Jual Obat Aborsi Sorong, Wa : 0822/2310/9953 Apotik Jual Obat Cytotec Di Sorong
Safety at grain terminals
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Grain Dust Explosion
……Ignorance is not Bliss
Dust Explosion of Wheat DustDust Explosion of Wheat Dust
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What Causes Dust Explosion
1. Dust Cloud at Particular Concentration
2. A Minor Spark
3. Source of Oxygen
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Possible Locations of Dust Cloud
Feed Hoppers at Tipper Area
Feed Tower
Tunnels
Process Tower
Inside Silo or Hopper
Bag Filter
High Pressure Water Spray
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Spark Sources:
3. Batteries
All lithium Batteries if dropped from a
certain height produces spark hence
must not be allowed. Examples are;
Cell phone batteries
Camera Batteries
Video Recorder Batteries
Laptop Batteries
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Spark Sources:
4. Grain Spoilage Inside Silo
Water leakage inside silo results in infestation,
mold growth, fermentation etc. of Grain. This
grain spoilage result in making a lump of grain
mass. This lump size keeps on increasing
gradually and inside at the center temperature
keeps on increasing and may become very-
very hot. When we start discharge from Silo
this grain mass breaks and may result in
Spark. Since while discharging silo inside is full
of inflammable dust, fire immediately starts
and there may be a explosion
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Spark Sources:
5. Online Maintenance Works
Online Maintenance works must never
be attempted in Grain Terminal
No Cutting and No Welding
No hammering and no Poking with
Iron Bars
Any spark or flame may result in
either fire or explosion
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Spark Sources:
6. Ordinary Lights
Only explosion proof lighting should
be used at all Dust Prone Areas
Non-explosion Proof Lights may
generate spark which may lead to
explosion
Care should be taken while doing
maintenance on these lights
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Spark Sources:
7. Electric Panels
Electric Panels could be a source of
spark if there are any loose
connections
Electric Panels must not be located in
Dust Prone Areas if they do not have
proper protection
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Major Safety Checks at Different
Areas
Elevators
Check for Broken or Damaged Bearing
Check for Damaged Steel Bucket
Check for Loose Elevator Steel Bucket
Check Elevator Belt Misalignment
Check that Explosion vent is properly
installed and working
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Major Safety Checks at Different
Areas
Screw Conveyors
Check for Broken or Damaged Bearing
Check for Damaged Hanger Bearing
Check for Screw (Scroll) Touching Casing
Check for Intactness of Scroll welding
with Hollow Shaft
Check for any Iron Piece entrapped
inside Screw Conveyor
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Major Safety Checks at Different
Areas
In Tunnels and Dust Prone Areas
Broken Roller / Idler Bearings
Non-Flame Proof Lights
Lithium Battery e.g. cell phone Batteries
Hammering Spouts
Poking with Iron Rods
Matches and Cigarettes
Shoes with Iron Studs
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Major Safety Checks at Different
Areas
Dust Filters
Check if all the filter bags are properly
earthed
Check that Explosion vents are properly
installed and working
Check that no manhole is open
Check that there is no dust leakage
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Major Safety Checks at Different
Areas
Usage of High Pressure Water
High Pressure Water results in
generation of lot of dust thus increasing
the dust concentration to a point where
it may require a minor spark to explode
This happen mainly in enclosed spaces
hence High Pressure water usage must
be restricted and carefully used
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Dust Explosion – Awareness Works
Dust Explosion can never happen if
proper care it taken while operating
and maintaining the facility.
General Awareness of Dust Explosion
among operating and maintaining
staff can avoid Dust Explosion for
ever
BE SAFE….SAFETY FIRST