4.16.24 21st Century Movements for Black Lives.pptx
Imc comdust presentation revised 092310
1. Interior Maintenance Company, Inc.
Jon Barrett- Business Development Specialist
Phone: 267-886-7903 Email: Jon@imc.cc
Specialists in Industrial and Commercial Cleaning
services including Combustible Dust, High Surface,
HVAC Air Duct System, Dust Collector, and Lab Fume
Hood System cleaning, serving the United States.
Copyright 2010 Interior Maintenance Company, Inc. www.imc.cc
6. Show Me The Dust!
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Significant accumulation of dust within an HVAC duct system.
7. Treat All Dust as if they are Combustible
Dust, Unless Tested!
• Have a Sampling of Dust Tested, for
Kst Value!
8. Combustible Dust KST Value Chart
When looking to protect your equipment against a dust explosion, it is critical that you know the
Kst value of your material. Kst, is the dust deflagration index, and it measures the relative
explosion severity compared to other dusts. This is a relative index, however, and any material
with a Kst value greater than zero is considered to be at risk of an explosion. In fact, sugar has a
relatively low Kst value, but was the fuel for for a massive explosion in 2008 that claimed the lives
of 14 workers
1
.
Examples of Kst Values for Different Types of Dusts
2
Dust explosion
class*
Kst (bar.m/s)* Characteristic* Typical material**
St 0 0 No explosion Silica
St 1 >0 and ? 200 Weak explosion
Powdered milk, charcoal, sulfur, sugar
and zinc
St 2
>200 and ?
300
Strong explosion
Cellulose, wood flour, and poly methyl
acrylate
St 3 >300
Very strong
explosion
Anthraquinone, aluminum, and
magnesium
The actual class is sample specific and will depend on varying characteristics of the material such
as particle size or moisture.
* OSHA CPL 03-00-008 - Combustible Dust National Emphasis Program.
** NFPA 68, Standard on Explosion Prevention by Deflagration Venting.
11. Initial Combustible Dust Hazards
• Manufacturing facilities need to Test/Evaluate
Combustible Dust/Particulate, in all areas with
the presence of dust. MSDS do not address
the Combustible Dust Hazard.
• Most manufacturing facility's Housekeeping or
Custodial staff are not typically trained, nor
equipped for safe cleaning procedures, proper
containment, recycling, and disposal of
Combustible Dust/Particulate.
www.imc.cc
13. Facility Awareness
• Combustible Dust must be contained at
the source.
• A simple spark from a Forklift contacting a
concrete floor, could set off an explosion.
• Static Electricity may also set off an
explosion.
• Electrical systems need to be evaluated.
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16. Why 1/32 of an Inch of Dust?
• Any amount of Dust accumulation, on any surface
or piece of equipment, acts as an insulator.
• This added insulation of dust may cause
manufacturing, electronics and other equipment to
heat up and breakdown.
• Added insulation of dust may also cause Electric
and Utility costs to increase and may cause Fire
Suppression Systems to fail. Is that a high Return
On your Investment?
• Insurance Companies require a clean facility and
equipment to keep rates down and to ensure
decreased liability from hazards.
www.imc.cc
17. Dust Collectors
• Dust Collectors- designed to capture dust and
particulate at the source.
• So why so much dust?
1) Broken or Leaking seals/gaskets
2) Clogged ductwork/piping
3) Filters and bags are clogged, torn,
undersized, or “missing”
4) Not enough CFM pull, from exhaust fans
5) Preventative Maintenance Program/
Housekeeping is non-existent
www.imc.cc
21. HVAC Systems
• HVAC Air Conveyance Systems- designed to filter and
deliver conditioned air.
• So why so much dust in HVAC Systems?
1) Dust Collector and other production equipment
emitting heavy concentrations of dust and
particulate into the air.
2) Clogged ductwork/piping
3) Filters are clogged, undersized, not installed
properly, torn or “missing”
4) Not enough CFM pull, from exhaust fans
5) Preventative Maintenance Program/
Housekeeping is non-existent
www.imc.cc
27. Lab Fume Hoods
• Lab Fume Hoods- designed to remove carbon,
smoke, particulate, and vapors from lab workspaces.
• Why decreased draw or decreased face velocity?
1) Dust Collector emitting heavy concentrations
of dust and particulate into the air
2) Clogged Fume Hood, ductwork/piping
3) Filters are clogged, undersized, or “missing”
4) Not enough CFM pull, from exhaust fans
5) Preventative Maintenance Program/
Housekeeping is non-existent
www.imc.cc
30. Heat Exchanger
• Heat Exchanger and Portable heaters- designed to heat
air in designated work area space.
• Why so much dust on heat exchanger or not enough
heat?
1) Dust Collector emitting heavy concentrations
of dust and particulate into the air
2) Airborne Dust in high concentrations
3) Improper installation of Heat Exchanger (too
close to ceiling, or another surface
4) Preventative Maintenance Program/
Housekeeping is non-existent
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32. Health Concerns and Indoor Air Quality,
with Any Dust
• Lungs and heart- become congested, decreased
blood flow to body. Many types of diseases and
disabilities to occur, (Silicosis, Black Lung), short
term and long term exposure, increase in Sick Days
• Eyes- unsafe working conditions, may lead to
accidents, increase in Sick Days
• Fatigue- workers may decrease productivity, may
lead to an accident, increase in Sick Days
• Insurance- Increase in Workmen’s Compensation,
Short term and Long term disability, Increase in
Liability insurance
• PPE- Increase use of proper PPE, may decrease
sick days
www.imc.cc
34. Maintenance Issues With Dust
• Lighting is decreased
• More Electric or Power is required, as a
result - Utilities are increased
• Decreased safety awareness, lower
employee morale
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35. Combustible Dust Cleaning Per
NFPA 654
• Prevent ANY Dust Clouds!
• Do NOT use Compressed Air!
• Do NOT Broom Sweep!
• Use Certified, Tested, HEPA Explosion
Proof Vacuums!
• Foam Cleaning can be used, for Certain
Dusts/Areas- (But NOT to be used for
ANY Metal Dusts!)
www.imc.cc
36. Treat All Dust as if they are Combustible
Dust, Unless Tested!
• Have a Sampling of Dust Tested, for
Kst Value!
www.imc.cc
37. Clean Up the Dust, and Go
Home Safely!
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38. About IMC
Please contact IMC to provide a free estimate
regarding any of your combustible dust
cleaning needs.
Jon Barrett can be reached at
(267) 886-7903 or Email: Jon@imc.cc
He is N.F.P.A. and Fire Protection Research
Foundation trained for Explosive Dust
Cleaning, and Chilworth Technology trained for
Dust Explosion Inspection and Cleaning.
Thank you for your time and consideration!
www.imc.cc
Hinweis der Redaktion
Specialists in Preventing Secondary Combustible Dust explosions in addition to assisting in achieving OSHA regulatory compliance
MSDS do not address the ignition sensitivity and explosion severity the Combustible Dust Hazard.
Electrical systems need to be evaluated whether their safe for use in a potentially explosive combustible dust environment
Great Slide bringing up the hazard of letting up to 1/32” accumulate. Also additional dust layers lower the smoldering temperature
Great illustrative slide
Where are the explosion ventilation panels in these slides?
This is great mentioning HVAC
This slide is sort of hazy. Send me the original picture and I’ll clean it up
Another hazy slide. Please send the original for editing
Another great addition mentioning Lab fume hoods
This slide also needs editing. Please send original and I’ll edit.
