Revised MARPOL requirements for oil residue (sludge) piping arrangements
16 September 2016 | C16024
The IMO has adopted amendments to Regulation 12 of MARPOL Annex I, which will enter into force on January 01, 2017.
Ship Owners / Managers / Operators | Surveyors | Flag Administrations
The amendments mean that oil residue (sludge) tanks must have no discharge connections to the bilge system, oily bilge water holding tank(s), tank top or oily water separators.
Oil residue (sludge) tank(s) shall be provided and:
- shall be of adequate capacity, having regard to the type of machinery and length of voyage, to receive the oil residues (sludge) which cannot be dealt with otherwise in accordance with the requirements of IMO Resolution MEPC.266(68)
- shall be provided with a designated pump that is capable of taking suction from the oil residue (sludge) tank(s) for disposal of oil residue (sludge) by means as described in regulation 12.2 of Annex I to MARPOL 73/78;
- shall have no discharge connections to the bilge system, oily bilge water holding tank(s), tank top or oily water separators, except that:
- the tank(s) may be fitted with drains, with manually operated self-closing valves and arrangements for subsequent visual monitoring of the settled water, that lead to an oily bilge water holding tank or bilge well, or an alternative arrangement, provided such arrangement does not connect directly to the bilge discharge piping system; and
- the sludge tank discharge piping and bilge-water piping may be connected to a common piping leading to the standard discharge connection referred to in regulation 13; the connection of both systems to the possible common piping leading to the standard discharge connection referred to in regulation 13 shall not allow for the transfer of sludge to the bilge system;
- shall not be arranged with any piping that has direct connection overboard, other than the standard discharge connection referred to in regulation 13; and
- shall be designed and constructed so as to facilitate their cleaning and the discharge of residues to reception facilities.
Some examples of possible acceptable arrangements are provided below.
Above requirements apply to all new and existing vessels with gross tonnage equal and above 400 GT. All ships, constructed before January 01, 2017 must be arranged to comply with the requirements no later than the first renewal IOPP survey carried out on or after January 01, 2017.
Ship owners / Managers are advised to take note of above requirements to achieve their ships’ compliance. For ships constructed before January 1, 2017 which does not comply with the requirements set above, Owners are required to propose modification and get the plans submitted and approved.