Is the volume and velocity of air in each exhaust system
sufficient to gather the dusts, fumes, mists, vapors or gases to be
controlled, and to convey them to a suitable point of disposal?
Are exhaust inlets, ducts and plenums designed, constructed,
and supported to prevent collapse or failure of any part of the system?
Are clean-out ports or doors provided at intervals not to
exceed 12 feet in all horizontal runs of exhaust ducts?
Where two or more different type of operations are being
controlled through the same exhaust system, will the combination of
substances being controlled, constitute a fire, explosion or chemical reaction
hazard in the duct?
Is adequate makeup air provided to areas where exhaust
systems are operating?
Is the source point for makeup air located so that only
clean, fresh air, which is free of contaminants, will enter the work
environment?
Where two or more ventilation systems are serving a work
area, is their operation such that one will not offset the functions of
the other?