ISO/IEC TS 15504-8-2012 信息技术.工艺评估.第8部分:IT业务管理用样本过程评定模型

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【英文标准名称】:StandardSpecificationforDeformedandPlainStainless-SteelBarsforConcreteReinforcement
【原文标准名称】:混凝土配筋用变形和普通不锈钢钢筋的标准规格
【标准号】:ASTMA955/A955M-2010a
【标准状态】:现行
【国别】:
【发布日期】:2010
【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】:A01.05
【标准类型】:(Specification)
【标准水平】:()
【中文主题词】:钢筋混凝土;耐腐蚀性;变形(突出物);磁性能;不锈钢筋
【英文主题词】:concretereinforcement;corrosionresistance;deformations(protrusions);magneticproperties;stainlesssteelbars
【摘要】:1.1Thisspecificationcoversdeformedandplainstainless-steelbarsforconcretereinforcementincutlengthsandcoilsusedinapplicationsrequiringresistancetocorrosionorcontrolledmagneticpermeability.ThestandardsizesanddimensionsofdeformedbarsandtheirnumericaldesignationshallbethoselistedinTable1.Thetextofthisspecificationreferencesnotesandfootnoteswhichprovideexplanatorymaterial.Thesenotesandfootnotes(excludingthoseintablesandfigures)shallnotbeconsideredasrequirementsofthespecification.1.1.1Supplementaryrequirement(S1)ofanoptionalnatureisprovided.Itshallapplyonlywhenspecifiedbythepurchaser.Inordertoobtainacontrolledmagneticpermeabilityproduct,steelconformingtoSupplementaryRequirementS1shouldbeordered.1.2Thechemicalcompositionofthestainlesssteelalloyshallbeselectedforsuitabilitytotheapplicationinvolvedbyagreementbetweenthemanufacturerandthepurchaser.Thisisanimportantconsiderationinachievingthedesiredcorrosionresistanceorcontrolledmagneticpermeability,orboth,becausethesepropertiesarenotprovidedbyallstainlesssteels.Note18212;ThealloysshowninTable2havefoundthemostuseinNorthAmerica.Otheralloysmayalsoprovidedesiredproperties;consultwiththemanufacturerforstainlesssteelalloypropertiesandavailability.1.3Barsareofthreeminimumyieldstrengthlevels,namely,40000[280MPa],60000[420MPa],and75000psi[520MPa],designatedasGrade40[280],Grade60[420],andGrade75[520],respectively.1.4Plainroundsinsizesuptoandincluding2in.[50.8mm]indiameterincoilsorcutlengths,whenordered,shallbefurnishedunderthisspecificationinGrade40[280],Grade60[420],andGrade75[520],respectively.Bendingproperties,whenrequired,shallbebyagreementbetweenthemanufacturerandpurchaser.Requirementsprovidingfordeformationsandmarkingshallnotbeapplicabletoplainbars.1.5Weldabilityofmoststainlesssteelcompositionsisgenerallygood,however,pre-weldorpost-weldprocedures,orboth,arenecessary.Wherematerialistobewelded,aweldingproceduresuitableforthechemicalcompositionandintendeduseorserviceshallbeused.Retestingofphysicalpropertiesshouldbeconsideredfollowingweldingproceduresdependinguponthesteelcompositionandweldingoperationinvolved.Note28212;ItisrecommendedthattheuserconsultthemanufacturerforinformationavailablefromtheNickelDevelopmentInstitute(NIDI)(Toronto,Canada).1.6Thisspecificationisapplicableforordersineitherinch-poundunits(asSpecificationA955)orinSIunits(asSpecificationA955M).1.7Thevaluesstatedineitherinch-poundorSIunitsaretoberegardedseparatelyasstandard.Withinthetext,theSIunitsareshowninbrackets.Thevaluesstatedineachsystemarenotexactequivalents;therefore,eachsystemshallbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsmayresultinnonconformancewiththestandard.1.8Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:H49
【国际标准分类号】:77_140_60
【页数】:11P.;A4
【正文语种】:


【英文标准名称】:Insulationco-ordination-Applicationguide
【原文标准名称】:绝缘配合.应用指南
【标准号】:BSEN60071-2-1997
【标准状态】:现行
【国别】:英国
【发布日期】:1997-04-15
【实施或试行日期】:1997-04-15
【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】:选择;过电压保护;架空线;电气设备;应力;分类系统;高压电器;统计方法分析;过电压;防护电气设备;电绝缘;过电压保护装置;三相电流;额定电压;合作;数学计算;介电强度;余隙距离;脉冲电压;电力设备;安全系数;耐电压;统计分布;高压设备
【英文主题词】:Applicationrule;Co-ordination;Dimensioning;Electricalengineering;Electricalequipment;Equipment;Guidebooks;Guidelines;Highvoltage;Insulationcoordination;Insulationlevels;Insulations;Lightningsurge;Marking;Mathematicalcalculations;Overheadpowerlines;Overvoltage;Plant;Ratedvoltage;Recommendedapplication;Servicevoltage;Specification(approval);Stations;Symbols;Testing;Three-phasecurrent;Three-phasenetworks;Voltagestress;Withstandvoltage
【摘要】:ThispartofIEC71constitutesanapplicationguideanddealswiththeselectionofinsulationlevelsofequipmentorinstallationsforthree-phaseelectricalsystems.ItsaimistogiveguidanceforthedeterminationoftheratedwithstandvoltagesforrangesⅠandⅡofIEC71-1andtojustifytheassociationoftheseratedvalueswiththestandardizedhighestvoltagesforequipment.Thisassociationisforinsulationco-ordinationpurposesonly.Therequirementsforhumansafetyarenotcoveredbythisapplicationguide.Itcoversthree-phasesystemswithnominalvoltagesabove1kV.Thevaluesderivedorproposedhereinaregenerallyapplicableonlytosuchsystems.However,theconceptspresentedarealsovalidfortwo-phaseorsingle-phasesystems.Itcoversphase-to-earth,phase-to-phaseandlongitudinalinsulation.Thisapplicationguideisnotintendedtodealwithroutinetests.Thesearetobespecifiedbytherelevantproductcommittees.Thecontentofthisguidestrictlyfollowstheflowchartoftheinsulationco-ordinationprocesspresentedinfigure1ofIEC71-1.Clauses2to5correspondtothesquaresinthisflowchartandgivedetailedinformationontheconceptsgoverningtheinsulationco-ordinationprocesswhichleadstotheestablishmentoftherequiredwithstandlevels.Theguideemphasizesthenecessityofconsidering,attheverybeginning,allorigins,allclassesandalltypesofvoltagestressesinserviceirrespectiveoftherangeofhighestvoltageforequipment.Onlyattheendoftheprocess,whentheselectionofthestandardwithstandvoltagestakesplace,doestheprincipleofcoveringaparticularservicevoltagestressbyastandardwithstandvoltageapply.Also,atthisfinalstep,theguidereferstothecorrelationmadeinIEC71-1betweenthestandardinsulationlevelsandthehighestvoltageforequipment.Theannexescontainexamplesanddetailedinformationwhichexplainorsupporttheconceptsdescribedinthemaintext,andthebasicanalyticaltechniquesused.
【中国标准分类号】:K04
【国际标准分类号】:29_080_01
【页数】:134P.;A4
【正文语种】:英语