Indiana Administrative Code › Title 326 - AIR POLLUTION CONTROL DIVISION › Article 10 - NITROGEN OXIDES RULES › Rule 1 - Nitrogen Oxides Control in Clark and Floyd Counties › Section 1-2 - Definitions

Current through July 10, 2024
Authority: IC 13-14-8; IC 13-17-3-4
Affected: IC 13-12
Sec. 2.
The following definitions apply throughout this rule:
(1) "Actual emissions" means a facility's
				actual emissions for the baseline year.
(2) "Affected facility" means any facility
				described in section 1(a)(2) or 1(a)(3) of this rule.
(3) "Affected source" means any source
				described in section 1(a)(1) of this rule.
(4) "Baseline year" means the most recent
				year prior to the effective date of this rule for which available data is
				complete, accurate, and representative of normal operations.
(5) "Clinker" means a product produced in a
				portland cement kiln which is then proportioned with additives and ground into
				a fine powder called portland cement.
(6) "Coal" means all solid fuels classified
				as anthracite, bituminous, sub-bituminous, or lignite by the American Society
				of Testing and Materials (ASTM) Designation D 388-95*.
(7) "Coal fired steam generating unit" means
				a facility that, for the purpose of fuel switching in this rule, derived ninety
				percent (90%) or more of its total heat from combustion of coal in the baseline
				year.
(8) "Distillate oil" means
				fuel oil that contains five-hundredths (0.05) weight percent or less nitrogen
				and complies with the specifications for fuel oil number 1 or 2 as defined by
				ASTM D 396-92*, Standard Specifications for Fuel Oil.
(9) "Dry bottom boiler" means a boiler that
				has a furnace bottom temperature below the ash melting point and from which the
				bottom ash is removed as a solid.
(10) "Facility" is defined at 326 IAC
				1-2-27.
(11) "Federally
				enforceable" is defined at 326 IAC 1-2-28.5.
(12) "Gaseous fuels" means natural
				gas.
(13) "Industrial, commercial,
				institutional steam generating unit" means a device that combusts one (1) or
				more of a combination of coal, oil, and gas and produces steam or hot water
				primarily to supply power, heat, or hot water to any industrial, commercial, or
				institutional operation, including boilers used by electric utilities that are
				not utility boilers.
(14) "Natural
				gas" means a naturally occurring mixture of hydrocarbon and non-hydrocarbon
				gases found in geologic formations beneath the earth's surface, of which the
				principal constituent is methane.
(15) "Nitrogen oxides" or
				"NOx" means all oxides of nitrogen including, but not
				limited to, nitrogen oxide and nitrogen dioxide, but excluding nitrous oxide,
				collectively expressed as nitrogen dioxide.
(16) "Oil" means crude oil or petroleum, or
				liquid fuel derived from crude oil or petroleum, including distillate oil and
				residual oil.
(17) "Oil fired steam
				generating unit" means a facility that, for the purpose of fuel switching in
				this rule, derived ninety percent (90%) or more of its total heat from
				combustion of oil in the baseline year.
(18) "Operating day" means a twenty-four (24)
				hour period between midnight (12 p.m.) and the following midnight during which
				any facility combusts fuel or produces intermediate or final products. It is
				not necessary for the facility to operate continuously for the entire
				twenty-four (24) hour period.
(19)
				"Overfeed stoker" means a boiler design that employs a moving grate assembly
				where the coal is fed into a hopper and then onto a continuous grate that
				conveys the coal into the furnace. As coal moves through the furnace, it passes
				over several air zones for staged burning.
(20) "Owner or operator" means any person who
				owns, leases, controls, operates, or supervises any source subject to this
				rule.
(21) "Portland cement dry
				preheat process kiln" means a reaction vessel that receives dried raw material
				from a preheater and calcines and sinters the dried raw material into a product
				called cement clinker.
(22)
				"Portland cement long dry kiln" means a reactive vessel that dries, calcines,
				and sinters raw materials into a product called portland cement
				clinker.
(23) "Portland cement
				plant" means any facility that manufactures portland cement by either the wet
				or dry process.
(24) "Potential
				emissions" means a facility's potential emissions as defined in 326 IAC 1-2-55
				for the baseline year.
(25)
				"Residual oil" means crude oil and fuel oil that do not comply with the
				specifications under the definition of distillate oil and all fuel oil numbers
				3, 4, and 6 as defined by ASTM D 396-92*, Standard Specifications for Fuel
				Oils.
(26) "Source" is defined at
				326 IAC 1-2-73.
(27) "Spreader
				stoker" means a boiler design where mechanical or pneumatic feeders distribute
				coal uniformly over the surface of a moving grate.
(28) "Tangentially fired boiler" means a
				boiler that has coal and air nozzles mounted in each corner of the furnace
				where the vertical furnace walls meet. Both pulverized coal and air are
				directed from the furnace corners along a line tangential to a circle lying in
				a horizontal plane of the furnace.
(29) "Thirty (30) day rolling average" means
				an emission rate calculated each operating day by averaging all the preceding
				thirty (30) successive operating days average emission rates.
(30) "Utility steam generating unit" means
				any facility that is constructed for the purpose of supplying more than
				one-third (1/3) of its potential electric output capacity and more than
				twenty-five (25) megawatts of electric output to any utility power distribution
				system for sale. Any steam supplied to a steam distribution system for the
				purpose of providing steam to a steam-electric generator that would produce
				electric energy for sale is also considered in determining the electric energy
				output capacity of the affected facility.
(31) "Wall-fired boiler" means a boiler that
				has pulverized coal burners arranged on the wall of the furnace. The burners
				have discrete, individual flames that extend perpendicularly into the furnace
				area.
(32) "Wet bottom" means a
				boiler that has a furnace bottom temperature above the ash melting point and
				from which the bottom ash is removed as a liquid.
*These documents are incorporated by reference. Copies are
				  available for review and copying at the Indiana Department of Environmental
				  Management, Office of Air Quality, Indiana Government Center-North, Tenth
				  Floor, 100 North Senate Avenue, Indianapolis, Indiana 46204.