339Engineering Solutions for Dust Release Containment and Air Dedusting
© 2010 Taylor & Francis Group, LLC
hydraulic resistance at the rst cleaning stage, the full pressure of the induced-draft
fan must be increased.
A cowl, even without the suction of dust-laden air, signicantly reduces fugitive
dust emissions into the atmosphere. Dust samples were taken at four measuring sta-
tions (Figure 5.74) along the wind in the breathing zone to determine specic dust
content values. Samples were taken at various boom positions and with aspiration
alternatively turned on and off (Table 5.35).
Surveys were performed before and after repairs on the stockpiling machine that
included improving the cowl sealing and relocating the belt cleaner into the co