BS 148-1998 变压器和开关设备未用过的和回收的矿物绝缘油规范

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【英文标准名称】:Specificationforunusedandreclaimedmineralinsulatingoilsfortransformersandswitchgear
【原文标准名称】:变压器和开关设备未用过的和回收的矿物绝缘油规范
【标准号】:BS148-1998
【标准状态】:作废
【国别】:英国
【发布日期】:1998-07-15
【实施或试行日期】:1998-07-15
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:电气设备;倾点;闪点;电绝缘材料;变压器;运动粘度;中和指数;成份允差;击穿电压;分类系统;污泥;化学分析和试验;液体电绝缘材料;损耗因数;呋喃;容量分析;多核芳香烃类;抗氧化;潮气;粘度;密度;酸度;绝缘油;材料的物理性质;开关设备;作标记;等级(质量);矿物油
【英文主题词】:Acidity;Breakdownvoltage;Chemicalanalysisandtesting;Classificationsystems;Compositionaltolerances;Density;Dissipationfactor;Electricalequipment;Electricalinsulatingmaterials;Flashpoint;Furan;Grades(quality);Insulatingoils;Kinematicviscosity;Liquidelectricalinsulatingmaterials;Marking;Mineraloils;Moisture;Neutralizationindex;Oxidationresistance;Physicalpropertiesofmaterials;Polychlorinatedbiphenyls;Polynucleararomatichydrocarbons;Pourpoint;Sludge;Switchgear;Transformers;Viscosity;Volumetricanalysis
【摘要】:ThisBritishStandardspecifiesrequirementsforunusedandreclaimedoxidationinhibitedanduninhibitedmineralinsulatingoils,asdelivered,foruseintransformers,switchgearandsimilarelectricalequipmentinwhichoilisrequiredasaninsulantorforheattransfer.Theseoilsareobtainedbythedistillationandrefiningofpetroleum.Oilswithandwithoutadditivesarewithinthescopeofthisstandard.Thisstandarddoesnotapplytomineralinsulatingoilsusedasimpregnatesincablesorcapacitorsnortohydrocarboninsulatingliquidsobtainedbysynthesis.NOTE.Oilsconformingtotherequirementsofthisstandard,ofthesameclassandcontainingnoadditives,areconsideredtobecompatiblewithoneanotherandcanbemixedinanyproportion.Thisdoesnotnecessarilyapplytooilscontainingadditivesandwheretheuserwishestomixsuchoilsacheckshouldbemadetoensurethatthemixturecomplieswiththerequirementsofthisstandard.
【中国标准分类号】:E38
【国际标准分类号】:29_040_10
【页数】:14P;A4
【正文语种】:英语


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【英文标准名称】:Waterquality-Determinationofbiochemicaloxygendemandafterndays(BOD)-Part2:Methodforundilutedsamples
【原文标准名称】:水质.n日生化需氧量(BODn)的测定.第2部分:未稀释样品的测定法
【标准号】:ISO5815-2-2003
【标准状态】:现行
【国别】:国际
【发布日期】:2003-04
【实施或试行日期】:
【发布单位】:国际标准化组织(IX-ISO)
【起草单位】:ISO/TC147
【标准类型】:()
【标准水平】:()
【中文主题词】:数学计算;化学分析和试验;BOD;试验;方法;额定值;水常规(实验);测定;稀释;生物化学;化学指数;生化需氧量;污水;废水检验;效应量度;物质量度;参数;氧;水质分析;需氧量;试验结果;水化学;定义;质量;水质试验;标准方法;水;水质
【英文主题词】:Biochemicaloxygendemand;Biochemistry;BOD;Chemicalanalysisandtesting;Chemicalindices;Chemistryofwater;Definitions;Determination;Dilution;Examinationofwastewater;Mathematicalcalculations;Measuresofeffects;Measuresofsubstances;Methods;Oxygen;Oxygendemand;Parameters;Quality;Ratings;Sewage;Standardmethods;Testresults;Testing;Water;Wateranalysis;Waterpractice;Waterquality;Watertesting
【摘要】:ThispartofISO5815specifiesdeterminationofthebiochemicaloxygendemand(BOD)ofwatersofundilutedsamples.Itisapplicabletoallwatershavingbiochemicaloxygendemandsgreaterthanorequalto0,5mg/lofoxygen(thelimitofdetermination)andnotexceeding6mg/lofoxygen.Theresultsobtainedaretheproductofacombinationofbiochemicalandchemicalreactions.Theydonothavetherigorousandunambiguouscharacterofthoseresultingfrom,forexample,asingle,well-defined,chemicalprocess.Nevertheless,theyprovideanindicationfromwhichthequalityofwaterscanbeestimated.Thetestcanbeinfluencedbythepresenceofvarioussubstances.Thosewhicharetoxictomicroorganisms,forexamplebactericides,toxicmetalsorfreechlorine,inhibitbiochemicaloxidation.Thepresenceofalgaeornitrifyingmicroorganismscanproduceartificiallyhighresults.Inthesesituationsamodificationofthemethodmaybenecessary.AnnexAdescribesalternativeincubationperiods.AnnexBdescribesproceduresformodificationofthemethodbyadditionofseedingmaterial,salts,inhibitionofnitrificationbyallylthiourea(ATU)addition,neutralization,homogenizationand/orfiltration.Thesemodificationsmaybefoundnecessaryforspecificevaluationsofthewaterqualityofreceivingwaters.AnnexCprovidesprecisiondata.
【中国标准分类号】:Z16
【国际标准分类号】:13_060_50
【页数】:13P.;A4
【正文语种】:英语