 |
This
image shows a "fishtail" transition conveying exhaust air from a hood. The
exhaust duct is disconnected at a flanged connection point.
Small leaks in exhaust
ducts compromise the efficacy of individual hoods and many such small leaks can compromise
the entire exhaust system. |
 |
This
image shows a disconnected duct exhausting a screen. |
 |
This image shows an erosion hole in an exhaust duct that provides local source capture of
particulate.
Ducts should be inspected regularly for defects, and all defects should be
promptly repaired. |
 |
This
image indicates where return belt rollers have acted as belt scrapers and process
materials have unintentionally collected underneath the conveyor belt.
If upstream
conveyor belt scrapers were adjusted properly, these dust piles would not exist. |
 |
This
shows process materials unintentionally collecting underneath a cage mill and its conveyor
belt.
If local source capture hoods for the mill and belt were working properly, these
dust piles would not exist. |
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