Fuel system of HFO Plant

B Y
M D . A B U S U F I Y A N
S R . E N G I N E E R
E C P V C H I T T A G O N G L T D
FUEL OIL SYSTEM

 LIGHT FUEL OIL (LFO)
 HEAVY FUEL OIL (HFO)
Fuel Oil Used In ECPVCL

Properties of Fuel Oil
Properties Light Fuel Oil Heavy Fuel Oil
Sulphur (%) 1.8 3.5 (Max)
Ash Content (%) 0.02 0.1
Relative Density at 15 ͦC 0.86-0.90 0.991
Pour Point ͦC (Min) 3 (win)/15(Sum) 24
Kinematic Viscosity (Centistokes) 2.5 to 15.7 (@38 ͦC) 180
Water Volume (%) 0.1 0.5
Gross Calorific Value 10600 Kcal/Kg, Av 39000 Kj/Kg (Min)
Flash Point ( ͦC min) 66 60

Fuel Oil Handing System
HFO Unloading System
Storing In Storage Tank
Transfer to Day Tank
LFO Unloading System

Storage System Transfer System
HFO Storage Tank
• Total No s : 2 (101/102)
• Capacity : 5000/ 5000 KL
• Diameter : 8498 / 23986 mm
• Height : 10090/ 12070 mm
 LFO Service Tank
• Total No s : 1 (201)
• Capacity : 500 KL
• Diameter : 8497 mm
• Height : 10070 mm
 HFO Service Tank
 Total No s : 1 (103)
 Capacity : 5229117 liter
 Diameter : 8497 mm
 Height : 10070 mm
 HFO Separator
• Total No s : 2
• Capacity : 31.5 mз/hr
 Transfer Pump
• Total No :2
• RPM :1450
Fuel Oil Handing System

Fuel Oil
Handling
System
LFO Unloading
System and Storage
system
Unloading System
• Total Pump No s : 2
• RPM : 1450
• Filter No s : 2
LFO Service or Storage Tank
• Total No s : 1 (201)
• Capacity : 500 KL
• Diameter : 8497 mm
• Height : 10070 mm

Fuel Oil System
 HFO Feeding and Boosting system
 LFO Feeding & Boosting System
 Engine Fuel Feed System
 HFO Treatment system

HFO Feeding System
The engine fuel supply system
is equipped with fuel feeder
units which take suction from
HFO day tanks or LFO day tank
as selected by the change over
valve and delivers to fuel
booster unit. Feeder units are
fitted with an inter-connection
valve for emergency use.
HFO feeders pump Module:
 Feeder Pumps (1w+1st.by),
 Filters / Strainer
 PRV.
 Local alarms.
 Quick Shut Off Valve
 Manual Fuel Change Over Valve
 Pressure Transmitter / Pressure
gauge.
 Individual pump suction and
delivery valves
 Suction valve for HFO and LFO
with change over arrangement
HFO Feeding and Boosting System

HFO Feeding
and Boosting
System
The suction from HFO
day tanks or LFO day
tank as selected by the
change over valve (vo1)
and delivers to fuel
Feeder unit. Feeder
units are fitted with an
inter-connection valve
for emergency use.

HFO Feeding System Quick Shut off valve
 Quick Shut Off Valve
Air Torque
 Feeder unit pumps and quick
closing valves are controlled
from a common control panel
for feeder.
 13.2 Nm to 10 Nm.
 Control Air 5.5 to 7 bar.
 24VDC signal.
 Up to +150 ͦC.

Suction Valve Strainer

HFO Feeding
and Boosting
System
HFO Feeding System:
The feeder units which
take suction from HFO
day tanks Discharge to
line common or header.
 Feeder Pump
AURU MARINE (FINLAND)
Type: Feeder Unit
AMF-120-HFO/LFO
Serial No : 11510
Pump Capacity : 31.4 mз/hr
RPM : 1460
Manufacturing Year :2012
HYER MOTORS HFO
Designation: M001
Motor :11.0 KW
TYPE :Y2E2 160M-4
Serial No :SH533533-175

