Dear sir,
Our 1x1200kw hfo diesel generator set is designed and quoted to standard hfo oil of CST 380, and from your attached hfo report, we found that the CST is around 500-700 which will need very high standard hfo treatment system to maintain the performance of the power plant. When considering your power plant capacity is around 1200kw, and even not as continuous operation, we suggest you locate CST 380 hfo as fuel, which will reduce your investment and also performance, lower your O&M cost.
Here attached is the HFO guidance.:
Fuels
HFO quality
CSI. diesel engines are designed for reliable operation on heavy fuel oil.
For guidance on purchase, reference is made to ISO 8217, BS6843 and to CIMAC recommendations regarding requirements for heavy fuel for diesel engines, edition 2001. From these, the maximum accepted grades are RMH 35 and K35.
For reference purposes, an extract from the relevant standards and specifications is shown in Table 1.
Designation
|
|
|
CIMAC
D 15 |
CIMAC
H 35 |
Related to ISO 8217 (96): F |
|
|
RMD 15 |
RMH 35 |
Characteristic |
Dim. |
Limit |
|
|
Density at 15 oC |
kg/m3 |
max. |
980 |
991 |
Kinematic viscosity at 100 oC 1) |
cSt 2) |
max. |
15 |
35 |
Flash point |
oC |
min. |
60 |
60 |
Pour point |
min. |
max. |
30 |
30 |
Carbon residue |
%(m/m) |
max. |
14 |
18 |
Ash |
%(m/m) |
max. |
0.10 |
0.15 |
Total sediment after ageing |
%(m/m) |
max. |
0.10 |
0.10 |
Water |
%(v/v) |
max. |
0.80 |
1.0 |
Sulphur |
%(m/m) |
max. |
2 |
3 |
Vanadium |
mg/kg |
max. |
350 |
600 |
Aluminum and silicon |
mg/kg |
max. |
80 |
80 |
Table 1: Residual marine fuel standards
1) Approximate equivalent viscosities (for information only):
Kinematic viscosity (cSt) at 100oC 6 10 15 25 35 45 55
Kinematic viscosity (cSt) at 50oC 22 40 80 180 380 500 700
Sec. Redwood I at 100 F 165 300 600 1500 3500 5000 7000
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