World Grain - November 2023 - 40
GRAIN OPERATIONS
Grain dust explosion
prevention tips
Housekeeping and sanitation are at the top of the list
by Carol Jones
Controlling grain dust is an important part of good elevator
management. Grain dust emission control is expensive, but so
are grain dust losses.
Besides the fact that control of grain dust emissions is required
by the US Clean Air Act, keeping grain dust in the grain
mass by controlling grain dust emissions is simply a good
business practice. In addition, maintaining a safer, healthier,
more profitable workplace and elevator neighborhood is a
characteristic of a quality elevator operation.
Over the past decade, an average of 7.8 agricultural grain
dust explosions were reported per year in the United States,
according to statistics from Purdue University. Over the most
recent eight-year period, ending in 2022, a total of 8 deaths
and 55 injuries were linked to grain dust explosions, along
with millions of dollars of damage to equipment and property.
Some of these events are spectacular and make the news,
although most do not. Even the small explosions cause
equipment damage, elevator downtime and potential for
worker injury.
40
Grain dust explosion elements
For a grain dust explosion to occur, four basic physical elements
must be present:
1. Fuel - very small particles of dry grain dust from wheat,
milo, oats, barley, wheat or oat flour, corn starch, etc.
Grain dust must be suspended in the air to create an
explosion. Layers of dust in a confined space provide
explosive potential.
2. Oxygen - adequate air supply with normal oxygen levels.
3.
Confinement - a vertical elevator leg casing or housing,
an enclosed drag conveyor, a dust bin, a down
spout, an aeration duct, a basement tunnel, a bin deck
gallery, a bin, a silo, etc.
4. Ignition source - an overheated bearing in an elevator
leg boot, head or conveyor; an elevator leg belt rubbing
against leg sidewall casing; an electrical arc from a nonexplosion
proof electrical device; an electrical short;
phosphine pellets or tablets exploding in a wet aeraNovember
2023 / World Grain / World-Grain.com
©PiyawatNandeenoparit - stock.adobe.com
http://www.World-Grain.com
World Grain - November 2023
Table of Contents for the Digital Edition of World Grain - November 2023
World Grain - November 2023 - Intro
World Grain - November 2023 - 1
World Grain - November 2023 - 2
World Grain - November 2023 - 3
World Grain - November 2023 - 4
World Grain - November 2023 - 5
World Grain - November 2023 - 6
World Grain - November 2023 - 7
World Grain - November 2023 - 8
World Grain - November 2023 - 9
World Grain - November 2023 - 10
World Grain - November 2023 - 11
World Grain - November 2023 - 12
World Grain - November 2023 - 13
World Grain - November 2023 - 14
World Grain - November 2023 - 15
World Grain - November 2023 - 16
World Grain - November 2023 - 17
World Grain - November 2023 - 18
World Grain - November 2023 - 19
World Grain - November 2023 - 20
World Grain - November 2023 - 21
World Grain - November 2023 - 22
World Grain - November 2023 - 23
World Grain - November 2023 - 24
World Grain - November 2023 - 25
World Grain - November 2023 - 26
World Grain - November 2023 - 27
World Grain - November 2023 - 28
World Grain - November 2023 - 29
World Grain - November 2023 - 30
World Grain - November 2023 - 31
World Grain - November 2023 - 32
World Grain - November 2023 - 33
World Grain - November 2023 - 34
World Grain - November 2023 - 35
World Grain - November 2023 - 36
World Grain - November 2023 - 37
World Grain - November 2023 - 38
World Grain - November 2023 - 39
World Grain - November 2023 - 40
World Grain - November 2023 - 41
World Grain - November 2023 - 42
World Grain - November 2023 - 43
World Grain - November 2023 - 44
World Grain - November 2023 - 45
World Grain - November 2023 - 46
World Grain - November 2023 - 47
World Grain - November 2023 - 48
World Grain - November 2023 - 49
World Grain - November 2023 - 50
World Grain - November 2023 - 51
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World Grain - November 2023 - 53
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World Grain - November 2023 - 55
World Grain - November 2023 - 56
World Grain - November 2023 - 57
World Grain - November 2023 - 58
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World Grain - November 2023 - 60
World Grain - November 2023 - 61
World Grain - November 2023 - 62
World Grain - November 2023 - 63
World Grain - November 2023 - 64
World Grain - November 2023 - 65
World Grain - November 2023 - 66
World Grain - November 2023 - 67
World Grain - November 2023 - 68
World Grain - November 2023 - 69
World Grain - November 2023 - 70
World Grain - November 2023 - 71
World Grain - November 2023 - 72
World Grain - November 2023 - 73
World Grain - November 2023 - 74
World Grain - November 2023 - 75
World Grain - November 2023 - 76
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https://digital.world-grain.com/sosland/wg/world-grain-september-2022
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https://digital.world-grain.com/sosland/wg/world-grain-april-2022
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https://digital.world-grain.com/sosland/wg/world-grain-january-2022
https://digital.world-grain.com/sosland/wg/world-grain-december-2021
https://digital.world-grain.com/sosland/wg/-world-grain-november-2021
https://digital.world-grain.com/sosland/wg/world-grain-october-2021
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https://digital.world-grain.com/sosland/wg/world-grain-august-2021
https://digital.world-grain.com/sosland/wg/world-grain-july-2021
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