The document summarizes the fuel oil and drainage systems at APML. It describes the two types of fuel oil used - light diesel oil (LDO) and heavy fuel oil (HFO) - and provides details on their properties, storage, transfer, and boiler systems. It also outlines the drainage system for collecting and separating oil and water from the fuel systems.

1. Fuel Oil System
By
Vineet Garg
Deputy Manager(Operation)

2. Fuel oil used in APML
Light Diesel Oil(LDO)
Heavy Fuel Oil(HFO)

3. Properties of Fuel Oil
Properties Light Diesel Oil Heavy Fuel Oil
Sulphur(%) 1.8 4.5
Ash Content(%) 0.02 0.1
Relative Density at 15 oC 0.86-0.90 0.9782
Pour Point (oC max) 3(winter)/15(summer) 24
Kinematic Viscosity (centistokes) 2.5 to 15.7 (@ 38oC) 370 (@50 oC)
Water(Volume %) 0.1 1.0
Gross Calorific Value(Kcal/Kg,avg) 10600 10800
Flash Point(oC min) 66 66

4. Fuel Oil Handling System
 Unloading through Unloading Pumps
 Storing in Storage Tanks
 Transferring to Day oil Tanks

5. HFO Handling System
Storage System Transferring System
 HFO Storage Tank  HFO Day oil Tank
 Total No.s :2  Total Nos :2
 Volume : 3000 m3  Volume : 200 m3
 Diameter : 19.0 m  Dimeter : 7.5 m
 Height : 12.0 m  Height : 5.5 m
 HFO Unloading Pump :  HFO Transfer Pump
 Total No.s :3  Total No.s :2
 Capacity : 50 m3/h  Capacity : 55 m3/h
 Head : 35.0 MLC  Head : 18 MLC

6. 100 m3/hr, 35 oC HFO Handling System
HFO
Storage HFO
Tank 1 Day Tank
3000 m3 1
200 m3
FT
HFO
Storage 4x100% 2x100% HFO HFO
Tank 2 Strainer transfer pump Day Tank
3000 m3 2
6x100% 3x50% HFO 200 m3
Strainer Unloading Pumps
10 neoprene rubber
Unloading hoses

7. Boiler HFO System
 HFO Pressurizing Pump  HFO Cooler
 Flow：57m3/h  HFO Flow：55m3/h
 Head：330mH2O  inlet oil temperature : 120℃
 Outlet oil temperature :70℃
 HFO Heater
 HFO Flow：55m3/h
 Drain Oil Tank
 Inlet oil temperature：70oC
 Capacity：5m3
 Outlet oil temperature: 120℃
 Coarse Filter  Drain Oil Pump
 Flow：55m3/h  Flow：10 m3/h，
 100meshes/in2  Head：48 mH2O
 Condensate Flash tank: 6 m3

8. Boiler HFO System
FT
HFO
Day BC Elevation
Tank 1
200 m3
PCV
HOTV
Auxiliary steam
HFO
Day Tank Fine Filter
FT
2 Coarse filter HFO Pump To drain flash
200 m3 Condenser
HORV
Auxiliary steam
Cooling Water
From CCCW Pump
HFO Heaters
PCV

9. HFO System Interlocks
S.No. Equipment Set Points
1 HFO Unloading pump pr. High 3.7 Kg/cm2
2 HFO Unloading Pump Disch Pr. Low 0.5 Kg/cm2
3 HFO Tank level 11.56 HH,11.46 H,
0.96 L,0.86 LL
4 HFO Storage oil Tank Temperature 37oC H,33oC L
5 Suction pipe outlet/ Day Tank Temp. 60oC(L) to 70oC(H)
6 HFO Transfer pump Disch Pr. High 2.5 Kg/cm2
7 HFO Transfer pump Disch Pr Low 0.5 Kg/cm2
8 Day tank level 5.155 HH, 5.055 H,
0.305 L,0.205 LL
9 Differential Pr across Strainer High 0.2 Kg/cm2(unloading strainer) /
0.1 Kg/cm2(Transfer strainer)

