| (17) Heat input--The chemical heat released due to
fuel combustion in a unit, using the higher heating value of the fuel.
This does not include the sensible heat of the incoming combustion
air. In the case of carbon monoxide (CO) boilers, the heat input includes
the enthalpy of all regenerator off-gases and the heat of combustion
of the incoming CO and of the auxiliary fuel. The enthalpy change
of the fluid catalytic cracking unit regenerator off-gases refers
to the total heat content of the gas at the temperature it enters
the CO boiler, referring to the heat content at 60 degrees Fahrenheit,
as being zero.
(18) Heat treat furnace--A furnace that is used in
the manufacturing, casting, or forging of metal to heat the metal
so as to produce specific physical properties in that metal.
(19) High heat release rate--A ratio of boiler design
heat input to firebox volume (as bounded by the front firebox wall
where the burner is located, the firebox side waterwall, and extending
to the level just below or in front of the first row of convection
pass tubes) greater than or equal to 70,000 British thermal units
per hour per cubic foot.
(20) Horsepower rating--The engine manufacturer's maximum
continuous load rating at the lesser of the engine or driven equipment's
maximum published continuous speed.
(21) Incinerator--As follows.
(A) For the purposes of this chapter, the term "incinerator"
includes both of the following:
(i) a control device that combusts or oxidizes gases
or vapors (e.g., thermal oxidizer, catalytic oxidizer, vapor combustor);
and
(ii) an incinerator as defined in §101.1 of this
title (relating to Definitions).
(B) The term "incinerator" does not apply to boilers
or process heaters as defined in this section, or to flares as defined
in §101.1 of this title.
(22) Industrial boiler--Any combustion equipment, not
including utility or auxiliary steam boilers as defined in this section,
fired with liquid, solid, or gaseous fuel, that is used to produce
steam or to heat water.
(23) International Standards Organization (ISO) conditions--ISO
standard conditions of 59 degrees Fahrenheit, 1.0 atmosphere, and
60% relative humidity.
(24) Large utility system--All boilers, auxiliary steam
boilers, and stationary gas turbines that are located in the Dallas-Fort
Worth eight-hour ozone nonattainment area, and were part of one electric
power generating system on January 1, 2000, that had a combined electric
generating capacity equal to or greater than 500 megawatts.
(25) Lean-burn engine--A spark-ignited or compression-ignited,
Otto cycle, diesel cycle, or two-stroke engine that is not capable
of being operated with an exhaust stream oxygen concentration equal
to or less than 0.5% by volume, as originally designed by the manufacturer.
(26) Low annual capacity factor boiler, process heater,
or gas turbine supplemental waste heat recovery unit--An industrial,
commercial, or institutional boiler; process heater; or gas turbine
supplemental waste heat recovery unit with maximum rated capacity:
(A) greater than or equal to 40 million British thermal
units per hour (MMBtu/hr), but less than 100 MMBtu/hr and an annual
heat input less than or equal to 2.8 (1011 )
British thermal units per year (Btu/yr), based on a rolling 12-month
average; or
(B) greater than or equal to 100 MMBtu/hr and an annual
heat input less than or equal to 2.2 (1011 )
Btu/yr, based on a rolling 12-month average.
(27) Low annual capacity factor stationary gas turbine
or stationary internal combustion engine--A stationary gas turbine
or stationary internal combustion engine that is demonstrated to operate
less than 850 hours per year, based on a rolling 12-month average.
(28) Low heat release rate--A ratio of boiler design
heat input to firebox volume less than 70,000 British thermal units
per hour per cubic foot.
