Environmental Fallout Dust Monitoring Equipment and Devices

DustWatch CC - South Africa

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Fallout Dust Monitoring Practical and Theoretical Training - 1 or 2 day Training Course - Contact us for more information

Courses run in the 1st and 3rd week of each month as required.

Fall-out Dust Monitoring Methods

Fall-out dust monitoring is a legal requirement under the pollutions act of 1975.  The act states that "......", and this means that all manufacturing concerns are responsible for the dust at the perimeter of the area.  

If the dust levels measured are above the specified limits then engineering solutions need to be implemented to decrease the fall-out dust levels.

There are many factors that effect fall-out dust namely:

  1. Rainfall, because dust is attracted to the water vapour in the atmosphere and it then precipitates along with the rain.

  2. Wind, because dust is carried by the wind and will only fall-out when there is absolutely no wind.

  3. Geographical features (take comma away) or any other factor that could influence the rainfall or the wind, for reasons mentioned above.

  4. Pollens and small insects because these add to the dust levels and precipitate out in the same way.

  5. "Dusty activities" (the most influential factors) such as dropping material from a conveyor onto a pile without considering the fall height. This and countless other activities are necessary in the mining and other industries and the challenge, once dust problems are detected, is to engineer them away.


Generally finer suspended dust (2.5m > 10m) will remain airborne almost indefinitely due to the dynamic nature of the air currents and thermal activities on any given day, even if there is no wind at all.  Particulate larger than this range will settle on a very still day and this material can be collected.

The unit that we use to capture this dust is the DustWatch, designed and patented in South Africa by Gerry Kuhn Environmental and Hygiene Engineering.  

We offer the full service package or parts of the package as the client requires.  We will also assist in getting existing fall-out monitoring systems up and running again.  Obviously the full package allows the client to sit back and receive a report every month regarding their fall-out dust.


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  Last modified: May 08, 2018

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