Class 2 (2nd Engineer) MEKG 📅 Oct 2019

Exam Question

With reference to the fuel standards ISO-8217-2017 discuss the amendments made as compared to its previous edition. Explain the significance of the following:

(a) Pour point, cloud point and cold filter plugging point.

(b) Cat fines

(d) Dissolved H2S in fuel

Reference Answer

Amendments in ISO 8217:2017 Compared to Previous Edition
The ISO 8217:2017 standard introduced several significant updates from its 2012 edition, addressing evolving industry needs, enhancing operational safety, and incorporating regulatory changes.
Broader Scope: The standard's scope now includes fuels containing hydrocarbons from renewable, synthetic, or co-processed sources , moving beyond solely petroleum-based hydrocarbons. This change addresses the emergence of new fuel types and supports global decarbonization efforts.
Bio-Fuel Blends Addition: A new class of distillate (DF) grades ( DFA, DFZ, DFB ) was introduced, allowing for the inclusion of up to 7% Fatty Acid Methyl Ester (FAME) . This promotes the use of biodiesel in marine fuels.

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