Blending of ‘unestablished’ biofuel feedstocks in marine fuels

Recently a number of ships in the Rotterdam area have, undeclared to them, received fuels with up to around 20% of an ‘unestablished1’ blend component. One of these ‘unestablished’ products appears to have been a Cashew Nut Shell Liquid (CNSL) from undeclared source materials or production processes. This was highlighted to FOBAS as a result of investigating a number of ships reporting having experienced engine fuel pump and injector related damage leading to operational problems which have been linked to the presence of ‘unestablished’ CNSL in the fuel as supplied.

Please find attached a bulletin which provides further information in relation to this.

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