Fire there will always be a certain danger of fire when running a diesel
engine a combination of leaking fuel oil and hopped engine parts may start a fire
that can be very damaging to the engine and in some cases dangerous for the
engine crew leakages in the high-pressure part of the fuel system
may create situations where the probability of a fire increases it is of
utmost importance to undertake inspections of these parts and carry out
preventative measures against this on a regular basis Thermal hazards fuel oil
pipes may be very hot and should not be touched even though they're insulated be
aware that fuel oil pipes leading from the heavy fuel oil feeder booster module
to the engine may be steam traced when performing maintenance on the fuel oil
system remember that heavy fuel oil is very hot fewer lawyers are flammable and
should be treated with care they may also irritate skin so rinse off fuel oil
as soon as possible take note not to wear clothing that is
soaked with oil all bill Stine beragon main and auxiliary engines can be
operated on heavy fuel oil and a certain conditions which include heavy fuel oil
and lubricating oil quality and the equipment which is needed
a safely an indicator valve is fitted outside the cylinder head by means of
this valve the maximum pressure in each cylinder should be measured once a month
the measuring must be carried out with a hundred percent load on the engine log
the maximum combustion pressures and exhaust temperatures find causes and
rectify if combustion pressure in one cylinder differs more than three bar
from the average maximum at full load
abnormal change in the exhaust temperature of one cylinder is indicated
click the components for further information
the fever booster module feeds heavy fuel oil to the engines the module
consists of equipment ensuring that the fuel oil is correctly filtered and that
it will have the correct temperature and viscosity when entering the engine the
feeder booster module consists of the following main components to suction
strainers to feeder pumps of which one is a standby pump mixing pipe deaeration
vessel to boost the pumps of which one is a standby pump to fuel heaters
automatic filter with separate manual bypass filter viscosity control system
duplex fine filter
the oil temperature and oil pressure on the fuel oil outlet should be recorded
every day
the change of a valve is equipped with a switch for heavy fuel or diesel oil
operation a light indicates that the engine is running on marine diesel oil
or heavy fuel oil oil in a disconnected fuel oil system can circulate through
the valve and is thereby kept heated to correct temperature
the cock enables switching between the filter elements enabling replacement
while the engine is in operation
in addition to logging the fuel oil pressure after the filter the filter
elements have to be checked at least once a month how often they have to be
replaced depends on the fuel oil quality
make sure that the filter that is going to be dismantled is not in operation by
checking the cock position open the vent plug empty the filter housing of diesel
oil by unscrewing the plug this is not necessary for checking the element
unscrew the nuts and remove the cover
remove the filter element from the housing and check the element
wash out all oil sediments in the filter housing blow the housing clean with
compressed air
place the text in the correct sequence
wrong you have no more tries we will show you the answer
put the new filter element into the filter housing fit the cover with the
Nets then the filter by turning the vent plug one revolution until pure oil flows
out of the drain pipe connected to the nipple further venting is done by
loosening the plug until the oil is free of air bubbles assure that pipe
couplings and plugs are tightened and that there are no leakages from the
filter housing
the fuel oil injection pumps inject the correct amount of fuel into the
combustion chamber via short high-pressure pipes and the injection
valves the pumps are driven by the camshaft via the push rods and regulated
by the regulator via the link arms all engines running on heavy fuel oil are
equipped with a cleaning system for the fuel injection pumps it is of great
importance to check the control levers and fuel pump
racks weekly for sticking tightening talks for nets and high-pressure fuel
pipes must be inside the tolerance given to high tightening may lead reduced flow
of fuel to the cylinders due to narrowing of the pipes
all engines running on heavy fuel oil are equipped with a cleaning system for
the fuel injection pumps in order to prevent the control rod and sleeve from
getting dirty and sticky
the fuel injection pump cleaning system should always be operating when running
on heavy fuel oil after cleaning or overhaul of the fuel injection pumps
start the cleaning system before the pumps checks the level in the diesel oil
tank
the fuel oil injection valve should provide the injection of fuel oil to the
combustion chambers when operating on heavy fuel oil the nozzles have to be
cooled this is done by the nozzle temperature control system a nozzle
should not be disassembled for inspection or changed unless the single
cylinder exhausts temperature deviates considerably from the average please
click the graphic showing the correct behavior of the fuel injection nozzle
during injection
high exhaust temperature one cylinder may be caused by leaking valves
incorrect injection timing or a leaking nozzle the problem is easily identified
by switching to valves and observing if the problem follows the nozzle the
cooling medium in the nozzle temperature control system is oil
and nozzle should not
we circulated also when the engine is running on diesel oil the coolant
temperature must be kept within the prescribed limits to low temperature may
cause corrosion on the nozzles
clean the filter once a week by turning the handle on the filter housing the
heat exchanger uses high temperature Jacket water for cooling it is fitted
with corrosion plugs which must be checked and be replaced in case of
leakage the nozzle coolant has to be circulated also when the engine is
running on diesel oil the coolant temperature must be kept within the
prescribed limits to low temperature may cause corrosion on the nozzles click the
components for further information