Tank+cleaning货舱清洗课件

WhatisTankCleaning

什么是洗舱Revised1stMar20051COMGroup,TMWhatisTankCleaning

什么是洗舱ReCompanyObjectivesofTankCleaningDeliver“CleanonboardCargoes”andprovideprofessionalservicestomeetcustomers’requirements.ContinuouslyimproveourTankCleaningprocessestoincreaseefficiencyandcustomersatisfaction.Ensurethatresourcesandtrainingarereviewedtomeetcustomers’requirements.Asacompany,wearecommittedtocontinuousimprovementinthequalityofallourservicesandoperations.Wearealsocommittedtocontinuousimprovementandenhancementofourrelationshipswithcustomers,shareholders,employeesandpartners.Compliancewithsafety,healthandenvironmentallegislationandregulationscontinuouslyimprovingthesafetyandhealthpreventingpollution;systematicallyidentifyingrisksfromouractivitieswhetherarisingfromfacilities,equipmentorpeople;controllingidentifiedrisksbyensuringthatappropriateresourcesareavailableforbothplanningandoperations;Revised1stDec20042COMGroup,TMCompanyObjectivesofTankCleTankCleaningEquipments相关洗舱设备Revised1stDec20043COMGroup,TMTankCleaningEquipments相关洗舱设备TankCleaningMachineTherearetwo(2)typesofgreasetypeandnon-greasetypewhichcanbefoundfrommaker‘sinstructionbook.Chemicaltankersgenerallyusenon-greasetype.Knowingwatercapacity&cycletimeoftankcleaningmachineagainstthewaterpressureisveryusefultocarryouteffectivetankcleaning.有两种洗舱设备。知道水的容量，洗舱设备循环时间，以及水压力是非常有用的ThisisasampleofT/CmachinewhichisusedforchemicaltankersofDWT10,000foryourguidance.Lowwaterpressureisusedforvolatilecargo,orpreventingdamageofcoatingincaseofaggressivecargo.低水压用于易挥发货物，或者在装了对涂层有刺激货物后为了保护涂层。Highwaterpressureisusedfornon-volatilecargo,highviscositycargoorvegetable&animaloil.高水压用于不挥发货物，高粘度货物或者植物油，动物油。

120ºUP180ºDN270ºUP360ºRevised1stDec20044COMGroup,TMTankCleaningMachineTherearTankCleaningHeater

洗舱加热器

Ithastobemaintainedwellandtoconductcleaningoftheheaterbychemicalcleanerevery6monthssoastogetgoodtemperatureduringtankcleaning.每六个月使用化学清洗剂清洗，进行维护，从而保证洗舱达到理想的温度Revised1stDec20045COMGroup,TMTankCleaningHeater

洗舱加热器ItFactorstobeconsideredfortankcleaning洗舱时应考虑的因素Revised1stDec20046COMGroup,TMFactorstobeconsideredfortPropertyofCargo

a)Aggressivecargo(MEK,Methanol)

刺激性货物（丁酮，甲醇等） Suchcargomakescoatingofcargotanksoftenanddamaged.Beforetankcleaning,Itisrequiredtotakecuringtimebyventilationuntiltankcoatingrecoveredtotheoriginalcondition.Lowwaterpressureoflessthan6kg/cm2shouldbeappliedduringbutterworthing.

该货物使涂层软化以及遭到损坏，在洗舱前，需要通风使涂层愈合，在洗舱时水压小于6公斤/平方厘米b)Viscosityofcargo(Lubadd,OLOA270

)

