According to , any oil tanker of 150 gross tonnage and above must be fitted with an ODME to ensure that the discharge of oil does not exceed regulatory limits (typically 15 parts per million for machinery space bilges, and specific flow rates for cargo tank washings).
A sample pump continuously draws water from the discharge line and sends it to an analyzing unit. odme working principle
The ODME system ensures that any discharge of oily water from a tanker’s cargo tanks into the sea remains within MARPOL limits (instantaneous oil content ≤ 15 ppm, total oil discharged ≤ 30 liters per nautical mile). It calculates, records, and controls discharge in real time. According to , any oil tanker of 150
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. It calculates, records, and controls discharge in real time
