§ 63.179. Alternative means of emission limitation: Enclosed-vented process units.
80 words·~1 min read·
/us/cfr/t40/s§ 63.179·A research copy — for the controlling text, always check the official state or federal source. Not legal advice.
Process units enclosed in such a manner that all emissions from equipment leaks are vented through a closed-vent system to a control device meeting the requirements of § 63.172 of this subpart are exempt from the requirements of § 63.163, through 63.171, and §§ 63.173 and 63.174 of this subpart. The enclosure shall be maintained under a negative pressure at all times while the process unit is in operation to ensure that all emissions are routed to a control device.