Process unit

Process unit means components assembled to produce intermediate or final products from petroleum, unfinished petroleum derivatives, or other intermediates; a process unit can operate independently if supplied with sufficient feed or raw materials and sufficient storage facilities for the product.

Source

40 CFR § 60.590a

Scoping language

(1) The provisions of this subpart apply to affected facilities in petroleum refineries.
(2) A compressor is an affected facility.
(3) The group of all the equipment (defined in § 60.591a) within a process unit is an affected facility.