Suction Pressure Feeder Pressure

HFO Feeding
and Boosting
System
Alarm list

The main function of Feeder and Booster unit is to provide the engine(s) with fuel
oil of correct flow, pressure, viscosity and degree of purity. Our power plant is
designed for using Heavy Fuel Oil (HFO) as the main fuel. Light Fuel oil (LFO) is
used as back-up fuel.
The feeder unit feeds HFO and LFO from the fuel tanks to the fuel circulation
system. The feeder unit has separate lines for HFO and LFO. The unit includes two
feed pumps for HFO and Two feed pump for LFO. One of the HFO pumps is
normally in operation, while the other one is on standby. The feed pumps are
electrically driven screw pumps equipped with suction strainers and built-in safety
valves. Each pump motor is equipped with a cooling fan. The pumps are controlled
by frequency converters. The frequency converter regulates the speed of the feed
pump to maintain the pressure in the outlet line. To prevent under pressure or
overpressure in the system at sudden changes in the fuel consumption, the feeder
unit is equipped with overflow valves.
The feeder unit includes equipment for monitoring the pressure in the system. A
pressure switch at the outlet of the HFO pumps enables the standby pump to be
started automatically when required.

Booster Operation
 Open the HFO day tank outlet valve.
 Keep the manually operated HFO change over valve in position for HFO .
• Open the inlet valve for feeder pump
• Open the outlet valve for feeder pump
• Check that the pneumatic valve for are open.
• Open the inlet and outlet valves for booster pumps .
 Open the inlet and outlet valves for fuel oil heater. Open steam inlet valves and condensate
outlet valve.
 Open the inlet and outlet valves for auto filter. When the auto filter is in operation, the inlet
and outlet valves for manual filter will remain closed.
 Open the inlet and outlet valves for the viscometer.
 Open the instrument air supply valve
 Check that all the valves of pump & filter unit are in open positions.
 Start the Feeder pump following the operation schedule & check that the fuel pressure is 4.0
bar.
 Start the Booster pump following the operation schedule & check that the fuel pressure is 6.0
bar.
 Set the fuel oil temp. corresponding to 12-14 cSt and keep the controller auto mode.
 Switch on the auto filter, flush frequency monitor and viscometer.
 When required temperature is reached, change over the controller to “viscosity control” mode.

HFO Feeding
and Boosting
System
HFO Common Header

HFO Feeding
and Boosting
System
Heavy Fuel Oil
Booster Unit:
The purpose of the
module is to boost up
HFO pressure with the
defined viscosity and
control fuel
temperature. In this
plant its suck HFO from
Common Header of
feeder outlet and
delivering regulated
fuel to a Ring main
which is common for
every four engines.
Booster Module Specification:
Brand of Module : AURU
MARINE (FINLAND)
 Type : Booster
AMB-L-50-SS
 Serial No. :
11506,11507,11508,11509
HFO Booster pump Module:
 Booster Pumps (1w+1st.by),
 Auto Filters / Manual Filter
 Local alarms.
 Mixing Tank.
 Heat Exchanger

HFO Feeding
and Boosting
System
General arrangement

HFO Feeding
and Boosting
System
P&DI

Overview of assembly groups (exterior view I)
 1 Air tank
 2 Pressure gauge
 3 Safety valve
 4 Pressure controller
 5 Solenoid valve (flushing valve)
 6 Ball valve
 7 One-way restrictor valve
 8 Flushing valve
 9 Draining
 10 Type plate
 11 Terminal box (optional)
 12 Pressure gauge (optional)
 13 3-way ball valve (optional)
 14 Differential pressure monitoring
system
Combination Filter

Overview of assembly groups
1 Filter housing
2 Cam disc
3 Limit switch
4 Solenoid valve (pivoting
actuator)
5 Pivoting actuator
(pneumatic)
6 Upper section of housing
7 Lower section of housing
(optional)
8 Shut-off valve
Combination Filter

Overview of assembly groups (cross sectional
view)
Combination Filter
1 Vent (automatic)
2 Filter candle
3 Valve tappet
4 Candle holder
5 Plug valve
6 Change-over housing cover
7 Spacer
N1 Filter inlet
N2 Filter outlet
N3 Flushing oil outlet
N4 Heating medium inlet
N5 Heating medium outlet

