CSQS(中國造船質(zhì)量標準)英文版

NOTES

Theredocumentsareshipbuildingqualitystandardimplementedbyouryardpresently.TheyconsistoftwopartslikeQUALITYCONTROLTHROUGHPRODUCTIONandCONSTRUCTIONACCURACYTakenasamainbasisfortheshipbuildinginouryard,thisconstructionaccuracyismadeaccordingtotheshipbuildingqualitystandardinadvancedshipbuildingnations,internationalconventionsaswellasrulesandregulationsofsomewell-knownclassificationsocieties.Forthispurpose,werequire:

detailedworkmanshipanddrawings,ifnootherspecificrestriction,complywiththerespectiverequirementsstatedinthisSTANDARD.Incaseofdifference,thisSTANDARDshallgovernall.

shouldtherebesomeitemsinthenewbuildingcontractortechnicalspecificationofhigherrequirementthanthisSTANDARD,theseitemsshouldberegardedasanexceptionandperformedaccordingtospecificrequirementotherwiseannounced.

CONTENTS

PART1QUALITYCONTROLTHROUGHPRODUCTION

1STEELMATERIALANDPROCESSING………6

Steelmaterial……………………..6

Steelprocessing…………………...6

2FIXINGANDASSEMBLING……………………7

2.1Fixingandassemblingofpartsandmembers………………….…7

2.2Blockassembling…………………7

WELDING……………………….8

Preparationbeforewelding……………….………8

Weldingprocess………………….8

Weldinginspection……………….8

Keypointsofqualitycontrol……………………..9

4TIGHTNESSTEST………………..9

5FABRICATION,FIXING,TIGHTNESSTESTINGANDFLUSHINGOFPIPES………………10

5.1Fabricationofpipes………..…….10

5.2Fixingofpipesandfittings…………………….11

5.3Tightnesstestingofpipingsystem……………....12

5.4Flushingofpipes…………………12

6PAINTING………………...………13

6.1Pre-treatmentofsteelsurface……………………13

6.2Shopprimertouch-up………….....13

6.3Secondaryderustingandsurfacecleaning…………………...….13

6.4Paintingwork…………………..13

7HULLOUTFITTING……………13

7.1Pre-outfittingofshipequipment…………………13

7.2Approvalofshipequipment……………………...13

7.3Installationofshipequipment……………………14

7.4Keypointsofqualitycontrol…………………….14

8MACHINERYINSTALLATION……………….15

8.1Shaftingandpropeller…………..15

8.2Mainengineandaccessories……………………17

8.3Auxiliarymachinery…………….18

8.4Boiler……………19

9ELECTRICINSTALLATION………………….19

9.1Electricfittings………………….19

9.2Cablelaying……………………..20

9.3Installationandearthingofelectricequipment…………………20

9.4Connectionandearthingofmetalcoveringofcables…………..21

10AUTOMATICCONTROLANDREMOTECONTROL,TELEMETRYEQUIPMENTANDTHEIRTESTING……….…21

10.1Sensors………………………...21

10.2Automaticcontrolandremotecontrol…….…..22

10.3Monitoringandalarming………………….…..22

10.4Testofunattendedengineroom…………….…23

11MOORINGTESTANDSEATRIAL………..23

11.1Mooringtestandseatrialforhullpart………..23

11.2Mooringtestandseatrialformachinerypart…………….…...24

11.3Mooringtestandseatrialforelectricpart………………….…25

12COMPLETIONANDDELIVERY…………..25

12.1Deliveryofcabinequipment,sparesandsupplies……………25

12.2Inspectionofmarkingandoperationinstructions……………...25

12.3As-builtdrawingsandshipdeliverydocuments………………26

12.4Certificatestobehandedover…………………26

PART2PLANSFORAPPROVALANDINSPECITIONSANDTESTSFORACCEPTANCE

1PLANSFORAPPROVAL……………………..27

General……………………….27

Plansanddocumentstobesubmittedforreviewandapproval………………27

INSPECTIONSANDTESTSFORACCEPTANCE……..32

General……………………….32

