Marine Installation Manual
2022-03
4-80
4 Ancillary Systems
4.7 Fuel oil system
X62DF-S2.0
4.7.2
Fuel oil system with only MDO/MGO or MGO
If the main engine is designed for only MDO/MGO or MGO fuel oil, the system
may be simplified in comparison to the conventional system specified in section
.
The changes are as follows:
•
The fuel oil mixing unit is omitted.
•
The fuel oil end-heater is omitted, along with the associated viscometer and
control logic.
•
The simplified fuel oil filter arrangement like that in arrangement 'B' is ap
-
plied.
Additional optional changes:
•
The feed pump and booster pump can be replaced with a single delivery
pump. If this option is selected, the pump must be located in the recircula
-
tion piping and must not be too high relative to the fuel oil tanks (see (
)H
in
). This must be in accordance with manufacturer’s specifica
-
tion.
Figure 4
-
50 Fuel oil system
—
Arrangement with only MDO/MGO or MGO
NOTE
The omission of iCAT may occur with engines specified to operation on
liquid fuel with a sulphur content up to 0.10% (ultra low sulphur). Please
SM-0518
Main
Engine
FM
1
2
V
1 MDO service tank and supply system
2 MGO service tank
3 Fuel changeover valve
4 Flow meter
5 Delivery pump
6 Fuel oil heat exchanger
7 Viscometer
8 Automatic self-cleaning filter
3
4
5
6
7
8
MDO/MGO piping
Common piping
MDO
MGO
PLFURQV
LT Cooling
water system
