U2 Generator Seal Oil

Question 1

What is the purpose of the generator seal oil system?

Answer 1

Keep hydrogen in the generator and oxygen out of the generator.

Question 2

What pressure is Air oil in comparison to machine gas pressure?

Answer 2

7# higher controlled by LRV-608

Question 3

What pressure is Vacuum oil in comparison to machine gas pressure?

Answer 3

13# higher.

Question 4

What pressure is Hydrogen oil in comparison to machine gas pressure?

Answer 4

13# higher.

Question 5

What happens if LRV-608 fails?

Answer 5

LRV-610 takes over set at 75#.

Question 6

Where does the air oil pumps take suction from?

Answer 6

Main turbine lube oil tank.

Question 7

How many Air oil pumps do we have?

Answer 7

2AC.

1DC.

Question 8

How many Vacuum oil pumps do we have?

Answer 8

1

Question 9

What cools hydrogen oil?

Answer 9

NESW

Question 10

What supplies oil to the vacuum oil pump?

Answer 10

Vacuum oil tank which is supplied by #5 bearing drain header, and the air oil excess pressure.

Question 11

What pressure is Vacuum oil in comparison to Air oil pressure?

Answer 11

6# higher

Question 12

What pressure is hydrogen oil in comparison to air oil pressure?

Answer 12

6# higher.

Question 13

What would happen if LRV-603 hydrogen oil loop seal regulating valve fails?

Answer 13

If it fails open hydrogen from the generator would leak out.

If it fails closed oil could back up in the generator.