Overview of assembly groups (view I))
Combination Filter
1 Wrench
2 Spring-type dowel pin
3 Cover (Bypass filter)
4 Housing cover safety device including vent
5 Seal
6 Filter element
7 Seal
8 Plug valve
9 Housing
10 Drain valve (partial draining)
11 Element support
12 Drain valve (final draining)
13 Filter heating (optional)
14 Shut-off valve
N1 Inlet
N2 Outlet
N4 Heating medium inlet
N5 Heating medium outlet

HFO Feeding
and Boosting
System
Controller
Differential Pressure
Monitoring system
Filter candles
Pivoting actuator
Flushing valves.
 The controller regulates and monitors all automatic
filter functions.
 The differential pressure monitoring system measures
the differential pressure between the filter inlet and
filter outlet. As the soiling increases,
the differential pressure in the filter also increases.
The controller processes the electrical signals from
the differential pressure monitoring
system and triggers a backflushing process when the
set maximum value is reached.
 The filter candles are cleaned automatically so that
the plant does not have to be switched off for cleaning.
 The pivoting actuator turns the plug valve so that the
flow to the soiled filter chambers is shut off and, at the
same time, the stand-by filter chamber is activated.
If the plug valve reaches the filter chamber which is to
be cleaned, the pivoting movement is stopped. The
pivoting actuator is actuated by a solenoid valve
(pivoting actuator). The limit switch monitors the
position of the plug valve.
 The pneumatically actuated flushing valve opens and
closes the flushing oil outlet at the start and end of the
backflushing phases respectively.

HFO Feeding
and Boosting
System
Automatic filter with
bypass filter: for removing
impurities from fuel oil and
indication of failures in
purification system.
Mixing tank: for mixing the
return fuel from the engines with
fresh fuel and for compensating for
temperature and pressure changes.
Booster pumps :for further
pressurizing and circulating fuel to
the engines, equipped with an
automatic.
Fuel heaters: for heating the
fuel oil to injection viscosity,
controlled by a viscometer.
Viscosity control
system: for measuring the fuel
viscosity and controlling the power
of the heaters to maintain constant
injection viscosity, secured by a
temperature controller

HFO Feeding
and Boosting
System
Booster pumps
:for further
pressurizing and
circulating fuel to the
engines, equipped with
an automatic.
Total Nos: 2
Specification:
25.5 m3/h, 4/8 bar, 20
cSt, fixed speed 2900
rpm. 11 kW,

HFO Feeding
and Boosting
System
Fuel heaters: for
heating the fuel oil to
injection viscosity,
controlled by a
viscometer.
Technical Data:
2x100 % steam heaters
of tube type, based on
steam temperature
/pressure 148 °C / 3.5
bar g.
Heat exchanged 246
kW.
Steam consumption
max. 430 kg/h
4 Flange gaskets
5 Tube insert
6 In and outlet flange gaskets
7 Steam and condens flange gaskets

HFO Feeding
and Boosting
System
Viscosity
control system:
for measuring the fuel
viscosity and
controlling the power of
the heaters to maintain
constant injection
viscosity, secured by a
temperature controller.

HFO Feeding
and Boosting
System
Quick start guide.
 Activating pump shaft seal lubrication by
Grease.
 Inspecting fuel valve positions.
 Venting suction filters.
 Inspecting instrument valves.
 Activating fuses and thermal relays.
 Starting feeder/supply pumps.
 Venting the deaeration tank.
 Checking suction and feed pressure.
 Starting the booster/circulation pump.
 Checking booster/circulation and outlet
pressure gauges.
 Adjusting viscosity
 Checking the steam regulator valve
 Testing equipment and alarms
 Starting and running the engine on HFO

HFO Feeding
and Boosting
System
Quick start guide.
Activating pump shaft
seal lubrication by Grease
• Ensure that pump has a
functional grease.
• Activate the pump
lubricator 24 hours
before starting for the
first time by turning the
switch.
If Grease is not activated
in time, it may cause the
pump shaft seals to leak.

HFO Feeding
and Boosting
System
Quick start guide.
Inspecting fuel valve
positions
• Ensure that the
heating media is not
turned on.
• Open the required fuel
valves according to the
PI diagram.

HFO Feeding
and Boosting
System
Quick start guide.
Venting suction filters
• Open the venting
screw and ensure that
the oil is flowing.
• The suction pressure
gauge should read > 4
bar (usually 03 –04
bar).
Remember to vent
all suction filters
and then close them
after venting.

