Low Sulphur Heavy Stock (LSHS)
Low Sulphur Heavy Stock (LSHS)
is a residual fuel processed from indigenous crude. This fuel is in lieu of
FO in the same applications where furnace oil is suitable.
The main difference with LSHS
and FO is in the form of higher pour point, higher calorific value and
lower sulphur content in LSHS. Presently it conforms to IS:11489-1985 grade
I(enclosed).
As this fuel has higher pour
point than that of FO it requires special handling arrangements. LSHS is
handled hot at all stages and is maintained at 75OC. Special
care is also taken so that no 'boil over' of the product takes place in the
storage tank.
Sulphur Content -
The main advantage in the use of LSHS lies in its low sulphur content. The
life of equipment used is extended since the extent of corrosion both at
high and at low temperature, is reduced very much. Apart from that, it is
also advantageous from the environmental pollution point of view. Because
it will emit lesser quantity of sulphur dioxide.
Calorific Value - The gross
calorific value of LSHS is more than that of Furnace oil. So, the
consumption of fuel oil will be reduced with the usage of LSHS.
Viscosity
- LSHS is a low viscosity fuel oil at handling temperature when compared
with Furnace oil. It is measured at 100OC.
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Conforms to IS 1459 :1974
Reaffirmed 2001 Specifications for Kerosene
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Safety Information :
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- Reactivity Data -
Chemically stable and incompatible with strong oxidizers. Does not React
vigorously with common materials but can react with oxidizing agents
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Health Hazard Data
- Routes of entry may be through inhalation/ ingestion/ skin/ eye.
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Effects of Exposure /Symptoms :
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Ingestion
may cause spontaneous vomiting, irritation of mouth throat and gastro
intestinal tract.
On prolonged
exposure it makes skin dry, erythema oil acne, development of warty growths
which may lead to skin cancer, skin cracking and contact dermitites. As it is
handled at elevated temperatures, skin contact could produce burns.
On exposure to eye
it may cause light to moderate irritation.
Ingested , do not induce vomiting
as it may lead to chemical pneumonitis. Remove contaminated clothing
immediately and wash affected area with water and soap. If eyes are affected,
irrigate liberally with copious amounts of water and seek medical advice
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Emergency Treatment :
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Inhalation - remove victim to
fresh air. Give artificial respiration if necessary.
Ingestion - do not induce
vomiting. Paraffin olive oil or some other vegetable oil may be given orally
to retord absorption of Kerosene.
Gastric damage and induction and
vomiting not advisable because of the possibility of the development of
chemical from acpission peneumonia of Kerosene
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Handling and Storage Precaution :
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Avoid contact with liquid or
vapours. To use gumboots while handling the product.
The fire fighting media to be used is foam, DCP/CO2.
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Specification of LSHS :
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Sr.No
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Characteristics
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Requirements
Grade 1
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Test
Method
[P:] of IS:1448
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1
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Pour point, OC, Max
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66
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[P:10]
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2
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Flash point, (PMCC), OC,
Min
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76
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[P:21]
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3
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Kinematic viscosity, mm2/s at
100OC, Max
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To be reported
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[P :25]
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4
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Sp. Gravity at 15OC
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To be reported
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[P:32]
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5
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Gross calorific value, cal/ gm
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To be reported
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[P:6]
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6
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Acidity, Inorganic
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Nil
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[P:2]
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7
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Ash, % by Mass, Max
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0.1
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[P:4] Method A
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8
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Sediment, % by mass, Max
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0.25
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[P:30]
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9
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Sulphur, total, % by mass, Max
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1.0
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[P:33]
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10
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Water content, % v/v, Max
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1.0
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[P:40]
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Conforms to BIS specification
IS:11489-1985
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