LNG Steam Simulator Exercise

009. Run the Simulator to Prepare HFO Systems for Changing Over from DO to HFO

[Load Snapshot "Ex_009_LP_Stm_Gen_ON_Prepare for HFO Burning"]

- Asssume scenario as described below [but check to confirm] and then follow the given procedures

Electrical Power:-

Shore Power:Off; Emergency Generator:Auto Stand-by; Both Turbo Generators:Off; Diesel Generator:On

Deaerator:-

Full with guage glass reading between 60~70 mm

Both Boilers:-

Both boilers firing on DO. Both Boiler Press - aboout 6 Mpa; Desuperheated steam is available.

Distilled Water Tank (DWT) & Atmospheric Drain Tank (ADT):-

Both DWT & ADT about full (at least above 60%).

>> Procedures for preparing HFO systems prior to changing over from DO to HFO:-

FO Service:
1 Open both HO Settling Tank steam heating valves.
2 Open the FO Heater steam inlet valve to the FO Heater regulator.
3 Open the FO Heater steam outlet valve to the FO Heater regulator.
4 Ensure the FO Heater steam Regulator bypass is closed.
5 Check the temperature of the HO Fuel in the FO Heater rises.
6 Open a high or low HO Settling tank valve (Depending on HO level).
7 Open suction and discharge valves for both FO Supply pump 1 and 2.
8 Open FO Pressure Regulator inlet and outlet cutout valves.
9 Ensure the FO Pressure Regulator bypass is closed.
10 Open the FO Heater FO inlet valve.
11 Open the FO Heater FO outlet valve.
12 Ensure the FO Heater bypass is closed.
13 Open the FO Flow meter inlet valve.
14 Open the FO Flow meter outlet valve.

NOTE:

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