4A TOTS Chemical

Tanker Officer Training Standards (TOTS)

4A Chemical Tanker Simulator Training Course



CONTENTS Prerequisites.............................................................................................................................................................................1 . TOTS Reference...................................................................................................................................................................1 . STCW 95 Reference...........................................................................................................................................................1 . Physical Realism...................................................................................................................................................................2 . Behavioural Realism.........................................................................................................................................................2 . Operating Environment..................................................................................................................................................2 . Simulator Facility..................................................................................................................................................................2 .

SimulatorExercisesExercise 1. Simulatorandshipfamiliarisation...........................................................................................4 Exercise 2. Cargoplanningpaperexercise............................................................................................5 Exercise 3. Tankpreparation,washingandinerting.............................................................................6 . Exercise 4. Commenceloadingatthefirstloadport..........................................................................7 . Exercise 5. Midloading,monitoringcommencemoreloading,ballast.................................9 . Exercise 6. Completeloadingfirstport...........................................................................................................10 Exercise 7. Loadedvoyage,monitoring,agitation..................................................................................11 . Exercise 8. Firstdischarge,secondloadport............................................................................................12 . Exercise 9. Midsecondportloading,discharge&pre-wash...................................................13 Exercise 10. Completionofdischargeincludingstripping.................................................................14 . Exercise 11. Wash,ventilation,&cooling..........................................................................................................15 Exercise 12. DischargeresiduesatseaaccordingtoMARPOL...................................................16 Appendix I CargoStowagePlanAfterfirstloadport....................................................................17 Appendix II CargoStowagePlanAftersecondload/firstdischarge.................................18

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INTERTANKO2008DisclaimerWhilsteveryefforthasbeenmadetoensurethattheinformationcontainedinthispublication iscorrect,neithertheauthorsnorINTERTANKOcanacceptanyresponsibilityforanyerrors oromissionsoranyconsequencesresultingtherefrom. Norelianceshouldbeplacedontheinformationcontainedinthispublicationwithout independentverification.



PrerequisitesItisintendedthatbythetimecandidatesaregiventhistankersimulatortraining,theywillhave experiencedseatimeonsimilartankersandhavetakenpartinthesimilarexercisestothose simulatedhere.Thisencounterwithsimulatedexercisesshouldnotbetheirfirstexperienceofsuch operations. Itisintendedthatthesimulatorusedforthistrainingwillenabledemonstrationofthefollowing competencies:

TOTS ReferenceTOTS4A

CompetenceTraininginchemicaltankeroperations

STCW 95 ReferenceTableA-II/1.9 TableA-II/3.6 TableA-II/3.8 TableA-III/1.11 TableA-II/2.11 TableA-II/12.2 TableA-II/2.13 TableA-III/12.12 TableA-II/2.14 TableA-III/2.13 SectionA-V/1.19 SectionA-V/1.21

CompetenceMonitortheloading,stowage,securing,careduringthevoyageand unloadingofcargoes. Maintainseaworthinessoftheship.

Planandensuresafeloading,stowage,securing,careduringvoyage andunloadingofcargoes. Carriageofdangerouscargoes. Controltrim,stabilityandstress Monitorandcontrolcompliancewithlegislative requirementsandmeasurestoensuresafetyoflifeatseaand protectionofthemarineenvironment. Shipoperations(chemicaltanker) Emergencyoperations(chemicaltanker)

Forinstructor,supervisorandassessorqualificationsseeSTCW95RegulationI/6,SectionA-I/6 paragraph3andA-I/12paragraphs6to9.

INTERTANKO (TOTS) 4A Chemical Tanker Simulator Training Course

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Physical Realism IMO Model Course 1.04 Part D Appendix 9Thesimulatorusedshouldfulfilthefollowingminimumrequirements: Itwillsimulateatypicalcargohandlingsystemfoundonachemicaltankerbasedonrealoperational vessels. Theequipmentisarrangedinashiplikemanner.

Thesimulatorincludesthefollowingcomponentsandsubsystems: Cargocontrolsystem Ballastcontrolsystem Tankcleaningsystem Overboarddischargeandmonitoringsystems Tankcontentmonitoringsystems Inert/ventingcontrolsystemincludingsparging,gasfreeing,purgingandaerating. Tankatmospherecontrolsystem Alarmsystem Communicationsystem Cargopumpingsystem Asystemforcommunicatingwiththeoutsideworld Astabilityandstresscalculator.

