Sec. 220-1.1. Definitions

(a) For the purpose of this Subpart, the general definitions of Part 200 of this Title apply.

(b) For the purpose of this Subpart, the following definitions also apply:

(1) Dry process plant. A portland cement plant where the raw material kiln feed entering the kiln in a powder form has a moisture content of one percent or less by weight.

(2) Feed to the kiln. The weight of all materials, excluding fuels and uncombined water, introduced into the kiln during the time when a stack sample is being taken to determine compliance with sections 220-1.2 and 220-1.3 of this Subpart.

(3) Clinker. The product of a portland cement kiln from which finished cement is manufactured by milling and grinding.

(4) Portland cement kiln. A system, including any solid, gaseous, or liquid fuel combustion equipment, used to calcine and fuse raw materials (including limestone and clay) to produce clinker.

(5) Portland cement plant. Any facility manufacturing portland cement by either the wet or dry process.

(6) Wet process plant. A portland cement plant where the raw material kiln feed enters the kiln in the form of a water slurry of approximately 30 to 40 percent water by weight.