在用工业管道定期检验规程英文版Word格式.docx

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StateGeneralBureauforQualitySupervision,InspectionandQuarantine

DocumentofStateGeneralBureauforQualitySupervision,InspectionandQuarantine

GuoZheJianGuo[2003]No.108

NoticeonPrintingandIssuingtheRegulationforPeriodicInspectionofIn-serviceindustrialpiping（fortrail）

Allqualitysupervisionbureausofprovinces,autonomousregionsandmunicipalitiesdirectlyunderCentralGovernmentandallrelatedunits,

Tointensifythemanagementofsafetysupervisionofpressurevesselsandtostandardizetheperiodicinspectionofin-serviceindustrialpiping,theGeneralBureauhasformulatedtheRegulationforPeriodicInspectionofIn-serviceindustrialpiping（fortrail）,whichshallbeimplementedfromJune1,2003.Nowitisprintedandissuedtoyouandyouarekindlyrequestedtoimplementitearnestly.AnyprobleminimplementingshallbereportedtotheSafetySupervisionBureauforBoilersandPressureVesselsundertheStateGeneralBureauforQualitySupervision,InspectionandQuarantine.

Annex:

RegulationforPeriodicInspectionofIn-serviceindustrialpiping（fortrail）

StateGeneralBureauforQualitySupervision,InspectionandQuarantineofthePeople’sRepublicofChina（seal）

April17,2003

RegulationforPeriodicInspectionofIn-serviceindustrialpiping

Chapter1General

Article1Tointensifysafetysupervisionofpressurevesselsandtostandardizeinspectionofin-serviceindustrialpipingsoastosecuresafeoperationofindustrialpipingandthesafetyofpeople’slifeandproperty,thisregulationisworkedoutinaccordancewithrelevantstipulationsintheRegulationforSafetyManagementandSupervisionofPressureVessels.

Article2Thisregulationisbasicrequirementsfortheinspectionof,theevaluationoftheclassofsafetystatus（Forclassification,seeAppendixI）andhandlingofdefectsoftheon-linepiping.By-lawsfortheimplementationworkedoutbyrelevantunitshallmeettherequirementsinthisregulation.

Article3Thisregulationappliestoin-serviceindustrialpipingandattachedfacilitieswithintheapplicablescopeoftheRegulationforSafetyManagementandSupervisionofPressureVessels,howeverexcludingfollowingpiping:

（1）Pipingwithnominaldiameter≤25mm;

（2）Non-metalpiping;

（3）Pipingwithmax.workingpressure>

42MPaor<

0.1MPa.

Article4Theclassificationofin-serviceindustrialpipingwithinapplicablescopeofthisregulationisasfollows:

（1）IndustrialpipingmeetinganyoffollowingconditionsisGC1Class:

a.PipingdeliveringmediumwithextremetoxicityspecifiedinthenationalstandardsinforcetheClassificationforHazardofOccupationalContactPoisonsGB5044,

b.PipingdeliveringflammablegasesoffirehazardofCategoriesAandBorflammableliquidofCategoryAspecifiedinthenationalstandardsinforcetheSpecificationforFireproofDesignofPetrochemicalEnterprisesGB50160andtheSpecificationsforBuildingFireproofingGBJ16andthedesignpressureis≥4.0MPa;

c.Pipingdeliveringflammablefluidmediumortoxicfluidmediumwithdesignpressure≥4.0MPaanddesigntemperature≥400℃;

d.Pipingdeliveringfluidmediumwithdesignpressure≥10.0MPa.

（2）IndustrialpipingmeetinganyoffollowingconditionsisGC2Class:

a.PipingdeliveringflammablegasesoffirehazardofCategoriesAandBorflammableliquidofCategoryAspecifiedinthenationalstandardsinforcetheSpecificationsforFireproofDesignofPetrochemicalEnterprisesGB50160andtheSpecificationsforBuildingFireproofingGBJ16andthedesignpressureis<

4.0MPa;

b.Pipingdeliveringflammablefluidmediumortoxicfluidmediumwithdesignpressure<

4.0MPaanddesigntemperature≥400℃;

c.Pipingdeliveringflammablefluidmediumornon-toxicfluidmediumwithdesignpressure<

10.0MPaanddesigntemperature≥400℃;

d.Pipingdeliveringfluidmediumwithdesignpressure<

10.0MPaanddesigntemperature<

400℃;

（3）IndustrialpipingofGC2ClassmeetinganyoffollowingconditionsisGC3Class:

a.Pipingdeliveringflammablefluidmediumortoxicfluidmediumwithdesignpressure<

1.0MPaanddesigntemperature<

b.Pipingdeliveringnon-flammablefluidmediumornon-toxicfluidmediumwithdesignpressure<

4.0MPaanddesigntemperature<

Amongthem,theGC2andGC3industrialpipingcrossingrailwaymainlines,importantbridges,residencesandimportantindustrialfacilitiesanddeliveringmediumoffirehazardofCategoriesAandBandmediumhazardoftoxicity,theinspectiontothosecrossingpartshallbemadeinaccordancewithwhatspecifiedforpipingofGC1Class.