Itemsofinspectionandtests………………….33

PART3CONSTRUCTIONACCURACY

1HULLCONSTRUCTION……………………34

Steelmaterials……………….34

Marking…………………….36

Cutting……………………….37

Forming……………………..39

Fixingandassembling………42

Welding……………………...49

Fairnessandfinishing……….51

Principaldimensionsanddeformation………56

Draughtandfreeboardmarks………………..57

2HULLOUTFITTING………..58

2.1Rudder………………………58

2.2Mast,deckcranepostandderrickboom……61

Cargoholdhatchcover………………..……63

Weathertightclosingdevices………………..73

cabinoutfitting………………80

MACHINERYINSTALLATION…………..83

Dieselmainengine……………83

Shafting………………………85

Auxiliarymachinery…………..86

Deckmachinery………………88

Installationofsteeringgearandfasteningliner………….…..89

Fabricationandinstallationofpiping………..89

ELECTRICINSTALLATION……………..98

Cablelaying…………………..98

Electricequipmentinstallation……………….100

PAINTING…………………….102

Pretreatmentofsteelsurface……………………102

Secondaryderusting…………….103

Surfacecleaning……………...…105

Qualityofcoating………………107

Filmthicknessofcoating……….108

PART1

QUALITYCONTROLTHROUGHPRODUCTION

1STEELMATERIALANDPROCESSING

Steelmaterial

Uponarrivalintheyard,allmarinesteelmaterialsaretobecheckedagainst

qualitycertificates.Visualinspectionistobedonetoconfirmtheirquality.

Allsteelmaterialsaretobestowedinpileaccordingtosizesandbrandand

keptflat.

Allsteelmaterialsshallbeservedoutagainstmaterialallocationsheet

accordingtotheproductionplan.

Visualinspectionistobedonetothesteelmaterialsbeforeprocessing.

Keypointsofqualitycontrol:

size,brand,heatnumber,batchnumber;

minustoleranceinthicknessforplatesandsections;

surfacequalities;

anydefectsinlargeforgingsandcastings.

Steelprocessing

Markingandcutting

Necessarypre-treatmentsuchaslevelling,straighteningandderustingareto

bedonetotheplatesandsectionsbeforecutting.

Numericalcontrolledcuttingandotherhighefficienthigh-precisioncutting

meansaretobeusedasfaraspossibletoimprovemarkingandcuttingaccuracy.

Materialproperty,heatnumber,batchnumberandthicknessaretobenoted

downforprimarymembersaccordingtotherequirement.

Keypointsofqualitycontrolformarking:

sizedeviation;

anglardeviation;

markingssuchasprocessingsymbols,codesandmarks.

Keypointsofqualitycontrolforcutting:

a)cuttingaccuracy;

dimensionalsize;

lamination.

Forming

Bending

Formingbycoldorhotbendingofsteelplatesandsectionsistobeperformedaccordingtothespecifiedrequirementsformaterialsofdifferentpropertiesandgrades.

Keypointsofqualitycontrol:

heatingtemperature;

accuracyofforming.

FIXINGANDASSEMBLING

Fixingandassemblingofpartsandmembers

Theaccuracyrequirementsofblockassemblingistobemetforthefixing

andassemblingofpartsandmembers.Shoppnmeristobeappliedafterwelding.

Keypointsofqualitycontrol:

geometricaldimensionsofpartsandmembers;

installationlocations;

deformation.

Blockassembling

Blockassemblingistobegenerallycarriedoutontheplatformorjig.

Pre-outfittingofpartsandmembersistobedoneaccordingtothedesign

drawings.

Theaccuracythatmeetstherequirementsofgeneralassemblingistobe

appliedforblockassembling.

Blockassembliesaretobepaintedafterinspection.

