North Carolina Administrative Code › Title 15A - Environmental Quality › Chapter 02 - Environmental Management › Subchapter D - AIR POLLUTION CONTROL REQUIREMENTS › Section .1400 - NITROGEN OXIDES › Section 02D .1401 - DEFINITIONS

Current through Register Vol. 39, No. 2, July 15, 2024
(a) For the purpose
				  of this Section, in addition to the definitions in
				  G.S.
				  143-212,
				  G.S.
				  143-213, and
				  15A NCAC
				  02D .0101, the following definitions shall
				  apply. If a term in this Rule is also defined at
				  15A NCAC
				  02D .0101, then the definition in this Rule
				  controls.
(1) "Acid Rain Program" means the
				  federal program for the reduction of acid rain including 40 CFR Parts 72, 75,
				  76, and 77.
(2) "Actual emissions"
				  means for
				  15A NCAC
				  02D .1418, emissions of NOx as measured and
				  calculated pursuant to 40 CFR Part 75, Subpart H.
(3) "Actual heat input" means for
				  15A NCAC
				  02D .1418, heat input as measured and
				  calculated pursuant to 40 CFR Part 75, Subpart H.
(4) "Averaging set of sources" means all the
				  stationary sources included in an emissions averaging plan pursuant to
				  15A NCAC
				  02D .1410.
(5) "Averaging source" means a stationary
				  source that is included in an emissions averaging plan pursuant to
				  15A NCAC
				  02D .1410.
(6) "Boiler" means an enclosed fossil or
				  other fuel-fired combustion device used to produce heat and to transfer heat to
				  recirculating water, steam, or other medium.
(7) "Combined cycle system" means a system
				  consisting of one or more combustion turbines, heat recovery steam generators,
				  and steam turbines configured to improve overall efficiency of electricity
				  generation or steam production.
(8)
				  "Combustion turbine" means an enclosed fossil or other fuel-fired device that
				  is comprised of a compressor, a combustor, and a turbine, and in which the flue
				  gas resulting from the combustion of fuel in the combustor passes through the
				  turbine, rotating the turbine.
(9)
				  "Diesel engine" means a compression ignited two- or four-stroke engine in which
				  liquid fuel injected into the combustion chamber ignites when the air charge
				  has been compressed to a temperature sufficiently high for
				  auto-ignition.
(10) "Dual fuel
				  engine" means a compression ignited stationary internal combustion engine that
				  is burning liquid fuel and gaseous fuel simultaneously.
(11) "EGU" or electric generating unit means
				  a stationary, fossil fuel-fired boiler or combustion turbine that serves a
				  generator with a nameplate capacity greater than 25 MWe producing electricity
				  for sale at any time, except a large non-EGU.
(12) "Emergency generator" means a stationary
				  internal combustion engine used to generate electricity only during:
(A) the loss of primary power at the facility
				  that is beyond the control of the owner or operator of the facility;
				  or
(B) maintenance when maintenance
				  is being performed on the power supply to equipment that is essential in
				  protecting the environment or to such equipment itself.
An emergency generator may be operated periodically to
					 ensure that it will operate.
(13) "Emergency use internal combustion
				  engines" means stationary internal combustion engines used to drive pumps,
				  aerators, and other equipment only during:
(A)
				  the loss of primary power at the facility that is beyond the control of the
				  owner or operator of the facility; or
(B) maintenance when maintenance is being
				  performed on the power supply to equipment that is essential in protecting the
				  environment or to such equipment itself.
An emergency use internal combustion engine may be operated
					 periodically to ensure that it will operate.
(14) "Excess emissions" means an emission
				  rate that exceeds the applicable limitation or standard; for the purposes of
				  this definition, NOx emitted by a source regulated by
				  15A NCAC
				  02D .1418 during the ozone season above its
				  allocation are not considered excess emissions.