Article5Periodicinspectionofin-serviceindustrialpipingincludeson-lineinspectionandoverallinspection.

Article6Theorganizationandinspectorsengagingintheinspectionofin-serviceindustrialpipingshallperformfollowingduties:

（1）Inspectionshallbeperformedwiththescopeofapprovedqualification;

（2）Theyshallacceptsupervision,inspectionandprofessioninstructionofthequalitytechnicalsupervisiondepartment;

（3）Theyshallsecuretheinspectionqualityandberesponsiblefortheinspectionresults.

Chapter2On-lineInspection

Section1GeneralRules

Article7Theon-lineinspectionismadetothein-serviceindustrialpipingatrunningcondition,whichshallbemadeatleastonceayear.

Article8Theon-lineinspectionshallbemadebytheapplicationunit.Theapplicationunitmayalsoentrusttheon-lineinspectiontotheorganizationthathasqualificationforpressurepipinginspection.Theapplicationunitshallworkoutrulesforon-lineinspection.Inspectorsengaginginon-lineinspectionshallbeprofessionallytrainedandshallbereportedtothequalitytechnicalsupervisiondepartmentatprovinciallevelorauthorizedregional（municipal）levelforrecords.

Theapplicationunitshallworkoutinspectionplanandinspectionsolutionsinaccordancewithspecificconditionsandshallarrangetheinspectionwork.

Article9Theon-lineinspection,ingeneral,ismadewithmacroinspectionandinspectionofsafetyprotectionunitsasmainitems.Incaseofnecessity,thicknessmeasuringandmeasuringofvalueofelectricresistanceshallbemade.Ingeneral,followingpartsofpipingarekeyinspectionparts:

（1）Outletsofcompressorsandpumps;

（2）Compensators,Tees,bends（bendpipes）,reducers,branchconnectionsanddeadanglesofmediumflow;

（3）Pipingcomponentsandweldingjointsnearthedamagedsupportsandhangers;

（4）Locationswheretherewereproblemsaffectingsaferunningofpiping;

（5）Pipingsectorsatkeypositionofproductionprocessaswellaspipingsectorsconnectingwithimportantunitsorequipment;

（6）Pipingsectorsofbadworkingconditionsandwithchangingloads;

Article10Theon-lineinspectionitemsspecifiedinthischapteraregeneralrequirementsforon-lineinspection.Inspectorsmaydetermineactualinspectionitemsandinspectioncontentsandmakeinspectioninaccordancewithactualconditions.

Section2InspectionItemsandRequirements

Article11Forgeneralproceduresofon-lineinspection,seeFigure1.

Article12Beforeon-lineinspection,theapplicationunitshallmakereadyoftechnicalinformationofthekeyplanandprocessdrawings,singlelinedrawings,on-lineinspectionandoverallinspectionreportsinhistory,operationparameters,oftherelevantpipingtobeinspected.Theinspectors,onthebasisofreadingtheseinformation,shallinspectoperationrecords,start-upandshutdownrecords,recordsofmeasurestomonitorhiddendangerofpiping,recordsofconstructionofpipingreforming,reportsofmaintenanceandrepairingaswellasrecordsofhandlingofpipingtroublesandshallworkoutinspectionsolutionsaccordingtoactualconditions.

Preparationbeforeinspection

Inspectionofrecords

Sitemacroinspectionandotherinspections

Measuringwallthickness

Measuringelectricresistance

Inspectionofsafetyprotectionunits

Inspectionofmarksofpiping

Inspectionofmeasuringpointsofcreepexpansion

Inspectionofcathodeprotectionunits

Inspectionofvalves,flangesandexpansionjoints

Inspectionofsupportsandhangers

Inspectionofpositionsanddeformations

Inspectionofvibration

Inspectionofheatisolationlayerandanticorrosionlayer

Inspectionofleakage

Issuinginspectionreports

Treatmentafterinspection

Figure1GeneralProceduresofOn-lineInspection

Article13Macroinspectionincludesfollowingitemsandcontents

（1）Inspectionofleakage

Itismainlytocheckpipesandothercomponentsforanyleakage;

（2）Inspectionofheatisolationlayerandanticorrosionlayer

Itistochecktheheatisolationlayerforanydamage,peelingofforcoldleakageandchecktheanticorrosionlayertobesureitisingoodorder;

（3）Inspectionofvibration

Itismainlytocheckpipingforanyabnormalvibration;

（4）Inspectionofpositionsanddeformations

a.Checkthepositionsofpipingtobesurewhethertheymeetsafetytechnicalspecificationsandrequirementsinthenationalstandardsinforce;

b.Checktobesurewhetherthereisbumpingorfrictionbetweenpipesaswellasbetweenpipeandequipment;

c.Checkpipingtobesurewhetherthereisanydeflection,settlementorabnormaldeformationofpiping