AMSA issues Marine Notice 19/2006 on discharge standard for liquid substances mixed with oil

The Australian Maritime Authority (AMSA) has issued Marine Notice 19/2006, the purpose of which is to advise ship owners, operators, relevant seagoing personnel, agents and shippers of the potential for certain liquid products under Annex II of the International Convention for the Prevention of Pollution from Ships (MARPOL 73/78) to be mixed with oil when carried as a cargo on ships.


There are a number of substances commonly known as lube oil additives that are listed as "Other Liquid Substances" under Annex II; however, when carried as cargo they are shipped or stored in an oil medium.


AMSA states that it is important to recognise that when any liquid substance is mixed with oil, MARPOL 73/78 clearly provides that the most stringent discharge standard applicable to any component of the mixture will apply. Therefore, any discharge of residues of "Other Liquid Substances" mixed with oil is subject to the oil discharge requirements of Annex I of MARPOL 73/78.


The Notice contains a list of some know lube oil additives to assist industry in identifying what chemical constituents are commonly suspended or transported in mineral oil.


The full list of AMSA Marine Notices 2006 is on the AMSA web site and can be viewed here.


Contact: Howard Snaith