Main turbine lube oil system

Question 1

Bearing oil pump is used for _____.
Auto starts if bearing oil pressure decreases to ____.
____ power supply.
Receives trip signal from __ with___.
Requires ____ to be reset to restart.

Answer 1

Startup and shutdown
12 psig
ESF powered
LOOP with SI
SI

Question 2

Thrust bearing oil pressure alarm at ____ and trip at ____.

Answer 2

35# alarm
70# trip

Question 3

EOP auto starts at _____
BOP auto starts at _____
SOB auto starts at _____

Answer 3

EOP 11#
BOP 12#
SOB 12#

Question 4

Bearing lift oil pumps only run at ______ rpm and _____ suction pressure.

Answer 4

<600 RPM
>5 psig suction pressure

Question 5

Verify ____ is operating prior to ____ startup.

Answer 5

Generator seal oil
Turning gear

Question 6

If there is a_______, the generator will trip immediately on a turbine trip (no delay)

Answer 6

thrust bearing failure

Question 7

What are the three purposes of the Turbine Bearing Oil System?

Answer 7

a. Provide oil for cooling and lubrication of the TG.
b. Provide backup oil supply to the Generator Seal Oil System.
c. Provide oil to turning gear.

Question 8

What signal causes the turning gear to automatically engage and start?

Answer 8

Turbine zero speed (Automatic start/engagement has been disabled)

Question 9

The main oil pump (is/is not) self priming.

Answer 9

Is not self priming, bearing oil pump supplies pressure before startup.

Question 10

Main oil pump discharge P ____
Pump suction oil P______

Answer 10

350#
15-17#

Question 11

What constitutes lube oil purification system?

Answer 11

Turbo toc, clean oil storage tank, TDFW LO purifier