Odme Working Principle

is a mandatory system installed on oil tankers. Its primary purpose is to prevent marine pollution by continuously monitoring the oil content in the water being discharged from the ship's ballast or bilge systems.

A tanker is deballasting in a special area. ODME reads 12 ppm, flow = 150 m³/h, speed = 12 knots. Instantaneous oil discharge = (12 × 150) / 12 = 150 liters/nm → alarm triggers, valve closes automatically, discharge stops until speed increases or flow reduces. odme working principle

Measured by a flow meter in the discharge line. is a mandatory system installed on oil tankers

A central computing unit integrates the PPM data with the vessel's speed (from GPS or Speed Log) and the discharge flow rate (from a flow meter). ODME reads 12 ppm, flow = 150 m³/h, speed = 12 knots

For a discharge to be considered "Legal" under MARPOL, the ODME ensures the following conditions are met simultaneously:

A standard ODME system consists of several specialized parts working in coordination: