船检检验教程(船体) 教学课件PPT.ppt

april2008 classificationsurveyduringconstruction hull part1hullsurveysystempart2surveyonsite hullsurveysystemoutline qcsystemofshipyard generalmanager managerforhull surveyorincharge managersinhld eqdandsvd projectteam rules guidanceclassnkinstructions indirectsurvey qcinvestigation directsurvey inspectionrecord newbuildingandprojectteamstage planapproval rulespartb2 1 1 investigationofqccondition rulespartc1 1 17 1andpartm1 1 2 1 meetingwithpersonsconcerned owner shipyard etc surveyduringassemblyprocessandblockinspection rulespartb2 1 4 surveyinbuildingberth rulespartb2 1 4 surveyafterlaunching rulespartb2 1 4 2 3 1and2 3 2 managersinchargeinhld eqdandsvd gm manager h andsurveyorsinchargeinservicesite projectteam classentryapplication workcommence laydown launching delivery meetingtobeheldanytimeduringeachstage flowofplan drawingapproval localoffice headoffice shipyard 1 2 3 1 plan drawingapprovedbyho examinedandapprovedbyhoandreturntoshipyard 2 plan drawingexaminedbyho examinedbyhoandreturntoshipyardwithstampof examined 3 plan drawingreferenceforho referenceforhoandreturntolocalofficeexceptcalculationsheet 4 plan drawingapprovedbylocaloffice examinedandapprovedbylocalofficeandreturntoshipyard 5 plan drawingreferenceforlocaloffice referenceforlocalofficeandnoreturntoshipyard 1 2 3 4 5 1 2 3 1 2 4 managementofsurveyattendanceandinvestigationofqualitymanagement surveyattendance managementofdailysurveyinvestigationofqualitymanagementsystemofshipyard periodicalinvestigation annualinvestigation occasionalinvestigationsiteexecutioninvestigation monthlyinvestigationpatrolsurvey formir formir h formir h a948 formir h attachment formb recorda forms periodicalinvestigation timing a whentheshipyardbuildsashipbeingclassedwithnkforthefirsttime b whenabout5yearshavepassedfromthepreviousperiodicalinvestigation c whenthesizeofshipbeingclassedwithnkbreaksthrough10 000 30 000or100 000gtforthefirsttime d whentheshipyardre startsbuildingashipbeingclassedwithnkafterablancperiodofmorethan2yearscontentsfacilitiesandfeaturesofconstruction numberofwelders systemanddetailsforqualitycontrol etc seerecorda recordrecordatobeprepared annualinvestigation timingwhenabout1yearpassedfromthelastperiodicalinvestigationorannualinvestigationcontentsabout20 ofthecontentsforperiodicalinvestigationrecorsrecordatobeprepared occasionalinvestigation timing whenorganizationorlayoutofshipyardwhichhaveinfluenceonqualitycontrolischanged whenaseriousdeficiencyisfoundduringregularsurvey formstobeprepared whenshipyardbuildsashipbyusingspecialproductionprocessorspecialmaterialforthefirsttime whendeemednecessarybythesocietycontentsitemsdeemednecessaryinrelationtotheabove monthlyinvestigation timingnotwithstandingitsnaming theinvestigationshouldbedoneduringdailysurvey reportmaybedone1or2monthly contentsidentificationofsteel weldingprocedure controlofweldingmaterials observanceofthequalitystandard etc aretobeinvestigatedateachstagesuchasin shopfabrication panelfabrication blockassemblyandblockloadingrecordrecordbtobeprepared patrolsurvey thepurposeof patrolsurvey istograsptheactualcircumstanceofqualitycontroloftheshipyardthroughaninvestigationoffollowingpointsduringthefabrication itmaybeimpossibleatblockinspection weldingprocedure temporaryfitting edgepreparation position backgouging sequence welder squalification etc handlingofdefectivework material size accuracyoffitting record etc surveyorinchargeexecuteapatrolsurveyatanytimeoffollowingoccasions whilehefollowsanapplicationsubmittedbytheshipyardforusualsurvey topassthroughtheworkshoponhiswaytoandfromtheplaceofusualsurvey