Hazardous Dust

Hazardous Dust Vacuum Cleaners are designed to protect users against exposure to hazardous dusts in the workplace. The machinery directive 2006/42/EC defines the safety levels offered by industrial vacs used in non ATEX zones. Hazardous dust is defined as a “non-radioactive dust that is hazardous to health if inhaled, swallowed or in contact with the skin”.

Our range of hazardous dust vacuums meet the industry requirements offering optimal safety standards with a focus on three key elements; air filtration, containment of dust and methods of disposal.

Filtration and containment of dust

There are three classifications of hazardous dust and associated vacuum requirements:

L CLASS: Moderate risk with vacuum filtration of over 99% of dust with a grain size of under 2 microns.

M CLASS: Medium risk with vacuum filtration of over 99.9% of dust with a grain size of under 2 microns.

H CLASS: High risk with vacuum filtration of over 99.995% of dust with a grain size of under 1 micron including carcinogenic dusts or dusts contaminated with either carcinogens or pathogens.

L class machines cannot be upgraded to M or H class simply by upgrading to an M or H class filter as the vacuums themselves have additional features to improve safety when handling medium/high class hazardous dusts. It is also important to understand that “HEPA” does not mean H Class. HEPA is a brand name and has a spectrum of filtration efficiencies ranging from SEMI-HEPA E10 Class at an average of >85% filtration through to ULPA U17 Class delivering an average filtration of >99.999995%, with a common middle ground of HEPA H14 Class delivering >99.995% filtration on average.

To give our customer’s peace of mind, the filter cleaning characteristics of all Nilfisk Hazardous Dust Vacuum cleaner models are guaranteed by tests performed on both the machine itself and on each of the filters installed. Furthermore, as well as the above tests carried out by Nilfisk, third party bodies also carry out ad-hoc testing to ensure compliance and performance continuity. All Nilfisk vacuums classified and certified as H class are issued with an efficiency certificate.

Disposal and Storage of Hazardous Dust

The recovery and filtration of hazardous dust is only one element of the handling process, and particularly with M and H class dusts, great consideration must be given to the handling and disposal. Nilfisk Hazardous Dust Vacuums incorporate disposal features to aid in this process, such as safe bags or bag-in-bag-out systems, appropriate for the class of hazardous dust being recovered.

Our range of industrial vacuums for the recovery of hazardous dust range in size from small compact 30 litre units such as the ATTIX 33 – ideal for tradespeople moving from site to site, through to large, trolley mounted vacuums such as the Nilfisk S2 and S3 with a 100 litre container capacity. All can be tailored with a range of accessories to meet individual requirements.

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