(15) "Fossil fuel fired" means:
(A) For sources that began operation before
				  January 1, 1996, where fossil fuel combusted either alone or in combination
				  with any other fuel, comprises more than 50 percent of the annual heat input on
				  a Btu basis during 1995, or, if a source had no heat input in 1995, during the
				  last year of operation of the unit before 1995;
(B) For sources that began operation on or
				  after January 1, 1996 and before January 1, 1997, where fossil fuel combusted
				  either alone or in combination with any other fuel, comprises more than 50
				  percent of the annual heat input on a Btu basis during 1996; or
(C) For sources that began operation on or
				  after January 1, 1997:
(i) Where fossil fuel
				  combusted either alone or in combination with any other fuel, comprises more
				  than 50 percent of the annual heat input on a Btu basis during any year;
				  or
(ii) Where fossil fuel combusted
				  either alone or in combination with any other fuel, is projected to comprise
				  more than 50 percent of the annual heat input on a Btu basis during any year,
				  provided that the unit shall be "fossil fuel-fired" as of the date, during such
				  year, on which the source begins combusting fossil fuel.
(16) "Indirect-fired process
				  heater" means an enclosed device using controlled flame where the device's
				  primary purpose is to transfer heat by indirect heat exchange to a process
				  fluid, a process material that is not a fluid, or a heat transfer material,
				  instead of steam, for use in a process.
(17) "Large non-EGU" or large non-electric
				  generating unit means a stationary fossil fuel fired boiler or combustion
				  turbine with a maximum heat input greater than 250 MMBtu/hr that either:
(A) does not serve at any time a generator
				  producing electricity for sale; or
(B) serves at any time a generator producing
				  electricity for sale and qualifies under
				  40 CFR
				  72.6(b)(4), that addresses
				  certain cogeneration facilities, as an unaffected unit for purposes of the Acid
				  Rain Program.
(18)
				  "Lean-burn internal combustion engine" means a spark ignition internal
				  combustion engine originally designed and manufactured to operate with an
				  exhaust oxygen concentration greater than one percent.
(19) "NOx" means nitrogen oxides.
(20) "NOx SIP Call control period" for the
				  purposes of the NOx SIP Call budgets in
				  15A NCAC
				  02D .1425 means the period May 1 through the
				  end of September 30.
(21) "Ozone
				  season" means the period beginning May 1 and ending September 30.
(22) "Potential emissions" means the quantity
				  of NOx that would be emitted at the maximum capacity of a stationary source to
				  emit NOx under its physical and operational design. Any physical or operational
				  limitation on the capacity of the source to emit NOx shall be treated as a part
				  of its design if the limitation is federally enforceable. Such physical or
				  operational limitations include air pollution control equipment and
				  restrictions on hours of operation or on the type or amount of material
				  combusted, stored, or processed.
(23) "Projected seasonal energy input" means
				  the maximum design heat input per hour times 3300 hours.
(24) "Projected seasonal energy output" means
				  the maximum design energy output per hour times 3300 hours.
(25) "Reasonable assurance" means a
				  demonstration to the Director that a method, procedure, or technique is
				  possible and practical for a source or facility under the expected operating
				  conditions.
(26) "Reasonably
				  Available Control Technology" or "RACT" means the lowest emission limitation
				  for NOx that a particular source can meet by the application of control
				  technology that is reasonably available considering technological and economic
				  feasibility.
(27) "Reasonable
				  effort" means the proper installation of technology designed to meet the
				  requirements of
				  15A NCAC
				  02D .1407,
				  02D .1408, or .1409 and the
				  utilization of this technology according to the manufacturer's recommendations
				  or other similar guidance for not less than six months, in an effort to meet
				  the applicable limitation for a source.
(28) "Rich-burn internal combustion engine"
				  means a spark ignition internal combustion engine originally designed and
				  manufactured to operate with an exhaust oxygen concentration less than or equal
				  to one percent.
(29) "Seasonal
				  energy input" means the total energy input of a combustion source during the
				  period beginning May 1 and ending September 30.
(30) "Seasonal energy output" means the total
				  energy output of a combustion source during the period beginning May 1 and
				  ending September 30.
(31)
				  "Shutdown" means the cessation of operation of a source or its emission control
				  equipment.
(32) "Source" means a
				  stationary boiler, combustion turbine, combined cycle system, reciprocating
				  internal combustion engine, indirect-fired process heater, or a stationary
				  article, machine, process equipment, or other contrivance, or combination
				  thereof, from which NOx emanate or are emitted.
(33) "Startup" means the commencement of
				  operation of any source that has shutdown or ceased operation for a period
				  sufficient to cause temperature, pressure, process, chemical, or pollution
				  control device imbalance that would result in excess emissions.
(34) "Stationary internal combustion engine"
				  means a reciprocating internal combustion engine that is not self-propelled;
				  however, it may be mounted on a vehicle for portability.