toexecuteinhissparetimeofsurvey etc theresultsofpatrolsurveyshouldbeperiodicallyreportedtothegeneralmanagerasthemonthlyreportofinvestigationofqcoftheshipyardsurveyorshouldreviewhisattendanceofsurvey suchastimingandmethod accordingtotheresultsoftheinvestigationofqcoftheshipyard backgroundofpatrolsurvey thepresenceofthesurveyorisrequiredatthefollowingstagesoftheworkinrelationtohullandequipment extract 4 whendesignatedbythesocietyduringshopworkorsub assembly 17 whendeemednecessarybythesociety rules partb chapter2 2 1 4 1 fortheeffectivenessofthecontroloftheweldingworkstobecarriedoutbythemanufacturer thesocietyistoconfirmtheconditionduringweldingworksatanappropriateintervalacceptedbythesurveyor whendeemednecessary inthiscase themanufactureristogivetheconveniencetothesurveyorandtopermitthesurveyortoenterallrelevantareasoftheyard rules partm chapter1 1 3 2 1 exampleofshipyardlayout acceptanceinspection blockinspection blockerection fittings etc stabilityexperiment functiontestsseekfortheopportunityofpatrolsurvey verticalinspectionofweldingwork foreachweldingwork materialcontroledgepreparationfittingaccuracyaftertackweldingmisalignmentbetweenimportantmembersfittingofbackingmaterialandrun off tabconsiderationforweldingenvironmentpre heatingetc weldingsequenceexecutionofweldingbackchippingremovingjigsetc forshipyard approvalofweldingprocedurewelder squalification duringweldingwork designatedsurvey rulespartbandm patrolsurvey foreachship approvalofweldingapplicationplanandndtplan afterweldingwork visualinspectionnon destructiveinspection investigationofqccondition etc examinationofdocument part2surveyonsite 1acceptanceinspection2welding3shopworkandsub assembly4blockinspection5blockjoiningonbuildingberth6rudder7finalinspectionofhullcompartment8tightness hydrostatictest9ndtofweldedjoints10measurementofprincipaldimensions 11paint12markings13piping14fireprotection15closingappliances16stabilityexperiments17navigationbridgevisibility18seatrial 1 acceptanceinspection purposeofinspectiontoconfirmthatthematerialswhichashipyardplacedanorderoutside andwasproducedatotherplaceshavebeeninspectedbythesociety andthattheyhavenotbeendamagedduringtransportationobjectofinspectionmaterialandequipmentmanufacturedbysubcontractorsoutsidetheshipyard suchasrolledsteel steelcastingandforging weldingmaterials constructionmaterialsforfireprotection anchors anchorchains ropes scuttles hatchtarpaulins hullblocks steelhatchcovers watertightdoors steeringgears etc mannerofinspection verificationofissueofcertificatetothematerialcarriedintoshipyard verificationofthematerialcarriedintoshipyardandcontentofcertificateiscorrespondingtocontentdemandedbyrule verificationofstampedserialnumber identificationsymbolandidentificationnumberonthematerialcarriedintoshipyardiscorrespondingtocontentofcertificate forhullblocksmanufacturedbysubcontractors see4 below makersandacceptanceinspection stampsandcertificate locationofstamp rolledsteel millsheetisnecessaryforthelaterfollow upsurvey notonlycollationofthesteelplateatacceptanceinspection cast forgedsteel objectofinspection stems sternframes rudderstocks rudderfittings ruddercouplingbolts rudderpintles rudderhorns shaftbracketsandvalvesrequiredtobemadeofcaststeelbytherulesmannerofinspection verificationofinspectionreportbytheshipyard copyofcertificateissuedbynk whenapplicable andrubbedcopyofstampandmarkingonthearticle surveyor sattendanceattheinspectionisnotnecessaryexceptforvalves whenimportantmemberssuchassternframe rudderstock etc aremachined thereportofin houseinspectionresultsshouldbesubmitted andprocessshouldbeattendedifdeemednecessary