Additionalresources:

Ship/shorechecklist Tankwashingchecklist NLSCargorecordbookextracts Logsheets

Behavioural Realism IMO Model Course 1.04 Part D Appendix 9Thesimulatormodelreplicatesthedynamicbehaviourofthecargohandlingsystemandits parameters.Furthermore,thesimulatormodelsimulatesthecomponents,theirprocessesandcontrol systems.Itwillbepossibletointroducefailures,breakdownsandweartoallequipmentsimulated.

Operating Environment IMO Model Course 1.04 Part D Appendix 9Thesimulatorwillsimulaterestrictionsandfailuresinthecargotransfer,forinstance,introducedby thesimulatedshoreterminal.Alarmswillbeannouncedbyflashingalarmlampsandsoundinthe cargocontrolroom.

Simulator FacilityTheseexerciseshavebeenwrittentakingintoaccountthevarietyofsimulatorswhichmaybeused tofacilitatethem.Asfewspecificfeaturesaspossiblehavebeenfeatured,soastoincreasethe adaptabilityoftheexercisestothevarioussimulatorsavailable. Thetankerinthispackageisdoublehulled,has10pairsofwingtanks,2to8ofwhicharesubdividedintocentreandwingspaces.Eachtankhasitsownpump,ventlineandmanifold.Thereare2 ballastpumps.Theballasttankarrangementhasnotbeenspecified. However,thesimulatorshouldhaveitsownCargoOperationsManualwhichwillbeusedduringthe training.

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Simulator ExercisesExercise 1. Simulatorandshipfamiliarisation Exercise 2. Cargoplanningpaperexercise

Exercise 3. Tankpreparation,washingandinerting Exercise 4. Commenceloadingatthefirstloadport Exercise 5. Exercise 7. Exercise 8. Exercise 9. Exercise 6. Completeloadingfirstport Firstdischarge,secondloadport

Midloading,monitoringcommencemoreloading,ballast Loadedvoyage,monitoring,agitation

Midsecondportloading,discharge&pre-wash

Exercise 10. Completionofdischargeincludingstripping Exercise 11. Wash,ventilation,&cooling

Exercise 12. DischargeresiduesatseaaccordingtoMARPOL Appendix I CargoStowagePlanAfterfirstloadport Appendix IICargoStowagePlanAftersecondload/firstdischarg

Exercise DescriptionsWhatfollowsbywayofexercisedescriptionshasbeenwrittenintheformofstudentsobjectives.In ordertopreventmultipleduplication,thenotesmayalsoformguidanceforinstructors.


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EXERCISE 1 Ship and simulator familiarisation ObjectiveThepurposeofthisexerciseistohelpyoubecomefamiliarwiththeoperationofthesimulatorand thecargosystem.Itissuggestedthatduringthisfirstexercise,aballastpumpisstartedinorderfor aballastspacetobetoppedoff.Thiswillgiveyouanopportunitytopracticepump,lineandvalve control.ItisalsosuggestedthattheInertGassystemisstartedandthecargosystempressurised,in orderforyoutofamiliariseyourselfwiththeinertingprocess.

InformationThevesselhasjustdepartedfromdrydock,sothecargosystemisgasfreeandwillneedinerting. Allbunkers,freshwaterandballastareasperthenormalballastcondition,otherthentheforepeak ballasttank,whichneedstoppingup. Note:Itisappreciatedthatnotallliquidcargosimulatorswillhaveexactlythesamefunctions incorporated.Thefollowingaresuggestionsofsystemswithwhichyouneedtobefamiliar:1. 2. 3. 4. Checkthevariouspagesofthevesseldisplayandespeciallythelocationandactivationofthe EMERGENCYSTOPfunction. LocatetheindividualCARGOandBALLASTtankstatuspages,notforgettingeachelementofthe ballastsystemincludingforeandaftpeaktanks,ifwithintheballastsystem. FamiliariseyourselfwiththeDRAFTINFORMATION,whichwillbeimportantforarrivalstatusandwhen strippingcargoandballasttanks,aswellasanydraftrestrictions. Establishhowtoco-ordinatePOWERREQUIREMENTSfordeckandcargogear.Theserequirements willalterdependingontheoperation,soyouneedtobefamiliarwiththeirsourceandtheplanningof requirements. BefamiliarwithGENERALOPERATINGPARAMETERSintermsofmaximumandminimumlevels.On thesimulatorinusecanambientweatherconditionsbealtered? ThepagesofthesimulatorscreendetailingtheCARGOTANKselectionandpreparation,valve,leveland alarmfunctionswillneedcloseattention. BearinginmindthenumberofconfinedspacesontankerstheGASDETECTIONpanelswillbeof particularconcern. ItiscrucialthatBALLASTCONTROL,valves,levelandalarmfunctionsaremonitoredfrequentlyduring theseoperations. SomecargoesrequireaccurateCARGOTEMPERATURECONTROLfunctions,water,steamorthermal oil. AnumberofexercisesrequiretheuseofTANKWASHINGfunctions,supplyingeitherseaorfreshwater. AlmostallexercisesinvolveINERTGAS,NITROGENANDVENTINGARRANGEMENTS.Certain exerciseswillalsoincludeVAPOURRECOVERY,soaclosefamiliaritywiththesefunctionswillbe necessary. SometankpreparationrequirementswillinvolveMECHANICALVENTILATIONsothefunctionofthe fanssupplyingthisisimportanttomaster.