高粘度货物 Viscosityistheinternalresistancecreatedinfluidssuchaswater,oilandgaswhenthesematerialsflow.Strengthorrateofviscosityis,inprinciple,shownas(mPa.s)at20C.Viscosityisaffectedbytemperatureand/orpressure.Viscosityofliquiddecreasesastemperaturerises.液体的粘度随着温度的升高而减少。 Thereforehighertemperatureandhighpressureofwashingmachinecanmakeiteasytoremovecargoresidueincargotank.SuchcargotanksarerequiredtodotankcleaningbyhightemperatureandsettingT/Cmachineswithalotofstepaccordingtotheheightofcargotank.提高水温以及压力来除去残余货物Revised1stDec20047COMGroup,TMPropertyofCargoa)AggressivPropertyofCargoc)Solidityofcargo(FattyAlcohol,PalmOil)易凝结（固化）物质Everycargohasitsmeltingpointwhichisthetemperaturethattheabsorptionofheatenergycausesthemoleculestomovemorefreely,breakingupthesolidstructure.Onthecontrary,freezingpointisthetemperatureatwhichcrystallizationbegins.Thetemperatureoftankcleaningwaterdependsonmeltingpointofcargo.SuchcargotanksarerequiredtodotankcleaningbyhightemperatureandsettingT/Cmachineswithalotofstepaccordingtotheheightofcargotank每种货物都有相应的溶点（凝固点），提高水温，根据货舱高度来采取多步骤。d)Corrosive(AceticAcid,CausticSoda)

腐蚀性（冰醋酸，液碱）Liquidswhichcorrodenormalconstructionalmaterialssuchassteel&coatingatanexcessiverate.ThosecargotanksarerequiredtodoT/Cbyabundantwaterimmediatelyassoonascompletionunloadingcargo.TheT/Cwatershouldbedischargeddirectlyintoseathroughflexiblehoseorpipelineinordertoavoiddamagetocoating.Sloppingtoothercargotankisnotrecommended.完货后立即需要使用大量的水清洗，直接通过软管或者管线排入海中，不建议将洗舱污水放在别的货仓中。Revised1stDec20048COMGroup,TMPropertyofCargoc)SolidityoPropertyofCargoe)Vaporpressure(Methanol,Acetone)蒸气压（甲醇，丙酮） Thepressureexertedbythevaporabovetheliquidatagiventemperature.Itisexpressedasabsolutepressure.ThecargowithhighvaporpressurecanbedoneT/Cbysimplemethodonlyonestepofmachinebecausethereisnoresidueonthewallbutonlybottomandshortesttimewhichcanremoveresidueremainedonbottom.在液体表面上蒸气产生的压力。使用压力表示。高蒸气压的货物可以仅仅使用非常简单方式和少量的步骤来进行洗舱，因为舱壁没有残留物，仅仅在舱底才有残留物，使用最少的时间就可以将残留物除去。 DuringtheinitialstagesofT/C,lowtemperatureoftankcleaningwaterisrequiredinordertoavoidexplosionbyflammablevapor.Cargoresiduesofsubstanceswithavaporpressuregreaterthan5kpa(equaledto37.5mmMg)at20Cmayberemovedfromacargotankbyventilation.在洗舱初期，必须使用低温水洗舱，避免可燃蒸气爆炸。在20度时当残留物的物质的蒸气压力大于5KPa(等于37.5mmMg),可以仅用通风来除去残留物。Revised1stDec20049COMGroup,TMPropertyofCargoe)VaporpresPropertyofCargof)

Staticelectricity(Benzene)

静电（苯）Cleanoilsare,ingeneral,accumulatorsofstaticelectricitybecauseoftheirlowconductivityanditisrequiredfollowingprecautionsbefore/during/aftertankcleaninginordertoavoidexplosion:通常来说，清油由于不导电的特征从而使其容易聚集电荷，在洗舱中需要下列步骤来避免爆炸。·

Beforewashing,thetankbottomshouldbeflushedwithwaterandstripped.在洗舱前，舱底必须加水冲洗，并且泵出。·

Beforewashing,thetankshouldbeventilatedtoreducethegasconcentrationofthe atmosphereto10%orlessofthelowerflammablelimit.在洗舱前，舱内必须通风，致使气体浓度在10%以下或者爆炸极限下限。·

Ifportablewashingmachinesareused,allhoseconnectionsshouldbemadeupandtestedfor electricalcontinuitybeforethewashingmachineisintroducedintothetank.如果使用移动洗舱机，所有管线应该系牢，并且接地，对导电性进行测试，之后才能开始洗舱。·

Connectionsshouldnotbebrokenuntilafterthemachinehasbeenremovedfromthetank，在整个机器完全移出货舱后才能将给连接口拆开。·

Todrainthehoseacouplingmaybepartiallyopenedandthenre-tightenedbeforethe machineisremoved