weldingmaterial objectofinspection weldingrods wireforsemi automaticwelding corewireandfluxforautomaticweldingmannerofinspection verificationofbrandtoconfirmthattheyareoftypeapprovedbynk referenceshouldbemadetotheapprovedweldingproceduresapplicabletotheshipinquestion actualstatusandcontrolconditionoffacilitiesfordryingweldingmaterialsaretobeinvestigatedattheinitialstageofconstruction materialforfireprotection objectofinspection non combustiblematerials a b and c classdivisions flameretardantbasematerials materialsforprimarydeckcovering fireretardantveneers fireretardantcoatings fireretardantsurfacefloorings firedampersmannersofinspectionreferringthelistofbrandattachedtotheapproveddrawings materialsshouldbeconfirmedandtheresultsoftheinspectionshouldberecordedthesurveyorinchargeshouldattendthesiteexecutionatleastonceinordertoconfirmtheappropriateuseofmaterials andtheresultsoftheinspectionshouldberecorded othermaterialsandequipment anchors anchorchainsandropes collatenkstampandcertificate verifyifthetype diameter length weightandotherparticularsareappropriateasequipmentfortheshipinquestionscuttlesafterinstallingscuttlesontheship thecorrectapplicationofthescuttlesistobecheckedatanappropriateopportunitysuchastightnesstesthatchtarpaulinsnkstampandcertificatearetobecollatedatanappropriateopportunityhullblocksinquiretheshipyardforanydamageduringtransportation inspectthemifnecessaryotherscollationofrubbedcopyofstampandcertificate ifarticlesaresubjecttotest theoriginalshouldbeconfirmedatsuchopportunity 2 welding outline kindofwelding testofweld weldingprocedurespecificationwelderqualificationweldingapplicationplanweldingworks aproperweldingshallbedoneby qualifiedwelder with approvedmaterials inaccordancewith approvedprocedure kindofweldingprocessclassificationbytheory arcwelding inertgasshieldedarcweldingsubmergedarcweldingself shieldedarcwelding oxyacetylenewelding gaswelding electro gasweldingelectro slagweldingplasmaarcwelding shieldedmetalarcwelding co2arcwelding magwelding tigweldingmigwelding testofweld test destructivetest non destructivetest mechanicaltest tensiletestbendingtesthardnesstestimpacttest chemicalanalysis corrosiontestmacroscopictestmicroscopictest chemicaltest metallurgicaltest visualinspectionliquidpenetranttestultrasonictestmagnetictestradiographictest weldingproceduremathermetal grade thickness weldingconsumable blandname grade shieldgasandbacking kindofjoint buttorfillet weldingpositiondetailsofedgepreparationsaccordingtothethicknessofbasemetal includingstandardtolerancesforedgepreparationcondition i e grooveangle rootgap andmisalignment numberofelectrodesandarrangement leglengthorthroatthickness layerorpasssequenceandweldingparameter amperage voltage weldingspeed heatinput current preheatingandinterpasstemperaturepostweldheattreatmentotherconditionsnecessaryfortheweldingprocedure makerneedstakeapprovalof weldingprocedureand relatedspecification chapter2 2 2 1 partm andfollowingparticularsmusthavebeendescribedintheweldingprocedurespecification chapter4 partm weldingprocedurespecification qualificationtestofweldingprocedurebuttwelding finishedinspectionweldedsurfaceistoberegularanduniformandistobefreefrominjuriousdefects suchascracks undercuts overlaps etc tensiletesttheultimatetensilestrengthisnottobelessthantheminimumultimatetensilestrengthspecifiedforthebasemetalbendtestthereistobenocracknoranyotherdefectgreaterthan3mminlengthinanydirectiononthesurfaceofbentspecimenimpacttesttheminimumabsorbedenergyofthreespecimensaretobeinaccordancewiththerules thepercentbrittlefractureofthespecimensistobemeasured macro