Minimum Operation and regulations
ODME
To provide test of ODME , monitoring should by STBY mode.
Across-Running Test. Principle of test if flushing of system with the fresh water as per shown on
diagram, where working all elements of ODME . Water will take the by pump and throughout the
hydraulic valve going to Oil Content Meter and at last to slop as shown on diagram.
How to set up ODME Across-Running Test. On controller (CCR) menu , ‘’INPUT’’ bottom ‘’A’’ and if you want
to start across running test push bottom “ENTER”. Before to start see bellow procedures:
FIG1
1) Open fresh water supply ( which is in P/room)
2) Starter for Sampling Probe/pump - set position ‘’ON’’ and Key test Auto mode . FIG 3.
3) Start/push bottom on controller “ENTER” – to start testing
Watch the screen of the controller and Printer
After finish the test, push bottom ‘’SAVE’’ to stop the test. Close fresh water supply .
FIG 2
Screen will shows:
DISCHRING………………………………… PROHIBITED
SAMPLING PUMP COND …………….RUNING
VALVE CONDITION ……………………….CLOSE
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Back-flushing (flushing the system with water ) Principle of test if flushing of system with the fresh
water as per shown on diagram, where working all elements of ODME . Water will take the by pump
and throughout the hydraulic valve going to Oil Content Meter and will pass via Sample Point Valve to
Over Board Discharge Pipe ( Sampling channel 1 or sampling channel 2 over board dish. Pipe form slop
or from ballast) as shown on diagram and FIG 4.
Set up on controller, ‘’INPUT’’ bottom ‘’B’’
1) Open fresh water supply ( which is in P/room)
2) Starter for Sampling Probe/pump - set position ‘’ON’’ and Key test Auto mode
3) Open Sample Point valves . FIG 4.
4) Start -bush bottom on controller “ENTER” – to start testing . FIG 3.
Watch the screen of the controller and Printer
After finish the test, push bottom ‘’SAVE’’ to stop the test. Close fresh water supply and sample probe valves .
STARTER FOR SAMPLIN P/p FIG 3
FIG 4
FIG 4 from drawing
Calibration, Principle of test This test calibrating the sensor of the Oil Content meter with fresh water,
which dose not contain any oil components , after the several time water pass to Oil Content Meter , sensor
should be set ZERO, which means ODME is ready for use.
FIG 5
Details during Calibration of Oil Content Meter Sensor. Fresh water during calibration will pass to analyser
of “Hydrocarbon Analyser” and “Turbidity (мутность , плотность,) Analyser” FIG 5 (which is installed to
Oil Content Meter )
As shown on FIG 5, during testing water will scanned by measuring lamp ( for more details refer to ODME
operation /manufacturer manual) and will show readings accordingly. ( Remark if calibration not passed or
get any alarm need to check measuring lamp it can be burnt )
Hydraulic valves closing and opening same as when testing across running and back flushing ,system will
cleaned with fresh water after that water will passed to Oil Content Meter
Testing Procedure – ODME S- 3000
MEPC 108 (49)
Oil Discharge Monitoring Equipment
30 L/NM Alarm Verification
Key 3 -299 ppm
Key 4 -10 knots
Key 5 -1000 m3/hr
Key 8 - Ship proceeding
Key SAVE -end input data
Put on monitoring
Discharge permitted - discharge valve, open
Key 3 -300 ppm
Discharge prohibited -discharge valve, closed
Audible alarm/ on screen - 30 L/NM Limit Exceeded
END TEST - Reset to normal parameter
15 PPM Alarm Verification
Key 3 -14 ppm
Key 8 -clean ballast
Key SAVE -end input data
Put on monitoring
Discharge permitted -discharge valve , open
Key 3 -15 ppm
Discharge prohibited - discharge valve, closed
Audible alarm/ on screen - PPM Range Exceeded
END TEST - Reset to normal parameter
Total oil limit Verification
Key 3 -299 ppm
Key 4 -10 knots
Key 5 -1000 m3/hr
Key 6 - 0000 ltrs
Key 7 - 2 ltrs
Key 8 - Ship proceeding
Key SAVE -end input data
Put on monitoring - wait for one minute
Discharge prohibited - discharge valve, closed
Audible alarm/ on screen - Total Oil limit Exceeded
END TEST - Reset to normal parameter
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VESSELS NAME: M/T KING DUNCAN
SAMPLING SYSTEM: ODME S-3000
MAKER: SEIL SERES CO., LTD.
HULL NO.: H0307344
SERIAL NUMBER: SSM-07-142
The Company has recently run an ODME survey across the tanker fleet, in view of several cases
revealing that ODME was not properly tested as part of the monthly on-board routine.
The survey revealed that the majority of the tankers in the fleet are fitted with ODME units which have
integrated all the functions required for proper routine testing.
Monthly testing routine:
*The measuring cell and associated piping needs to be maintained permanently in a clean & ready state,
therefore it is important that the cell is zero-calibrated in fresh water and that the unit circuit is properly
flushed with fresh water in a reverse way (back-flushing), either during the monthly testing routine or
prior/after the decanting use. Depending on the ODME model, the zero-calibration and back-flushing
steps can be achieved either independently, as a stand-alone mode, or as part of a 'self-test' procedure.
*The functionality of the remotely-operated overboard valve and return-to-slop valve needs to be
checked as part of the monthly testing routine. This can be achieved either by:
-the so-called 'manual over-riding' mode, where valves are reversed on their normal position by
operator action on a specific key-button on the unit,
-'simulation' or 'manual' mode, where operator inputs manually various combinations of
ppm/speed/flow parameters until the unit calculates that the oil content is lesser than 30 lt/Nm and
opens the overboard valve, while closing the return-to-slop valve.
