418.3 Ventilation Requirements.418.3.1 Aeration Units. The aeration units shall be ven-

tilated through a nonrecirculating dedicated ventilation exhaust system. 418.3.2 Capture Box. When the drain is not located in the ETO sterilizer equipment room, ventilation is required by a capture box. 418.3.3 Cylinder Change. When not located in the ETO sterilizer equipment room, exhaust during cylinder change is required by installing a hood that is part of a dedicated ventilation exhaust system, positioned no more than 1 foot (305 mm) above or behind the point where the change of cylinders takes place. 418.3.4 Sterilizer Relief Valve. The ventilation of ster- ilizer relief valve is required through a pipe connected to the outlet of the relief valve exhausted directly to the out- doors at a point high enough to be away from passers by, and not near any windows that open, nor near any air- conditioning or ventilation air intakes. 418.3.5 Ventilation of Sterilizer Door Area. The sys- tem shall be designed to capture the ETO when the door is opened following the completion of the sterilization process. A hood or canopy closed on each end should be installed over the sterilization door. A hood or canopy shall be connected to a dedicated exhaust ventilation system.