By its very nature the dust generated from shot blasting brings with it a significant risk of abrasion damage to the filtration equipment. If the system is correctly designed and operated the unbroken shot should not be drawn into the filter however dislodged  parent material (as dust) and broken shot are certain to be drawn into the filter. Fragments of broken shot or shattered beads (from bead blasting) have sharp edges and enter  the collector with considerable velocity. AAF filters have either a robust inlet baffle or have a purpose designed abrasion resistant inlet to deal with the risk of abrasion damage.  For stress relieving of welded aluminium fabrications shot peening using glass, ceramic or plastic beads is often employed. For this application the AAF RotoClone N has been successfully applied with ATEX compliant features to deal with the explosion risk presented by aluminium dust released during the process.