In accordance with international MARPOL Annex I regulations and federal regulations under 33 CFR Subchapter O (Pollution), for vessels of 400 gross tons and above which are all required to carry an oily-water separator to process bilge slops, what is the design criteria in terms of maximum oil content of the overboard discharge?
⢠MARPOL Annex I requirements for oil content in machinery space bilge water discharges ⢠33 CFR Subchapter O implementation of international oil pollution standards ⢠How an oilyâwater separator (OWS) and oil content meter are calibrated and what limit triggers automatic stopping of discharge
⢠Think about what level of oil content is considered âsafeâ enough to be routinely discharged overboard from engine room bilges under international rules. ⢠Which of these values is commonly associated with the alarm and automatic stopping device on an oilyâwater separator? ⢠Consider which options are unrealistically strict for realâworld ship operations and which are too high to be acceptable under pollution prevention rules.
⢠Verify the specific maximum oil content limit for bilge water discharge in MARPOL Annex I, Regulation 14/15 (machinery space bilges). ⢠Check 33 CFR Part 155 and 157 for alignment with MARPOLâs numerical limit on oil content for OWS discharges. ⢠Confirm which value is typically used to set the oil content meter alarm and automatic stopping device on compliant OWS systems.
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