10. LDO Handling System
Storage System Transferring System
 LDO Storage Tank  LDO Day Tank
 Total Nos : 3  Out of 3 storage tank 2
tanks can be used as LDO
 Volume : 700 m3
day oil tank with
 Diameter : 10.5 m arrangement of inter
 Height :9m transfer.
 LDO Unloading Pump  LDO Transfer Pump
 Total Nos : 3  Total Nos : 2
 Capacity : 50 m3  Capacity : 21 m3
 Head : 25 MLC
 Head : 20 MLC

11. LDO Handling System
5 neoprene rubber LDO
Storage
Unloading hoses
Tank 1
700 m3 4x100%
Strainer
100 m3/hr
FT
LDO
Storage
Tank 2
700 m3
6x100% 3x50% HFO
Strainer Unloading Pumps
LDO
Storage
Tank 3
700 m3

12. Boiler LDO System
 LDO Coarse Filter
 Flow：21m3/h
 100 meshes/in2
 LDO Pressurizing Pump
 Flow：21m3/h
 Head：360mH2O

13. Boiler LDO System
FT
LDO
Day Tank 1
BC Elevation
700 m3
PCV
LOTV
LDO
Fine Filter
Day Tank 2 Coarse filter LDO Pump FT
700 m3
LORV
Compressed Air
LDO storage
Tank 700 m3
PCV

14. LDO System Interlocks
S.No. Equipment Set Point
1 LDO Unloading pump pr. High 2.1 Kg/cm2
2 LDO Unloading Pump Disch Pr. Low 0.5 Kg/cm2
3 LDO Tank level 8.55 HH, 8.45 H,
0.45 L , 0.35 LL
4 LDO Storage oil Tank Temperature 38oC H,33oC L
6 LDO Transfer pump Disch Pr. High 3.0 Kg/cm2
7 LDO Transfer pump Disch Pr Low 0.5 Kg/cm2
9 Differential Pr across Strainer High 0.1 Kg/cm2(unloading strainer) /
0.15 Kg/cm2(Transfer strainer)

15. FOPH Drainage System
 Drain oil Tank  Oil and Water Separator Pit
 Capacity: 5 m3  Recovery oil Punp
 Drain oil pumps  Total no.s : 2
 Total no.s :2  Capacity: 10 m3/h
 Capacity : 10 m3/h  Head : 36 MLC
 Head : 48 MLC  Waste Water Pump
 Oily water pump  Total no.s : 2
 Total no.s :2  Capacity : 20 m3/h
 Capacity :10 m3/h  Head : 35 MLC
 Head : 16 MLC  Condensate Flash Tank
 Capacity : 6 m3

16. Fuel oil pump house Drainage System
From HFO heaters, tank trace heaters, line trace heaters aux steam drain
To HFO Storage Tank
local area drain
For reusing to
Drain oil
pumps
Drain oil from HFO system pumps and strainer
HFO Drain oil Tank
Capacity(10 m3)
Drain oil from LDO system pumps and strainer
Aux steam drain to flash tank
Recovery oil Waste water
pumps pumps
Oily water
pumps
Flash
FOPH Drain pit Oily water from tanker
Stilling
Baffel wall to prevent oil
escape Tank
Capacity(10 m3) unloading, Storage tank
Chamber oil
dyke Oil & water separator tank

17. Drainage system interlocks
S.No. Equipment Set Point
1 Radar type Drain Tank level transmitter 0-1.5m
1.2m H
0.6m L
2 Pressure indicator at discharge of each pump 0 to 6 Kg/cm2
3 Pressure Switch at discharge of each pump Low 0.5 Kg/cm2
4 Pressure Switch at common dich. Header Low 0.5 Kg/cm2
5 Temperature Transmitter 0-120 oC
32 oC L
38 oC H
6 Solenoid Valves at steam inlet of floor coil heater Air fails to close type

18. Thank you