DIN EN ISO 11690-1-1997 声学.机器工作场所低噪音设计推荐惯例.第1部分:噪音控制策略

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【英文标准名称】:Acoustics-Recommendedpracticeforthedesignoflow-noiseworkplacescontainingmachinery-Part1:Noisecontrolstrategies(ISO11690-1:1996);GermanversionENISO11690-1:1996
【原文标准名称】:声学.机器工作场所低噪音设计推荐惯例.第1部分:噪音控制策略
【标准号】:DINENISO11690-1-1997
【标准状态】:现行
【国别】:德国
【发布日期】:1997-02
【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】:声音;噪声降低;职业安全;声学测量;噪声控制;定义;工作地点;人体保护;设计;检验;噪声(环境的);规范(验收);人类工效学;导则;噪声抑制;噪声测量
【英文主题词】:
【摘要】:Basedonthedescriptionoffundamentalconceptsofnoisecontrol(noisecontrol,soundemission,soundimmissionandsoundexposition)thedocumentdescribesstrategiesforthetreatmentofnoiseproblemsinexcistingandplannedworkplaces.Itisapplicabletoallkindsofworkplacesandallkindsofsoundthatcanoccurinworkingrooms,"includinghumanactivities.Itcontainsimportanthintstobeobservedwhenbuyinganewmachineorplant.Itdealsexclusivelywithaudiblesound.Thefirstparagraph""Generalnoisedescriptors""definesthetermssoundpressurelevel","time-averagedsoundpressurelevelandworkstation.""Noiseemissiondescriptors""specifiesthetermsnoiseemission",soundpowerlevel,emissionsoundpressurelevel,surfacesoundpressurelevel,measurednoiseemissionvalue,noiseemissiondeclaration,uncertainty,"declaredsingle-numbernoiseemissionvalueanddeclareddual-numbernoiseemissionvalue.Thefollowingtermsaredefinedinthethirdparagraph""Noiseimmissionandnoiseexposure"":noiseimmissionataworkstation",noiseexposureofaperson,"noiseimmissionandnoiseexposuredescriptors.Thelastparagraph""Noisereduction""describesthetermssoundreductionindex",soundabsorptioncoefficient,equivalentabsorptionarea,insertionloss,reductionofsoundpressurelevelataworkstation,directsound,reflectedsound,diffuse-fieldconditions,non-diffuse-fieldconditions,reverberationtime,spatialsounddistributioncurve,rateofspatialdecayofsoundpressurelevelsperdistancedoublingandexcessofsoundpressurelevel.
【中国标准分类号】:Z32
【国际标准分类号】:13_140;17_140_20
【页数】:23P;A4
【正文语种】:德语


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【英文标准名称】:Electricalapparatusforthedetectionandmeasurementofflammablegases-Part5:PerformancerequirementsforgroupIIapparatusindicatingavolumefractionupto100%gas
【原文标准名称】:可燃性气体的检测和测量用电气设备第5部分:II类设备(指示气体的体积百分率最大为100%)的性能要求
【标准号】:IEC61779-5-1998
【标准状态】:作废
【国别】:国际
【发布日期】:1998-04
【实施或试行日期】:
【发布单位】:国际电工委员会(IEC)
【起草单位】:IEC/SC31L
【标准类型】:()
【标准水平】:()
【中文主题词】:可燃性环境;电驱动装置;测量;气体;电气器具;电气工程;气体燃料;煤气;规范(验收)
【英文主题词】:Electricappliances;Electricalengineering;Electrically-operateddevices;Flammableatmospheres;Fuelgases;Gases;Measurement;Specification(approval)
【摘要】:1ThispartofIEC61779specifiesrequirementsforgroupII(asdefinedinpart1)portable,transportableandfixedapparatusforthedetectionandmeasurementofcombustiblegasorvapourconcentrationswithair.Theapparatus,orpartsthereof,maybeinstalledorusedinpotentiallyexplosiveatmospheres,otherthanminessusceptibletofiredamp(i.e.groupI).Therequirementsandtestmethodsapplicabletotheapparatuscoveredbythisstandardarespecifiedinpart1.2Thisstandardisrestrictedtoapparatusintendedforthedetectionandmeasurementofvolumeratiosofcombustiblegasorvapourinairinvolumefractionsfrom0%to100%.NOTE1-Apparatuscoveredbythisstandardwillnormallybeintendedtooperateinvolumeratiosgreaterthan100%LEL.NOTE2-Althoughapparatusofthetypescoveredbythisstandardmaybesuitablefordetectingawiderangeofcombustiblegases,particulargases(e.g.methaneorpropane)arespecifiedinpart1asthecomponentsofthetestgasesforthepurposeofpracticalconvenience.Theperformancerequirementsspecifiedinthisstandardshouldthereforebeconsideredwithcautionwhentheapparatusisusedtodetectothercombustiblegases,assomeparameters-suchastimeofresponse-willbemodified.
【中国标准分类号】:N56
【国际标准分类号】:13_320
【页数】:7P;A4
【正文语种】:英语


