Platts proposes Compatibility Rating maximum of 2 for global Marine Fuel 0.5% assessments

S&P Global Platts proposes a compatibility rating maximum result of 2 on the Standard Test Method for Cleanliness and Compatibility of Residual Fuels by Spot Test (also known as the ASTM D4740 spot test) in its global Marine Fuel 0.5% assessments across all regions and sizes, including cargoes, barges and bunker deliveries, effective Oct. 1, 2021.

The ASTM test is a widely-used test method for material below 50 CST viscosity at 100 degrees Celsius. ASTM states that in this test, a rating of Number 3 or higher indicates that the fuel "is likely to cause operating problems."

The proposal follows broad market feedback on higher standards of assurances regarding the stability and compatibility of Marine Fuel 0.5% in the global bunker fuels market. Platts Marine Fuel 0.5% assessments reflect specifications for RMG fuels as defined by the International Organization for Standardization in document ISO 8217:2010 Petroleum products -- Fuels (class F) -- Specifications of marine fuels, but with a maximum sulfur limit of 0.5% and a minimum viscosity of 30 CST at 50 degrees Celsius.

Please send any comments or questions by Aug. 31, 2021 to oilgroup@spglobal.com and pricegroup@spglobal.com.

Platts will consider all comments received and will make comments not marked as confidential available upon request.