How to Perform a Disappearing Act With Dust Control Systems

By: Mark Sierra Click author's name for more of his/her articles

The Occupational Safety and Health Administration (OSHA) is a useful resource on dust control. In Chapter 3 of the OSHA handbook, it explains why dust should be controlled, the various forms of dust control systems that are available, and how to select the correct one, and how to design a water spray system to control dust.

Some reasons why dust should be controlled are to reduce and prevent the chance of dust explosions and fires. Also the reduction of accidents is greater with better visibility of the workplace. Decreasing dust will also decrease the wear and tear on equipment and minimize maintenance at the same time. For people in the workplace, less dust will require less protective gear that is needed as well as reduce the possibility of foul odors, which can have a negative effect on productivity.

There are three basic types of dust control systems that are in use today that companies can select from. There are systems that utilize a ventilation system in a building to remove or capture dust particles. Other types include a wet dust suppression systems at the ground level that operate using water to dampen the soil or other small particles that make them too heavy to become airborne. Airborne dust can also be thwarted with a water system where a spray can attach with the particles making them to fall to the ground.

There are four commonly used components to most industrial dust control systems. There is a capturing mechanism at the origin of the dust. This is usually an exhaust hood. Attached to this hood is duct work that carries the dust to a dust collector. At the collector, the dust is captured from the air. At the end of the duct work, after the dust is removed from the air, is the fan and motor which is the power behind the airflow.

The main components of a water spray system include the spray nozzle, a hose that supplies the water, and, of course, the water source. The most important part is the spray nozzle. This is where the spray pattern and velocity of the spray are regulated for a water spray dust control system.

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