structureinspectiontheetchedsectionistoshownocrack poorpenetration lackoffusionandotherinjuriousdefectsnon destructivetestinternalinspection x ray us andsurfaceinspection mp liquidpenetrant aretoshownocrackandotherinjuriousdefects qualificationtestofweldingprocedurefilletwelding finishedinspectionfilletweldingistohavearegularanduniformsurface andistobefreefromcracks undercuts overlaps andotherinjuriousdefectsmacro structureinspectionweldedjointistobefreefromexcessivedifferencebetweenupperandlowerfilletlength cracksandotherinjuriousdefectsfracturetesttheremainingtestassembliesafterthemacro structurespecimenhasbeenremovedaretobebrokenbypressingasshowninthesketch thereistobenocracks blowholes poorpenetrationsandotherinjuriousdefectsinthefracturedsurfacenon destructiveinspectionsurfaceinspection mp liquidpenetrant istoshownocrackandotherinjuriousdefects welderqualificationcertificate validfor3years eachwelderintendedtoengageintheautomaticweldingoperationistobeofawellexperiencedwelderforthespecificweldingworkconcerned horizontal n kindsofwelder arcwelding grade thickness classesofqualification weldingposition abothsideweldingincludingbackchippingandbackwelding nonesideweldingwithoutbacking basicposition start grade1andgrade2arenecessaryinshipbuildingusually flat f vertical v h overhead o allposition z pipe p grade3 t norestriction welderqualification grade2 t 19mm grade1 t 5mm kinds gradesandclassesofqualification weldingpositionatqualificationtest thespecimensaretoshowneithercracknorseriousdefectgreaterthan3mminlengthinanydirectionontheoutsidesurfaceduetothebending plate pipe weldingapplicationplan weldingworks table1 selectionofweldingconsumables table2 controlstandardsforprocessingandweldingforrolledsteelsforhull 3 shopworkandsub assembly patrolsurvey investigationofqualitycontrol qualitystandard patrolsurveyduringshopworkandsub assembly identificationofsteelsconfirmationofproperuseofsteelsaccordingtotheapproveddrawingsaccuracyofedgepreparationproperfittingofstrongback temporarytack welding run offtab etc accuratefittingofmembersandcorrectivemeasuresfordefectsproperweldingsequenceadequateweldingmethod includingbackgougingconditions conformingtoapproved weldingprocedurespecification strictenforcementofrulesforarcstrikingandshortbeadespeciallyforhightensilesteelandgradeemildsteelqualificationofwelders agreedrulesandqualitystandard ship sowner classnk shipbuilder specification conformancetonkrules qualitystandardoftheshipbuilder rulesetc rules qualitystandard jsqs srqs etc rulesetc rules qualitystandard seebelow fortheallowablecriteriaofaccuracy refertotheshipyard sstandardrecognizedbythesociety ifavailable inprinciple suchstandardshouldbeequivalentorsuperiortojsqsorsrqs ifsuchstandardisnotavailable refertojsqsorsrqsjsqs japaneseshipbuildingqualitystandardsrqs iacs shipbuildingandrepairqualitystandard appropriatearrangementofmaterial 1 arethesteelplatesperapprovedplan 2 arethematerialandsizereasonablecomparedtomillsheets 3 istheactualblockasperthisplan cutting allowabledepthofgasnotchinedgepreparationis forabuttweldingwithin0 6lamidships 2mmorless elsewhere 3mmorless accuracyforgascutting gasnotchatfreeedge nonotchisallowedatthoselocations thenotchshallbeweldedupavoidingshortbeadandgroundsmoothly allowabledepthofnotchatotherlocationsoffreeedgeis1mm accuracyofprocessing edgepreparationforbuttwelding partc1 2 3 2requiresthistaperingnotmorethan1 3whenthereisthedifferenceinthethicknessover4mm samethickness differentthickness jointwithcast forgedsteel kindsandsizesoffilletweld lapjoint teejoint intermittentweld 1 thesizefforteejointsisingeneraltobedeterminedaccordingtothewebthicknessofstiffenertodeckplate