WÄRTSILÄ WARTSILA 50DF, Product Manual

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It shall be ensured that the pour point is suitable for the equipment on board, especially if the ship operates in cold climates.
5)
If the sample is dyed and not transparent, then the water limit and test method ISO 12937 shall apply.
6)
If the sample is not clear and bright, the test cannot be undertaken and hence the lubricity limit shall not apply.
7)
The requirement is applicable to fuels with a sulphur content below 500 mg/kg (0.050 % mass). 8)
Additional properties specified by the engine manufacturer, which are not included in the ISO 8217:2012(E) standard. The
min. fuel temperature has to be always at least 10 °C above fuel’s pour point, cloud point and cold filter plugging point. 9)
NOTE
Pilot fuel quality must be according to DMX, DMA, DMZ or DMB.
Lubricating oil, foreign substances or chemical waste, hazardous to the safety of
the installation or detrimental to the performance of engines, should not be
contained in the fuel.
Heavy Fuel Oil (HFO)
Residual fuel grades are referred to as HFO (Heavy Fuel Oil). The fuel specification HFO 2
covers the categories ISO-F-RMA 10 to RMK 700. Fuels fulfilling the specification HFO 1
permit longer overhaul intervals of specific engine components than HFO 2.
Table 6-3 HFO specifications
Test method ref. Limit HFO 2 Limit HFO 1 Unit Property
16...24 16...24 cSt Viscosity, before injection pumps 1)
ISO 3104 700 700 cSt Viscosity at 50°C, max.
ISO 3675 or 12185 991 / 1010 2) 991 / 1010 2) kg/m³ Density at 15°C, max.
ISO 8217, Annex F 870 850 CCAI, max.
3)
ISO 8754 or 14596 Statutory requirements % mass Sulphur, max. 4) 5)
ISO 2719 60 60 °C Flash point, min.
IP 570 2 2 mg/kg Hydrogen sulfide, max. 6)
ASTM D664 2.5 2.5 mg KOH/g Acid number, max.
ISO 10307-2 0.1 0.1 % mass Total sediment aged, max.
ISO 10370 20 15 % mass Carbon residue, micro method, max.
ASTM D 3279 14 8 % mass Asphaltenes, max.
1)
ISO 3016 30 30 °C Pour point (upper), max. 7)
ISO 3733 or ASTM
D6304-C 1)
0.5 0.5 % volume Water, max.
ISO 3733 or ASTM
D6304-C 1)
0.3 0.3 % volume Water before engine, max. 1)
ISO 6245 or LP1001 1) 0.15 0.05 % mass Ash, max.
ISO 14597 or IP 501
or IP 470
450 100 mg/kg Vanadium, max. 5)
IP 501 or IP 470 100 50 mg/kg Sodium, max. 5)
IP 501 or IP 470 30 30 mg/kg Sodium before engine, max. 1) 5)
ISO 10478 or IP 501
or IP 470
60 30 mg/kg Alu Silicon, max.
ISO 10478 or IP 501
or IP 470
15 15 mg/kg Alu Silicon before engine, max. 1)
IP 501 or IP 470 30 30 mg/kg Used lubricating oil, calcium, max. 8)
IP 501 or IP 470 15 15 mg/kg Used lubricating oil, zinc, max. 8)
IP 501 or IP 500 15 15 mg/kg Used lubricating oil, phosphorus, max.
8)
Wärtsilä 50DF Product Guide - a16 - 9 September 2016 6-3
6. Fuel System Wärtsilä 50DF Product Guide