Exhaust ventilation can be used to remove flammable and toxic fumes, vapors, and particulates from confined spaces.
Figure 3: Electric ducted exhaust ventilation.
Mechanical ventilation equipment that is used in potentially flammable atmospheres must be rated as explosion-proof by Nationally Recognized Testing Labs (NRTL).
Make sure that supplied air is from a clean source and that the hazardous atmosphere is exhausted to safe areas. Keep the ducts as short and straight as possible for more efficient air movement.
The following are examples of exhaust ventilation equipment:
- Electric ducted fans and blowers
- Electric non-ducted fans and blowers
- Air ejector operated by compressed air