DIN EN 10025-4-2005 结构钢制热轧产品.第4部分:热机械轧制可焊细粒结构钢交货技术条件

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【英文标准名称】:Hotrolledproductsofstructuralsteels-Part4:Technicaldeliveryconditionsforthermomechanicalrolledweldablefinegrainstructuralsteels;GermanversionEN10025-4:2004
【原文标准名称】:结构钢制热轧产品.第4部分:热机械轧制可焊细粒结构钢交货技术条件
【标准号】:DINEN10025-4-2005
【标准状态】:现行
【国别】:德国
【发布日期】:2005-04
【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】:顺序示度;细晶粒结构钢;热力学的;生产工艺;化学成分;细粒钢;可焊接的;等级;验收检验;轧制钢材;材料的机械性能;可焊性;钢;名称与符号;检验;验收规范;结构钢;试验;特性;热轧的;定义;机械性能;钢产品;交货条件;规范(验
【英文主题词】:
【摘要】:Part4ofthisEuropeanStandard-inadditiontopart1-specifiesrequirementsforflatandlongproductsofhotrolledweldablefinegrainstructuralsteelsinthethermomechanicalrolledcondition
【中国标准分类号】:H44
【国际标准分类号】:77_140_10;77_140_50
【页数】:25P;A4
【正文语种】:德语


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【英文标准名称】:StandardPracticeforControllingandCharacterizingErrorsinWeighingCollectedAerosols
【原文标准名称】:控制和表征称量聚集的悬浮颗粒的误差的标准规程
【标准号】:ASTMD6552-2006
【标准状态】:现行
【国别】:
【发布日期】:2006
【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】:D22.04
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:气溶胶;收藏;控制;误差;称重
【英文主题词】:blank;controlfilter;filter;foam;gravimetric;limitofdetection;limitofquantitation;LOD;LOQ;samplingmedia;weighing;weight
【摘要】:Theweighingofcollectedaerosolisoneofthemostcommonandpurportedlysimpleanalyticalproceduresinbothoccupationalandenvironmentalatmosphericmonitoring(forexample,TestMethodD4532orD4096).Problemswithmeasurementaccuracyoccurwhentheamountofmaterialcollectedissmall,owingbothtobalanceinaccuracyandvariationintheweightofthatpartofthesamplingmediumthatisweighedalongwiththesample.Theprocedurespresentedhereforcontrollinganddocumentingsuchanalyticalerrorswillhelpprovidetheaccuracyrequiredformakingwell-foundeddecisionsinidentifying,characterizing,andcontrollinghazardousconditions.Recommendationsaregivenastomaterialstobeused.Meansofcontrollingorcorrectingerrorsarisingfrominstabilityareprovided.Recommendationsastotheweighingprocedurearegiven.Finally,amethodevaluationprocedureforestimatingweighingerrorsisdescribed.RecommendationsarealsoprovidedforthereportingofweightsrelativetoLOD(see3.2.6)andLOQ(see3.2.7).Thequantities,LODandLOQ,arecomputedasaresultofthemethodevaluation.1.1Assessmentofairborneaerosolhazardsintheoccupationalsettingentailssamplingontoacollectionmediumfollowedbyanalysisofthecollectedmaterial.Theresultisgenerallyanestimatedconcentrationofapossiblyhazardousmaterialintheair.Theuncertaintyinsuchestimatesdependsonseveralfactors,oneofwhichrelatestothespecifictypeofanalysisemployed.Themostcommonlyappliedmethodforanalysisofaerosolsistheweighingofthesampledmaterial.Gravimetricanalysis,thoughapparentlysimple,issubjecttoerrorsfrominstabilityinthemassofthesamplingmediumandotherelementsthatmustbeweighed.Anexampleisprovidedbyaerosolsamplersdesignedtocollectparticlessoastoagreewiththeinhalableaerosolsamplingconvention(seeISOTR7708,GuideD6062M,andEN481).Forsomesamplertypes,filterandcassetteareweighedtogethertomakeestimates.Therefore,ifthecassette,forexample,absorbsorloseswaterbetweentheweighingsrequiredforaconcentrationestimation,thenerrorsmayarise.Thispracticecoverssuchpotentialerrorsandprovidessolutionsfortheirminimization.1.2ThevaluesgiveninSIunitsaretoberegardedasstandard.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Z15
【国际标准分类号】:13_040_99
【页数】:9P.;A4
【正文语种】:


基本信息
标准名称:飞机货物系留调节钩
中标分类: 航空、航天 >> 航空运输与地面设备 >> 货运
发布日期:1990-09-18
实施日期:1991-02-01
首发日期:1900-01-01
作废日期:1900-01-01
出版日期:1900-01-01
页数:16页
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所属分类: 航空 航天 航空运输与地面设备 货运