JIS H8685-2-1999 铝及铝合金的着色阳极氧化覆层耐光度的加速试验方法.第2部分:耐紫外线光牢度试验

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【英文标准名称】:Nuclearpowerplants-Instrumentationandcontrolimportanttosafety-Hardwaredesignrequirementsforcomputer-basedsystems
【原文标准名称】:核电站.对安全性重要的仪器装置和控制系统.基于计算机系统的硬件设计要求
【标准号】:BSIEC60987-2007
【标准状态】:作废
【国别】:英国
【发布日期】:2007-09-28
【实施或试行日期】:2007-09-28
【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】:检验;交付使用;计算机硬件;计算机控制;计算机;控制与计算机技术;控制计算机;控制系统;控制工艺学;数据处理;定义;数字计算机;电气工程;环境;硬件;仪器装置;维修;核能;核电厂;核反应堆;核安全;核技术;核电站;加压水反应堆;反应堆装置;反应堆安全;反应釜;可靠度;检修;危险分析;安全;安全工程;安全研究;半导体工艺;规范(验收);监督(认可)
【英文主题词】:Checks;Commissioning;Computerhardware;Computerizedcontrol;Computers;Controlandcomputertechnology;Controlcomputer;Controlsystems;Controltechnology;Dataprocessing;Definitions;Digitalcomputers;Electricalengineering;Environment;Hardware;Instrumentation;Maintenance;Nuclearenergy;Nuclearpowerplants;Nuclearreactors;Nuclearsafety;Nucleartechnology;Nuclear-electricpowerstations;Pressurizedwaterreactors;Reactorinstrumentation;Reactorsafety;Reactorvessels;Reliability;Repair;Riskanalysis;Safety;Safetyengineering;Safetystudies;Semiconductortechnology;Specification(approval);Surveillance(approval)
【摘要】:1.1GeneralThisInternationalStandardisapplicabletoNPPcomputer-systemhardwareforsystemsofClass1and2(asdefinedbyIEC61513).Thestructureofthisstandardhasnotchangedsignificantlyfromtheoriginal1989issue;however,someissuesarenowcoveredbystandardswhichhavebeenissuedintheinterim(forexample,IEC61513forsystemarchitecturedesign)andreferencestonewstandardshavebeenprovidedwhereapplicable.Thetextofthestandardhasalsobeenmodifiedtoreflectdevelopmentsincomputersystemhardwaredesign,theuseofpre-developed(forexample,COTS)hardwareandchangesinterminology.Computerhardwarefacilitiesusedforsoftwareloadingandcheckingarenotconsideredtoformanintrinsicpartofasystemimportanttosafetyand,assuch,areoutsidethescopeofthisstandard.NOTE1Class3computer-systemhardwareisnotaddressedbythisstandard,anditisrecommendedthatsuchsystemsshouldbedevelopedtocommercialgradestandards.NOTE2In2006thedevelopmentofanewstandardtoaddresshardwarerequirementsfor“verycomplex”hardwarewasdiscussedwithinIECSC45A.Ifsuchastandardisdevelopedthenthatstandardwouldbeusedforthedevelopmentof“verycomplex”hardwareinpreferencetoIEC60987.1.2Useofthisstandardforpre-developed(forexample,COTS)hardwareassessmentAlthoughtheprimaryaimofthisstandardistoaddressaspectsofnewhardwaredevelopment,theprocessesdefinedwithinthisstandardmayalsobeusedtoguidetheassessmentanduseofpre-developedhardware,suchasCOTShardware.Guidancehasbeenprovidedinthetextconcerningtheinterpretationoftherequirementsofthisstandardwhenusedfortheassessmentofsuchcomponents.Inparticular,thequalityassurancerequirementsof4.3,concerningconfigurationcontrol,apply.Pre-developedcomponentsmaycontainfirmware(asdefinedin3.8),and,wherefirmwaresoftwareisdeeplyimbedded,andeffectively“transparent”totheuser,thenIEC60987shouldbeusedtoguidetheassessmentprocessforsuchcomponents.Anexampleofwherethisapproachisconsideredappropriateisintheassessmentofmodernprocessorswhichcontainamicrocode.Suchacodeisgenerallyanintegralpartofthe“hardware”,anditisthereforeappropriatefortheprocessor(includingthemicrocode)tobeassessedasanintegratedhardwarecomponentusingthisstandard.Softwarewhichisnotfirmware,asdescribedabove,shouldbedevelopedorassessedaccordingtotherequirementsoftherelevantsoftwarestandard(forexample,IEC60880forClass1systemsandIEC62138forClass2systems).1.3ApplicabilityofthisstandardtoprogrammablelogicdevicesdevelopmentI&CcomponentsmayincludeprogrammablelogicdevicesthataregiventheirspecificapplicationlogicdesignbythedesigneroftheI&Ccomponent,asopposedtothechipmanufacturer.Examplesofsuchdevicesincludecomplexprogrammablelogicdevices(CPLD)andfieldprogrammablegatearrays(FPGA).Whiletheprogrammablenatureofthesedevicesgivesthedevelopmentprocessesusedforthesedevices,someofthecharacteristicsofasoftwaredevelopmentprocessandthedesignprocessesusedforsuchdevices,areverysimilartothoseusedtodesignlogiccircuitsimplementedwithdiscretegatesandintegratedcircuitpackages.Therefore,thedesignprocessesanddesignverificationappliedtoprogrammablelogicdevicesshouldcomplywiththerelevantrequirementsofthisstandard(i.e.takingintoaccounttheparticularfeaturesofthedesignprocessesofsuchdevices).Totheextentthatsoftware-basedtoolsareusedtosupportthedesignprocessesforprogrammablelogicdevices,thosesoftwaretoolsshouldgenerallyfollowtheguidanceprovidedforsoftware-baseddevelopmenttoolsintheappropriatesoftwarestandard,i.e.IEC60880(Class1systems)orIEC62138(Class2systems).
【中国标准分类号】:F84
【国际标准分类号】:27_120_20;35_240_99
【页数】:32P.;A4
【正文语种】:英语


【英文标准名称】:Tabularlayoutsofarticlecharacteristicsforrollerbearingsandrollerelements
【原文标准名称】:第12部分:滚动轴承和滚动轴承元件用物品特性表格设计
【标准号】:DIN4000-12-1994
【标准状态】:现行
【国别】:德国
【发布日期】:1994-04
【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】:杆端;轴向止推轴承;球;关节轴承;线性运动循环轴承;滚动轴承元件;事物特性;轴承;径向轴承;外壳;滚动轴承
【英文主题词】:rodends;bearings;knucklebearings;balls;enclosures;axial-thrustbearings;rollingbearings;radialbearings;rollingelements;subjectcharacteristics;tabularlayoutsofarticlecharateristics;rollingbe
【摘要】:Tubularlayoutsofarticlecharacteristicsmakeitpossiblethatstandardizedandnon-standardizedarticleswhicharesimilartoeachothercanbegrouped,finedandselected.Thedocumentdealswiththefollowinggroupsofarticles:radialrollerbearings,rollerthrustbearings,needlebearingscombinations,rollingbearingscomponents.
【中国标准分类号】:J11;J04
【国际标准分类号】:21_020
【页数】:26P;A4
【正文语种】:德语