I. INTRODUCCIÓN
1.3 Teorías relacionadas al tema
Any tank containing oil or other volatile substance (such as gas generated by sewage decomposition) must be vented to a safe position. Explosive gases must be liberated to atmosphere through an element which will prevent the flash back of flame, should the gases or vapours ignite after release. These elements should be checked at intervals to ensure that they are correctly in position and are not damaged. Any damage must be reported and the element changed immediately.
All lines connecting tanks to the release vent or the vent/oil mist box must be clear without obstruction to flow.
The oil mist box located in the funnel has vent line connections from the main engine crankcase and from the generator engine crankcases.
Individual gooseneck vents are fitted to the LO storage and settling tanks.
2.7 fuel oil and diesel oil transfer systems
2.7.1 fuel oil and diesel oil bunkering and transfer system 2.7.2 fuel oil and diesel oil separating system
Maersk Seletar Machinery Operating Manual
No.7 Cargo
Hold No.6 Cargo
Hold
No.5 Cargo Hold HFO TankNo.6
(Port)
LSHFO TankNo.6 (Inner P)
HFO TankNo.6 (Inner S) CI
PI
From Fuel Mixing Unit
F-9V
From Main Engine Leakage Line
Marine Diesel Oil Storage Tank
(283.5m3)
Illustration 2.7.1a Fuel Oil and Diesel Oil Bunkering and Transfer System
Key
Heavy Fuel Oil Marine Diesel Oil Compressed Air Steam Condensate Waste Oil / Drain Marine
Diesel Oil Service
Tank
(162.4m3) F-66V F-83V LS
To Oily Bilge Tank (Dirty Side)
Fuel Oil Overflow
DO-02 FO-06
DO-04 FO-08
DO-03 FO-07
DO-01 FO-05
FO-04
F-61V F-62V F-31V F-32V
F-63V
Heavy Fuel Oil / Marine Diesel Oil Transfer Pumps (92m3/hx3.0kg/cm2)
No.2
A Deck
A Deck Heavy Fuel / Marine
Diesel Oil Filling
Heavy Fuel / Marine Diesel Oil Filling
F-18V FO-03
FO-02 From Fuel Oil
Backflush Filter
HFO TankNo.6 (Starboard) Pipe Tunnel
TIAHMC TX
TIAHMC TX
TIAHMC TX
Low Sulphur Heavy Fuel Oil Service Tank (188.3m3)
Low Sulphur Heavy Fuel Oil Settling Tank (157.1m3)
To Fuel Oil Separators
From Fuel Oil Separators From Fuel Oil
Separators
F-34V
To Fuel Oil
Separators To Fuel Oil
Separators
No.7 Cargo
Hold No.6 Cargo
Hold Engine Room
(1720.6m3)
TIAHMC F-16V F-7V TX
F-6V F-17V
Heavy Fuel Oil Service Tank (157.6m3)
Heavy Fuel Oil Settling Tank (157.6m3)
Maersk Seletar Machinery Operating Manual
2.7. fueL oiL and dieseL oiL transfer systeMs
2.7.1 fueL oiL and dieseL oiL bunkerinG and transfer systeM
heavy fuel/ Marine diesel oil transfer pump Manufacturer: Taiko Kikai Industries Co. Ltd.
No. of sets: 2
Type: WLS-100MB
Capacity: 92m³/h at 3.0kg/cm²
introduction
Heavy fuel oil, for the main engine, generator engines and boiler, is stored in deep tanks located forward of the engine room in No.6 hold. Three of these tanks, No.6 starboard outer, No.6 starboard inner and No.6 port outer are used for HFO but No.6 port inner is designated for use by low sulphur HFO (LSHFO). The bunker tanks are filled through dedicated connections at the port and starboard bunker stations which are located on A deck at the forward pressure of ?????? kg/cm2, with the discharge flowing into the FO overflow tank.
The HFO/MDO transfer pumps are used to transfer fuel oil from the bunker tanks to the settling tanks. No.1 HFO/ MDO transfer pump may be used for transferring HFO between the HFO bunker tanks or discharge to the deck bunker connections if required. Bunkering and FO transfer is controlled from the FO mimic panels in the engine control room and ship’s control centre.
Discharge valves on the HFO/MDO transfer pumps allow delivery to the settling tanks or to the bunker main. From the bunker main individual tank filling/suction valves allow the individual bunker tanks to be filled as required.
There are separate lines leading to the port and starboard pairs of bunkers tanks. This permits oil to be transferred from port to starboard or vice versa.
The bunker tank filling/suction valves are of the remotely operated type.
The HFO/MDO transfer pumps are used for transferring oil from the FO overflow tank to the bunker and settling tanks. Fuel oil is transferred from the HFO (or LSHFO) bunker tanks to the HFO settling tank (or LSHFO settling tank) as required and the contents of the settling tank is transferred to the associated service tank by the HFO separators. settling and service tanks are provided with remote level and temperature indication in the engine control room; there are high level and high-high level alarms in all fuel oil tanks. All HFO tanks are fitted with heating coils, the heating steam being supplied at 6.0kg/cm2 from the main steam system.
Condensate from the heating coils flows to the dump condenser/drain cooler and then to an inspection tank before entering the feed filter tank. All FO transfer lines are trace heated by steam also at 6.0kg/cm2.
heavy fuel oil tanks
Compartment Capacity (sG 0.990)
100% (m3) 98% (tonnes)
No.6 starboard outer (HFO) 2,190.9 2,125.6
No.6 starboard inner (HFO) 1,720.6 1,669.6
No.6 port outer (HFO) 2,190.9 2,125.6
No.6 port inner (LSHFO) 1,720.6 1,669.6
HFO settling tank 157.6 152.9
HFO service tank 157.6 152.9
LSHFO settling tank 157.1 152.4
LSHFO service tank 188.3 182.7
total hfo Capacity on board 8,483.6 8,231.3