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Safety Fuse:
Safety Fuse is one of the accessories used for blasting explosives in
conjunction with an ordinary detonator; it may be defined as a device,
which conveys flame at a control, predetermined burning speed to ignite
the explosives charge in detonator.
In the view of a enormous risk involved in carrying out blasting
operation in open cast coal mines, quarries or in demolishing jobs, two
types of firing devices are used, to ensure safety of the personnel
handling the operation, blasting is done with either electrically
ignited detonator by remote control operation or with detonator ignited
by a flame carried by a safety fuse cord at regulated speed without any
lateral propagation of sparks or flame.
Safety fuse essentially consists of a core of bright hard well
granulated gunpower grains, free from dust & grit, adequately
enveloped by cotton & jute textiles yarns and intermediate water
proofing material. The water proofing material are designed in such a
way that it would not contribute for any undue sparks emitting from the
external surface and also would not cause any lateral ignition.
The Present plant, the oldest and still the latest is the only one of
its kind in India probably in the world. Our Product Range covers the
full spectrum of requirements of diameter and water resistance.
Name |
Construction |
Colour |
Diameter in mm |
Burning speed Sec/mts |
Packing |
Best Before |
Suggested for use in |
Glue Sump Fuse |
Gun Powder Core
in Jute, Bitumen shall be in uniform thickness |
Blue |
4.8 ±
0.3 |
100 - 120 |
150 Nos 10 Mts
Coil 1500 mt / Case |
2 Years from date
of Mfg. |
Normal Dry Conditions |
Glue Plastic Fuse |
Gun Powder Core wraped in
two Jute layers with Bitumen & Polythene Coating
|
Blue |
4.8 - 5.2 |
110 ±
10 |
10mts Coil 1500 mt / Case |
2 Years from date of Mfg. |
Very Wet and damp Conditions |
| Alisa Safety
Fuse |
Gun Powder Core in Jute, Bitumen
with antistatic, Poly Coating, with uniform thickness
free from visible flaws |
Yellow |
5 ±
0.2 |
120 - 145 |
170 mts per reel / case |
2 Years from date of Mfg. |
For Export and 24 hours under
Water Condition |
Note:
| Cord Load |
:
|
4.2 gms / Meters ±
10% |
| Cap Sensitive |
:
|
25 mm. |
| Lateral Transmission of flame |
:
|
absent |
| Storage |
:
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Safety fuse should in dry place protected from excessive
heat or extreme cold and should not be exposed to oil
or other solvents. |
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