Cases of excessive cat fines found within bunker fuels at Singapore decreased between the period of 15th to 30th June 2018, according to Lloyd’s Register Fuel Oil Bunkering Analysis and Advisory Service (FOBAS) data.
FOBAS’ report in the earlier fortnight recorded three cases of cat fines among bunker samples tested, while the latest noted a single case.
A Monday report from FOBAS, meanwhile, noted several tested residual fuel samples from ports in the ARA (Amsterdam-Rotterdam-Antwerp) region, bunkered against an RMK700 grade exceeding the 700 cSt limit for viscosity; viscosities of these fuels range from 730 cSt to 750 cSt.
“Operationally a higher viscosity will require an increase in temperatures to achieve the required transfer/injection viscosity,” it notes.
“The injection temperature needed for 12cSt viscosity at engine inlet for a 750cSt fuel would be 149 Deg C, compared to 148 Deg C for a 700 cSt fuel.
“Therefore with only 1 degree increase needed these slight off-sec fuels may be able to be used without issue, however in each case this should be confirmed based on the vessels individual machinery capabilities.”
The top three off-spec bunker ports for the period between 15th to 30th June 2018 are as follows:
|Port||Characteristic||ISO 8217 Limit or Advised Value||Final result||Unit|
|Singapore||Aluminium + Silicon||60*||84||mg/kg|
|Singapore||Density at 15°C||0.9908**||0.9921||kg/l|
|Antwerp||Density at 15°C||0.9907**||0.9934||kg/l|
|Antwerp||Total Sediment Potential||0.10*||0.17||% Mass|
|Antwerp||Viscosity at 50°C||696.8**||742.0||cSt|
|Antwerp||Viscosity at 50°C||699.2**||746.5||cSt|
|Antwerp||Viscosity at 50°C||373.2**||423.4||cSt|
|Rotterdam||Carbon residue||18.00*||20.96||% Mass|
|Rotterdam||Viscosity at 50°C||693.9**||751.7||cSt|
|Rotterdam||Viscosity at 50°C||699.2**||734.5||cSt|
|Rotterdam||Viscosity at 50°C||356.0**||404.6||cSt|
|Fujairah||Aluminium + Silicon||60*||97||mg/kg|
|Kozmino||MCR 10% bottom||0.30*||2.02||% Mass|
|Kozmino||Viscosity at 40°C||9.42**||6.1||cSt|
|Kozmino||Viscosity at 40°C||7.04**||7.9||cSt|
|Novorossiysk||Density at 15°C||0.9941**||0.9936||kg/l|
|Novorossiysk||Density at 15°C||0.9850**||0.9957||kg/l|
|Novorossiysk||Viscosity at 50°C||378.6**||686.8||cSt|
|Novorossiysk||Viscosity at 50°C||289.6**||404.3||cSt|
Related: FOBAS: Cat fine issues continue at Singapore port
Related: FOBAS: Cat fine issues return to Singapore port
Related: Singapore: Cat fines, flash point off spec issues resolved
Related: FOBAS: Cat fines plagued Singapore off-spec bunkers in April
Photo credit: Maritime and Port Authority of Singapore
Published: 3 July, 2018
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