Keypointsofqualitycontrol:

markingaccuracy;

b)installationaccuracyofinternalstructurejointsinsidetheblock;

c)accuracyofblockconfigurationanditsdimensionalsize;

d)accuracyofblockedges;

e)correctnessofassemblingreferencelines;

f)levelnessoffaceplateandlocationdeviationofmainenginebed;

g)installationlocationsofkeycomponents,suchasshaftboss,rudderhorn,etc;

h)accuracyofjigmanufacturing

Erectiononshipway

Carryoutmarkingontheshipwaywithcorrespondingsymbolsandmarks.

Placethereferenceblockinposition,andthenproceedwithsuccessive

blocksaccordingtotheshipwayassemblingschedule.

Carryouterectiononshipway.

Duringconstructionprocess,alltemporaryopeningsintheprimarymembers

andtheirclosing-uparetocomplywiththerequirementssetoutinthetechnicaldocuments.

Removetemporaryweldingpiecesandliftingeyepiecesaccordingtousual

practice.

Aftercompletingshipwayassembling,thehullistobepaintedaccordingto

thespecifiedrequirements.

Keypointsofqualitycontrol:

accuracyofmarkingontheshipway;

correctnessoflocationofthereferenceblock

framespacingatblockjunctions;

alignmentaccuracyofstructuralmembers;

deflectionofthecenterlineofthekeel;

alignmentaccuracyofshaftcenterline;

markingaccuracyofloadlineanddraftmarks;

principaldimensionsofthehull.

WELDING

Preparationbeforewelding

Weldingmaterials,preparationofweldjointsandassemblingaccuracyareto

complywithrelevantrequirementssetoutinqualitycontroldocuments.

Theweldingzoneistobefreeofrust,scales,grease,moistureorotherdirty.

Theenvironmentalconditionoftheweldingareaistobekeptingoodorder.

Tackweldingistobecarriedoutaccordingtospecifiedtechnological

procedures.

Wherevernewmaterialsornewweldingtechnologiesareadopted,testreportsandweldingproceduresaretobesubmittedtotheclassificationsocietyforapproval.

Weldingprocess

Allweldingshallbecarriedoutaccordingtothemethodsandconditionsasrequiredbytheweldingtechnologyprocedures.Propermeasuresforminimizingweldingdeformationaretobetaken.

Weldinginspection

Inspectionofweldingistobecarriedoutthroughoutthewholeprocessof

weldingincludinginspectionsbefore,duringandafterweldingaswellastheinspectionoffinishedweldments.

Allweldsaretobevisuallyexaminedfirst.

Qualityinspectionofweldedseamsistobecarriedoutaccordingtothe

specifiedrequirements.EitherX-raydetection,ultrasonicdetectionorotherinspectionmethodsapprovedbytheclassificationsocietymaybeadopted.

Legsizesoffilletweldsaretocomplywiththedesignplanandrelevant

codes.

Weldedjointsonthestrengthdeck,shellplateandinteriorstrengthmembers

inthemid-lengthregionaretobeinspectedinaccordancewiththenon-destructiveinspectionplanapprovedbytheclassificationsociety.

Weldsnotconformingtotherequirementsofqualitystandardsaretobe

rectifiedandrepairedasrequired,andaretobeinspectedagain.

keypointsofqualitycontrol

qualificationofwelders;

weldingmaterials;

weldingcodes;

groovesizesandseamclearance;

cleannessofweldingregion;

preheatingandheat-retaining;

weldingdeformation;

sizesofweldedseams;

integrityofall-aroundwelds;

surfaceandinnerdefectsinweldingseam.

TIGHTNESSTEST

Tightnesstestistobeconductedaftermainhullandthestructuretobetestedarecompleted,allaccessoriesaffectingthetightnessarefixedandnon-destructivetestingareproperlycompleted.

Allweldingseamshavingconcernwithtightnesstestaretobefreeofscales,slugs,paints(excludingprimers)oranygrease.

Tightnesstesttothehullstructuremaybeperformedwitheitherhosetest,hydraulictest,airtestorotherequivalentmethodsdependinguponthehullstrengthandtightnessrequirement.

