Figure 5 : Operational view of local exhaust ventilation .
On-tool LEV
On-tool LEV systems can include a shroud , an on-tool hose attachment and a vacuum extraction system . The dust or mist is collected within the shroud and is then drawn into the hose attachment to the vacuum , where it is extracted , filtered and discharged . When correctly designed and used a LEV system can both capture and contain dust or mist generated from engineered stone ( Figure 6 ).
Figure 6 : A worker cutting / grinding with on tool dust extraction .
Managing the risks of respirable crystalline silica from engineered stone in the workplace - Code of Practice 35 of 57