Deck General · MARPOL Oil (Annex I)
Under U.S. regulations (33 CFR Part 151), an oily water separator aboard a vessel must be fitted with a monitoring and control device that automatically:
- AStops the pump and sounds an alarm if oil content exceeds 15 ppm before discharge✓ Correct
- BRecords the volume of effluent discharged each hour
- CContacts the vessel owner if oil is detected in the separator output
- DNotifies the USCG in real time via satellite if oil is detected
Explanation
MARPOL Annex I (implemented in the U.S. via 33 CFR Part 151) requires an oily water separator to have an Oil Content Meter (OCM) or Oil Discharge Monitor (ODM) that automatically stops overboard discharge and triggers an alarm when oil content exceeds 15 ppm. This prevents illegal discharges due to equipment malfunction or oversight.
Authority: MARPOL Annex I
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