HFO Feeding
and Boosting
System
Quick start guide.
Inspecting instrument
valves
• Open the air valves and
ensure that there is
adequate air pressure .
• Check the automatic
filter air pressure
gauge to see whether the
air pressure rises
to approximately 4 bar.
(Note! Not all filter
models come with a
pressure gauge.)

HFO Feeding
and Boosting
System
Quick start guide.
Activating CB and thermal
relays
• Ensure that the main switches are
set to zero – otherwise, the
cabinets will not open.
• Activate the electrical cabinet
fuses and thermal relays .
• Ensure that the drive switches are
set to zero .
• Turn on the power with the main
switch.
• Reset the alarms. Ensure
that all drive switches are set
to zero before switching on
the main power.
After resetting, one of the
alarms may still be active –
this is normal. The lights
should go off when the unit is
started.

HFO Feeding
and Boosting
System
Quick start guide.
Starting Feeder Pump.
•Ensure that HFO is
flowing into the pump.
• Test run the electric
pumps. Ensure that the
motors are rotating in the
right direction. If the
rotation direction is wrong,
contact an electrician.
• If the rotation direction is
right, leave one of the
pumps running.
Ensure that the electric
motor is rotating in the
right direction (always
clockwise). Never run the
pump ”dry”.

HFO Feeding
and Boosting
System
Quick start guide.
Venting the
deaeration tank.

HFO Feeding
and Boosting
System
Quick start guide.
Checking suction and
feed pressure
• Bleed all gauges by
turning the yellow tip.
• The suction side
pressure should drop to
approx. 0 bar (Figure 1).
• The feed pressure
should rise to 3 – 5 bar
(Figure 2).
• If the connections are
wrong, the feed pressure
gauge (Figure 2) will not
display any values.

HFO Feeding
and Boosting
System
Quick start guide.
Starting the
booster/circulation
pump.
• Ensure that oil return
circulation is allowed to the
unit deaeration tank.
• Test run the electric
pumps. Ensure that the
motors are rotating in the
right direction. If the
rotation direction is wrong,
contact an electrician.
• If the rotation directions
are right, leave one of the
pumps running.
Ensure that the electric
motor is rotating in the
right direction.

HFO Feeding
and Boosting
System
Quick start guide.
Checking
booster/circulation and
outlet pressure gauges.
• Vent the unit’s external fuel
system.
• The ship’s diesel engine fuel
feed pressure should be the
same as the unit’s outlet
pressure.
• Also ensure that the fuel flow
returns to the unit.
Outlet pressure is adjusted with
the pressure regulator valve
located outside the unit, not the
pump relief valves! Turn the
switches for feeder and booster
pumps being shut down to the
standby position.

HFO Feeding
and Boosting
System
Quick start guide.
Adjusting viscosity
• Activate the
viscometer on the
control panel (1) and
select Adjust viscosity
(2).Also turn on the
automatic filter (3).
• Check the display to
ensure that the viscosity
is 13 cSt.
There is a 5 – 15 min
time delay between
manual flushing of the
automatic filter!

HFO Feeding
and Boosting
System
Quick start guide.
Checking the steam
regulator valve
• Ensure that the steam
regulator valve is closed or
the electric heaters are
switched off.
• Ensure that the heat tracing
valves are closed or electric
tracing is shut off.
• If the regulator valve is
open, contact an electrician,
who will switch the feed
phases.
• Temperature regulation is a
safety function, which is only
available with HFO.
Heat tracing must not be on

HFO Feeding
and Boosting
System
Quick start guide.
Testing equipment
and alarms.
• Test equipment and
alarms.
• Test functions
according to the alarm
panel; also test remote
control.
• Also ensure that the
alarms are being sent to
the engine control
room.

HFO Feeding
and Boosting
System
Quick start guide.
Starting and
running the Heat
Tracing
Ensure that heat tracing
is on for unit outlet and
inlet pipelines.

