Crankcase explosion is caused due to the overheating of one of the cylinders in the main machinery space. The consequences of the explosion is severe and it affects the working of other engines.
Although there have been many occurrences of crankcase explosions recorded, there is no official body to whom they can be formally reported. As a consequence these occurrences have been reported randomly which has made it difficult to statistically analyse the number, the root cause and the severity of the explosions.
To avoid an increase in risk of crankcase explosions occurring, the engine makers and classification societies have developed common rules for oil mist detection and crankcase relief valves.
Concerns have also been raised over the use of the flash point of the lubricant as a reliable indicator for the risk of crankcase explosion. The flash point test has been adopted by all major used oil laboratories as a service standard to vessel operators.
This document provides an overview of several conditions that causes crankcase explosion and on the over reliance on the flash point as an indicator for crankcase explosion.
Download Publication [PDF]
The guideline aims to understand the issue of cold corrosion which has been a regular occurrence with operators of large two-stroke marine engines due to engine operation at low loads. It intends .. more
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 marine .. more
The CIMAC Working Group 7 Fuels has prepared and issued a guideline on filtration of residual fuels. Traditionally, filters have been considered a safeguard for marine engines, however, a more .. more
With the introduction of MARPOL Annex VI, the sulphur content of a particular fuel oil is now often the primary factor in assessing whether or not that fuel oil is acceptable for intended use. .. more
The purpose of this paper is to consider the various types of fuel, and combinations of fuels, that may be used by marine vessels through to 2025, and then to discuss the potential impacts that .. more
Crankcase explosion is caused due to the overheating of one of the cylinders in the main machinery space. The consequences of the explosion is severe and it affects the working of other engines. .. more
In the current absence of an officially accepted specification for marine fuel containing more than 0.1% v/v biodiesel, this CIMAC publication provides background information and guidance to .. more
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 .. more
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
Current commercial residual fuel specifications cannot reliably predict the ignition and combustion characteristics of a fuel due to lack of a suitable test parameter. They cannot therefore protect .. more