scope:

This standard established minimum criteria for the design and operation of a recirculating industrial process exhaust ventilation system used for contaminant control.

Purpose

The purpose of this standard is to establish minimum guidelines to determine:

- If the air from an industrial process can be passed through an air cleaning device and safely recirculated within the building;

- Appropriate methods and equipment are being used to identify the contaminants generated by an industrial process during normal and upset conditions; and

- Possible health and safety problems that shall be addressed if recirculation is to be used.