，为了滤干管线接头，·

Re-circulatedwashwatershouldnotbeusedfortankcleaning·

Steamshouldnotbeinjectedintothetank

蒸气不允许进入舱内·

Washwaterdoesnotexceed60C

洗舱水不允许超过60度·

Thetotalwaterthroughputpercargotankshouldbekeptaslowaspracticableandmustinno caseexceed180m3/h

各舱进水速度要保持尽量低速，不能超过180立方/小时Equipmentshouldbebondedandsecurelyearthedtotheshipbeforeintroductionintothetankandremainsoeartheduntilremoved设备必须绑扎住并且在进入货舱前接地，直到移开设备。Revised1stDec200410COMGroup,TMPropertyofCargof)

StatiPropertyofCargog)

Solubilityinwater(MEG,IPA,Acetone,Methanol,)水溶性物质Thecargowhichiscompletelysolubleinwaterisveryeasytoremovetheresidueincargotankbyonlywash-waterwithoutusinganydetergentorchemicalsolvent.Solubilityinwaterofsomecargodependsontemperature.Phenoliscompletelysolubleinwaterat66C.此类货物能够完全融于水，可以不加清洁剂或化学溶剂而仅用水就可以除去残留物。但有些货物的可溶性是和水温有关系，苯酚在66度时完全溶于水。h)

Dryoil(Fishoil,Linseedoil,Saffloweroil,Soyabeanoiletc.,)干油类Itistheoilexceeding130iniodinevalue.T/CofDrycargotankhastobedoneassoonascompletionunloadingcargo.IfnotavailabletodoT/Cimmediately,pre-washisrequired.T/Cofsuchcargohastousehighpressuredcoldwaterwithalotofstepofmachineinordertoavoidcargoresiduesincargotanktobecomesticky.Suchcargocannotcompletelyremoveresiduesincargotankbyonlypre-washingbutrequiredtousedetergentorchemicalsolvent.Sloppingtoothercargotankisnotrecommended.(Nondryingoil<IV100,Semidrying=IV100-130)

含碘值大于130的油类，在卸完货后立即进行洗舱。如果无法立即洗舱，必须进行预洗。洗舱必须使用高压冷水采取多种步骤进行，从而防止残留物粘在舱壁上。如果仅仅预洗的话是无法出去残留物，而必须要加入洗涤剂和化学溶剂。不建议将洗舱水放在另外的货仓中。Revised1stDec200411COMGroup,TMPropertyofCargog)

SolubilityPropertyofCargoi)

Reaction(SM,MMA)

化学反应（苯乙烯，甲基丙烯酸甲酯）ThetendencyofachemicaltoreactwithitselforwithotheroutsideinfluencesuchasOxygenorheat,usuallyresultinginpolymerizationordecompositionwherebythemoleculesofacompoundcanbemadetolinktogetherintoalargerunitcontaininganythingfromtwotothousandsofmolecules.

这类货有自己反应或和外界物质，比如空气，热量等进行反应的趋势，通常会因为两个或成千上万个分子之间联结成为大的物质从而导致聚合或分解 T/Cofreactioncargotankhastobedoneassoonascompletionunloadingcargo.IfnotavailabletodoT/Cimmediately,pre-washisrequired.T/Cofsuchcargohastousehighpressuredcoldwaterwithalotofstepofmachineinordertoavoidbeingpolymerized.这类货必须在完货后立即进行洗舱。如果无法洗舱，则必须进行预洗。洗舱时要使用高压冷水采取多种步骤来洗舱，从而避免聚合。Revised1stDec200412COMGroup,TMPropertyofCargoi)

Reaction(PropertyofCargoj)

Smell(2-EH,DINP,Octanol)

气味（辛醇，Dinp) Thosecargoesremainstrongsmellincargotankforalongtime.Machinewashbycoldwaterfirstandthenwarmandhotwater,detergent,steamingandfanning(repeatedly)arerequired.这类货长时间保留非常强烈的气味。用热水，洗涤剂，蒸气和风扇进行洗舱。Revised1stDec200413COMGroup,TMPropertyofCargoj)