5. 6. 7. 8. 9. 10. 11.

12.

13. PUMPCONTROLSofeachtypeofpumpshouldbemasteredearlyintheprogramme,whichispartly whyoperationoftheballastpumpisincludedinthisfamiliarityexercise. 14. 15. 16. ThefunctionsoftheMANIFOLDCONTROLSrequirefamiliarity. DonotforgetthetankDRAININGANDSTRIPPINGarrangementsforcargoandballastsystems,as theywillbeutilisedduringthetraining. Donotforgeteithertomonitorthestatusoftheballasttankbeingworkedduringthisfamiliarisation exercise. INTERTANKO (TOTS) 4A Chemical Tanker Simulator Training Course

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EXERCISE 2 Cargo planning Paper exercise ObjectiveToplanthestowageofaseriesofparcels,withreferencetotheUSCGcargocompatibilitychart, takingintoaccountthesegregationofincompatiblecargoes.Acargoplanisappendedtothis packagesothecargoesincludedthereinmaybeusedforthisexercise,ifthetrainingestablishment sodesires.

InformationItisimportanttodiscussthefollowinginaccordancewiththeobjectivesofthisexercise:

Cargoquantitiesandtankcapacities Physicalandreactivepropertiesofeachcargo Compatibilityofeachcargoparcel Tanksegregation Temperaturecontrolrequirements Vapourreturnrequirements Cargodistributionwithrespecttohullstresses Methodofproducingplan Datagatheringforeachparcel Compatibilityofeachparcel Finalstowageplan

Competence RequirementsUnderstandtheprinciplesofcargoplanning,incorporatingcompatibilitychemicalmanualissues (includingexceptions)anddataguidesegregation, Understandtheinfluencethephysicalpropertiesofcargoparcelswillhaveonthestowageplan Understandtheneedfortankpreparationwithspecificreferencetotankatmospherecontrol, includingsafetyandcommercialissues. Thegeneralscenarioisthatthevesselisinthenormalballastconditionwithfreshairinallthecargo tanks.Therearenoresiduesonboard.

Note:Sincethefeasiblepermutationsofappropriateplansishuge,aslongasallrequirementsof compatibilityandphysicalissuesaremet,apre-arrangedplanwillbeutilisedfortheremainderofthis trainingprogramme.


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EXERCISE 3 Tank preparation washing and inerting ObjectiveThisexerciseisfocussedontheobjectiveofpreparingthevesseltostarttrading.Cargoordershave alreadybeenreceivedandtheseincludehighspecificationcargoeswhichwillrequirewellprepared tanks.Thisexercisewillinvolvethefinalstageofthepreparativeprocessinvolvingahotfreshwater washoftanks6CP&S,7CP&S,1P&S,2P&S.Inaddition,tanks5CP&Sneedtobeinertedwith nitrogen.

Information1. 2. Setupthetankwashingsystemandfreshwaterheatingarrangements,inordertowashthepairsof tanksdetailedaboveintheobjective,6CP&S,7CP&S,1P&S,2P&S. Intheinterestsofbestpractice,pressuretestthewashingsystempriortouse,atatestpressure marginallyabovetheworkingpressure.Thistestmaybecarriedoutwithcoldratherthanhotwater. Youmustdecidewhetherfreshorseawaterwillbeanappropriatemediumforthistest,notingthe preparationrequirementsofthenextcargointhosetanks. 5CP&Swillneedinertingwithnitrogen.Again,youmustdecidewhichmethodofinertingismost appropriateforthecircumstances:dilutionordisplacement. Allfixedandportablegaddetectionandanalysingequipmenthasbeenchecked,calibratedandisready foruse.

