SGC Fuel Oil : MBN01EC001

Start up Program : ( Steps 1 30 ) Step 1 : * Ignition gas unloading valve ..MBQ13AA501 Close * Confirms NG ESV ..MBP13AA051 Close * Confirms Turbine Speed ..MBY10CS901 47.5 rps

If FO start ----- Proceeds to Step 2

If Fuel Change Over ----- Proceeds to Step 23 ***** Preparation of all components of FO Diffusion system *****

Step 2 : * FO DM Seal Air valve ..MBN34AA051 Close * SLC to Enclosure Vent ..SAM32EE010 Start * FO Forwarding System ..EGC10EU001 Start Request

* Confirms Fuel Oil return valve Close

Step 3 : * SLC FO Injection Pump ..MBN12EE010 On * Ignition Gas Unloading Valve ..MBQ13AA501 Close * FO DM Seal Air Valve ..MBN34AA051 Close * Checks for Suction Pressure > Min ( min 5.5 bar ) Step 4 : * FO DM Feed Unloading Valve ..MBN14AA501 Close * FO DM Return Unloading Valve ..MBN52AA501 Close ,

Checking o If Start with Ignition Gas

TS > 5.5 rps Ignition Unloading Valve Close Ignition Gas for FO Start Selected

o If Start with Natural Gas TS > 8.0 rps Natural Gas for FO Start Selected

Step 5 : * FO Drain Valve ..MBN22AA001 Open * Ignition Gas Valve 1 ..MBQ11AA001 Open * Ignition Gas Valve 3 ..MBQ11AA003 Open * Ignition Transformer ..MBM12GT001 On

Step 6 : * Based on OTC, Control from governor, FO control valve opens proportionately to its start position. ( 5.25 % )

* If Ignition = NG

o Checks for TS > 12.5 rps o Opens NG ESV

Else o Checks for TS > 6.6 rps o Ignition is Ok.

SGC Fuel Oil : MBN01EC001 Step 7 : * Open FO DM ESV ..MBN14AA051 Open * Open FO Return ESV ..MBN52AA051 Open * Open FO DM CV ..MBN14AA151 Proportion Opens proportionately based on Governor. Step 8 : * If For FO start = NG

o Checks for TS > 25 rps If For FO start = IG

o Checks for TS > 12.5 rps

Step 9 : * Checks for Ts > 47.5 rps ( monitor speed rise )

* Monitor speed rise to 47.5 rps, Governor increases the FO flow gradually to accelerate by lifting the FO DM CV ..MBN14AA151.

Step 10 : * Monitoring speed rise Step 11 : * Steady State Operation ************************** Change Over from DM to PM ************************** Step 12 : * FO CV Proportion ..MBN04DU003

FO CV ..MBN14AA151 Proportion Opens proportionately based on Governor.

* Filling of water FO Premix line. Step 13 : * Seal Air to FO PM Burner ..MBN44AA051 Close * Cmd Quick Transfer to FO PM ..MBN04DU003 Step 14 : ****** Premix Burner Cleaning ****** * SLC Flushing Water ..MBN80EE010 On * FO CV ..MBN04DU003 Proportion * FO PM CV ..MBN23CG151G Min Setting Step 15 : * FO PM ESV ..MBN23EU050 Open Step 16 : * FO PM CV ..MBN04DU003 Proportion Step 17 : * SGC Emulsion Water System ..MBU02EC001 Start If Propn FO CV Start Preset Opening

FO PM ESV ..MBN23AA051 Close

Proceeds to Step 19 Else Proceeds to Step 18

************************** Steady State Operation **************************

SGC Fuel Oil : MBN01EC001 Step 18 : * If DM > PM, Proceeds to Step 19 ************************** C/o From PM to DM FO Begin ************************** Step 19 : * SGC Emulsion Water System ..MBU02EU003 Shut Down Step 20 : * Proportion FO CV ..MBN04DU003 Activates * FO PM ESV ..MBN23AA051 Close * SLC Flushing Water ..MBN80EE010 Start Step 21 : * SLC Flushing Water ..MBN80EE010 Shut Down * FO PM Ring Flush Valve 1 ..MBN84CG051 Close * FO PM Ring Flush Valve 2 ..MBN84CG052 Close Step 22 : * FO PM Seal Air Valve ..MBN44AA051 Open * FO PM Drain Valve 1 ..MBN45AA401 Open * SLC Flushing Water ..MBN80EE010 Shut Down * Proceeds to Step 11 for Steady State Operation * ************************** C/o From PM to DM FO Begin ************************** Step 23 : ***** Forwarding Step For Fuel Change Over From Step 1 ****** Step 24 : * SLC Flushing Water ..MBN80EE010 Start Step 25 : * SLC FO Injection Pump ..MBN12EE010 On

* Checks for inlet pressure ..MBN12CP901 > Min * Checks for IGV Controller release for FO

Step 26 : * FO DM Seal Air Valve ..MBN34AA051 Close Step 27 : * SLC Flushing Water ..MBN80EE010 Shut Down * FO DM ESV ..MBN14AA051 Open * FO Return ESV ..MBN52AA051 Open Step 28 : * Checks for NG ESV ..MBP13AA051 Close Step 29 : * End of Change Over Mode * * Proceeds to Step 11 for Steady State Operation * Step 30 : * Reserved

SGC Fuel Oil : MBN01EC001

Shut Down Program : ( Steps 51 55 )

Step 51 : * FO DM ESV ..MBN14AA051 Close * FO PM ESV ..MBN23AA051 Close * FO Injection Pump 1 ..MBN12AP001 Off * FO Injection Pump 2 ..MBN12AP002 Off * SLC FO Injection Pump ..MBN12EE010 Off * SLC Flushing Water ..MBN80EE010 On

* FO Forwarding System ..MBY00EU002B Off ..EGC10EU001 Off ****** Purging of FO burners ******

Step 52 : * FO DM Seal Air Valve ..MBN34AA051 Open * Purging of Burners ..MBN80EE010 Do Flushing Step 53 : * FO DM Seal Air Valve ..MBN34AA051 Open * FO PM Seal Air Valve ..MBN14AA051 Close * Purging of Burners ..MBN80EE010 Do Flushing Step 54 : * FO DM Seal Air Valve ..MBN34AA051 Open * FO PM Seal Air Valve ..MBN14AA051 Open

o Checks for SLC FO Injection Pump ..MBN12EE010 Off FO Injection Pump 1 ..MBN12AP001 Off FO Injection Pump 2 ..MBN12AP002 Off FO DM ESV ..MBN14AA051 Close FO PM ESV ..MBN23AA051 Close FO DM Seal Air Valve ..MBN34AA051 Open FO Return ESV ..MBN52AA051 Close FO Return CV ..MBN53AA151 Close

Step 55 : * Feed back to SGC Gas Turbine that SGC FO is Shut Down