4TBA-REMOVAL-TWR.SYST.SU-FROM-T&I-580

NOTE:ThisisforTrainingonly,andisnotintendedtobeusedasastepbystepprocedure.PO/MTBETBAREMOVALCOLUMNSTARTUPFROMT&INOTE:ThisisforTrainingonly,andisnotintendedtobeusedasastepbystepprocedure.PO/MTBETBARemovalColumnStartupFromT&IPurposeThepurposeofthisprocedureistopreparetheTBARemovalColumnSystemtoreceivefeedfromupstreamequipmentfollowingmaintenance.Thesystemwillneedtoinitiallyacceptenoughfeedmaterialfromupstreamequipmenttoestablishatotalrefluxconditionoftheequipmentbeingstartedup.TheactofplacingthesystemintotalrefluxistoapplytheproperamountofreboilersteamflowtocreateenoughvaporsintheoverheadsystemtomaintainasteadyandcontinuousrefluxflowratewhiletherefluxdrumlevelcontrollerisinAutomaticcontrol.ConditionsTheTBARemovalColumnSystemhasbeenrepairedandtheequipmentisreadytoreturntoservice.NOTE:ThisisforTrainingonly,andisnotintendedtobeusedasastepbystepprocedure.PO/MTBENOTE:Airoroxygencanformapotentiallyexplosivemixturewithhydrocarbons,therefore,nitrogenpurgeallprocesslinesandequipmenttoatmosphereuntilprocesslinesandequipmentislessthan3%oxygen.Donotnitrogenpurgetotheblowdownsystemortheflaresystem.NOTE:TBAmayfreezeandsolidifyattemperaturesbelow25°C.Asequipmentisshut-downorblocked-inorwhenflowisstopped,ensureTBAisremovedfromlinesandequipmentifnotheattraced.Thisconditioncancauseunnecessarydowntimeordamagetotheequipment.Theoverheadlinesarenotheattraced.TBARemovalColumnStartupFromT&INOTE:ThisisforTrainingonly,andisnotintendedtobeusedasastepbystepprocedure.PO/MTBEGUIDELINENOTE:THETBAREMOVALCOLUMNCONTAINSANUCLEARMECHANICALSHUTTERWHICHHASTOBEOPENBEFOREINITIALLINGCOLUMNINHYDROCARBONSERVICE.Ensurethefollowingitemsarecompleted:•allpumpsuctionanddischargevalvesareopen.•allcontrolvalvesarelinedupwithclosedcontrolvalves.•allcontrolvalvebypassesareclosed.•thecolumnandassociatedequipmentinstrumentationhasbeenconnectedandreadyforservice.•allinsulationisinplaceforpersonalprotection.•allcontrolvalveshavebeenverifiedforproperoperation.•allisolationblindshavebeenturnedtotheproperoperatingpositionaspertheVisualInspectionBlindRemovalProcedureTBARemovalColumnStartupFromT&INOTE:ThisisforTrainingonly,andisnotintendedtobeusedasastepbystepprocedure.PO/MTBE•allutilityconnectionshavebeenturnedawayfromthevessels,blockedinonthevesselandblinded.•thecolumnandassociatedequipmenthasbeenpurgedofoxygenaspertheOxygenRemovalofProcessEquipmentprocedure.•thecolumnandassociatedequipmenthasbeenpressuretestedaspertheTightnessTestingofProcessEquipmentprocedure.•ensureallPSVsareproperlylinedupwiththePSVbypassesclosed.•ensureallheattracingisplacedbackinservice.•lineupallsightglassesforproperoperation•allkick-backblockvalvesorcontrolvalvesarelinedupTBARemovalColumnStartupFromT&INOTE:ThisisforTrainingonly,andisnotintendedtobeusedasastepbystepprocedure.PO/MTBEEnsurethefollowingvalvesareOPEN:•LineupbottomsoftheTBARemovalColumn01C0377throughthebottomspumps,throughthecontrolvalvetotheTBARecoveryColumn01C0342•Lineupfeedfromthe2ndStagePrimaryFractionatorbottomsthroughfeedcontrolvalvetotheTBARemovalPreheater01E0301•350mmrootvalveinthepipe-rackfromS1steamheadertotheTBARemovalColumnReboilers01E0357-A/B•25mmvalvetothesteameductorconnectedtotheTBARemovalReboilerCondensateDrum01D0363fromtheS4steamheader•100mmrootvalveinthepipe-rackfromtheTBARemovalColumnReboilerCondensatePump01P0368-A/Btothecondensatereturnheader•80mmkickbackvalvefromthedischargeofTBARemovalColumnReboilerCondensatePump01P0368-A/BtothetopofTBARemovalReboilerCondensateDrum01D0363TBARemovalColumnStartupFromT&INOTE:ThisisforTrainingonly,andisnotintendedtobeusedasastepbystepprocedure.PO/MTBE•100mmvalvedownstreamofcontrolvalveondischargeoftheTBARemovalReboilerCondensatePump01P0368-A/B•250mmrootvalveinthepipe-rackfromtheS1steamheadertotheTBARemovalPreheater01E0301•250mmvalveupstreamofcontrolvalveonS1steamtotheTBARemovalPreheater•25mmvalvetothesteameductorconnectedtotheTBARemovalPreheaterfromtheS4steamheader•150mmvalvefromtheTBARemovalPreheatertotheTBARemovalPreheaterCondensateDrum•150mmvalvefromtheTBARemovalPreheatertotheTBARemovalPreheaterCondensateDrum•80mmrootvalveinthepipe-rackfromtheTBARemovalPreheaterCondensatePump01P0369-A/BtothecondensatereturnheaderTBARemovalColumnStartupFromT&INOTE:ThisisforTrainingonly,andisnotintendedtobeusedasastepbystepprocedure.PO/MTBE•80mmvalvesupstreamanddownstreamofcontrolvalveondischargeoftheTBARemovalPreheaterCondensatePumptothecondensatereturnheader•40mmventvalveontopoftheTBARemovalPreheaterCondensateDrumtothesteameductorlinefromthepreheater•40mmkickbackvalvefromthedischargeofTBARemovalPreheaterCondensatePump01P0369-A/BtotopoftheTBARemovalPreheaterCondensateDrum•50mmkick-backvalvefromthedischargeofTBARemovalSideDrawPumps01P0353-A/Breturntothecolumn(locationclosetothetopofcolumnbelowrefluxtieintothecolumn)•40mmkick-backvalvefromthedischargeofTBARemovalSideDrawPumps01P0353-A/BtothereboilerreturntotheTBARemovalColumn•80mmfromthedischargeofTBARemovalSideDrawPumps01P0353-A/Bthroughcontrolvalveontothe2ndStagePrimaryFractionatorTBARemovalColumnStartupFromT&INOTE:ThisisforTrainingonly,andisnot