3. 4.

Competence Requirements1. 2. 3. 4. Intheinterestsofbestpractice,ensuretherelevantchannelsofcommunicationareworkingsmoothly. Youhavealreadyfamiliarisedyourselfwiththenitrogenplant,duringExercise1,soitisnowtimetouse thatknowledgeforthepurposeofinertingthesaidtanks. BearinmindthepressuresettingsinthetankP/Vvalves,considercarefullytheinletvelocityofthe nitrogenintothetanksandpaycloseattentiontothedeliveryandmainpressures. Considercarefullytheambienttemperatures,includingairandseatemperatures.Rememberthatvast differencesinsuchtemperaturesinsideandoutsideofthetankscouldresultincondensation.The resultantpotentialcargocontaminationissuescouldbecommerciallydamaging.Ensurethedewpointof thenitrogendestinedfor5CP&Sisoflowdewpoint,toensureadrytankatmosphere.

Ensureyoubecomewellpracticedwithdrainingandstrippingproceduresduringthiswashing operation,inthelightofthecargooperationstofollowinduecourse.

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EXERCISE 4 Commence loading ObjectivePlanandexecutealoadingoperation,withdueaccordancewithsafetyandpollutionpreventative measures.Ensurepre-cargochecksandtestsarecarriedout,includingalarms.

Information1. 2. 3. 4. 5. Thevesselissecurelymooredportsidealongside. Cargotankswillhavebeencleanedandpreparedreadyforloading.Thevesselisballastedtothe normalarrivalballastcondition. Youwillhavehadtoprepareacargoloadingandde-ballastingplananditwillbeimportanttofollowthe plantoenablethetwooperationstobeconductedsimultaneously. Thevesselsdraft,trim,listandstressesarenottoexceednormaloperationalparameters. Thetankstobeloadedatthefirstloadportareasfollows: 1P&Sand2P&S PotassiumHydroxideSolution40% Benzene Acetonitrile Aceticacid CTC 3CP&Sand4P&S 6CP&Sand7CP&S 8CP7Sand9CP&S 10P&S

Ofthesegrades,Potassiumhydroxidesolution40%,Acetonitrile,andCTCwillbestartedinthisexercise inanyorderofyourchoosing.BenzeneandAceticAcidwillbestartedinthenextexerciseasthe Benzenerequiresavapourreturnline. Whenplanningthisloadingoperationtakeintoaccountthemaximumloadingratesofeachtank,in relationtoitsventingcapability.

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Competence Requirements1. 2. 3. 4. Monitorthewayinwhichtheloadingofeachgradeiscommencedwithrespecttocommunications, loadingratesandnumberoftanks. Monitorthesamplingprocedures. Onceloadinghasstartedintherequisitecargotanks,monitorthewayinwhichde-ballastingoperations aremanaged. Demonstratefrequentmonitoringofallcargoandballasttanks,toensurethatemptytanksarenot leakedinto.Atthisfirstloadport,eachparcelisbeingloadedintofourcargotanks,withtheexceptionof theCTC,whichisgoingintotwotanks. Demonstratehowthedischargepressuresoftheballastpumpsshouldbemonitored.Thecargo manifoldbackpressureshouldbeconstantlymonitoredandrecordedinthecargolog. Generalcommunicationswithdeckcrewandterminalshouldbemaintainedefficiently. Whilstalongside,mooringandsecuritywatchesneedtobemaintained. Youshouldagreewiththeterminalthesamplingprocedurestobefollowedforeachgrade. Statewhichtankalarmsrequiretestingbeforeloadingcommences. Statewhichchecksarerequiredontheventingsystems.

5. 6. 7. 8. 9. 10.

11. Statewhichprovisionsaremadeforgastesting.


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Loading PlanLoad Port 1 Cargo to LoadPotassiumHydroxide40% Benzene Acetonitrile AceticAcid CTC Tanks Tanks Tanks Tanks Tanks 1P,1S,2P,2S 3CP,3CS,4CP,4CS 6CP,6CS,7CP,7CS 8CP,8CS,9CP,9CS 10P,10S

NotethatloadingwillcommencewithPotassiumHydroxide40%,acetonitrileandCTC.Atthe terminalsrequest,theloadingofBenzeneandAceticAcidwillcommenceabouttwohoursafterthe startoftheothergrades.

