BS ISO 8217:2010 pdf free download – Petroleum products – Fuels (class F)一 Specifications of marine fuels.
NOTE See 5.4.
A.2.2 To date, determining a de minimis level is not straightforward given that
a wide range of types of FAME products from different sources is available in the market place;
— varying levels of contamination can be present due to the use of common equipment or pipelines in refineries, fuel terminals or other supply facilities;
— a wide range of different analytical techniques is used to detect these FAME products and associated byproducts with no standardized approach:
in most cases, sufficient data are not yet available with respect to the effects of FAME products on marine fuel systems.
A.2.3 For the purpose of this International Standard
– in the case of distillate fuels (DMX, DMA, DMZ and DMB when clear and bright), it is recommended that “de minimis”be taken as not exceeding approximately 0,1 volume % when determined in accordance with
EN 14078.
— In the case of DMB when it is not clear and bright and all categories of residual fuels, “de minimis” cannot be expressed in numerical terms since no test method with formal precision statement is currently available. Thus, it should be treated as contamination from the supply chain system.
Fuel producers and suppliers should ensure that adequate controls are in place so that the resultant fuel, as delivered, is compliant with the requirements of Clause 5 of this International Standard.
This International Standard precludes the incorporation of deleterious materials as stipulated in Clause 5.
Such materials should not be present, mixed or blended in marine fuels.
Determining the harmful level of a material or substance is not straightforward given that
a) each fuel is a unique, complex blend of hydrocarbon species;
b) a wide range of materials from different sources can enter the marine supply chain from the production, handling and transport systems;
c) varying levels of contamination can be present in the fuel due to the use of common equipment or pipelines in refineries, fuel terminals or other supply facilities;
d) various analytical techniques are used to detect these contaminants and specific chemical species with no standardized approach;
e) in most cases, sufficient data are not available with respect to the effects of any one specific contaminant, or combinations thereof, on the variety of marine machinery systems in service, personnel or upon the environment.
It is, therefore, not practical to require detailed chemical analysis for each delivery of fuels beyond the requirements listed in this International Standard. Instead, it is required that a refinery, fuel terminal or any other supply facility, including supply barges and truck deliveries, have in place adequate quality assurance and management of change procedures to ensure that the resultant fuel is compliant with the requirements of Clause 5 of this International Standard with regard to the exclusion of deleterious materials.