DNV GL has issued Statutory Update regarding the carriage on- fuel blends onboard tankers. A bio-fuel blend is made up of a bio-fuel part and a petroleumoil part. Examples may be mixtures of ethanol and gasoline or FAME and diesel.Recognized bio-fuels are those IBC Code products listed in Annex 11 of the MEPC.2 Circular, which is issued annually. Currently, there are eight recognized bio-fuels listed:Fatty AcidMethyl Esters (FAME)Vegetable oils Ethyl alcohol (ethanol)Alkanes (C10-C26), linear and branched with a flashpoint >60°CAlkanes (C10-C26), linear and branched with a flashpoint ≤60°CAlkanes (C5-C7), linear and branchedAlkanes (C10-C17), linear and branchedTert-Amyl ethyl etherWhile pure bio-fuels are shipped on chemical tankers under the IBC Code Certificate of Fitness, a bio-fuel blend may be carried either as an oil subject to MARPOL ANNEX I or as a chemical subject to the IBC Code. Under which regime a biofuel blend belongs depends on the petroleum-oil/bio-fuel blending ratio. If the blend contains 75% or more of petroleum-oil, it is considered oil under MARPOL ANNEX I; and where the petroleum-oil part constitutes for less than 75% of the total blend, it is considered a chemical.Carriage on Oil Tankers subject to MARPOL Annex IThe IMO guidelines on the carriage of bio-fuel blends ...
Read moreDetails