Tightnesstestmaybeperformedonblocks.

Thelocationandrequirementsfortightnesstestaretobeincompliancewiththerequirementsoftheclassificationsociety.

Keypointsofqualitycontrol:

cleaningofweldedseams;

testpressure;

testprocedure;

testduration;

inspectionfordeformationandleakage.

FABRICATION,FIXING,TIGHTNESSTESTINGANDFLUSHINGOFPIPES

Fabricationofpipes

Materialofpipes

Uponarrivalintheyard,visualinspectionistobeconductedtothepipes

againsttechnicaldocuments.Thepipesaretobeproperlystowedseparatelyaccordingtotheirmaterialquality,heatnumber,batchnumber,gradeandsize.

Keypointsofqualitycontrol:

certificateofqualification;

sizeandvisualappearance;

separatestowing.

Blankingofpipes

Beforeblanking,checkistobemadetothepipesize,grade,materialquality,

heatnumberandbatchnumber.Afterblankingandtemporarysealing,thepipesectionsaretobeproperlynumberedandstowedinaccordancewithtechnicaldocument.

Keypointsofqualitycontrol:

sizeandvisualappearance;

blankinglengthandserialnumber;

stowingandmaintenance.

Bendingofpipes

Eithercoldbendingorhotbendingmaybeusedforpipebending.Incaseof

coldbending,thebendingradiusofthecurvatureofthepipeistobeingeneralnotlessthanthreetimestheoutsidediameterofthepipe.Forspecialpipessuchastankheatingpipeandpipestobefixedinconfinedspace,theradiusofcurvatureistobeingeneralnotlessthantwotimestheoutsidediameterofthepipe.Whenpre-fabricatedbendisadopted,thebendingradiusofthecurvatureistobenotlessthantheoutsidediameterofthepipe.

Keypointsofqualitycontrol:

circularityofthepipebend;

heightofbendingcorrugationofthepipebend;

mechanicaldamageordefect;

bendangle,rotatingangleandlengthofpipesegmentafterbending.

Fixingofpipes

Thematerial,sizeandtypeofpipefittingsaretobeincompliancewiththe

requirementsofthetechnicaldocuments.Thematingclearanceorgrooveofthepipewithitsconnector,ofthebrancheswithmainpipeandbetweenconnectionbuttsofpipesaretobeinconformitywiththerelevanttechnicalrequirements.

Keypointsofqualitycontrol:

marksofpipe;

correctuseofconnector;

matingclearanceandgroove;

assemblingdimensions;

positionwelding.

Weldingofpopes

Theweldershallholdproperqualificationcertificateforconductingwelding.

Measuresaretobetakentoavoiddeformationoftheweldingforlargediameterpipe.Weldingistobecarriedoutinaccordancewiththerequirementsoftheweldingprocedures.

Keypointsofqualitycontrol:

cleaningofweldedparts;

weldingmaterial;

weldingdeformation;

weldingquality.

Pipecleaningandstrengthtesting

Thepipesaretomaintainsmoothsurfaceaftermachiningandwelding,and

aresubjecttohydraulictestinaccordancewiththerequirementsofthetechnicaldocuments.

Keypointsofqualitycontrol:

noweldingslag,spray,sharpcutnorburronthesurface;

strengthtest;

sealblockingofpipeends.

Surfacetreatmentofpipes

Aftermachining,pipesurfaceistobetreatedinaccordancewiththe

requirementsofthetechnicaldocuments.Pipeswithdifferentsurfacetreatmentshallbesegregatedandstowedseparately.

Keypointsofqualitycontrol:

cleaningandprotectionofpipes;

qualityofgalvanizingandpainting;

stowingofpipesaftersurfacetreatment.

Fixingofpipesandfittings

Handlingofpipes

Pipestobeinstalledaretobecountedandservedoutinaccordancewiththe

technicaldocuments.

