Grains, Food and Feed Mill Industries

Importance of Dust Monitoring

Explosions in the Grains, Food & Feed Mill industries are often severe, involving loss of life and exorbidant damage to property. Over the last 35 years, there have been over 500 explosions in grain handling facilities across the United States, which have killed more than 180 people and injured more than 675. Grain dust is the main source of fuel for explosions in grain handling. Grain dust is highly combustible and can burn or explode if enough becomes airborne or accumulates on a surface and finds an ignition source (such as hot bearing, overheated motor, misaligned conveyor belt, welding, cutting, and brazing). OSHA standards require that both grain dust and ignition sources must be controlled in grain elevators to prevent these often deadly explosions.

The milling process consists of several stages including storage, cleaning, crushing, milling, sifting and mixing. The product is moved through the different stages of the process with pressure transfer. As in any milling process a lot of dust is produced and must be managed carefully to limit any dispersion into the facility. Good housekeeping and a clean environment are most important to the plant manager to avoid any microbiological contamination. The fear is that a filter leak could cause undesired emission of a product into an unseen place, such as the roof, which could begin to accumulate. If that accumulated dust is not cleaned up immediately it could cause unwanted microbiological growth or attract rodents or insects. Places of measurement are found after the filtration systems in the mill as well as bakeries.

VarSci has a solution for all of these points. Our products may help mitigate the risk of fugitive dust explosions and optimize performance and improve overall efficiency of dust collection systems. See the link below for a specific case study from a company in your industry.

Case Studies