Vacuum Dust Collection Systems

When wet methods cannot be used for controlling silica dust, a good alternative is to use a vacuum dust collection (VDC) system. Stationary masonry saws with vacuum dust collection systems are widely available and can capture a large amount of dust.

With these types of systems, a vacuum pulls dust directly from the cutting point through special fittings connected to the saw. Alternatively, a dust collection device may be connected to the back of the saw. To work properly, a dust collector (which is basically an exterior hood) mounted to the back of the saw needs high exhaust airflow between the saw blade and dust collector.

When operating a vacuum dust collection system, follow these practices:

• Ensure that all hoses are clean and free of cracks.
• Make sure that appropriate filters and dust bags are in good condition, and are changed or emptied as needed.
• Check the equipment daily for signs of poor dust capture or dust leaks.
• Use HEPA filters for maximum dust control.
• Erect baffles on each side of the saw to improve dust capture performance by the rear-mounted dust collection devices (exterior hoods).
• Review the manufacturer's operating specifications and recommendations for your equipment.

To learn more about Construction Silica visit our Construction Silica Safety Online Training web page.