This document defines different types of dust and dust suppression systems. It explains that respirable dust is the most dangerous as it can penetrate deep into the lungs. A dust suppression system helps improve workplace quality by keeping dust from becoming airborne, allowing dust to be reused, reducing maintenance costs, protecting equipment and workers' health, minimizing fire risks, and improving indoor air quality. Dust suppression systems provide several benefits for workspaces where dust is produced.

1. Dust suppression

2. Dust
• Finely divided solids that may become airborne from
the original state without any chemical or physical
change other than fracture.

3. Dust Terms
• Respirable dust—dust particles small enough to penetrate the
nose, the upper respiratory system, and deep into the lungs
– Stay in the body because they are too deep to be eliminated by the
body’s natural mechanisms
– Most dangerous because can collect in the lungs
– 10 microns or smaller
• Inhalable dust—dust that is trapped in the nose, throat, and
upper respiratory tract
– 100 microns or smaller, but can be eliminated by the body
• Total dust—all the dust particles in the air, regardless of size or
composition
– Includes both inhalable and respirable fractions
• Nuisance dust—total dust in the air, but defined by OSHA as dust
that contains less than one percent quartz
– Not considered harmful when exposure is kept below limits set by
regulating agencies

4. Dust Suppression System
• A system put in place to improve the quality
of the workspace
• Dust suppression system has several benefits:
see benefits on the remaining slides.

5. Reuse of Dust
• Certain type of dust such as saw dust can be
reused and recycle. The suppression system
keeps the air clean and collect the dust

6. Maintenance Cost
• Less labor to clean the machine if there is no
airborne dust. The suppression system keeps
the machine clean so it function more
efficiently.

7. Equipment Safe
• Dust that is airborne settles on the equipment
and can cause damage. This mean frequently
repair and replacement.

8. Workers Health
• Industries where processes give out dust are
required by the law to install suppression
systems to protect worker health.

9. Fire
• Certain dust type are inflammable. Installation
of dust suppression minimize the risk of fire.

10. Indoor Quality
• The dust remains contained in one room and
does not spread. This way the indoor air
quality improves as all airborne particles are
restrained to a single room.