【英文标准名称】:StandardSpecificationforConcreteFacingBrick
【原文标准名称】:混凝土贴面砖的标准规范
【标准号】:ASTMC1634-2009
【标准状态】:现行
【国别】:美国
【发布日期】:2009
【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】:C15.03
【标准类型】:(Specification)
【标准水平】:()
【中文主题词】:
【英文主题词】:absorption;brick;compressivestrength;concretebrick;concretebuildingbrick;concretefacingbrick;concretemasonryunits;linearshrinkage;portlandcement;Brick--specifications;Concreteconstructionmaterials/applications--specifications;Masonr
【摘要】:1.1Thisspecificationcoverssolid,dry-cast,concretefacingbrickintendedforinteriorandexterioruseinconstructingstructuralandfacingmasonrycomponentsandaremadefromportlandcement,water,andsuitablemineralaggregateswithorwithouttheinclusionofothermaterials.Note18212;SpecificationC55addressesconcretebuildingbrickusedinnon-facing,utilitarianapplications(previouslyreferredtoinearliereditionsofSpecificationC55C55asGradeSx2014;forgeneralusewheremoderatestrengthandresistancetofrostactionandmoisturepenetrationarerequired).ThisspecificationdiffersfromSpecificationC55inthatitincludesexpandedconsiderationforpropertiesofconcretebrickusedinfacingapplicationsandotherexposures(previouslyreferredtoinearliereditionsofSpecificationC55asGradeNx2014;foruseasarchitecturalveneerandfacingunitsinexteriorwallsandforusewherehighstrengthandresistancetomoisturepenetrationandseverefrostactionaredesired).1.2Thetextofthisspecificationreferencesnotesandfootnoteswhichprovideexplanatorymaterial.Thesenotesandfootnotes(excludingthoseintablesandfigures)shallnotbeconsideredasrequirementsofthestandard.1.3Thevaluesstatedininch-poundunitsaretoberegardedasstandard.ThevaluesgiveninparenthesesaremathematicalconversionstoSIunitsthatareprovidedforinformationonlyandarenotconsideredstandard.Note28212;Concretefacingbrickcoveredbythisspecificationaremadefromlightweightornormalweightaggregates,orboth.Note38212;Whenparticularfeaturesaredesired,suchasdensityclassification,highcompressivestrength,surfacetexturesforappearanceorbond,finish,color,fireresistance,insulation,acousticalproperties,orotherspecialfeatures,suchpropertiesshouldbespecifiedseparatelybythepurchaser.Suppliersshouldbeconsultedastotheavailabilityofconcretefacingbrickhavingthedesiredfeatures.
【中国标准分类号】:Q14
【国际标准分类号】:91_100_30
【页数】:3P.;A4
【正文语种】:英语