Unit 1 Main Generator Seal Oil system

Question 1

What is the normal operating pressure of the Unit 1 Main Generator Seal Oil system?

Answer 1

130#

Question 2

What is the purpose of the Unit 1 Main Generator Seal oil System Recirculation pump?

Answer 2

Pumps oil from the Seal oil tank back to the top through spray nozzles to help remove Hydrogen from the oil.

Question 3

What is the auto start of Unit 1 DC emergency seal oil pump?

Answer 3

125#

Question 4

What is the purpose of the seal oil vacuum pump?

Answer 4

To remove gases from the top of the seal oil tank.

Question 5

As Unit 1 seal oil header pressure lowers what is the order of supply?

Answer 5

Normal AC main seal oil pump.
DC Emergency seal oil pump @125#.
If turbine is in-service then the main turbine shaft driven oil pump would supply oil at 120#.
If the turbine is not in-service the seal oil would be supplied by the lift oil pumps via the bearing supply header.

Question 6

If you start the Main AC seal oil pump what will also happen?

Answer 6

The recirculation pump will start as they are controlled the same switch.

Question 7

How many seal oil cuno filters are in-service on unit 1?

Answer 7

Always 2 there is no isolation valves.

Question 8

What is the max DP on the Unit 1 seal oil filters?

Answer 8

9#