Main Lube Oil Service, Fill and Transfer System

Question 1

What are the system componets of the Lube Oil System

Answer 1

1. 1 L/O sump per MRG
2. 3 Positive Displacement LOSP
   a. 2 Electric Motor Driven LOSPs that are vertically Mounted
   b. One Attached mechanically driven LOSP, driven by the MRG. Adequate Supply above ~ 116 Shaft RPM.

Question 2

What is the L/O Attached Service Pump rating?

Answer 2

693 GPM at 168 SRPM at 75 PSIG

Question 3

What is the L/O Electric Pump Rating?

Answer 3

318 GPM slow at 100 PSIG

560 GPM fast at 100 PSIG

Question 4

What Regulates the L/O Temp?

Answer 4

Three way regulating valve

Question 5

What type of cooler is the L/O cooler?

Answer 5

A Shell and tube type heat exchanger using seawater as the Medium.

Question 6

What are the L/O Pump Logics?

Answer 6

1. Normal L/O header pressure is 14.5 PSIG
2. 13 PSIG - Lead Electric cycles to Slow
3. 11.5 PSIG - Lead Electric cycles to fast
4. 10 PSIG - STBY Electric cycles to fast
5. Pumps will not stop if loss of L/O Pressure

Question 7

What is the Rating for the LOFSP?

Answer 7

500 GPH at 100-170F

Question 8

What are the capabilities of the LOFSP?

Answer 8

1. Purify MRG Sump
2. Purify the CRP Sump
3. Purify L/O settling tanks
4. Purify L/O Storage tanks
5. Transfer L/O to and from Sumps, tanks.
6. Transferring L/O to/from MER to MER

Question 9

What is Batch Purification?

Answer 9

1. Striking L/O from Sump to settling tank.
2. L/O is heated to 160F and kept in the tank for 24 hrs
3. Water and Sediment settle in the bottom and then are stripped. Rest of the Oil is restored.

Question 10

How many L/O storage tanks are there

Answer 10

Three tanks in MER1 holding 1300 gal

Three in MER2 holds 1100 gal

Each holds approx 1300 gals

Question 11

MRG Sump Capacity

Answer 11

MER1: 2469
MER2: 2273

Question 12

MRG Normal Sump Capacity

Answer 12

1700-1750 Gal

Question 13

MRG Sump Low Level Alarm

Answer 13

1400 Gal

Question 14

MRG Sump High Temp

Answer 14

130F

Question 15

MRG Sump Low Temp

Answer 15

90F

Question 16

What is the min shaft RPM to support attached pump

Answer 16

116 SRPM

Question 17

MRG Pump low discharge pressure alarm

Answer 17

35psi

Question 18

MRB Low Pressure Alarm

Answer 18

8 PSI

Question 19

MRB High Pressure Alarm

Answer 19

20 PSI

Question 20

MN Thrust BRG Press Low Alarm

Answer 20

4 PSI

Question 21

Normal DP for L/O Filter

Answer 21

6 PSID

Question 22

High DP L/O Alarm for Filter

Answer 22

12 PSID for 5 second

Question 23

Three way temp low alarm

Answer 23

120 F

Question 24

Three Way Temp High Alarm

Answer 24

130 F

Question 25

Settling tank heater

Answer 25

8Kw 90F to 160F in 5 hours