Keypointsofqualitycontrol:

protectionofnon-ferrousandspeciallytreatedpipes;

preventionofimpactorsqueezing;

preventionofsandordirtfromenteringthepipe.

Fixingofpipes

Pipes,ingeneral,aretobefixedinstagesofunitassembling,block

assembling,overallassemblingandfixingonboard.

Keypointsofqualitycontrol:

fixingsequenceandaccuracyofcoordinatedimensions;

cleaningofpipeendmatingsurfaceandremovalofforeignmattersinsidethepipe;

sizeandmaterialqualityofpipeconnectionbolt;

sealingmaterialforpipeconnection;

connectingaccuracyofpipetoequipment.

Fixingofpipefittingsandsupports

Thefixingofpipefittingsandsupportsistobeincompliancewiththe

requirementsoftheclassificationsociety.

Keypointsofqualitycontrol:

type,size,positionandflowdirectionofpipefittings;

visualqualityoffittings;

connectingaccuracyofpipetotheequipment;

supportingtypeandspacingofsupports;

weldingofsupport;

gasketbetweennon-ferrouspipeandsupport.

Tightnesstestingofpipingsystem

Tightnesstestofthepipingsystemistobecarriedoutinaccordancewiththe

technicaldocuments.

Keypointsofqualitycontrol:

completenessandaccuracyofpipefixing;

testingmedium;

testingmethod;

tightness.

Flushingofpipes

Flushingofthepipingsystemsistobecarriedoutinaccordancewiththe

requirementsofthetechnicaldocuments.

Keypointsofqualitycontrol:

flushingmedium;

flushingmethod;

cleanness.

PAINTING

Pre-treatmentofsteelsurface

Surfacepre-treatmentofsteelsintobedoneingeneralbymeansof

shot-blasting,abrasiveblastingandchemicalcleaning.Shopprimeristobecoatedafterderusting.

Surfacepre-treatmentistobedonetothequalitystandardlistedintable

3-5-1ofthisstandard.

Shopprimeristobeappliedtothequalitystandardstatedintable3-5-2of

thisstandard.

Shopprimertouch-up

Anydamagedshopprimeristobedulytouchedupduringprocessing,assemblingandwelding.

Secondaryderustingandsurfacecleaning

Secondaryderustingandsurfacecleaningaretobedonetothequalitystandardstatedintable3-5-3andtable3-5-4ofthisstandard.

Paintingwork

Pre-painting

Pre-paintingistobedoneforthespotsandareasthatcannotbeeasilyaccessedordifficulttoreachtherequiredfilmthicknessbyspraying.

Painting

Paintingmaybedonebymeansofeitherairlesssprayingorrollerapplication,etc.

Keypointsofqualitycontrol:

environmentalconditionsaffectingpaintingoperation;

appearanceofcoat;

wetfilmthicknessordryfilmthickness;

filmthicknessallocation.

HULLOUTFITTING

Pre-outfittingofshipequipment

Pre-outfittingistobecarriedoutasextensiveaspracticallypossibledepending

upontheconditionsofcontruction.

Approvalofshipequipment

Allshipequipmentsuchashatchcovers,closingappliancesforwindowsand

doors,air-conditioningsystem,fire-fightingsystemaretohavethemarineproductcertificatesissuedbytheclassificationsociety,productqualificationandtestreports.

Installationofshipequipment

Allshipequipmentaretobecompletelyandcorrectlyinstalled.

Keypointsofqualitycontrol:

Steeringequipment

machiningaccuracyofallfittingfaces;

machiningaccuracyandmatinggapsforrudderstock,rudderplate,tiller,ruddercarrier,rudderpintleandliner;

locationdeviationsofvariouscenterlinesofruddersystem;

correctzeropositionofrudderblade;

installationprecisionofthesteeringgear.

Anchoringequipment

installationprecisionofthewindlass;

smoothengagementofanchorchainswithchainwheel;

brakingabilityofchainstopper;

matingofanchortoanchorlips.