Smell(2-EHChemicalReaction（货物相容表）.Revised1stDec200414COMGroup,TMChemicalReaction（货物相容表）.ReviWhatisStaticElectricity?Everythingweseeismadeupoftinylittlepartscalledatoms.Theatomsaremadeofevensmallerparts.Thesearecalledprotons质子,electrons电子

andneutrons中子.Theyareverydifferentfromeachotherinmanyways.Onewaytheyaredifferentistheir"charge."Protonshaveapositive(+)charge.Electronshaveanegative(-)charge.Neutronshavenocharge.Usually,atomshavethesamenumberofelectronsandprotons.Thentheatomhasnocharge,itis"neutral."Butifyourubthingstogether,electronscanmovefromoneatomtoanother.Someatomsgetextraelectrons.Theyhaveanegativecharge.Otheratomsloseelectrons.Theyhaveapositivecharge.Whenchargesareseparatedlikethis,itiscalledstaticelectricity.Iftwothingshavedifferentcharges,theyattract,orpulltowardseachother.Iftwothingshavethesamecharge,theyrepel,orpushawayfromeachother.StaticElectricitycausesFIRE

静电导致火灾.StaticElectricity

静电Revised1stDec200415COMGroup,TMStaticElectricity静电Revised1Surroundingcargotanks

周围的货舱

WhenmakingaT/Cplan,surroundingcargotanksshouldbetakenintoconsideration.Somecargoescanbeaffectedbyhightemperatureofhotwaterbutterworthingorsteaming.DonotstartT/Cuntilthecargohasbeenfullydischarged.Iftherewerealotofemptycargotankstobecleaned,placethepriorityonthepolymerizingcargoordrycargotanks.当洗舱的时候必须要考虑周围的货舱。有些货容易被隔壁的货舱热水洗舱产生的高温而受到反应。这种情况下，必须要隔壁的舱卸完货后在进行洗舱。如果有很多舱需要清洗，易聚合的物质或干货舱优先进行清洗。Revised1stDec200416COMGroup,TMSurroundingcargotanks周围的货舱 Typeofcoating(Epoxy/Zinc/SUS)涂层的种类Zinccoatingtank镀锌涂层

isnotaggressiveagainstchemicalcargoandcaneasilyremoveresidue&smellincargotankcomparingwithEpoxycoatingtank.TheeasiesttankcoatingtodotankcleaningisSUSwhichdoesnottakemuchtankcleaningtimecomparedwithotherEpoxyorZinccoatedtank.

和环氧涂层相比，镀锌涂层更加不受化学品的影响，更加容易清洗。最容易清洗的涂层是不锈钢。

WithintheTMFleet,mostofthevesselsareequippedwithSUS316stainlesssteel.SUS316alloywithlowCcontent.Resistanttointer-granularcorrosionandGrade316alsohasexcellentcorrosionresistanceinawiderangeofChemicals.EpoxyStainlessSteelZincRevised1stDec200417COMGroup,TMTypeofcoating(Epoxy/Zinc/SUROUGING（铁红粉）-ADISCOLORATIONOF

STAINLESSSTEELSURFACESRougingisathinfilm,usuallyreddish-brownorgoldenincolor,ofironoxideorhydroxide,typicallyonstainlesssteels.Thecontrastbetweenthisfilmandshinymetalaccentuatesthisaestheticsproblem.Therougefilmtypicallywipesoffeasilywithalightcloth(Figure1),butitreformswhiletheprocessfluidisincontactwiththestainlesssteel.Asstated,rougeisferricoxide(i.e.,rust)三氧化二铁（也就是铁锈）,butthefilmmaycontainnotonlyironbutalsochromiumandnickelcompoundsinvariousforms,andhencethefilmmayvaryincolorandtenacity(Figure2).Stainlesssteelis"stainless"owingtothefactthatthealloyformsathin,protective,tenacious,transparentoxidefilmthatprotectsitagainstdestructivecorrosivespeciesinaqueoussolutions.Thisfilmiscomposedofchromiumoxide,andissaidtomakethesteel"passive"againstcorrosion.Theexactnatureofthisfilmisacontinuingsubjectofdebate,andinfactitsexactstructureandnaturemayvary,dependingonanumberofvariables.Figure1.-Rougewipeseasilyoffthestainlesssteelsubstrate,butwillreform

