12.3 Waste Management – Revised IBTS Regulation 12 – Tanks for oil residuesIntegrated Ballast Treatment SystemSeparation of Clean and Dirty DrainsPre-treatment of Oily DrainsMinimum Sludge Tank CapacityRevoking of UI (Minimum Sludge Tank Capacity is 50% if an Homogenizer or Sludge Incinerator is fitted)
2Regulation 12 – Tanks for Oil Residues 2 Oil residues (sludge) may be disposed of directly from the oil residue (sludge) tank(s) through the standard discharge connection referred to in regulation 13, or any other approved means of disposal. The tank(s):.1 shall be provided with a designated pump that is capable of taking suction from the oil residue (sludge) tank(s);.2 shall have no discharge connections to bilge system, oily bilge water holding tanks, tank top or oily water separator; and.3 may be fitted with drains, with manually operated self-closing valves, for the collection of settled water or an alternative arrangement, provided such arrangement does not connect directly to the bilge piping system.
3Integrated Bilge Treatment System Clean DrainsMain Engine Air Cooler DrainCooling Fresh Water, Sea WaterSteam Drain, Boiler WaterDrain to the Clean Drain Tank and can be Pumped directly overboard.
4Integrated Bilge Treatment System Oil Residues (Sludge)Hydraulic Oil Pump & Tank Coaming DrainWaste Oil Pump & Tank Coaming DrainLO Pump & Tank Coaming DrainBilge Equipment Coaming DrainMain Engine Scavenge DrainCompressed Air DrainPurifier SludgeBilge Primary Tank (Oil Side)Workshop DrainDrain to the Sludge Tank for discharge Ashore or Incineration
5Integrated Bilge Treatment System Oily Bilge WaterEngine Room ScuppersEngine Room BilgesDrain/Pumped to Primary Bilge Tank for pre-treatment to separate oil and water phases.Water side drains to Bilge Holding Tank and discharge via OWSOil Side Drains to Sludge Tank
7Minimum Sludge Tank Capacity IncineratorsOperation during Manned periods only, e.g. 8 hours per day.Port stays and stand by passages restrict operation.HomogenizersEffectivenessUI will be revoked with amendments to MARPOL Annex I