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【英文标准名称】:Testsforgeometricalpropertiesofaggregates.Part3:determinationofparticleshape.Flakinessindex.
【原文标准名称】:集料几何特性试验.第3部分:颗粒形状测定.片状指数
【标准号】:NFP18-622-3-1997
【标准状态】:作废
【国别】:法国
【发布日期】:1997-03-01
【实施或试行日期】:1997-03-20
【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】:游标规;几何的;试验设备;粒度测量;形状;毛石;砾石;屏蔽;游标卡尺;粒度;粒度结构;建筑;混凝土结构;额定值;集料;粒度分布;岩石;特性;特性;粒状材料;石;测量;测量仪器;颗粒形状;量规;定义;尺寸;施工材料;试验;分析;几何;名称与符号;测定;矿质集料;天然石料;材料试验;筑路石集料;粒度分选
【英文主题词】:Aggregates;Analysis;Characteristics;Concretestructures;Construction;Constructionmaterials;Definition;Definitions;Designations;Determination;Dimensions;Gauges;Geometric;Geometry;Grainshapes;Grainsize;Grainsizing;Grainstructures;Gravel;Materialstesting;Measurement;Measuringinstruments;Mineralaggregates;Naturalstones;Particlesizedistribution;Particlesizemeasurement;Particulatematerials;Properties;Ratings;Roadstoneaggregates;Rocks;Rubble;Screening;Shape;Slidegauge;Stone;Testequipment;Testing;Verniercalipers
【摘要】:
【中国标准分类号】:Q13
【国际标准分类号】:91_100_15
【页数】:11P.;A4
【正文语种】:其他


【英文标准名称】:Safetyoflaserproducts-Equipmentclassificationandrequirements
【原文标准名称】:激光产品的安全.设备分类和要求
【标准号】:BSEN60825-1-2007
【标准状态】:现行
【国别】:英国
【发布日期】:2007-11-30
【实施或试行日期】:2007-11-30
【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】:应用规则;分类;分类系统;设计;装置分类;电气工程;设备安全;信息标记;激光设备;激光辐射;激光器;光危害;极限(数学);作标记;道路标记;测量;最低要求;职业安全;生产;辐射;辐射危害;辐射防护;安全;安全工程;安全要求;规范(验收);测试;用户信息
【英文主题词】:Applicationrule;Classification;Classificationsystems;Design;Deviceclassification;Electricalengineering;Equipmentsafety;Informationsigns;Laserequipment;Laserradiation;Lasers;Lighthazards;Limits(mathematics);Marking;Markingofroads;Measurement;Minimumrequirements;Occupationalsafety;Production;Radiation;Radiationhazards;Radiationprotection;Safety;Safetyengineering;Safetyrequirements;Specification(approval);Testing;Userinformation
【摘要】:IEC60825-1isapplicabletosafetyoflaserproductsemittinglaserradiationinthewavelengthrange180nmto1mm.Alaserproductmayconsistofasinglelaserwithorwithoutaseparatepowersupplyormayincorporateoneormorelasersinacomplexoptical,electrical,ormechanicalsystem.Typically,laserproductsareusedfordemonstrationofphysicalandopticalphenomena,materialsprocessing,datareadingandstorage,transmissionanddisplayofinformation,etc.Suchsystemshavefounduseinindustry,business,entertainment,research,education,medicineandconsumerproducts.LaserproductsthataresoldtoothermanufacturersforuseascomponentsofanysystemforsubsequentsalearenotsubjecttoIEC60825-1,sincethefinalproductwillitselfbesubjecttothisstandard.However,ifthelasersystemwithinthelaserproductisoperablewhenremovedfromtheequipment,therequirementsofthisPart1applytotheremovableunit.AnylaserproductisexemptfromallfurtherrequirementsofthisPart1ifclassificationbythemanufacturerofthatproductaccordingtoClauses3,8and9showsthattheemissionleveldoesnotexceedtheAEL(accessibleemissionlimit)ofClass1underallconditionsofoperation,maintenance,serviceandfailure.Inadditiontothehazardsresultingfromlaserradiation,laserequipmentmayalsogiverisetootherhazardssuchasfireandelectricshock.ThisPart1describestheminimumrequirements.CompliancewiththisPart1maynotbesufficienttoachievetherequiredlevelofproductsafety.Laserproductsmustconformtotheapplicableperformanceandtestingrequirementsoftheapplicableproductsafetystandards.WherealasersystemformsapartofequipmentwhichissubjecttoanotherIECproductsafetystandard(e.g.formedicalequipment(IEC60601-2-22),ITequipment(IEC60950),audioandvideoequipment(IEC60065),equipmentforuseinhazardousatmospheres(IEC60079),orelectrictoys(IEC62115)),thisPart1willapplyinaccordancewiththeprovisionsofIECGuide104F1)forhazardsresultingfromlaserradiation.Ifnoproductsafetystandardisapplicable,thenIEC61010-1applies.Inpreviouseditions,LEDswereincludedinthescopeofIEC60825-1,andtheymaybestillincludedinotherpartsoftheIEC60825series.However,withthedevelopmentoflampsafetystandards,opticalradiationsafetyofLEDsingeneralcanbemoreappropriatelyaddressedbylampsafetystandards.TheremovalofLEDsfromthescopeofthisPart1doesnotprecludeotherstandardsfromincludingLEDswhenevertheyrefertolasers.CIES009maybeappliedtodeterminetheriskgroupclassofanLEDorproductincorporatingoneormoreLEDs.TheMPE(maximumpermissibleexposure)valuesofthisPart1weredevelopedforlaserradiationanddonotapplytocollateralradiation.However,ifaconcernexiststhataccessiblecollateralradiationmightbehazardous,thelaserMPEvaluesmaybeappliedtoconservativelyevaluatethispotentialhazard.TheMPEvaluesarenotapplicabletointentionalhumanexposuretolaserradiationforthepurposeofmedicalorcosmetic/aesthetictreatment.
【中国标准分类号】:L51
【国际标准分类号】:13_280;31_260
【页数】:104P.;A4
【正文语种】:英语