Particulate matter (PM) is microscopic solid and/or liquid airborne contamination that can be man-made or occur naturally. Large amount of PM concentrations are commonly found in industrial working environments which is why it’s critical to understand the effects that PM can have on employees in your workplace.
Particulate Matter - Harmful to Every Body
Humans can stop particles larger than 10qm from entering the body. However, there are smaller particulates that pass the defense system. PM1 passes through the walls of the lungs and enters the blood stream resulting in severe organ damage.
1 out of 9 deaths are linked to air pollution and particulate matter is a large contributor to that.
A machine tool generates oil mist in two ways; through evaporation – as the machining process heats the coolant past boiling point, and from misting – as mechanical movement sprays the lubricant away from the cutting tip.
Some of this oil mist remains within the machine tool enclosure – if one is fitted. But often, oil mist will escape into the wider workshop environment, either through gaps in the housing or as the operator opens the machine doors. Some oil will settle on the floors and walls, creating slip hazards.
But – potentially more harmfully – much of the oil mist and smoke will stay in the air, posing an inhalation risk to anyone in the workshop.
The exact make-up of this contamination will differ depending on the application. Exposure to this cocktail of different man-made and organic materials is detrimental to both human health and the surrounding environment.
High rotational speeds, increased process heat and high-pressure coolants mean machining processes are creating finer and finer aerosols.
The size of particulate generated by different processes and coolants may vary, but PM1 is by far the most common contaminant.
Emissions Results from Metal Working Processes While most oil mist and smoke collectors are only effective in capturing particulate around 10 μm, ScandMist units remove particulate under one micron in diameter.
By combining oil coalescing filters and a final HEPA filter @ 0.3 μm efficiency, the output air from ScandMist is surgically-grade clean. This allows employers to establish safe, clean air working conditions.
While most oil mist and smoke collectors are only effective in capturing particulate around 10 μm, ScandMist units remove particulate under one micron in diameter.