IMO Papers

MEPC 76-9-9 - Comments on the outcome of PPR 8

MEPC 76-9-9 – Comments on the outcome of PPR 8

This document comments on the outcome of PPR 8 on Black Carbon (BC) and on two options to reduce ship BC emissions other than an immediate switch to distillates in the Arctic – through universal marine engine standards and limiting the aromatic content in marine fuels – and identifies some possible challenges that will need to be addressed

MEPC 76-9-8 - Comments on documents MEPC 7691 and MEPC 7692

Comments on documents MEPC 76/9/1 and MEPC 76/9/2

This document provides comments on documents MEPC 76/9/1 (ICES) and MEPC 76/9/2 (Austria et al.) and, based on the information contained in these and other documents, proposes an amendment to the title and scope of the proposed output on the evaluation and harmonization of rules and guidance on the discharge of discharge waters from EGCS into the marine environment.

Comments on document PPR 8/5

PPR 8/5/4: Comments on document PPR 8/5 (Submitted by FOEI, Greenpeace International, WWF, Pacific Environment and CSC)

The Reduction on the Arctic of Emissions of Black Carbon from International Shipping: This document comments on document PPR 8/5. It recommends a way forward with respect to a policy option that does not require a measurement method and urges Member States to commence action to reduce the impact on the Arctic of emissions of Black Carbon from international shipping.

PPR 8/5/3: Comments on document PPR 8/5/1 (IBIEC and IBIA)

PPR 8/5/3: Comments on document PPR 8/5/1 (IBIEC and IBIA)

This document comments on document PPR 8/5/1 and offers some additional information that the co-sponsors believe is relevant to put the results presented in document PPR 8/5/1 in perspective (The Reduction on the Arctic of Emissions of Black Carbon from International Shipping)

PPR 8/5/2: Comments on document PPR 8/5/1

PPR 8/5/2: Comments on document PPR 8/5/1 (ISO)

In terms of overall Black Carbon emissions, it is not seen that setting an H/C limit would address the issues since VLSFOs are generally not prone to aromaticity and furthermore the hydrocarbon structure of a fuel is only one element in the factors which govern BC emissions – The Reduction on the Arctic of Emissions of Black Carbon from International Shipping

Final results of a Black Carbon measurement campaign with emphasis on the impact of the fuel oil quality on Black Carbon emissions

PPR 8/5/1: Final results of a Black Carbon measurement campaign with emphasis on the impact of the fuel oil quality on Black Carbon emissions

In this document, the final results of a Black Carbon measurement campaign on a single cylinder 4-stroke medium speed research engine are presented. The aim of the study was to analyse the impact of fuel oil quality on Black Carbon emissions. Furthermore, the composition of the particulate matter in the exhaust gas and a detailed fuel oil analysis of the VLSFOs are presented. The formation of Black Carbon is dominated by the aromatic content and H/C ratio of a fuel and could not be compensated by engine settings (injection timing or pressure). The aromatic fraction of investigated VLSFO fuels were dominated by harmful polycyclic aromatic hydrocarbons (PAH).