40 CFR § 63.986 - Nonflare control devices used for equipment leaks only.
(a) Equipment and operating requirements.
(2) Control devices used to comply with the provisions of this subpart shall be operated at all times when emissions are vented to them.
(c) Monitoring requirements. Owners or operators of control devices that are used to comply only with the provisions of a referencing subpart for control of equipment leak emissions shall monitor these control devices to ensure that they are operated and maintained in conformance with their design. The owner or operator shall maintain the records as specified in § 63.998(d)(4).