(29) Major source--Any stationary source or group of
sources located within a contiguous area and under common control
that emits or has the potential to emit:
(A) at least 50 tons per year (tpy) of nitrogen oxides
(NOX ) and is located in the Beaumont-Port
Arthur ozone nonattainment area;
(B) at least 50 tpy of NOX and
is located in the Dallas-Fort Worth eight-hour ozone nonattainment
area;
(C) at least 25 tpy of NOX and
is located in the Houston-Galveston-Brazoria ozone nonattainment area;
or
(D) the amount specified in the major source definition
contained in the Prevention of Significant Deterioration of Air Quality
regulations promulgated by the United States Environmental Protection
Agency in 40 Code of Federal Regulations §52.21 as amended June
3, 1993 (effective June 3, 1994), and is located in Atascosa, Bastrop,
Bexar, Brazos, Calhoun, Cherokee, Comal, Fannin, Fayette, Freestone,
Goliad, Gregg, Grimes, Harrison, Hays, Henderson, Hood, Hunt, Lamar,
Limestone, Marion, McLennan, Milam, Morris, Nueces, Red River, Robertson,
Rusk, Titus, Travis, Victoria, or Wharton County.
(30) Maximum rated capacity--The maximum design heat
input, expressed in million British thermal units per hour, unless:
(A) the unit is a boiler, utility boiler, or process
heater operated above the maximum design heat input (as averaged over
any one-hour period), in which case the maximum operated hourly rate
must be used as the maximum rated capacity; or
(B) the unit is limited by operating restriction or
permit condition to a lesser heat input, in which case the limiting
condition must be used as the maximum rated capacity; or
(C) the unit is a stationary gas turbine, in which
case the manufacturer's rated heat consumption at the International
Standards Organization (ISO) conditions must be used as the maximum
rated capacity, unless limited by permit condition to a lesser heat
input, in which case the limiting condition must be used as the maximum
rated capacity; or
(D) the unit is a stationary, internal combustion engine,
in which case the manufacturer's rated heat consumption at Diesel
Equipment Manufacturer's Association or ISO conditions must be used
as the maximum rated capacity, unless limited by permit condition
to a lesser heat input, in which case the limiting condition must
be used as the maximum rated capacity.
(31) Megawatt (MW) rating--The continuous MW output
rating or mechanical equivalent by a gas turbine manufacturer at International
Standards Organization conditions, without consideration to the increase
in gas turbine shaft output and/or the decrease in gas turbine fuel
consumption by the addition of energy recovered from exhaust heat.
(32) Nitric acid--Nitric acid that is 30% to 100% in
strength.
(33) Nitric acid production unit--Any source producing
nitric acid by either the pressure or atmospheric pressure process.
(34) Nitrogen oxides (NOX )--The
sum of the nitric oxide and nitrogen dioxide in the flue gas or emission
point, collectively expressed as nitrogen dioxide.
(35) Parts per million by volume (ppmv)--All ppmv emission
specifications specified in this chapter are referenced on a dry basis.
When required to adjust pollutant concentrations to a specified oxygen
(O2) correction basis, the following
equation must be used.
Attached Graphic
(36) Peaking gas turbine or engine--A stationary gas
turbine or engine used intermittently to produce energy on a demand
basis.
(37) Plant-wide emission rate--The ratio of the total
actual nitrogen oxides mass emissions rate discharged into the atmosphere
from affected units at a major source when firing at their maximum
rated capacity to the total maximum rated capacities for those units.
(38) Plant-wide emission specification--The ratio of
the total allowable nitrogen oxides mass emissions rate dischargeable
into the atmosphere from affected units at a major source when firing
at their maximum rated capacity to the total maximum rated capacities
for those units.
(39) Predictive emissions monitoring system (PEMS)--The
total equipment necessary for the continuous determination and recordkeeping
of process gas concentrations and emission rates using process or
control device operating parameter measurements and a conversion equation
or computer program to produce results in units of the applicable
emission limitation.
(40) Process heater--Any combustion equipment fired
with liquid and/or gaseous fuel that is used to transfer heat from
combustion gases to a process fluid, superheated steam, or water for
the purpose of heating the process fluid or causing a chemical reaction.
The term "process heater" does not apply to any unfired waste heat
recovery heater that is used to recover sensible heat from the exhaust
of any combustion equipment, or to boilers as defined in this section.
Cont'd... |