*The 30 lt/Nm alarm needs to be checked as part of the monthly testing routine; the most efficient way
is achieved by the same above mentioned 'simulation' or 'manual' mode - considering that overboard
valve is opened and return-to-slop valve is closed as per above, the operator inputs manually opposite
values of ppm/speed/flow parameters until the unit calculates that the oil content is higher than 30
lt/Nm and shuts the overboard valve, while opening the return-to-slop valve.
It is worth mentioning that most of the Class surveyors will like to see the operation of the valves and
triggering of the 30lt/Nm alarm during the annual revalidation of the IOPP Certificate.
COM - Part A, 8.7 Use and Testing of the ODME
Displayed on Recorder on Overboard Sounded on
Type of alarm screen printer discharge valve Buzzer
control
30L/nm exceeded V V V V
Discharge Valve V V V V
wrongly open
Total Oil limit V V V V
exceeded
Ppm range V V V V
exceeded
Discharge flow V V V V
meter failure
Ship’s speed too V V V V
low
No sample V V V V
Motor pump V V V
wrongly powered
Calibration failure V V V V
Oil content Meter V V V V
failure
Printer Paper V V V V
failure
GPS failure V V V V
Hydraulic valves diagram –‘’Across running’’ test
Hydraulic valves diagram – ‘’back-flushing’’
Columbia ship Management (COM)
Main components of ODME
1 . ODME controller. Controller is central part of the ODME system. It controls overboard valve
according to MEPC 108(49), calculates, records, indicates and activates alarm in abnormal condition as
bellows:
Controller calculates the quantity of oil discharged, using the data supplied by the oil content meters as
follows:
∗ /ℎ
A: = /
∗ 1000
∗ /ℎ
B: = /ℎ
1000
C: Liters per hour *time in hours =total quantity in liters (total oil)
a)During
a)During monitoring, all the below data is recorded,
recorded, and also recorded when:
when:
-each time data is inputted by manual.
-each data the unit is switched on.
-each time an alarm is set off.
Below data:
-data and time ( GMT)
-ship’s position indication (GPS)
-overboard valve open or closed
-discharge prohibited or permitted
-instantaneous oil content (PPM)
-total oil limit
-ship’s speed
-discharge condition
-calibration or monitoring
-type of cargo discharged
-flow rate
-each alarms condition
-failure
-override
-liter per nautical mile
b) recording range:
-time : 0 to 23h 59n
-PPM concentration: 0~1000
-overboard discharge flow rate in /h 0-2300
-total quantity of oil discharge in liters : 1/30 000* total cargo
Receiving information from Log, GPS, Flow Meter , Oil Control Meter and performing calculation
according to requirement of MARPOL reg 34 , opening or closing of discharge valve or recirculation
valve to slop.
2. Oil Content Meter . Equipment measuring the oil content ( in ppm )or hydrocarbons containing
passing in water before discharge overboard for propose permitting discharge overboard or not.
Part of Oil Content Meter is Optical Equipment Measuring.
Oil Content Meter
Optical Equipment Measuring
3. Starter for Sampling p/p , this equipment for starting of motor automatic or manual or stopping,
for operating of pump which is taking the probes from samples point or fresh water passing thru Oil
Content meter, also this securing the pump or motor in case of failure of system.
4 Pressure switch, protection the pump, if cannot the take the probe or fresh water, of is not open
valves- Automatically will shut down the pump motor
5. Motor /pump for circulating the probe from sample point, or fresh water to measuring cell in oil
content meter
6. Hydraulic valve which is one of main component of ODME , supporting the circulation of probe or
water to measuring cell means controlling the discharge or not overboard , open closing hydraulic valve
participate in different tests, a-cross running, back flushing and calibration.
7. probe/sampling equipment installed at discharge cargo overboard pipe and overboard pipe of water
ballast
8. DP transmitter and Flow Meter one of the main part of ODME , measuring the flow rate of water,
principle of work
Flow meter
DP Transmitter
DP transmitter and flow meter on drawing
ODME / Procedures for discharge of oil and oily mixtures
into the sea
MARPOL ANNEX I Prevention of Pollution by Oil
It is always and absolutely prohibited:
•Uncontrolled discharge of oil and oil residues to the sea
•Discharge of oil, oil residues and oily water through bypassing
of the OWS / OCM / ODME equipment (as applicable).
Slop Handling
Slops which result from any ballast or cargo operation, tank cleaning, line washing or flushing
etc. must never be directly discharged to sea and must be retained in the slop .tanks.
Any water underneath the slops should be carefully and slowly discharged via the Oil Discharge
Monitor (ODME) and must be monitored by the slop tank oily/water detector.
Discharging of slops at sea must only be carried when:
• ODME and control system is operational and in use and slop
tank arrangement is available.
• Vessel is NOT in a special area, as per MARPOL Annex I.
• Vessel is more than 50 nm from the nearest land / baseline as
defined by MARPOL.
• Vessel is proceeding en route; this broadly means the vessel to
proceed to its intended destination (next port), self-propelled
and at a minimum speed capable in producing wake.
• The instantaneous rate of discharge of oil content does NOT
exceed 30 liters per nm.
• Total quantity of oil discharge into the sea must NOT exceed
1/30000 of the total quantity of the particular cargo of which
the residue formed a part.
Record keeping for slop handling by Deck
Department
ORB (part II) --- Details of cargo, ballast, STS operations, tank cleaning, E/R bilge transfer
to slop/cargo tank operations, slop handling and discharging of cargo, ballast, STS
operations, tank cleaning, E/R bilge transfer to slop/cargo tank operations, slop handling and
discharging
Slop Receipts --- Whenever Slops are delivered to shore facilities
