This section will
enable the student to visualize the components in the ALCAP fuel oil system
click on the components to jump to each component emergency stop button this
should be used in the event of high vibrations heat back power unit this
contains the main fuses and the contactors which are controlled from the
EPC separator and pump starter the starter is used to start the separator
and the pump EPC 400 supervision and controller the EPC 400 is a
microprocessor based supervision and control unit for the separator it also
contains a proportional and integral action P and R a temperature controller
for the heater header tank for operating water this tank is for the low-pressure
water which is used for closing the bowl the tank is positioned such that the
water level in the tank is between two point two and three point two meters
above the connections on the side of the separator some are cap systems do not
have a header tank MFP X 307 F opx 6:1 one water valve block both the operating
and the conditioning or displacement water are supplied from this valve block
the operating water is used for opening and closing the separator bowl and the
conditioning or displacement water is used inside the bowl solenoids are
activated by the EPC 400 al cap type separator
there is no outward difference between this separator and a conventional
purifier or clarifier of a similar size transducer MT for the purpose of this
valve is to drain separated water from the AL cap role flow indicator this is a
flow indicator and not a flow meter it gives the operator the possibility to
adjust and monitor the oil flow from the separator high and low pressure switches
and pressure gauge under normal conditions cleaned oil is
pumped from the separator by the paring disc in
the oil outlet on the top of the separator the downstream pressure
creates a positive pressure on the pressure indicator called the delivery
high pressure the back pressure regulating valve is used to increase the
pressure above this natural pressure as a guide this figure could typically be
one point five to two point zero bar the high and low pressure switches can now
be set to either side of the typical figure so as to give warnings should
there be a deviation recirculation valve v1 when the valve is de-energized oil
flows in at the side and out at the bottom it is then recirculated back to
its source the three-way valve is air activated when activated the valve
spindle and plug moved downwards allowing oil to pass through pan on to
the separator one of the main control functions of the system is to
recirculate oil away from the separator in the event of an abnormal situation
note to stop the Machine quickly during an emergency in case of vibrations oil
is allowed to flow to the separator heater the oil should be of low
viscosity prior to entering the separator this gives better separation
the recommended Inlet temperature is 98 degrees Celsius for heavy fuel oil feed
pump a positive displacement pump gear or screw type must be used a screw type
pump is a good solution strainer the purpose of the strainer is to protect
the pump from any pipe or tank debris it should be installed close to the suction
side of the pump