Figure2.-Rougingcomesinmanycolorsdegreesoftenacity.Revised1stDec200418COMGroup,TMROUGING（铁红粉）-ADISCOLORATIONPittingofStainlessSteelAnotherprocess,whichismoredamaging,isthecreationandpropagationofpits.Non-metallicinclusions,suchassulfides,oxides,etc.,areaninherentresultofalloyproduction.Theyaredispersedthroughoutthemetalandarehighlysusceptibletoattackbyaggressiveenvironments.另外的一个过程，更加严重的损坏，就是凹点的产生和扩大。合金里面包含了非金属物质，比如硫化物，氧化物等，这是合金固有的性质。他们散布在整个金属中，并且受到刺激的环境的影响。Typicallytheseinclusionsaredissolvedinaparticularsolutionorenvironmentandleaveamicro-voidbehind.Thisvoidbecomesanoccludedcellwheresolutionchemistrycanbedifferentfromthebulksolution.通常这些包含物在特定的方式或环境下溶解掉，留下微小的空洞。Ifthestainlesssteeldoesnotreadilyre-passivate,thencorrosionattackwithinthevoidcanpropagate.Thecorrosionproductswithinthenowformedpitspilloutontothebulkmetalsurfaceproducinglocalizedrougingorrustblooms(Figure3).Afterapitinitiates,propagationofthepitmayoccurandprogressesuntilathrough-wallpenetrationoccurs.Alternately,ifthepitheals,theactivityceasesandnopropagationoccurs.

Figure3.-Rougeorrustbloomsidentifypitsites.Revised1stDec200419COMGroup,TMPittingofStainlessSteelAnotPassivationofStainlessSteelWhatispassivation?钝化AccordingtoASTMA380,passivationis"theremovalofexogenousironorironcompoundsfromthesurfaceofstainlesssteelbymeansofachemicaldissolution,mosttypicallybyatreatmentwithanacidsolutionthatwillremovethesurfacecontamination,butwillnotsignificantlyaffectthestainlesssteelitself."Inaddition,italsodescribespassivationas"thechemicaltreatmentofstainlesssteelwithamildoxidant,suchasanitricacidsolution,forthepurposeofenhancingthespontaneousformationoftheprotectivepassivefilm."Itisalsoknownthatthetheprotectivepassivefilmformsveryrapidlyinmostenvironmentsthatarenotactivelyreducing.Exposuretomoistairwillprovidethispassivationwithinamatterofminutes,andthefilmwillthickenwithtime.ProcedureforPassivation:钝化方式1)NitricAcid20%withFreshWatersolution,circulationbutterworth,3hrs.(3butterworthmachines,3steps)20%硝酸溶剂，循环冲洗，3小时（3个机器，3个步骤）2)Freshwaterbutterworth,30min.

淡水冲洗，30分钟。3)Dryingthetanks,5hrs.

使货舱干燥，5小时。Revised1stDec200420COMGroup,TMPassivationofStainlessSteelPassivation1.Precleaningbyseaorfreshwaterdependsoncurrentcargoes.2.Freshwaterwashingforthetankswashedbyseawaterandallseawaterdrainintanksmustbepumpedoutbeforemakingsolution.3.Picklingby30%nitricsolution3hrskeepmaximumtrimandlisttomakegoodstrippingadvantage.4.Keep3hrsforpassivation5.Freshwaterrinsingtilltheacidityistobe7atmanifold6.Wait1or2hrsbeforesteaming7.Steaming2-3hrs8.Dryingandmopping.Howtomakesolution?:Notes1.trytopassivationasmanyaspossiblebyonesolution2.leavetwotankswhichwereloadedphosphoricacidpreviouslytomakecompareinthefuture.3.takeapicturebeforeandafterpassivationbutitmustbesamelocation.4.keeprecordallhappeningswhilepassivation5.passivationtankbytankisrecommended.7.keeptheenoughstockoffreshwater.Revised1stDec200421COMGroup,TMPassivation1.PrecleaningbyHowtodilution如何稀释