DeballastingDrawupaballastingplanwhichwilltakeintoaccountthesailingconditionofthevessel.Remember thattrimandlistmaybeadjustedtofacilitatethedrainingandstrippingofcargotanks. Calculate,withtheaidofthesimulatorfacility,thevesselsdraft

Port 2 - Load / Discharge Cargo to LoadToluene PropyleneOxide Acetone Methanol 1840m3 840m3 2250m3 2200m3 Tanks Tanks Tanks Tanks 3P,3S,4P,4S,5P,5S 5CP,5CS 6P,7P,8P,9P 6S,7S,8S,9S

Cargo to DischargePotassiumHydroxide Benzene AceticAcid CTC AllTanks AllTanks AllTanks AllTanks

Tanks to be pre-washedCTCtanks,10P&S

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EXERCISE 5 Mid loading, monitoring, commence more loading, de-ballast ObjectiveDuringthisexercisemultipleoperationswillbeoccurringsimultaneouslysoyouwillhavean opportunitytoexperiencetheneedtomonitorandmanageeachofthem.Thenatureofthechemical parceltankerissuchthatitisvitaltobefamiliarwiththistypeofmulti-tasking.Itisalsoimportantto beabletoutilisetheresourcesatyourdisposalandensurethatsmoothchannelsofcommunications arekeptrunning.

Information1. 2. 3. Thevesselhasalreadystartedtoloadthefollowingcargo; 1P&Sand2P&S 10P&S PotassiumHydroxideSolution40% Acetonitrile CTC 6CP&Sand7CP&S

Thisexercisewillinvolvetheloadingofthefollowing; 3CP&Sand4P&S 8CP7Sand9CP&S Benzenethisparcelwillrequirethevapourrecovery arrangement. Aceticacid

De-ballastingplansshouldhavebeenmadeinordertocounteractthestabilityimplicationsandstresses imposedbythemovementoftheseparcels.

Competence Requirements1. 2. 3. 4. 5. 6. Ensureyouarecomfortablewiththeloadingoftheinitialgroupofparcels.Befamiliarwithroutineand frequentchecksofullagesandoftheballastpumps. Statewhichchecksshouldyoumakepriortostartingtoloadthesetwoparcels. Statewhicharethestaticelectricityimplicationsatthestartofloadingatank.Atwhatpointmaythe maximumbulkloadingrateberequested. Statewhatactionshouldbetakentoavoidmultipletanksattainingtheirtoppingoffullageatthesame time. Statewhatareyouroptionsshouldyoubeunabletocopewithsomanysimultaneousoperations. StatehowtheloadingrateoftheBenzeneparcelmaybeaffectedbytheuseofthevapourreturn manifold.


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EXERCISE 6 Complete first loading port ObjectivesThisexerciseisdesignedtofamiliariseyouwiththemanagementofmultipleoperationsconcurrently withtoppingoffcargotanksandclearingoflines.

InformationTheparcelsofCTC,acetonitrileandpotassiumhydroxideareclosetotoppingoffandtheirloadingwill becompletedduringthisexercise.ThoseofAceticAcidandBenzenehavenotlongstarted. Alltankscontinuetoneedmonitoring,nomatterwhattheirstatus.However,theoriginalplanningof staggeringtheparcelsapproachingtheirfinishcancometofruitionduringthisexercise. Linesaretobeclearedoncompletionofloadingeachgrade. Thefollowingtankswillbetoppedoffduringthisexercise: 1P&Sand2P&S 6CP&Sand7CP&S 10P&S PotassiumHydroxideSolution40% Acetonitrile CTC

Loadingwillcontinueinto; 3CP&Sand4P&S 8CP7Sand9CP&S Benzene Aceticacid

De-ballastingwillalsocontinue.

Competence Requirements1. 2. 3. 4. 5. 6. 7. 8. 9. 10. Alltankscontinuetoneedmonitoring,nomatterwhattheirstatus.However,theoriginalplanningof staggeringtheparcelsapproachingtheirfinishcancometofruitionduringthisexercise. Linesaretobeclearedoncompletionofloadingeachgrade. Statewhichtankswillreachfinishingullagefirst. Statehowastaggeredtoppingoffsequencecanbeestablished. Statewhattherespectiveadvantagesanddisadvantagesbetweenashipstopandashorestopare. Statewhatistheprincipleconcernonthetankeriswhentheterminalrequesttheclearingattheircargo lines. Discussthecontrolofloadingratesastanksapproachtheirtoppingoff. Statewhycommunicationwiththeterminalissoimportantduringthisstageofthecargooperation. Statewhatthepossibleconsequencesareofclosingatankvalveagainsttheflowofcargobeingloaded fromashore. Discussthestrategyadoptedbythestudentsduringthetoppingoffofthevarioustanks.Were communicationstestedandwasareductioninloadingraterequestedbeforeeachtankreacheditsfilling level.

