasesorvaporswithinGroupsA,B,C,andDofClassIhazardouslocationsasdefinedbytheNationalElectricalCode.Thisprocedureprovidesameansofincreasingtheutilityofpresentlyrecognizedexplosion-proofelectricalequipmentwithoutthenecessityofadditionalexpensiveandlaborioustestingofsuchequipment.UsingatestfacilitydesignedandconstructedbyUnderwriter'sLaboratoriesInc.comparativeexperimentaldataonflamepropagationandexplosioneffects,withspecialreferencetoexplosion-proofelectricalequipment,havebeenobtainedforfifteenflammableandnonflammablegasesorvolatilechemicalmaterialsnetpreviouslyclassified.Featuresinvestigatedincludedthemaximumexplosionpressuredevelopedbytheparticulargas-orvapor-airmixtureunderpertinenttestconditions,andthewidthsandclearancesinmetal-to-metaljointsthatwillarrestflamepropagation.Theprimaryexplosionchamber,12inchininternaldiameterwithaninternalvolumeofonecubicfoot,isprovidedwithavariabletestjointassembly,meansforinducinginitialturbulenceinthetestmixturepriortoignition,andanoptional10-footsectionof1-1/2inchsizeconduitforstudiesofexplosionpressurepilingeffects.Toarriveattheproposedclassifications,theflamepropagationandexplosioneffectsofeachgasorvapor,togetherwithitsignitiontemperature,werecomparedwiththecorrespondingcharacteristicsofacetylene(GroupA),hydrogen(GroupB),diethylether(GroupC),andgasoline(GroupD)asdeterminedunderthesametestconditions.TheGroupclassificationofthesefourreferencematerialshaslongbeenestablishedwithinClassIhazardouslocations,andeachofthefourisconsideredrepresentativeoftheothergasesorvaporsclassedintherespectiveGroup.Onthebasisoftheresultsofthisinvestigation,fourteengasesorvaporshavebeenaddedtotheGroupclassificationswithinClassIhazardouslocationsasfollows:ClassI,GroupB-Butadiene,ethyleneoxide,andpropyleneoxide.ClassI,GroupC-Acetaldehyde,isoprene,andunsymmetricaldimethylhydrazine.ClassI,GroupD-Acrylonitrile,ammonia(anhydrous),ethylenedichloride,propylene,styrene,vinylacetate,vinylchloride,andpara-xylene.Carbondisulfide,thefifteenthmaterialinvestigatedwouldnotbeclassifiedinanyofthefourGroupsofClassIhazardouslocations.BecauseofitsIowignitiontemperatureandtheverycloseclearancesbetweensurfacesnecessarytoarrestitsflamepropagation,carbondisulfiderequiressafeguardsbeyondthoserequiredforanyofthepresentGroups.PartIIreportsonaninvestigationconductedbyUnderwritersLaboratoriesInc.toclassifyadditionalgasesorvaporswithinGroupsA,B,C,andDofClassIhazardouslocationsasdefinedbytheNationalElectricalCode,NFPANo.70-1975,ANSIC1-1975.
【中国标准分类号】:K35
【国际标准分类号】:
【页数】:104
【正文语种】:英语