LNG Steam Simulator Exercise


017. Run the Simulator to Start Main Propulsion Turbine

[Load Snapshot "Ex_017_Changing Over from DO to 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; Turbo Generators:One on load and the other off; Diesel Generator:On Load

Deaerator:-

Full with guage glass reading between 60~70 mm

Both Boilers:-

Both Boiler Press - aboout 6 Mpa; Both boilers are running on HFO supply.

Condenser:-

Condenser Vacuum is Satisfactory and Cooling on

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

Both DWT & ADT about 60% full.

>> Procedure to run the Main Turbine using the Telegraph/Throttle:-

Main Condenser:
1 Check the vacuum not in alarm condition
Stbd. Boiler:
2 Check drum Pressure is not in alarm condition
Port Boiler:
3 Check drum Pressure is not in alarm condition
LO + Purifier:
4 Check the Gravity tank is sufficiently full
Turbines and Feed:
5 Close the Manual Throttle (Ahead) valve
6 Close the Manual Throttle (Astern) valve
The hand wheel throttles must be fully closed or the throttle hydraulic pump will trip
Main Distrib:
7 Close Throttle Boost pump Circuit breaker
8 Close the Circuit Breaker for Steering Gear #2
Emerg Distrib 9 Close the Circuit Breaker for Steering Gear #1
10 Close the Circuit Breaker for Navigational Aids
Telegraph Student / Telegraph Instructor:
11 Check Engine Room (Control) is illuminated. If Bridge control is selected then use the Instructor (Bridge) Telegraph together with the student(Engine Room Telegraph) to establish Engine Room Control.
12 Move both control levers to the Stop position.
Cooling:
13 Open Main LO Cooler inlet and outlet valves
LO + Purifier:
14 Open LO Throttle hydraulic boost pump inlet and outlet valves.
15 Check Throttle trips (shortcut)
16 All throttle trips not be illuminated
17 If a trip light is illuminated eg."Boiler Pressure Low" and the boiler pressure is infact normal then the throttle trip reset will be required.
18 Set the "Throttle Operating Mode" to Manoeuvre - this mode automatically opens/closes the cascade valve (HP to IP) and the HP to HP Regulator Valvewhen required and improves the overall efficiency of the plant
19 Throttle trips are reset by clicking the Throttle Hydraulic Pump and then clicking "Reset"on the pump control at the bottom of the screen
20 Start the Throttle Hydraulic Pump. Note the Throttle hydraulic pump will not start if any trip is illuminated.
21 Note the accumulatorfills with oil and the pump pressure rises
22 Hydraulic oil is now available to operate to the main throttle valves (ahead or astern) via the EOT
Note: The Throttle pump trip will only reset if the throttle lever is set to the stop position
Stbd. Boiler
23 Open Main Steam Stop Valve
Port Boiler
24 Open Main Steam Stop Valve
T/bines and Feed:
25 Open stbd and port bulkhead valves
Telegraph (popup)
26 Start Steering Gear #1
27 The left lever is the telegraph and the right lever is the throttle control
28 Drag the right lever up to 'Dead Slow'. The HP inlet pressure and shaft RPM will increase as a consequence.
29 Gently move throttle to 'Full'
Main Bearings
30 Run up to approximately 95 RPM (about 28000 SHP)

NOTE:

1) Check Knowledgebase - .........