Extraction systems

Industry Solutions
Metal industry

Cutting, sawing, milling, grinding, polishing, soldering, welding – common processing methods in the metal industry. This produces chips, dust or smoke. Extracting and filtering these dusts is essential due to legal regulations such as the MAK values.

Extraction systems from L+M are used for a wide variety of connections, such as for machine tools, laser, plasma and flame cutting machines, blasting or spraying systems, powder coating, brushing or polishing machines, metal spraying machines or welding robots. For dust-free production.

Definition of MAK values

The MAK value is the maximum permissible average concentration of a gaseous, vaporous or dusty working substance in the air, which, according to current knowledge, does not generally endanger health when exposed during a working time of 8 hours per day and 42 hours per week, even over longer periods.

Short-term limits

For locally irritating substances, the short-term limit value for a 15-minute sampling generally corresponds to the shift mean value. This means that the MAK value for these substances must not be exceeded, even when measured over a period of 15 minutes. In the report “Limit values at the workplace”, which Suva publishes annually, the short-term limit value corresponding to the shift average value is given for such substances under the heading “Short-term limit values”, supplemented by the note “15 min” for the time limit. For substances with a short-term limit value above the MAK value, the short-term limit values are given as an average value over a period of more than 15 minutes. The interval between the four permitted exposure peaks per shift should be at least one hour. The 8-hour average value must always be observed.

Further information can be found in the report Limit values in the workplace, Suva order no. 1903.