NR 440.205(2)(j)(j) “Duct burner” means a device that combusts fuel and that is placed in the exhaust duct from another source, such as a stationary gas turbine, internal combustion engine, kiln, etc., to allow the firing of additional fuel to heat the exhaust gases before the exhaust gases enter a heat recovery steam generating unit.
NR 440.205(2)(k)(k) “Emerging technology” means any sulfur dioxide control system that is not defined as a conventional technology under this subsection, and for which the owner or operator of the facility has applied to the administrator and received approval to operate as an emerging technology under sub. (10) (a) 4.
NR 440.205(2)(m)(m) “Fluidized bed combustion technology” means combustion of fuel in a bed or series of beds (including but not limited to bubbling bed units and circulating bed units) of limestone aggregate (or other sorbent materials) in which these materials are forced upward by the flow of combustion air and the gaseous products of combustion.
NR 440.205(2)(n)(n) “Fuel pretreatment” means a process that removes a portion of the sulfur in a fuel before combustion of the fuel in a steam generating unit.
NR 440.205(2)(o)(o) “Full capacity” means operation of the steam generating unit at 90% or more of the maximum steady-state design heat input capacity.
NR 440.205(2)(p)(p) “Heat input” means heat derived from combustion of fuel in a steam generating unit and does not include the heat input from preheated combustion air, recirculated flue gases, or exhaust gases from other sources, such as gas turbines, internal combustion engines, kilns, etc.
NR 440.205(2)(q)(q) “Heat release rate” means the steam generating unit design heat input capacity (in MW or Btu/hour) divided by the furnace volume (in cubic meters or cubic feet); the furnace volume is that volume bounded by the front furnace wall where the burner is located, the furnace side waterwall, and extending to the level just below or in front of the first row of convection pass tubes.
NR 440.205(2)(r)(r) “Heat transfer medium” means any material that is used to transfer heat from one point to another point.
NR 440.205(2)(s)(s) “High heat release rate” means a heat release rate greater than 730,000 J/sec-m3 (70,000 Btu/hour-ft3).
NR 440.205(2)(t)(t) “Lignite” means a type of coal classified as lignite A or lignite B by the American Society for Testing and Materials in ASTM D388-99 (reapproved 2004), Standard Specification for Classification of Coals by Rank, incorporated by reference in s. NR 440.17 (2) (a) 12.
NR 440.205(2)(u)(u) “Low heat release rate” means a heat release rate of 730,000 J/sec-m3 (70,000 Btu/hour-ft3) or less.
NR 440.205(2)(v)(v) “Mass-feed stoker steam generating unit” means a steam generating unit where solid fuel is introduced directly into a retort or is fed directly onto a grate where it is combusted.
NR 440.205(2)(w)(w) “Maximum heat input capacity” means the ability of a steam generating unit to combust a stated maximum amount of fuel on a steady state basis, as determined by the physical design and characteristics of the steam generating unit.
NR 440.205(2)(x)(x) “Municipal-type solid waste” means refuse, more than 50% of which is waste consisting of a mixture of paper, wood, yard wastes, food wastes, plastics, leather, rubber, and other combustible materials, and noncombustible materials such as glass and rock.
NR 440.205(2)(y)(y) “Natural gas” means:
NR 440.205(2)(y)1.1. A naturally occurring mixture of hydrocarbon and nonhydrocarbon gases found in geologic formations beneath the earth’s surface, of which the principal hydrocarbon constituent is methane; or
NR 440.205(2)(y)2.2. Liquid petroleum gas, as defined by the American Society for Testing and Materials in ASTM D1835-03a, Standard Specification for Liquid Petroleum Gases, incorporated by reference in s. NR 440.17 (2) (a) 22.
NR 440.205(2)(z)(z) “Noncontinental area” means the state of Hawaii, the Virgin Islands, Guam, American Samoa, the commonwealth of Puerto Rico, or the Northern Mariana Islands.
NR 440.205(2)(za)(za) “Oil” means crude oil or petroleum or a liquid fuel derived from crude oil or petroleum, including distillate and residual oil.
NR 440.205(2)(zb)(zb) “Petroleum refinery” means industrial plants as classified by the department of commerce under SIC code 29 in the Standard Industrial Classification Manual, incorporated by reference in s. NR 440.17.
NR 440.205(2)(zc)(zc) “Potential sulfur dioxide emission rate” means the theoretical sulfur dioxide emissions (ng/J, lb/million Btu heat input) that would result from combusting fuel in an uncleaned state and without using emission control systems.
NR 440.205(2)(zd)(zd) “Process heater” means a device that is primarily used to heat a material to initiate or promote a chemical reaction in which the material participates as a reactant or catalyst.
NR 440.205(2)(zdm)(zdm) “Pulp and paper mills” means industrial plants which are classified under code 26 of the Standard Industrial Classification Manual, 1987 or under code 322 of the North American Industry Classification System, United States 2002, incorporated by reference in s. NR 440.17 (2) (i) 1. and 3. respectively.
NR 440.205(2)(ze)(ze) “Pulverized coal-fired steam generating unit” means a steam generating unit in which pulverized coal is introduced into an air stream that carries the coal to the combustion chamber of the steam generating unit where it is fired in suspension. This includes both conventional pulverized coal-fired and micropulverized coal-fired steam generating units.
NR 440.205(2)(zf)(zf) “Residual oil” means crude oil, fuel oil numbers 1 and 2 that have a nitrogen content greater than 0.05 weight percent, and all fuel oil numbers 4, 5 and 6, as defined by the American Society for Testing and Materials in ASTM D396-98, Standard Specifications for Fuel Oils, incorporated by reference in s. NR 440.17 (2) (a) 13.
NR 440.205(2)(zg)(zg) “Spreader stoker steam generating unit” means a steam generating unit in which solid fuel is introduced to the combustion zone by a mechanism that throws the fuel onto a grate from above and in which combustion takes place both in suspension and on the grate.
NR 440.205(2)(zh)(zh) “Steam generating unit” means a device that combusts any fuel or byproduct/waste to produce steam or to heat water or any other heat transfer medium. This term includes any municipal-type solid waste incinerator with a heat recovery steam generating unit or any steam generating unit that combusts fuel and is part of a cogeneration system or a combined cycle system. This term does not include process heaters as they are defined in this section.
NR 440.205(2)(zi)(zi) “Steam generating unit operating day” means a 24-hour period between 12:00 midnight and the following midnight during which any fuel is combusted at anytime in the steam generating unit. It is not necessary for fuel to be combusted continuously for the entire 24-hour period.
NR 440.205(2)(zj)(zj) “Very low sulfur oil” means an oil that contains no more than 0.50 weight percent sulfur or that, when combusted without sulfur dioxide emission control, has a sulfur dioxide emission rate equal to or less than 215 ng/J (0.50 lb/million Btu) heat input.