【英文标准名称】:Reliabilitydataanalysistechniques-Proceduresforcomparisonoftwoconstantfailureratesandtwoconstantfailure(event)intensities
【原文标准名称】:可靠性数据分析技术两种恒定失效率和两种恒定失效(事件)密度的比较程序
【标准号】:IEC61650-1997
【标准状态】:现行
【国别】:国际
【发布日期】:1997-08
【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/TC56
【标准类型】:()
【标准水平】:()
【中文主题词】:衰弱率;失败分析;电气工程;可靠性管理;数据分析;比较;可靠性分析;数学计算
【英文主题词】:Comparison;Dataanalysis;Electricalengineering;Failureanalysis;Failurerates;Mathematicalcalculations;Reliabilityanalysis;Reliabilitymanagement
【摘要】:ThisInternationalStandardspecifiesprocedurestocomparetwoobserved-failurerates;-failureintensities;-rates/intensitiesofrelevantevents.Theproceduresareusedtodeterminewhetheranapparentdifferencebetweenthetwosetsofobservationscanbeconsideredstatisticallysignificant.Itisassumedthatthetimeintervalsto/betweenthefailures(events)areindependentandidenticallyexponentiallydistributedduringtheobservationperiod(thatis,theaccumulatedrelevanttesttime).NOTE-Thisassumptionimpliesthatthefailurerate/intensityisconstant.Itisfurthermoreassumedthattherearetechnicalorotherreasonstobelievethatadifference(eitheranimprovementordeterioration)mightexistbetweentheobservedreliabilitycharacteristicofthetwosetsofitemsundercomparison.Someexamplesoftypicalapplicationsaredescribedin5.4.Themethodsaredesignedashypothesistestswhichstate,withaspecifiedrisk(thesignificancelevel),whetherthetwoseriesofobservationsbelongtothesamepopulationorthesameprocess,thatistheyhavethesametruemeanvalue.NOTE-Failurerate,whichisrelevanttonon-repaireditems,isassociatedwithadistributionoftimestofailure.Failureintensity,whichisrelevanttorepaireditemsonly,isassociatedwithapointprocessdescribingase-quenceofevents,forexampletimesbetweenfailuresonatimeaxis.Theproceduresarenotrestrictedtocomparisonoffailurerate/intensity,butcanbeappliedtoobservationsoftwoseriesofanyrelevantevents,providedtheaboveassumptionsarevalid.NOTE-Thetwoseriesofobservationsmaybeofitemsfromthesamepopulation,orthesameitemunderdifferentconditions(forexampleenvironmentandload),orjustcomparableseriesofevents(forexamplecaraccidentsonaroad).Numericalmethodsandagraphicalprocedureareprescribed.Theobservationperiodsrelevanttothetwoseriesdonotneedtobeequal,butiftheyare,themethodsareverysimple.
【中国标准分类号】:A00
【国际标准分类号】:03_120_01
【页数】:39P.;A4
【正文语种】:英语


【英文标准名称】:Transportablegascylinders-Specificationforweldedpressuredrumsupto1000litrecapacityforthetransportofgases-Designandconstruction;GermanversionEN14208:2004
【原文标准名称】:可运输气瓶.气体运输用容量在1000升及以下的焊接压力鼓形物的规范
【标准号】:DINEN14208-2004
【标准状态】:现行
【国别】:德国
【发布日期】:2004-05
【实施或试行日期】:2004-05-01
【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】:定义;材料;制造;气体类型;设计;气阀;试验;兼容性;金属材料;储气瓶;焊接的;生产;检修;压缩气体;易动的;作标记;焊缝;鼓形桶;阀门;压缩气体设备;气体;名称与符号;规范;千斤顶;储气罐;焊接;焊接工艺
【英文主题词】:
【摘要】:ThisEuropeanStandardspecifiestheminimumrequirementsforthematerial,design,constructionandworkmanship,inspectionandtestingatmanufactureofrefillableweldedsteelgasdrumsofvolumes150litresupto1000litresforcompressedandliquefiedgases.Cylindricalandsphericalcontainersarecovered.#,,#
【中国标准分类号】:J74
【国际标准分类号】:23_020_30
【页数】:44P;A4
【正文语种】:德语