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EXERCISE 7 Loaded voyage, monitoring, agitation ObjectivesAswellasgeneralmonitoringandcargocare,theBenzeneparcelwillrequireagitationorrecirculation,bearinginminditsviscosityandfreezingpointtemperature.Forthefirsttime,acargo pumpwillbestarted.

Information1. 2. 3. Thetankerisatsea,partiallyloaded.TheBenzenecargorequiresre-circulatingand,priortoarrivalat thenextport,thetankspreparedtoreceivepropyleneoxideneedtheiratmosphereschecking. Theshipwillbeatseaonaloadedpassagewiththepowerononlyforcargomonitoringsystems.Power foroperatingcargopumpsandvalveswillneedtoberequestedandestablished. Donotforgettomonitorallothercargoandballastspacesforanomalies.

Competence Requirements1. 2. 3. 4. 5. Statewhatcommercialorlogisticconcernsmayarisebyhavingtoexecutethistaskonaloadedsea passage. Statewhoismorelikelytoissueinstructionsregardingagitation. Statewhyitisnecessarytopurgethecofferdamofthesubmergedpumpsbeforeandaftertheiruse. StatewhatactionsshouldbetakenintheeventofaleakofBenzeneontothedeckduringtherecirculationofcargo. StatewhyPropyleneOxideneedtobetransportedinaspecifiedatmosphere.

Note:Thenitrogenatmospheresinthetanksduetoreceivepropyleneoxide,5CP&S,canbechecked forpressureandoxygencontent.Thisisbestdoneoncethere-circulationoftheBenzeneparcelhas beenstarted.


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EXERCISE 8 First discharge, Second load port ObjectivesAsavariationtopreviousmulti-taskingexercises,operationstomanageinthisoneinclude discharging,loadingandde-ballasting.Donotforgettheimportanceofcheck-listsandthefollowing ofcargo/ballastplans.

InformationTerminalrequirementsnecessitatethatdischargingiscommencedpriortotheloadingofanygrades. ThePropyleneOxidegradeistobeloadedlast. Thedischargeofthefollowingparcelsisplanned; CTC PotassiumHydroxide40% Benzene AceticAcid from from from from 10P&S 1&2P&S 3CP&S,4CP&S 8CP&S,9CP&S

Loadingofthefollowingcargoesisplanned; Toluene Acetone Methanol PropyleneOxide into into into into 3P&S,4P&S,5P&S 6P,7P,8Pand9P 6S,7S,8Sand9S 5CPand5CS

Thetanksloadingtolueneandpropyleneoxidewillrequireavapourreturnline.Ballastingwillneedto beplannedinlinewithloading/discharge. Asbefore,donotforgetthemaximumloadingratesapplicabletoeachcargotank.

Competence Requirements1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. Statewhereinformationandadviceregardingtankpreparationislikelytocomefrom. Statewheretheminimumsafetycriteriaforthecarriageofthiscargoarelisted. Statethespecificcarryingconditionsgenerallyrequiredforthesecargoes. Statetheformsofcontaminationthatthetankinspectionswillbeinvestigating. Statewhatproceduresshouldbeadoptedatthestartofdischargetominimisethepossibilityofpressure surgesinthelines. Statewhyitisimportanttoincorporateflexibilityintothecargoplan. Statewhytheacetonetanksmightnotbeloadedto98%full. Statethesystemsusedforgaugingofcargotanks. Statewhatfactorsaretakenintoaccountwhencalculatingcargoquantities. DiscusstheconstructionandoperationofFramopumps. DescribeanddemonstratethecorrectwaytostartaFramopump. Discussthechecksandproceduresthatshouldbeusedwhenstartingtodischargefromanytank. Discussthepossibilityofflowofliquidbackintoatankconnectedtothesameline.

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EXERCISE 9 Mid Second port loading, discharge & pre-wash ObjectivesThisexerciseisfocussedontherequirementtoperformapre-washofthetanksfromwhichCTChas justbeendischarged.