Mooringequipment

precisionofinstallation;

easeofoperation

Lifeboatdavits

strengthofboatdavits;

nopartofboatextrudingoverboard;

clearobservationofboat-loweringandhoistingfromtheboathandlingstation;

distancebetweenboatandsideshellwhenlowering;smoothnessofboatlowering;

simultaneousde-hookingwhentheboatisafloat;

correctinstallationofboatwinchesandaccessories.

Accommodationladder

strengthofladder;

easyandreliablelowering,hoistingandturningover.

Cargogear

fabricationaccuracyofderricksandderrickpost;

levelnessandflatnessofderrickpostflangesandcraneseat;

Precisionofcargowinchinstallation;

brakingreliability;

loadingtestofcargogear.

Cargoholdhatchcoversandhatchcoamings

accuracyofsizesandshapes;installationaccuracyofwater-tightrubbersealsandtheirchannels;

precisionofpositionlimiting;

fitnessbetweensecuringwedgesandwedgeseats;

flatnessoffaceplatesonhatchcoaming;differencebetweendiagonalsofhatch;

locationofbattensonhatchcoaming;

water-tightnessofhatchcovers;

easyhandling.

Steelweather-tightclosingappliances

visualqualityafterwelding;

tightness.

Air-conditioningsystem

installationintegrityandcorrectnessofequipment,ductsandfittings;

smoothnessandtightnessofducts;

runningtesttoprovenormaloperation;

effectofair-conditioning.

Fire-fightingsystem

installationintegrityandcorrectnessofequipment,pipingandfittings;

tightnessofpiping;

correctfunctionandeffectivenessofCO2orfoamsystem;

correctfunctioningoffire-detectionandalarmsystem;

releasinginterlockingfunction.

MACHINERYINSTALLATION

Shaftingandpropeller

Machiningandassemblingofshafting

Thematerialsofintermediateshaft,tailshaftandconnectionboltaretobein

compliancewiththerequirementsoftheclassificationsocietyandwiththequalificationcertificate.

Theconeendofthetailshaftistobemachinedagainstthetemplet.

Forkey-fixingpropeller,thegrind-fittingofthekeywithshaftandpropeller

keywaysistobecarriedoutatthesametimeofthegrind-fittingofthepropellerbossandshaft.

Aftermachining,thereamedbolthoieoftheconnectionflangeistobe

matchedwiththereamedboltbycoldorhydraulicpressingforinterfacechecking.

Theintermediateshaftistobeassembledbygrind-fittingtotheintermediate

bearing.

Thepropelleristobeassembledbygrind-fittingtothepropellershaft.The

matingpositionofthepropellerandshaftistobemarked.

Keypointsofqualitycontrol:

toleranceoftempletfortailshaftconepartmachiningandamountofdeformation;

accuracyofreamedholeofconnectionflangeandcenteringdeviationofflange;

contactpointandclearanceofgrind-fittingbearingbush;

contactpointandfixingtightnessofgrind-fittingkeywithshaftandpropellerkeyways;

contactpointandfixingtightnessandassemblingtemperatureofgrind-fittingbossofkeylesspropellerwithshaft;

tightnesstest.

Centeringandpositionfixingofshafting

Thecenteringoftheshaftingistobedoneingeneralbyusingthewayof

opticalsightorrunningaline.Theopticalinstrumentusedistobeaccurateandingoodconditionandsuchcenteringistobecarriedoutatthetimewithoutdirectsunshine.

Beforeconductionshaftingcentering,allhullconstructionbehindengine

roomforebulkheadandbelowmaindeckorcontinuousstrengthdeckaretobecompleted.Thesterntubeistobecentered,fixedandweldedtocompletionbasedonship’scenterlinedulysurveyedandqualified.

Duringtheprocessofshaftingcentering,anyworkthatmaycausesever

vibrationandliftingoperationofheavypiecearetobeforbidden.

