Wartsila 34DF Series - Page 44

The requirement is applicable to fuels with a sulphur content below 500 mg/kg (0.050 % mass).
8)
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 cat-
egories 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 2Limit HFO 1UnitProperty
16...2416...24cStViscosity, before injection pumps
1)
ISO 3104700700cStViscosity at 50°C, max.
ISO 3675 or 12185991 / 1010
2)
991 / 1010
2)
kg/m³Density at 15°C, max.
ISO 8217, Annex F870850CCAI, max.
3)
ISO 8754 or 14596Statutory requirements% massSulphur, max.
4) 5)
ISO 27196060°CFlash point, min.
IP 57022mg/kgHydrogen sulfide, max.
6)
ASTM D6642.52.5mg KOH/gAcid number, max.
ISO 10307-20.10.1% massTotal sediment aged, max.
ISO 103702015% massCarbon residue, micro method, max.
ASTM D 3279148% massAsphaltenes, max.
1)
ISO 30163030°CPour point (upper), max.
7)
ISO 3733 or ASTM
D6304-C
1)
0.50.5% volumeWater, max.
ISO 3733 or ASTM
D6304-C
1)
0.30.3% volumeWater before engine, max.
1)
ISO 6245 or LP1001
1)
0.150.05% massAsh, max.
ISO 14597 or IP 501
or IP 470
450100mg/kgVanadium, max.
5)
IP 501 or IP 47010050mg/kgSodium, max.
5)
IP 501 or IP 4703030mg/kgSodium before engine, max.
1) 5)
ISO 10478 or IP 501
or IP 470
6030mg/kgAluminium + Silicon, max.
ISO 10478 or IP 501
or IP 470
1515mg/kgAluminium + Silicon before engine, max.
1)
IP 501 or IP 4703030mg/kgUsed lubricating oil, calcium, max.
8)
IP 501 or IP 4701515mg/kgUsed lubricating oil, zinc, max.
8)
IP 501 or IP 5001515mg/kgUsed lubricating oil, phosphorus, max.
8)
Remarks:
Additional properties specified by Wärtsilä, which are not included in the ISO specification.
1)
Max. 1010 kg/m³ at 15°C provided that the fuel treatment system can remove water and solids (sediment, sodium,
aluminium, silicon) before the engine to specified levels.
2)
38 Product Guide Wärtsilä 34DF - 3/2012
Product Guide
6. Fuel System