Information1. Thestatusofthecargotanksbeingworkedwillbesuchthatastaggerwillhavebeenestablishedin orderthatresourcesmaybetemporarilyconcentratedonthestartingofthewashingprogramme.This activityshouldinnowayunderminethemonitoringofotheroperations.Youshouldalsounderstandthat thepre-washneedswitnessingandrecordingbyaMARPOLcargoinspector. Oneoftheaimsoftheexerciseistorealisethebenefitofsoundforwardplanningandefficientresource management.Anumberofactivitieswillbeon-goingsimultaneously,andthemanagementofsuch formstheessenceofchemicaltankeroperations.Whilstmonitoringalladditionalactivities,10PandS requireapre-washimmediatelyuponcompletionoftheirdischarge.Thedurationandnumberofcycles ofthispre-washwillbedeterminedbyconsultationwiththetankersP&Amanual.Itissuggestedthat thetankwashingmachinesarerunfor40minutesineachtank,concurrently,inorderforthewashingto beefficient. Ensurethattheabovestepshavebeentakenpriortothesettingupandpre-washingofthenecessary tanks.Communicationswiththedeckwatchshouldremaineffective.Alsoitisgoodpracticetoadvise theterminalofthecommencementoftankwashing.Ensurethatthelines,valvesandpumpsaresetup accordinglyandthatthepumpsarestartedandpressurebroughtonthelines,followinggoodpractice.

2.

3.

Cargoisbeingloadedasfollows: Toluene Acetone Methanol PropyleneOxide PotassiumHydroxide40% Benzene AceticAcid into into into into from from from 3P&S,4P&S,5P&S 6P,7P,8Pand9P 6S,7S,8Sand9S 5CPand5CS 1P&S,2P&S 3CP&S,4CP&S 8CP&S,9CP&S

Dischargewillcontinue;

ThetanksfromwhichCTChasjustbeendischargedwillrequireapre-wash,soyouwillhavetosetup thetankwashingline,startthetankwashingpumpandstartthewash.

Competence Requirements1. 2. 3. 4. 5. 6. 7. 8. 9. Statewhatpre-planningisrequiredtoenablethepre-washtobestartedwithoutjeopardisingother concurrentoperations. Statehowapparenttrimdifficulties,presentedwiththeneedtocompletedischargeofCTCfromtheaft cargotanks,canfirstbeovercome. Statewhichshorebasedofficialwillneedtowitnessthepre-wash. Statewhattheoptionsareifsuchanofficialisnotavailable. Statewheretheverificationofthepre-washwillberecordedandhowitwillbeverified. Discussthemanagementofpressurewithinthetankwashingsystem. Discussthevariouspre-washproceduresandrequireddocumentation. Statehowyouwillknowifthetankwashingmachinesarefunctioning. Statetheproceduresyouwillfollowoncethepre-washhasbeencompleted.


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EXERCISE 10 Completion of discharge including stripping ObjectivesManagethedrainingandstrippingofthetankstobedischarged.Thiswillinvolvegoodpump handlingandoperationofthestrippingsystem.Atthesametimeyouarerequiredtomanagethe ongoingloadingoperationandcontrolthetrimandlistfordrainingandstrippingoftanks.Acargo planforthisoperationmustbepreparedbeforestartingthisoperation.

Information1. 2. 3. Thetaskinthisexercisewillbetostripthefollowingtanksashore; PotassiumHydroxide40% Benzene AceticAcid from from from 1P&S,2P&S 3CP&S,4CP&S 8CP&S,9CP&S

Thetanksthathavedischargedtheabovecargoesneedtobestrippedtothemaximumextentpossible. Loadingcontinuesinthefollowingtanksandwillneedtobemonitoredatthesametime. Toluene Acetone Methanol into into into 3P&S,4P&S,5P&S 6P,7P,8Pand9P 6S,7S,8Sand9S

Competence Requirements1. 2. 3. 4. 5. 6. 7. 8. Statewhyisitsonecessarytostripthetanksdry. Statewhichsourcesofinformationcanbeconsultedforinformationregardingstrippinglimits. Statewhatpracticalimplicationsareassociatedwithpoordrainingofthecargosystem. Statewhatcommercialimplicationsareassociatedwithpoordrainingofthecargosystem. Stateifanyofthesethreeparcelsrequireapre-wash. Statewheresuchinformationcanbefound. Statehowshouldthecargopumpsshouldbecontrolledduringthedrainingofthetanks. Statewhatwouldhappenifthepumpcontrollerinthecargocontrolroomweretofailduringthis operation.

