Identifying Types of Dust
The first step of any DHA is to identify and record the various dusts handled throughout your factory. Dust is usually generated from three primary sources:
- Raw ingredients which come in a powder form (such as flour or sugar)
- Solid materials which when processed generate a certain amount of dust
- A chemical process which converts a liquid into a powder
To define these dusts, the facility’s process must be understood. For example, consider where dust is being emitted from the process or where raw materials are being introduced into the process.
It’s common to have multiple types of materials form a mixture, making the definition of certain dust types more difficult to define. For example, a dust collector in a food manufacturing plant may be connected to equipment conveying flour, sugar and other ingredients.
In these scenarios, record the contents of the mixture, which will likely require dust testing to determine its explosibility properties.