BS EN 12814-6-2000 热塑半成品焊接接头试验.低温拉伸试验

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【英文标准名称】:StandardGuideforFieldPreservationofGround-WaterSamples
【原文标准名称】:地下水样品现场保护的标准指南
【标准号】:ASTMD6517-2000(2005)
【标准状态】:现行
【国别】:
【发布日期】:2000
【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】:D18.21
【标准类型】:(Guide)
【标准水平】:()
【中文主题词】:
【英文主题词】:chemicalpreservation;ground-watersampling;holdingtime;physicalpreservation;preservative;samplepreservation;temperatureblank
【摘要】:Ground-watersamplesaresubjecttochemical,physical,andbiologicalchangerelativetoin-situconditionsatthegroundsurfacesasaresultofexposuretoambientconditionsduringsamplecollection(forexample,pressure,temperature,ultravioletradiation,atmosphericoxygen,andcontaminants)(1)(2).5Physicalandchemicalpreservationofsamplesminimizefurtherchangesinsamplechemistrythatcanoccurfromthemomenttheground-watersampleisretrieved,tothetimeitisremovedfromthesamplecontainerforextractionoranalysis,orboth.Measuresalsomustbetakentopreservethephysicalintegrityofthesamplecontainer.Theneedforsamplepreservationforspecificanalytesshouldbedefinedpriortothesamplingeventanddocumentedinthesite-specificsamplingandanalysisplaninaccordancewithGuideD5903.Thedecisiontopreserveasampleshouldbemadeonaparameter-specificbasisasdefinedbyindividualanalyticalmethods.1.1Thisguidecoversmethodsforfieldpreservationofground-watersamples.Laboratorypreservationmethodsarenotdescribedinthisguide.1.2Thisstandardmayinvolvehazardousmaterials,operations,andequipment.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.1.3Thisguideoffersanorganizedcollectionofinformationoraseriesofoptionsanddoesnotrecommendaspecificcourseofaction.Thisdocumentcannotreplaceeducationorexperienceandshouldbeusedinconjunctionwithprofessionaljudgment.Notallaspectsofthisguidemaybeapplicableinallcircumstances.ThisASTMstandardisnotintendedtorepresentorreplacethestandardofcarebywhichtheadequacyofagivenprofessionalservicemustbejudged,norshouldthisdocumentbeappliedwithoutconsiderationofaproject''smanyuniqueaspects.Theword"Standard"inthetitleofthisdocumentmeansonlythatthedocumenthasbeenapprovedthroughtheASTMconsensusprocess.
【中国标准分类号】:D04
【国际标准分类号】:
【页数】:5P.;A4
【正文语种】:


【英文标准名称】:Electricalapparatusforexplosivegasatmospheres-Part25:Intrinsicallysafesystems
【原文标准名称】:爆炸性气体环境用电气设备.第25部分:本质安全型系统
【标准号】:IEC60079-25-2003
【标准状态】:作废
【国别】:国际
【发布日期】:2003-08
【实施或试行日期】:
【发布单位】:国际电工委员会(IX-IEC)
【起草单位】:IEC/SC31G
【标准类型】:()
【标准水平】:()
【中文主题词】:爆炸危险;保护形式;装置;电路;电驱动装置;防爆;定义;文献工作;分类;描述;可燃性环境;接地;爆炸;i型防护电气设备;防护等级;作标记;电缆;爆炸区;本质安全型电气设备;评定;安全工程;设计;电气工程;类别;电气布线系统;试验;额定值
【英文主题词】:Ambienttemperature;Bodies;Cables;Categories;Circuits;Classification;Definitions;Degreesofprotection;Descriptions;Design;Documentations;Earthing;Electricwiringsystems;Electricalengineering;Electricalequipment;Electrically-operateddevices;Environment;Equipment;Evaluations;Explosionarea;Explosionhazard;Explosionprotection;Explosions;Flammableatmospheres;Installations;Intrinsicsafety;Intrinsicallysafeelectricaldevices;Marking;Ratings;Safetyengineering;Self-certificationschemes;Temperature;Testing;Typeiprotectedelectricalequipment;Typeofprotection
【摘要】:Containsthespecificrequirementsforconstructionandassessmentofintrinsicallysafeelectricalsystems,typeofprotection"i",intendedforuse,asawholeorinpart,inexplosiveatmospheresinGroupIIlocations.Intendedforusebythedesigner
【中国标准分类号】:K35
【国际标准分类号】:29_260_20
【页数】:136P;A4
【正文语种】:英语