Oil discharge monitoring equipment
Oil Discharge Monitoring Equipment (ODME) is based on a measurement of oil content in the ballast and slop water, to measure conformance with regulations.[1] The apparatus is equipped with a GPS, data recording functionality, an oil content meter and a flow meter.[2] By use of data interpretation, a computing unit will be able to allow the discharge to continue or it will stop it using a valve outside the deck.[2]
Operating principle
A sample point on the discharge line allows for the analyzer to determine the oil content of the ballast and slop water in PPM.[2] The analyzer is self-maintaining by periodical cleansings with fresh water, and therefore requires a minimum of active maintenance from the crew.[2] The results of the analyzer are sent to a computer, which determines whether the oil content values are to result in overboard discharge or not.[2] The valves that direct the ballast water either over board or to slop tank are controlled by the integrated computer, and a GPS signal further automates the process by including special areas and completes the required input for the Oil Record Book.[2]
All oil tankers with a gross tonnage of larger than 150 must have efficient Oil Discharge Monitoring Equipment on board.[3][4]
The oily discharge is sent out to sea through a pump.[5] The oily mixture has to pass through a series of sensors to determine whether it is acceptable to be sent to the discharge pipe.[6]
Based on regulations, the following values must be recorded by the system:[3]
- Date and time of the discharge
- Location of the ship
- Oil content of the discharge in ppm
- Total quantity discharged
- Discharge rate
All records of Oil Detection Monitoring Equipment must be stored on board ships for no less than 3 years.[3]
Oil Discharge Monitoring systems today consist of a computing unit that is installed in the cargo control room. The computer unit control and receives data from other ODME components.[7]
ODME systems also have an analyzing unit that contains the Oil content meter, a fresh water valve for cleaning purposes, and a pressure transmitter that monitors the sample flow through the measuring cell.[7]
See Also
- Marpol 73/78
- Marpol Annex I
- Oily water separators
- Oily water separator (marine)
- Oil Content Meter
- Magic Pipe
- IMO
- Port Reception Facilities
References
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- ↑ 2.0 2.1 2.2 2.3 2.4 2.5 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 3.0 3.1 3.2 Lua error in package.lua at line 80: module 'strict' not found.
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- ↑ 7.0 7.1 Lua error in package.lua at line 80: module 'strict' not found.
