A classNK Technical Information updated by Withersby news source talks about Handling of IMO Interim Guidance on the Use of Biofuels under IMO-DCS and CII regulation.
ClassNK Technical Information
ClassNK Technical Information has been approved by the 80th Marine Environment Protection Committee (MEPC 80) for the use of biofuels under IMO-DCS and CII regulations. The interim guidance allows for the calculation of the CO2 emission factor (Cf) for biofuels that meet certain conditions.
These conditions include being certified to meet sustainability criteria through an international certification system, and having a Well-to-Wake GHG intensity of 33gCO2e/MJ or less. The formula for calculating the Cf for biofuels is Cf [gCO2eq/g] = GHG Intensity [gCO2eq/MJ] × Lower Calorific Value (LCV) [MJ/g].
The Cf value cannot be less than zero, and for blended fuels, the Cf is calculated based on the weighted average of the Cf for the respective amount of fuels by energy. This guidance is temporary and will be discontinued once a more comprehensive Well-to-Wake GHG emission calculation method, based on the IMO LCA guidelines, is developed.
The Marine Environment Protection Committee
The Marine Environment Protection Committee has approved interim guidance on the use of biofuels under regulations 26, 27, and 28 of MARPOL Annex VI (DCS and CII). This guidance is intended to be applied by member governments, shipowners, ship operators, fuel oil suppliers, and other stakeholders concerned for application as of 1 October 2023.
Biofuels certified by an international certification scheme, meeting its sustainability criteria, and providing a well-to-wake GHG emissions reduction of at least 65% compared to the well-to-wake emissions of fossil MGO of 94 gCO 2 e/MJ, may be assigned a CO2 emission factor equal to the value of the well-to-wake GHG emissions of the fuel according to the certificate (expressed in gCO 2 eq/MJ) multiplied by its lower calorific value (LCV, expressed in MJ/g) for the purpose of regulations 26, 27, and 28 of MARPOL Annex VI for the corresponding amount of fuels consumed by the ship.
A Proof of Sustainability or similar documentation from a recognized scheme should be provided along with the Bunker Delivery Note to facilitate the verification of the reported biofuel consumption. Biofuels not certified as “sustainable” or not fulfilling the well-to-wake emission factor criteria above should be assigned a Cf equal to the Cf of the equivalent fossil fuel type.
This interim guidance will be rescinded immediately upon operationalization of a well-to-wake GHG methodology through the LCA Guidelines. Administrations are invited to inform the Committee on which international certification schemes have been used when applying this guidance.
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Source: Withersby
