DL T 868-2004 焊接工艺评定规程(英文版)

ICS03.100.30J33DLElectricPowerIndustryProfessionStandardofthePeople’sRepublicofChinaDL/T868-2004SupersedesSD340-1989CodeforWeldingProcessQualificationDL/T868-2004Issueddate:2004-03-23Implementationdate:June1,2004IssuedbyStateDevelopmentandReformCommission,ChinaContentsForeword1Coverage2NormativeReferenceDocuments3Terminology4GeneralRules5BasicRegulations6QualificationItemsandTestSpecimenPreparation7TestMethodsandQualificationCriteria8ProcedureandManagementofQualificationWorkAnnexA(InformativeAnnex)ClassificationofCommonForeignSteelMaterialsAnnexB(InformativeAnnex)FormatofWeldingProcessQualificationProspectus,SchemeandReportForewordAccordingtorequirementbyNotificationonConfirmationofplanfor1999’ElectricPowerIndustrialStandardDevelopmentandrevisionissuedbyStateEconomyandTradeCommission,SD340-1989CodeforWeldingProcessQualificationofBoilersandPressureVesselsinHeatPowerPlantsarerevised,whoseformatisarrangedasperDL/T600-2001BasicRegulationsforCompilationofElectricPowerIndustrialStandards.Inthestandardrevision,relatedinternationalstandards,statestandardsandrelateddomesticandregulationsarereferenced.Inordertocorrectlyperformweldingworksinvolvedinproduction,construction,inspectionandrepair,andreformationinelectricpowerindustry,weldingprocessguidedocumentsmustbesetupbyfollowingspecifiedprocedures.Thestandardprovidescriteriaforweldingprocessqualificationtobecompletedbeforeweldingprocessguidedocumentsaredrafted.BasicstandardsusedinweldingjobsinelectricpowerindustryareDL/T869-2004WeldingTechnologyCodeforHeatPowerPlantsandDL/T6578-1999GeneralSpecificationforSteelStructureWeldinginElectricPowerStations.Thestandardisarelativelyindependentonetosupportsaidstandards.Theoriginalcodehasbeenimplementedformorethan10years,promotingweldingtechnologydevelopmentinelectricpowerindustry,playingaverygoodroletoimproveweldingworkquality.Astechnologiesadvance,thecodeshowedsomeinadaptability.Therevisionmainlyexpandsapplicablecoverageofweldingmethods,increasesnewsteelbrandsusedinelectricpowerstationsduringrecentyears:improperlycomplicatedprocedureandcontentsintheoriginalcodeareadjusted.ThestandardbecomeseffectiveandsupersedesSD340-1989CodeforWeldingProcessQualificationofBoilersandPressureVesselsinHeatPowerPlants,coversallweldingprocessqualificationworkinelectricpowerindustry.ThestandardbecomeseffectiveandsupersedesSD340-1989.AnnexAandBtothestandardareinformativeannexes.ThestandardispresentedbyChinaAssociationofElectricPowerEnterprises.ThestandardshallbecentrallymanagedandinterpretedbyWeldingStandardizationCommitteeforElectricPowerStationsinElectricPowerIndustry.ThestandardisdraftedbyElectricPowerConstructionResearchInstituteandPowerSupplyDepartmentunderStatePowerCo.,LiaoningPowerPlant,LiaoningElectricPowerScienceResearchInstitute,andTianjinElectricPowerConstructionCo.ThestandardisspecificallydraftedbyGuoJun,YangJianping,LiWeidong,ZhangPeiliang,ZhangXinlinandLiuChuanyu.CodeforWeldingProcessQualification1CoverageThestandardspecifiesrules,testmethodsandcertifiedstandardforweldingprocessqualification(qualificationforshorthereafter)performedbeforefabrication,installationandrepairweldingjobsofsteelequipment,suchasboilers,pipelines,pressurevesselsandloadbearingstructuresinelectricpowerindustryandwelderskillexaminationareimplemented.Thestandardappliestoweldingprocessqualificationofweldingmethods,suchaselectrodearcwelding,tungstenelectrodeargonarcwelding,fusionelectrodegasprotectionwelding,corewireelectricarcwelding,gasweldingandhiddenarcwelding.2NormativeReferenceDocumentsClausescontainedinthefollowingdocumentsarereferredbythestandardandbecomeclausesofthestandard.Anyreferencedocumentwithdateindicatedandtheirsubsequentmodificationsheets(excludingerrorcorrections)orrevisededitionsdonotapplytothestandard,however,allpartieswhoenterintoanagreementbasedonthestandardareencouragedtoprobeintopossibilityofuseofthelatesteditionsofsuchdocuments.Foranyreferencedocumentwithoutdateindicated,theirlatesteditionsareapplicabletothestandard.GB/T228-2002MetalMaterialsMethodforTensileTestsunderAmbienttemperatureGB/T229MethodforMetalSharpeNotchImpactTestGB/T231.1MetalBrinellHardnessTestPartI:TestingmethodGB713SteelSheetsforBoilersGB/T983StainlessSteelWeldingElectrodesGB/T1220StainlessSteelRodsGB/T1221HeatResistingSteelRodsGB/T1591LowAlloyHighStrengthStructureSteelsGB/T2649SamplingMethodforMechanicalPropertyTestofWeldingJointsGB/T2650MethodforWeldingJointImpactTestGB/T2651MethodforWeldingJointTensileTestGB/T2653MethodforWeldingJointbendingandCrushingTestGB/T2654MethodforWeldingJointandBuilt-upWeldingMetalHardnessTestGB/T3077AlloyStructureSteelsGB/T3087SeamlessSteelTubesforLowandMiddlePressureBoilersGB/T3274CarbonStructureSteelsandLowAlloyStructureSteelsHotRolledThickSteelPlatesandStripsGB/T3280ColdRolledStainlessSteelSheetsGB/T3323RadiographyandQualityClassificationofSteelfusionbuttweldingjointsGB/T4237HotRolledStainlessSteelSheetsGB/T5117CarbonSteelWeldingElectrodesGB/T5118LowAlloySteelWeldingElectrodesGB/T5293-1999CarbonSteelWeldingWiresandFluxesforHiddenArcWeldingGB5130