Case Study

GKN Aeropspace

Dust Control System

Aerospace Machining Dust Extraction System

MECHON was commissioned to design and project manage a dust extraction system to control explosive dusts generated by a CNC Milling process. The materials being machined by the Client are temperature sensitive, so MECHON paid particular attention to the design approach used for dust capture.

The CNC enclosure was placed under a total extraction of 1,270m3/hr with a system of air-bleeds to give the operator some limited control over the introduction of ambient air into the enclosure (whilst at the same time maintaining the correct conveying velocities in the ductwork system required under the CoSHH regulations). In accordance with the ATEX Directive and DSEAR (2002) regulations, the system design incorporated explosion protection suitable for a dust with a KST value < 200bar.m.s-1. A fully automated reverse jet filter was installed with an explosion relief panel, a strengthened ductwork system and explosion isolation valve to prevent a flame and pressure wave entering the workplace in the event of an explosion.

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