Ex)When3000Litersof30%solutionismadeusingby60%concentrationofNitricAcid.Athere,“A”standsfor60%Nitricacid,and“B”standsforFreshwater.Then,1500LofFreshwaterand1500Lof60%ofNitricAcidwillmake3000Lsolutionof30%Revised1stDec200422COMGroup,TMHowtodilution如何稀释

Ex)When3BeforepassivationRevised1stDec200423COMGroup,TMBeforepassivationRevised1stAfterpassivationRevised1stDec200424COMGroup,TMAfterpassivationRevised1stDTankCoatingPropertiesTankCoatingProperty性质Detergent洗涤剂EpoxyNormallyvegetable&animaloils,andnon-aggressivecargoesaresuitable.Highfattyacid&aggressivecargoesareunsuitable通常动植物油，非刺激性货物，高脂肪酸或刺激货物不适合Alkalis,weakacid,neutral碱类，弱酸，中性ZincChemicalcargoesaresuitable.AcidsorAlkalisarenotsuitable.TheirsuitabilityislimitedtoproductsinthepH-rangebetween5.5to9.0一般化学货物适合，酸碱不适合，适用于ph值在5.5-9之间的货物.neutral中性StainlesssteelVegetableoils,Chemicalbutsomecargosuchasaceticaciddependonkindofstainlesssteel植物油,化工品,但是化工品如冰醋酸需要看不锈钢的等级.Norestrictionbutalkalisdetergentcanberesultedtowhiteresidueonbulkheads没有限制,但是碱性洗涤剂可以导致舱壁上白色残留物Revised1stDec200425COMGroup,TMTankCoatingPropertiesTankCoKinds&Quantityofdetergent

GenerallyHighertemperatureofdetergentismoreeffective.ButsomeAlkalinedetergentcanremainwhiteresidueonthewallofcargotank.Theconcentrationofdetergentagainstwatershouldfollowmaker’srecommendationwhichismentionedinthedatasheet.通常温度越高,洗涤剂就越有效.但是有些碱性洗涤剂能够保留白色的残留物.洗涤剂的浓度大小必须要根据制造商的建议.Lowconcentrationofdetergentisnoteffectiveforcleaning.低浓度的洗涤剂对洗舱没有效果.Highconcentrationisnotpreferablebecauseofremainingwhitepowderonthewallortakinglongtimeforrinsing.高浓度的洗涤剂也不可取,因为遗留的白色粉末需要更长的时间清洗.Mixingdifferentdetergentwitheachotherisnotrecommended不建议不同的洗涤剂混合使用.Revised1stDec200426COMGroup,TMKinds&QuantityofdetergentDetergentcompatibilityChartwithTankCoatingKindofdetergent&chemicalEpoxyZincSUSTemp.againstdetergentAlkalinedetergent(B2,CausticSoda)SuitableUnsuitableSuitablebutremainswhitepowderonsurfaceMax.50CDuetowhitepowderNeutraldetergentSuitableSuitableSuitableMax.70CAcidascleaningmaterials(rustremover,phosphoricacid)Limitedaccordingtothematerialofcoating&coatingcondition.ItcanacceleratecoatingdamageUnsuitableSuitable30Cisnormal.Dependonconcentrationofacid&lastcargoMaxTemperatureagainstcoating80C70CNolimitationbutcoatingofsurroundingcargotanksandballasttankshouldbeconsidered

Revised1stDec200427COMGroup,TMDetergentcompatibilityChartStructureofcargotankNormallycentertankdoesn’thavemuchstructures(Stiffeners)whichcreatedifficultyfortankcleaning,buthoweverwingtankshavestructuressuchaswebframeandlongitudinalbeamwhichcanbeobstructedtodotankcleaningbyT/Cmachines.Thereforeheightofmachinehastobetakenintoconsiderationnottohaveshadowareaandeverystep(drop)hastobeadjustedtheheightofmachineperiodically.Tankcleaningtimeofwingtankisrequiredlongerthancentertank.Revised1stDec200428COMGroup,TMStructureofcargotankNormallMARPOLRegulation

