At appropriate intervals, inspection rounds should be made of the main propulsion plant, auxiliary machinery, and steering spaces. If bilge levels are identified to be high, they should be __________.
ā¢ MARPOL pollution prevention rules on oily water discharges ā¢ The purpose and operation of an oily water separator (OWS) and oil content meter ā¢ Typical company/ISM and regulatory limits on oil content in bilge water before discharge
ā¢ Think about why bilge water in machinery spaces is often considered oily, even if it looks mostly like clean water. ā¢ Which equipment is specifically installed on ships to allow legal discharge of oily mixtures from machinery-space bilges? ā¢ Would regulations ever allow you to discharge machinery-space bilge directly overboard just because it "looks clean," or must it pass through certain equipment or be contained?
ā¢ Check what MARPOL and company procedures say about discharging machinery-space bilge water. ā¢ Confirm the role of the oily water separator (OWS) versus a holding tank in handling bilge mixtures. ā¢ Verify the typical allowed ppm (parts per million) oil content limit in overboard discharges from an OWS.
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