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 (3.6576 meters) 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 contaminates, 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?