Lube Oil Storage and Transfer (OS)

Question 1

What is the purpose of the OS system?

Answer 1

Remove contaminants from the Main Turbine Lube Oil and Feedwater Pump Turbine Lube oil to maintain the required lube oil quality

It also provides lube oil storage for makeup and storage during outages

The system also transfers/recirculates lube oil from the storage tanks to the Main Turbine Lube Oil Reservoir and Feedwater Pump Turbine Lube Oil Reservoirs and between the reservoirs and the lube oil centrifuge or conditioner

Question 2

What is the capacity of the LO storage tanks?

Answer 2

20,000 gallons

Question 3

What does Domestic Water system provide for OS?

Answer 3

Seal water to the OS system Feedwater Pump Turbine Lube Oil Centrifuge through a priming funnel

Question 4

What powers the OS system centrifuge and condition and LO Transfer Pump?

Answer 4

NH

Question 5

What does IA do for the system?

Answer 5

Provides air to the OSHA cover interlock control panel pressure instruments

Question 6

Where are the Lube Oil Storage tanks located?

Answer 6

North Yard

Question 7

Which tank can I send “dirty” oil to?

Answer 7

‘B’ Lube Oil Storage Tank

Question 8

How are the Storage Tanks sized?

Answer 8

To hold the entire contents of both lube oil subsystems plus a contingency for oil in the process piping

Question 9

Where is the Lube Oil Transfer Pump located?

Answer 9

Next to the Lube Oil storage tanks in the north yard

Question 10

What type of pump is the Lube Oil Transfer Pump?

Answer 10

Rotary gear

Question 11

How is the pump operated?

Answer 11

Manually from a local hand switch

Question 12

What is the purpose of the MTLO Conditioner?

Answer 12

Removes water and particulates form the Main Turbine Lube Oil by filtering action

Question 13

At what rate can it purify the LO?

Answer 13

30 gal/min or about 20% per hour of Main Turbine Lube Oil normal operating capacity (11,000 gallons)

Question 14

Concerning the Main Lube Oil conditioner, which filter has a sight glass?

Answer 14

Filter #2

Question 15

At what rate is the FWPT Centrifuge capable of purifying oil?

Answer 15

5 gpm which is equivalent to approximately 15% per hour of the combined operating capacity of the two lube oil reservoirs (about 2000 gallons)

Question 16

What would cause the MFPT lube oil centrifuge package alarm bell to sound?

Answer 16

If one of the following occurs:
- The bowl loses its water seal, which 
  causes a large flow of oil through the 
  heavy phase outlet
- Sudden large flow of water flows 
  through the heavy phase outlet caused 
  by a possible cooler tube leak

Question 17

What is the purpose of the OSHA interlock?

Answer 17

Automatically stops the centrifuge and alarms if the cover to the centrifuge is opened or if the cover clamps are loosened during centrifuge operation

The interlock also prevents starting the centrifuge if the cover is open

Question 18

In general, how does eth MTLO conditioner clean LO reservoir?

Answer 18

Uses a series of filters and a coalesce/separator

Question 19

How do we discard oil?

Answer 19

A waste oil tanker truck can hook up to the storage tank and the dirty oil be pumped to the truck for discarding