LFO Feeding
and Boosting
System
A common module of
two different units, one
for Feeding HFO and
other for Feeding LFO
from Service tank to
Common Header. It can
maintain desire
pressure and flow at
delivery with sufficient
protection. Plant
emergency shutdown
system included with
this unit.
LFO Feeder Module Specification:
Brand of Module : AURU MARINE (FINLAND)
Type : Feeder Unit, AMF-120-HFO/LFO
Serial No. : 11510
Manufacturing Year: 2012
Pump details (LFO) :
Brand : HYER MOTORS LFO
Designation : M005 & M006
Type : MS 132S2-2
Serial No. : SH530289526 & SH530289531
Power ratings : 7.5KW, 415V, 50Hz, 2900rpm.

Engine Fuel
Feed System
Fuel Feed System for
Individual Engine
Fuel Change-Over
Module
 The purpose of the module is to interchange engine inlet fuel in
between Diesel and HFO. The process of this changing is fully
automatic. The unit is consist of following items-
• Change Over Unit -005-HFO:
 Type : MS-90L-2
 Power : 3p, 2.2KW, 440V,
50Hz.
 Ins. Class : F
 IP : 55
 HFO pump capacity 6,05 m3/h, 5/8 bar, 12 cSt
 Manuf. Year : 2011
 Weight : 16.2 Kg
 Electric motor 2,2 kW, 2900 rpm
 Bearings : D.E-6206 , NDE- 6204
• Change Over Unit -006-LFO:
 Type : M6906-2
 Phase : 3p, 1.5KW, 2780rpm.
 Ins. Class : F
 IP : 55
 DFO pump capacity 7,41 m3/h, 5/8 bar, 7 cSt
 Electric motor 1,5 kW, 2900 rpm
 Weight : 16.2 Kg
 Bearings : D.E-6206 , NDE- 6204

Engine Fuel
Feed System
Quick start guide.
Fuel Change-Over
Module.
P&ID

Engine Fuel
Feed System
Fuel Change-Over
Module.
Section View of
Screw Pump.

Engine Fuel
Feed System
Flow Meter
Each Revolution of
wheel oval displaces a
precisely know as
volume of liquid
through the meter,
from inlet to outlet.
The number of
revolutions therefore
is directly
proportional to the
measured volume.
During operation the
sensor generate and
transmit pulse signal
to indicates etc.

Engine Fuel
Feed System
Fuel Fine Filter
The Fuel fine filter is
duplex type with a
manual change over
valve. Depth type filter
cartridge, 7-10 micron
nominal.
 Specification:
 Type : HFO/LFO Duplex fine
filter 709152 FF-10
 Type/Drawing : 1027643
 Press. max./min. : 16/0 bar
 Test Pressure : 24 bar
 Temperature max./min. : 150°C
 Volume : 220 Ltr.
 Manufacturer : Pumplohja Corporation

Engine Fuel
Feed System
Fuel Injection Pump
Cleaning System
Nozzle Temperature
control system
104 DO Valve
 FIPCS: The function of the unit is to
clean the fuel injection pumps. The
control sleeves/racks are washed with
diesel oil at regular intervals, to prevent
sticking. Including air driven pump,
solenoid valve and air filter.
 NTC: Nozzle temperature control
system: The nozzle temperature control
excluding tanks system is an internal
system on the Engines.
 104 DO valve: The purpose of the three
way valve is to restrict the mixed oil
(HFO+LDO) from entering into Diesel
Service tank during engine fuel
changeover process.

HFO
Treatment
system
HFO treatment plant
comprises of fully
automatic, self cleaning
centrifuge system. It is
suitable for treatment
Heavy fuel of viscosity
up to 180cst at 50°C
and density 0.96 at
15°C.
The unit collect raw oil
from storage tank and
deliver treated oil to
service/day tank.
 Specification of HFO Separator
Number of Unit : 2 Nos
Separator type : S 986
Serial no : 4211076 & 4211077
Year : 2011
Product No : 881207-06-01
Inlet and outlet : 564743-01
Bowl : 593650-01
Machine bottom part : 595374-01
Designation : PX213UFT-21
Belt driving device : 566201-01
Max. Speed : 5270 rpm
Direction of Rotation : Counter-clockwise.
Speed motor shaft : 3000 /min
El. Current frequency : 50 Hz
Rated motor power : 31 KW
Max. Density of feed : 1100 Kg/m3
Max. Density of sediment : 2014 kg/m3
Max. Density of liquid : 1000 kg/m3
Process temp. min/max : 0/100 ◦C

Fuel system of HFO Plant

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