Furnace Oil
IS : 1593 - 1982
Table 1 Requirements for fuel oils (Clause 3.3)
| S. No. | Characteristic | Requirement For | Method of Test | |||
|---|---|---|---|---|---|---|
| Grade LV | Grade MVI | Grade MV2 | Grade HV | Ref to [P : ] of IS :1448* | ||
| (1) | (2) | (3) | (4) | (5) | (6) | (7) |
| Acidity, inorganic | Nil | P : 2 | ||||
| Ash, percent by mass, Max | 0.1 |
P : 4 (Method A) |
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| Gross, calorific value |
Not limited, but to be reported (See Note 1) |
P : 6 (for reference) and P : (for routine) |
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| Relative density at 15/15oC |
Not limited, but to be reported (See Note 2) |
|||||
| Flash point, [Pensky martens (closed)], Min | 66oC | P : 21 | ||||
| Kinematic viscosity in centistokes at 50oC, Max | 80 | 125 | 180 | 370 | P : 25 | |
| Sediment, percent by mass, Max | 0.25 | P : 30 | ||||
|
Sulphur, total, percent by mass, Max
(See Note 3) |
3.5 | 4.0 | 4.0 | 4.5 |
P : 33 (for reference) and P : 35 (for routine) |
|
| Water content, percent by volume, Max | 1.0 | P : 40 | ||||
Note1:Normally the gross calorific value is of the order of 10 000 cal/g.
Note2: Fuel oil for marine uses in diesel engines shall not exceed a limit of 0.99.
Note3: Recognizing the necessity for low-sulphur fuel oils in some specialized uses; a lower limit may be specified by mutual agreement between the purchaser and the supplier.
Effective 01.04.10 FO/LDO supplies to rail fed customers is through BTPN (8 wheeler) rakes only since railways has withdrawn conventional (4 wheeler) rakes from circulation.
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