innerbottomplate bulkheadplate shellplateandfaceplate andthethicknessofthethinnerplateincaseofconnectionofothermembers2 lapjointistohavethefilletsizeoff1 accordingtothethicknessofthethinnerplate3 intermittentfilletweldistobestaggeredandwatendsistobeweldedonbothsides4 theminustoleranceforfilletsizeistobe10 ofthenominalsize deep fullpenetration usually edgepreparationisnotrequiredforfilletweld exceptatintersectionofimportantmembers instead sizeoffilletshallbeincreasedaccordingtothethicknessofthemember slotweld precautionbeforewelding cleanlinessofgroove jigforpositioning tackweld tackweldshouldbeshiftedfromtheendsofwelding avoid shortbead buttjoint filletjoint positioningofimportantmembers securingjig strongback bridge shouldbeusedforimportantmembersinplaceoftackweld run offtab tabsshouldbeprovidedatbothendsofbuttwelding becausedefectsarelikelytooccurhere tabsarecutaftercompletionofwelding toinspectfordefects appropriategapforone sidewelding ifthegapistoosmall penetrationmaybeinsufficient weldingsequence 1 7 both sideswelding xgroove crosswelding finishbothsidesfirst connecttwostrips cracksarelikelytooccurattheintersectionofwelding weldingsequence 2 7 t shapedjoint ifseamisnotwithheld 1 buttjointwillbedeformedduetoheat 2 endofbuttjointoverlapsontheseam anddefectislikelytooccur weldingprocedure 3 7 jointofinternalmembers 1 ascallopisprovidedtopasstheweldoffaceplate ascallopinhigh stresszoneshouldbeclosedlater 2 usually thickerplateshallbeweldedfirst toavoiddeformationduetotheheat weldingprocedure 4 7 shellplatewithinternalmember shellplate faceplateofinternalmember webplateofinternalmember filletweldingbetweenshellplateandwebplate weldingprocedure 5 7 collarplate weldingprocedure 6 8 closingroundhole thickness 25mm thickness 25mm weldingprocedure 7 7 closingaccesshole co2semi automaticweldingdefectinthefirstpass causedbyinappropriategroove gap current speed etc defectsatbuttjoint 1 3 defectsatbuttjoint 2 3 defectsatbuttjoint 3 3 defectsatfilletjoint 1 2 defectsatfilletjoint 2 2 indownwardpassofweldingintheverticaldirection thethroatthicknessofthebeadtendstobecometoosmall ifweldingrodmotionisincorrect foulwelding notonlytoobroadbead butalsotoonarrowbeadisdoubtful treatmentofmal fabrication 1 2 shortageofsizeatfilletjoint tobeavoidedatthepartintension treatmentofmal fabrication 2 2 shortageofsizeatbuttjoint damageduetomisalignment bendingrigidity axialrigidity allowablelimitofmisalignmentis accordingtojsqs 1 3 importantmembers or1 2 others ofthethickness reconditioningofmisalignment crossjoint filletjoint buttjoint 4 blockinspection scopeofsurveyblockplanconfirmationofsteel see3 above confirmationofstructure accuracyandweldingothers scopeofsurvey thescopeofthesurveycoversblocksbelowtheuppermostcontinuousdeck blocksforsuperstructuresanddeckhousesonthefirsttierabovetheuppermostcontinuousdeck andotherblocksdeemednecessarybythesurveyor classnkinstructiona20 0144 5 therequirementsareprescribedforthesuperstructures deckhousesuptothethirdtierabovethefreeboarddeck freequotationfromrules partc chapter18 19 structure accuracyandwelding 1 2 confirmationofshape scantlingandmissingmembers shapeandscantling includingthickness ofmembersespeciallyprimarymemberssuchaswebframesandgirders missingmemberscollarplates carlings stiffeners smallbrackets etc ifabnormalitysuchasimbalanceofstructureanddiscontinuityofstrengtharefound eveniftheyareperdrawings surveyoristodiscusswiththeshipyardandhavethemcorrected iftheplatethicknessissmallerbeyondthenegativetolerance itshouldberegardedasanerror andcountermeasuresincludingreplacement