MARPOLAnnex-1&2regulationssuchasspecialarea&limitationaboutdisposaloftankcleaningwatershouldbetakenintoconsideration.ForfurtherdetailsrefertoGuidanceofCargoRecordBookwhichprovidedbycompanyandMARPOLPublication.(SEESEPARATEDDATA)Revised1stDec200429COMGroup,TMMARPOLRegulation MARPOLAnnexOilDischargeMonitoringSystem(ODME)Revised1stDec200430COMGroup,TMOilDischargeMonitoringSysteItemstobeconsideredfortankcleaningplanning洗舱时需要考虑的事情Watersolubilityanditstemperature

水溶性和温度Polymerization

聚合性Meltingpoint=Freezingpoint

溶点=凝固点Boilingpoint

沸点Aggressiveness=Penetrating

刺激性=穿透性Staticelectricity

静电Vaporpressure

蒸气压PollutionCategory

污染类别TankCoating

货舱的涂层Inhibitor

阻聚剂Nextcargo

下一票货Revised1stDec200431COMGroup,TMItemstobeconsideredfortanCapacityofButterworthHeaterCapacityofButterworthHeaterdependsondesignedcapacity,seatemperature,&maintenanceofButterworthHeater.洗舱加温器的能力取决于设计能力,海水温度和维护.Revised1stDec200432COMGroup,TMCapacityofButterworthHeaterNumbersoftankcleaningmachinetobeusedduringtankcleaning如何决定洗舱时洗舱机数量Itisdecidedaccordingtocapacityoftankcleaningpump,powerpack&butterworthheaterandpropertyofcargo.

由洗舱泵的能力,功率,加温器和货物的性质决定的.

Ifcapacityoftankcleaningpumpis150m3,thenumberofT/Cmachinewillbe15018=about8.

如果洗舱泵的能力是150立方,那么洗舱设备的数量是150÷18=8(大约) Where:18isselectedfromtableoftankcleaningmachinementioned.18是根据所选用的洗舱设备所提到而决定的.However,thenumberofT/CmachinemaybelimitedbythecapacityofpowerpacksbecausenumbersofcargotankstobecleanedhavetoincludeandcapacityofbutterworthheaterincaseofT/Cofcargohadhighmeltingpointinwinterseason.但是决定洗舱设备数量并不仅仅局限于功率大小,还决定于加温器的能力,特别在冬季洗舱时,货物的溶点大于水温.Revised1stDec200433COMGroup,TMNumbersoftankcleaningmachiNextcargo

下一票货Cleaningofcargotankdependsonnextcargoifitislowergrade,samegradeorhighergradethanlastcargo.洗舱还决定下一票货是否比上票货等级低,同等或者高等级.Revised1stDec200434COMGroup,TMNextcargo下一票货CleaningofcarManpowerTankcleaningplanhastobereasonablymadetomeetcapacityandmanpowerofvessel’screw.

洗舱计划还必须根据船员的能力以及劳动力来决定.Revised1stDec200435COMGroup,TMManpowerTankcleaningplanhasStep(Drop)ofmachineStep(Drop)ofmachinedependsonpropertyoflastcargo,structureofcargotank,andnextcargo.步骤(下垂)根据上票货的性质,货舱结构和下票货来决定.3metersRevised1stDec200436COMGroup,TMStep(Drop)ofmachineStep(DroKindoftankcleaningwater洗舱水的种类Therearetwo(2)kindsoftankcleaningwateri.e.freshwaterandseawater.SomecargoessuchasCausticSodaorAcidsmakeareactionwithseawater.有两种洗舱水,淡水和海水.有些货可以和海水反应,如烧碱或酸.Itisrecommendedtousefreshwateratfollowingcases:下列情况下建议用淡水洗舱i)makingdetergentsolutionwithwater

使用洗涤剂.ii)lastcargoiscausticsodaoracids

上票货是烧碱或酸.iii)nextcargoissensitiveagainstchloride(MEG,Methanoletc.,)下票货对氯离子敏感.Revised1stDec200437COMGroup,TMKindoftankcleaningwater洗舱水PropertyofCargoTemp.(C)

Pressure(bar.)

