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Furnace Oil (FO)

Furnace oil is a dark viscous residual product used as a fuel.

Broadly the application of Furnace Oil as fuel can be classified as follows:-

Industrial Furnaces: Metallurgical furnaces, pottery and brick kilns, cement and lime kilns, glass furnaces etc.

Steam raising: In the processing industry and thermal power stations.

SPECIAL APPLICATIONS:

In marine engines and for power generation.
For drying tea leaves.
In gas turbines for power generation.
As a feedstock for fertilizer manufacture.

THE FURNACE OIL MARKETED IN INDIA CONFORMS TO MV2 GRADE OF IS 1593:1982 (Reaffirmed 1997) SPECIFICATIONS FOR FUEL OIL.

Sr.No.

Characteristics

Test* Method

Requirements for

IS:1448

Grade

Grade

Grade

Grade

 

LV

MV I

MV 2

HV

i)

Acidity, inorganic

P:2

Nil

Nil

Nil

Nil

ii)

Ash, %mass, max.

P:4 (Method A)

0.1

0.1

0.1

0.1

iii)

Gross calorific value, cal/g

P:6 or 7 #

                 Not limited, but to be reportedą

iv)

Relative density at 15/15°c

P:32/P:16

                Not limited, but to be reported ˛

v)

Flash Point, (PMCC) °c, min.

P:21

66

66

66

66

vi)

Kinematic viscosity in centistrokes at 50
                °c, max:          
                 Above
                 Up to

P:25

 

 

 

-
80

 

 

80
125

 

 

125
180

 

 

180
370

vii)

Sediment, % mass, max.

P:30

0.25

0.25

0.25

0.25

viii)

Sulphur, total, % by mass, max.(see note 3)

P:33 or **
P:35

3.5

4.0

4.0

4.5

ix)

Water content, % by vol., max.

P:40

1.0

1.0

1.0

1.0

Note:

  1. Normally the gross calorific value is of the order of 10,000 cal/g.
  2.  Fuel oil for marine uses in diesel engines shall not exceed a limit of 0.99.
  3. Recognizing the necessity for lower-sulphur fuel oils in some specialized uses, a lower limit may be specified by mutual agreement between the purchaser and the supplier.

*Method of test for petroleum and it’s products.
** for referrence and P:35 for routine.
# p:6 for reference and P:7 for routine.

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