CIMAC WG07 | Guideline for the operation of Marine Engines on low Suphur diesel

This document has been prepared to advise the crew, users, vessel owners, charterers, crew, fuel and lubricant suppliers, equipment manufacturers, and classification societies about the fuel sulphur reduction options and implications, and especially the introduction of 0.10% m/m sulphur distillate in the ECA’s from 1 January 2015. There are also general sections to provide information on legislation, economic implications, refining and supply considerations and operating vessels on lower sulphur fuel.

IMO MARPOL Annex VI provides the legislative framework for fuel sulphur reductions and the associated timing. The relevant parts of this legislation are in the document and the implications of the changes are analysed.

Manufacturing, supply and fuel economic considerations are analysed and discussed. There is little doubt that the move from residual to distillate will increase costs considerably. An alternative is to install scrubbers or other aftertreatment devices to reduce the sulphur emission to a level which is in compliance with legislation. There is a large amount of information available on scrubber aftertreatment technology and as this is changing continuously it is not covered in detail in this document.

There are a number of operational issues which must be considered to ensure efficient and safe vessel operation on the low sulphur distillate and when changes and changeover of fuel are made. Vessel crews need to familiarise themselves with this information to ensure that smooth transitions between fuels are made. There are also a number of engine operational procedures which need to be followed in order to ensure that short and long term operation on distillate fuel does not lead to wear or malfunctioning of fuel system and engine components.

The impact of renewable liquid fuels is covered and some recommendations to facilitate operation on these fuels, if chosen, are given. As the scope of this document is limited to liquid fuels, there is no detailed information provided for operation on LNG or other gaseous fuels.

Download Publication [PDF]

CIMAC WG7 | Statement - 2018 Fuel Incidents
In 2018, the industry experienced a series of marine fuel incidents impacting the operation of more than 100 vessels. The specialists of CIMAC WG7 Fuels have prepared a statement .. more
CIMAC WG07 | Guideline - ISO 8217:2017 FAQ
The CIMAC Working Group 7 Fuels has prepared and issued a guideline to provide answers to the questions that may arise with the publication of ISO 8217:2017, the latest specification of .. more
CIMAC WG07 | Questionnaire
This document intends to collect information about the situations experienced where the Ignition and Combustion properties of the fuel are suspected of having influenced negatively on the .. more
CIMAC WG05 | Emission Calculation Check Guide
On 10 October 2008, the IMO Marine Environment Protection Committee at its 58th session, by Resolution MEPC.177(58), has adopted amendments to the Technical Code on Control of Emission of Nitrogen .. more
CIMAC WG05 | Statement EPA NPRM
Control of Emissions of Air pollution from Locomotive Engines and Marine compression-ignition engines less then 30 litres per cylinder. This publication discusses the following issues: .. more
CIMAC WG02 | Proposal IACS Attendance TAT
Subject: Attendance at Type Approval Tests (TAT) Background: Within the last years quite some experience was gained during Type Approval Tests. We have realized that Class surveyors well attended .. more
CIMAC WG07 | Statement EPA CARB
Use of low sulphur diesel fuels in coastal waters. CARB / EPA propose that Ocean going ships must use only distillate fuels (diesel oil) with a low sulphur content and a low content of aromatic .. more
Martina Pelzer
Phone: +49 69 6603 1567
Contact me via email