S.C. Code Regs. § § 61-62.99.B.42

Current through Register Vol. 48, No. 11, November 22, 2024

Section 61-62.99.B.42 - Definitions

(a) "Alternative control technique" means a control technique that may include but not be limited to the following:

(1) an add-on control device that achieves the same reductions as low-NO_x burners or mid-kiln firing, or

(2) an operational control technique such as NO_x emission rates (which may be seasonal limitations and may be facility-wide or unit specific), operational limits, or other means of compliance as approved by the Department and EPA. Any owner or operator of a unit subject to this rule that chooses to comply with this regulation through the use of an operational control technique shall submit a compliance monitoring plan for review and approval by the Department and EPA. Unless otherwise authorized by the Department and EPA, this monitoring plan must demonstrate that the operational control technique achieves at least a thirty percent reduction in NO_x emissions from uncontrolled levels. The owner or operator may request that the Department and EPA approve a rate of NO_x emission reductions less than thirty percent. If the Department and EPA concur that the proposed reduction rate is appropriate, the Department and EPA may authorize a reduction rate lower than thirty percent.

(b) "Clinker" means the product of a Portland cement kiln from which finished cement is manufactured by milling and grinding.

(c) "Long dry kiln" means a kiln which employs no preheating of the feed. The inlet feed to the kiln is dry.

(d) "Long wet kiln" means a kiln which employs no preheating of the feed. The inlet feed to the kiln is a slurry.

(e) "Low-NO_x burners" means combustion equipment designed to reduce flame turbulence, delay fuel/air mixing, and establish fuel-rich zones for initial combustion.

(f) "Malfunction" means any sudden, infrequent, and not reasonably preventable failure of air pollution control equipment, process equipment, or a process to operate in a normal or usual manner. Failures that are caused in part by poor maintenance or careless operation are not malfunctions.

(g) "Mid-kiln firing" means the secondary firing in kilns by injecting solid fuel at an intermediate point in the kiln using a specially designed feed injection mechanism for the purpose of decreasing NO_x emissions through (1) burning part of the fuel at a lower temperature and (2) reducing conditions at the solid waste injection point that may destroy some of the NO_x formed upstream in the kiln burning zone.

(h) "Portland cement" means a hydraulic cement produced by pulverizing clinker consisting essentially of hydraulic calcium silicates, usually containing one or more of the forms of calcium sulfate as an interground addition.

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

(j) "Precalciner kiln" means a kiln where the feed to the kiln system is preheated in cyclone chambers and utilizes a second burner to calcine material in a separate vessel attached to the preheater prior to the final fusion in a kiln which forms clinker.

(k) "Preheater kiln" means a kiln where the feed to the kiln system is preheated in cyclone chambers prior to the final fusion in a kiln which forms clinker.

(l) "Shutdown" means the cessation of operation of a Portland cement kiln for any purpose.

(m) "Startup" means the setting in operation of a Portland cement kiln for any purpose.

S.C. Code Regs. § 61-62.99.B.42

Added by State Register Volume 26, Issue No. 5, Part 1, eff May 24, 2002. Amended by State Register Volume 36, Issue No. 6, eff June 22, 2012 (errata).