T/CprocedureBWmachineCuring

BWcleaning

Detergent

SteamforNo.Step(drop)1.SolubleinwaterN/ANormalN/A(exceptmolasses)YesNoremovechlorideHalfoftotalnosminimumdrop2.Highvaporpressure(volatile)WithinLELMinimumEpoxytankGasfreeorafewminuteBWNoRemovesmellHalfoftotalnosOnedrop3.SolidifyHottemp.Max.N/AYesDependonnextcargoEmulsifyMax.Max.(everystep)4.HighviscosityHottemp.Max.N/AYesDependonnextcargoReduceviscosityMax.Max.5.PolymerColdMax.N/AYesDependonnextcargoSmellMax.Max.6.DryColdMax.N/AYesYes

Max.Max.7.Non-volatile)Warm&hatMax.DependoncargoYesDependoncargoSmellMax.Max.1+2(Acetone)ColdMin.EpoxytankGasfree&BWNoSmellMin.Onedrop1+3(Phenol)HotNormalN/AYesNoSmellNormal2-3drops1+4(TEA)HotNormalN/AYesNoSmellNormal2-3drops1+5ColdNormalN/AYesNoSmellNormal2-3drops1+6ColdNormalN/AYesNo

Normal2-3drops1+7(MEG)ColdMinN/AYesNoChlorideMin.2dropsRevised1stDec200438COMGroup,TMPropertyofCargoTemp.PressurePreparationfortankcleaning

Revised1stDec200439COMGroup,TMPreparationfortankcleaningTankcleaningplantobeprovidedaccordingly

只作相应的洗舱计划a)Time,Drops,Temperature,foreachcargotank时间，次数，温度b)Sequenceofhoseconnectiontomanifolds，软管接Manifold的顺序c)Rotationofcargotank，洗舱的先后d)Watchkeeping，监视洗舱e)

Ballastcontrolforadjustinglist&trim

压载舱调整船舶倾斜（前后，左右）f)Name&quantityofDetergent

洗涤剂的名称和数量Revised1stDec200440COMGroup,TMTankcleaningplantobeprovi

Explaintheplantocrew&theplantobepostedatCCRwithsignatureofcrew

向船员讲解洗舱计划并且将船员签字的计划贴在CCR上

Revised1stDec200441COMGroup,TM

Explaintheplantocrew&thFollowingstobepreparedinadvance

下面事项必须要提前准备a)Butterworthmanholes

洗舱孔b)PVvalves(toavoidconfusionwithcargoloadedtanks)PV阀c)

Lineupvalves(toavoidconfusionwithcargoloadedtanks)卸货阀d)

ManifoldsamplingflangesManifold样品法兰e)LetprepareDrainHoseatspilltank

f)Standbytankcleaningpump&cargopump

准备好洗舱泵和货泵g)Don'topenflangesofAircocksoncargopumpstackanddraincocksbecausecargomightleaked.h)FlangesofAircockstobeopenedonlyafterconfirmedthatcleanwaterisbeingdischarged.

Revised1stDec200442COMGroup,TMFollowingstobepreparedinaPre-cleaningWhendischargedpolymerizeordrycargo,thetankisrequiredtocarryoutpre-cleaningassoonascompletionofcargodischargeandaftergotdrycertificatefromcargosurveyor.ThesameprecautionsasPre-washatportarerequired.当卸完易聚合货物或干货后，货舱必须在拿到干舱证书后立即进行预洗。当然也要按照港口规则。Revised1stDec200443COMGroup,TMPre-cleaningWhendischargedpoBWCleaning(MainTankCleaning)6.1)

IncaseofPolymerizecargo,heatingcoilincargotank&cofferdamofcargopumptobeblownouttoavoidcargointheCargoLinestopolymerize.对于聚合物的洗舱，在货舱中的加热管和货泵的隔舱中必须吹管吹干净。防止货物在货管中聚合。6.2)

WhendischargingCategoryIII/cleantankwashingintotheSeathroughCargoManifold,allowsufficientlengthofCargoHose/HosetobelowereddowntoShip-sidetopreventdamagingofShip’shullpaint.(DuetoswingingofHoseincontactwithShipHull)Ifapplicable,don'tusecargohose6.3)

AssoonasthePumpstarts,thecleaningwateristobeconfirmedifitisbeingdischargedproperly.当泵机开始时，必须马上确认干净的水是否正确进入。6.4)

Whendischargingsimultaneouslytankcleaning