Aftercentering,checktheverticaldistanceoftheshaftingcentertotheface

plateofthefoundationofmainengineandtothefaceplateofbeddingsupportofintermediatebearing,thedeviationatforeandaftandthemachiningtoleranceofthesternbossaretobechecked.

Referencepositionforboringistobedefined.

Keypointsofqualitycontrol:

deviationofcenterofbossatforeandaftends;

deviationofshaftingcenterlinefromtherudderstockcenterline.

Boringofsterntubeandmachiningofsternbush

Thedeviationofthecenteroftheboringbarfromtheshaftingcenteristobe

keptwithinthespecifiedrange.

Aftercompletingboringofsterntube,thedeviationofitscenterlinefromthe

foreandaftreferencecenterpointsistoberechecked.’

Theexternalcircleofsternbushistobemachinedinaccordancewiththe

actualsizeofthebushafterboring.

Keypointsofqualitycontrol:

flexibilityofboringbar;

roundness,cylindricityandcoaxialityofforeandaftsternbearingholes;

perpendicularityofendfaceofsterntubetothecenterline;

fixinginterferenceofsterntubewithsternbush;

positionmarkofsterntube;

surfaceroughnessofsternbush.

Shaftinginstallationonshipway

Thesterntubeistobenormallyassembledandmountedwithhydraulic

pressing.Beforepressing-in,thedimensionsofmatingpartsofsterntubeandbusharetobecheckedunderthesametemperature.Duringthepressing-inprocess,thepressing-inforceistobeincompliancewiththerequirementsoftechnicaldocument.

Keypointsofqualitycontrol:

accuracyofpositioningofsternbushintotheboss;

temperatureofsterntubeandsternbush;

variationofbearinginternaldiameterafterpressing-inandsurfacequalityofbabbitmetal;

pressing-inforce.

Beforeassemblingthetailshaft,thecompletenessofsternsealingdeviceand

correctassemblingofthetemperaturesensorandconductoraretobechecker.

Keypointsofqualitycontrol:

Clearancesofbothforeandaftbearings.

Thepropelleristobemountedbyhydraulicpressing.Afterpropeller

mounting,theinitialdataofsubsidenceofthetailshaftsealingdevicesistobemeasuredandmarked.

Keypointsofqualitycontrol:

temperatureoftailshaftandpropeller;

initialpressingforce,pressed-inamountandpressure;

assemblingtightnessofpropellercap;

gravityoilfillingtestfortailshaftsealingdevice.

Alignmentandinstallationofshafting

Shaftingalignmentistobecarriedoutwithmainengine,shaftingand

accessoriesalllocated,withingeneralotherlargemachinesandequipmentinengineroomallproperlypositioned,andaftertheshipislaunched.

Theassemblingdimensionsoftheshaftingaretobeadjustedfromaftend

forewardaccordingtotheresultsofshaftingalignmentcalculation,andthepositionofintermediateshaftandmainenginearetobedecided.

Thegroundedlinersandreamerboltsaretobeassembledandtightly

fastened.

Afterfinishingoftheshaftinginstallation,loadre-checkingforthe

intermediatebearingistobecarriedoutinaccordancewiththeloadsspecifiedinshaftingalignmentcalculation.

Keypointsofqualitycontrol:

deflectionandoffsetofflangeofeachshaft;

contactpointofgrind-fittingliner;

surfaceroughnessandmatingaccuracyofreamerbolt;

clearancebetweenmatingsurfaceafterinstallingandfastening;

loadofintermediateshaft.

Mainengineandaccessories

Requirementstobefollowedformainenginepositioning

Positionofboltholesinthemainenginefoundationalongthelongitudinal

directionaretobedecidedandmachined.

Theweldinglinersonfaceplateofmainenginefoundationarelocatedand

welded,orresinchockisbonded.

Mainengineistobeassembledinaccordancewiththetechnical

specification.Crankwebdeflectionistobemeasured.

Positioningofmainengine

Themainengineistobepositionedwithreferencetothesh