LCC20 114: Main Engine

Question 1

High Pressure Turbine

Answer 1

made by General Electric, 8 Reactive Stage. steam is converted into mechanical energy. High Speed, Low Torque. J3P Turbine.

Question 2

Low Pressure Turbine

Answer 2

made by GE. 6 Reactive Stage ahead, 2 impulse stage astern. Low speed, High torque.

Question 3

Main Condenser

Answer 3

Condenses the Steam back into water. Cooling medium is Seawater provided by the scoop.

Question 4

Main Circulating Pump

Answer 4

Steam driven propeller type pump used to provide seawater to the main condenser when ship is below 8 knots. can be used to de-water a space and a MAX of 5000gpm

Question 5

Guarding Valves

Answer 5

Isolates main steam from HP and LP turbines prior to the throttle valves.

Question 6

Ahead Throttle Valve

Answer 6

Remote hand wheel located in the EOS. Controls amount of main steam admitted to the HP turbine.

Question 7

Astern Throttle valve

Answer 7

Remote hand wheel located in the EOS. Controls amount of main steam admitted to the LP turbine.

Question 8

Thrust Bearings

Answer 8

Prevents axial movement of the turbine rotors. Kingbury type.