Piping Inspection Code:In-service Inspection Rating Repair and Alteration of PipingSystems API570 FIFTHEDITION FEBRUARY2024 API American Petroleum Institute CoP
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Contents 1 Scope.. 1.1 General Application.... 1.2 SpecialApplications 1.3 Fitness-For-Service and Risk-based Inspection. 2 NormativeReferences. 3 Terms Definitions，Acronyms and Abbreviations. 4 3.1 Terms and Definitions. .4 3.2 Acronyms and Abbreviations. ...16 4 Owner-OperatorInspectionOrganization 18 4.1 General 18 4.2 AuthorizedPipingInspectorQualificationand Certification. 18 4.3 Responsibilities... .18 5 Inspection Examination andPressureTestingPractices. 23 5.1 Inspection Plans.... 23 5.2 RBI..... 25 5.3 PreparationforInspection 25 5.4 26 5.5 GeneralTypesof InspectionandSurveillance 27 5.6 CMLS... 30 5.7 ConditionMonitoringMethods 32 5.8 CUI Inspection. 35 5.9 MixingPoint Inspection... 36 5.10 InjectionPointInspection. 36 5.11 PressureTestingofPipingSystems 38 5.12 MaterialVerification andTraceability. 40 5.13 Inspection ofValves. 40 5.14 In-serviceInspectionof Welds. 41 5.15 InspectionofFlangedJoints .42 5.16 InspectionofPiping in HFAcidAlkylationProcessUnits. ..43 6 Interval/FrequencyandExtentof Inspection 43 6.1 General.. 43 6.2 InspectionduringInstallation andServiceChanges. 44 6.3 Pipingnsection Planning..... 45 6.4 ExtentofVisualExternalandCulInspections 48 6.5 ExtentofThicknessMeasurementInspectionandDataAnalysis. 49 6.6 ExtentoflnspectionsonSBP Deadlegs AuxiliaryPiping andThreadedConnections.. 52 6.7 Inspection and MaintenanceofPRDs... 54 7 InspectionData Evaluation Analysis andRecording... 55 7.1 CorrosionRateDetermination..... 55 7.2 RemainingLifeCalculations...... 57 7.3 Newly InstalledPipingSystemsor ChangesinService.... 57 7.4 Existing and ReplacementPiping.... 57 7.5 MAWPDetermination... 58 7.6 RequiredThicknessDetermination. 58 7.7 Assessment of Inspection Findings. 58 7.8 Piping StressAnalysis.... 59 7.9 Reporting andRecordsforPipingSystemInspection.. 59 7.10 InspectionRemendationsforRepairorReplacement... 62 7.11 InspectionRecordsforExternal Inspections.... 62 7.12 Piping Failure and Near-miss Reports... ..63 AI CgP Nouctinrninmdot PovidbyAcsndlowthAPI se from Acouris
7.13 Deferral ofInspections Tests and Examinations... 63 7.14 Deferralof InspectionRepairRemendationDueDates.. 64 8 Repairs Alterations and Rerating ofPipingSystems. 64 8.1 RepairsandAlterations...... 64 8.2 Welding and HotTaping.. 67 8.3 Rerating.... ....72 9 Inspection of Buried Piping..... 72 9.1 General. 72 9.2 Frequency and Extentof Inspection.... 73 9.3 RepairstoBuriedPipingSystems .75 9.4 Records... .75 AnnexA(informative)Inspector Certification. ..76 AnnexB(informative)Requestsfor Interpretations. ..78 AnnexC(informative)TwoExamplesof the Calculation of MAwPllustrating the Useof the Corrosion Half-lifeConcept. .79 Bibliography.. ..80 Figures 1 Typical InjectionPointPiping Circuit. 37 2 LifeCycleofPipingSystems... Tables 1 RemendedMaximumInspectionIntervals...... 2 RemendedExtentofCul InspectionFollowingVisual InspectionforSusceptible 3 WeldingMethodsasAlternativestoPWHTQualificationThicknessforTestPlates andRepair Grooves..... ...70 Frequencyof InspectionorAlternateLeakTestingforBuriedPipingwithout Effective CathodicProtection. C.1 Examplesof theCalculationof MAWPllustratingtheUseof theCorrosion Half-life Concept... ...79 Copyrigt American Perolumnsitut Provided by Acursnder loensewthAPI
API 570-2024 管道检查规范管道系统的在役检查、评级维修和改造(英文版).pdf
