Ultimate analysis

tharma4u · Post by **tharma4u** » Thu Jan 24, 2008 5:21 am

Hi all,

Please let me know the ultimate analysis for Marine Fuel Oil (MFO 180 cSt) if you have them, or please advise me on where I can find them.

Thank you very much for your support.

Kind regard
Tharma

TxMarEng · Post by **TxMarEng** » Thu Jan 24, 2008 6:40 am

ISO8217-2005 is the latest standard and provides the limits for all grades. RME180 and RMF180 are the 2 grades for 180cst. The major differences being the limits for Micro Carbon Residue 15%m/m vs 20%m/m, Ash 0.10%m/m vs 0.15%m/m and Vanadium 200ppm vs 500ppm.

Don't quite understand your term "ultimate analysis".

Check out www.dnvps.com there is also some good info there.

tharma4u · Post by **tharma4u** » Thu Jan 24, 2008 6:56 am

Just to clarify the term 'ultimate analysis'

In ultimate analysis all the constituents of the fuel which includes carbon, hydrogen, moisture, ash, nitrogen, sulphur and oxgen are listed as percentage of mass...

TxMarEng · Post by **TxMarEng** » Thu Jan 24, 2008 10:47 am

CHN&O are generally not run as part of a standard fuel quality assessment If you want the total spectrum you would also add ASTM D-240 gross heat of combustion and calculate the net heat based on Hydrogen content or perhaps an FCA (Fuel Combustions Analysis) To identify all components of a fuel one would have to run GC/MS or NMR tests.

Dieseldame · Post by **Dieseldame** » Thu Jan 24, 2008 5:01 pm

Okay, can someone demystify the acronyms and terms for me???

ASTM D-240

ISO8217-2005

GC/MS or NMR

DD

TxMarEng · Post by **TxMarEng** » Fri Jan 25, 2008 10:53 am

ASTM D240 Gross heat of Combustion by Bomb Calorimeter

ISO8217-2005 Latest ISO Standard Specifications for Marine Fuels

GC/MS - Gas Chromatography/Mass Spectrometry

NMR - Nuclear Magnetic Resonance

Both sed in testing of fuels for foreign contaminants such as those define in Clause 5.1 of ISO8217-2005 "Fuel shall contain no foreign substances or chemicals which can harm to vessel, personnel or environment"

Dieseldame · Post by **Dieseldame** » Fri Jan 25, 2008 4:10 pm

Thanks for taking the time to unscramble the soup.

DD

TxMarEng · Post by **TxMarEng** » Thu Jul 31, 2008 6:53 am

http://www.nepia.com/risk/publications/ ... rticle%209

http://www.leonisnav.com.ph/images/BS20 ... Manual.htm

Dieseldame · Post by **Dieseldame** » Thu Jul 31, 2008 10:34 pm

Great links!

Thanks.

DD

Ultimate analysis

Ultimate analysis

ISO8217-2005

CHN&O

Definitions please

Acronyms

Thanks!

Good website for info

Thanks