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EXERCISE 11 Wash, ventilation and cooling ObjectiveTheobjectiveofthisexerciseistoventilatetanks3CP&S,4CP&S,whichpreviouslycontained Benzene,andtocoolthecargoofPropyleneOxide(P.O.).

Information1. Thevesselisatseaafterleavingthesecondloading/dischargeport.Emptytanksaretobecleaned readyforthenextcargo.ThiswillinvolvethewashingoftheAceticAcidtanks.Thetankwashings willbetransferredto10P&Swhichwillbenominatedassloptanks.(Inthenextexercisethesewillbe decantedoverboard.) Thecargoordersforthenextloadinghavebeenreceivedanditcanbetakenthatthestandardof washingrequirediswaterwhite.Thenextcargoeswillbelowspecificationandnon-aggressive. TheBenzenetanksarealsotobecleaned.Beingavolatilecargo,thiscanbecleanedbyventilation alone. TheP.O.cargotemperaturehasbeenallowedtorisetoabout17Candthisisneartotheupper acceptabletemperaturelimit.Thecoolingsystemistoberuntopreventanyfurtherriseintemperature andtocoolthecargobyafewdegreesoverthenext48hours.

2. 3. 4.

Competence Requirements1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. Statewhichtanksarerequiredtobewashed. Statewhatsortofwashingmediumshouldbeused. Statewhatsortofwashingcycleshouldbeutilised. Statewhatshouldbedonewiththetankwashings(vesselisonly7milesfromthenearestland). Statewhichtankscanbeusedassloptanks. StatehowtheBenzenetanksmaybecleaned. Statewhatoptionsaretherearefortheventilationofthesetanks(topbottom,bloworextract). StatewhattheidealcarriagetemperatureisfortheP.O. TheP.O.cargoisalittleabovetheidealtemperature.Statewhatoptionsarelikelytobeavailablefor coolingonthisship,andonotherships. Statewhetherthefreshwatercoolerorthethermaloilcoolershouldbeused. Statewhatchecksshouldbemadewhencoolingthecargointhisway. StatewhichchecksshouldbemadeontheatmosphereintheP.O.tanks. StatehowtheatmosphereintheP.O.tanksbemaintained. Statehowthesemultipleoperationsshouldbecontrolled. Statewhichrecordsshouldbekeptduringtheseoperations.


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EXERCISE 12 Discharge residues at sea according to MARPOL ObjectivePrepareandexecuteaslopdisposalplanfollowingthecorrectproceduresinordertodischarge residues,asperMARPOLandtheP&Amanual.Distinguishbetweenthoseslopswhichmayand thosewhichmaynotbedischargedatsea.

Information1. 2. Thevesselisatsea,outsideofaspecialarea,underwayataspeedinexcessof16knotsandinwaterof about75metresdepth.Thenearestlandisabout17.5milesaway. Slopsarecontainedin10P&Scargotanksandaretheresiduesofthetankwashingpreviouslycarried outinthecargotanksthatcontainedAceticAcid.

Competence Requirements1. 2. 3. 4. 5. 6. Prepareaplanforthedischargeoftheslopswhichshouldincludeplanningfornecessarypower requirementsinordertooperatevalvesandpumpsinthecargoarea. EnsurearecordofeventsismaintainedandtheNLSCargoRecordBookiscompletedasrequired. EnsuretheproceduressetoutintheshipsP&AManualareadheredto. Ensurethatgoodpumpingpracticeisusedwhenstartingtheoperation. MaintainanaccurateanddetailedlogofeventsandcompletetheNLSCargoRecordBookasrequired. Statewhichchecksshouldbemadeonthestatusoftheothercargotanksduringthisoperation. RememberparticularlythesensitivityoftheP.O.cargo.

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APPENDIX I

CARGO STOWAGE PLAN AFTER FIRST LOAD PORT

CarbonTetrachlorideCTC

AceticAcid

Acetonitrile

Benzene

PotassiumHydroxide40%


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APPENDIX II

CARGO STOWAGE PLAN AFTER SECOND LOAD / FIRST DISCHARGE10 9 8 7 6 5 4 3 2 1

Acetone

Acetonitrile

PropyleneOxide

Methanol

Toluene

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4A TOTS Chemical

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